Rotation test with pairwise distance measures of sample vectors in a GLM

One way to cope with high-dimensional data even in small samples is the use of pairwise distance measures—such as the Euclidean distance—between the sample vectors. This is usually done with permutation tests. Here we propose the application of exact parametric rotation tests which are no longer restricted by the finite number of possible permutations of a sample. The method is presented in the framework of the general linear model.     

Eliciting survey cooperation: incentives, self-interest, and norms of cooperation

Given the weaker ties to community as noted by scholars such as Robert Putnam, survey researchers should not be surprised by a decline in survey participation over the past 10 years. This research analyzes the use of incentives coupled with introductory themes emphasizing cooperation and helpfulness--cooperative norms in American society--to understand their effects on survey response. This article analyzes two separate experiments (one phone and one mail) that provide evidence that norms of cooperation matter in the decision to participate in a survey, suggesting that this is particularly true at the refusal conversion stage. These results indicate that survey researchers may use such themes to their advantage, especially when conducting a nonresponse follow-up in a mail survey.     

Increasing aging content in social work curriculum: perceptions of key constituents

This mixed methodology study examines the perceptions of key constituents regarding methods for effectively integrating aging content into the foundation curriculum of the BSW and MSW program at the University of Georgia School of Social Work. Students were asked to complete a survey to determine their perception of geriatric content that existed within the foundation coursework. Following an analysis of the survey results, eight semi-structured focus group discussions were conducted with a purposeful sample of students, faculty, field instructors, social work alumni, older adults from the community, and representatives from aging agencies. The intention of these focus groups was to find out what aging content should be infused within the curriculum. The focus group meetings were held in various locations throughout Northeast Georgia and in one remote location in South Georgia. Participants were interviewed about the necessary skills and knowledge for social workers practicing with an aging population in the areas of: essential intervention skills, program policies and regulations, critical information needed to develop client service plans, strategies for addressing service delivery fragmentation, and community collaboration to support intergenerational family needs. The results of this study will be discussed to provide suggestions on how existing foundation courses can integrate aging content.     

Predictors of Depression Among Caregivers of Older Adults With Severe Mental Illness

Caregivers of older persons with severe mental illness (SMI) contend with the double challenge of providing assistance related to both the psychiatric condition and older age of their family member. Study explored factors influencing negative psychological outcomes experienced by caregivers (n = 96) of older adults with SMI. One-quarter of caregivers scored at or above the clinical point for depression. Low income, care recipient gender, poor health, problems dealing with care recipient’s symptoms and the interaction of health and problems dealing with symptoms were associated with higher rates of depression. Implications for service provision and future research are discussed.     

TEACHING THE PRODUCTION/OPERATIONS MANAGEMENT CORE COURSE: INTEGRATING LOGISTICS PLANNING ACTIVITIES

This paper discusses the benefits of restructuring the introductory undergraduate production and operations management (pom) course to improve its pedagogical effectiveness and to better convey the importance of integrating logistics planning activities. The introduction of a dynamic integrative semester-long case study which involves students in applying pom concepts and tools through a simulation game is reported.     

Aging with a severe mental illness: challenges and treatments

Severe mental illness (SMI) impacts many different facets of individuals' lives. As they age, those with SMI experience increased physical illnesses, functional impairment, cognitive deficits, and social disability. To promote more effective social work practice with this population, this article highlights the major biopsychosocial and family issues of aging with a psychiatric diagnosis. In addition, intervention approaches that have demonstrated efficacy are summarized along with ways to coordinate services across multiple service delivery sectors. Finally, future directions in practice and research are presented to develop additional methods of support for older adults with SMI and their families.     

Aging With a Severe Mental Illness: Challenges and Treatments

Severe mental illness (SMI) impacts many different facets of individuals' lives. As they age, those with SMI experience increased physical illnesses, functional impairment, cognitive deficits, and social disability. To promote more effective social work practice with this population, this article highlights the major biopsychosocial and family issues of aging with a psychiatric diagnosis. In addition, intervention approaches that have demonstrated efficacy are summarized along with ways to coordinate services across multiple service delivery sectors. Finally, future directions in practice and research are presented to develop additional methods of support for older adults with SMI and their families.     

The dynamics of hapū research relationships

Abstract

The Whakaki Lake Trust has a long history of being an active kaitiaki of Whakaki Lake and has developed a hapū-based restoration and enhancement programme at the Lake property. Part of this programme has involved working with a range of external agencies and researchers. Research relationships have become an important part of the restoration process to build the capability and capacity of hapū to execute activities associated with restoration. In addition, relationships have provided an opportunity to strengthen and expand the knowledge base that hapū can draw upon to inform ecological restoration and resource management decisions. Some of these relationships have been adversarial and a source of much frustration. As a consequence the Trust has developed very clear expectations and policy around working with others. My experience of developing a doctoral research project with Whakaki Lake Trust is used here to discuss hapū expectations of research and resultant academic dilemmas.     

Penalized Maximum Likelihood Estimator for Normal Mixtures

The estimation of the parameters of a mixture of Gaussian densities is considered, within the framework of maximum likelihood. Due to unboundedness of the likelihood function, the maximum likelihood estimator fails to exist. We adopt a solution to likelihood function degeneracy which consists in penalizing the likelihood function. The resulting penalized likelihood function is then bounded over the parameter space and the existence of the penalized maximum likelihood estimator is granted. As original contribution we provide asymptotic properties, and in particular a consistency proof, for the penalized maximum likelihood estimator. Numerical examples are provided in the finite data case, showing the performances of the penalized estimator compared to the standard one.