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291.
292.
Based on previous empirical findings, “challenge stressors” (Cavanaugh, Boswell, Roehling, & Bouderau, 2000 Cavanaugh, M. A., Boswell, W. R., Roehling, M. V., & Boudreau, J. W. (2000). An empirical examination of self-reported work stress among U.S. managers. Journal of Applied Psychology, 85, 6574. doi:10.1037/0021-9010.85.1.65[Crossref], [PubMed], [Web of Science ®] [Google Scholar]; Lepine, Podsakoff, & Lepine, 2005 LePine, J. A., Podsakoff, N. P., & LePine, M. A. (2005). A meta-analytic test of the challenge stressor hindrance stressor framework: An explanation for inconsistent relationships among stressors and performance. Academy of Management Journal, 48, 764775. doi: 10.5465/AMJ.2005.18803921[Crossref], [Web of Science ®] [Google Scholar]), such as the amount and scope of responsibility, can be loosely considered as “good stressors” that are consistently and positively related to job satisfaction and performance. We introduce the role of appraisal to further examine how challenge stressors are connected to performance. Structural equation modelling analyses using an applied sample of 284 employee–supervisor dyads showed that affective commitment to the organization mediated the relationship between both opportunity and threat appraisal and performance (in-role and extra-role). The mediating role of increased psychosomatic distress was supported only for the relationship between threat appraisal and in-role performance. The findings indicate the importance of taking into account the actual appraisal of “challenge stressors”, as it carries implications for performance, and reveals the key role of affective commitment and induced distress mechanisms in this relationship. In conclusion, “challenge stressors” are not always positively related to performance, but only when they are perceived as opportunities.  相似文献   
293.
It is unclear whether higher rates of sexual partner concurrency in Black South Africans are due to socioeconomic or cultural factors. We used a nationally representative sample of 9,728 individuals aged 16 to 55 from a study conducted in 2009 to examine how the norms pertaining to concurrency and the practice of concurrency vary by race, class, and gender. The percentage of men reporting point concurrency was 14%, 6.5%, and 2.5% in Blacks, coloreds, and Whites, respectively (p < 0.001). These percentages increased to 45.7%, 24.7%, and 11.7%, respectively, for those reporting lifetime concurrency (p < 0.001). In all the racial groups, men exhibited more favorable attitudes toward concurrency than women did. For a range of indicators, White men and women had less favorable attitudes toward concurrency than Black men and women. These differences remained after controlling for a range of confounding variables. In the adjusted logistic regression model, reported concurrency in men was associated with a younger age, Black race, being in the lowest income tertile, not being in a stable relationship, and expressing various positive attitudes toward concurrency.  相似文献   
294.
In this article, I introduce the concept of “mindful ethics” to describe my experiences as a feminist qualitative researcher who has confronted ethical dilemmas in my sexuality research. Mindful ethics is informed theoretically by mindful inquiry, grounded theory, ethics in practice, and ethically important moments. Mindful ethics has been useful in dealing with ethical considerations throughout all stages of my sexuality research. Shifting my attention to the takenfor-granted social contexts and circumstances surrounding informants’ life experiences has helped me deal with ethical concerns that otherwise may have resulted in harm to informants.  相似文献   
295.
The article investigates issues surrounding same-sex relationships in an African context. Many countries on the continent outlaw such partnerships, creating complex dimensions for people trapped in a no-man's land of socially unacceptable reality. Furthermore, criminalization of same-sex practices results in a lack of targeted health and welfare programs, creating a dangerous lacuna in service delivery. To address this, academic programs, field supervisors, and practitioners, particularly in the field of social work, must be sensitive to the needs of sexual minorities, and those behind whose acceptability they are forced to hide, especially in an alien environment.  相似文献   
296.
Abstract

This study evaluates the influence of the format, arrangement and availability of Electronic Gaming Machines Outside Casinos (EGMOC) on gambling behaviour and perceptions. Two studies comprising occasional, at-risk and probable pathological gamblers were conducted. The first study used focus groups, while the second was conducted in a laboratory setting reproducing a bar. The results of the former study indicate that while format does not influence gambling behaviours, the arrangement of EGMOC in a gambling setting is a critical factor: in general, gamblers perceive isolated areas in a gambling venue as a factor contributing to impaired control. However, behavioural results obtained in the laboratory setting do not corroborate subjective data. Finally, gamblers suggested almost unanimously that the availability of EGMOC should be limited to a small number of sites. The results are discussed in the perspective of responsible gambling policies.  相似文献   
297.
The article explores the way that social networks and personal experiences affect perceived HIV‐related concerns among people aged 50 years or older living in a low resource neighborhood with high HIV prevalence in Nairobi, Kenya. Multiple logistic regression is used to model the association between the reporting of an HIV‐related concern and individual‐level characteristics, personal experiences, and social interaction. The main concerns regarding HIV reported by older people in the study included caring for orphaned children (65%), caring for people with AIDS (48%), and losing material and social support from adult children (36%). Interestingly, 38% of respondents voiced concerns about HIV infection among older people. Respondents who had been individually affected by HIV and AIDS, who were part of a wide social network, or who participated in community activities were frequently more likely to report a concern. The findings highlight the significance of the role of social interaction and social networks in the diffusion of information and knowledge. These findings have implications for HIV and AIDS policy and programs, highlighting the potential for social networks and community‐level interventions to educate and increase awareness about HIV and AIDS among older people. Community leaders can make good peer educators and communication agents for HIV/AIDS campaigns. Additionally, the recognized high level of personal vulnerability to HIV infection among older people suggests the need for targeted sexual behavior change programs among this often neglected group.  相似文献   
298.
299.
The well‐known Oeppen–Vaupel straight line of maximum female life expectancies showed that the highest life expectancy observed in a given year increased linearly from 1840 to 2000. Their analysis fueled major controversy, especially when used to extrapolate future improvements in life expectancy at the same pace. We improve on the empirical analysis by enriching the dataset, expanding the period to 1750–2005, and considering both maximum life expectancy at birth and lowest age‐specific survival rates. It clearly appears that the original Oeppen–Vaupel straight line must be divided into several segments characterized by different slopes and that each segment corresponds to a major advance in the health transition. There is room to push life expectancy higher, but unless some new breakthrough increases the human life span, progress will very likely decelerate as mortality reduction affects individuals at older and older ages. The main key to the future lies not in knowing whether the observed straight line can be extrapolated but in anticipating the next major health improvement that will lead to an additional increase in life expectancy.  相似文献   
300.
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