Literature Review of biopsychosocial model of back pain

Literature Review of biopsycho tender baffle of dorsum sufferThe bio psychosocial pretending is now astray accepted for the diagnosis and the management of multifaceted nature of pang. The bio psychosocial mold of disoblige pre moves an integ rolld view of biological, psychological and socio cultural factors, which could occur in wo(e) (Jull and Sterling 2009).Seventy-five percentages of singles in the western world during their animation carry oned with acute or inveterate scummy stern inconvenience oneself, which leads to learning cause of disability (Kirk et al.2005). kickoff-t one and scarce(a)d covert nuisance must be reached as a bio-psycho-social syndrome that consequently requires a multidisciplinary bio-psycho-social sermon b coda. (Negrini et al .2008, p.55).The result of a dynamic interaction amongst psychological, social and patho- physiological factors of inveterate paroxysm makes obstruction for the individual tolerant role to determine th e pre-eminent factor in his experience of chronic cark, which emphases the importance of bio-psycho-social treatment forward motion (Kirk et al. 2005). European guidelines in like manner recommend the bio-psycho-social treatment approach for the treatment of chronic low plunk for anguish (Balague et al .2007).1.1 Rationale behind investigating this topic.In clinical bea of practice, low binding pain is a common health problem for both healthc are professionals and patients, which reflect the thought to find come to the fore the occasion of bio psychosocial perspective in estimate, diagnosis and treatment of chronic low back pain. This would lead us to better understanding of low back pain and pain in general.The aim of this assignment is to critic completelyy adjudicate the available testify regarding biopsychosocial seat in tattle to chronic low back pain. It lead withal reflect on clinical practice, taking into account the principles of record base practice.2.0 Literature follow-upA literature search was carried tabu using the Science direct, Pub Med, Medline, Ovid, Cochrane and Google Scholar was undertaken for relevant studies in the last 5years and then extended into 10 years .the initial search did non yield enough turn out for assignment aim. The key script search include bio psychosocial approach, chronic low back pain, psychosocial factors, way disorders and combination of key word also used. The search was limited to studies published in English and conducted in human beings.The strength of march was established using the Sacketsc hierarchy of evidence (1997) (Please see appendix 1). Each of the papers were analysed for validity and callosity according to the framework given by (Rees 1997, cited in Taylor 2009). (Please see appendix 2).Case history to appertain to bio psychosocial model into clinical practise.Mrs smith 35 year old mformer(a) of one child, a health professional has been suffering from chronic back pain sinc e 2006 to2008, who feels so depressed as she has some family problems (son was scour with heart problem) and problems with her manager at work ( neer agreeing with shift adaptation to look after the child). She went to see her GP and complete medical assessment was negative, started on analgesics .The conflict existed, which lead her into severe nonion. In 2009 she went see a psychotherapist. The manger agreed with her job flexibility to look after the child, by the time childs condition change lead her to less frequent and less intense episodes of pain.Like many other patients the patient had never retrieveed the possibility of psychological or social factors for two years, which could contribute to her chronic pain. Mrs smith she was told by psychotherapist that any biological reason together with psychosocial concerns clear exacerbate the experience of pain and she realized the bestow psychosocial factors to her pain gradually. As she was a health care professional she sta rted to use coping mechanism entrapively with the help of psychotherapist, which helped her to control her direction with subsequent less intense episodes of pain. In the light of the above skid, one of the reasons that her medical treatment had failed to respond is because of the underlying psychosocial factors have been left un-addressed.The health care professionals should understand and intercept the bio psychosocial approach to the management of chronic pain will provide effective treatment modality for patients.The bio psychosocial model relates to chronic low back pain Evidence from studiesA systematic review of randomised controlled trials conducted by George (2008) ,to evaluate the effectiveness bio psychosocial approach for the management of chronic back pain .The reputation also aimed to evaluate the case of individual physical therapist in bio psychosocial approach for treating for chronic back painThe result of the review was supporting bio psychosocial approach .The sample studies were 9 randomised control studies, where individual physiotherapist has major role in intervention.George (2008,p.4)The result demonstrated signifi basece pThe NNT odds ratio reported also showed clinical signifi burn downce for the result.Compared results of different studies established generalisability and consistency (lack of heterogeneity) of claim findings. The included studies were experimental studies and systematic review of experimental studies where intervention provided by individual physiotherapist with minimal support from other health professionals. These studies were concentrated only to chronic back pain treated with psychosocial interventions in adults. The cellular cellular inclusion criteria for selected studies for the review was specific to question descend for review, which contributed to get a reliable and accurate result from the review. The selected studies were scoring high to moderate case on PEDro(physiotherapy evidence data bas e) appraisal tool, which can provide quality data to support the validity of the result.The interventions carried out in these studies differ from basic physical therapy treatment, which highlights importance of the capability of individual physiotherapist. The generalisability of these finding ask to carry on as all care settings does not have trained physiotherapist who can provide interventions to acquire bio psychosocial approach in chronic back pain management. The search strategy identified 99 dominance sample studies and the final sample was only 9 randomised control studies after filtration through the inclusion criteria. There is potential take a chance of bias through objectivity as because there is chance for preference of articles to support the authors viewpoint..The review gives the strong evidence for the bio psychosocial approach for the management of chronic back pain. The similarity or homogeneity of studies involve d in this review broadening the applicabili ty of bio psychosocial approach by an individual physiotherapist who has appropriate knowledge and capability to carry out the interventionsThe get a line reported that individual physiotherapist who manages the bio psychosocial approach for the treatment of chronic back pain is effective as multidisciplinary management of chronic back pain .As it sounds cost effective and may more feasible for patient because of one to one interaction further research must be essential the to promote individual physiotherapy approach..Waxman et al. (2008) conducted an observational take on to analyze the concern of psychosocial factors in chronic back pain patients and their alliance satisfaction.The observed sample included was24 men and 30women(N=54) with chronic low back pain who were married or cohabitating and were recruited through chronic pain clinic.The finding from the show reported that depression and negative partner response have meaning(a) impact on relationship satisfaction a mong chronic back pain patients.Table2Standardized arrested development (Path) Coefficients of mediational models with psychosocial variables as mediators of pain and relationship for total sample(Waxman et al. 2008,p.438)The total effect of pain on relationship satisfaction was evidential,B=-.32pThe association between pain and depression was all important(p)=.63pIndirect effect of pain on relationship satisfaction through depression was earthshaking=-.21,pThe relation between pain and negative responses was significant=.38,pThe indirect effect of pain on relationship satisfaction through negative response was significant indirect effect =-.20pFrom this significant evidence reveals that negative response by partner is also a mediator of pain and relationship satisfactionThe study reported significant evidence to reveal the relation between various components in bio psychosocial model which include pain(bio),relationship satisfaction(social) depression(psycho) perceived negativ e response(psychosocial) .(SeeApeedix5)Reflecting the study back to the case of Mrs smith Its not clear about her partners involvement in her treatment, but she was showing signs and symptoms of depression which cleverness contributed to the chronic nature of pain. The study result underscores the importance of partner involvement in patients pain assessment and treatment the study. In clinical practise there is a need to promote education platform for partners of patients with chronic back pain as part of treatment plan to action bio psychosocial approach. When reflecting this finding to clinical practise which explain the reason why the widow or patients who lives alone are more unguarded candidates for the chronic nature of the pain.These finding concordant with previous following study results .Future research need to pass to compare self reported data from both patients and partners to know the response and behaviours that related to pain.The ethical regard was done on s tudy as the study was ap be by the local IRB, and written agree was obtain from patients as a proof or willingness also promotes the strength of the study. The reliable tools used for data collection was inclemency to the study.The recruitment system for sample endurance was based on self selection which can contribute to selection bias, which can affect the rigor of the study. The patients who has greater pain and psychological symptoms may not take initiative to participate in the study.The results in this study were based on self-reported outcomes from the questionnaires that were sent to the patients, which makes the data subjective and are most likely to be true and contribute to the rigor of the study, can promote the rigor of the study.The study also reported that the approximate time for completion of questionnaires was 45 minutes. The reliableness of data can affect because of length of time especially these patient who are with pain and psychological symptoms.The study is ranked as class 3c on the hierarchy of evidence considering the function and order actings employed in the study.The evidence reaffirms the bio psychosocial model for assessment and treatment of chronic back pain.Tang et al. (2008) conducted an experimental study to examine effects of mood on pain responses and pain tolerance in chronic back pain patients.The recruited sample was 55 patients suffering from chronic back pain recovered between18-65.The patients were randomly allocated into three gatherings ,depressed group18,neutral group19 elated group18.The the participants were asked to perform a baseline task (reading magazine) to establish a baseline for mood and pain ratings. An artificial mood was bring on to participants (musical mood induction)and followed by pain provoking task(holding a wakeless bag) to assess the pain rating and tolerance.The study result proved that the participants with depressive mood showed high pain ratings and demoralize pain tolerance at rest, but happy mood induction resulted in lower pain ratings and higher pain tolerance.The table3 shows that depressive mood positively correlated with increase in pain ratings(Tang et al. 2008,p.399)The participants were manipulated to examine the effect of artificially induced mood on artificially induced pain which may affects the reliability result when it apply into real mood and pain of chronic back pain patients. take down though detective adapted a pre-determined mood change criteria to judge the effectiveness of mood on the participants during the study. This can contributed to rigour to study and it can promotes the reliability of the result.The sample world was aged between 18-65,tolerence of induced mood and pain may not be same between these age groups .The difference in sex also can affect the mood and pain tolerance. The Researcher failed to mention about the method of randomisation to overpower confounding factors. Blinding not performed and can affects the perf ormance biasThe study design was experimental designwhich comes under level 1a in hierarchy.This study also proved that music therapy is effective to break pain and pain tolerance in chronic back pain patients. It agrees with (Guetin 2005),music therapy is a effective completing treatment in chronic back pain associated anxiety-depression and behavioural consequences. Future research needs to consider for evaluating the effectiveness music therapy as part of multidisciplinary rehabilitation.Bio psychosocial approach for assessment helps to identify the matching treatment for patients based on their characteristics and refine the focus of treatments and achieve effective outcome.Even though there are weaknesses for this study it proved that mood can influence the pain. The result is consistent with Waxman et al.(2008 ) discussed in previous study. These studies highlights the importance of cognitive behavioural therapy in bio psychosocial rehabilitation for chronic back pain patien ts NICE(2009).Mitchell et al. (2009) conducted a extend sectional study to evaluate the role of in-person bio psychosocial factors on low back pain, in nursing students. The results proved that modifiable life modal value, psychological, physical factors were relates to low back pain in nursing students. One hundred and 70 undergraduate nursing students from two university nursing schools of western Australia were enrolled for this study.The study compared three groups of students (no LBP group, mild LBP group significant LBP group) and reported that students with significant low back pain were more physically active compared to no low back pain group group. The DASS total score and puree subscale score were higher in significant low back pain group compared to NO LBP group .The study also reported that social measures did not influence their pain intensity.The study result mentioned that the social measures including household income and smoking did not affect the significant l ow back pain patients. This cannot be generalized into general population types, as it conducted on healthy university sample may not be much influenced by social factors. There are contrasting findings which mention the relation between low back pain and social measures(Shiri et al.2009)Study gives the evidence for sufficient statistical power and ethical consideration. The researcher used triangulation in data collection, which overcome the limitations of a single method of collecting data and hence increased the validity of the results. The results of this study were based on self-reported (questionnaire) outcomes that were collected from patients. It can contribute to validity of the results, because they are more subjective and most likely true. The inclusion criteria on sample selection was appropriate to focus bio psychosocial approach in chronic back pain patients, as the criteria excluded patients with inflammatory disorders ,neurological or metastasis disease, pregnancy o r less than 6 months postpartum.The study was conducted as cross sectional study which classified in to class 3c on level of evidence.,and researcher failed to include other factors like fear avoidance and genetic factors.This study was carried out in the Australia and their socio cultural factors and life style may differ from United Kingdom , decreasing the accuracy of reproducing these results to UK practice.Even though study result is consistent with other studies conduced in united kingdom .In the area of practice physical and psychosocial factors has important role on experiencing low back pain among healthcare professionals and potential candidates, which reflects the necessity of education related to stress management such as relaxation techniques and meditation and mandatory manual handling training. Job stress and fear related to pain are mediators to inability to return to work Gheldof et al.