Oladipupo A. Olaitan and John Geraghty
The aims of this paper is to investigate simulation‐based optimisation and stochastic dominance testing while employing kanban‐like production control strategies (PCS) operating…
Abstract
Purpose
The aims of this paper is to investigate simulation‐based optimisation and stochastic dominance testing while employing kanban‐like production control strategies (PCS) operating dedicated and, where applicable, shared kanban card allocation policies in a multi‐product system with negligible set‐up times and with consideration for robustness to uncertainty.
Design/methodology/approach
Discrete event simulation and a genetic algorithm were utilised to optimise the control parameters for dedicated kanban control strategy (KCS), CONWIP and base stock control strategy (BSCS), extended kanban control strategy (EKCS) and generalised kanban control strategy (GKCS) as well as the shared versions of EKCS and GKCS. All‐pairwise comparisons and a ranking and selection technique were employed to compare the performances of the strategies and select the best strategy without consideration of robustness to uncertainty. A latin hypercube sampling experimental design and stochastic dominance testing were utilised to determine the preferred strategy when robustness to uncertainty is considered.
Findings
The findings of this work show that shared GKCS outperforms other strategies when robustness is not considered. However, when robustness of the strategies to uncertainty in the production environment is considered, the results of our research show that the dedicated EKCS is preferred. The effect of system bottleneck location on the inventory accumulation behaviour of different strategies is reported and this was also observed to have a relationship to the nature of a PCS's kanban information transmission.
Practical implications
The findings of this study are directly relevant to industry where increasing market pressures for product diversity require operating multi‐product production lines with negligible set‐up times. The optimization and robustness test approaches employed in this work can be extended to the analysis of more complicated system configurations and higher number of product types.
Originality/value
This work involves further investigation into the performance of multi‐product kanban‐like PCS by examining their robustness to common sources of uncertainties after they have been initially optimized for base scenarios. The results of the robustness tests also provide new insights into how dedicated kanban card allocation policies might offer higher flexibility and robustness over shared policies under conditions of uncertainty.
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The Corporation of the City of London are about to appoint a Public Analyst, and by advertisement have invited applications for the post. It is obviously desirable that the person…
Abstract
The Corporation of the City of London are about to appoint a Public Analyst, and by advertisement have invited applications for the post. It is obviously desirable that the person appointed to this office should not only possess the usual professional qualifications, but that he should be a scientific man of high standing and of good repute, whose name would afford a guarantee of thoroughness and reliability in regard to the work entrusted to him, and whose opinion would carry weight and command respect. Far from being of a nature to attract a man of this stamp, the terms and conditions attaching to the office as set forth in the advertisement above referred to are such that no self‐respecting member of the analytical profession, and most certainly no leading member of it, could possibly accept them. It is simply pitiable that the Corporation of the City of London should offer terms, and make conditions in connection with them, which no scientific analyst could agree to without disgracing himself and degrading his profession. The offer of such terms, in fact, amounts to a gross insult to the whole body of members of that profession, and is excusable only—if excusable at all—on the score of utter ignorance as to the character of the work required to be done, and as to the nature of the qualifications and attainments of the scientific experts who are called upon to do it. In the analytical profession, as in every other profession, there are men who, under the pressure of necessity, are compelled to accept almost any remuneration that they can get, and several of these poorer, and therefore weaker, brethren will, of course, become candidates for the City appointment.
The Sanitary Committee of a certain County Council, strong with the strength of recent creation, have lately been animated by a desire to distinguish themselves in some way, and…
Abstract
The Sanitary Committee of a certain County Council, strong with the strength of recent creation, have lately been animated by a desire to distinguish themselves in some way, and, proceeding along the lines of least resistance, they appear to have selected the Public Analyst as the most suitable object for attack. The charge against this unfortunate official was not that he is incompetent, or that he had been in any way negligent of his duties as prescribed by Act of Parliament, but simply and solely that he has the temerity to reside in London, which city is distant by a certain number of miles from the much favoured district controlled by the County Council aforesaid. The committee were favoured in their deliberations by the assistance of no less an authority than the “Principal” of a local “Technical School”;—and who could be more capable than he to express an opinion upon so simple a matter? This eminent exponent of scientific truths, after due and proper consideration, is reported to have delivered himself of the opinion that “scientifically it would be desirable that the analyst should reside in the district, as the delay occasioned by the sending of samples of water to London is liable to produce a misleading effect upon an analysis.” Apparently appalled by the contemplation of such possibilities, and strengthened by another expression of opinion to the effect that there were as “good men” in the district as in London, the committee resolved to recommend the County Council to determine the existing arrangement with the Public Analyst, and to appoint a “local analyst for all purposes.” Thus, the only objection which could be urged to the employment of a Public Analyst resident in London was the ridiculous one that the composition of a sample of water was likely to seriously alter during the period of its transit to London, and this contention becomes still more absurd when it is remembered that the examination of water samples is no part of the official duty of a Public Analyst. The employment of local scientific talent may be very proper when the object to be attained is simply the more or less imperfect instruction of the rising generation in the rudiments of what passes in this country for “technical education”; but the work of the Public Analyst is serious and responsible, and cannot be lightly undertaken by every person who may be acquainted with some of the uses of a test‐tube. The worthy members of this committee may find to their cost, as other committees have found before them, that persons possessing the requisite knowledge and experience are not necessarily indigenous to their district. Supposing that the County Council adopts the recommendation, the aspirations of the committee may even then be strangled in their infancy, as the Local Government Board will want to know all about the matter, and the committee will have to give serious and valid reasons in support of their case.
