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Whether or not mothers, who often struggle with balancing work and parenting responsibilities, perceive that they face career harm in exchange for control over flexible work options at their jobs is an unanswered question. Using 2009 original data from a random‐digit‐dial telephone survey of 441 mothers located across the United States, this study focuses on how control over two latent variables measuring flexibility, flexible work arrangements (such as scheduling and place of work) and time‐off options, influences mothers' career harm perceptions in a total of three work domains: (1) wages/earnings, (2) raises or promotions, and (3) job evaluations. We find perceptions of career harm among only one‐fifth of mothers; in addition, control over time‐off options reduced perceived career damage related to parenting duties. Mothers may have less to fear than previously hypothesized about the potential sacrifices they have to make when they have significant control over certain flexibility options.  相似文献   
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Even the most anti-American cultural statements in today's Russia, from movies to advertisements and rock music, incorporate forms developed in the United States, thus illustrating the continuing importance of North America to Russia's sense of itself.  相似文献   
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Perinatally HIV-infected (PHIV+) youth are surviving into adolescence and young adulthood. Understanding the sexual development of PHIV+ youth is vital to providing them with developmentally appropriate HIV-prevention programs. Using pooled data (N = 417) from two longitudinal studies focused on HIV among youth (51% female; 39% HIV+) and their caregivers (92% female; 46% HIV+), the rate of sexual onset during adolescence across four youth–caregiver combinations was compared: PHIV+ youth with HIV+caregivers (12%), PHIV+ youth with HIV– caregivers (27%), HIV– youth with HIV+caregivers (34%), and HIV– youth with HIV– caregivers (27%). Youth with HIV– caregivers were more likely than other youth–caregiver groups to have had their sexual onset. Youth with HIV+ caregivers reported a slower rate of onset of penetrative sex across the adolescent years. Findings are discussed by highlighting the role that both youth and caregiver HIV status play in the onset of sexual behavior across adolescence.  相似文献   
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Sexual activity is normative in college. Thus, college students who are virgins are a minority; they are also an understudied group. This study extended a prior investigation (Sprecher &; Regan, 1996 Sprecher, S., &; Regan, P. C. (1996). College virgins: How men and women perceive their sexual status. Journal of Sex Research, 33, 315.[Taylor &; Francis Online], [Web of Science ®] [Google Scholar]) that focused on U.S. college virgins' reported reasons for and reactions to virginity. Data were collected from the same university over an additional 18 years and from more than 700 additional virgin students. We found differences between male and female virgins that showed that men are more reluctant virgins. For example, the only reason for being a virgin that male virgins endorsed to a greater degree than did female virgins was “my partner was not willing.” Men also had more negative affective reactions to being a virgin than did women. We also found some variation in reasons for and reactions to virginity based on sociodemographic variables such as religiosity and ethnicity. A temporal analysis revealed that reasons for being a virgin that referred to a fear (e.g., fear of AIDS and other sexually transmitted infections) became less important over the 23-year period. We discuss our findings in the frameworks of evolutionary and social exchange theories.  相似文献   
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Little is known about the relatedness structure of carnivores living in urban areas, where green spaces may vary in size and resource availability. We examined the minimum population size, relatedness structure, and genetic diversity of a recently established population of eastern coyotes (Canis latrans) inhabiting New York City (NYC). The population has been established for approximately 25 years, and sample collection for genetic analysis has been ongoing since 2010. We genotyped 234 scat, eight tissue, and three blood samples at nine microsatellite loci. We identified 45 individual coyotes with a male-biased sex ratio of 2.2:1. We also found moderate to high levels of genetic diversity, with average observed heterozygosity of 0.779 and mean number of alleles per locus of 7.8. Most of the green spaces surveyed supported a single group of closely related coyotes in each. Relatedness comparisons between parks also indicated that coyotes compared across different parks were also closely related. We identified two unrelated mated pairs and found no support for polygamy. The high incidence of relatedness suggests that the coyote population is descended from a small number of founding individuals. Additionally, we genetically recaptured several coyotes, including one individual sampled in the Bronx and in Queens, with a median of 103 days between resampling. This result indicates that the coyotes are persisting in some of the isolated greenspaces of New York City and able to move successfully between them.

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