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Having a connection to one’s ethnic heritage is considered a protective factor in the face of discrimination; however, it is unclear whether the protective effects are persistent across multiple stressors. Furthermore, the dimensions of ethnic identity that reflect group pride/connection (affirmation) and exploration of the meaning of group membership (achievement) may operate differently in the face of stress. The present study examined the moderating role of ethnic identity affirmation and achievement on concurrent and longitudinal relationships between exposure to stress (discrimination, family hardship, exposure to violence) and antisocial behavior in a sample of 256 Black and Latino male youth (70 % Black) living in low-income urban neighborhoods. Using regression analysis, concurrent associations were examined at age 18, and longitudinal associations were tested 18 months later. We found that, among youth experiencing discrimination, high levels of achievement and low levels of affirmation predicted greater aggressive behavior and delinquency. Low affirmation also predicted more criminal offending in the face of discrimination. The two dimensions operated similarly in the context of family stress, in which case high levels of affirmation and achievement predicted lower levels of antisocial behavior. The findings suggest a differential role of the two dimensions of ethnic identity with respect to discrimination; furthermore, the coping skills that may be promoted as youth make meaning of their ethnic group membership may serve as cultural assets in the face of family stress.  相似文献   
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Previous research on the association between violence and biological stress regulation has been largely cross-sectional, and has also focused on childhood. Using longitudinal data from a low-income, high-risk, predominantly African-American sample (n = 266; 57 % female), we tested hypotheses about the influence of cumulative exposure to violence during adolescence and early adulthood on cortisol responses in early adulthood. We found that cumulative exposure to violence predicted an attenuated cortisol response. Further, we tested whether sex, mothers’ support, or fathers’ support moderated the effect of exposure to violence on cortisol responses. We found that the effect of cumulative exposure to violence on cortisol was modified by sex; specifically, males exposed to violence exhibited a more attenuated response pattern. In addition, the effect of cumulative exposure to violence on cortisol was moderated by the presence of fathers’ support during adolescence. The findings contribute to a better understanding of how cumulative exposure to violence influences biological outcomes, emphasizing the need to understand sex and parental support as moderators of risk.  相似文献   
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The characterization of inter-species variation in bone mineral (b-HAP) is of relevance to forensic science and archaeology, but has not previously been widely explored. Results of an investigation into unheated bone mineral and behavior of bone upon heating for 12 animal species (including human) demonstrate that b-HAP characteristics, quantitatively measured using X-ray diffraction (XRD) analysis, exhibit significant inter-species variation. Human bone was found to be significantly different to all other species in terms of b-HAP lattice parameter values from unheated and heated bone and in terms of recrystallization behavior of b-HAP upon heating bone to 600°C. The amounts of b-HAP thermal decomposition products were also significantly different for human bone heated to 1400°C compared to those obtained for most other species. Therefore, there is potential for the development of an XRD-based method of species identification, particularly one that distinguishes human from non-human bone.  相似文献   
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In the analyzed period from 1998 to 2008, the autopsies performed at the Hamburg Institute of Legal Medicine included 13 cases in which an investigation for neonaticide had been initiated by the public prosecutor. The killed neonates showed a nearly equal distribution between both sexes. The most common method of neonaticide was suffocation. Most of the perpetrators were young, unmarried primipara with an average educational background. Almost all of them were suffering under psychological stress and had negated their pregnancy. In most cases, birth and neonaticide happened alone in their flat, and there was no medical attendance in any case. In the cases brought to court the women were charged with manslaughter (Section 212 German Criminal Code) and those found guilty were always granted a mitigated sentence pursuant to Section 213 Criminal Code.  相似文献   
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There exists a lot of research on the reservation wages of the unemployed as a determinant of unemployment duration. Little is known about the reservation wages of those who are not in the labor force but might be potential labor force returnees, such as Social Security Disability Insurance (DI) beneficiaries. The main objective of this article is to assess what can be learned from the subjective reservation wages of DI beneficiaries. Using the New Beneficiary Data System (NBDS), the article assesses the magnitudes of reservation wages compared to the last wage earned and the benefit amount, as well as the determinants of reservation wages in a regression framework. The NBDS is unique in that it provides the reservation wages and the work history of DI beneficiaries before and after joining the DI rolls. The article has several noteworthy results and policy implications: *Data show that a significant portion of beneficiaries report being likely to accept a job if offered one. Based on the NBDS, 13 percent of DI beneficiaries who did not work since joining the rolls in 1981-1982 reported in 1991 that they would be willing to work if offered a job and provided their reservation wages. *DI beneficiaries do not appear to price themselves out of the labor market. Half of them would want a wage that is 80 percent or less of the last wage earned before receiving DI. It is estimated that approximately 7 percent of long-term DI beneficiaries may potentially return-to-work if they search for jobs and have a wage offer distribution with a mean at 80 percent of their last wage. *The nonlabor income in addition to the benefit is positively and significantly associated with the reservation wage, while the benefit amount per se is not. However, this result needs to be treated with caution given that nonlabor income is endogenous to the model. *Heterogeneity exists between persons still under the DI program and those that have moved to the Old-Age program. The subsamples of persons who have shifted to the Old-Age program and those who are still under the DI program have median reservation wage to the last wage ratios of 0.69 and 0.93, respectively. A significantly lower reservation wage for persons who have moved to the Old-Age program was also found in a regression framework. This heterogeneity between the two groups may result in part from the different program characteristics both groups face, for instance, in terms of benefit termination and Medicare eligibility rules. *Subjective reservation wage data can be useful to study populations that are out of the labor force. This article is innovative in that it focuses on a group of persons who are typically considered as being out of the labor force, and therefore are not asked reservation wages in general household surveys such as the Current Population Survey. It would be of great interest to collect more reservation wage data for DI beneficiaries in a longitudinal data set to expand this analysis, for instance, to assess conclusively the effects of changing program characteristics on reservation wages and return-to-work outcomes as beneficiaries transition to the Old-Age program or as new return-to-work programs are put in place.  相似文献   
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Self-regulation has found its adepts very early, but more academics are beginning to question its appropriateness and calling for a “hybrid regulation” as cyberspace becomes more and more an essential means of communication in everyday life. Yet, today the private sector has never been so strong within cyberspace and the chances to see the flowering of what U.S. lawyers know as public forums keep on diminishing. The success of filtering measures, the implementation is which is most of the time opaque, confirms this trend. More generally, the desire to see private powers confined in the digital environment is far from being granted. This is certainly due in part to the relative obsolescence of legal concepts that are inapt to frame the behavior of intermediaries, which do play the role of regulators. This paper thus seeks to determine and analyse the legal framework within which intermediaries act in cyberspace.  相似文献   
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Assess the impact of a 100-per cent increase of fines on compliance with speed-limits (50 km/h) and parking regulations in urban areas. Norm violations were measured through standardized observations in all five major cities in Switzerland before and after fines had been raised by 100 % or more at two pre- and two post-intervention periods. The speed of 20,000 cars was measured, and 10,000 parked cars were controlled. Levels of police controls remained stable over the entire period, but enforcement activity varied considerably across cities. Violations of parking regulations decreased by 32 %. Speed-limit violations remained unaffected in the longer run by higher fines. When cities without relevant enforcement activity were excluded, a reduction by 17 % was observed. No causal inferences can be drawn given the absence of a control area. However, the data suggest that higher fines deter traffic violations, provided enforcement activity remains at relevant levels.  相似文献   
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