Estimation of the mean of the selected gamma population

Let л₁ and л₂ denote two independent gamma populations G(α₁, p) and G(α₂, p) respectively. Assume α(i=1,2)are unknown and the common shape parameter p is a known positive integer. Let Y_i denote the sample mean based on a random sample of size n from the i-th population. For selecting the population with the larger mean, we consider, the natural rule according to which the population corresponding to the larger Y_i is selected. We consider? in this paper, the estimation of M, the mean of the selected population. It is shown that the natural estimator is positively biased. We obtain the uniformly minimum variance unbiased estimator(UMVE) of M. We also consider certain subclasses of estikmators of the form c₁x₍₁₎ +c₁x₍₂₎ and derive admissible estimators in these classes. The minimazity of certain estimators of interest is investigated. Itis shown that p(p+1)^-1x₍₁₎ is minimax and dominates the UMVUE. Also UMVUE is not minimax.     

Social Context of Smoking Hookah Among College Students: Scale Development and Validation

Abstract

Objective: To develop an instrument that measures the social context of hookah use among college students. Participants: A pool of 50 potential items, based on 44 in-depth interviews with regular college hookah smokers, was administered to a sample of 274 hookah users between October and December 2011. Methods: Participants were approached in hookah bars and asked to complete the survey. Results: A principle components analysis revealed 3 reliable factors: social facilitation, family/cultural influence, and alternative to smoking cigarettes and drinking. These were examined across different categories of hookah use: Weekly hookah users were more likely to smoke in a context of social facilitation than the other 2 groups. Similar effects were observed for family/cultural influence. Asians were more likely to smoke in a context of family and cultural influence than non-Asians. Conclusions: This scale has potential for identifying situation-specific contexts of hookah use that may help in designing effective interventions for college students.     

Public perceptions of risk to forest biodiversity.

This study examines the perceived risks to forest biodiversity and perceived effectiveness of biodiversity conservation strategies among the general public. It tests the hypotheses that perceived risk to forest biodiversity is influenced by cognitive factors (value orientation and knowledge) and social-cultural factors (such as gender and environmental membership) and that risk perceptions influence other cognitive constructs such as support for natural resource policy and management. Data were collected from a sample of the general public (n= 596) in British Columbia, Canada by mail survey in 2001. Results show that insects and disease were perceived as the greatest risk. Educating the public and industry about biodiversity issues was perceived as a more effective conservation strategy than restricting human uses of the forest. Value orientation was a better predictor of perceptions of risk and perceived effectiveness of conservation strategies than knowledge indicators or social-cultural variables. Examining the indirect effects of social-cultural variables, however, revealed that value orientation may amplify the effect of these variables and suggests that alternative paths of influence should be included. Perceived risk showed an inconsistent association with perceived effectiveness of conservation strategies.     

Subsidiary power,cultural intelligence and interpersonal knowledge transfer between subsidiaries within the multinational enterprise

We propose that individual-level knowledge transfer between subsidiaries within a multinational enterprise depends on the perceived relative power of the subsidiary and the cultural intelligence of individuals. Using a sample of 333 research and development (R&D) subsidiary employees of foreign Multinational Enterprises (MNEs) in India, we find that the perceived subsidiary power has a direct positive significant effect on knowledge sharing, and an indirect significant effect, through organizational identification, on knowledge seeking. Further, cultural intelligence moderates the effect of organizational identification on knowledge seeking, and the indirect effect of the perceived subsidiary power on it. The findings highlight the role of organizational identification and cultural intelligence in explaining the impact of the perceived subsidiary power on interpersonal knowledge transfer within the MNE.     