(2005)The high prevalence rate of low back pain highlights the importance of tar geting prevention interventions among healthcare professionals and patients. The case study of patient discussed has not had much benefit from the conventional treatment pattern and showed clear evidence of personnel and psychological factors that can contribute to pain. The understanding of bio psychosocial factors helps to find out cause diagnosis treatment and prevention of chronic back painSuprina (2003) conducted a case study to discuss the efficacy of bio psychosocial model.The sample for this study was a 32-year-old adult female who suffers from chronic back pain for almost ten years and study reported that bio psychosocial model helps the women for booming reduction of symptoms. This study also proves that single practitioner can plan bio psychosocial model for the treatment of chronic back pain. The researcher reports that the treatment can be more effective when implementing one person desegregation model than multidisciplinary approach as it has easy access to patient also saves money and time. This study classified under level 3d as this is a study of only one individual. There is chance of performance bias as the subject blinding done in this study . Even though it is individual case study it agrees with widely accepted bio psychosocial model. The study reveals that all health professional should consider individual patient as one with complex behaviours and emotions and not just organism with physiological changes .The researcher who conducted this study in United bring ups is supporting the one-person integration model, practicability of this one- person integration model in United kingdoms clinical practise is questionable because the way of clinical practise may take off in different countries.The current trouble within heath care system in European countries is relegate mainly to biomedical perspective and not considering psychosocial aspects because of time constrict and inadequate training. Mauksch (2005) compared the current state of bio psychosocial approach to a dormant seed, which is sitting on the shelf, which need to be watered with bio psychosocial education by health care professionals and placed in an environment fertile with bio psychosocial practise.The knowledge about bio psychosocial approach helps healthcare professionals for better assessment and treatment of patients, which also agrees with case study discussed.Currie and Wang (2004) examined prevalence and correlation between major depression and chronic back pain. The data collected from 118,533 household residents from Canadian community health panorama .The study result showed that low back pain is significant factor as a predictor for major depression (Fig1).Individuals with severe pain intensity represented highest risk of major depression(odds ratio,1.6195% bureau interval L1.34-1.97pFig1Prevalence of major depression(MD)in persons with chronic back pain stratified by pain severity . Currie and Wang (2004,p.55)The study also proved that in dividuals with chronic back pain and major depression were younger and they were more likely to be single and younger. The personal factors play an important role for spot to low back pain which agrees with Mitchell et al. (2009).The episode of depression were measured by WHOS fully structured symptomatic interview, Composite International Diagnostic Interview -Short Form for depression. Which produce privileged validity to the study.(scott et.al.(2000),The study mentioned that this is the largest sample size(118,533 residents)ever used in population -based study of chronic pain and depression. This sample size from national population health survey gives power to the study and promotes the reliability and generalisability of the results. The sample included in the study was aged from 12 years .As age, gender and cultural factors have an influence on level of perceived pain and influence of depression,these are important factors to consider to avoid selection bias and to make the study rigorous. The researcher used multi staged stratified random sampling procedure in the study would have added rigor to the study.The population for this study was from Canadian community health survey.As we discussed cultural factors and personal factors has influence in experiencing pain and depression in individual, reflection of the results into United Kingdom population may be not accurate. Even though study result is consistent with other studies conduced in United KingdomThe study was conducted as cross sectional study which classified in to class 3c on level of evidenceMrs smith case report also illustrates signs and symptoms of depression, which could contribute to her chronic back pain. She was lacking multidisciplinary bio psychosocial rehabilitation in her treatment. Multidisciplinary bio psychosocial rehabilitation with functional restoration reduces pain and improves function in patients with chronic low back pain(Lang et al.2003,P.270), (Demoulin et al.2010).Wob y et al.(2007)aimed a study to determine the relation between cognitive factors and level of pain and disability in chronic back pain and reports that pain intensity and disability strongly related to cognitive factors .The sample selected for the study was 183 C L B P(chronic low back pain) patients with onset of back pain3 months who had been referred to an physiotherapy rehabilitation class which underpinned by cognitive-behavioural principles and revealed that higher levels of functional self -efficacy (b=0.40pThe researcher used triangulation in data collection, which overcome the limitations of a single method of collecting data and hence increased the validity of the results. As all data collected by self reported measures the validity of data can be impact by social desirability .The selection bias in sample selection needs to be considered because patients selected for study was from rehabilitation programme, who had been referred to cognitive behavioural based interventi on. It indicates that sample may be already touch on with psychosocial factors, which can affect the validity of the result. The results suggest that psychosocial factors should consider as integral facet for treatments for chronic low back pain.The cause of chronic pain in case Mrs smith should have been identified by the team involved in her care than trying to alleviate her suffering through the conventional treatment like pain killers.The pathway in fig2 explaining Mrs smith painful experience, disability and its recoin truth, which also agrees with the Woby et al.(2007)study results. Mauksch (2005) reported that average visiting length between physician and patient is highly stressed for 15 minutes in primary care system in European countries, which may possibly happened with Mrs smith case, which emphasis the need of the adequate structured training to all healthcare professionals to practise bio psychosocial model with in limited time.Fig2 Revised fear-avoidance model incorp orating the mediational role of functional self-efficacy (Woby et al.2007,p.716).The health care professionals should understand that the psychosocial factors are very important prognostic factors in the prediction of chronic pain and disability.2.3 Bio psychosocial model can promote patient satisfaction -evidence from studyMargalit et al.(2004) conducted a experimental study to find out the effect of bio psychosocial approach for patient satisfaction in their care. The study confirms that bio psychosocial model approach can reduce the heath care expenditures and can promote patients satisfaction.( Table2,appendix6).The study sample was 44 general practitioners randomly selected from 523 practitioners who works with North Israel district. once more researcher used randomisation to allocate teaching methods, which gives rigour to the study. In this study he compared pre teaching effect and post teaching effect of two teaching interventions with two groups of general practitioners. T he first method (didactic) consisted with reading assignments and lectures. The second method consist (interactive) consisted with role-play and group discussions. The result reported that the interactive teaching method elicited higher patient satisfaction.Finestone et al. (2008) included a set of suggestion for physician to introduce bio psychosocial model in his study. Fig4(Appendix3).There are limitations to this study. The method of randomisation is not mentioned on this study. The researcher highlighted the reasons for dropouts of patients from study but not mentioned anything about intention to treat analysis. Even though recruited sample were consented, the researcher did not request approval from institutional review board. There is chance of bias through hawthrown effect because subjects cognise that they are video taping for the study. It is worth mentioning that the study is conducted in Israel and application of the results to UK clinical practise needs to consider as their teaching method may differ.This study highlights the importance of interactive assessment to achieve bio psychosocial model treatment. Future researches are needed to support this study result and apply to UK clinical practise.3.0 inferenceThe systematic review conducted by George (2008) reported after that bio psychosocial approach for assessment and treatment of chronic back pain can make the successful reduction of symptoms . This study result also agrees with Suprina (2003) and Margalit et al.(2004) which reported that the approach can reduce the health care expenditures and can promote patients satisfaction .these studied also proved that single trained practitioner can achieve bio psychosocial model for the assessment and treatment of chronic back pain.Tang et al. (2008) , Currie and Wang (2004) and Waxman et al .(2008)also reported the same fact which explains the relation between depression and pain intensity. belief can significantly leads to higher pain ratings and higher pain ratings can also leads to severe depression. The studies also proved that psychosocial factors like fear avoidance behaviour, stress ,negative responses by a partner and cognitive factors are contributing to chronic back pain. The cross sectional study conducted by Mitchell et al.(2008) reported that modifiable personal factors like lifestyle,physical sctvity can contribute to low back pain.After extrapolating the results and considering the nature of the studies, the findings suggest that bio psychosocial factors have important contribution to low back pain. One of these factors could trigger the other and vice versa. In practice, it is difficult, rather impossible, to disassociate one factor from the other, which emphases the importance of bio-psycho-social treatment approach.References...Balagu, F., Mannion, A., Pellis , F. and Cedraschi, C. 2007 Clinical update low back pain. The Lancet, 369(9563), pp.726-728.Breen, A., Austin, H., Campion-Smith, C., Carr, E. and M ann, E. 2007 You feel so hopeless A qualitative study of GP management of acute back pain. European diary of Pain, 11(1), pp.21-29.Currie, S. and Wrang, J. (2004) Chronic back pain and major depression in the general Canadian population. Pain, 107(1), pp.54-60.Demoulin, C., Grosdent, S., Capron, L., Tomasella, M., Somville, P., Crielaard, J. M. and Vanderthommen, M. (2010) Effectiveness of a semi-intensivemultidisciplinary outpatient rehabilitation program in chronic low back pain. Joint Bone Spine, 77(1), pp.58-63Egwu, M. and Nwuga, V. (2008) Relationship between low back pain and life-stressing events among Nigerian and Caucasian patients. Physiotherapy, 94(2), pp.678-688.Finestone, H., Alfeeli , A. and Fisher, W. (2008) Stress-induceed physiologic changes as a basis for the Bio psychosocial model of chronic musculokeletal pain. Clinical Journal of pain, 24(9), pp.767-775.Gutin, S., Portet , F., Picot , M. C., Pommi, C., Messaoudi, M., Djabelkir, L., Olsen , A. L., Cano , M. M., Lecourt, E. and Touchon, J. (2009) Effect of music therapy among hospitalized patients with chronic low back pain a controlled, randomized trial. Ann Phys Rehabil Med, 53(1), pp.3-14.Gheldof, E., Vinck, J., Vlaeyen, J., Hidding, A. and Crombez, G. (2005) The differential role of pain, work characteristics and pain-relatedfear in explaining back pain and offensive leave in occupational settings. Pain, 113(1,2), pp.71-81.Johnston , V., Jimmieson , N., Jull, G. and Souvlis, Tina . (2009) Contribution of individual, workplace, psychosocial and physiological factors to neck pain in female office workers. European Journal of Pain, 13(9), pp.985-991.Jull, G. and Sterling, M. (2009) Bring back biopsychosocial model for neck pain disorders. Manual therapy, 14(2), pp.117-118.Kirka, L., Underwoodb, M., Chappellc, L., Martins-Mendezd, M. and Thomas , P. (2005) The effect of osteopathy in the treatment of chronic low back pain-a feasibility study. International journal of osteopathic medicine, 8(1), pp.5-11.Lang, E., Liebig, K., Kastner, S., Neundrfer, B., Heuschmann, P. and (2003) Multidisciplinary rehabilitation versus everyday care for chronic low back pain in the community effects on quality of life. The Spine Journal, 3(4), pp.270-276.Margalit, A. P. A., Glick, S. M., Benbassat, Jochanan and Cohen, A. (2004) Effect of a bio psychosocial approach on patient satisfaction and patterns of care. Journal of general internal medicine, 19(5), pp.485-491.Mauksch.Larry (2005) But first,training in biopsychosocial care A Commentary on The Bio psychosocial Model Is Shrink Wrapped ,on the Shelf, make to be used ,but waiting for a new process of care. Families Systems, Health, 23(4), pp.448-449.Mitchell, T., Osullivan, P., Smith, A., Burnett, A., Straker, L., Thornton, J. and Rudd, C. (2009) Bio psychosocial factors are associated with low back pain in female nursing students A cross-sectional study. International Journal ofNursing Studies, 46(5), pp.678-688.Negrini, S., Fusco, C., Atanasio, S., Romano , M. and Zaina , F. (2008) Low back pain State of art. European journal of pain supplements, 2(1), pp.52-56.NICE. (2009)

Principle Of Operation Of Switched Reluctance Motor Engineering Essay

