A "Delta Method" Approach to Bahadur–Kiefer Theorems

We consider an approach to deriving Bahadur–Kiefer theorems based on a "delta method" for sequences of minimizers. This approach is used to derive Bahadur–Kiefer theorems for the sample median and other estimators.     

Science versus Human Welfare? Understanding Attitudes toward Animal Use

Scientists have been portrayed as having an uncaring attitude toward the use of animals and being inclined to reject the possibility of animal mind ( Baldwin, 1993 ; Blumberg & Wasserman, 1995 ), yet there is little empirical research to support these claims. We examined why disparate attitudes toward animal use are held. Scientists, animal welfarists, and laypersons (N = 372) were compared on questionnaire responses that measured attitudes toward four types of animal use, and factors that might underlie these views (including belief in animal mind). As expected, scientists and animal welfarists held polarized views on all measures, whereas laypersons fell between the two. Animal welfarists were consistently opposed to all types of animal use, whereas scientists expressed support for the use of animals for medical research, but not for dissection, personal decoration, and entertainment. Animal welfarists showed high levels of belief in animal mind for 13 animal types, and scientists believed some of the 13 animals to have at least a moderate capacity for cognition and most to have at least a moderate capacity for sentience. Hence, the negative image of the science community that is often portrayed was not supported by our data. Findings were discussed in relation to external (group membership) and internal (belief systems) factors, and it is concluded that some people hold fixed attitudes toward animal use, whereas others are more influenced by context.     

‘Joy is resistance’: cross-platform resilience and (re)invention of Black oral culture online

ABSTRACT

Existing research has affirmed that Black people historically mastered oral communication strategies to resist subjugation and oppression by dominant groups, and have emerged as leaders in technological innovation. This article takes seriously Black users’ social media engagement and focuses particularly on Black joy online. We analyze a rich collection of discourse spanning both Twitter and Vine through which Black users utilize the affordances of both platforms to challenge dominant narratives that demean and dehumanize Black people. We argue that Black users seize upon the interplay of the applications to not only express and foster joy, but to extend historic legacies of Black oral culture and further cultivate contemporary strategies that leverage – but also transcend – the affordances of each platform.     

Homeless and financially dependent adolescents as clients of a family agency 1

A wide range of issues are explored that are identified by incarcerated mothers during their participation in a Family Reunification Group at a prison for women. They include concerns regarding parent–child visits; lack of communication by child welfare social workers, attorneys, foster parents, and other caregivers; the Adoption and Safe Families Act (ASFA); lack of finances; past and present unresolved trauma issues; and the absence of notification of scheduled court hearings. This article also provides an in-depth look at how a group therapist established a therapeutic alliance with varied women in the group over a period of 5 years (2008–2013) and maintained a sense of professional self in this controlled setting. Finally, the implications for clinical social work practice and social work education are presented. Confidentiality is ensured with the use of de-identified case composite clinical material.     

Sparsity and smoothness via the fused lasso

Summary.  The lasso penalizes a least squares regression by the sum of the absolute values ( L ₁-norm) of the coefficients. The form of this penalty encourages sparse solutions (with many coefficients equal to 0). We propose the 'fused lasso', a generalization that is designed for problems with features that can be ordered in some meaningful way. The fused lasso penalizes the L ₁-norm of both the coefficients and their successive differences. Thus it encourages sparsity of the coefficients and also sparsity of their differences—i.e. local constancy of the coefficient profile. The fused lasso is especially useful when the number of features p is much greater than N , the sample size. The technique is also extended to the 'hinge' loss function that underlies the support vector classifier. We illustrate the methods on examples from protein mass spectroscopy and gene expression data.     

