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排序方式: 共有170条查询结果,搜索用时 15 毫秒
1.
Luis F. B. Plascencia Gary P. Freeman Mark Setzler 《The International migration review》2003,37(1):5-23
State governments exercise significant powers to regulate the economic and social activities of resident aliens. We review the laws of the six leading states of immigrant settlement regulating access of noncitizens to 23 occupations, updating existing studies from 1946–77. Citizenship requirements for these occupations have plummeted, a change we attribute to federal court decisions, advisory opinions of state attorneys general, and state legislative and administrative action. There are numerous additional citizenship requirements in the statutes of the six states, although these appear to be poorly enforced. The authority of states to regulate their political communities is the most important remaining constitutionally valid basis of citizenship requirements. States define their political community broadly, leading to questionable exclusions of noncitizens from important activities. 相似文献
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Public policy decisions in health are increasingly difficult and expensive. Although there will never be enough information available, private foundations can help to bridge the most important gaps in knowledge. Larger foundations may also wish to respond to those who doubt the value of foundation activities. This article reviews the experiences over the past eight years of The Robert Wood Johnson Foundation in employing evaluation and related social research procedures in the planning and implementation of a major philanthropic effort to improve the health and medical care of Americans. Discussed are the still evolving Foundation evaluation framework, the unanticipated problems in undertaking specific evaluations, and the substantive findings of some of the studies. 相似文献
4.
Factors influencing Soay sheep survival 总被引:4,自引:0,他引:4
E. A. Catchpole B. J. T. Morgan T. N. Coulson S. N. Freeman & S. D. Albon 《Journal of the Royal Statistical Society. Series C, Applied statistics》2000,49(4):453-472
We present a survival analysis of Soay sheep mark recapture and recovery data. Unlike previous conditional analyses, it is not necessary to assume equality of recovery and recapture probabilities; instead these are estimated by maximum likelihood. Male and female sheep are treated separately, with the higher numbers and survival probabilities of the females resulting in a more complex model than that used for the males. In both cases, however, age and time aspects need to be included and there is a strong indication of a reduction in survival for sheep aged 7 years or more. Time variation in survival is related to the size of the population and selected weather variables, by using logistic regression. The size of the population significantly affects the survival probabilities of male and female lambs, and of female sheep aged 7 or more years. March rainfall and a measure of the North Atlantic oscillation are found to influence survival significantly for all age groups considered, for both males and females. Either of these weather variables can be used in a model. Several phenotypic and genotypic individual covariates are also fitted. The only covariate which is found to influence survival significantly is the type of horn of first-year female sheep. There is a substantial variation in the recovery probabilities over time, reflecting in part the increased effort when a population crash was expected. The goodness of fit of the model is checked by using graphical procedures. 相似文献
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Increasing family diversity during the past half century has focused national attention on how children are faring in nontraditional family structures. Much of the limited evidence on children in same‐sex couple families suffers from several shortcomings, including a lack of representative data. We use the National Health Interview Survey (2004–2012) and the National Survey of Children's Health (2011–2012) to identify children in different‐sex married and cohabiting families, never and previously married single‐parent families, and same‐sex couple families. Considering important characteristics such as the child's race or ethnicity and adoption status, household socioeconomic standing, family stability, and parent health, we examine the relationship between family type and parent‐rated overall child health. The results suggest that poorer health among children in same‐sex couple as well as different‐sex cohabiting couple and single‐parent families appears to be largely the product of demographic and socioeconomic differences rather than exposure to nontraditional family forms. 相似文献
6.
Adolescents Conceived through Donor Insemination in Mother‐Headed Families: A Qualitative Study of Motivations and Experiences of Contacting and Meeting Same‐donor Offspring
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Sherina Persaud Tabitha Freeman Vasanti Jadva Jenna Slutsky Wendy Kramer Miriam Steele Howard Steele Susan Golombok 《Children & Society》2017,31(1):13-22
This study interviewed adolescents conceived using sperm donation to examine their experiences of contacting and meeting ‘same‐donor offspring’ (i.e. donor‐conceived offspring raised in different families who share the same donor), their motivations for this contact, and how they make meaning of these relationships. This in‐depth qualitative study involved semi‐structured interviews with 23 young people aged 12–19 years (mean = 14 years). Interviewees were motivated by curiosity about their biological relations and by wanting to extend their family. Contact with same‐donor offspring was described as being either normal/neutral or as a unique experience that was integrated into their identity. This study highlights the importance of contact between same donor offspring, particularly during adolescence, a developmental stage associated with identity formation. The findings have important policy implications as they suggest that donor‐conceived individuals may benefit from contact with others conceived using the same donor prior to the age of 18 years. 相似文献
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Using an interview survey of manufacturing establishments that provide 10 years of retrospective data on labor practices, we investigate factors associated with the adoption and termination of employee involvement programs and the relation between these and other human resource policies. In the period studied, more firms introduced than terminated such programs but a sufficiently large number chose to eliminate such programs to indicate that employee involvement does not fit in all business settings. Our results show that business strategy and the use of other complementary human resource policies affect the dynamics of employee involvement use in US manufacturing establishments. 相似文献
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G. H. Freeman S. D. Jacka J. E. H. Shaw J. Q. Smith 《Journal of applied statistics》1996,23(2):273-284
Central to the activities of any industry is the modernization of its assets. This paper describes the application of statistical methods to the asset management plan of a large water company. A model for the underground assets is given in detail, and the extensive computations required are illustrated. A Bayesian model shows the consequences of various policy options and provides realistic measures of the uncertainty connected with them. 相似文献
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Beverly J. Geckle Contributor Christine Freeman Contributor Sue Anderson Contributor Carrie S. Eastman Contributor Susan Davis Column Editor 《Serials Review》2005,31(4):309-311
Reports on the 2005 North Carolina Serials Conference, the twentieth anniversary conference of the North American Serials Interest Group, the 2005 Acquisitions Institute at Timberline Lodge, and a program on electronic archiving sponsored by the New England Chapter of the Association of College and Research Libraries. 相似文献