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   485篇
  免费   28篇
各国政治   40篇
工人农民   44篇
世界政治   43篇
外交国际关系   32篇
法律   277篇
中国政治   2篇
政治理论   74篇
综合类   1篇
  2023年   4篇
  2022年   4篇
  2021年   9篇
  2020年   22篇
  2019年   12篇
  2018年   17篇
  2017年   25篇
  2016年   31篇
  2015年   17篇
  2014年   21篇
  2013年   60篇
  2012年   28篇
  2011年   11篇
  2010年   13篇
  2009年   19篇
  2008年   16篇
  2007年   19篇
  2006年   22篇
  2005年   19篇
  2004年   13篇
  2003年   22篇
  2002年   26篇
  2001年   12篇
  2000年   11篇
  1999年   6篇
  1998年   8篇
  1997年   6篇
  1996年   1篇
  1995年   3篇
  1994年   1篇
  1993年   3篇
  1991年   1篇
  1989年   3篇
  1988年   1篇
  1987年   1篇
  1985年   2篇
  1984年   1篇
  1983年   1篇
  1981年   2篇
  1980年   3篇
  1979年   4篇
  1978年   3篇
  1977年   2篇
  1975年   1篇
  1974年   4篇
  1972年   1篇
  1970年   2篇
排序方式: 共有513条查询结果,搜索用时 31 毫秒
501.
502.
503.
Currently, there is a large gap between the proportion of employed and well‐educated women and those sitting on the boards of EU companies. This gap should be significantly diminished because it is mandated by the EU fundamental right of equality between women and men (Article 23 of the EU Charter of Fundamental Rights), and by the need for democratic legitimisation of the EU and of its economic governance (Articles 2 and 3(3) TEU). However, the Commission's proposal for a directive on improving the gender balance among non‐executive directors of companies listed on stock exchanges does not constitute an appropriate legal solution for this problem because it infringes the principles of proportionality and subsidiarity. There are many other instruments than compulsory gender quotas that can be used by EU institutions to promote more gender‐balanced boards of EU companies. The potential of such measures has not been utilised yet in full.  相似文献   
504.
505.
Recent studies have reported that quantifying symphyseal and auricular surface curvature changes on 3D models acquired by laser scanners has a potential for age estimation. However, no tests have been carried out to evaluate the repeatability of the results between different laser scanners. 3D models of the two pelvic joints were generated using three laser scanners (Custom, Faro, and Minolta). The surface curvature, the surface area, and the distance between co‐registered meshes were investigated. Close results were found for surface areas (differences between 0.3% and 2.4%) and for distance deviations (average <20 μm, SD <200 μm). The curvature values were found to be systematically biased between different laser scanners, but still showing similar trends with increasing phases/scores. Applying a smoothing factor to the 3D models, it was possible to separate anatomy from the measurement error of each instrument, so that similar curvature values could be obtained (p < 0.05) independent of the specific laser scanner.  相似文献   
506.
Suicide in children is a rare finding and is probably motivated by acts of impulsiveness. This study aims to contribute to the characterization of child suicide in a forensic perspective in the Portuguese population. Data of forensic autopsies from 2004 to 2012 related to suicide victims under 18 years were reviewed. A total of 17 cases, with a male predominance (64.7%) and a mean age of 15.24 ± 1.348 for both genders, were registered. The leading suicide method was hanging (35.3%), and a suicide note was found in 41.2%. Psychological autopsy proved to be useful in promoting a better understanding of these incidents and their antecedents. This study also offers useful information, namely the implied risk factors, for future programs of suicide research and prevention.  相似文献   
507.
Currently, SEM-EDS is used to detect gunshot residue (GSR) from the presence of Ba, Pb, and Sb in the sample. However, the development of new nontoxic ammunition (NTA) has prevented conventional metals from being found. In this work, we aim to determine the presence of an inorganic luminescent chemical marker based on rare earth in gunshot residues using the technique of squarewave voltammetry (SWV). After firing, the luminescent complex [(Eu2Zr)(btc)3(Hbtc)0.5.6H2O], which is used as a chemical marker, can be detected under a UV lamp. An aqueous solution with 0.1 mol L−1 KCl as supporting electrolyte can be easily collected on carbon paste electrode surfaces for SWV analysis A = 100 mV, f = 10 Hz, and step potential of 5 mV are required. The luminescent marker incorporated into the carbon paste electrode showed two anodic peak currents in the region of 0.4 V (vs Ag/AgCl) and at 0.75 V (vs Ag/AgCl) and also a cathodic one in 0.4 V (vs Ag/AgCl). SEM-EDS was able to analyze the same voltammetric results for conventional and nontoxic ammunition containing the luminescent marker. Therefore, voltammetry and SEM-EDS are valid for detecting the new residue marker in GSR. Despite this, the electrochemical method is still more advantageous because of its low cost and lack of expensive equipment and supplies in forensic laboratories.  相似文献   
508.
This paper will analyse what it takes to conduct feminist and sensitive research in countries that have seen mass human rights violations. Transitional justice research involves critical examination of difficult topics which raises a number of ethical and methodological issues for both the participants and the researchers. Although empirical research has been a facet of the studies produced in the field, researchers’ accounts of undertaking research in often politically sensitive environments is largely missing from published books and research reports. This paper is informed by personal experiences of doing research in wartime rape in the ethnically and politically divided country of Bosnia and Herzegovina. I argue that the researcher’s profile and positionality directly affects the fieldwork and that fieldwork is a dialogical process which is structured by the researcher and the wider political processes in the country.  相似文献   
509.
This study identifies predictors of favorable attitudes toward spanking. Analyses were performed with survey data collected from a representative sample of 1,000 adults from Quebec, Canada. According to this survey, a majority of respondents endorsed spanking, despite their recognition of potential harm associated with corporal punishment (CP) of children. The prediction model of attitudes toward spanking included demographics, experiencing or witnessing various forms of family violence and abuse in childhood, and perceived frequency of physical injuries resulting from CP. Spanking was the most reported childhood experience (66.4%), and most violence and abuse predictors were significantly and positively correlated. Older respondents who were spanked in childhood and who believed that spanking never or seldom results in physical injuries were the most in favor of spanking. On the other hand, respondents who reported more severe physical violence or psychological abuse in childhood were less in favor of spanking. Findings are discussed in terms of prevention of CP and family coercion cycle.  相似文献   
510.
Tianeptine (Stablon), although structurally similar to tricyclic antidepressants, acts by enhancing the reuptake of serotonin. A fatal case is presented involving a 26-year-old man, found lying in bed with a "mushroom of foam" around his mouth. Empty blister packs of Stablon and a suicide note were found next to the body. A liquid-liquid extraction procedure with n-hexane: ethyl acetate and n-hexane: 2-propanol, followed by LC-DAD-MS analysis, using positive mode electrospray ionization was performed. The detection limit was 0.001 microg/mL. The toxicological results revealed the following tianeptine concentrations in the post-mortem samples: blood 5.1 microg/mL; urine 2.0 microg/mL; liver 23 microg/g; stomach contents 22 mg. Femoral blood analyses also revealed an ethanol concentration of 0.53 g/L. The present method was also developed and validated for the other post-mortem specimens, since no previous published data had confirmed the post-mortem distribution of tianeptine. The absence of other suitable direct causes of death (macroscopic or histological) and the positive results achieved with the toxicological analysis led the pathologist to rule that death was due to an intoxication caused by the suicidal ingestion of tianeptine in combination with alcohol.  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