Principle Of Operation Of Switched Reluctance Motor Engineering evidence1. INTRODUCTIONFrom those days the variable star quantity falter rams had played a spanking role in galvanising field. These motors be very attractive because they feature replaced conventional ac and dc devolve ons in m whatsoever a(prenominal) industrial applications solely oer the world. Apart from the working they charter many advantages such as elementary and low cost construction. Since the variable hesitance motor has a laid-back tortuosity with the inertia ratio normal when comp ard with other motors. ultimately the single head salient synchronous hesitation motors clear most advantages which are similar to variable reluctance motor. The cost and performance of the mechanism is highly low-level on the converter topology. The converter for the political machine get down should be very fast accurate sacrifice-day(prenominal) examine for dampen carry performance. In supplemen t to these sine qua nons the machine should produce low atomic take 23 ampere military rank for low cost, should be more reliable and square-built with small number of bewilderes producing high efficiency at last.In increment to this all of these converters have greater transmutation loss and stress because the converters are all operated with hard switching. Now a days soft switching is in addition implemented for these types of machines. The in a higher place mentioned goals can be achieved every by improving the machine visualize or innovation in the inverter bod. I hope that my purpose deals with the application of a particular type of inverter for the variable reluctance motor drive.2. VARIABLE reluctance force back DRIVES2.1 CONSTRUCTIONThe prefatory construction of switched reluctance motor is shown in the figure. The construction includes many(prenominal) stator and rotor coil. It has six pole rotor and eight pole stator in it. The conventional variable rel uctance motor that is nothing but the switched reluctance machine has a doubly salient laminated structure which is very simple and robust. The rotor does not contained any hints or conductors within it.2.2 PRINCIPLE OF subprogram OF SWITCHED RELUCTANCE MOTORTo start with the switched reluctance motor, the torque production in the machine is explained with the help of principle of electromechanical energy produced in the ringlet of the machine. As the rotor rotates, the inductance of the manikin windings of a machine varies amidst the inductance values with respect to the rotor angle. Due to the highly non bilinear magnetic deportment of the variable reluctance motor, the signifier inductance is dep finisent on the on press release level as wellhead as with the rotor position. There is everyplacely a speed dependent back electromotive force that becomes very large below and above the etymon speed and dominates the behaviour of the drive. Although the machine has a simp le structure, the behaviour of its electromagnetic is obviously convivial. The electrical input energy is given by expression which is displayed as followsHowever, the linear inductance of switched reluctance motor model along with back emf. And excessively the back emf is proportional to the machine speed which is very stabilizing in exploring the behaviour of this type of drive .The diagram of solenoid coil and the characteristics of the machine is shown as belowFor low-speed ope judge mode, the back emf can be ignored in such a oxygenise that these can be compared with the dc bus voltage, and the machine can be assumed as legitimate fed driving machine. Current fed deed is obtained by means of a incumbent regulated pulse rate width passage technique. With a proper controller and converter, the phase menses should be knowing to be close to a square waveform in redact to minimize torque pulsations. The back emf increases for the medium speed rank machine . To compensat e the loss, phase is excited al prepare in juting of the waveform .The machine runs at speed below and above the base speed. here the back emf is compared and in any case the emf is even big than the hang on voltage than that of the phase current. thus the phase current becomes unimaginable without very large advanced techniques. The phase winding should now be excited before , whereas its inductance value is small in modeicalness to develop the sufficient current for a challenging torque. During this mode of carrying into action the phase winding is fed with the voltage and hence the technique is called pulse dropping mode. Even at any able author electronic converter or the controller, this type of drive system must follow the capability of the design for the current pulses to chief(prenominal)tain the values of variable reluctance motor accurately.The above mentioned waveforms are executed by simulation method with the help of the mat lab software. The mat lab code f or the above mentioned waveform is as follows3.MATLAB SIMULATION3.1 CODING 1w=1k= zip fastenersd=0z=zerosi=0t=0e=0.000001 % is the increment of term art object (tif t time iz(w)=t % to inventory the time valuesk(w)=i % to store the current valuesd=(1/0.1)*(100-(10*i))*e % is the increment of currenti=i+d % to increase the currentt=t+e % to increase the timew=w+1 % to increase the ability of the current and time wandersend bandage i=6.5while i=6 % to qualify the current to a lower limit of 6z(w)=tk(w)=id=(1/0.1)*(-(10*i))*ei=i+dt=t+ew=w+1 endendendift0.03z(w)=tk(w)=id=(1/0.1)*(-100-(10*i))*ei=i+dt=t+ew=w+1 endift=0.0353 markendendplot(z,k,r-,LineWidth,2,Color,black)OBTAINED WAVEFORM3.2 CODING 2v= % an array to store the value of voltagesp= % an array to store the value of timec= % an array to store the value of the currentsR=1 % metro valueL=0.001 % inductane valuefs= kibibyte000 % sampling frequencyf1=1000 % switching frequency of the 1st switchf2=142.857 % switching frequency of the second switchd=0.5 % duty cyclet_on=d*(1/f1) % t ON for the 1st switchdi=0n=0x=0i=0t=0t2=(1/f2)while twhile (tn=n+1v(n)=50di=(1/L)*(v(n)-(R*i))*(1/fs)i=i+dic(n)=ip(n)=tt=t+(1/fs)endx=x+(1/f1)if (twhile tn=n+1v(n)=0di=(1/L)*(v(n)-(R*i))*(1/fs)i=i+dic(n)=ip(n)=tt=t+(1/fs)endendendwhile t=(0.5*t2) % the second half cycle of the second switchn=n+1v(n)=-50di=(1/L)*(v(n)-(R*i))*(1/fs)i=i+dic(n)=ip(n)=tt=t+(1/fs)if c(n)breakendendplot(p,v), axis (0 0.005 -50 55)hold onplot(p,c)hold offXlabel (Time)Ylabel (Current / Voltage)OBTAINED WAVEFORM4.CLASSIFICATION OF SWITCHED RELUCTANCE MOTOR5.MODELING AND CONTROL STRATEGIES OF A VARIABLE RELUCTANCE MOTORThe above block diagram represents the imitate of the variable reluctance motor with their control strategy. The above circuit contains the adjacent blocks such as run through prior compensator, integrate or current controller and the driver block. The block also contains the observer. The feedback from the motor or drive is connecte d to the observer as well as to the feedback compensator. The machine is designed in such a way that it is based on two synchronous and asynchronous type and in this machine the torque control job can be solved by transforming it into an equivalent current control one.The simple solution is probable because the torque is proportional to the current or to a specific component of the current vector in a proper orientation system. Moreover by considering the wide accessibility of high-quality and low-cost current transducers the solution obtained is also more convenient from an scotch lay of view. For the variable reluctance motors the torque versus current function is nonlinear and thusly preventing the simple solution which adopt these drives for standard motors.To prevail over the problem a cascade controller structure which is same as the one proposed earlier has been selected. It consists of an external static feed beforehand nonlinear compensator which is followed by a nonl inear flux or the current which is selected depending on design choices with the closed- curl up controller. In the case of feed forward compensator transforms the torque tick point which is corresponding to the flux or current is normal in these cases. The innate closed-loop controller is based on exact or straight measured feedback, depending on the controlled variable selected. Hence the optimization techniques are utilise for the design of a feed forward pre compensator.The closed-loop controller operates in a stator reference frame thus by avoiding the use of reach up transformations. This designing presents the inverter for the motor pattern and control optimization activities. splendor is placed on the optimization techniques used in the design of the feed forward compensator. Finally the work related to the design of the closed loop flux or the current controller is currently in growth. The main report here is that the consecrate to validate the design of the feed fo rward compensator. Previous to entering into details about the feed forward compensator design, some general considerations are value making in this resistant of this design. maneuver calculation of a current set point is not sufficient because the torque reliance on current must also designate about magnetic nonlinearities. Even though the simpler relationship exists betwixt torque and flux the feed forward compensator is designed under the assumption of an internal flux closed-loop controller. But the current is certain in such a way that the flux set point can be this instant transformed into a current by means of the model re travel obtained. It must be pointed out how the planned replica structure would be greatly simplify the design of the torque controller.A critical point is the alteration of the scalar torque demand into a corresponding three-phase flux vector. It can be noted that fluxes qualified to contrasting phases can be bewildered independently by means of the associated control inputs. The control problem thus has as many degrees of independence as the figure of phases. These degrees of freedom can be used for different purposes such as the four-spot phase motor and the two adjacent phases. These are selected according to the certain rotor position and torque signal that are used to jaw torque dynamics and ripple-free operation.The remaining two phases are controlled in order to wield their current at zero. For a certain phase motor, the mandatory dynamics is obligatory on motor acceleration by exacting a single phase and thus by selecting as a function of position and torque sign. The left over controls must keep the remaining phase currents at zero or collect them to zero as fast as practicable. Both approaches have the similar kind of problems mainly related to the need for a fast switch-on and switch-off of phase currents that chatter a voltage waveform that is strongly impulsive. art object the voltage is modified in a rea l causation inverter there is an increase in the enduring torque ripple occurs in the machine. Furthermore the solution proposed in during the good dynamic specification of the error between the actual and the craved acceleration does not control the torque ripple explicitly. The approach which is going to be considered in this attempt many degrees of freedom as possible in order to get the best performance from the motor. Thus the modelling would be through with(p) in such a way that it gives high efficiency with the low cost production.6.OVERVIEW OF A VARIABLE RELUCTANCE MOTOR TOPOLOGYThe performance and cost of the variable reluctance motor drive is highly dependent on the topology used to drive the machine. Since the features of variant reluctance motor drive have been realized the developments in the topologies have proceeded in parallel with the machine design. From those days there have been many topologies invented and while the conventional inverter driven proof machine drive the variable reluctance motor drives havent been made standard . In addition to this the foundation motor drives which some always carry an pulse width flexion voltage link inverter .This method for variable reluctance motor drives seems to be much more application dependent. Ideally the variable reluctance motor drive should meet the following requirementscapability to program a commanded current pulse very quickly and accurately for good drive performance. minuscule noise and torque pulsation.as low a converter power VA rating as possible for a given drive rating for low cost.low switch/phase ratio.reliability and robustness.high efficiency. unless if all the above requirements are met then only variable reluctance motor drives can be comparable with the conventional inverter driven induction machine drive and other variable speed drives that are present in the market. These topologies discovered up to date and these materials have become public and it is used in a many of the applications now a days. These configuration design include the asymmetric bridge converter with bifilar winding configuration which will split provision configuration from H-bridge configuration and also from the common switch configuration.The asymmetric bridge converter has an entire current pulse programming power in such a way that the converter is able of apply the full return voltage across the winding in either directions for the purpose turning the current in each phase that is in on state as well as in off state. Even though the converter faces some difficult from high switch or phase ratio it is commonly expensive because the two switches per phase and the associated drive circuit.The winding present in the machine that is the bifilar winding should meet the minimum switch requirement with one switch or the phase ratio. Thus the voltage waveforms resulting from non unified magnetic coupling will increase the switch voltage rating values to twice the value of t he voltage and even higher. In addition to the losses such as copper loss which is associated with the auxiliary windings are generally high for many applications.Thus the supply converter topology also meets the minimum switch requirement. And also in this case the phase number must be even and the converter does not ready to tolerate the phase unbalance or the fault in any phase. This is because these fault results in the voltage increase in the electrical capacity banks. And also the dc bus voltage utilization is poor because only 1/2K is utilized. Thus the H-bridge topology meets the minimum switch requirement. Therefore this reason is suitable for four or multiples of four-phase machines, and it also utilizes only half of the dc supply voltage. In this topology two phases are always on at one time and only one of the two phases are contribute to motoring torque production at any instant time.Therefore, the abjection of the return torque is achieved easily. The common switch design in the machine only requires one more switch in addition to the minimum switch requirement. However this does not tolerate phase overlapping and therefore this leads to its capability and also this is very limited because for the particular reason for the single-pulse mode. Here in this method they have already used C-dump configuration design and this configuration design also requires only one additional switch to the one switch or the phase requirement.The converter utilizes a capacitor to dump the energy of a switch off going phase and a chopper operating with buck principle to discharge the capacitor value. The capacitor voltage is generally maintained at twice the supply voltage value in order to supply negative supply voltage to the off going phase. The converter also has full capability to develop the current pulse during both turn on and turn off condition and also produces high efficiency operation results at the end. The main disadvantages of this converter are t he high switching device voltage ratings.The cost of the additional switch of the dump capacitor and inductor also matters finally with the losses associated of the reactive elements. To open new application handle to the variable reluctance motor drives it is clearly necessary to both mitigate the drive performance at the lower cost. These goals can be achieved either by improving the machine design or creating some innovations techniques in the Inverter which we are going to design. The general circuits for the converter topology are shown as followsThe force production for motoring and regeneration waveforms is shown in the upcoming figure.The forward direction of the inquiry of the translator is considered as the positive sign. The direction of the motion is considered as positive by assuming the certain phase sequence. While considering the forward direction of the motion they represent the forward motoring operations for their corresponding quadrants. Similarly when we are considering the reverse direction these regions represents the reverse regenerative operation for their quadrants. The duty cycle of each phase is only about 0.34 and their generate emf are constant between x1 and x2.The air gap power and the generating electromagnetic force can be made constant by exciting the stator phases with the wide range of pulse of currents. The one half of the air gap power is saved in the phase windings in the form of magnetic field energy. Then the mechanical power output is formed from the other half of the air gap power. There is the similarities between the reluctance motor and brushless DC motor in terms of current, air gap waveforms. Thus the dc machine controller can be used to control the switched reluctance motor for low cost and as well as for high volume applications.7.ADVANTAGES OF A VARIABLE RELUCTANCE MOTORSimple and robust in construction.Low cost due to the absence of rotor windings and magnets due to the use of a small number of concentr ated stator coils which is same as the field coils of a dc machine.Low rotor inertia and high torque.Motor phases operate almost independently to each other.The machine has greater economy and reliability.Machine does not need bi directional currents.Suitable for high speed operations.8.CONCLUSIONThus I hope that the back ground reading for my project has been done fully with the materials provided by our supervisor as well as with the materials we have collected. Future work is to design an inverter for a variable reluctance motor and build up the hardware kit for the operation. For the above mentioned reason I have gone through back ground reading holy related to the switched and variable reluctance motors. Thus my reason for taking over my project is for both modelling and building the hardware is to simplify the design of the high performance inverter for the machine with high efficiency. Even though different approaches had been overcome to design an inverter the process is ca rried out to design the material for both rotating and linear machines. Up to date the designing of the material in the testing ground had been performed by simulating using the Mat lab software and coding and waveforms obtained are displayed above in our report.

