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151.
Charles W. Warren Charles F. Westoff Joan M. Herold Roger W. Rochat Jack C. Smith 《Demography》1986,23(3):351-365
For twenty years Puerto Rico has had the world’s highest prevalence of sterilization. From the 1982 Puerto Rico Fertility and Family Planning Assessment we examine whether the probability of obtaining sterilization is changing and what impact sterilization has on fertility, finding that the use of contraceptive sterilization has not declined and will probably continue to increase in Puerto Rico. Nonuse rather than temporary methods of contraception is the second most likely circumstance after sterilization. We also find that sterilization has reduced the total marital fertility rate by over 33 percent, thus having a significant effect on reducing the rate of natural increase; by all indications, it will have a greater effect in the future. 相似文献
152.
Roger A. Wojtkiewicz 《Demography》1993,30(4):701-717
As more and more children experience nonintact families because of nonmarital birth or parental marital disruption, researchers have paid more attention to whether nonintact family experiences have negative effects on later life. This study uses data from the National Longitudinal Survey of Youth to consider how experiences of parental structure affect chances of high school graduation. The study shows that the negative effects of parental structure are simpler than theoretical notions might suggest. 相似文献
153.
Roger B. Trent 《Population and environment》1980,3(3-4):309-327
George Gallup polled "ideal family size" in 1936 and introduced a concept which subsequently appeared in many polls and fertility surveys. Previous research shows that ideal is a poor measure of respondent's personal fertility plans or behavior and that among researchers there is little agreement about what ideal family size does measure, if anything. Construct validity analysis based on historical, trend, and cross-sectional data suggests that the late 1960s saw ideal politicized as preoccupation with the "population problem" grew. Ideal family size is now appropriately regarded as a measure of a societal pronatalist norm and not merely a projected fertility preference.A version of this paper was presented at the meetings of the Society for Applied Anthropology, Merida, Mexico, 5 April 1978. Data on ideal family size from Blake (1974) are used with permission of the editors ofDemography. Other data come from the 1965 and 1970 National Fertility Studies co-directed by N.B. Ryder and C.F. Westoff (under contract No. PH-43-65-1048 with the National Institute of Child Health and Human Development). 相似文献
154.
Dillon F De La Rosa M Rojas P Schwartz SJ Duan R 《Journal of social work practice in the addictions》2011,11(3):209-229
This cross-sectional, secondary analysis study utilizes data from a prior study of intergenerational substance use among Latina women (n = 316). We explored the influence of substance use frequency and type, as well as cultural and socioeconomic factors on attributions about addiction among a predominantly immigrant sample of Latina women. Women who were less proficient in English (an indicator of adoption of the receiving culture in the acculturation process) and more proficient in Spanish (an indicator of heritage-culture retention) endorsed more spiritual model attributions than women who were more proficient in English and less proficient in Spanish. Women were more proficient in Spanish more frequently endorsed the disease attribution model. Alcohol, marijuana use and non-medical sedative use were linked with spiritual, moral /character and disease attribution models respectively. Participants reporting higher education levels indicated less agreement with the moral/character model of addiction. Implications for culturally tailored social work interventions for Latina women are discussed. 相似文献
155.
The term ‘end-to-end’ process management is now commonplace in the language and practice of operations. Managers are encouraged to migrate from functional process management to end-to-end process management to realise a range of performance improvements. However, these improvements are often elusive; the specific challenges associated with such a migration are under-researched. This paper uses a cross-sector study to identify the challenges of end-to-end process management and to generate practical managerial guidance. Three areas are identified that demand particular managerial attention: the need to move beyond process mapping, the role of IT in process management and maintaining the process infrastructure as a strategic asset. More significantly, the findings highlight the need for greater conceptual clarity regarding the end-to-end concept itself. The existing literature suggests that scope is the primary differentiator of the end-to-end process – the requirement to manage an extended boundary from customer order through to customer fulfilment. However, this research suggests that the end-to-end concept is more complex, comprising of three core constructs with seven dimensions: scope (boundary conditions, sequence/flow and controls); scale (resources and input/output transformation) and complexity (interrelationships and orientation). End-to-end process management involves much more than an extended boundary. It requires a systemic perspective and clarity regarding controls and transforming resources. 相似文献
156.
Nina Rosa do Amaral Costa Maria Clotilde Rossetti-Ferreira†‡ 《Child & Family Social Work》2009,14(1):58-67
Adoption in Brazil has long been related to practices of not disclosing the child's history and origins, which become a family secret. As a consequence, most couples who apply for adoption prefer newborns. Late adoption is still an uncommon practice and requires a 'family project' which accepts a different family model, new meanings of motherhood and fatherhood, and different ways of building affectionate bonds. It is important to investigate how a man and a woman become parents under those circumstances. This study aimed to follow up the emergence of adoption, motherhood and fatherhood meanings, in the discursive practices involved in the construction of adoptive parenthood in the Brazilian setting. This paper presents important meanings regarding parenthood produced by a couple who adopted two sisters, aged 4 and 5 years. Analysis revealed that to better understand the late adoption process, the meanings that emerge in the discursive practices should be considered. Those meanings pervade and circumscribe the family relationships, influencing how the individuals constitute their roles in the family. It is through the analysis of this dialogical process of construction that it is possible to identify the challenges in late adoption and to unravel the process of constructing affectionate relationships. 相似文献
157.
Juan Feng Zuo‐Jun Max Shen Roger Lezhou Zhan 《Production and Operations Management》2007,16(4):510-522
We study auctions for a set of commonly‐ranked items where each buyer has unit demand. This setting has promising applications in areas such as keyword auctions in the search engine advertising industry, the sale of quality‐ranked raw materials, etc. An auction mechanism suitable for this setting is the simultaneous pooled auction (SPA), where each bidder simultaneously submits a single bid and is allocated an object based on the rank of his bid among all the bids. We study how to improve the seller's expected revenue by enforcing a reserve price in an SPA. We find that the use of an appropriate reserve price may significantly increase the seller's revenue, especially when the number of items for sale is relatively large compared to the number of participating bidders. One inherent problem in the SPA is that some bidders may incur ex post losses; that is, they pay more than what they value the received objects. We propose a tailored VCG mechanism that generates the same expected revenue as the SPA does, while bidders do not incur any ex post loss. We also discuss the potential applications of this research to keyword auctions. 相似文献
158.
It has long been known that for many joint distributions exhibiting weak dependence, the sample value of Spearman's rho is about 50% larger than the sample value of Kendall's tau. We explain this behavior by showing that for the population analogs of these statistics, the ratio of rho to tau approaches 3/2 as the joint distribution approaches that of two independent random variables. We also find sufficient conditions for determining the direction of the inequality between three times tau and twice rho when the underlying joint distribution is absolutely continuous. 相似文献
159.
Scott E. Rutledge Roger A. Roffman Christine Mahoney Joseph F. Picciano James P. Berghuis Seth C. Kalichman 《Clinical Social Work Journal》2001,29(3):291-306
Motivational enhancement therapy (MET) interventions are being increasingly added to the menu of behavioral interventions for HIV prevention. They present few logistical and psychological barriers for at-risk persons who are ambivalent about transmission risk reduction and appear to offer promise of being transferable to community based organizations and public health programs. We describe the principles of motivational interviewing, a counseling style often used in conjunction with MET, and demonstrate and discuss its application with case examples drawn from a recent pilot trial of a telephone-delivered brief motivational enhancement for HIV risk reduction with men who have sex with men (MSM). 相似文献
160.