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   457篇
  免费   23篇
各国政治   52篇
工人农民   41篇
世界政治   44篇
外交国际关系   22篇
法律   149篇
中国政治   4篇
政治理论   149篇
综合类   19篇
  2023年   2篇
  2022年   3篇
  2021年   4篇
  2020年   5篇
  2019年   10篇
  2018年   8篇
  2017年   10篇
  2016年   12篇
  2015年   14篇
  2014年   9篇
  2013年   95篇
  2012年   10篇
  2011年   11篇
  2010年   10篇
  2009年   13篇
  2008年   23篇
  2007年   11篇
  2006年   9篇
  2005年   12篇
  2004年   10篇
  2003年   15篇
  2002年   14篇
  2001年   13篇
  2000年   6篇
  1999年   12篇
  1998年   10篇
  1997年   10篇
  1996年   6篇
  1995年   6篇
  1994年   6篇
  1993年   4篇
  1992年   6篇
  1991年   7篇
  1990年   3篇
  1989年   12篇
  1988年   7篇
  1987年   5篇
  1986年   8篇
  1985年   3篇
  1984年   6篇
  1983年   4篇
  1982年   3篇
  1981年   4篇
  1980年   6篇
  1979年   4篇
  1977年   3篇
  1976年   3篇
  1974年   3篇
  1971年   2篇
  1970年   3篇
排序方式: 共有480条查询结果,搜索用时 562 毫秒
471.
We reported on the death by poisoning of a one-month-old baby that had followed the death of one of her sister (due to cyamemazine overdose). Exhumation of the corpse was done 8 months after burial and revealed the presence of amitriptyline. Parent drug and its metabolite were analysed by HPLC-MS/MS in positive ionisation mode on a C(18) analytical column using a gradient of acetonitrile and 2mM formate buffer at pH=3. Quantification is based on the main ion m/z=233, the common product ion of nortriptyline (MH(+), m/z 264), amitriptyline (MH(+), m/z 278) and nortriptyline D3 used as internal standard (MH(+), m/z 267). Amitriptyline and nortriptyline in the liver were measured at a concentration of 29.8 and 3.6 μg/g, respectively. Hair analyses revealed the presence of amitriptyline and nortriptyline at concentrations of 1811 and 43 pg/mg, respectively, while complementary analyses showed the presence of bromazepam in the hair at a concentration of 740 pg/mg, thus documenting previous administrations. The mother confessed later having used the drinkable form of the pharmaceutical LAROXYL(?) by pouring the content of a 20 ml bottle (at 40 mg/ml) into the feeding-bottle of her child. The milk was sweet but still bitter and following the testimony of a close relative, the whole family helped to feed the crying baby.  相似文献   
472.
The relationship between situational factors and the modus operandi of 103 adolescents involved in sexual offenses against children (12 years old or younger) is analyzed. Situational factors taken into account in this study are the location of the crime, the offender-victim relationship, and the presence of deviant sexual fantasies involving the victim prior to the offense. Modus operandi strategies were measured on the basis of participants' responses to Kaufman's Modus Operandi Questionnaire. Results indicate that modus operandi strategies are influenced by situational factors and that the offender's home, when no one else is home, is likely to be the place and the situation for adolescent offenders to adopt manipulative strategies. Suggestions are made regarding future modus operandi studies.  相似文献   
473.
Although not widely recognized, tooth decay is the most common childhood chronic disease among children ages five to seventeen. Despite higher rates of dental caries and greater needs, low-income minority children enrolled in Medicaid are more likely to go untreated relative to their higher income counterparts. No research has examined this issue for children with special needs. We analyzed Medicaid enrollment and claims data for special-needs children enrolled in the District of Columbia Medicaid program to evaluate receipt of recommended preventive dental care. Use of preventive dental care is abysmally low and has declined over time. Enrollment in managed care rather than fee for service improves the likelihood that special-needs children receive recommended preventive dental services, whereas residing farther from the Metro is an impediment to receipt of dental care.  相似文献   
474.
Many dependent variables of criminological interest have censored distributions. Investigations that use such variables increasingly have turned to the Tobit model, a censored regression technique that is specified based on a latent dependent variable. When used under suitable circumstances, this model provides appropriate estimates. This paper discusses key assumptions of the Tobit model. It then highlights the risk of violating these assumptions and reviews alternative flexible parametric and semiparametric modeling techniques, currently used sparingly in criminology, which researchers may find helpful when assumptions regarding the error terms are untenable. By using an empirical example focused on sentencing outcomes and comparing estimates across analytic methods, this study illustrates the potential utility of simultaneously estimating the Tobit model along with some alternatives.
Christopher J. SullivanEmail:
  相似文献   
475.
The relationship of trust between mediators and parties is a key element of the mediation process. This article reviews the trust relationship from the parties' perspectives. A qualitative research methodology was used to identify five key factors explaining why parties trust their mediator: degree of mastery over the process, explanation of the process, warmth and consideration, chemistry with the parties, and lack of bias toward either party. The theoretical and practical implications of the results are discussed.  相似文献   
476.
Abstract

We use household survey data from Nepal to investigate relationships between women’s empowerment in agriculture and production diversity on maternal and child dietary diversity and anthropometric outcomes. Production diversity is positively associated with maternal and child dietary diversity, and weight-for-height z-scores. Women’s group membership, control over income, reduced workload, and overall empowerment are positively associated with better maternal nutrition. Control over income is positively associated with height-for-age z-scores (HAZ), and a lower gender parity gap improves children’s diets and HAZ. Women’s empowerment mitigates the negative effect of low production diversity on maternal and child dietary diversity and HAZ.  相似文献   
477.
ABSTRACT

This article investigates the direct and indirect effects of female education on full-time labour market employment using Guinean demographic and health surveys. It addresses potential endogeneity of female education, unobserved heterogeneity and sample selectivity concerns using the control function model and a non-self-cluster identification strategy. Results show that female education has a diminishing direct effect on full-time employment, with the inverted-U-shaped relationship portraying that women with seven-plus years of schooling are less likely to be regularly employed than their counterparts with less years of schooling. Interacting female education and its square with the corresponding reduced form residuals increase the probability of full-time labour market employment – an indication that female education and unobserved correlates are complementary. Thus, highly educated Guinea women do not increase their full-time market engagements – a pointer of the importance they may be attributing to home-produced goods and services that push them to perhaps prefer flexi-work arrangements such as occasional or seasonal market engagements.  相似文献   
478.
What happens to the politics of welfare in the Global South when neoliberal values are questioned? How is welfare re-imagined and re-enacted when governments seek to introduce progressive change? Latin America provides an illustration and a valuable entry point to debates about ‘interruptions’ of neoliberalism and the changing nature of social policy. Drawing on examples of disability policies in Ecuador and care provision in Uruguay, we argue that there is a ‘rights turn’ in welfare provision under the left that reflects a recognition that previous welfare models left too many people out, ethically and politically, as well as efforts to embed welfare more centrally in new patterns of respect for socio-economic and identity-based human rights. Given Latin America’s recent contestation of neoliberal development as well as its history of sometimes dramatic welfare shifts, the emergence of rights-based social provision is significant not just for the region but also in relation to global struggles for more equitable governance.  相似文献   
479.
480.
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