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1.
Measures of Multigroup Segregation 总被引:3,自引:0,他引:3
In this paper we derive and evaluate measures of multigroup segregation. After describing four ways to conceptualize the measurement of multigroup segregation—as the disproportionality in group (e.g., race) proportions across organizational units (e.g., schools or census tracts), as the strength of association between nominal variables indexing group and organizational unit membership, as the ratio of between–unit diversity to total diversity, and as the weighted average of two–group segregation indices—we derive six multigroup segregation indices: a dissimilarity index (D), a Gini index (G), an information theory index (H), a squared coefficient of variation index (C), a relative diversity index (R), and a normalized exposure index (P). We evaluate these six indices against a set of seven desirable properties of segregation indices. We conclude that the information theory index H is the most conceptually and mathematically satisfactory index, since it alone obeys the principle of transfers in the multigroup case. Moreover, H is the only multigroup index that can be decomposed into a sum of between– and within–group components. 相似文献
2.
Joe Caldwell 《Disability & Society》2007,22(6):549-562
The current study explores the experiences of families with relatives with intellectual and developmental disabilities participating in a consumer-directed support program in the USA. The Illinois Home Based Support Services Program provides a limited budget to purchase and manage services. However, within recent years the program has faced cuts and changes. This context provided a rich environment to explore the benefits of the program, as well as oppressive forces creating barriers to the control of financial resources by individuals with disabilities and their families. Financial benefits, benefits from respite and personal assistance services and prevention of undesirable institutional placements were major themes that emerged and triangulated with previous research. The following themes emerged concerning barriers to the control of financial resources: provider and professional control, disability as a deserving group, fraud and abuse perceptions and familism. These themes appear to fit well within a social model of disability applied to the family. 相似文献
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Minorities and females are underrepresented in the top-income quintile of law school graduates. Employing a binary logistic
regression model, I examine whether this is due to a“glass ceiling” (an invisible barrier erected by third parties) or a“sticky
floor” (self-imposed limitations regarding employment). My major finding is that being female, a minority, or disabled did
not significantly reduce one's probability of making the top-income quintile once hours of work, experience, and other factors
are taken into account. My findings directly contradict the large body of glass-ceiling literature and support the sticky-floor
model.
I thank the Law School Admission Council for funding this research. Helpful comments and suggestions were received from Robert
Nelson of Northwestern University and the American Bar Foundation, Steven Conroy of the University of West Florida, and R.
Kim Craft and Douglas Bonzo of Southern Utah University. The views expressed here are solely those of the author and do not
necessarily reflect those of the institutions or persons listed above. 相似文献
6.
This study examines how two aspects of formalization of grievance procedures affect grievance procedure effectiveness: written
versus oral presentation of grievance and the level of union and management authorized to resolve grievances at the first
step. Several demographic variables were controlled for: size of bargaining unit, percentage of organization represented,
number of grievances filed, and industry. A sample of 46 firms, representing a broad cross-section of unionized companies
in the private sector, was obtained with the help of the American Arbitration Association. Results indicate that more formal
grievance procedures (e.g., written presentation) are positively related to resolution rates at the first step. The number
of grievances field and the size of the bargaining unit were positively related to total resolution rates prior to arbitration.
We thank the American Arbitration Association for making this study possible. 相似文献
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Emily S. Minor Christopher W. Appelt Sean Grabiner Lorrie Ward Alexandra Moreno Stephen Pruett-Jones 《Urban Ecosystems》2012,15(4):979-991
Monk parakeets (Myiopsitta monachus) are the most abundant and widely distributed of the naturalized parrots in the United States. Their presence is simultaneously encouraged by some humans (through use of bird feeders) and discouraged by others (through removal of their nests) and, as a result, they show an interesting spatial distribution across urban areas. We used an online public survey and field surveys to examine the influence of human activities and land use on the distribution of this exotic species around Chicago, IL (USA). These efforts resulted in detection of 249 nesting structures and approximately 778 birds across the region. A CART analysis successfully separated nesting sites from random sites and correctly classified 90?% of the nesting sites. The most important factor in the model was land use, with nests typically found in areas with less than 84?% residential zoning. We found nests on a wide variety of substrates including trees, cell phone towers, and stadium lights. Spatial point pattern analysis indicated that nests in trees and nests in built substrates were significantly dissociated with each other at all scales. Nests on built substrates were closer to railroads and highways or in areas with lower human population density, suggesting either a difference in substrate availability or human tolerance between these settings. While humans may have a positive effect on distribution of monk parakeets at large spatial scales, at the scale of this study we see a potentially negative effect of too many humans on the distribution of monk parakeet nests. 相似文献
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