走向"扁平化"的知识型城市

中国即将成为先进的知识经济大国的趋势,也为其他国家带来了发展机遇,、本文所研究的核心问题是,如果以知识经济发展为指导的管理政策作为工具,一个人口大国的发达与欠发达地区之间的不均衡是否能够以及如何能够“扁平化”。我们特别要关注的是正在发展中的知识社会是否能够缩窄知识鸿沟以及由此缩短整体的发展差距,“扁平化世界”的概念就是大家都在同一水平的起跑线上。我们选择以中国为例,是因为她悠久的历史和地缘政治的复杂性对其他发展中国家具有借鉴意义。不少学者们认为,是邓小平的改革开放政策改变了中国的落后面貌,但笔者却持相反观点,认为中国的兴衰成败,并不单纯地取决于国界的开放与否,而是取决于整个社会是否存在积极的学习态度以及可供借鉴学习的参照体．     

The intersection of social protection and mobilities: a move towards a ‘Practical Utopia’ research agenda

Currently, a number of contributions in mobility studies are looking for fruitful intersections with other ‘adjacent’ approaches . In this spirit, our theoretical paper argues to study one particular aspect: the intersection of social protection and mobilities. Currently, the provision of social services in the ‘West’ is strongly entrenched within nation-state logics, which assume that clients’ immobility is a precondition of service delivery and that national citizenship is the desirable conditionality of gaining social rights. To overcome such a wide-spread conflation of social security with state security, we introduce the heuristic concept ‘social protection’. It allows social security to be imagined beyond a state-centric perspective and avoids the pitfalls of either a citizenship or a migration approach by taking on a mobility perspective. Thus, for scholars anchored in mobility studies we propose how to develop a social security perspective in a progressive way. For readers from other areas, e.g. citizenship, migration or social policy, we will show how a mobility perspective enriched by a No Border approach can overcome a narrow Western, statist and static perspective on social security. Our goal is to conceptually open up what we call a ‘practical utopia’ research agenda, one that expands our political horizons for future and present socialities.     

Talking about work stress: Discourse analysis and implications for stress interventions

This study used discourse analysis to explore the way in which employees understand work stress. Twenty-two female clerical workers in a Canadian city participated in focus group meetings where they talked about and made sense of their experiences of work stress. The women's accounts were analysed using discourse analysis methods (i.e. an examination of how talk is constructed). The findings revealed that talking about being stressed provides a socially acceptable way of expressing discomfort and regaining a sense of importance that is lost through feeling under-valued and under-appreciated in the organization. In contrast, admitting to being unable to cope with stress was considered to be 'abnormal'. The stress discourse fosters a sense of helplessness and ambiguity by not acknowledging external influences on clerical workers' experiences, such as their place within the power structure of the organization, and by limiting their sense of agency and control over problems experienced at work. The implications of these findings for organizational culture and interventions are discussed. For example, employers are encouraged to be conscious of the messages being sent to employees about how negative emotions or distressing experiences at work are to be addressed (i.e. how 'stress' is to be managed). Recommendations are made for future research using discourse analysis, such as the examination of alternative discourses that aim to improve conditions at work.     

Nursing interventions for parasuicidal behaviors in female offenders

Parasuicide refers to the nonfatal, intentional, self-injurious behaviors frequently exhibited by individuals with features of a borderline personality disorder. In correctional systems, the rate of parasuicidal behavior among incarcerated female offenders can be high and intertwined with complex behavioral and social issues. Nursing interventions in the management and treatment of parasuicidal behaviors incorporating the principles of dialectical behavior therapy have been developed and implemented at the authors' institution. This treatment approach provides practical, effective nursing interventions including pretreatment orientation, strategies for use with threats to self-harm and during self-harming episodes, and follow-up treatment.     

An easy method of constructing latin square designs balanced for the immediate residual and other order effects

Bradley (1958) proposed a very simple procedure for constructing latin square designs to counterbalance the immediate sequential effect for an even number of treatments. When the number of treatments is odd, balance in a single latin square is not possible. In the present note we have developed an analogous method for the construction of such designs which may be used for an even or odd number of treatments. A proof has also been offered to assure the general validity of the procedure.