Seasonality in U.S. Consumer Demand

This study uses a new body of quarterly, not seasonally adjusted, data to test various hypotheses regarding consumer demand. The almost complete demand system (ACS) was used to test for the various restrictions of economic theory and for the presence of seasonality. Zero-degree homogeneity, Cournot aggregation, and negativity were, for the most part, accepted. Tests showed that seasonal effects can be modeled by quarterly intercepts and that slope coefficients are homogeneous over seasons. Also, it was demonstrated that although habit plays a significant role, it is not as prominent as past studies have shown.     

Optimal two-point designs for the michaelis-menten model with heteroscedastic errors

We construct D-optimal designs for the Michaelis-Menten model when the variance of the response depends on the independent variable. However, this dependence is only partially known. A Bayesian approacn is used to find an optimal design by incorporating the prior lnformation about the variance structure. We demonstrate the method for a class of error variance structures and present efficiencies of these optimal designs under prior mis-specifications. In particular, we show that an erroneous assumption on the variance structure for the Michaelis-Menten model can have serious consequences.     

Small-fiber neuropathy: answering the burning questions

Small-fiber neuropathy is a peripheral nerve disease that most commonly presents in middle-aged and older people, who develop burning pain in their feet. Although it can be caused by disorders of metabolism such as diabetes, chronic infections (such as with human immunodeficiency virus), genetic abnormalities, toxicity from various drugs, and autoimmune diseases, the cause often remains a mystery because standard electrophysiologic tests for nerve injury do not detect small-fiber function. Inadequate ability to test for and diagnose small-fiber neuropathies has impeded patient care and research, but new tools offer promise. Infrequently, the underlying cause of small-fiber dysfunction is identified and disease-modifying therapy can be instituted. More commonly, the treatments for small-fiber neuropathy involve symptomatic treatment of neuropathic pain.     

Reshaping Responses to Children When Parents are Separating: Hearing Children's Voices in the Transition

Abstract

The present paper reports on the findings of a research project involving a literature review and telephone interviews with children whose parents had separated or divorced. The aim of the research was to hear children's accounts of their experiences and needs during the transition in order to inform the development of a child-centred model of service delivery. The author recommends a number of strategies to assist service providers to enhance the wellbeing of children experiencing family separations.     

Examining Organizational Functioning Through the Lens of Complexity Theory Using System Dynamics Modeling

ABSTRACT

The methodologies associated with complexity theory might serve as an adjunct to some of our more traditional behavioral social science research methods. While the latter has a well-established history in social work, the approaches related to complexity theory are just now gaining a foothold. One such approach is system dynamics modeling. This article will describe the application of system dynamics modeling to a well-known early intervention program. The manner in which it complements traditional research approaches will be discussed, and its unique contribution to understanding the organizational aspects of complexity theory will be highlighted.     

Experiences and early coping of bereaved spouses/partners in an intervention based on the dual process model (dpm)

This study was designed to test the effectiveness of the Dual Process Model (DPM) of coping with bereavement. The sample consisted of 298 recently widowed women (61%) and men age 50+ who participated in 14 weekly intervention sessions and also completed before (O1) and after (O2) self-administered questionnaires. While the study also includes two additional follow-up assessments (O3 and O4) that cover up to 14-16 months bereaved, this article examines only O1 and O2 assessments. Based on random assignment, 128 persons attended traditional grief groups that focused on loss-orientation (LO) in the model and 170 persons participated in groups receiving both the LO and restoration-orientation (RO) coping (learning daily life skills). As expected, participants in DPM groups showed slightly higher use of RO coping initially, but compared with LO group participants they improved at similar levels and reported similar high degrees of satisfaction with their participation (i.e., having their needs met and 98-100% indicating they were glad they participated. Even though DPM participants had six fewer LO sessions, they showed similar levels of LO improvement. Qualitative data indicate that the RO component of the DPM might be more effective if it is tailored and delivered individually.     

Environmental stewardship footprint research: linking human agency and ecosystem health in the Puget Sound region

Urbanization processes challenge ecosystem health in many metropolitan areas. New policy and program approaches are needed to restore and sustain natural systems as public agencies and organizations face greater demands and declining budgets. Environmental stewardship is an often overlooked intervention strategy, and the full potential of civic engagement by citizens on behalf of ecosystem health is little understood. Using a coupled systems approach, integrated analysis of social and ecological footprints can lead to greater theoretical understanding and more effective programs at the landscape scale. Here we outline two pilot studies as part of an emergent research program that is investigating the extent and impact of environmental stewardship. Qualitative interviews of stewardship managers revealed multiple dimensions of motivations and purposes for stewardship, ranging from the practical to the conceptual. A regional organization census yielded a surprisingly large number of organizations that conduct stewardship, with social and ecological values being of comparable emphasis. The initial research is based in the Puget Sound area of Washington State, U.S., but results have relevance to other urban areas. Pilot study findings now guide additional research effort about motivations, organizational networks, and theory of integrated socio-ecological systems to be derived from comprehensive footprint analysis of stewardship activity.     

Confronting adolescent bias and intolerance through cross-cultural immersion: an American-Croatian collaboration.

This article describes a partnership to develop youth leaders and positive interventions to reverse the cycles of violence and bigotry that come when young people experience the pain and trauma of growing up in a war zone. In Croatia, Project REACH (Recreational and Educational Activities for Children's Health) serves youth who have lost their families--and their innocence--in the senseless war and "ethnic cleansing" of the former Yugoslavia. Its partner, The Children's Village (CV), provides residential treatment services for youth who have lost their families as a result of chronic abuse or neglect and who have been exposed to high levels of family and community violence in one of the most beleaguered urban areas in the United States. The partnership exposed young people from these two supposedly different parts of the world to experiences that would enable them to examine their lives, their biases, and their assumptions about the world. It was hoped that participating youth would come to see their own potential to be leaders in breaking a cycle of violence, promoting tolerance and understanding, and creating a positive effect on the world around them.     

A HEURISTIC TECHNIQUE FOR TESTING FOR THE PRESENCE OF INTERACTION IN NONREPLICATED FACTORIAL EXPERIMENTS

Abstract  This paper suggests univariate and multivariate techniques for investigating interaction in nonreplicated factorial experiments. The tests can detect certain types of interaction, but they are not powerful against all possible alternative hypotheses. The two-way factorial experiment is discussed in some detail and an example is used to demonstrate the procedure. The procedure is compared to other tests for interaction. These comparisons show that the procedure can detect some types of interaction which other tests cannot. Likewise other tests can detect interaction this procedure cannot.