Inference about permutation parameter in large samples

The estimation problem of a permutation parameter on the basis of a random sample of increasing size is considered. A necessary and sufficient condition for the existence of an estimator, asymptotically fully efficient for two different distributions families, is derived. We also study the application of this result to cyclic groups of order two and three.     

Complete designs with blocks of maximal multiplicity

The set of distinct blocks of a block design is known as its support. We construct complete designs with parameters v(?7), k=3, λ=v ? 2 which contain a block of maximal multiplicity and with support size $\text{b}{}^1\text{= (}{}^{\mathrm{v}}{}_3\text{) ? 4(v ? 2)}$. Any complete design which contains such a block, and has parameters v, k, λ as above, must be supported on at most (^v₃) ? 4(v ? 2) blocks. Attention is given to complete designs because of their direct relationship to simple random sampling.     

Meta-analysis of the impact of age structure on fertility

The paper uses a meta-analysis to comparatively evaluate the literature addressing the aggregate relationship between a populations age structure and fertility, as hypothesized by Richard Easterlin. The analysis is based on 334 estimated effects retrieved from 19 studies. The results suggest that several factors undermine the empirical support of the Easterlinian age structure/fertility link. These include the neglect of income, the use of relative cohort size to characterize the age structure, mis-specifications of the relevant age-cohorts, as well as the functional form and estimation technique. The results also suggest that the sample of published estimates possibly suffers from two types of publication bias, an under-representation of insignificant effects for small samples, and bias towards supportive effects in the earlier years followed by a bias towards negative effects as the literature matured.All correspondence to: Brigitte Waldorf. The authors appreciate the insightful comments and suggestions from two anonymous reviewers. The research also benefited from discussions with participants of the International Colloquium on Meta-analysis in Economics, Free University, Amsterdam, The Netherlands, December 2002. Finally, we would like to thank David Brown, Meagan Cahill, Angela Donelson, Calvin Farris, and Melaney Seacat from the University of Arizona for their research assistance. Responsible editor: Junsen Zhang.     

Information in experiments and sufficiency

We define measures of information contained in an experiment which are by-products of the parametric measures of Fisher, Vajda, Mathai and Boekee and the non-parametric measures of Bhattacharyya, Rényi, Matusita, Kagan and Csiszár. We use these measures to compare sufficient experiments according to Blackwell's definition. In particular, we prove that if δ_X and δ_Y are two experiments and δ_X≥δ_Y then l_X≥l_y for all of the above measures.     

Quality of life indicators and program evaluation

Social indicators and program evaluation research have much in common. Quality of life work specifically raises the question of objective versus subjective variables, aggregate data versus distributional and individual issues, and the reference standards used in judgment and evaluation decisions. This article presents perspectives on these issues from the orientation of quality of life research and proposes that these approaches have relevance for program evaluation work.     

B2B下服务质量对关系质量的影响研究

在B2B背景下,以认证行业的顾客为调研对象,探究了服务质量对关系质量的影响.在已有的研究基础上,界定了服务质量的4维度结构和关系质量的3维度结构,构建了服务质量对关系质量的影响模型.对认证行业的721家顾客企业的实证研究表明,过程服务能力对关系质量有着正向的影响,结果质量对关系质量中的合作性、适应性有正向的影响,对关系氛围则没有显著影响,而过程交互质量与潜在服务能力对关系质量的影响不显著.     

E.B.怀特《夏洛的网》中的生态幻想世界

美国作家E.B.怀特在小说《夏洛的网》中以生动幽默的笔触构筑了人类世界与自然世界。在两者的双峰对峙中,怀特呈现了人类世界的人类中心主义、对自然的破坏以及自然世界的清新美好、动物的友爱互助,从而表达了对人与自然的关系、爱、友谊等问题的思考,传达了深刻的思想内涵。在《夏洛的网》所呈现的幻想世界中,夏洛、坦普尔顿等动物有深刻的寓意,并形成对比映衬关系。     

人力资源决策支持系统的开发与设计

人力资源决策支持系统将人工智能专家系统和决策支持系统的三库一体化结构相结合应用于企业对人才评价的决策过程,这种评价是运用人工智能专家系统技术,采用人机对话方式,模拟专家面试时的思维方法,对被测者因人设问,因材施测,它是专家面试和情景模拟的计算机化。决策过程是在计算机中模拟出“管理动态环境”,决策者通过人机对话的形式进行管理实践、分析和决策。建立在决策支持系统基础上的人才评价体系可以为企业的管理层提供科学的辅助性的决策支持,构筑企业人才资源高地,使企业更有效地发现人才、吸纳人才、用好人才。     

Statistical Properties of a Modified Accelerated Design for Phase I Cancer Clinical Trials

We consider the semiparametric profile likelihood inference for the distribution function under doubly censored data. For further developments of the statistical inference based on the profile likelihood ratio and alternative tools such as the score or Wald-type inference, we discuss the structures of the profile likelihood estimators and their derivatives included in the score function and the Fisher function of the profile likelihood, establishing the consistencies of their estimators.