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101.
102.
In this paper the influence of social origin as well as both the political communication and the religious education in the family on the voting behaviour in the life course have been investigated. Furthermore, we investigate the intergenerational transmission of parental party identification and the duration of its impact on the children’s voting patterns. For the empirical analyses, retrospective longitudinal data are employed. The empirical results confirm the significant impact of the social origin, the religious education, and the parental party identification on voting. However, their impact decreases in the later stages of the life cycle. Furthermore, the intergenerational reproduction of parental party identification has decreased significantly over consecutive generations.  相似文献   
103.
104.

Objectives

To evaluate whether the 1990s crime drop reflects a decrease in offending prevalence (the fraction of the population engaged in crime), offending incidence (the frequency of offending among active criminals), or some combination of the two.

Methods

We use individual-level longitudinal data on adolescent offending patterns from the Pittsburgh Youth study (PYS), integrating information from the youngest and oldest cohorts to compare offending among 17–18 year old males at the beginning and end of the 1990s. Logistic and negative binomial regression models are estimated to assess whether there are significant differences in offending prevalence and incidence during the 1990s.

Results

The reduction in property crime rates in the PYS sample during the 1990s can be attributed to declines in both offending prevalence and incidence. The overall decline in serious violence during the 1990s for the full sample was primarily the result of a falloff in prevalence. However, for black youth our results indicate significant reductions in both the prevalence and incidence of serious violence. We did not detect a significant difference in illegal drug sales during the period.

Conclusions

Using longitudinal data on individuals to decompose aggregate crime trends into changes in the prevalence and incidence of offending offers insights into the nature of the 1990s crime drop that cannot be discerned from aggregate crime data. Future research should build on the current study by examining the specific mechanisms that influence change over time in crime prevalence, incidence, or both.
  相似文献   
105.
正The upcoming 18th National Congress of the Communist Party of China(CPC) will be inscribed as an especially historic event.The congress will further emphasize and clarify the principles and policies that have already been clearly stated by the Party.Led by the CPC,  相似文献   
106.
A STR mutation in a heteropaternal twin case.   总被引:2,自引:0,他引:2  
A heteropaternal male twin case with two men being alleged fathers was investigated as requested by the Court. Up to 37 PCR-based polymorphic DNA systems were studied in this case which was complicated by a paternal ACTBP2 mutation detected in one twin. This is the first report on a STR mutation in a double paternity case where both biological fathers were indisputably identified. The STR systems enable the resolution of these complex genetic relationships even in a case where a mutation in one STR locus was encountered.  相似文献   
107.
This longitudinal study was designed to test hypotheses concerning the influence of environmental changes in different groups (educational status; sex) of adolescents on their future orientation (FO). FO was measured through a free-response questionnaire on which the subjects indicated their hopes and fears (which were later categorized into various domains of life by independent judges). On a second questionnaire the subjects adjudged their present and future life in various given domains of life. The sample consisted of 24 male and 24 female adolescents, aged between 14–16 years at the time of the first measurement; the second measurement took place two years later. Half of the subjects of each sex were students at a Gymnasium (preparing for university study) at both times of measurement (high social status). The other half of the subjects of each sex were in their last year at the Hauptschule (continuation of elementary education) at the first time of measurement, and had taken up employment (e.g., an apprenticeship) by the time of the second measurement (low social status). At the time of the second measurement relatively more hopes and fears were voiced in the domains of personal development and occupation than at the first measurement. Independent of time of measurement, low-status subjects voiced relatively more hopes and fears related to the occupational domain, and boys had a more extended FO than girls. Low-status subjects — as compared to high-status subjects as well as to their own judgments at the first measurement — believed to a greater extent that the materialization of their hopes and fears depended on themselves rather than on external forces. These results support the assumption that FO cannot be dealt with as a global concept and that FO can be modified by change in the external environments, such as entry into an occupation.This study was conducted at the Sonderforschungsbereich 24, Sozial- und wirtschaftspsychologische Entscheidungsforschung, Universität Mannheim (West Germany), and financed by the Deutsche Forschungsgemeinschaft, with support from the Government of Baden-Württemberg. The three authors have contributed equally to this article.Received her Ph.D. from Universität Mannheim. Major interests are judgment and planning of small groups, adolescents, delinquents, and married couples.Received his Ph.D. from Princeton University. Major interests are small group processes, negotiation, and justice.He graduated from Universität Mannheim. Major interest is sociology of organizations.  相似文献   
108.
A population study on 13 tetra- and pentameric STR loci (D3S1358, VWA, D8S1179, D21S11, D18S51, D16S539, D2S1338, D19S433, THO1, FGA, ACTBP2 (SE33), Penta D and Penta E) was performed with Romanians from the Bucharest area.  相似文献   
109.
Abstract: This paper examines the Northern Prawn Fishery of Australia as an illustration of the consistent failures of systems of open (“market”?) access to common property goods. The dilemmas of collective action explain both why those occurred and substantially why subsequent regulatory intervention has not succeeded either in its stated objectives. It is argued, unfashionably, that the endemic nature of these collective action dilemmas in the fishery means that in 1987 the regulatory schema proposed by the government (the allocative coercion option?) would have provided superior outcomes to allocations based on self-regulation by the industry.  相似文献   
110.
In order to gain information regarding the ethnic origin of an unknown offender in a murder case it was necessary to sequence the HV1 and 2 regions of the mitochondrial DNA (mtDNA). The only evidentiary material that could be linked to the suspect was DNA, extracted from spermatozoa after differential lysis. The observed mtDNA sequences were identical to the sequences of the victim. Therefore, we had to check if this was a coincidence or the result of a technical limitation of the testing procedure. Subsequently, we performed a systematic study. In cases with complete separation of sperm and female cells it wasn't possible to obtain a mtDNA sequence for the sperm fraction. This phenomena is based on the loss of the sperm's flagellum and mid-piece during the first lysis step and a concomitant loss of the sperm's mitochondria. In our murder case, a minor carry-over of female cells to the sperm fraction was responsible for the sequencing result.  相似文献   
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