Generalized Augmentation to Control the False Discovery Exceedance in Multiple Testing

Abstract.  A new multiple testing procedure, the generalized augmentation procedure (GAUGE), is introduced. The procedure is shown to control the false discovery exceedance and to be competitive in terms of power. It is also shown how to apply the idea of GAUGE to achieve control of other error measures. Extensions to dependence are discussed, together with a modification valid under arbitrary dependence. We present an application to an original study on prostate cancer and on a benchmark data set on colon cancer.     

A clarifying comparison of methods for controlling the false discovery rate

Traditional multiple hypothesis testing procedures fix an error rate and determine the corresponding rejection region. In 2002 Storey proposed a fixed rejection region procedure and showed numerically that it can gain more power than the fixed error rate procedure of Benjamini and Hochberg while controlling the same false discovery rate (FDR). In this paper it is proved that when the number of alternatives is small compared to the total number of hypotheses, Storey's method can be less powerful than that of Benjamini and Hochberg. Moreover, the two procedures are compared by setting them to produce the same FDR. The difference in power between Storey's procedure and that of Benjamini and Hochberg is near zero when the distance between the null and alternative distributions is large, but Benjamini and Hochberg's procedure becomes more powerful as the distance decreases. It is shown that modifying the Benjamini and Hochberg procedure to incorporate an estimate of the proportion of true null hypotheses as proposed by Black gives a procedure with superior power.     

朝核问题之中国作用的双重性及策略选择

自2002年10月以来,朝核问题一直成为国际社会关注的热点问题。"三方会谈"以及6轮"六方会谈"的成功召开把朝核问题纳入到一个多边框架下解决。尽管中国在朝核问题上发挥了其他国家所不可替代的作用,但是,从朝核问题的发展过程上可以看出,中国的作用也受到了一定的局限。尽管解决朝核危机的钥匙不在中国手中,然而中国在朝核问题上的立场和今后的政策趋向不容忽视,它不仅与中国的当前利益密切相关,而且也将影响到中国未来所处的国际环境,关系到朝鲜半岛、东北亚地区乃至整个国际社会的安全与稳定。     

谈高校英语专业口译测试的规范化设计

口译测试是检测考生口译能力并获取教学反馈信息的重要手段。本文分析了当前高校口译测试中存在的问题,并以交际测试理论为指导,对口译测试的原则、内容、题型和评分标准等问题进行了综合研究和探讨,在此基础上对高校口译测试的规范设计和合理实施提出了具体建议和方案。     

中国C2C电子商务网站的用户体验

通过学生用户试用在两个不同文化背景下设计出来的C2C电子商务网站——淘宝网和Ebay易趣,并进行初次网上购物体验活动,以及对测试后满意度问卷的分析,结果显示:在用户决定购买的过程中,网站概念/功能的传递和表达对用户的影响最大,它们会影响到用户的初次购买决定;而流程的跳转以及交互行为的不平衡会对用户的购买过程造成影响;对用户初次购物总体评价影响最大的是功能满足。两个网站的系统可用性与界面设计不能决定用户的总体评价,但却会影响到用户对网站的感觉。因此,创建一个对用户有用、好用和想用的购物网站就必须要满足功能、交互以及冲击三个层次的要求。     

Disposable waste,lands and bodies under Canada’s gendered nuclear colonialism

ABSTRACT

Nuclear colonialism, or the exploitation of Indigenous lands and peoples to sustain the nuclear fuel cycle from uranium mining and refining to nuclear energy and weapons production and the dumping of the resulting nuclear waste, occurs in many parts of the world and has generated considerable protest. This article focuses on a contemporary and ongoing case of nuclear colonialism in Canada: attempts to site two national deep geological repositories (DGRs) for nuclear waste on traditional First Nations land in Southwestern Ontario near the world’s largest operational nuclear power plant. Through histories of the rise of nuclear power and nuclear waste policy-making and their relationship to settler colonialism in Canada, as well as actions taken by the Saugeen Ojibway Nation (SON) and white settler anti-nuclear waste movements, the article explores how gender is at work in nuclear colonialism and anti-nuclear waste struggles. Gender is explored here in terms of the patriarchal nuclear imperative, the appropriation of Aboriginal land through undermining Aboriginal women’s status and the problematic relationship between First Nations and white settler women-led movements in resistance to nuclear waste burial from a feminist decolonial perspective     

Sexual orientation differences in HIV testing motivation among college men

Objective: To investigate sexual orientation differences in college men's motivations for HIV testing. Participants: 665 male college students in the Southeastern United States from 2006 to 2014. Methods: Students completed a survey on HIV risk factors and testing motivations. Logistic regressions were conducted to determine the differences between heterosexual men (HM) and sexual minority men (SMM). Results: SMM were more motivated to get tested by concern over past condomless sex, while HM were more often cited supporting the testing program “on principle” and wanting a free t-shirt. SMM and HM differed in behaviors that impact HIV risk and other demographics. However, differences in testing motivation by concern over past condomless sex or wanting a free t-shirt persisted when controlling for these demographic and behavioral differences. Conclusions: Appropriately designed HIV prevention interventions on college campuses should target SMM's distinct concern over past condomless sex as a testing motivation.     

Employee communication,job engagement,and organizational commitment: A study of members of the Millennial Generation

The purpose of this study was to explore the relationship between job engagement and two key components of employee-organization relationships (EOR). Findings from a survey of members of the Millennial Generation (N = 539) in the United States indicate that job engagement mediates the relationship between employee communication and organizational commitment. It is concluded that when employees are engaged in their work, their commitment to the organization is strengthened and the likelihood of them leaving the organization decreases. Furthermore, an argument is made in light of the study’s findings that engagement and commitment work in concert to strengthen EORs overall. To foster engagement, organizations should remove obstacles to internal information flow and provide ongoing feedback to employees about individual and organizational issues.