全文获取类型
收费全文 | 1080篇 |
免费 | 50篇 |
专业分类
各国政治 | 84篇 |
工人农民 | 199篇 |
世界政治 | 90篇 |
外交国际关系 | 44篇 |
法律 | 421篇 |
中国政治 | 9篇 |
政治理论 | 278篇 |
综合类 | 5篇 |
出版年
2023年 | 2篇 |
2022年 | 3篇 |
2021年 | 2篇 |
2020年 | 20篇 |
2019年 | 32篇 |
2018年 | 40篇 |
2017年 | 47篇 |
2016年 | 37篇 |
2015年 | 30篇 |
2014年 | 45篇 |
2013年 | 177篇 |
2012年 | 35篇 |
2011年 | 43篇 |
2010年 | 23篇 |
2009年 | 29篇 |
2008年 | 42篇 |
2007年 | 44篇 |
2006年 | 53篇 |
2005年 | 45篇 |
2004年 | 46篇 |
2003年 | 39篇 |
2002年 | 46篇 |
2001年 | 12篇 |
2000年 | 14篇 |
1999年 | 17篇 |
1998年 | 10篇 |
1997年 | 10篇 |
1996年 | 9篇 |
1995年 | 9篇 |
1994年 | 21篇 |
1993年 | 17篇 |
1992年 | 13篇 |
1991年 | 8篇 |
1990年 | 8篇 |
1989年 | 9篇 |
1988年 | 8篇 |
1987年 | 12篇 |
1986年 | 9篇 |
1985年 | 12篇 |
1984年 | 7篇 |
1983年 | 8篇 |
1982年 | 6篇 |
1981年 | 5篇 |
1980年 | 6篇 |
1979年 | 3篇 |
1978年 | 2篇 |
1977年 | 4篇 |
1976年 | 3篇 |
1975年 | 2篇 |
1974年 | 3篇 |
排序方式: 共有1130条查询结果,搜索用时 15 毫秒
81.
82.
Seah LH Jeevan NH Othman MI Jaya P Ooi YS Wong PC Kee SS 《Forensic science international》2003,138(1-3):134-137
Allele frequencies for the 15 STR loci in the AmpFlSTR Identifiler kit were determined and compared for the three main ethnic groups of the Malaysian population comprising 210 Malays, 219 Chinese and 209 Indians. Blood was placed on FTA paper and DNA was purified in-situ. 相似文献
83.
84.
85.
86.
An Estimator for Some Binary-Outcome Selection Models Without Exclusion Restrictions 总被引:2,自引:0,他引:2
This article provides a new maximum-likelihood estimator forselection models with dichotomous dependent variables when identicalfactors affect the selection equation and the equation of interest.Such situations arise naturally in game-theoretic models whereselection is typically nonrandom and identical explanatory variablesinfluence all decisions under investigation. When identicalexplanatory variables influence selection and a subsequent outcomeof interest, the commonly used Heckman-type estimators identifyfrom distributional assumptions about the residuals alone. Whenits own identifying assumption is reasonable, the new estimatorallows the researcher to avoid the painful choice between identifyingfrom distributional assumptions alone and adding a theoreticallyunjustified variable to the selection equation in a mistakenattempt to "boost" identification. The article uses Monte Carlomethods to compare the small-sample properties of the estimatorwith those of the Heckman-type estimator and ordinary probit. 相似文献
87.
Rogel MJ Zuehlke ME Petersen AC Tobin-richards M Shelton M 《Journal of youth and adolescence》1980,9(6):491-506
The contraceptive behavior of adolescent girls was viewed from a decision-making perspective. A semistructured interview protocol was used in interviewing 120 girls aged 12–19 in three clinics (Teen Family Planning, Prenatal, Pediatric Acute Care) at Michael Reese Hospital and Medical Center on (1) demographic in formation; (2) sexual and obstetric history; (3) contraceptive and sexual knowledge, attitudes, and practices; (4) environmental pressures; (5) personality factors; and (6) decision-making style. We found that the girls were generally poor contraceptors. They viewed the costs of contraception (in terms of safety) to be high; and they positively valued physical intimacy, opportunities for which come up unexpectedly and sporadically. These factors, along with their ambivalent views toward pregnancy and childbearing seemed to encourage their risk-taking behavior. Once pregnancy occurred, it was carried to term because of the strong internal and external pressures they felt to have and keep the baby. The peer-led intervention program that we are developing based on the survey findings will focus on (1) the teenagers' lack of accurate and complete knowledge about birth control and conception, (2) their limited sense of options concerning birth control and pregnancy outcomes, and (3) their poor understanding of and lack of insight into what motivates their behavior.This study is part of the investigation being conducted by the YADMAC (Young Adult and Adolescent Decision Making About Contraception) Project at Michael Reese Hospital and Medical Center, 2959 South Cottage Grove, Chicago, Illinois 60616. The authors are all members of the YADMAC research team.Received Ph.D. from the University of Chicago. Current interests are human sexuality and reproductive behavior. Currently at Department of Psychology, St. Xavier College.Received M.D. from the University of Michigan. Current interests are liaison child psychiatry and adolescent sexuality.Received Ph.D. from the University of Chicago. Current interests are early adolescent development issues.Current interests are puberty and sex differences.B. A. candidate in social work, Roosevelt University. Current interests are adolescent sexuality and contraceptive behavior. 相似文献
88.
89.
Sue Kirvan 《Feminist Legal Studies》1999,7(3):333-342
This note examines the judgement of the House of Lords in the cases of Islam andShah, particularly with regard to their conclusion that women in Pakistan who were victims of domestic violence and not protected
by their state could qualify as members of a particular social group under the Geneva Convention, and therefore attain refugee
status. The note considers the Refugee Women's Legal Group's Gender Guidelines for the Determination of Asylum Claims in the
U.K. and discusses the problems faced by women who claim refugee status. Finally, the conceptualisation of domestic violence
as a political issue and therefore a matter falling within the scope of the Convention issue is analysed.
This revised version was published online in July 2006 with corrections to the Cover Date. 相似文献
90.