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91.
The implications of the institutional review board (IRB) system's growing purview are examined. Among the issues discussed are whether IRBs are censoring research and whether the IRB review process fundamentally alters the research that is being conducted. The intersection between IRB review and free speech is also explored. In general, it is argued that the review system for human subjects research (HSR) should be modified in order to limit the scope of IRB review.  相似文献   
92.
The South Carolina coastal zone is among the fastest growing areas in the U.S., and population epicenters are marked by dense brackish water pond (lagoon) coverage associated with housing complexes and golf courses. Surveillance efforts in 2001–2002 documented the widespread occurrence of several types of potentially or measurably toxic harmful algal blooms (HABs) in these ponds. These man-made retention ponds were constructed in order to serve as a buffer between developed areas and open estuaries or for aesthetic reasons. However, the combination of restricted tidal flow and nutrient and/or contaminant deposition creates a stimulatory environment for potential HAB formation. These discoveries introduce the need to consider mitigation measures to existing ponds and HAB preventive strategies for future pond construction.  相似文献   
93.
This article investigates whether and the extent to which “white flight” from Hispanic and Limited English Proficient (LEP) students has been occurring in California’s public schools and further, examines the level (school or district) on which “white flight” may operate. Using school-level administrative data from the California Department of Education from 1990 to 2000, we estimate exponential growth rate models of white enrollment with school-level fixed effects. The results shed light on the implications of immigration for school segregation in the United States. The analysis indicates that white enrollment declined in response to increases in the number of Spanish-speaking LEP and Hispanic students, and that “white flight” from LEP or Hispanic students occurred more at the district than the school level in the case of primary schools, and at the school level for secondary schools. In addition, schools with higher percentages of Spanish LEP students in the school than the district, and with higher percentages in the district relative to the county, experienced greater losses in white enrollments than other schools, thus suggesting that higher levels of segregation in the wider metropolitan area accelerate white flight.  相似文献   
94.
The central aims of this paper are: (1) to explore the utility of using personal correspondence as a source of data for sociological investigations into the history of sociology in the UK; (2) in relation to this undertaking, to advance the beginnings of a figurational analysis of epistolary forms; and (3), to provide an empirically-grounded discussion of the historical significance of the Department of Sociology at the University of Leicester (a University largely ignored in 'standard histories' of the subject) at a formative phase in the development of the discipline within the UK. The correspondence drawn upon in the paper is between Norbert Elias and Ilya Neustadt between 1962 and 1964 when Elias was Professor of Sociology at the University of Ghana and Ilya Neustadt was Professor of Sociology and Head of the Sociology Department at the University of Leicester. From an analysis of this correspondence, we elucidate an emergent dynamic to the relationship between Neustadt and Elias, one which, we argue, undergirds the development of sociology at Leicester and the distinctive character of the intellectual climate that prevailed there during the 1960s. The paper concludes with a consideration of whether it was a collapse of this dynamic that led to a total breakdown in the relationship between Neustadt and Elias, and by extension, an important phase in the expansion of sociology at Leicester.  相似文献   
95.
Adolescents take more risks in the presence of their peers, but the mechanism through which peer presence affects risky decision‐making is unknown. We propose that the presence of peers increases the salience of the immediate rewards of a risky choice. The current study examined the effect of peer presence on reward sensitivity in a sample of 100 late adolescents ages 18 through 20 (M=18.5) using a delay discounting task, which assesses an individual's preference for immediate versus delayed rewards. Participants were randomly assigned to complete the task alone or with 2 same‐age, same‐sex peers observing. Consistent with our prediction, adolescents demonstrated a greater preference for immediate rewards when with their peers than when alone. Heightened risk taking by adolescents in the company of their friends may be due in part to the effect that being with one's peers has on reward sensitivity.  相似文献   
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97.
This paper shows that the bootstrap does not consistently estimate the asymptotic distribution of the maximum score estimator. The theory developed also applies to other estimators within a cube‐root convergence class. For some single‐parameter estimators in this class, the results suggest a simple method for inference based upon the bootstrap.  相似文献   
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99.
Past literature in nonprofit management uses the overhead ratio of nonprofits as a measure of efficiency. Although the overhead ratio might measure top‐heaviness, we argue that it does not measure nonprofit efficiency. To investigate this, we use financial and operational data to rank the efficiency of Habitat for Humanity affiliates with the overhead and administrative ratio, as well as data envelopment analysis (DEA) and stochastic frontier analysis (SFA), two of the most popular efficiency measures. While the DEA and SFA rankings are statistically correlated, overhead ratio rankings are negatively correlated with both SFA and DEA rankings. We argue that nonprofit scholars, managers, and donors should move away from concepts and measures of efficiency based on financial ratios, and toward ones that embrace maximizing what nonprofits are able to make and do.  相似文献   
100.
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