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   682篇
  免费   25篇
各国政治   50篇
工人农民   104篇
世界政治   41篇
外交国际关系   28篇
法律   309篇
中国政治   8篇
政治理论   164篇
综合类   3篇
  2022年   3篇
  2020年   16篇
  2019年   22篇
  2018年   22篇
  2017年   24篇
  2016年   23篇
  2015年   17篇
  2014年   22篇
  2013年   82篇
  2012年   17篇
  2011年   25篇
  2010年   12篇
  2009年   25篇
  2008年   26篇
  2007年   16篇
  2006年   11篇
  2005年   15篇
  2004年   26篇
  2003年   18篇
  2002年   23篇
  2001年   8篇
  2000年   12篇
  1999年   13篇
  1998年   8篇
  1997年   7篇
  1996年   15篇
  1995年   13篇
  1994年   8篇
  1993年   13篇
  1992年   11篇
  1991年   6篇
  1990年   7篇
  1989年   9篇
  1988年   9篇
  1987年   11篇
  1986年   7篇
  1985年   8篇
  1984年   14篇
  1983年   11篇
  1982年   8篇
  1981年   8篇
  1980年   3篇
  1979年   6篇
  1978年   3篇
  1977年   4篇
  1976年   5篇
  1975年   6篇
  1972年   5篇
  1969年   4篇
  1968年   4篇
排序方式: 共有707条查询结果,搜索用时 0 毫秒
701.
Purpose. Enhanced Thinking Skills (ETS) has been the most widely delivered cognitive skills programme in the prisons of England and Wales. Four quasi‐experimental outcome studies have produced mixed results, a qualitative survey of offenders’ and facilitators’ experience on the programme proved useful in programme refinement, and a study using random allocation provided evidence that ETS impacts significantly and positively on short‐term attitudinal change. This study aims to make a further contribution, using another methodology, to the accumulation of evidence. Methods. This was a real‐world evaluation, comparing the reconviction outcomes of the population of 17,047 ETS participants in custody from 2000 to 2005 with a national cohort of 19,792 prisoners released over the same period. Results. Overall, prisoners who had attended ETS were found to reoffend at a rate 6.4 percentage points less than the cohort (rising to 7.5 percentage points for programme completers) and 9.5 percentage points less than the predicted rate. In all but the very highest risk group and in every sentence length band, the reoffending outcomes for ETS participants were significantly better than for prisoners in the cohort. Conclusions. It is argued that this non‐experimental methodology makes a contribution to the ‘What Works’ evidence.  相似文献   
702.
Family Relationship Centres (FRCs) have been described as a centerpiece of Australia's 2006 family law reforms. This paper places these centres in the larger context of the reforms and their commitment to providing community‐based family services in the family law area. The paper also examines the empirical evidence regarding FRCs' use and effectiveness. It notes that while the objectives and intentions of FRCs place considerable emphasis on strengthening family relationships and assisting families to stay together, the centres themselves have only a modest level of direct involvement with intact families. FRCs tend to have strong links with other community‐based family services, many of whom are more engaged with intact families; but it is difficult to gauge their effectiveness in this area. Most FRCs' direct services are aimed at separating families and most of that work involves family dispute resolution (family mediation) and associated services such as screening and assessment and the provision of relevant information. A substantial majority of clients who attend FDR at an FRC reach agreement about their parenting arrangements either at FDR or subsequent to attending FDR. These agreements also tend to hold up in the medium term. A majority of parents believe that at FDR, the child(ren)'s needs were taken into account; the parenting agreement worked for the child(ren); and the parenting agreement worked for them. A substantial proportion of FRC clients come from families that have experienced family violence or other dysfunctional behaviours, and such behaviours reduce the chances of resolving parenting disputes. The paper concludes by suggesting that having been created mainly as a default alternative to legal interventions and court processes, it is likely that a major future strength of FRCs will lie in their emerging capacity to work constructively not only with other relationship services and networks, but with family lawyers and the courts.  相似文献   
703.
This article explores three NGO projects that assemble and distribute clean birthing kits in Ethiopia. It contrasts the government's health strategy that aims to increase skilled birth attendance, with local realities as most women in rural and remote settings give birth at home, often in unhygienic conditions, and without skilled assistance. Many health facilities are also unable to provide hygienic conditions for birthing women. The findings indicate that clean birth kits have assisted the NGOs to effectively promote clean delivery at home or in health facilities, and to encourage antenatal care, and early referral to emergency obstetric and new-born care.  相似文献   
704.
Analysis of impurities in seized MDMA tablets can be used to determine the synthesis method used and to identify links among exhibits. However, no standardized method exists to generate impurity profiles, limiting comparisons among different laboratories. This research investigated the effect of extraction procedure and gas chromatography temperature program on the resulting impurity profiles. Five exhibits were extracted using liquid–liquid extraction (LLE) and headspace solid‐phase microextraction (HS‐SPME), then analyzed using two different temperature programs. Profiles were statistically assessed using principal components analysis. While LLE was more reproducible, more compounds were extracted using HS‐SPME, thus providing more informative chemical profiles. The longer temperature program (53 min vs. 36 min) allowed greater discrimination of exhibits, due to improved precision as a result of an extended hold time (12 min). This research further highlights the need for standardized extraction and analysis procedures to allow comparison of chemical profiles generated in different laboratories.  相似文献   
705.
706.
Abstract: In fire debris analysis, weathering of ignitable liquids and matrix interferences can make the identification of ignitable liquid residues (ILRs) difficult. An objective method was developed to associate ILRs with the corresponding neat liquid with discrimination from matrix interferences using principal components analysis (PCA) and Pearson product moment correlation (PPMC) coefficients. Six ignitable liquids (gasoline, diesel, ultra pure paraffin lamp oil, adhesive remover, torch fuel, paint thinner) were spiked onto carpet, which was burned, then extracted using passive headspace extraction, and analyzed by gas chromatography‐mass spectrometry. Both light and heavy burn conditions were investigated. In the PCA scores plot, ignitable liquids were discriminated based on alkane and aromatic content. All ILRs were successfully associated with the corresponding neat liquid using both PCA and PPMC coefficients, regardless of the extent of burning. The method developed in this research may make the association of ILRs with corresponding neat liquids more objective.  相似文献   
707.
Sweden is no longer a negative, exceptional case regarding the presence of radical right‐wing populist parties. The Sweden Democrats has continually grown stronger, and in 2010 they won seats in the Swedish parliament. However, their electoral support varies considerably across Sweden. This study analyses their electoral support in 290 Swedish municipalities in order to explain this variance. Support is found for the social marginality hypothesis: electoral support for the Sweden Democrats tends to be negatively correlated with the average level of education and with the Gross Regional Product per capita, and positively correlated with the unemployment rate. The ethnic competition hypothesis, that there is a positive correlation between the proportion of immigrants and electoral support of the Sweden Democrats, is also supported.  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