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Since 1979, the potent narcotic analgesic fentanyl and its analogs have been synthesized in clandestine laboratories and sold as heroin substitutes. At least 112 overdose deaths have been associated with their use. In this study, toxicology data, autopsy findings, and coroners' investigative reports were reviewed in order to construct a profile of the typical fentanyl overdose victim and to identify any factors that might heighten the risk of death from fentanyl use. The "typical" fentanyl overdose victim was 32.5 +/- 6.7 years of age (range, 19 to 57 years), male (78%, compared with 22% female), and Caucasian (50%, compared with 29% Hispanic, 20% Black, and 0.9% Asian). With the exception of his or her age, the typical fentanyl overdose victim is quite similar to the typical heroin user. Nearly all the deaths (94%) occurred in California, yet within the state they were widely distributed throughout 17 counties and 44 cities. Pulmonary edema and congestion and needle puncture sites were consistent postmortem findings. No preexisting medical conditions were identified as possible risk factors. Although most of the fentanyl victims had a prior history of intravenous drug use, morphine or codeine were not commonly found, which suggests that the victims had little or no opiate tolerance. Ethanol was present in 38% of the cases and is thought to be a significant risk factor. Mean fentanyl concentrations in the body fluids were quite low: 3.0 +/- 3.1 ng/mL (0.3 +/- 0.31 micrograms/dL) in blood and 3.9 +/- 4.3 ng/mL (0.39 +/- 0.43 micrograms/dL) in urine, measured by radioimmunoassay. Although the potency of the analogs and the purity of street samples varies considerably, it is probably the general availability of the drug rather than the potency of a particular analog that determines the incidence of overdose deaths.  相似文献   
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Journal of Youth and Adolescence - In bullying situations, adolescent bystanders may help bullied others, just stand by, or join in the antisocial behavior. Current studies have yet to fully...  相似文献   
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Perceptions of racial discrimination constitute significant risks to the psychological adjustment of minority youth. The present study examined the relationship between perceived racial discrimination and peer nominations of victimization among 173 (55 % female) African American, European American and Latino youth. All respondents completed peer nominations of victimization status whereas the African American and Latino youth completed subjective measures of racial discrimination. The results indicated that African American and Latino’s subjective perceptions of racial discrimination were linked to nominations of overt and relational victimization when rated by their European American peers. The results suggest that there is consistency between African American and Latino youth’s perceptions of racial discrimination and nominations of peer victimization by their European American peers.  相似文献   
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The purpose of this study was to investigate the trajectories of behavioral problems for a sample of predominately minority adolescents (n = 212, 91% African-American and/or Hispanic, 45% boys, 55% girls) in a large, urban school district and to determine the impact of parental and peer relationships, gender, and risk status on their development during middle and high school. Multi-level growth modeling was the primary statistical procedure used to track internalizing and externalizing behavioral problems across time. Results indicated that behavioral problems as rated by students’ teachers declined significantly for both boys and girls, a finding that is in direct contrast to previous studies of adolescent behavior. The quality of parental relationships was a strong predictor of both types of behavior whereas the quality of peer relationships predicted only internalizing behavioral symptoms. These findings suggest that behavioral trajectories may be somewhat unique for this population underscoring the need for additional research in this area. The findings also have implications for intervening with children and youth who display behavioral problems during critical developmental periods.  相似文献   
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Multi-group confirmatory factor analysis and multi-group structural equation modeling were used to test correlates of overt and relational aggression between young adolescent siblings across four groups (i.e., male/male, male/female, female/male, and female/female sibling pairs), using 433 predominately European American families. Similar patterns of associations were found across groups when distinguished by gender composition. Family environment emerged as an important factor in explaining internalizing problems as well as overt/relational aggression for both younger and older siblings. While perceived maternal psychological control was significantly positively related to overt/relational aggression and internalizing problems for younger siblings, it was significantly positively associated with only relational aggression for older siblings. Findings also provided partial support for the positive linkages between young adolescents’ aggression and their own and siblings’ internalizing problems above and beyond the aforementioned family and maternal variables. Results of the current study extend the understanding of adolescent aggression to a new relational context, or among siblings, and highlight the role of family factors in promoting or buffering the impact of aggression on internalizing behaviors.
Wendy C. GambleEmail:

Jeong Jin Yu   is a doctoral candidate in Family Studies and Human Development at the University of Arizona. He received his M.S. in Human Development and Family Studies from the University of Missouri-Columbia. His research interests include adolescent socio-emotional development and multivariate statistical methods. Wendy C. Gamble   is an associate professor at the University of Arizona in the Division of Family Studies and Human Development. She received her Ph.D. in Human Development and Family Studies from the Pennsylvania State University. Her current research focuses on the socialization of emotional competencies among children and on sibling interactions and developing self-systems among children and adolescents.  相似文献   
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Three main factors explain public support for EU membership: utilitarian expectations, the role of values and ideas, and class partisanship. In the Polish case, public opinion polls and issues more specific to Poland, such as the role of the Catholic Church, populist political parties and profound Euroscepticism among farmers, suggest that although these theoretical explanations overlap, each of them has a different explanatory value. The economic approach remains the best predictor of support for EU membership, and whereas values and identity are closely linked to and dependent upon economic expectations, the impact of national politics appears largely decoupled from Polish Euroscepticism.  相似文献   
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