全文获取类型
收费全文 | 522篇 |
免费 | 41篇 |
专业分类
各国政治 | 45篇 |
工人农民 | 59篇 |
世界政治 | 51篇 |
外交国际关系 | 56篇 |
法律 | 257篇 |
中国政治 | 9篇 |
政治理论 | 82篇 |
综合类 | 4篇 |
出版年
2023年 | 11篇 |
2022年 | 3篇 |
2021年 | 8篇 |
2020年 | 28篇 |
2019年 | 19篇 |
2018年 | 35篇 |
2017年 | 45篇 |
2016年 | 39篇 |
2015年 | 30篇 |
2014年 | 24篇 |
2013年 | 68篇 |
2012年 | 24篇 |
2011年 | 14篇 |
2010年 | 16篇 |
2009年 | 18篇 |
2008年 | 15篇 |
2007年 | 25篇 |
2006年 | 29篇 |
2005年 | 17篇 |
2004年 | 14篇 |
2003年 | 9篇 |
2002年 | 19篇 |
2001年 | 4篇 |
2000年 | 3篇 |
1999年 | 1篇 |
1998年 | 6篇 |
1997年 | 5篇 |
1996年 | 1篇 |
1995年 | 1篇 |
1994年 | 2篇 |
1993年 | 1篇 |
1992年 | 1篇 |
1991年 | 2篇 |
1990年 | 1篇 |
1988年 | 3篇 |
1986年 | 2篇 |
1985年 | 5篇 |
1984年 | 3篇 |
1983年 | 5篇 |
1982年 | 3篇 |
1978年 | 2篇 |
1977年 | 1篇 |
1975年 | 1篇 |
排序方式: 共有563条查询结果,搜索用时 15 毫秒
31.
Vangie A. Foshee Thad S. Benefield Heath Luz McNaughton Reyes Susan T. Ennett Robert Faris Ling-Yin Chang Andrea Hussong Chirayath M. Suchindran 《Journal of youth and adolescence》2013,42(4):471-486
The peer context is a central focus in research on adolescent risk behaviors but few studies have investigated the role of the peer context in the perpetration of adolescent dating violence. This longitudinal study examined between-subjects and within-person contemporaneous and lagged effects of peer attributes, measured with social network analyses, on trajectories of dating violence perpetration and determined if effects varied by grade and/or sex of the adolescent. Data are from adolescents who participated in a five-wave panel study beginning when they were in 7 through 9th grade and ending when they were in 10 through 12th grade (n = 3,412); half were male, 40.5 % were white, 49.9 % were black and 10.4 % were of another race/ethnicity. Significant between-subjects effects indicate that adolescents who typically have friends who use dating violence, and girls who are typically high in social status, are at increased risk for using dating violence throughout adolescence. Adolescents who typically have high quality friendships and girls who typically have friends with pro-social beliefs are at decreased risk for using dating violence throughout adolescence. Significant within-person contemporaneous effects indicate that both boys and girls reported lower levels of dating violence than usual at times when they had more friends with pro-social beliefs, and reported higher levels of dating violence than usual at times when they had higher social status. None of the lagged effects were significant and none of the effects varied across grade. These findings suggest that the peer context plays an important role in the development of the perpetration of adolescent dating violence. 相似文献
32.
This article presents an analysis of two post-Soviet states, Kazakhstan and Azerbaijan, which can be identified as post-Soviet rentier states. Both countries are characterised economically by enormous national resources of gas and oil and low economic diversification as well as politically by strong autocratic presidentialism with neopatrimonial structures. These two factors, combined with further post-Soviet legacies such as a low level of political interest in the respective societies and a basically hierarchical orientation of the population, lead to a specific post-Soviet variety of rentierism. From a political science perspective, this article reveals the impact of resource policies on these comparably new political systems and concludes with a summary of core features of these post-Soviet rentier states. 相似文献
33.
