全文获取类型
收费全文 | 240篇 |
免费 | 5篇 |
专业分类
各国政治 | 10篇 |
工人农民 | 36篇 |
世界政治 | 28篇 |
外交国际关系 | 7篇 |
法律 | 104篇 |
中国政治 | 4篇 |
政治理论 | 55篇 |
综合类 | 1篇 |
出版年
2024年 | 1篇 |
2023年 | 2篇 |
2020年 | 7篇 |
2019年 | 6篇 |
2018年 | 5篇 |
2017年 | 6篇 |
2016年 | 6篇 |
2015年 | 5篇 |
2014年 | 13篇 |
2013年 | 32篇 |
2012年 | 6篇 |
2011年 | 5篇 |
2010年 | 5篇 |
2009年 | 11篇 |
2008年 | 2篇 |
2007年 | 10篇 |
2006年 | 8篇 |
2005年 | 8篇 |
2004年 | 8篇 |
2003年 | 5篇 |
2002年 | 10篇 |
2001年 | 2篇 |
2000年 | 6篇 |
1999年 | 4篇 |
1998年 | 3篇 |
1997年 | 6篇 |
1996年 | 4篇 |
1995年 | 1篇 |
1994年 | 3篇 |
1993年 | 5篇 |
1992年 | 1篇 |
1991年 | 5篇 |
1990年 | 5篇 |
1989年 | 4篇 |
1988年 | 7篇 |
1987年 | 1篇 |
1986年 | 3篇 |
1985年 | 2篇 |
1983年 | 2篇 |
1982年 | 1篇 |
1981年 | 6篇 |
1980年 | 2篇 |
1979年 | 6篇 |
1978年 | 3篇 |
1977年 | 1篇 |
1975年 | 1篇 |
排序方式: 共有245条查询结果,搜索用时 15 毫秒
121.
A national sample of adults in the United States reported on presence, frequency, emotional impact, and behavioral impact
of psychologically abusive behaviors in their “worst” cohabiting relationship by their partner as well as by themselves. In
addition, they completed instrumentation measuring potential outcomes from much psychological maltreatment. Results from the
online survey indicated that psychological abuse of an egregious nature was highly reciprocal, although overall, respondents
reported that they engaged in psychological abuse less frequently than their partners and believed that their partners experienced
much less negative impact from the respondents’ actions. Specific categories of psychological abuse as well as specific behaviors
were also highly likely to be reciprocated. Combinations of high and low psychological abuse exhibited by the respondent and
his/her partner resulted in negative outcomes whenever the partner was high in psychological abuse whether or not the respondent
used these egregious tactics. 相似文献
122.
123.
124.
We analyze the relationship between prenatal WIC participation and birth outcomes in New York City from 1988-2001. The analysis is unique for several reasons. First, we have over 800,000 births to women on Medicaid, the largest sample ever used to analyze prenatal participation in WIC. Second, we focus on measures of fetal growth distinct from preterm birth, since there is little clinical support for a link between nutritional supplementation and premature delivery. Third, we restrict the primary analysis to women on Medicaid who have no previous live births and who initiate prenatal care within the first four months of pregnancy. Our goal is to lessen heterogeneity between WIC and non-WIC participants by limiting the sample to highly motivated women who have no experience with WIC from a previous pregnancy. Fourth, we analyze a large sub-sample of twin deliveries. Multifetal pregnancies increase the risk of anemia and fetal growth retardation and thus may benefit more than singletons from nutritional supplementation. We find no relationship between prenatal WIC participation and measures of fetal growth among singletons. We find a modest pattern of association between WIC and fetal growth among U.S.-born Black twins. Our findings suggest that prenatal participation in WIC has had a minimal effect on adverse birth outcomes in New York City. 相似文献
125.
This article describes the need for professional recognition of the magnitude of the problem of incest and the long-term effects on the lives of survivors. It suggests that women can be empowered to make positive lifestyle changes through long-term support. The educational opportunity provided for graduate students is also addressed. The intake process and the three phases of the group which extend over 56 sessions are described in detail. 相似文献
126.
127.
