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111.
An automated process has been developed for the analysis of forensic casework samples using TECAN Genesis RSP 150/8 or Freedom EVO liquid handling workstations equipped exclusively with nondisposable tips. Robot tip cleaning routines have been incorporated strategically within the DNA extraction process as well as at the end of each session. Alternative options were examined for cleaning the tips and different strategies were employed to verify cross-contamination. A 2% sodium hypochlorite wash (1/5th dilution of the 10.8% commercial bleach stock) proved to be the best overall approach for preventing cross-contamination of samples processed using our automated protocol. The bleach wash steps do not adversely impact the short tandem repeat (STR) profiles developed from DNA extracted robotically and allow for major cost savings through the implementation of fixed tips. We have demonstrated that robotic workstations equipped with fixed pipette tips can be used with confidence with properly designed tip washing routines to process casework samples using an adapted magnetic bead extraction protocol. 相似文献
112.
Langevin R Curnoe S 《International journal of offender therapy and comparative criminology》2008,52(4):401-415
A sample of 2,286 male sex offenders and paraphilics and 241 nonsex offenders was evaluated for the prevalence of mental retardation and learning disorders, using the full Wechsler IQ scales. The sex offenders were generally of average intelligence, and the mentally retarded were not overrepresented among them, but the learning disordered were. There were no differences among sex offenders and controls in overall IQ or in the percentage of mentally retarded or learning-disordered cases, suggesting that the learning difficulties are not peculiar to sex offenders. There was a bias in referral source, with more mentally retarded, borderline-retarded, and/or learning-disordered cases being referred by the Children's Aid Society, prisons, and the Crown, suggesting that referral source may play a significant role in evaluating intelligence and mental retardation among sex offenders; but the overrepresentation of learning disorders among criminals appears to be a significant phenomenon, regardless of referral source. 相似文献
113.
International migration challenges traditional notions of citizenship as mobile citizens may retain or regain their right to vote in elections. This article examines the rebirth of noncitizen voting rights in US local elections during the past decades. While some campaigns provide voting rights only to authorized immigrants, other campaigns extend voting rights to all noncitizens regardless of their status. Some efforts have been led by immigrant rights organizations and other campaigns arose at the initiative of elected officials. Some measures have been passed—or were defeated—by a majority of voters in a jurisdiction (ballot proposal) while other measures have been passed—or were defeated—by elected representatives (as local statutes). Who spearheaded these campaigns for immigrant voting rights and why? What are key ingredients to the success or failure of these campaigns? What have been their impacts? Using qualitative and quantitative data gathered from field research and public records over the past decade, this article addresses these questions and their implications for advancing immigrant incorporation and democratic practice. 相似文献
114.
Brian Whitelaw Ron Smith Stephen Hansen 《Canadian public administration. Administration publique du Canada》2012,55(3):411-432
An analysis of current trends suggests that the delivery of policing services in Canada is fundamentally shifting. In 2011, the Province of Alberta established the Law Enforcement Framework, which includes Calgary Transit peace officers who are responsible for the safety and security needs of transit customers and employees. This article examines the role of Calgary Transit peace officers and makes recommendations for their incorporation into a broader model of nodal governance in order to ensure that the Calgary Police Service maintains a legitimate, coordinating role for the provision of public safety in the City of Calgary. 相似文献
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Niels van der Aa Geertjan Overbeek Rutger C. M. E. Engels Ron H. J. Scholte Gert-Jan Meerkerk Regina J. J. M. Van den Eijnden 《Journal of youth and adolescence》2009,38(6):765-776
This study examined the associations between adolescents’ daily Internet use and low well-being (i.e., loneliness, low self-esteem,
and depressive moods). We hypothesized that (a) linkages between high levels of daily Internet use and low well-being would
be mediated by compulsive Internet use (CIU), and (b) that adolescents with low levels of agreeableness and emotional stability,
and high levels of introversion would be more likely to develop CIU and lower well-being. Data were used from a sample of
7888 Dutch adolescents (11–21 years). Results from structural equation modeling analyses showed that daily Internet use was
indirectly related to low well-being through CIU. In addition, daily Internet use was found to be more strongly related to
CIU in introverted, low-agreeable, and emotionally less-stable adolescents. In turn, again, CIU was more strongly linked to
loneliness in introverted, emotionally less-stable, and less agreeable adolescents.
相似文献
Geertjan OverbeekEmail: |
118.
Margot Peeters Antonius H. N. Cillessen Ron H. J. Scholte 《Journal of youth and adolescence》2010,39(9):1041-1052
This study examined the heterogeneity of bullying among adolescents. It was hypothesized that bullying behavior serves different
social functions and, depending on these functions, bullies will differ in their skills, status and social behavior. In a
total sample of 806 8th graders, 120 adolescents (52 boys, 68 girls) were identified as bullies based on peer nominations.
An additional group of 50 adolescents (25 boys, 25 girls) served as the non-bully comparison group. Cluster analysis revealed
three corresponding bully subtypes for boys and girls: a popular-socially intelligent group, a popular moderate group, and
an unpopular-less socially intelligent group. Follow-up analyses showed that the clusters differed significantly from each
other in physical and verbal aggression, leadership, network centrality, peer rejection, and self-perceptions of bullying.
The results confirm the heterogeneous nature of bullies and the complex nature of bullying in the adolescent peer group. 相似文献
119.
Regina van den Eijnden Ad Vermulst Antonius J. van Rooij Ron Scholte Dike van de Mheen 《Journal of youth and adolescence》2014,43(5):790-802
Although peer victimization is of major concern and adolescents spend increasing amounts of time on the Internet, relatively little is known about the psychosocial antecedents and consequences of online victimization. The main aim of this study was to compare the psychosocial antecedents and consequences of online versus real-life victimization. More specifically, the bidirectional relationship between online and real-life victimization on the one hand and psychosocial problems (i.e., loneliness and social anxiety) on the other was examined. In addition, the moderating role of online aggression in the relationship between online victimization and subsequent psychosocial problems was studied. This prospective study, consisting of three annual measurements, was conducted among a sample of 831 adolescents (50.3 % girls) aged 11–15, of which most (80.2 %) had a Dutch ethnic background. The results indicate a unidirectional relationship whereby loneliness and social anxiety predict an increase in latter online victimization rather than the reverse. A bidirectional relationship was found for real-life victimization: loneliness (but not social anxiety) predicted an increase in latter real-life victimization, which in turn predicted an increase in subsequent social anxiety (but not loneliness). No moderating effects of online aggression were found. The findings of the present study suggest that negative online and in real life peer interactions have a differential meaning for, and impact on adolescents’ well-being. 相似文献
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