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121.
At autopsy, visualization of lesions of the bridging veins, a frequent source of subdural bleeding, is difficult due to their anatomical localization. On the other hand their demonstration is of great importance for the assignment to a chronologically defined trauma. For this reason a postmortem method using computed tomography was developed to visualize the intracranial venous system by means of X-ray contrast media. In subdural bleedings, in which the skull had not been opened up, ruptured vessels could be accurately localized with this method, so that targeted dissection was possible during the subsequent autopsy. 相似文献
122.
The interrelationship of family and peer experiences in predicting adolescent problem behaviors was examined in an 18-year longitudinal sample of adolescents (N = 198) from conventional and nonconventional families. Positive associations among early childhood predictors and adolescent problem behaviors were consistent with problem behavior theory. The most powerful predictors of teen drug use and delinquent behaviors were similar behaviors by peers. Peer behaviors, however, were in turn predicted by earlier family-related variables and the quality of peer relationships in childhood. This study provides supporting evidence that strong peer effects in adolescence reflect even earlier processes in childhood and highlight the importance of linkages from early childhood experiences in family and peer contexts to the development of problem behaviors in adolescence. Implications for prevention and intervention programs are discussed. 相似文献
123.
This article considers a rent-seeking model with N asymmetriccontestants. Each contestant may have a different valuation ofthe rent or a different relative ability to win the rent. Oneof the N contestants is selected as the winner based onTullock's probabilistic contest rule with constant returns toscale. A pure strategy Nash equilibrium solution is obtainedand its consequences are investigated. 相似文献
124.
Black penetration of the municipal workforces of six southerncitiesAtlanta, Augusta, Birmingham, Columbia, Macon,and Savannahis examined for the purpose of highlightingthe factors either favoring or impeding integration. Also examinedis the relative importance of local and federal actors in changingonce segregated hiring patterns. Information was obtained througha series of interviews in each city with relevant participants.Results show that local factors are generally predominant ininfluencing black hiring (e.g., a black mayor, a white mayordependent on black electoral support, a permeable personnelstructure). However, federal intervention in individual discriminationsuits has had a strong effect in certain cities, particularlywhere suits resulted in consent decrees setting targets forminority hires. 相似文献
125.
Symmetric two-stage contests with budget constraints 总被引:1,自引:0,他引:1
The impact of a budget constraint on individual expenditures is examined in two models of two-stage contests with homogenous and risk-neutral players competing to win a single, indivisible, commonly valued rent. The set of players is partitioned into equally sized groups. In the first model, one contestant from each group survives to compete on the second stage against the other survivors. In the second model, one group survives the first stage and its members compete against each other on the second stage. We derive and discuss the symmetric subgame perfect equilibrium solution for each model. 相似文献
126.
Hannah M. Clark Andrew Grogan-Kaylor Maria M. Galano Sara F. Stein Nora Montalvo-Liendo Sandra Graham-Bermann 《Journal of family violence》2018,33(4):257-268
Although intimate partner violence (IPV) is a particularly prevalent public health concern among Latina populations, the evidence-based treatment options for Latinas who experience IPV are limited. The present study tested the efficacy of the Moms’ Empowerment Program (MEP), an intervention for Spanish-speaking Latina mothers who had recently experienced IPV. Participants (N?=?95) were assigned to a Treatment (n?=?55) or a waitlist Control (n?=?40) condition, and those in the Treatment group completed a 10-week intervention designed to address the problems associated with IPV. Intent-to-treat analyses using multiple regression revealed that Latinas’ participation in the MEP was associated with reductions in IPV exposure. These findings provide preliminary evidence that the MEP may reduce exposure to physical violence among Spanish-speaking Latinas. 相似文献
127.
128.
Amanda Moskowitz Judith A. Stein Marguerita Lightfoot 《Journal of youth and adolescence》2013,42(7):1015-1027
Runaway and homeless youth often have a constellation of background behavioral, emotional, and familial problems that contribute to stress and maladaptive behaviors, which, in turn, can lead to self-harming and suicidal behaviors. The current study examined the roles of stress and maladaptive behaviors as mediators between demographic and psychosocial background characteristics and self-injurious outcomes through the lens of the stress process paradigm. The model was tested in a sample of runaway and homeless youth from Los Angeles County (N = 474, age 12–24, 41 % female, 17 % White, 32.5 % African American, 21.5 % Hispanic/Latino). Background variables (gender, age, sexual minority status, parental drug use history, and emotional distress) predicted hypothesized mediators of maladaptive behaviors and recent stress. In turn, it was hypothesized that the mediators would predict self-harming behaviors and suicide attempts in the last 3 months. Females and LGBT (lesbian, gay, bisexual, transgender) youth were more likely to have self-harmed and attempted suicide; younger participants reported more self-harming. The mediating constructs were associated more highly with self-harming than suicide attempts bivariately, although differences were modest. Maladaptive behaviors and recent stress were significant predictors of self-harm, whereas only recent stress was a significant predictor of suicide attempts. All background factors were significant predictors of recent stress. Older age, a history of parental drug use, and greater emotional distress predicted problem drug use. Males, younger participants, and participants with emotional distress reported more delinquent behaviors. Significant indirect effects on self-harming behaviors were mediated through stress and maladaptive behaviors. The hypothesized paradigm was useful in explaining the associations among background factors and self-injurious outcomes and the influence of mediating factors on these associations. 相似文献
129.
Ewan Stein 《British Journal of Middle Eastern Studies》2014,41(1):1-7
This article introduces the special issue on Intellectual dynamics in the modern Middle East. It discusses key themes of the contributions, including intellectuals as social and political actors, intellectuals, power and the state, and history, tradition and regional temporality. 相似文献
130.
Research on the academic adjustment of immigrant adolescents has been predominately conducted in large cities among established
migration areas. To broaden the field’s restricted focus, data from 172 (58% female) Asian American adolescents who reside
within a non-traditional or emerging immigrant community in the Southeastern US were used to examine gender differences in
academic adjustment as well as school, family, and cultural variables as potential mediators of gender differences found.
Results suggest that girls report significantly higher educational goals, intrinsic academic motivation, and utility value
of school compared to boys. These gender differences are statistically mediated by ethnic exploration and family processes,
most prominently, family respect. School connectedness and perceived discrimination are also associated with academic adjustment
at the bivariate level, suggesting that academic success may be best promoted if multiple domains of influence can be targeted. 相似文献