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171.
172.
David A. Reingold Gregg G. Van Ryzin Michelle Ronda 《Journal of policy analysis and management》2001,20(3):485-504
This paper investigates the effect of urban public housing on the social capital and labor force activity of its tenants using cross‐sectional survey data from the Multi‐City Study of Urban Inequality (MSCUI). A structural equation model of the hypothesized direct and indirect effects of public housing and neighborhood disadvantage on social capital and labor force activity is specified and fitted to these data. The modeling results suggest that urban public housing is strongly associated with neighborhood disadvantage but has little or no direct effect on either social capital or labor force activity. And while public housing may have indirect effects on social capital and labor force activity through neighborhood poverty, these indirect effects appear to be small. These findings have implications for the current emphasis in urban public housing policy on moving residents into the private housing market and reducing poverty concentration. © 2001 by the Association for Public Policy Analysis and Management. 相似文献
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174.
Bert George Steven Van de Walle Gerhard Hammerschmid 《Public administration review》2019,79(3):330-342
Management tools are often argued to ameliorate public service performance. Indeed, evidence has emerged to support positive outcomes related to the use of management tools in a variety of public sector settings. Despite these positive outcomes, there is wide variation in the extent to which public organizations use management tools. Drawing on normative isomorphism and contingency theory, this article investigates the determinants of both organization‐oriented and client‐oriented management tool use by top public sector executives. The hypotheses are tested using data from a large‐N survey of 4,533 central government executives in 18 European countries. Country and sector fixed‐effects ordinary least squares regression models indicate that contingency theory matters more than normative isomorphism. Public executives working in organizations that are bigger and have goal clarity and executive status are more likely to use management tools. The only normative pressure that has a positive impact on management tool use is whether public sector executives have a top hierarchical position. 相似文献
175.
Nicolas Van de Voorde 《West European politics》2019,42(1):133-155
Traditionally, scholars have assumed that multiple office-holding (i.e. the combination of a local and national directly elected political mandate) leads to an enhanced electoral performance. Although the prospect of electoral benefits for such a mandate combination seems plausible, it remains unclear whether accumulating a national and local mandate does indeed provide an additional boost compared to holding either one prior to the election. Previous studies have only offered limited support for this assumption. For instance, they have focused exclusively on French national elections. This article, however, scrutinises whether dual mandate-holding pays off individually, for the candidate, as well as collectively, for the list as a whole in both Belgian national and local elections. The results here strongly suggest that cumul des mandats does not yield an additional electoral reward compared to single office-holders, contradicting both theoretical presumptions and normative beliefs. 相似文献
176.
ABSTRACTThis article assesses the validity of normative claims on how civil servant values in East Asian and Western European administrations differ. By triangulating quantitative and qualitative survey data from a sample of Chinese (n = 508) and Dutch (n = 238) civil servants, we aim to answer two main research questions: “How and why do ideal-type and real-life rankings of civil servant values differ between Chinese and Dutch civil servants?” and “Do differences reflect administrative traditions of both countries?” Our findings demonstrate that similarities exceed differences between value rankings. Surprisingly, ideal-type value rankings are more similar than real-life rankings, with only a few idiosyncratic differences reflecting administrative traditions. Chinese civil servants perceive institutional and systemic factors as reasons for incongruence between ideal-type and real-life rankings, whereas Dutch civil servants emphasize meso-level factors such as organizational public management reforms. We theorize on our results and we provide suggestions for future research. 相似文献
177.
Peter Van Ness 《现代国际关系(英文版)》2011,21(3):159-168
An arms race in space among the major powers would be immensely dangerous,destabilizing,and expensive.Russia,which has a long history in space technology dating back to Sputnik in 1957,does not have the resources or the political will to sustain such a race today.But China and the United States do. 相似文献
178.
Blencowe T Pehrsson A Lillsunde P Vimpari K Houwing S Smink B Mathijssen R Van der Linden T Legrand SA Pil K Verstraete A 《Forensic science international》2011,212(1-3):173-179
A decaying cadaver emits volatile organic compounds that are used by necrophilous and necrophagous insects in order to find their brood substrate. Although volatile organic compounds (VOCs) that are released by carcasses have been identified, little is known about the specific compounds that are used by these insects while searching for a brood substrate. Therefore, we have investigated the chemical ecology involved in the attraction of the necrophagous hide beetle Dermestes maculatus, which feeds as an adult and larva upon decomposing carcasses. Our aims have been to identify the responsible compounds in the odours of the carcass that are important for the attraction of the beetles. Furthermore, we have studied sex- and age-related differences in beetle attraction and tested whether the hide beetle can distinguish between various stages of decomposition by means of the emitted odours. Headspace collection of volatiles released from piglet carcasses (bloated stage, post-bloating stage, advanced decay and dry remains), coupled gas chromatography-mass spectrometry (GC-MS), gas chromatography with electroantennographic detection (GC-EAD) and bioassays were conducted to identify the volatiles responsible for the attraction of the beetles. Freshly emerged male beetles were attracted by the odour of piglets in the post-bloating stage (9 days after death; T(mean) = 27 °C) and the EAD-active compound benzyl butyrate. Statistical analysis revealed a higher relative proportion of benzyl butyrate in the odour bouquet of the post-bloating stage in comparison with the other stages. We therefore conclude that this compound plays an important role in the attraction of hide beetles to carcass odour. This underlines the potential use of D. maculatus for the estimation of the post mortem interval. The decomposition stage at which the female beetles are attracted to the odour of a cadaver remains unknown, as does the nature of this attraction. Pheromones (sexual or aggregation pheromones) might play an essential role correlated with their attraction to carrion and consequently with their attraction to the substrate for mating and ovipositioning. 相似文献
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Van Ryzin MJ 《Journal of youth and adolescence》2011,40(12):1568-1580
Although some research suggests that schools can be a source of protective factors for students, the processes by which school
environments impact students’ behavior, performance and adjustment over time are not clear. Guided by both self-determination
theory and hope theory, this article evaluated reciprocal effects among adolescent perceptions of the school environment,
engagement in learning, hope, and academic achievement. Using a sample of 423 students (M age 15.72 years; 46.7% female; 77.6% white; 30.9% eligible for FRPL) from five small secondary schools in the upper Midwest,
students’ perceptions of the school environment were linked to engagement in learning, which, in turn, was linked to change
in academic achievement and hope over the span of 1 year. Evidence was found for reciprocal links between earlier levels of
engagement and hope and later perceptions of the environment. These results suggest that the school environment represents
a potential leverage point for educational reform, and interventions that target students’ perceptions of autonomy, teacher/peer
support, and goal orientation may be able to promote engagement, hope, and academic achievement. In addition, such changes
may create a positive feedback loop in which change in academic performance and adjustment accelerate over time. 相似文献