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981.
M.C. Jones 《Australian & New Zealand Journal of Statistics》1986,28(2):206-212
A moment identity based on the concept of weighted distributions is presented. The identity has potential applications to problems involving the manipulation of expectations of functions of random variables. Several examples, mainly concerning the evaluation of the risk of shrinkage estimators of several parameters, are given. 相似文献
982.
JC Higgins 《Omega》1985,13(6):495-500
This paper reviews the evidence of a number of surveys and case studies of corporate modelling in the U.K. Some general conclusions as to trends are drawn. Thus corporate models will display increasing modularity; will be more likely to include probabilistic elements; will more often incorporate physical flows; and will be generally linked to a greater number of other models in organisations. Micros are making a substantial impact as tools for running decision support systems both of the corporate model and the ad hoc model variety. Forecasting techniques are still greatly underutilised in many organisations. Although most corporate models are currently of the deterministic financial simulation type, the influence of management education will help the adoption of more advanced models by more numerate senior managers and accountants. Indeed there is already evidence that this is happening in some organisations. 相似文献
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Following McCal,, ‘quality of life’ is defined as objective social conditions necessary to the general happiness, where ‘happiness’ is understood in the broad sense, as including all forms of intrinsically valuable experience, not just ‘feeling happy’. The argument is then made that in order for this definition to be fully implemented happiness in the broad sense must also be assessed. The latter half of the paper is devoted to describing a set of procedures, collectively called ‘time-use auditing’, for determining the extent to which an individual person is happy, in the broad sense, in a stated interval of time. Intrinsically valuable experience is analyzed into two dimensions: duration and level. The first is determined by time-budgeting and the second (in a general way) by Maslow's hierarchy of needs. Specifically, Maslow's hierarchy is spelled out in concrete terms by means of “time-use rating structures’, each one specific to a particular time-use category; the authors have written rating structures for adolescents of either sex, ages 12 to 17 inclusive. By way of illustration, an audit of three weeks in the life of a 16-year-old girl is presented. The paper concludes with a discussion of what remains to be done, with special stress on writing time-use rating structures for other age groups and modifying structures already in existence to reflect the values of particular social groups. 相似文献
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986.
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989.
The traditional and readily available multivariate analysis of variance (MANOVA) tests such as Wilks' Lambda and the Pillai–Bartlett trace start to suffer from low power as the number of variables approaches the sample size. Moreover, when the number of variables exceeds the number of available observations, these statistics are not available for use. Ridge regularisation of the covariance matrix has been proposed to allow the use of MANOVA in high‐dimensional situations and to increase its power when the sample size approaches the number of variables. In this paper two forms of ridge regression are compared to each other and to a novel approach based on lasso regularisation, as well as to more traditional approaches based on principal components and the Moore‐Penrose generalised inverse. The performance of the different methods is explored via an extensive simulation study. All the regularised methods perform well; the best method varies across the different scenarios, with margins of victory being relatively modest. We examine a data set of soil compaction profiles at various positions relative to a ridgetop, and illustrate how our results can be used to inform the selection of a regularisation method. 相似文献
990.
Allison Kaiser Jones 《Serials Review》2018,44(3):188-192
AbstractThis article summarizes the North Carolina Serials Conference presentation “Green, Yellow, Red: Implementing a New Workflow for Collection Management at College of Charleston Libraries,” a case study evaluating a new workflow created by the Collection and Content Services Department at the College of Charleston Libraries to streamline the renewals process after significant departmental and staff changes. The librarians involved in creating the workflow found that they could not only use it to organize their renewals processes, but also to open communication with faculty regarding underutilized resources. 相似文献