Basal Vacuolization in Renal Tubular Epithelial Cells at Autopsy and Their Relation to Ketoacidosis 下载免费PDF全文
Chong Zhou M.B.B.S. Andrea J. Yool Ph.D. Roger W. Byard M.D. 《Journal of forensic sciences》2017,62(3):681-685
Basal vacuolization of renal tubular epithelial cells is a useful postmortem marker for ketoacidosis. To investigate its incidence and relationship to the severity of ketoacidosis, 158 autopsy cases with elevated β‐hydroxybutyrate (>1 mmol/L) over a 7‐year‐period were retrospectively reviewed. Sixty‐eight cases (43%) exhibited basal vacuolizations (vitreous β‐hydroxybutyrate: 1.16–29.35 mmol/L, mean 10.28 mmol/L), and 90 cases (57%) did not (vitreous β‐hydroxybutyrate: 1.03–13.7 mmol/L, mean 2.84 mmol/L). Quantitative analysis revealed on average a fourfold elevation in β‐hydroxybutyrate in cases with basal vacuolizations compared to those without; 10.3% of cases with β‐hydroxybutyrate concentrations between 1.01 and 2.00 mmol/L had basal vacuolizations, and this incidence increased to 33.3% with concentrations between 4.01 and 6.00 mmol/L. A marked increase in incidence to >70% was observed with concentrations >6.00 mmol/L, and basal vacuoles were invariably present (100%) with concentrations >14.01 mmol/L. This study demonstrates that basal vacuolizations are a sensitive marker for significant ketoacidosis and reaffirms its use as an indicator for likely cases of fatal ketoacidosis at autopsy. 相似文献
34.
35.
Andrea Malone 《澳大利亚女权主义者研究》1991,6(13):129-132
Regina Graycar and Jenny Morgan, The Hidden Gender of Law (The Federation Press) Leichhardt, 1990; Ngaire Naffine, Law and the Sexes (Allen and Unwin) Sydney, 1990. 相似文献
36.
This study examines the achievement of autonomy by a sample of 30 midly learning handicapped and 30 nonhandicapped adolescents. From participant observation over the course of a school year, a detailed account was obtained about the life of each subject, both in the home and among friends outside the home. Findings suggest that autonomy is achieved through a gradual process of negotiation during the high school years. The mildly handicapped adolescents generally lag behind their regular education counterparts in breaking away from the family. While almost three-fourths of the nonhandicapped sample had made significant gains toward increased freedom, less than half of the mildly handicapped sample had shed close supervision by parents. However, most of the handicapped adolescents were satisfied with the limited freedom they had. The data suggest that autonomy should be understood as relative to the needs and abilities of each individual. Not all adolescents develop at the same pace; not all feel the same desire to assert their independence from their parents when they reach a particular age.This research was supported by Grant HD23097 from the National Institute of Child Health and Human Development.Received his Ph.D. from the University of California, Irvine. Current interest is the adjustment problems of mildly learning handicapped adolescents.Received her Ed.D. from Columbia University. Current interest is social competence of mildly learning handicapped populations and family adjustment. 相似文献
37.
Andrea M. Rogow James E. Marcia Ben R. Slugoski 《Journal of youth and adolescence》1983,12(5):387-400
Eighty college males were given an expanded identity status interview which included two new interpersonal-sexual areas, “attitudes towards sexual expression” and “sex-role beliefs.” The relative contribution of the new content areas as well as of the standard three areas (occupation, religion, and politics) to overall identity status was assessed by noting the extent of correspondence. Identity status in each content area was also compared with performance on the dependent variable of cognitive complexity. Ideology contributed more than occupation both to overall status rating, as well as to discrimination on the dependent variable. Results on the two new areas supported the view that interpersonal-sexual concerns are important for men's identity development as well as for women's. The finding that all interview areas corresponded well with overall identity status and discriminated significantly on the dependent measure leads to the suggestion that the process variables of crisis and commitment may so overshadow a particular content area that any content of personal relevance for the late adolescent might be used in investigating ego identity development. 相似文献
38.
Steinhauer JR Volk A Hardy R Konrad R Daly T Robinson CA 《Journal of forensic sciences》2002,47(1):221-223
Ketosis occurs in ketoacidosis or malnourishment. When either is suspected in relation to a death, it may be important to analyze for ketosis at autopsy. We encountered a case where starvation was suspected in a deceased nursing home resident, where the body had been embalmed prior to autopsy. Gas chromatography (GC) was unable to separate acetone from formaldehyde, a component of embalming fluid. The Acetest is a simple test that can detect acetone and acetoacetate in body fluids. We validated the Acetest with GC on vitreous. The Acetest and GC were consistent except at very low levels of acetone or acetoacetate. The sensitivity of the Acetest for acetoacetate in vitreous was 10 mg/dL, consistent with early starvation. Significant interference from embalming fluid did not occur. The Acetest was negative in the described case. The Acetest is a simple and useful test for the detection of ketosis in embalmed autopsies. 相似文献
39.
40.