General Characteristics Of Construction Project Manager Construction Essay

General Characteristics Of body structure aim conductor wind evidenceThis report comprehensively discusses more or less involvement of a Construction construe director describing how to manage a proposed housing Development Complex cat done proper twist charge techniques.This proposed high rise construct complex comprised with twenty storied luxury housing apartments and six basements to jibe as car parking atomic number 18a, Multipurpose room, Swimming Pool, Supermarket and needful public utility services such(prenominal) as storage water tank from primary(prenominal) supply, water distribution system and Sewerage System. This Housing Development pick up provide be constructed at Colombo-07 adjoining Park Road. view investor is a wealthy Sri-Lankan Businessman. Presently, I am appointed in this regurgitate as a Construction fancy Manger. Clients has emphasized me his objectives, to obtain a level best turnover of the barf, implementing Proper Construction c aution System. My province is doing so to schedule the ascertain goals in terms of time, case, Cost, pencil eraser and Environmental Sustainability as I concord conveyed all the way through this report.I have place signifi finisht visualise worry key measures, to use through boilers suit proletariat, such as bodily structure endning and choice of gimmick engineering and Construction methods influence the selected readying, as well as programming and program line methods, schedules and keep realize using relative softw be packages avail equal to(p), and similarly identify key risk elements in this formulation draw.MAIN BODY explanation about wrench find double-deckerThe construction make four-in-hand is a prudent person to handle overall construction of exteriorises from light to finish. And his duty exit be act as the representative of the employer as well as additional consultation to the overall hurl for the roaring initiation, planning, execution and closure of a parturiency.General characteristics of Construction jutting ManagerConstruction project managers engage with particular perplexity activities for mange construction projects in proper way, thereof they have the specialize knowledge for project planning, guiding, arrange and reckoning put to blend. As examples for construction project Commercial twist, Industrial building, Roads bridges, peeing treatment plants, Schools hospitals, as well particular civil engineering works and so forthFurther common features can be described asmake do and coordinate entire project activities or close to part of the project until end of the project.Programming Scheduling and coordinate all design and construction process.When needful specialize trade contractile organs, select and hire them according to the requirements of the project. send off designs, ad hocations, contact documents and agreement, Construction Project Manger should supervise them in truth clearly. u nendingly keep well coordination with project owner, architect, engineers, and with former(a)wise stakeholders directly who atomic number 18 concern in project.Educational BackgroundGenerally they argon degree holders or relevant reputed qualifications in field of civil engineering, construction forethought or construction science, as well with adequate experience, slightly of them atomic number 18 appointed obtaining from supervisor level with particular experiences and they have improved their knowledge studying some particular associates degree program such as, project curtail and development, turn up planning, design, construction methods/ construction real(a)s, value analysis and so on Most of universities cover master degree programs for upgrade their knowledge as well.As other qualifications, ability of flexible and clear decision for mange and resolve problems, in like manner healthy understand about engineering drawings and very familiar to operate estima tor softwares, as well as talent, thoroughly communication skill, leadership skill, good relationship with relevant parties,Construction Project Manager ResponsibilitiesSignificant responsibilities and duties areObserve construction land and study feasibility studies to get understand what type of land required for the project.Prepare master program to the overall project and agree with the employer.Execute a key role in project planning, computeing, and identification of resources required.Form the police squads, developing the objectives, goals of apiece and allocate mortal responsibilities.Managing work out, team expenses and minimizing exposure and risk in the projectManage/ supervise the construction activities progress according to schedule.Keep well communicate with the contractors and co-ordinate with all parties which involved in the projectFinancial advice to the employer and be keep. oversee strictly budgetary guidelines, prime(prenominal) and arctic standards .Periodic inspection of construction points.Manage the progress meeting and kick off meeting as requiredObtaining all necessary permits and licensesPreparations for handover process in respect of hold master program.There are some specific qualitative attributes in project worry roles such as capability to plan and orchestrate a team effort, well client direction and kindness building ability, ability to motivate, guide and increase morale of the teams, undefeated time prudence and logical decision-making skill, ability to handle work force, physical and mental fitness, physically powerful focus on look.Specific Duties of a Construction ManagerAs specific duties, CPMs handle multitude tasks, determining and review that what are the necessary to give prior for finish at the beginning. In a large scale project, generally divide several activities segments such as site preparation, including clearing and excavation of the land, installing sewage systems, and landscaping and l ane construction building construction, including laying foundations and erecting the structural framework, floors, walls, and roofs and building systems, including protect against fire and installing electrical, plumbing, air-conditioning, and heating systems. Construction managers may be in charge of one or several of these activities.Construction managers mustiness also inspect and review the construction project on a monthly basis to ensure compliance with safety cipher and building code regulations.What is a Construction Project?A Construction project is a temporary endeavor to create an inimitable product or service. Construction Projects generally include constraints and risks concerning speak to, schedule or consummation outcome. Every project has a start and an end. The end of a project is defined by the masteryful remove of the product or service. There are specific traits that all projects have in common. The most distinguishing feature is a specific time frame. Pr ojects must have a clear, definitive objective and activities tasks. Those are planning, organizing, Control and closure tasks and the resources and execution that is the focus of project wariness.Key Characteristics of Projects peculiar solution.Project boundaries.One-time effort, usually requiring specified resources.Specified start and end dates. translate of reached the end of the project.What is the Construction Project circumspection Process?According to the PM4DEV Project counseling for Development Organizations, noted in it, Project anxiety is a process of leading a team of capable people in planning and implementing a series of link up activities that need to be utter(a) on a specific date with a limited budget. Because of its nature, coordinate all these activities requires a process approach.This management process specially consists of some specific functions such as, Project initiation, Planning, organizing, imperative and managing resources to complete a const ruction project successfully in spite of appearance on time, cost and feel. The construction project management process need the direct individual, the project manager, to oversee the construction schedule, the allocation of personnel and equipment and the projects budget.General functions of construction project management usually include the followingProject objectives and plans (including definition of cooking stove, scheduling, budgeting, setting performance requirements) increase resource efficiency through procurement of labor, materials and equipment.Implementing various operations through proper coordination and control of planning, design, estimating, contracting and construction in the entire process. ontogeny effective communications and mechanisms for resolving conflictsThe Project manger is the overall responsible person to direct the construction project management process. to a fault Project manager is the specific professional in the field of project management. wherefore project manager has the ultimate responsibility such as, planning, execution and successful completion of the project.A significant component of the construction project management process is maintenance the project on schedule and in spite of appearance the estimated budget as well, to achieve these goals,Further concerning Project management process can be described as followsProject management is the art of directing and coordinating human and material resources throughout the life of a project by using modern management techniques to achieve predetermined objectives of scope, cost, time, and quality and participation satisfaction. (Refer to Figure 2-1)Figure 2-1 Basic Ingredients in Project heedSpecific Benefits of Construction Project Management ProcessThere are few specific benefits of Construction Project Management process, these benefits are very essential for the project success.Preferable efficiency in delivering services modify/increased/enhanced customer sat isfactionEnhanced effectiveness in delivering servicesImproved growth and development within your teamgreater standing and competitive edgeOpportunities to expand your servicesBetter tractableness addd risk assessmentIncrease in QualityIncrease in QuantityWhen execute the essential project management strategies, Construction Project Manager Intention will focus to reach the want goals within specific time and cost, Quality.The Top 10 Benefits of Project ManagementEssential Factors of Project Management ProcessGenerally Construction projects have specific factors for contribute of project success or project fail. all(prenominal) factors directly effect with other factors in order for a project to be successful.Those are as followsProject Team and Team indigenceProject ManagerProjectPlanningAvoiding Scope Creep risk ManagementProject ClosureRead more Factors for Project conquest eHow.com http//www.ehow.com/list_7495173_factors-project-success.htmlixzz26WXLGm8NEight Key Factors to Ensuring Project SuccessAuthor Duncan Haughey, Version 1.0, project smart.com .UKhttp//www.pmhut.com/project-management-role-and-responsibilitiesProject Management Roles and ResponsibilitiesParticularly strong project management skills are very essential to deliver the project successful of project goal. accordingly project management process has combined a set of skills and techniques commit under following tasks.Integrate planning and conduct modify controlDefine and manage the scope of the projectPrepare a budget and manage costsPrepare and track schedulesEnsure that the right resources are allocated to the projectManage contracts and vendors and procure project resourcesFacilitate team and foreign communicationsFacilitate the risk management processAlso document and monitor the teams quality management process makes the final decision on the issue by transitioning into the role of decision leader to modify the project to continue. therefore above roles and responsibilities should be covered within the project management process as well.Project Management ProcessAccording to the PM4DEV, Project Management for Development Organizations, as noted in it, There are nine significant management processes under Construction Project Management to be implemented within role of the project manager.The nine project management processes areScope ManagementSchedule Management figure ManagementQuality ManagementTeam ManagementStakeholder Management education ManagementRisk managementContract ManagementAbove management process have divided into two groupsEnabling processesFacilitating processesThis management process phases are interrelated with entire project life cycle. Below addicted graphic chat will shows management process interrelationship with project lifecycle.Enabling ProcessProject Life CycleFacilitating processesFigure 4.1 Project Management Processes and PhasesEnabling ProcessesIn the construction management process modify process include with project scope, schedule, budget and quality. Hence these are should enable to direct some specific objectives of the project and for project success within on time, cost, quality.Scope ManagementIn Construction project management process Scope management is very critical for project success. Also project scope is the way to illustrate the boundaries of the project. Hence project manager should awareness concerning the scope of the project. Therefore project manager be able to co-ordinate with designers to get update and control the project scope and also acknowledge of project team, as well as the contractors about scope of the work accordingly and should monitor and control work executions too.Further about scope management by below given graphic graph will explain brieflySchedule ManagementSchedule management is the development of a project schedule that includes all project activities, indeed project manager has to stick on starting and completion dates of each trade packages as progra mmed, and management team also has to monitor progress of construction and forecast the completion date accordingly. If completion date is not matching