A Cox‐Aalen Model for Interval‐censored Data

The Cox‐Aalen model, obtained by replacing the baseline hazard function in the well‐known Cox model with a covariate‐dependent Aalen model, allows for both fixed and dynamic covariate effects. In this paper, we examine maximum likelihood estimation for a Cox‐Aalen model based on interval‐censored failure times with fixed covariates. The resulting estimator globally converges to the truth slower than the parametric rate, but its finite‐dimensional component is asymptotically efficient. Numerical studies show that estimation via a constrained Newton method performs well in terms of both finite sample properties and processing time for moderate‐to‐large samples with few covariates. We conclude with an application of the proposed methods to assess risk factors for disease progression in psoriatic arthritis.     

Measuring performance of two-stage network structures by DEA: A review and future perspective

Data envelopment analysis (DEA) is a method for measuring the efficiency of peer decision making units (DMUs). An important area of development in recent years has been devoted to applications wherein DMUs represent two-stage or network processes. One particular subset of such processes is those in which all the outputs from the first stage are the only inputs to the second stage. The current paper reviews these models and establishes relations among various approaches. We show that all the existing approaches can be categorized as using either Stackelberg (leader-follower), or cooperative game concepts. Future perspectives and challenges are discussed.     

Voices from Segregated Schooling: towards an inclusive education system

Romantown LEA, like other authorities in England and Wales, is adopting a policy of 'inclusion' in providing education for young disabled people. The reorganisation has involved the closure of Adamston, an all-age school for pupils with physical disabilities. This article addresses the meaning of 'inclusion' from the viewpoint of disabled people who have experienced segregated education. We draw first on the literature to offer an analysis of the documented views of survivors of special schools. Secondly, we explore the views and experiences of Adamston pupils prior to the closure of the school. In presenting what clearly represents a wide range of experiences we seek to take the debate beyond the sterile analysis of 'pros and cons' of special schools. We argue that voices from experiences of segregation are central in constructing 'inclusion' and essential in any process of change towards an education system which is truly inclusive.     

Women and Top Leadership Positions: Towards an Institutional Analysis

Women remain under‐represented in top leadership positions in work organizations, a reality that reflects a variety of barriers that create a glass ceiling effect. However, some women do attain top leadership positions, leading scholars to probe under what conditions women are promoted despite seemingly intractable and well‐documented barriers. Previous scholarship tends to posit individual‐level explanations, suggesting either that women who attain top leadership positions are exceptional or that potential women leaders lack key qualities, such as assertiveness. Much less scholarship has explored institutional‐level mechanisms that may increase women's ascension to top positions. This analysis seeks to fill this gap by testing three institutional‐level theories that may shape women's access to and tenure in top positions: the glass cliff, decision‐maker diversity, and the saviour effect. To test these theories we rely on a dataset that includes all CEO transitions in Fortune 500 companies over a 20‐year period. Contrary to the predictions of the glass cliff, we find that diversity among decision makers — not firm performance — significantly increases women's likelihood of being promoted to top leadership positions. We also find, contrary to the predictions of the saviour effect, that diversity among decision makers increases women leaders' tenure as CEOs regardless of firm performance. By identifying contextual factors that increase women's mobility, the paper makes an important contribution to the processes that shape and reproduce gender inequality in work organizations.     

Using YouTube vlogs to study women's experiences of participating in #MeToo

In our effort to study women's experiences of participating in the #MeToo social movement and the effects it has had on their lives, we employed YouTube vlogs posted under that hashtag, instead of interviews, as our source of experiential data. Few scholars have engaged in detailed reflections on vlogs as a source of qualitative data. Even fewer evaluate vlogs in relation to studying sexual violence, particularly women's experiences of participating in #MeToo. In this paper we contribute to these methodological discussions by reflecting on our use of vlogs in such a study, appraising the productive potentials and concerns related to qualitative vlog data. They afforded us several methodological benefits, but also entailed ethical and analytical challenges.     

Between book and cinema: late Victorian new media

The origins of new media can be located in the late 19th century, in the visual archive of this period. This antecedent of today's new media appeared first within the pages of the printed book and article, and its origin is related to the increasingly database style of organization of print media at this time. The organizational form of the visual archive that appeared within such printed pages, however, can also be connected to developments in the moral sciences, in particular, the investigation by physiologists of the material foundations of both vision and of thought. As both the eye and the brain became part of the same physical model, so the visual archive came to include both the database itself, and its organizational frame, within a single image.     

The home visit in child protection social work: Emotion as resource and risk for professional judgement and practice

This article conceptualises the role of emotion in social work home visits. It draws on findings from a qualitative study of initial child protection home visits in the United Kingdom. The research used narrative interviews and focus groups to examine how emotions arising from visits were registered in social workers' narratives. These visits were often challenging; social workers needed to manage their own emotions and those of the family, while at the same time investigating concerns and assessing need. This article identifies seven key emotional experiences associated with the home visit from the perspective of the social worker: going into the unknown; being intrusive; being disliked; fear of harm to self; fear of causing or allowing harm; pain, disgust, and distress; and “absorbing” emotion. It is argued that emotion plays a central role in home visiting and that professionals' emotional responses have important implications for the way they make sense of, and manage, home visits. Emotion is therefore conceptualized as both a potential resource and risk for social workers' professional judgement and practice.     

The Benefits of Reducing Gun Violence: Evidence from Contingent-Valuation Survey Data

This article presents an estimate of the benefits of reducing crime using the contingent-valuation (CV) method. We focus on gun violence, a crime of growing policy concern in America. Our data come from a national survey in which we ask respondents referendum-type questions that elicit their willingness-to-pay (WTP) to reduce gun violence by 30%. We estimate that the public's WTP to reduce gun assaults by 30% equals $24.5 billion, or around $1.2 million per injury. Our estimate implies a statistical value of life that is quite consistent with those derived from other methods.     

Functional Ability,Neighborhood Resources and Housing Satisfaction among Older Adults in the U.S.

The purpose of this study was to explore neighborhood resources that influence the housing satisfaction of older adults. The study included 10,146 participants from the 2009 panel of the American Housing Survey who were 65 years and older. Hierarchical regression modeling was performed to examine older adults’ perceptions of neighborhood resources and consequently the role these resources play in predicting housing satisfaction among community dwelling and residents of assisted living, controlling for age, sex, ethnicity, education, and housing maintenance. In addition, three levels of physical functioning among residents of assisted living were examined. Results showed that there were differences in housing satisfaction by residences and levels of physical functioning. Subjective evaluations of neighborhoods and the near surrounds were significant predictors of housing satisfaction. Results of the study suggest that policy makers and housing professionals need to continue to consider the role of supportive neighborhoods and social environments in promoting successful aging particularly for frail older adults.