Recommended Distributions for Exposure Factors Frequently Used in Health Risk Assessment

Although there has been nearly complete agreement in the scientific community that Monte Carlo techniques represent a significant improvement in the exposure assessment process, virtually all state and federal risk assessments still rely on the traditional point estimate approach. One of the rate-determining steps to a timely implementation of Monte Carlo techniques to regulatory decision making is the development of "standard" data distributions that are considered applicable to any setting. For many exposure variables, there is no need to wait any longer to adopt Monte Carlo techniques into regulatory policy since there is a wealth of data from which a robust distribution can be developed and ample evidence to indicate that the variable is not significantly influenced by site-specific conditions. In this paper, we propose several distributions that can be considered standard and customary for most settings. Age-specific distributions for soil ingestion rates, inhalation rates, body weights, skin surface area, tapwater and fish consumption, residential occupancy and occupational tenure, and soil-on-skin adherence were developed. For each distribution offered in this paper, we discuss the adequacy of the database, derivation of the distribution, and applicability of the distribution to various settings and conditions.     

Knowledge-based systems: A qualitative formalism

This paper examines knowledge-based systems (KBS's) and considers how they may be applied in the social sciences. KBS's are programs which use artificial intelligence techniques to solve complex problems. Characteristics of KBS's are illustrated with an example knowledge-based program (N-ACT) written in PROLOG which uses Goffman's dramaturgical model to analyze social interaction. The paper argues that KBS's offer a qualitative formalism capable of being applied to concepts and phenomena which have been beyond the scope of traditional mathematical models. KBS's can create explicit, reproducible, logically powerful knowledge systems while avoiding the Procrustean bed of mathematical formalism.This research took place in part while the author was on sabbatical leave from the University of Missouri and a post-doctorate fellow in medical computing and informatics on NIH Grant LM 07006 from the National Library of Medicine. The author would like to thank Peter H. Hall and two anonymous reviewers for their helpful comments on earlier drafts.     

Does ‘the China Option’ influence subsidiary technology sourcing strategy?

We draw on transaction cost economics and the technology innovation management literature to advance a contextual model of the link between the perceived influence of China on technology strategy and MNC subsidiary sourcing strategy. In particular, we hypothesize that the relationship between a perceived influence of China on technology strategy and MNC subsidiary process technology sourcing strategy is moderated by the innovation context. Here, we consider the innovation context to be externally represented by the appropriability regime and dominant design, while internally it is measured by the subsidiary's level of complementary assets. We test our predictions on a multi-industry sample of 111 MNC subsidiaries from the Association of Equipment Manufacturers. We find support for the moderating influence of the innovation contexts of appropriability regime and complementary assets.     

NGOS AND THE DEVELOPMENT OF CIVIL SOCIETY IN BULGARIA AND THE USA

This study examines the development of civil society and its ability to facilitate stronger democratic practices in Bulgaria using the USA as a comparison. Using data gathered from surveys of NGOs in 2006, we examine three sets of questions. First, what is the level of NGO organizational capacity? Second, to what degree are NGOs performing their mediating roles? Third, how do NGOs perceive their effectiveness in working with the state and its citizens. Our findings suggest that Bulgarian NGOs face a number of challenges when compared with US NGOs, which affect their ability to engage in civil society activities such as establishing horizontal ties with citizens and other groups.     

The social,emotional, and behavioral skill antecedents to college students' volunteering during the COVID-19 pandemic

The disruptions to community functioning caused by the COVID-19 pandemic spurred individuals to action. This empirical study investigated the social, emotional, and behavioral (SEB) skill antecedents to college students' volunteering during the COVID-19 pandemic (N = 248, Mage = 20.6). We assessed eight SEB skills at the onset of a volunteering program, and students' volunteer hours were assessed 10-weeks later. Approximately 41.5% of the sample did not complete any volunteer hours. Higher levels of perspective taking skill, abstract thinking skill, and stress regulation were associated with more time spent volunteering. These results suggest that strength in particular SEB skills can prospectively predict prosocial civic behaviors.     

Associations Between Friendship,Sympathy, and Prosocial Behavior Toward Friends

The current study examined the associations between multiple aspects of the friend relationship (connection, companionship, psychological control) and global prosocial behavior toward friends. Participants included 467 early adolescents (M age of child = 13.32, SD = 1.05, 49% female, 69% European American), and data were collected at two time points, roughly 1 year apart. Structural equation modeling suggested that friend psychological control was negatively associated with prosocial behavior toward friends, while friend connection was positively associated (via adolescent sympathy). Discussion focuses on the friend relationship as an important influence on adolescent sympathy and prosocial behavior toward friends.     

Interdisciplinary staff perceptions of an occupational therapy return to work program for people living with AIDS

The purpose of this qualitative study was to identify the perception of interdisciplinary staff members regarding the impact of a model work and independent living oriented program for residents in supportive living facilities. This study used focus groups and individual interviews to collect these perceptions. Staff members identified four areas of impact: utilization of a holistic and process-oriented approach, an ability to identify and work with the strengths of clients, emphasis on the learning of practical skills, and creating an intersection for all aspects of services. These findings point to the fact that staff members found the value that occupational therapy has to offer their overall programming by improving participation of clients with HIV in learning practical skills for use in their daily lives and in developing work related skills.     

The model of human occupation: understanding the worker who is injured or disabled

This paper discusses application of the model of human occupation to the worker with an injury or disability. Concepts from the model of human occupation (MOHO) are used to frame potential work-related strengths and weaknesses. Using MOHO as a framework to understand the worker with an injury or disability provides a more complete and holistic understanding of the many factors which can affect a worker. In particular, the model illuminates how factors of capacity, motivation, lifestyle, and environment inter-relate in determining a worker's success or failure. Implications for using the model to achieve a more effective work-related practice are discussed.