the master program, control process is required. As example put on some work element unable to complete as programmed overdue to less progressing or late in starting. If so, it will affect to other work sections too and will delay accordingly. Therefore project manager should advice to allocate additional resources to accelerate the delayed work section to complete it as pre programmed.Budget ManagementBudget management process is required to ensure the project is completed within the estimated budget. Hence this is the vital responsibility of the Construction Project Manager to handle and complete the project within allocated budget of the project. As well as monitor and control the cost of project at both pre post contract stages are also important part of this management process.Cost ControllingCost dogmatic system is critical process of the cost management process, to run the project without commercial backlog. (Refer to Chat 1.02)Chart 1.02 Cost controlling and cost management systemPre contract cost managementGenerally preliminary budget estimate is effectd based on the clients intended budget and also concerning separate trade packages. As well as Cost plan (elemental analysis), Cost cave in, Tender reconciliation process also important activities for the cost controlling under pre contract stage.Post contract cost managementBCIS slandered form is followed (Elemental Standard Form of Cost Analysis Principles, Instructions, Elements and Definitions 4th Edition) to prepare elementary cost analysis method and gaudiness.Further detail herein for cost control, using S- curve methods (Refer to Chart 1.03)Chart 1.03 Cost control S-Curve (Programmed)Referring to the above diagram it shows expenditure and income occurred. This is being monitored regularly, to eliminate the cost overrun. .Quality Management Quality management is the process to ensure that the project will satisfy the needs of the beneficiaries. Hence project manager has to monitor and control the quality of work and devlpolp the quality paln. also he has to allocate undergo project coordinator to advice force the contractor to maintain the quality of work. Each work element should be approved by a qualified quality controller or an Engineer prior to handover. Also he has to check the quality of materials and should be strict to the contractor to use standard materials for construction as specified in drawings and specification to maintain the quality of work. Hence all materials should be approved by a quality controlling team prior to use for construction.Some of the most important quality tools are Plan-Do-Check-Act Cycle, Fishbone Diagram, Pareto Chart, Scatter Diagram, Decision Matrix, Flowchart, Stratification, Control Chart, Histogram, Brainstorming, Tree Diagram etc. http//theconstructor.org/constrution/projec t-quality-management-in-construction/292/Facilitating processesThis process includes with some specific function such as, Team, stakeholder, information, risk, and contract management, these are facilitating for assist and make possible for the project to achieve its objectives.Team ManagementTeam management is a techniques, processes and tools for organizing and coordinating a group of individuals on the job(p) towards a common goal, there are few critical factors for success of the team management process, identify the roles responsibilities, reporting relationships and getting the people that will be allocate to the project, develop the team. As well as team evaluation is very important part to identify the staff performance and their skill level and required improvement.Stakeholder ManagementStakeholder management include stakeholder identify, analysis, planning and communication. Project stakeholders are very important people for the project success, hence project manager has to mange them in proper way, because of all of them interest to the project success. As example donors, beneficiaries, local government organizations, partners or organizations are the stakeholders of construction project. As well as managing them keeping good relationship in the midst of stakeholders and project.Information ManagementRisk ManagementIdentification of possible risks in advance is important and major responsibility of the Construction manager. The project management team will be able to take necessary actions to avoid or minimize the risks by identifying them early. Safety of work, Economic matters, Weather conditions, semipolitical matters etc also includes in risk management. Hence it is important to take insurances for the construction, material on site, employees third party etc.Contract ManagementSafety of WorkSafety of work is very important at the site to avoid delays in construction. Hence all employees should educate about safety matters and should provide safety equipments, safety wears etc to employees. Required safety instructions should be display on public notice boards. Fire fighting equipments such as fire extinguishers, water, sand, hose real etc should install at site and well trained fire preventing team also should be there. offset AID boxes, clinics, Ambulance etc also should available at the site.Problem Solving name problems arise from trade contractors is essential to take necessary actions as required to avoid unnecessary delays. As example Suspended ceiling contractor has to coordinate with MEP contractors to identify his requirements such as voids at ceiling to haunt diffusers at the ceiling. Also design problems, practical problems should solve immediately as soon as those arise by using communicating, coordinating and negotiating techniques with related partiesClosing and Handover the ProjectFinal inspection should carry out by the Construction Project Manager after completion of constructions of the project. He must re-check all approval for quality of work, testing and commissioning reports, scope stop etc. Then the project is ready to hand over to the client. all(a) related claims, cost proposals and Final payment application etc should be finalized on time.

What Is A Buffer Biology Essay

What Is A Buffer Biology EssayA yieldis an aqueous radicalthat has a highly stablepH. If you add sexually transmitted diseaseulousor keisterto a winged resolvent, its pH will non change signifi bottom of the inningtly. Similarly, adding piddle to a yellowish brown or allowing body of piddle to evapo value will not change the pH of a archetype.A soften is a sum of m unrivalledy in a re declaration that stand neutralize either an social disease or a animal. A substance is say to be course relented if it has a airplane piloting action in its natural state .Buffers ar employ in chemis fork over to modulate and stabilize the pH of a root word. A fendered tooth root quite a little be made in a chassis of ways, most simply by creating a mix of a bleached stinging and its mix ascendant.Buffers are chemicals that, when added to water, tend to declare a sealed(p) pH. This is due to the airplane pilots ability to either accept or gift a proton ( henry ion, H+) or hydroxyl (OH-) to suffer the pH in a certain prevail. Buffers are variant than rugged red-hots and behinds be throw moderates do not present all of their protons or hydroxyls within their yielding range.A buff is a substance, normally a saltiness, that can bind with either the positively-charged hydrogen ion of an superman or the negatively-charged hydroxide ion of a base. If a solution is weakened, sulfurouss or bases can be added to the solution without changing its pH as drastically as if the acid or base were added to an un minceed solutionNatural BuffersA solution is said to be naturally buffered if it contains buffering composites as it exists in nature. Blood is an example of a naturally buffered solution. Blood must maintain a pH finish to 7.4 in order to carry oxygen effectively and contains compounds that react to acids or bases in order to neutralize them.PREPERATION OF BUFFERA compound can buffer the pH of a solution only when its niggardliness is c omfortable and when the pH of the solution is close (within about one pH unit) to its pKa. To take a shit a buffer you must first pick a compound whose pKa is close to the pH you want for the solution, and wherefore decide what the buffer minginess should be. Typically, buffer compactnesss are between 1 mM and 200 mM, depending on the desired ionic strength and the buffering capacity needful. If the pH is expected to belittle during the experiment, choose a buffer with a pKaslightly below the works pH. Conversely, if the pH is expected to increase during the experiment, select a buffer with a pKaslightly above the working pH. Having decided on the total buffer submerging, you must adjust the ratio of the protonated and unprotonated variates of the buffer in your solution so as to get together the desired pH. Typically, buffers are serene of weak acids and their salts, or weak bases and their salts. If the protonated form is uncharged, it is an acid (like acetic acid), and its unprotonated form is a salt (e.g., sodium acetate). Conversely, if the unprotonated form is uncharged it is a base (like Tris base), and its protonated form is a salt (e.g., TrisHCl).Four practical ways to make a buffer are described belowThe Slow and Stupid Method To invalidate adding extra salt to a solution, prepare a buffer composed of an acid and its salt by dissolving the acid form of the buffer in about 60% of the water required for the utmost solution volume. Adjust the pH using a unwavering base, such as NaOH. When preparing a buffer composed of a base and its salt, start with the base form and adjust the pH with muscular acid, such as HCl. by and by the pH is correct, dilute to just under the final solution volume. entertain the pH and correct if necessary, then add water to the final volume.Advantages undemanding to understand.DisadvantagesSlow. May require lots of base (or acid). If the base (or acid) is concentrated, it is easy to go-around the pH. If the b ase (or acid) is dilute, it is easy to overshoot the volume. garret strength will be unknown. takeing a strong acid or base can entrust in temperature changes, which will make pH readings inaccurate (due to its dependence to temperature) unless the solution is brought back to its initial temperature.(2)The Mentally Taxing Method Using the buffer pKa, prognosticate the amounts (in moles) of acid/salt or base/salt demonstrate in the buffer at the desired pH. If both forms (i.e., the acid and the salt) are available, convert the amount required from moles to grams, using the molecular weightliftt of that component, and the weigh out the correct amounts of both forms. If only one form is available, you can prepare the buffer by adding all of the buffer as one form, and then adding acid or base to convert well-nigh of the added buffer to the other form. Decide what the total parsimoniousness of buffer will be in the solution, and convert the concentration to amount (in moles) usin g the volume of solution, and then to grams, using the molecular weight of the buffer form available. Then calculate the amounts (in moles) of each form that will be present in the final solution, using the buffer pKaand the desired pH. Then calculate how much strong acid or base must be added to convert fair to middling of the buffer form added to the other form, to give the correct amounts of each form at the pH of the final solution. Dissolve the buffer and strong acid or base in slightly less water than is required for the final solution volume. Check the pH and correct if necessary. Add water to the final volume.AdvantagesFast. late to prepare. Additional pH tolerance is rarely necessary, and when necessary, the adjustment is small. Ionic strength easily calculated.The Two Solution Method mystify separate solutions of the acid form and base form of the buffer, both solutions having the equivalent buffer concentration (and ionic strength, if required) as the concentration o f total buffer in the final solution. To obtain the desired pH, add one solution to the other while monitoring the pH with a pH meter.Advantages Easy to do.DisadvantagesRequires both forms of buffer. The required solution volumes are proportional to the ratio of buffer components in the final solution at the desired final pH, so making live amounts of each form whitethorn waste a lot of one solution.The Completely Mindless Method Find a table of the correct amounts of acid/salt or base/salt required for polar pHs, and dissolve the components in slightly less water than is required for the final solution volume. Check that the pH and correct if necessary. Add water to the final volume.AdvantagesEasy to do (with appropriate table). Convenient for a great deal prepared buffers.DisadvantagesMay be impossible to find table. Table may be incorrect. Requires both forms of buffer. Component amounts from table will need to be adjusted to give the buffer concentration and volume in your so lution. Ionic strength is unknown.Common Buffer PreparationsBufferStock SolnComponentsAmount per cubic decimetre Soln.Conc. Stock SolnFinal Conc.PBS(Phosphate Buffered Saline)adj. pH 7.310XNaClKClNa2HPO4-7 weeweeKH2PO480 g 2 g11.5 g 2 g1.37 M 27 mM 43 mM 14 mM137 mM 2.7 mM 4.3 mM 1.4 MmSSCadj. pH 7.020XNaClSodium citrate175 g 88 g3 M0.3 M150 mM 15 MmSTE(Saline Tris EDTA)1XTris baseNaClEDTA (acid) 1.2 g 0.6 g 0.29 g10 mM10 mM 1 mM10 mM10 mM 1 mMTAE(Tris acetate EDTA)pH 8.550XTris baseacetic acid (glacial)EDTA242 g 57.1 mL 37.2 g2 M (Tris acetate)0.1 M 40 mM (Tris acetate) 2 mMTBE(Tris borate EDTA)pH 8.010XTris baseboracic acidEDTA108 g 55 g 40 mL(0.5 M pH 8)0.89 M0.89 M0.02 M89 mM89 mM 2 mMTE(Tris EDTA)pH 7.51XTris baseH2EDTA (acid)1.2 g0.29 g10 mM 1 mMUseful buffer mixturesComponentspH rangeHCl,Sodium citrate1 5citric acid,Sodium citrate2.5 5.6Acetic acid,Sodium acetate3.7 5.6K2HPO4,KH2PO45.8 83Na2HPO4,NaH2PO46 7.54Borax,Sodium hydroxide9.2 11Universal buffer mixturesBy have substances with pKavalues differing by only two or less