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排序方式: 共有202条查询结果,搜索用时 46 毫秒
81.
Annalisa Durdle Roland A.H. van Oorschot Robert John Mitchell 《Forensic Science International: Genetics Supplement Series》2009,2(1):180-182
Blowflies leave deposits, termed artefacts, through the processes of excretion and regurgitation. To date, little consideration has been given to the possibility of adult blowflies consuming biological material and subsequently acting as vectors of human DNA through these artefacts. In this study, Lucilia cuprina (Meigen) (Diptera: Calliphoridae) were fed either human blood or human semen ad libitum and their artefacts were analysed for human DNA content. Samples containing 1, 10, 30 and 50 artefacts were tested. Quantifiable and typeable levels of human DNA were found in samples derived from both food sources, and even in samples containing a single artefact. Semen-derived artefacts contained significantly more human DNA than artefacts produced after a blood meal. Consequently a smaller number of artefacts was required to collect sufficient DNA for genotyping. These findings are forensically important as it provides investigators with another potential source of DNA at a crime scene where a body has been moved, or an attempt has been made to clean up biological material. They also highlight how fly artefacts could potentially contaminate and compromise evidence. 相似文献
82.
Cristina Cattaneo Stefanie Ritz-Timme Peter Gabriel Daniele Gibelli Elena Giudici Pasquale Poppa Doerte Nohrden Sabine Assmann Roland Schmitt Marco Grandi 《Forensic science international》2009,183(1-3):e21-e24
The issue of juvenile pornography has seen an increase in the past few years of the number of expert opinions requested to forensic pathologists, paediatricians and other various experts within the forensic and medical fields concerning the age of represented individuals. Regardless of the entity of the problem, no actual method exists which can allow us to give an objective and scientific answer, particularly in the postpubertal stage. Using parameters related to sexual maturation can be very dangerous. Nonetheless some experts still insist with similar types of “expertises”. This study aims at verifying the ability of different experts in assessing age of postpubertal individuals represented in pornographic material. Results underline the difficulties and major uncertainties of age evaluation by visual observation of photographic material particularly when the subjects have reached the sexual maturation stage – and therefore in verifying whether the individual is above or below 18 years of age (an important age limit for most European countries as far as this type of crime is concerned). Furthermore the study stresses the need both to search for an alternate approach and to apply extreme caution in judicial evaluation. 相似文献
83.
Based on the thesis of growing overall inequality in the German society, this paper discusses changes in the inequality of wages for the period between 1998 and 2006. Our objective is to identify differences in real wage growth for various occupational classes. The theoretical foundation of the article is based on economic as well as sociological concepts. With regard to recent findings of labor economists, one could postulate that market forces driven by technological changes and the corresponding growth in the relative demand for highly-skilled labor have led to an increase in wage inequality (skill-biased technological change, SBTC). In contrast, a structural theory approach, based on the work of Aage B. Sørensen, would argue that increasing wage inequality is due to changes in the extent to which certain labor market groups are able to generate rents. For the empirical analysis, data from the German Socio-Economic Panel (GSOEP) and data from the BIBB/IAB-Survey are used. Our results show that people in lower occupational classes belong to the losers of the general income dynamics in Germany between 1998 and 2006. Moreover, the inclusion of a broad variety of characteristics of the occupational position reveals that the growth of wage inequality in Germany can be explained by skill-biased technological changes, but also by changes in rent generating processes. 相似文献
84.
Roland Sturm 《Politische Vierteljahresschrift》2009,50(3):408-432
Since 1949 we have witnessed paradigmatic changes in political science research concerning the field of German politics. The focus of this article is on the most important political institutions in Germany: Federal President, Federal Government, Federal Parliament, Bundesrat (quasi second chamber)/federalism and Federal Constitutional Court. German political science has produced an impressive number of publications on the German political system with a wide range of approaches and of high quality. What is to some extent lacking, however, is an innovative combination of the improved knowledge created with regard to the functioning of institutions in Germany on the one hand and of middle-range theories of political science on the other, especially of theories developed in international and comparative discourses. 相似文献
85.
