首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   1960篇
  免费   60篇
各国政治   165篇
工人农民   65篇
世界政治   116篇
外交国际关系   72篇
法律   1302篇
中国政治   23篇
政治理论   264篇
综合类   13篇
  2022年   12篇
  2020年   45篇
  2019年   40篇
  2018年   63篇
  2017年   80篇
  2016年   76篇
  2015年   36篇
  2014年   43篇
  2013年   229篇
  2012年   55篇
  2011年   66篇
  2010年   49篇
  2009年   45篇
  2008年   55篇
  2007年   52篇
  2006年   49篇
  2005年   54篇
  2004年   50篇
  2003年   56篇
  2002年   44篇
  2001年   64篇
  2000年   50篇
  1999年   48篇
  1998年   16篇
  1997年   14篇
  1996年   19篇
  1995年   12篇
  1994年   13篇
  1993年   12篇
  1992年   29篇
  1991年   33篇
  1990年   37篇
  1989年   40篇
  1988年   37篇
  1987年   25篇
  1986年   38篇
  1985年   28篇
  1984年   21篇
  1983年   16篇
  1982年   12篇
  1981年   18篇
  1980年   12篇
  1979年   19篇
  1978年   21篇
  1977年   17篇
  1971年   18篇
  1970年   17篇
  1969年   11篇
  1968年   18篇
  1967年   12篇
排序方式: 共有2020条查询结果,搜索用时 15 毫秒
991.
992.
ABSTRACT

There are strict laws relating to alcohol intake and driving; however, while most people are aware of these laws, drink driving still occurs. The current research provides an in-depth account of individuals’ awareness and attitudes towards current drink driving limits and laws in England. Individuals (N?=?83) were interviewed, and their responses recorded for thematic analysis. Results indicated major themes of: attitudes towards drink driving laws, limits, and effectiveness; reasons for drink driving; and post-drink driving reflections. Outcomes show that most individuals are aware there are strict laws, but are unaware of the exact limits, and do not understand how to convert legal limits into actual drinking behaviours. Sub-themes emerged indicating that individuals held heuristic beliefs about being able to consume one or two alcohol beverages without negative effects on their driving ability. Conclusions from this research indicate that views are mostly invariant across key population demographics; peer pressure was the only sub-theme that appeared to differ between younger and older individuals. The findings have implications for policy makers and future interventions in terms of clarifying drink driving limits and translating this into drinking behaviour. There was also some support for stricter laws and regulations.  相似文献   
993.
Although officially non-aligned during the Cold War, India remained closely aligned with the Soviet Union. After the Cold War, Indo-Russian ties have remained strong; currently the two countries share a Strategic Partnership in addition to numerous other bilateral treaties. When the United States first replaced Russia as India’s largest defence supplier, it made international headlines in security circles. Since then, there has been much speculation on the future of Indo-Russian ties. Since the essence of the Indo-Russian relationship is considered to be the large-scale military trade between the two states, the toppling of Russia as India’s premier defence provider naturally led to dismal predictions about the strength of their future ties. However, this approach discounts the various measures that both India and Russia have taken to institutionalize their friendship. By conducting a systematic analysis of the Indo-Russian bilateral treaties, this article assesses the levels of cooperation within this dyad. By using network analysis it demonstrates that the Indo-Russian relationship is cooperative rather than ad hoc, leading to deeper institutionalization that is unlikely to shift in the recent future.  相似文献   
994.
995.
The concept of a regime complex has proved fruitful to a burgeoning literature in international relations, but it has also opened up new questions about how and why they develop over time. This article describes the history of the energy regime complex as it has changed over the past 40 years, and interprets this history in light of an interpretive framework of the sources of institutional change. One of its principal contributions is to highlight what Stephen Krasner referred to as a pattern of “punctuated equilibrium” reflecting both periods of stasis and periods of innovation, as opposed to a gradual process of change. We show that the timing of innovation depends on dissatisfaction and shocks and that the nature of innovation—that is, whether it is path-dependent or de novo—depends on interest homogeneity among major actors. This paper is the first to demonstrate the empirical applicability of the punctuated equilibrium concept to international regime complexes, and contributes to the eventual development of a dynamic theory of change in regime complexes.  相似文献   
996.
This study examined effects of type of and cumulative burden of childhood adversities on bullying and cruelty to animals in the United States. Data were derived from Waves I and II of the National Epidemiologic Survey on Alcohol and Related Conditions, a nationally representative sample of U.S. adults. Structured psychiatric interviews were completed by trained lay interviewers between 2001-2002 and 2003-2004. Although the effects of childhood adversity diminished with the inclusion of confounding variables, several adversities remained significant. For bullying, these included being made to do chores that were too difficult or dangerous, threatening to hit or throw something, pushing, shoving, slapping, or hitting, and hitting that left bruises, marks, or injuries. With respect to cruelty to animals, swearing and saying hurtful things, having a parent or other adult living within the home that went to jail or prison, and adult/other person fondling/touching in a sexual way were significant. The final models indicated that the cumulative burden of childhood adversities had strong effects on the increased likelihood of bullying behavior but not cruelty to animals.  相似文献   
997.
PurposeIn many European countries, initiatives have emerged to reduce the use of seclusion and restraint in psychiatric institutions. To study the effects of these initiatives at a national and international level, consensus on definitions of coercive measures, assessment methods and calculation procedures of these coercive measures are required. The aim of this article is to identify problems in defining and recording coercive measures. The study contributes to the development of consistent comparable measurements definitions and provides recommendations for meaningful data-analyses illustrating the relevance of the proposed framework.MethodsRelevant literature was reviewed to identify various definitions and calculation modalities used to measure coercive measures in psychiatric inpatient care. Figures on the coercive measures and epidemiological ratios were calculated in a standardized way. To illustrate how research in clinical practice on coercive measures can be conducted, data from a large multicenter study on seclusion patterns in the Netherlands were used.ResultsTwelve Dutch mental health institutes serving a population of 6.57 million inhabitants provided their comprehensive coercion measure data sets. In total 37 hospitals and 227 wards containing 6812 beds were included in the study. Overall seclusion and restraint data in a sample of 31,594 admissions in 20,934 patients were analyzed. Considerable variation in ward and patient characteristics was identified in this study. The chance to be exposed to seclusion per capita inhabitants of the institute's catchment areas varied between 0.31 and 1.6 per 100.000. Between mental health institutions, the duration in seclusion hours per 1000 inpatient hours varied from less than 1 up to 18 h. The number of seclusion incidents per 1000 admissions varied between 79 up to 745. The mean duration of seclusion incidents of nearly 184 h may be seen as high in an international perspective.ConclusionCoercive measures can be reliably assessed in a standardized and comparable way under the condition of using clear joint definitions. Methodological consensus between researchers and mental health professionals on these definitions is necessary to allow comparisons of seclusion and restraint rates. The study contributes to the development of international standards on gathering coercion related data and the consistent calculation of relevant outcome parameters.  相似文献   
998.