and adjusting the pH a wide-range of buffers can be obtained.Citric acidis a usable component of a buffer mixture because it has three pKavalues, separated by less than two. The buffer range can be extended by adding other buffering agents. The following two-component mixtures (McIlvaines buffer solutions) have a buffer range of pH 3 to 8.0.2M Na2HPO4/mL0.1M Citric Acid /MlpH20.5579.453.038.5561.454.051.5048.505.063.1536.856.082.3517.657.097.252.758.0A mixture containingcitric acid,potassium dihydrogen phosphate,boric acid, anddiethyl barbituric acidcan be made to cover the pH range 2.6 to 12.6Other widely distributed buffers areCarmody bufferandBritton-Robinson buffer, developed in 1931.Significance-An important do for any aqueous solution is its pH. The pH is the negative logarithm of the concentration of hydrogen ions (often represented as a hydronium ion, which is a water touch with an extra proton attached). Anything with a pH of less than 7 is considered to be acidic, and a solution that has a pH of greater than 7 is basic. Pure water, which has an decent amount of acid and base in it, is delineate as having a pH of 7.Identification-Buffered solutions are employ to make a solution that exhibits very little change in its pH when small amounts of an acid or base are added to it. A buffer can be made by addition of a weak acid and its flux solution base to a solution. Alternately, a weak base and its conjugate acid can be apply. Buffers are most effective when the amounts of the weak acid/base and the conjugate base/acid are usedgenerally to be effective, neither quantity should be more than 10 times that of the other.Control of ph by bufferBuffers are chemicals that, when added to water, tend to maintain a certain pH. This is due to the buffers ability to either accept or donate a proton (hydrogen ion, H+) or hydroxyl (OH-) to keep the pH in a certain range. Buffers are different than strong acids and bases because buffers do not donate all of their protons or hydroxyls within their buffering range.Background-The measure of pH gives the concentration of hydrogen ions in a solution. Pure water has a pH of 7.0 and has an equal balance of hydrogen ions and hydroxyl ions. The pH will be lower if an acid is added and higher(prenominal) if a base is added. For various purposes, it is helpful to add a buffer so that the pH remains unremitting even if an acid or base is added to the solution. Buffers are used to maintain incessant pH.Buffer Equilibrium-Different buffersworkat different pHs. A buffer is most efficient at maintaining a constant pH when the pH equals its acid dissociation constant, its pKa. At this pH, the buffer consists of an equal solution of protonated and de-protonated conjugate base. This often denoted by a theoretical buffer molecule, AH, dissociating into a proton, H+, and the conjugate base, A-. The pKa is determined by the pH where the concentratio n of AH equals the concentration of A-.Buffering Acids-At its pKa, a buffer can maintain a constant pH by accepting free protons. Adding an acid to the solution, such as HCl, will cause free protons to enter the solution. The conjugate base will accept the free protons, causing the pH to be unchanged. The solution will remain at the same pH as pine as there is enough conjugate base to accept the extra protons. The reaction can be written as the adjournment of the acid HCLH+ + Cl- leading to free H+ in the solution. The further reaction with the buffer occurs H+ + A- HA. This removes the free protons and constant pH is maintained.Buffering Bases-Adding a base such as sodium hydroxide to a solution will cause an increase in the hydroxyl concentration. In a buffered solution, the protons attached to the undissociated buffer are donated to the solution, forming H2O with the free hydroxyls. This counters the effect of the base and maintains the pH of the solution as long as there is undissociated buffer available in the solution. In this case, the reaction can be written as the dissolution of the base NaOH Na+ + OH- leading to the second reaction of OH- + HA H2O + A-.Different Buffers-Different buffers have different pKas and can be used to buffer solutions at a wide range of pHs. Chemicals used as buffers often have the ability to donate or accept dual protons or bases. These buffers hence have two or more different pKas corresponding to how many an(prenominal) protons or hydroxyls per molecule they can donate or accept. Different buffer molecules can be combined to form customized buffer ranges. For a list of biological buffers, see Resources.WORKING OF BUFFERWhen hydrogen ions are added to a buffer, they will be neutralized by the base in the buffer. Hydroxide ions will be neutralized by the acid. These neutralisation reaction reactions will not have much effect on the boilersuit pH of the buffer solution.When you select an acid for a buffer solution, tr y to choose an acid that has a pKaclose to your desired pH. This will give your buffer nearly equivalent amounts of acid and conjugate base so it will be able to neutralize as much H+and OH-as possible.PURPOSE OF BUFFER-A buffer solution is used to resist changes in pH when a certain amount of strong acid or base is added to the solution. It is an important part of biological systems in living organisms as well as in the laboratory. The reason a buffer works to maintain a certain pH is that the concentration of weak acid and base is kept in a particularized ratio in line with the acid titration trim back.The titration curveA titration curve is a graph that relates the relative concentrations of a weak acid to its conjugate base by graphing pH versus amount of base added. In the vicinity of the titration curve where the graph is almost flat, the pH changes very little with added base and therefore this would be a good pH for the buffer.Buffer in cells and melodyThe main buffer fo und in living cells is the H2PO4/HPO4- buffer pair. In blood, the main buffer is the H2CO3/HCO3- pair. This system relies on dissociation of centuryic acid, which has a pKa of 6.37. The pH of human blood needs to remain at around a pH of 7.4 and therefore the system also involves deoxycytidine monophosphate dioxide transported to the lungs.Phosphate bufferThe phosphate buffer is based on tris (hydroxymethyl) aminomethane or TRIS. This buffer has a pKa of 8.3 and is found both in living organisms as well as used in the laboratory. It is a good buffer because it does not tend to interfere with the system being studied.Buffers in enzymatic reactionsLaboratory methods to isolate an enzyme use buffered solutions because an enzyme can only function in a narrow pH range. Enzymes are very sensitive to pH as well as salt concentrations. Therefore, it is important to use a buffer with a very good buffering capacity for the specific pH in order for the experiment to be successful.Physiologica l consequencesRespiration plays a role in buffering of blood by controlling the rate of public discussion depending on the need for hydrogen ions or increased moroseness. Increasing the rate of respiration is helpful when there is a buildup of hydrogen ions or acidity in the blood. The H+ ions bind to bicarbonate to form carbonic acid. This raises the take aim of carbon dioxide in the lungs. Increasing the level of respiration removes the excess carbon dioxide. Therefore, here the buffering system is used to keep pH level of the blood within the required narrow range.Features-The pH of a buffered solution is defined by the Henderson-Hasselbalch equation, which states that the pH of a solution is equal to the acid dissociation constant of the weak acid plus the logarithm of the ratio of the concentrations of conjugate base to the weak acid. The acid dissociation constant is a fig that defines the tendency of an acid to dissociate and form hydrogen ions. A strong acid will have a very low dissociation constant, whereas a weaker one may have a significantly higher one, around 5.Considerations-Buffered solutions have many applications in chemical manufacturing for processes that require a specific pH range towork. This is also true for the human body, which contains many enzymes that are only functional at a specific pH. away of this range, the enzymes are either unable to catalyze reactions, or in some case will misfold and become broken down thus, a mixture of carbonic acid and bicarbonate is used by the body to keep pH of the blood between 7.35 and 7.45.

Domestic Violence against Women

interior(prenominal) Violence against WomenA Comparative Analysis Of Domestic Violence Against Women In Ghana And UkAbstractDomestic Violence in the UK is widely accepted, accepted, dealt with as an issue. However in Ghana, repayable to illiteracy, culture, domestic fury is widely non recognised as an issue. There atomic number 18 no measures in part by the government to tackle the issue. The following aims to give a relative analysis of domestic strength in women in the UK as against women in Ghana. Secondary reports from the police, Charities (NGOs), journals and newspaper issues were used in doing this analysis. Results showed that cases of domestic madness against women in the UK were widespread. There is a social services structure to deal with these issues. Children who ar indirectly or directly affected by domestic violence can be identified in most cases and argon offered all dish out or necessary treatment. In Ghana, there argon many cultural barriers to first o f all getting the message of domestic violence across and secondly being accepted as an infringement of clement rights. There are no social structures in place to help these women. NGOs are the equivalent to social services in the UK, but cannot/are not as proactive. They rely on women coming forward and do not/cannot carry out investigations on suspicion of domestic violence. Children, who are directly or indirectly affected, tend to pass through unnoticed. This is due to the fact that culturally, children must be seen and not heard. In otherwise cases, childrens accounts are not believed over the older person out of cultural evaluate for the adult such a thing would be considered a taboo. In conclusion, the social workers involvement in women affected by DV and any think children are far more extensive than any involvement in Ghana. All in all, Ghana has a lot to learn and perhaps implement in order to tackle the issue of domestic violence in women and children.IntroductionTh is study will look at a comparative of Domestic Violence, hereon referred to as DV, in women in dickens disparate countries, Ghana and the UK. I chose to compare these two countries first and foremost because Im a Ghanaian and secondly because I have lived in both countries and soon studying social work in the UK. I have serve to know of the social workers involvement with women plagued by DV. I will in like manner include a little on the effect DV has on children in these two countries. It is my intention through this study, to highlight the perception and differences of DV between the two countries and to study the impact of social work(ers) in dealing with DV in these countries.In order to get a better understanding of how DV is perceived in the two countries, I would like to talk about the Demographics focusing on the culture and social standing of Ghana.Ghana DemographicsGhana is a outlandish found in West Africa, located on the Gulf and wop and is a few degrees north of the equator, giving it a warm climate. It spans 238, 535 feather km and has a population of about 23 million as of 2007. Colonised back in the days by the British, the national quarrel of the land has remained as English till this day.However, out of its ten recognised regions or counties, Ghana has more than 250 indigenous languages spoken. Within these regions and languages, many dialects and cultures overly exist. Each social group has its culture and each culture has a way of life. Ghanaians are mostly peace loving people. Tradition antics a very important part of the Ghanaians life right from birth (naming and fealty ceremonies), through to Puberty (initiation rites), to spousal (traditional marriage) and death (funeral rites). The legal system however, is a mixture of British law, applicable to criminal cases, and indigenous custom for well-mannered cases. Civil cases that concern customary matters, such as land, inheritance, and marriage, are usually heard by a tra ditional chief. People are generally wary of the judicial system, which can involve substantial costs and aleatory outcomes. They usually attempt to handle infractions and resolve disputes informally through individualised appeal and mediation. Strong extended family ties tend to exercise a mastery on deviant behavior, and family abideings are often called to settle problems before they fetch public. Marital disputes are normally resolved by having the couple meet with the wifes uncle or father, who will take on the role of a marriage counsellor and re unit of measuremente the parties. As culture and traditional customs play a large role, they go along way in specify or influencing acceptance of DV in the Ghanaian society as we shall look later.Ghana is a low income country with a per capital gross domestic product of only $400 (U.S.) per year. It has many economic and social problems especially in the areas of employment, housing, health, and sanitation. Ghana has an active Non governmental Organization (NGO) sector, with over 900 registered organizations that participate in welfare and development projects in health, education, micro financing, womens status, family planning, child care, and numerous other areas. The longest standing groups have been church-based organizations and the Red Cross. Most are back up by foreign donors. Urban voluntary associations, such as ethnic and occupational unions, also offer important social and economic assistance. The family unit is regarded as an important structure of the community and is held in high regard.

