Shannon Information In k-records

In this article, we present results on the Shannon information (SI) contained in upper(lower) k-record values and associated k-record times. We then establish an interesting relationship between the SI content of a random sample of fixed size, and the SI in the data consisting of sequential maxima. We also consider the information contained in the k-record data from an inverse sampling plan (ISP).     

嘉庆六年京畿特大水灾生态原因及历史教训探析

嘉庆六年（1801）永定河决口，酿成五百年一遇的特大洪水。京畿直隶一带一百三十余个州县中，受灾地区达九十多个，堤防崩坍，房屋被毁，灾民流离失所，农作物减产绝收，给国家建设和人民生活带来重大损伤。此次灾害的原因既有17世纪全球整体气候变化所导致的极端天气，也有永定河特殊的地理情况，更有长期不当垦荒和滥砍滥伐所导致的严重的水土流失等原因。反思此次特大水灾的生态原因及历史教训，对于历史上整体大气候特别是极端气候的归纳分析，以及对今天的森林资源保护与正确开发等问题都具有重要的借鉴意义。     

大学生就业中的社会支持网络研究

大学生就业的过程，离不开家庭、亲友和社会各方的支持帮助。这里运用抽样调查和样本分析的方法，就安徽工程大学2011届本科毕业生的就业状况及其社会支持网络情况进行分析，进而了解大学生就业所需要的社会支持类型和渠道，以及它们在大学生就业中所发挥的作用，进一步完善社会支持网络理论，并在此基础上，提出改善大学生就业社会支持网络的建议和对策。     

The Micro-Formation Mechanism of Trade Conflicts between Large Developing Countries: India’s Anti-dumping Action against China

Abstract

Employing Grossman and Helpman’s “protection for sale” model, this article uses data on anti-dumping actions from 1999 to 2009 to perform a quantitative analysis of factors influencing India’s determinations of anti-dumping duties against China, and reveals the micro-formation mechanism of economic conflicts between China and India. We find that the political power of India’s anti-dumping plaintiffs markedly increases the tariff level of its final determinations and that the relationship between the import penetration ratio and duty rates depends upon whether the plaintiffs are politically organized. Further, there is a significant positive correlation between India’s anti-dumping duty rates and its unfavorable trade balance with China. This indicates that in determining anti-dumping duties, Indian authorities are clearly influenced by the political clout of their domestic interest groups. They are also motivated by the desire to keep down China and gain the upper hand in the face-off between the “dragon and the elephant.”     

企业财务状况与投资者关系管理--来自 IR 百强上市公司的经验证据

依据“2007年度中国最佳投资者关系管理百强”榜的评选结果,研究了企业财务状况对上市公司投资者关系管理的影响.结果表明,投资者关系管理与企业盈利能力负相关,与股东获利能力、发展能力以及企业现金流量能力正相关.研究还发现,公司规模和流通股比例有利于提升投资者关系管理水平.     

Young Women in the Australian Women’s Movement

This article explores and documents the role of young women in the contemporary Australian women’s movement. Through case studies of two very different groups of young women, working in submerged networks in the community and on university campuses, it aims to suggest the diversity of contemporary young feminist praxis. Further, it argues that the work that these young women are doing in discursively creating and maintaining a feminist political space is crucial to the future of the movement. Based in constructivist ‘new’ social movement theory this article suggests a way forward from the so-called ‘generational debates’ of the 1990s and argues that, through their own unique processes of collective identity, young women who are active in the Australian women’s movement are dealing with the conflicts that are essential to the movement’s survival.     

Planning for the 1950 Censuses of Population and Agriculture

The change from the z of “Student's” 1908 paper to the t of present day statistical theory and practice is traced and documented. It is shown that the change was brought about by the extension of “Student's” approach, by R.A. Fisher, to a broader class of problems, in response to a direct appeal from “Student” for a solution to one of these problems.     

Editor's Report

There are two common methods for statistical inference on 2 × 2 contingency tables. One is the widely taught Pearson chi-square test, which uses the well-known χ²statistic. The chi-square test is appropriate for large sample inference, and it is equivalent to the Z-test that uses the difference between the two sample proportions for the 2 × 2 case. Another method is Fisher’s exact test, which evaluates the likelihood of each table with the same marginal totals. This article mathematically justifies that these two methods for determining extreme do not completely agree with each other. Our analysis obtains one-sided and two-sided conditions under which a disagreement in determining extreme between the two tests could occur. We also address the question whether or not their discrepancy in determining extreme would make them draw different conclusions when testing homogeneity or independence. Our examination of the two tests casts light on which test should be trusted when the two tests draw different conclusions.     

Data-dependent probability matching priors of the second order

In this paper, we consider the preliminary test approach for the estimation of the regression parameter in a multiple regression model under a multicollinearity situation. The preliminary test two-parameter estimators based on the Wald (W), likelihood ratio, and Lagrangian multiplier tests are given, when it is suspected that the regression parameter may be restricted to a subspace and the regression error is distributed with multivariate Student's t distribution. The bias and mean square error of the proposed estimators are derived and compared. The conditions of superiority of the proposed estimators are obtained. Finally, we conclude that the optimum choice of the level of significance becomes the traditional choice by using the Wald test.