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181.
This paper is devoted to robust Bayes sample size determination under the quadratic loss function. The idea behind the proposed approach is that the smaller a chosen posterior functional, the more robust the posterior inference. Such desired posterior functional has been taken, in the literature, as the range of posterior mean over a class of priors but we show that dealing with the posterior mean is not the only method leading to an optimal sample size. To provide an alternative approach, we propose implementing most stable rules into the context of sample size determination. We discuss properties of the desired most stable estimate and provide some examples in the normal model. We then compare the proposed approach with that of a recent global robustness study from both numerical and theoretical aspects. We illustrate the practical utility of our proposed method by analyzing a real data set. 相似文献
182.
Suppose upper kth records were observed from an X-sequence of iid continuous random variables, and kth upper records from another independent Y-sequence of iid variables from the same distribution are to be observed. The Pitman closeness probabilities of these statistics are derived. For symmetric distribution, the Pitman closeness probabilities of kth record statistics to the population median, are also examined and it is shown that these probabilities are distribution free. Numerical computations are conducted to illustrate the results developed here. 相似文献
183.
A relatively newer computational technique adopted by statisticians is known as independent component analysis (ICA) which is used to analyze complex multidimensional data with the objective to separate it into components that are independent to each other. Quite often the main interest for conducting ICA is to identify a small number of significant independent components (ICs) to replace the original complex dimensions with. For this, determining the order of identified ICs is a pre-requisite. The area is not unaddressed but it does deserve a careful revisiting. This is the subject matter of the paper which introduces a new method to order ICs. The proposed method is based upon regression approach. It compares the magnitude of the mixing coefficients and regression coefficients of the regression of the original series on ICs. Their compatibility determines the order. 相似文献
184.
185.
Muhammad Aslam Aamir Saghir Liaquat Ahmad Chi-Hyuck Jun Jaffer Hussain 《Journal of Statistical Computation and Simulation》2017,87(18):3491-3502
In this paper, a control chart has been developed for the Conway–Maxwell Poisson (COM-Poisson) distribution using the modified exponentially weighted moving average statistic. The proposed chart provides an efficient detection of smaller changes in the location parameter of the COM-Poisson distribution. The performance of the proposed control chart has been evaluated by the average and the standard deviation of the run length distribution for various parameters. Better detecting ability has also been compared with the existing control chart using EWMA statistic. Using simulation, we also showed the detecting ability over the traditional EWMA chart. 相似文献
186.
The performance of a treatment is affected by the treatments applied to its adjacent plots, especially in the experiments of agriculture, horticulture, forestry, serology and industry. Neighbor designs ensure that treatment comparisons are least affected by neighbor effects, therefore, this is a rich field of investigation. In this paper, criterion for construction of universally optimal neighbor balanced designs is discussed. 相似文献
187.
A Model of Engagement Promotion in a Professionally Facilitated Online Intervention for Couples Affected by Breast Cancer
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Iana Ianakieva Karen Fergus Saunia Ahmad Alberta Pos Amanda Pereira 《Journal of marital and family therapy》2016,42(4):701-715
Professionally facilitated web‐based interventions for couples affected by an illness such as cancer are growing in popularity. Attrition rates for such online programs, however, are substantially higher than what is observed in face‐to‐face therapeutic contexts, and lower levels of participant engagement are associated with poorer outcomes. In the present investigation, a task analysis was employed to develop a model of engagement promotion in an online intervention for couples affected by breast cancer called “Couplelinks.” Results indicated that facilitators utilized a variety of meta‐processes, such as humanizing the technology, and associated “eBehaviors,” to maintain three relationships involved in promoting online engagement: (a) between the facilitator and couple; (b) between the intervention and couple; and (c) between the partners within the couple. 相似文献
188.
David M. Chooljian James Hallenbeck Stephen C. Ezeji-Okoye Robert Sebesta Hasan Iqbal 《Journal of social work in end-of-life & palliative care》2016,12(3):277-288
Hospital ethics committees (HECs) are typically charged with addressing ethical disputes, conflicts, and dilemmas that arise in the course of patient care. HECs are not widely viewed as having a therapeutic role for health care professionals who experience psychological distress or anticipatory grief in the course of discharging professional duties. A case is presented in which an ethics consultation was requested, chiefly, to secure emotional support for health care professionals who had been asked by a patient to discontinue life-sustaining treatments. As the case demonstrates, HECs may be called upon to provide emotional support and reassurance to health care professionals who willingly carry out psychologically difficult actions, even though these actions may be ethically uncontroversial. In providing this service, the HEC may not necessarily engage in its customary activity of deliberating an ethics issue and resolving a conflict but may still provide valuable assistance, as in the case presented. 相似文献
189.
Drawing on George Ritzer's sociological concept of McDonaldization, this article explores the transformation of burial practices in Kuwait. It is argued that traditional, religious, and private ways of dealing with death have been modernized using the fast-food model of McDonald's. This article examines Islamic teachings on burial and how that model has been applied to the traditional Muslim funerary services, including cemetery management, grave excavation, funeral prayers, burial, and condolences, to make them more efficient vis-a-vis more profitable. Based on personal observations and random interviews, the study finds that the state bureaucracy in Kuwait has made burial rituals more efficient, standardized, calculable, and controlled. Furthermore, several associated irrationalities are also considered. Findings suggest that some individuals may not be happy with these changes but there is no popular resistance to McDonaldization of the burial practices, probably due to the authoritarian and welfare nature of the State of Kuwait. 相似文献
190.
Rebecca Codrington Abeda Iqbal Jackie Segal 《Australian and New Zealand Journal of Family Therapy》2011,32(2):129-143
This article describes the difficulties a mainstream family therapy service experienced in working with families from a refugee background. The experience of six therapists and five bicultural workers, who are also the referring agents, was captured in focus groups, and the reflections that emerged shaped a four‐part approach for working with families from a refugee background. Live consultation, either by the family therapist or bicultural worker, is suggested as a way to marry the expertise of family therapists who are not cultural ‘insiders’ with the ‘lived experience’ and cultural expertise of bicultural support workers. The process of reflecting on therapeutic failure resulted in several principles for working therapeu‐tically with families with a history of refugee trauma, unmet resettlement needs and family relationship challenges. These include maintaining a flexible approach to therapy, ascertaining a clear understanding of the referral context, defining an explicit therapeutic contract from the first session, being mindful of the important role that language plays and terminating therapy if it is contra‐indicated. 相似文献