The purpose of this paper is to consider the impact having been in a gang has on being in a group in a democratic therapeutic community (DTC). In particular what characteristics…
Abstract
Purpose
The purpose of this paper is to consider the impact having been in a gang has on being in a group in a democratic therapeutic community (DTC). In particular what characteristics attract (in this case) males to join a gang and or group, and what is the impact on a DTC of having former gang members in it.
Design/methodology/approach
The paper is a discussion paper considering the implications of the points raised above. It also includes results of research relating to the “Changing the Game” programme.
Findings
The findings result from experience of having worked in the environment, reviewing available literature, conducting research and having managed some of the issues raised. It is not a research paper but does present findings.
Research limitations/implications
This is a conceptual paper which incorporates findings from this author and others on the impact of gangs in a DTC. There is limited research in this area and so much is drawn from findings in other settings.
Originality/value
Little is written on the impact of having been in a gang and the dynamics that introduces in a forensic DTC. Therefore, it is hoped that it will encourage further research in this area.
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Communications regarding this column should be addressed to Mrs. Cheney, Peabody Library School, Nashville, Term. 37203. Mrs. Cheney does not sell the books listed here. They are…
Abstract
Communications regarding this column should be addressed to Mrs. Cheney, Peabody Library School, Nashville, Term. 37203. Mrs. Cheney does not sell the books listed here. They are available through normal trade sources. Mrs. Cheney, being a member of the editorial board of Pierian Press, will not review Pierian Press reference books in this column. Descriptions of Pierian Press reference books will be included elsewhere in this publication.
Investigates the differences in protocols between arbitral tribunals and courts, with particular emphasis on US, Greek and English law. Gives examples of each country and its way…
Abstract
Investigates the differences in protocols between arbitral tribunals and courts, with particular emphasis on US, Greek and English law. Gives examples of each country and its way of using the law in specific circumstances, and shows the variations therein. Sums up that arbitration is much the better way to gok as it avoids delays and expenses, plus the vexation/frustration of normal litigation. Concludes that the US and Greek constitutions and common law tradition in England appear to allow involved parties to choose their own judge, who can thus be an arbitrator. Discusses e‐commerce and speculates on this for the future.
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Geraldine Akerman and Kate Anya Geraghty
Much previous research has explored the impact of group work on the therapist. The purpose of this paper is to examine how group members tolerate the powerful material discussed…
Abstract
Purpose
Much previous research has explored the impact of group work on the therapist. The purpose of this paper is to examine how group members tolerate the powerful material discussed in groups in a prison-based therapeutic community. The authors briefly describe the regime at HMP Grendon and previous research into the impact of group work on therapists.
Design/methodology/approach
A qualitative approach using a focus group was used to explore the impact of group work from the perspective of the group members. Themes emerging from the focus group were analysed using thematic analysis (Braun and Clarke, 2006). Participants included adult male violent and sexual offenders (n=10). The focus group was facilitated by two therapists, both based within HMP Grendon.
Findings
Overarching themes emerged from the data which included – the type of material that has an impact on residents; the impact of this material on group members; and how residents manage it. A series of subthemes within these were identified, with salient themes including: the difficulty in listening to others offence histories and past experiences, managing the feelings of guilt and shame which can be overwhelming, feeling vulnerable/exposed, experiencing positive feelings for the first time as well as the benefits of therapy in eliciting change.
Research limitations/implications
Uniquely the current study explores the impact of group therapy from the perspective of the group members. This is a previously unexplored area of research. As the study was conducted on a prison sample, it is unclear how well the findings would generalise to other populations. As such it is recommended that further research be conducted to validate the findings here.
Practical implications
The present study indicates that group members process transference and counter-transference similar to therapists. It is suggested that therapists can use these findings to build resilience in group members.
Originality/value
Previous research has described the impact of group work on therapists, uniquely this paper goes on to describe how group members process the material they are exposed to and how they manage their heightened emotions rather than acting on them. This should help therapists consider how best to develop resilience in group members.
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Matthew K. Wynia, Jacob F. Kurlander and Shane K. Green
Physicians are instrumental to our national defense against epidemics, whether natural or bioterror-related. Broadly speaking, they are obligated to help rapidly identify threats…
Abstract
Physicians are instrumental to our national defense against epidemics, whether natural or bioterror-related. Broadly speaking, they are obligated to help rapidly identify threats, prevent the spread of disease, and care for infected patients. Each task presents ethical challenges, including the need to address access to care, balance the medical needs of individuals and communities, and ensure that health professionals continue to treat infectious patients in spite of the risk they present. If physicians can acknowledge these duties and meet these challenges, they have an opportunity to strengthen medicine's public trust and professional identity.