Chloe E. Swinfield Eleanor A.M. Graham Diane Nuttall Sabine Maguire Alison Kemp Guy N. Rutty 《Forensic Science International: Genetics Supplement Series》2009,2(1):183-184
It is proposed that a DNA stabilizing solution (DNA Genotek Inc.) designed to preserve DNA in saliva samples at room temperature can be extrapolated to the storage of swab heads. The aim of this study was to evaluate the effectiveness of the solution for the preservation of reference swabs (buccal) and trace samples (facial swabs). To this end, the solution was used during a twin-site DNA transfer project assessing background levels of carer DNA present in children. Tubes containing 400 μl of solution were used to store and transport swab heads. At the laboratory, samples were extracted using the QIAamp DNA Mini Kit (Qiagen), quantified using the Quantifiler Duo Kit and profiled using the AmpF?STR® SGM Plus® PCR Amplification Kit (both Applied Biosystems). Twenty-eight PCR cycles were applied to all samples. Thirty-four cycles or a longer electrophoresis injection time was applied to trace samples where necessary. All Reference swabs produced high quantities of DNA and full DNA profiles after 28 cycles. Profile morphology indicated good quality DNA with no degradation. Of the trace samples, sufficient profiles were achieved to study the transfer of carer DNA making the solution fit for continued use in this project. DNA stabilizing solution enables the storage and transportation of swabs without freezing. This is convenient, reduces transportation costs and enables instant analysis of samples upon arrival at the laboratory. This is a useful alternative for a multi-site research project as well as a reliable storage tool for use in remote areas. 相似文献
128.
Diane J. Flint D.D.S. M.S. Stephen Brent Dove D.D.S. M.S. Paula C. Brumit D.D.S. Marea White D.D.S. David R. Senn D.D.S. 《Journal of forensic sciences》2009,54(1):177-184
Abstract: A pilot study evaluated a computer‐based method for comparing digital dental images, utilizing a registration algorithm to correct for variations in projection geometry between images prior to a subtraction analysis. A numerical assessment of similarity was generated for pairs of images. Using well‐controlled laboratory settings, the method was evaluated as to its ability to identify the correct specimen with positive results. A subsequent clinical study examined longitudinal radiographic examinations of selected anatomical areas on 47 patients, analyzing the computer‐based method in making the correct identification based upon a threshold level of similarity. The results showed that at a threshold of 0.855, there were two false negative and two false positive identifications out of 957 analyses. Based on these initial findings, 25 dental records having two sets of full mouth series of radiographs were selected. The radiographs were digitized and grouped into six anatomical regions. The more recent set of films served as postmortem images. Each postmortem image was analyzed against all other images within the region. Images were registered to correct for differences in projection geometry prior to analysis. An area of interest was selected to assess image similarity. Analysis of variance was used to determine that there was a significant difference between images from the same individual and those from different individuals. Results showed that the threshold level of concordance will vary with the anatomical region of the mouth examined. This method may provide the most objective and reliable method for postmortem dental identification using intra‐oral images. 相似文献
129.
Billy Graeff Diego Monteiro Gutierrez Thais Sardá Paul Bretherton Marco Bettine 《Third world quarterly》2019,40(4):796-814
This article examines how Brazil was perceived internationally during the 2014 World Cup (2014WC), for which one of Brazil’s perceived objectives was to enhance its international image to play a more significant role on the world stage. Nine media outlets’ coverage of the 2014WC was analysed using the website Alexa. These outlets published 699 articles about diverse themes relating to Brazilian society. The outlets studied considered the event a success overall and emphasised Brazil’s natural beauty, but raised concerns about social problems such as inequality. We conclude that the 2014WC updated but did not fundamentally alter Brazil’s international image. 相似文献
130.
Sarah Jensen Racz Diane L. Putnick Joan T. D. Suwalsky Charlene Hendricks Marc H. Bornstein 《Journal of youth and adolescence》2017,46(8):1688-1701
Children’s and adolescents’ cognitive abilities, social adaptation, and externalizing behaviors are broadly associated with each other at the bivariate level; however, the direction, ordering, and uniqueness of these associations have yet to be identified. Developmental cascade models are particularly well-suited to (1) discern unique pathways among psychological domains and (2) model stability in and covariation among constructs, allowing for conservative tests of longitudinal associations. The current study aimed to identify specific cascade effects among children’s cognitive abilities, social adaptation, and externalizing behaviors, beginning in preschool and extending through adolescence. Children (46.2?% female) and mothers (N?=?351 families) provided data when children were 4, 10, and 14 years old. Cascade effects highlighted significant stability in these domains. Unique longitudinal associations were identified between (1) age-10 cognitive abilities and age-14 social adaptation, (2) age-4 social adaptation and age-10 externalizing behavior, and (3) age-10 externalizing behavior and age-14 social adaptation. These findings suggest that children’s social adaptation in preschool and externalizing behavior in middle childhood may be ideal intervention targets to enhance adolescent well-being. 相似文献