86.
The relationships among social class, socialization practices, and psychosomatic ailments have been reported by several psychological and sociological studies. However, a careful review of these studies reveals some contradictory results. In addition to inadequate sample size, these studies have been carried out on children of preschool and grade school ages. We collected data from 1518 high school aged adolescents who had unbroken families and who might be regarded as products of their families' class and socialization practices. Our findings suggest definite effects of socioeconomic status on the mental health of the developing female children. The effects of some socialization practices, such as parental dominance, restrictiveness, punishment types, and warmth, on psychosomatic incidences are further examined. Implications of the present study are discussed.Received his Ph.D. from Vanderbilt University. Major interests include sociology of mental illness and deviant behavior. Currently he is working on a book concerning the mentally ill.Received his Ph.D. from Iowa State University. Major interests include methodology and social disorganization. Current research is in social gerontology and applied statistics. 相似文献
87.
Roland Bleiker 《Political studies》1999,47(4):661-676
This article analyses the political impact of Paul Celan's poetry to illustrate the potential for social transformation contained in seemingly apolitical practices of speaking and writing. Celan's work epitomizes the search for thinking space in the immediate post-war period. Much of the German language at the time was so closely associated with the horrors of the Nazi regime that it was difficult to address critically many important social issues. In dealing with this dilemma, Celan recognized that politics ought to deal with language, with how we have come to objectivize the dilemmas that surround us. His poetry tried to stretch the boundaries of the German language such that it became possible to speak once more, critically, dialogically, humanely. By scrutinizing the potential and limits of this process, the present article addresses various issues that are at stake in the interaction between language, politics and society. 相似文献
88.
Steinhausen Hans-Christoph Metzke Christa Winkler 《Journal of youth and adolescence》1998,27(4):429-441
The Youth Self Report (YSR) was used in a Swiss epidemiological study with 1093 subjects aged 10–17 years. Internal consistency was good for the second-order factors Internalizing Problems, ExternalizingProblems, and the Total Problem Score, whereas it was less satisfactory for almost all syndrome scales. In general, internal consistency coefficients were slightly lower in the Swiss sample than in the U.S. sample. Correlations between the syndrome scales resulted in good replications of the original findings as obtained in the U.S. normative sample. Effect analyses showed that sex is more important than age and nationality (indigenous vs. immigrant subjects). However, all effects were small. Correspondence between YSR and Child Behavior Checklist scores showed that agreement between adolescents' and parents' reports is relatively small. 相似文献
89.
Many terror attacks occur at the beginning of electoral terms. We present a game theoretical model with incomplete information to account for this empirical pattern. Both terrorists and governments can be of weak or strong types. We find that the risk of terror attacks is highest at the beginning of electoral terms, because striking early allows the terrorists to collect valuable information about the government’s type, and also because terrorists know that even initially weak governments sometimes retaliate to show toughness closer to an upcoming election. The model’s predictions are consistent with anecdotal evidence. 相似文献
90.
Principal-agent problems in international organizations 总被引:1,自引:0,他引:1
Roland Vaubel 《The Review of International Organizations》2006,1(2):125-138
The paper provides a framework for analysing control problems in international organisations and reviews the disparate evidence
from a public-choice perspective. Most examples concern the European Union, the International Monetary Fund, the World Bank
and the International Labour Organisation. International organisations suffer from principal-agent problems more than other
public or private organisations do because the chain of delegation is more extended. As survey evidence demonstrates, the
actors in international organisations do not share the preferences of the citizens because they have vested interests, and
the citizens believe that they have least influence at the international level. The paper argues that national and international
parliaments, the national governments and international supervisory boards or courts cannot solve the principal-agent problem
due to severe information cost and weak or distorted incentives.
JEL codes H79 · H11 相似文献