Permutation tests for the independence of a scalar and a unit vector

The problem of testing the independence of a scalar and a unit vector is re-examined in the context of a specific scientific problem which is described in Section 1. Several alternatives to the Jupp-Mardia (1980) statistic are suggested. The null distributions of all the statistics are discussed under permutations.     

THE CALCULATION OF CONFIDENCE REGIONS FOR EIGENVECTORS

An explicit algorithm is given for constructing a confidence region on the appropriate unit sphere for an eigenvector, given a large sample. It is assumed the eigenvector corresponds to the largest eigenvalue of Exx^T, a matrix with distinct eigenvalues, and that the estimation uses n^-1S?x_ix_ix^T. While the theory is generally applicable, the writer has in mind the special case where ∥x∥= 1 i.e. directional data.     

The Cloth of Field of Gold: Material Culture and Civic Power in Colonial Ibadan

The article focuses on a political controversy which occurred in Ibadan, a city in south-western Nigeria, during 1939. At face value, the contentious issue was a particular design of damask cloth. Ruth Watson suggests that the controversy was actually far more complex and argues that it cannot be understood unless one develops an historical reading of political culture in the city. This reading explores the cultural/symbolic meanings of political practices and how, at certain times, these practices served to generate material forms of civic power.     

Pre-testing innovation: Methodology for testing the design of management systems

Many innovations, such as the introduction of a new fertilizer by a farmer, or the use of a new raw material by a manufacturer, or the adoption of a new hairstyle by a lady of fashion, can be tested on a try-before-buy basis. The user (or anyone) can experiment with the proposed innovation in almost precisely the same form and circumstances that it intends to be used, before a firm commitment. Some innovations do not have this happy property. Decisions to go into a new business venture or to overhaul a management system (or to change the length of a lady's nose or to enter the state of holy matrimony) cannot be conveniently replicated before a largely irreversible commitment is made. The methodology of pre-testing such innovations must inevitably depend on evaluation by analogy. It is not well developed, much less theoretically validated.The research on which this paper is based was sponsored by the Defense Advanced Research Projects Agency and the Office of Naval Research, Contracts N00014-76-C-0074 and N00014-74-C-0263.     

Keynote Address

Abstract

Because of the increasing prevalence of eating disorders in college populations, it is increasingly important for student health services to identify affected individuals. Therefore, the authors analyzed the student health forms of member schools of the New York State College Health Association for the presence of items that would identify an eating disorder. Directors of health services that include specific questions about eating disorders on health forms were then surveyed for their opinions about this practice.

Specific items about eating disorders (anorexia nervosa, bulimia, vomiting to lose weight, laxative use to lose weight) were included on 5 of 111 forms. Less specific items including dissatisfaction with weight, being on a diet, or binge eating appeared on 10% of forms.

Approximately one-third of the students known by health service staffs to have an eating disorder reported this on their health form, when provided a specific opportunity to do so. Even though underreporting by students is potentially a problem in such circumstances, the health service directors all recommended the inclusion of items relating to eating disorders on student health forms.

“Human Papillomavirus Type 16 and Early Cervical Neoplasia,” CHRISTOPHER P. CRUM, et al. Flat warts (condylomata) of the uterine cervix are sometimes cytologically atypical and have abnormal mitotic figures; they are thought to be possible precursors of cancer of the cervix. Flat warts are caused by any of a number of types of human papillomaviruses (HPVs), one of which (HPV 16) has been previously associated with invasive cancer of the cervix. To determine whether HPV 16 is also associated with flat warts with abnormal mitoses, we analyzed 23 flat warts by DNA-hybridization techniques for the presence of HPV 16 and other HPV types, and correlated the results with the histology. Of 10 lesions with abnormal mitotic figures, 7 contained HPV 16, and 1 contained another type of HPV. Of 13 lesions without abnormal mitotic figures, only 1 contained HPV 16, and 7 contained other types of HPV.

We conclude that the presence of HPV 16 correlates with the presence of abnormal mitotic figures in flat warts of the cervix, and that this type of flat wart is a precursor of invasive cancer of the cervix. (New England Journal of Medicine 1984;310:880–3.)     

Creating the cult of a saint: Communication strategies in 10th century England

In late 10th century England, a little-known and long-dead bishop named Swithun was canonised and became one of the most-widely culted saints in the country. Behind the creation of the cult of Saint Swithun were communication and political strategies with aspects of brand creation and extension, fund-raising, message creation and delivery, and stakeholder engagement using tactics such as word-of-mouth, the creation of special events and music, and use of specially commissioned publications. Using the prism of modern public relations practice and theory, the creation and maintenance of this important saintly cult is reviewed.     

Discretionary Time of Chinese College Students: Activities and Impact of SARS-Induced Constraints on Choices

How people make choices about activity engagement during discretionary time is a topic of increasing interest to those studying quality of life issues. Assuming choices are made to maximize individual welfare, several factors are believed to influence these choices. Constraints theory from the leisure research literature suggests these choices are heavily influenced by intrapersonal, interpersonal and structural constraints. Within these constraints, the individual is motivated to make choices that maximize perceived personal welfare. Leisure affordance theory focuses on these motivations by suggesting the importance of more positive influences on choices within a set of constraints. In this study, an inventory of discretionary time activities and reasons for choosing these activities were documented for a sample of Chinese college students. Because data were collected during an unanticipated SARS epidemic, the impact of the SARS crisis on students’ daily choices was also examined in detail. Despite the constraints imposed by SARS and the attendant suspension of off-campus activities, some students did not perceive a change of daily life as a result, while others perceived positive changes in attitudes and behavior. Findings shed light on students’ experiences during a time of rapid change in Chinese society and higher education. Decisions made during this influential time of life are important because they may affect students’ future choices related to leisure and discretionary time.     

Systemic Influences on Career Development: Assisting Clients to Tell Their Career Stories

A challenge for career theory informed by constructivism is how to apply it in practice. This article describes a career counseling intervention based on the constructivist Systems Theory Framework (STF) of career development and the qualitative career assessment instrument derived from it, the My System of Career Influences (MSCI; M. McMahon, W. Patton, & M. Watson, 2005a, 2005b; M. McMahon, M. Watson, & W. Patton, 2005) refection process. The article provides an overview of the STF, describes the MSCI, and illustrates the application of the MSCI in a counseling process with an adolescent.     

A Critical Response to the Keys Young Report: Ending Domestic Violence? Programs for Perpetrators

This paper questions some of the continuing effects of the dominant theoretical construction of domestic violence in the light of the recent Keys Young report to National Crime Prevention. A re‐examination is made of patriarchy as the dominant theoretical underpinning and some of the consequences for service delivery and policy development are explored. Is it necessarily the case that we have now got our understanding and subsequent intervention strategies right and that all that is needed is a consolidation of the ideas and the tightening of funding arrangements?