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排序方式: 共有53条查询结果,搜索用时 15 毫秒
1.
Max Travers 《The Australian journal of social issues》2009,44(3):273-289
A driving force behind the establishment of a qualitative data archive in the United Kingdom has been the oral historian, Paul Thompson. He has complained that there is a ‘strange silence’ among qualitative sociologists on re‐analysis, and that many have been reluctant to deposit data. The first part of the paper suggests that the common ethical and practical objections can be overcome in establishing an archive in Australia. However, there is a more serious underlying ideological objection: that archiving promotes and institutionalises a narrow empiricist version of qualitative research. The rest of the paper makes this case by examining teaching materials on a British website, by reviewing Thompson's arguments, and by considering some examples of re‐analysis by sociologists. It is argued that qualitative researchers should respond critically, but that it is possible to address and overcome these problems when developing an Australian archive. 相似文献
2.
Scheduling in a Management Context: Uncertain Processing Times and Non-Regular Performance Measures*
Decision makers often face scheduling problems in which processing times are not known with certainty. Non-regular performance measures, in which both earliness and tardiness are penalized, are also becoming more common in both manufacturing and service operations. We model a managerial environment with task processing times (which include sequenceindependent set-up times) prescribed by three-parameter lognormal distributions. Upon completion, each task derives a reward given by a particular piecewise-linear reward function. The objective is to select a sequence of tasks maximizing the expected total reward. The relative generality of the problem renders many enumerative methods inapplicable or computationally intractable. To overcome such difficulties we develop efficient priorityinduced construction (PIC) heuristics which build up a complete schedule by inserting tasks (singly from a list) into a partial sequence of tasks. In each partial and complete sequence a period of idle time is permitted prior to the first task. Performance on realistic-sized problems is very encouraging, with cost penalties averaging less than one percent. 相似文献
3.
Using confidential microdata from the US Census Bureau, we investigate the performance of Asian-owned businesses. Using regression
estimates and a special non-linear decomposition technique, we explore the role that class resources, such as financial capital
and human capital, play in contributing to the relative success of Asian businesses. We find that Asian-owned businesses are
more successful than white-owned businesses for two main reasons—Asian owners have high levels of human capital and their
businesses have substantial start-up capital. Using detailed information on both the owner and the firm, we estimate the explanatory
power of several additional factors.
相似文献
Robert W. Fairlie (Corresponding author)Email: |
4.
This paper uses personalisation and the capabilities approach to explore inclusive music classes for children with disabilities in Scotland. It provides a unique insight into the impact of participation through the voices of the disabled young musicians, their parents and tutors. The study highlights the power of inclusive spaces to transform lives, to build confidence and contest disabled identities. It engages in the spatial dynamic of opening up inclusive spaces, as well as exposing emerging tensions in the liminal space that is created through movement between safe and supported spaces and the antithesis, spaces that disempower and marginalise. The findings suggest good practice around personalisation, when conceived of from a social justice perspective, as a template for working with other marginalised groups and in other professional settings. 相似文献
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In a clinical trial comparing drug with placebo, where there are multiple primary endpoints, we consider testing problems where an efficacious drug effect can be claimed only if statistical significance is demonstrated at the nominal level for all endpoints. Under the assumption that the data are multivariate normal, the multiple endpoint-testing problem is formulated. The usual testing procedure involves testing each endpoint separately at the same significance level using two-sample t-tests, and claiming drug efficacy only if each t-statistic is significant. In this paper we investigate properties of this procedure. We show that it is identical to both an intersection union test and the likelihood ratio test. A simple expression for the p-value is given. The level and power function are studied; it is shown that the test may be conservative and that it is biased. Computable bounds for the power function are established. 相似文献
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Robb J. Muirhead Alan J. Oppenheim Keith N. Johnson William Greene Halina Frydman 《商业与经济统计学杂志》2013,31(1):135-141
This article examines some difficulties associated with the Haynes–Stone model and attempts to clarify how the model can be justified as representing the hypothesis that “quantity is demand determined and price is supply determined.” It also argues that the applications of such a model as was done by Haynes and Stone might not have resolved the controversies related to the Phillips curve and the supply function of exports (or imports). 相似文献
10.
Empowerment has become a widely used management term in the last decade or so, though, in practical terms, it shares the ambiguity of its predecessors in the HRM tradition. This paper sets out to unravel the web of meaning surrounding empowerment to show what a contested concept it is, and hence why its application in organizational settings is fraught with misunderstanding and tension. It does so by taking an approach that contributes to the examination of HRM discourse and management rhetoric. To demonstrate the ambiguity of empowerment as a concept, the paper reviews the various ways in which the term has been used across non-management disciplines (women, minority groups, education, community care, politics), culminating with a review of the use of empowerment in contemporary management theory. The paper concludes that organizations and managers have chosen to coin a phrase which is open to different, sometimes contradictory, meanings and which, when applied, evokes both subjective attitudes and objective behaviour, means different things in varying contexts, and is affected fundamentally by individual differences in perception and experience. Unless organizations offer clear operational definitions when using empowerment, instead of purely acquiescing to a vague and seductive version of the concept, they are abdicating responsibility for the unpredictable consequences that result. 相似文献