Supply chains and distribution in India

publish kitchen ranges and distri consummatelyion in IndiaAbstractIndias FMCG persistence has emerged as a distinct domain over the last few decades. Multinationals ar seeking to pursue growth opportuni confiscates in emerging merchandises delinquent to change magnitude world(prenominal)ization and contender. India is one such emerging commercialize that non moreover provides transnational companies with a large customer petty(a) hardly in any case welcomes western products. Having a presence in India means sourcing, pitiable and processing up to one billion or more units. In gain, the appeal expectations and the larger size of the consumer market bequeath shake off implications on append ranges. Excellent tally orbit strategies for India ordain involve adopting business exchangeable processes enabling products to smoothly change hands from the provider to the consumer turn adapting to the constraints of hail, root word availability and market s ize of the economy. separate constraints associated with political, religious or ethnic barriers may in like manner engage to be considered.The report is divided into ii major(ip) breachs. One deals with the statistical diffusion gyves prevalent in the urban market while the second part delves into the intricacies of the homespun diffusion market. We d stabbing the same variety showat for both the parts starting with an introduction into the latest trends found in the urban or farming(prenominal) market, then clearing our point with a lesson study and finally pre moveing what ar the challenges face up by the companies. add to locomoteher grasp circumspection in Urban neighborhood- psychiatric hospitalThe FMCG sector is the fourth largest sector in the country and has been evolution in folds in the past few decades. The sector has both organized and nonunionized players and the look of players in both the segments ar on increase, in addition to this there i s also an increase in the number of products introduced e truly year. Since the sector is characterized by the fast movement of goods and services its dependence on potent allow for string is heightser than that of any an other(a)(prenominal)(a) sector so allow for image management is become one of the ab bring out snappy functions. Supply chain management in urban sector typically refers to procurement of raw materials, processing them into finished products and distri only ifing them in the urban region till its reaches the end consumer. Every union/ firm in the FMCG sector has its take give chain models which be similar yet antithetical from one a nonher. Below are two examples of the run chain models.The provide chain management in urban regions is more to do with preferences for voice in logistic a firm can choose to conveyancing the product via railways, roadways, airways or in some case even waterways. An trenchant put out chain will enable the firm to m inimize the cost, maximise returns, match the supply to the shoot and ultimately satisfy the customers. An urban supply chain in more or less cases has clear cut distinction mingled with the inbound supply chain (pertaining to providing raw materials and components), in house supply chain (conversion process), outbound supply chain ( dissemination of good and services. The profile of the urban consumers plays a crucial role in determining the supply chain because at the end without the consumer there is no point in mental synthesis up the supply chain model. Strategic decisions like number of progeny the firm would turn in to distribute its product, the kind of outlet, method to transport the product, places from were the raw material is procured, manufacturing method (automated, semi automated or manual) etc are taken keeping the consumer and the utility of the product to the consumer in mind. This is on account that the urban consumers are well in builded and there are u mpteen competitors bit for that consumer.The Supply bowed stringed instrument of dominoes Pizza (India)dominoes Pizza in India dominos Pizza opened its first store in India in 1996. Jubilant FoodWorks Limited, a Jubilant Bhartia Group Company holds the Master Franchisee Rights for Dominos Pizza for India, Nepal, Sri Lanka and Bangladesh. Prior to Sep 24, 2009, the guild was kn declare as Dominos Pizza India Limited and underwent a name change, rest of the terms stay the same. The kick upstairsrs of the company are Mr. Shyam S Bhartia, Mr. Hari S Bhartia and Jubilant Enpro hidden Ltd. straight off Dominos has more than 300 stores in India with more than 9000 employees. According to the India sell Report 2009, we were the largest Pizza chain in India and the fastest growing multinational fast food chain between 2006-2007 and 2008-2009 in terms of number of stores.Over the historic period Dominos Pizza has focused on-Delivering cracking tasting pizzasSuperior caseExceptional C ustomer service call in global and act localValue for money offeringsBeing a home delivery specialist capable of delivering pizzas within 30 transactions or else FREERevenue in India70% of the revenue comes from home deliveries30% of the revenue comes from OTC sales30 minute pledgeDominos has its unique proposition that they deliver pizza at a customers doorstep within 30 mins of placing the order or they would grow the pizza free. They require positioned themselves as a brand that delivers happiness home (Khushiyon ki Home Delivery) has an emotional benefit which they offer to their customersDominos Supply Chain IntegrationShown below is a high level flow of the supply chain followed by Dominos Pizza, India-Raw Material Procurement dispersionLogisticsInventory ManagementOperational dodgingProduction ProcessQuality InitiativesCustomer ServiceRRaw Material ProcurementDominos has 4 commissaries or issue kitchens-cum-warehouses (Regional Centralized Facilities) in IndiaDelhiCater s to 54 outlets in NCR region including 33 outlets in Delhi City itselfBangaloreCaters to 90+ outlets a scratch conspiracy zoneKolkataCaters to 15+ outlets in KolkataMumbaiCaters to 80+ outlets in Maharashtra including 51 in Mumbai and 15 in PuneRaw materials like Wheat is brought in from Jalandhar and sent to commissaries in refrigerated trucks. Pizza peag is prepared using a proprietary recipe in the commissaries. They are then made into dough balls and sent to sell outlets in refrigerated trucks. Vegetables like tomato, capsicum, baby corn, onion and spices are purchased locally. Cheese is brought in from Karnal, Haryana. Food which is frozen is sent in these trucks at -18 deg Celsius.It uses a hub and mouth model with commissaries as Hub and retail outlets as spokes.LogisticsWheat (Jalandar) net profit Vegetables (Local) Cheese (Karnal)CommissaryRefrigerated Trucks Retail blowholesInventory ManagementMajor inventory consists of perishable items with a very subtle shelf life. round of the items are tabulated below-ITEMSHELF LIFEDough Ball3-4 yearsSeasoning and Toppings4-5 yearsOnion, Capsicum , Tomato5 daysCheese Blend4-5 daysChicken Meat2-3 daysCheese Dip4-5 daysMexican Wrap Base3-4 daysEach store maintains approximately 4 days of inventory since roughly of the items beget a shelf life of around 3-4 days. Inventory is refilled by trucks from the commissary every 4 days. there is a mini cold reposition in every outlet. Inventory levels are monitored centrally by POS (point of sales) entropy using Intura Vision (POS management system) installed in every outlet. Intura Vision is the simplest and most authentic point-of-sale management system available for delivery and alert service restaurant operations. Intura Vision stream casts every aspect of your operation, including order taking, address card processing, kitchen management, deliveries, inventory, and customer marketing, to shit your business more cost- streamlined and profitable. There are two POS per outlet. Orders are received in telephonic form also there are in-store orders.Production ProcessThe entire production process is streamlined into terzetto stages-Dough TableHere the pizza base is prepared. It is rolled out of the dough ball. There are three standard sizes Personal (8 inches), Medium (10 inches) and Large (14 inches). Personal, medium and large serves one, two and four persons various(prenominal)ly.Then cheese blend is applied on the base. The entire process of making a pizza base takes 1-2 minutes.Bake lineIn this stage nippings and seasonings are applied on the top of the prepared base. The choice of toppings depends upon the pizza ordered. Customers also score the facility to customise their own pizza by choosing their toppings from a variety of toppings available. Toppings can be veg, non-veg or both. Customer can also choose the seasoning they prefer depending upon the spices they would like to have in their pizza. The entire process of make line is 1 minute.VenThe pizza is then ready to be baked in oven. The temperature retained is 470 Fahrenheit. Oven has a capacity to bake 6-7 pizzas in one slot. The pizza ineluctably to be baked for about 5-6 minutes. The ovens used now-a-days are fully machine-controlled along with a conveyer belt, so that the flow is unremitting.In case of production in India, Dominos has a turnout of 1 pizza per minute. This meets the menstruation demand requirement. The constraint here is the oven. They have overcome this by withdrawing the 30 min guarantee during festivals like New Year, Christmas, Diwali and rush-hours.Operations StrategyDominos follows a hub and spoke distribution web wherein the 4 commissaries are the hubs and the retail outlets are the spokes. The raw material is replenished in the outlets from the hubs every 4 days or when it gets over, whichever is earlier. Vegetables are purchased locally (delayed differentiation). They have incorporated IST (interstore trans fer) to cater to sudden spikes in the orders during special occasions wherein inventory falls short. In such cases material from nearby store is transferred to the critical store so that there is no halt in operations. They also have functioning based costing for their employees where employees are given incentives depending upon the volume of sales which they achieve. high the sales better the incentives.Present status due to mismanaged Supply Chain in IndiaIn India, about 60% of food value is misplace in the supply chain from the farm to the final consumer. Consumers end up compensable approximately 35 share more than what they could be paying if the supply chain was refined, because of wastage as well as multiple margins in the present supply structure. Comparing with what returns farmers in India get (30%), in the the States the farmers can receive up to 70 percent of the final retail price and wastage levels are as low as 4 to 6 percent. Therefore we can appreciate the ben efits that could be generated from implementing those practices and tapping those skills for the supply chain in India. The significance can be understood by the fact that the logisticscost component in our country is as high as 7 10 percent against the global average of 4 5 percent of the sum total retail price. Therefore, the margins in the retail sector can be improved by 3 5 percent by bonnie improving the supply chain management.Supply Chain Challenges Urban IndiaSome key reasons of underperformance of supply chain management in urban India1. Supply chain attempt mitigation in an economic downturnsupplier financial risk,volatility in energy, commodity, labor rates and currency exchange, maverick economic recoveries.2. Searching for working heavy(p)FMCG companies will look to restrict inventory and lower operating or protracting costs.Buyers will look to expand payment termsSuppliers will drive to collect receivables more quickly, creating the requisite for a liquid buffer such as supply chain financing3. Shortening the supply chain by making proper use of conveying facilityCompanies will need to plan a distribution system that takes care of the realities of domestic expatriation infrastructure. Indias supply chains must contend with slow transit networks and inadequate infrastructure. For example, 70 % of Indias mobile trade is handled by just 2 of the 12 major ports. The Railways is also constrained when it comes to freight movements. Historically, the countrys rail capacity was limited to passenger traffic, and raft protested the use of rail for freight movement. Only of late has the government initiated efforts to promote rail shipments.Most commercial shipments in India make their journey aboard a truck. Hiring a carrier meant working with a bittie trucking company, as the country has no large, national transportation companies. A new-made study of the transportation industry found that the majority of carriers had less than pen tad trucks in their fleets. Scheduling deliveries and pickups also can be tricky. At present, most warehouses are located in the heart of Indian cities, and many municipalities terminate large truck movements during daytime hours. It is possible to negotiate special exemptions in some places, but generally shippers must plan on nighttime movements. other alternative is to unload large shipments at a cross dock outside the city and move orders to smaller vehicles for delivery.4). More free-trade agreements and more scrutinyThe entry of foreign players in the retail segment will increase rivalry even further. More crucially multi-national companies might be having more money at their disposal. Thirdly they will also have access to latest technology and a ready highly efficient model to implement from.5). Push-pull boundaryIncreased competition, and fluctuating demand will make it effortful to identify the points at which the flow of goods switches from universe pulled by consum ers to being pushed by extractors..6). Maintenance of safety stockInstead of having capacious safety stocks at different places, centralized place will have to be used to have even more cash liquidity and lesser availability of godowns.7) Judicious use of newer technologies and decision making tools social function of newer technologies such as RFID (Radio Frequency Identification) continue to change the way SCM systems are designed and managed. Until recently, barcodes were the primary means of tracking packages. The advent of cheap, reliable RFID technologies have eliminated the need to physically scan packages in shipment, storage, etc, since packages with the embedded chips can be remotely scanned.8) Creating a demand-driven supply chainTo stick out a demand-driven supply chain, FMCG companies must deploy performance-oriented supply chain practices, such as continuous monitoring and alert notification. This will give them a clear cerebration of their total supply network to a dapt to changes in demand and even up based on real-time insight into global operations. A reliable demand plan provides the foundation for sales and ops planning (SOP) which helps FMCG companies better tog daily operational more effectively balance supply and demand and make better decisions that impact both the top and bottom lines.9) Other problems faced.Inadequacies in infrastructure such as neglect of high quality road networks, power shortages and insufficient storage spaces.The current prink in property prices and rentals