Determinants of Food Safety Risks: A Multi‐disciplinary Approach*

Abstract This research employs a multi‐disciplinary approach by developing a model that draws upon psychometric, cultural, and reflexive modernization perspectives of risk perception. Using data from a 1999 national telephone survey, we tested our model on three food risks— pesticides, Salmonella, and fat. Results showed that perceptions of risks do vary by the nature of the risk investigated. Consistent with the psychometric perspective, the level of knowledge and control varied by risk, but these differences did not correspond with levels of concern. Worldview variables were correlated with perceptions of pesticides, indicating the relevance of cultural approaches. High levels of concern associated with each food risk, and the robustness of the relationship between trust and the perception of food risks, raise the possibility that trust acts as a coping mechanism, which is consistent with the reflexive modernization approach. Knowledge and trust were significantly related to all three risks.     

Dementia policy revisited: an analysis of the state laws targeted towards individuals with Alzheimer's disease and other forms of dementia.

Even though state governments assume public responsibility for persons with dementia, formal analysis of state laws concerning individuals with Alzhemier's disease and other forms of dementia has been rare. We responded to this by collecting and evaluating state legislation targeted towards individuals with dementia. These laws were collected by searching online statutory archives and were defined by the type of action, year of passage, and legislative purpose. Our research revealed that the legislatures have targeted an average of slightly more than five action towards persons with dementia. We also discovered that the earliest legislative act targeting individuals with dementia was passed by South Dakota in 1939, and by the end of the 1997 sessions, 49 state legislatures had enacted at least one targeted law. We sorted the variety of legislative actions into eight categories and illuminated how the purposes of these laws differed from one state legislature to the next. This research expands knowledge concerning state policies targeting people with dementia, imtroduces a reliable method of collecting state laws, and contributes to the advocacy effort made on behalf of persons with dementia.     

Using an Objective Structured Clinical Examination for Bachelor of Midwifery students’ preparation for practice

BackgroundContemporary midwifery practice needs a rigorous and standardised assessment of practical skills, and knowledge to ensure that safety is maintained for both women and neonates before, during and after childbirth.AimTo evaluate the use of Best Practice Guidelines (BPG) for Objective Structured Clinical Examinations (OSCE) as a standardised tool to develop clinical competence of Bachelor of Midwifery students.MethodA pragmatic mixed method approach with surveys, focus groups and interviews was used to evaluate the OSCEs for first year students. Quantitative and qualitative data were combined to understand student and academic perceptions of students’ confidence for clinical practice following the OSCE.FindingsThirty-four students responded to surveys (response rate 94%); and 13 participated in focus groups. Two academic lecturers participated in an interview (100%). Two main themes emerged (1) the OSCEs improved student confidence (2) the OSCEs were relevant and prepared students for practice. Most students indicated that they practised for the OSCE using an integrated approach (70%), and that this assisted them in their approach to the assessment of the neonate or post-partum mother.ConclusionThe use of BPGs to ensure that OSCEs focus on important aspects of knowledge and practice helped students to learn and to perform well. Students’ confidence in their ability for the imminent professional experience placement was high. OSCEs designed with the BPGs should be implemented broadly across midwifery education to enhance students’ competence and provide rigorous meaningful assessment.     

A Comparison of the Effects of Material and Environmental Values on Vehicle Ownership

The results of a 1988 survey of Brisbane residents demonstrate a consistent linkage between the respondent's values and their preferences for vehicle ownership and use. Through the use of the ‘Dominant Social Paradigm’ - ‘New Environmental Paradigm’ theoretical framework (e.g. Cotgrove 1982) and the testing of ‘known groups’ (business people and members of the Rainbow Alliance) the following pattern emerged. The businesspeople were less willing to conserve fuel, and were more concerned with ‘comfort’ considerations when purchasing a motor vehicle than the Rainbow Alliance respondents who were more interested in utilitarian aspects. When subsamples with similar demographic/socioeconomic characteristics (males, respondents aged 35–49 years, respondents with household incomes between $20 000 and $49 999) were compared, the Rainbow Alliance respondents were more likely to own older, less valuable vehicles with small engines and manual transmissions. The businesspeople were more likely to own air-conditioned vehicles with poor fuel economy. This finding is an example of how people's values influence their vehicle purchasing decisions and is useful to policy-makers seeking to improve the efficiency of Australia's vehicle fleet.