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81.
Layered defenses are necessary for protecting the public from terrorist attacks. Designing a system of such defensive measures requires consideration of the interaction of these countermeasures. In this article, we present an analysis of a layered security system within the lower Manhattan area. It shows how portfolios of security measures can be evaluated through portfolio decision analysis. Consideration is given to the total benefits and costs of the system. Portfolio diagrams are created that help communicate alternatives among stakeholders who have differing views on the tradeoffs between security and economic activity. 相似文献
82.
Risk Assessment for Invasive Species 总被引:10,自引:0,他引:10
Although estimates vary, there is a broad agreement that invasive species impose major costs on the U.S. economy, as well as posing risks to nonmarket environmental goods and services and to public health. The domestic effort to manage risks associated with invasive species is coordinated by the National Invasive Species Council (NISC), which is charged with developing a science-based process to evaluate risks associated with the introduction and spread of invasive species. Various international agreements have also elevated invasive species issues onto the international policy agenda. The World Trade Organization (WTO) Sanitary and Phytosanitary (SPS) Agreement establishes rights and obligations to adhere to the discipline of scientific risk assessment to ensure that SPS measures are applied only to the extent required to protect human, animal, and plant health, and do not constitute arbitrary or unjustifiable technical barriers to trade. Currently, however, the field of risk assessment for invasive species is in its infancy. Therefore, there is a pressing need to formulate scientifically sound methods and approaches in this emerging field, while acknowledging that the demand for situation-specific empirical evidence is likely to persistently outstrip supply. To begin addressing this need, the Society for Risk Analysis Ecological Risk Assessment Specialty Group and the Ecological Society of America Theoretical Ecology Section convened a joint workshop to provide independent scientific input into the formulation of methods and processes for risk assessment of invasive species to ensure that the analytic processes used domestically and internationally will be firmly rooted in sound scientific principles. 相似文献
83.
This study examined positive and negative outcome expectancies for risk behaviors, and their association with engagement in risk behaviors, in a sample of 149 maltreated adolescents. “Outcome Expectancies” are evaluative social cognitions about what will occur as a consequence of one's actions. Risk behaviors and outcome expectancies for substance use, sexual behavior, and delinquency were assessed. In all regression models, positive expectancies were significantly related to risk behaviors while negative expectancies, with one exception, were not significantly related. In three of four regression models, significant interactions were found between positive and negative expectancies in predicting risk behaviors. The nature of the interaction differed by type of risk behavior. Beyond demonstrating associations between outcome expectancies and risk behaviors in a maltreated sample, this paper contributes to the study of social information processing by demonstrating significant interactions between positive and negative expectancies. 相似文献
84.
Coley RL Bachman HJ Votruba-Drzal E Lohman BJ Ligrining CP 《Children and youth services review》2007,29(2):193-215
Using a representative sample of over 900 low-income urban families from the Three-City Study, analyses assessed whether maternal human capital characteristics moderate relationships between mothers' welfare and employment experiences and young adolescents' well-being. Results indicate synergistic effects whereby greater maternal education and literacy skills enhanced positive links between mothers' new or sustained employment and improvements in adolescent cognitive and psychosocial functioning. Greater human capital also enhanced the negative links between loss of maternal employment and adolescent functioning. Mothers' entrances onto welfare appeared protective for adolescents of mothers with little education but predicted decreased psychosocial functioning among teens of more educated mothers. Results suggest that maternal human capital characteristics may alter the payback of welfare and work experiences for low-income families. 相似文献
85.
86.
The level of family therapist complementarity in the early, middle and late stages of therapy was explored. A micro-analysis of Salvador Minuchin with one family in successful therapy was conducted using the Structural Analysis of Social Behavior (Benjamin, 1974). Interactions from videotapes representing the three stages were coded. An ANOVA was used to compare sequences that occurred at least 5 times within any given stage. Level of therapist complementarity was significantly greater in the early and late stages than in the middle stage. Furthermore, level of therapist complementarity was significantly correlated with client change. Further research is needed to explore whether these findings can be generalized to other therapists and families. 相似文献
87.
Heather R. Wishik 《International Journal of Sexuality and Gender Studies》1996,1(2):129-152
The categories and language currently available to designate gender identity and sexual identity constitute over-simplifications, which do not adequately signify the complex interplays between gender and sexual orientation. It is also often difficult to recount honestly, in a way that is visible to the self and intimate others, our understandings of the complex interplays and frequent fluidity of our individual processes of gender identity development, sexual identity development, and forms of preferred erotic/sexual behavior. This essay proposes, in preliminary form, a theoretical and diagrammatic method, called a “life map,” for a context-rich illustration of an individual’s meandering journey of gender and sexual identity development. Using two illustrative lives, the essay includes cultural contexts for development as well as the gender and sexual identity locations of relationally intimate others. In addition, it suggests a framework for core types of desired erotic behaviors and provides examples of variations in such desires in relational and identity contexts. 相似文献
88.
89.
ABSTRACT Short-term study abroad programs are increasingly embraced by Australian schools of social work. These programs improve access to international experiences and have a demonstrable impact on academic outcomes. However, little is known about the factors that influence students who decide to participate in such programs. Using a qualitative semistructured design, eight Australian social work students were interviewed about their perspectives on the pre-application phase of a short-term study abroad program to Ireland that was advertised in early 2018. The findings reveal a number of multilevel structural, institutional, and personal enablers and barriers that impacted their decision to participate. Implications for future research, the tertiary education sector, and social work educators are identified, especially in terms of broader economic and political issues that contradict social justice and render the future of these programs precarious. IMPLICATIONS
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Short-term study abroad programs offer important learning opportunities for students, but there is a need to understand the dimensions that can impact the decisions of students to participate in these programs.
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The qualitative findings indicate that various factors impact on the participation of students, especially financial and caring responsibilities.
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Further research that is underpinned by a social justice lens is needed to address inequities in student participation.
90.
Debi A. LaPlante Heather M. Gray Leslie Bosworth Howard J. Shaffer 《Journal of gambling studies / co-sponsored by the National Council on Problem Gambling and Institute for the Study of Gambling and Commercial Gaming》2010,26(2):301-329
Cognitive measurement techniques, such as self-reports of behavior and reaction time measures, largely dominate the field of psychological research. It is uncommon for researchers to examine a phenomenon of interest by observing actual behavior within natural settings. To illustrate the existence of this methodological trend for gambling research, this article reviews systematically selected samples of the peer-reviewed literature related to lottery gambling in general and the literature related to pathological gambling and lottery more specifically. The results indicate that self-report surveys dominate the extant lottery literature, and experimental investigations of video lottery terminal gambling supplement those papers. This landscape encourages researchers to expand their methodological approaches to the study of lottery gambling. Currently, we know more about what research participants tell us they do with respect to lottery gambling than we do about their real-life lottery gambling behavior. 相似文献