may render a few retail business models unviable.The retail industry loses to the tune of US$120 to US$130 million every year in frauds, thefts and employee pilferage, shop lifting, marketer frauds or inaccurate supervision despite using standard and forward-looking security featuresMultiple taxes at the federal and state level countryfied Market IntroductionThe FMCG sector in the urban areas is becoming preferably saturated (though it will continue to dominate in the next 8 10 years) while the penetration in the country-style areas are only about 1%.The cracker-barrel areas have and will continue to make up more than 50% of Indias total households and accounting for more than its current 66% contribution to total FMCG consumption. bucolic India has a large consuming class with 41 per cent of Indias middle-class and 58 per cent of the total disposable income.Currently, nearly 34% of the off take of FMCG companies come form sylvan areas. Companies like HUL, ITC and Colgate have already established good distribution networks in these regions. Other companies would start catering to these regions in near future. bod 1 Urban and Rural growth rates (Personal Care products)A huge segment of this market is currently flooded with obscure brands that are generally manufactured and distributed by small and medium enterprises. However, with the growing competition in the FMCG business, it has become difficult for SMEs to market thei r products sustainably. This is mainly due to the solidly established brand images of bigger players and the increasingly sophisticated demands of the urban customer. SMEs also lack the capital investment needed to compete with bigger players.However, with the growing economy, substantial business opportunities for FMCG producers have emerged in the Indian rural sector. The rural FMCG market is growing with a CAGR of 3-4%. In the case of products like soaps, talcum powder, cooking oil, tea, cigarettes and hair oil, the share of rural market crosses 50%. The capital expenditure of urban consumers on FMCG products is Rs. 49,500 crore, while that spent by rural population is over Rs.63,500 crore. This is indicates the growth rate and participation of rural FMCG markets in India. Despite the huge scope for FMCG products in the fast-emerging rural markets, some white-haired areas need to be worked out before SMEs can establish sustainable businesses Rural India does not represent a homo geneous market. The tastes and preferences of the consumers vary from govern to district in the country. With changes in the language and dialect, advertising has to be tailor-made specifically for different target consumers. Networks are not efficient to guarantee the distribution demands. Problems exist in reaching the interiors of the country. Initial expenditures to develop distributer networks are immense, because in Roads and communication networks are not efficient to tackle the distribution demands. As there is little consumer research regarding the rural markets, companies commit the folly of overestimating the awareness of product usage in the rural market. The Indian consumer is traditionally price sensitive and more so in the rural parts. Multinational companies that modify portions and packaging to create a greater value proposition have succeeded in targeting the rural consumer. The rural allocator cannot stock a large variety of products because of acknowledgment problems. Also as the retailer plays a vital role in the village in convincing the consumer about the usage of the product, it becomes imperative to provide sufficient randomness and infrastructure support to stock adequate inventory of goods. Major global brands have included villagers in their distribution channels, not only providing fight but also conveying the reach in the rural markets. While increased penetration of telecommunication has resulted in an increased awareness among villagers, it is still important to understand that a major chunk of rural community is not educated enough to comprehend the technicalities of the product/brand usage.Models for Rural distribution chainsApproach 1 Dedicated Rural Entrepreneur The single(a) is preferred to have a two wheeler and act as the spoke between the super stockiest and the villages in a hub and spoke model. He is expected to know the area well and has sufficient education to brave out a business. He is recruited to cover the nearby areas as well ( upto a 40KM range). He acts as the point of contact to receive and deliver the goods to the respective stores in his area of service.The analysis says this model works well for products that cost more than 75 per Kilo and the important part is that the company need not worry about the administration part of the operation.Approach 2 Distributor consolidation for urban and rural markets Here we are to consolidate the urban distributor and the super and sub stockiest into a single convocation to serve the retail outlets. This entity is supposed to cover the town and the villages nearby.Approach 3 Consolidated Distribution with tele-order bookingRural tele-density in India is expected to go up in the near future. This would help to remove the role of saleman an accelerate say communication with the rural retail outlets to the super stockiest. However the drawback is that the company might loose on the relationship with the retail store in the absence of a sales person.Approach 4 Distributor choice based on unutilized reverse logistics potentialAnother non-traditional form of collaboration for rural distribution could be to partner with other partner low-margin, high-reach players in rural markets. An example could be that of the dairy industry. The vehicles form the Dairy factories goes desolate to the rural areas for collection and comes back with the milk. So it could be used for the transportation of goods from the factory site to the rural areas.Pepsico Distribution ChainPepsico Indias distribution in rural areas thrives on two major factors -Third party outsourcingHub and spoke model in the rural areas.This mechanism is followed in the urban areas as well but in the rural regions the local entrepreneurs from the smaller spokes of the distribution channels. In all its operations the transportation is outsourced to the third parties. However there are some cases in which large distribution centres have their own fleet for transpo rtation of finished products.The major two challenges faced by the company in the Indian context are the insufficient distribution in the rural sector and the inherent market risks.Distribution forms a major part of the companys concerns as it not only accounts to the revenues lost but also the potiential market share. The concern is primarily because of the Physical conditions of the Indian market and also the low purchasing power of the rural customer base this results in the setting p of the distribution centre cost being high. Coupled to that we have the insufficient sales offsetting the set up cost.Another concern is the taste of the rural customer who is more attracted to the local succus store or the fruit stall thereby increasing the competition from the unorganized sector.In case of distribution we have the issue of the size of retail store. The retail outlets in rural areas are more or less Kirana stores and there is near complete absence of the retail chains. So the amoun t of inventory that can be stocked in the small retail stores is very small.Apart from the distribution channel issues we have the risk of the market conditions. The small shops in the rural areas lack the refrigeration or storage capacities. The inventory is kept to meet the demands for the day and most of it is kept out in the open dues to lack of storage facilities. Thus many a time during the rainy season we can see the arrest of these shops and sales of the products getting stalled.Pepsico has implemented the following strategies to overcome these concernsUtilizing the collective efforts of the small scale farmers, land holders and regional governmentAlliances with other multinationalsPromoting entrepreneurshipIt started with a strategy similar to project Shakti used by the Hindustan Lever, but alliances were with local entrepreneurs and other multinationals. Its started by making the entrepreneur the spoke of its regional distributional network in the rural areas and then w ent along with Hindustan levers to share its distribution network. This helps the entrepreneur having a larger spectrum of products for distribution and hence a better prospect.The distribution chain of Pepsico India has a fragmented design which can be largely attributed to the lack of transportation infrastructure. And this resulted in the creation of collaborative and entrepreneurial alliance that thrives with symbiotic existence. An example could be that of a supplier who Is willing to strike land holding from other farmersSupply Chain Management in Rural Market- ChallengesThe following are a few of the challenges that a company faces while managing its supply chain in rural markets.Multiple Tier, high Cost and Administration ProblemIn the first place, the rural supply chain requires a larger number of tiers, compared to the urban one. The long distances to be covered from the manufacturing points to the scattered consuming households cause this situation. At the minimum, the rural supply chain need the village-level shopkeeper, the mandi-level distributor and the wholesale/stockiest in the town. And on top of them are the producers own warehouse and branch office operations in selected centres. Such multiple tiers and scattered outfits push up the cost and make supply chain management a major problem. The scope of manufactures direct outlet such as showrooms or depots is quite limited in the rural market unlike in urban areas. It becomes expensive as well as unmanageable. The dependence of the firm on intermediaries is much greater in rural areas as direct outlets are ruled out. still controlling such a vast network of intermediaries is a difficult task. Control is mostly indirect. And because of these factors the firm has to be more careful while selecting the supply chain members in rural areas.Non-availability of dealersAnother problem is the availability of dealers. Many firms find that there are limited numbers of worthy dealers. Even if the fir m is willing to start from scratch and try out rank newcomers, the choice of candidate is really limited.Poor Viability of Retail OutletRetail sales outlets in the rural market suffer from forgetful viability. A familiar paradox in rural distribution is that the manufacturer incurs additional expenses on distribution, still the retail outlets find that the business in unremunerative. The scattered nature of market and the multiplicity of tiers in the supply chain use up the additional funds the manufacturer is prepared to part with. And no additional money comes to any of the groups. Moreover, the business volume is not enough to sustain the profitability of all the groups and the retail outlet suffers the most. short(p) Bank FacilitiesSupply chain in rural markets is also injure due to lack of adequate imprecateing and credit facilities. Rural outlets need banking support for three important purposes.To facilitate remittances to principals and to get fast replenishment of stock sTo receive supplies through bank (retiring documents with the bank)To facilitate credit from bankAs banking facilities are inadequate in rural areas, rural dealers are handicapped in all these aspects. It is as estimate that there is only one bank branch for every fifth village.Inadequate Credit FacilitiesInadequacy of other institutional credit is another constraint. Rural outlets are unable to carry adequate stocks due to lack of credit facilities. They are unable to extend credit to their customers. Thus there is a vicious circle of lack of credit facilities leading to inadequate stocking and loss of business, finally resulting in poor people viability of outlets.Lack of Transportation FacilitiesMany rural areas are not committed by proper transportation facilities. There are a very few villages with railways lines. Atleast 50 percent of the rural roads are peaked(predicate) surfaced, and many totally destroyed or severely damaged by the monsoons and remain unserviceable. Also the use of bullock carts looks inevitable for many years into the future. In such a scenario distribution of goods via any supply chain is a huge challenge in itself.Lack of Proper intercourse FacilitiesCommunication with these villages is difficult and highly expensive. Moreover, 300,000 villages in the country have no access to telephone. This acts as a hindrance to proper supply chain management.Other ChallengesApart from the above there are various other challenges that firms face on day on day basis like. mortified literacy rateDifference in languages and DialectsPrevalence of Seasonal DemandRural policyCaliber of the rural community- they have great acumen but they need intensive trainingSupply Chain Management in Rural Market- How to tackle the ChallengesIn order to tackle the problem of supply chain management the following strategies can be implemented.Satellite Supply ChainIn this system stockists are appointed in the major towns and feeder towns. They by and large discha rge the following functions (a) Financing (b) computer storage and (c) sub-distribution. Retailers in and around feeder towns get attached to these stockists. The manufacturer supply goods to the stockists either on consignment or on cash/credit basis. Further these stockists deliver the good to the retail market points or air markets. Over a period of time some retailers grow in stature and importance. If such retail points also coincide with centres of demand and transportation within the feeder town area, they are proud to stockists points. If 15-20 retailers were operating as part of the genuine stockists network, 5 or 6 get elevated over a period of time to stockists. Fresh retail points get established simultaneously out of which some get attached to the original stockists while others to the new one.This process continues as long as the market and consumption level keep expanding and the supply also catches up via such a supply chain. Just like second- propagation stockis ts, set of third generation stockists get established with the passage of time. At any point of time, a certain number or retail points hover round a particular stockist. Hence the system is called Satellite Supply chain distribution. The satellites have their own satellites too.The advantages of this system areMarket penetration takes place without manufacturer having to expand his direct stock points.This system can bring in ample rewards in terms of increased sales and lesser distribution costs.Syndicate Supply ChainThis solution is essentially for small companies tie up with leading companies that already has a presence in rural market and distribute products through there supply chains.Relying on Private Village ShopsTie ups with the village private shops are the cheapest and most favourable channels in the rural markets.Supply Chain Management in Rural Market- OpportunitiesIn the present scenario, companies operating in India will have only two options either