Purpose

Whether lifetime abstainer's antisocial behavior is maladjusted or well-adjusted is unresolved. The aim of this study was to compare abstainers (defined as persons with no lifetime use of alcohol and other drugs and non-engagement in antisocial or delinquent behavior) with non-abstainers across a range of sociodemographic and mental health characteristics in the United States.

Methods

Data were derived from the National Epidemiologic Survey on Alcohol and Related Conditions, a nationally representative sample of U.S. adults. Structured psychiatric interviews (N = 43,093) using the Alcohol Use Disorder and Associated Disabilities Interview Schedule — DSM-IV version (AUDADIS-IV) were completed by trained lay interviewers between 2001 and 2002.

Results

The prevalence of abstaining was 11 percent. Abstainers were significantly more likely to be female, Asian and African-American, born outside the U.S., and less likely to be unemployed. Multivariate logistic regression analyses revealed that abstainers were significantly less likely to evidence lifetime mood, anxiety, or personality disorder compared to non-abstainers.

Conclusions

Findings indicate that abstainers are not maladapted and are comparatively more functional than non-abstainers.  相似文献   
999.
Histological studies of oral cavity mucosa and salivary glands in subjects with chronic alcoholic intoxication revealed changes at the surface of the tongue and in the glandular tissues. Specific features of chronic alcoholic intoxication include acinar and ductal hyperplasia, reduction of the adipose tissue mass in salivary gland stroma, predominance of T-lymphocytes in hard palate minor salivary glands and B-lymphocytes in the stroma of labial minor salivary gland, the absence of plasma cells in the stroma of hard palate minor salivary glands and labial mucosa. Leukoplakia, dysplasia, and hyperplasia of the basal epithelial layer of oral cavity mucosa are considered to be the signs of long-term (over 12 months) alcohol consumption.  相似文献   
1000.
The present work continues the search for methodological options facilitating the improvement and optimization of the biological microchip designed for genotyping the AB0 locus. It was shown in an earlier study designed to test a prototype biological microchip using a reference set of preparations with the known group specificity that under certain conditions some cells of the biochip appear to generate artifact hybridization signals that tend to make the results of genotyping either incorrect or difficult to interpret. We performed the correction of the molecular structure of DNA probes of the prototype biochip for the purpose of optimization of their hybridization potency. In addition, we developed and synthesized new DNA probes and designed new variants of the biochip. The experimental analysis of hybridization properties of all DNA probes thus obtained was carried out for the final choice of the most promising options suitable for the creation of the optimized biochip.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号