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   540篇
  免费   39篇
各国政治   40篇
工人农民   61篇
世界政治   53篇
外交国际关系   56篇
法律   266篇
中国政治   9篇
政治理论   90篇
综合类   4篇
  2023年   11篇
  2022年   3篇
  2021年   8篇
  2020年   28篇
  2019年   20篇
  2018年   36篇
  2017年   44篇
  2016年   39篇
  2015年   29篇
  2014年   25篇
  2013年   70篇
  2012年   23篇
  2011年   14篇
  2010年   16篇
  2009年   19篇
  2008年   17篇
  2007年   26篇
  2006年   30篇
  2005年   17篇
  2004年   14篇
  2003年   9篇
  2002年   18篇
  2001年   4篇
  2000年   4篇
  1999年   1篇
  1998年   7篇
  1997年   2篇
  1996年   1篇
  1995年   1篇
  1994年   2篇
  1993年   1篇
  1992年   3篇
  1991年   2篇
  1990年   2篇
  1988年   3篇
  1986年   3篇
  1985年   5篇
  1984年   4篇
  1983年   5篇
  1982年   4篇
  1979年   1篇
  1978年   2篇
  1977年   1篇
  1976年   1篇
  1975年   1篇
  1971年   1篇
  1968年   1篇
  1956年   1篇
排序方式: 共有579条查询结果,搜索用时 15 毫秒
41.
The eruption and mineralization of third molars are the main criteria for dental age estimation of living people involved in criminal proceedings. Since the development of third molars is usually completed by the age of 19 or 20 years, this feature cannot be used to ascertain whether a person has attained the forensically relevant age of 21 years. This study examined whether the DMFT index or the third molar DFT index could supply reliable information enabling conclusions to be drawn about whether a person has reached the age of 21. To this end, 650 conventional orthopantomograms of German subjects aged 18 to 30 years were evaluated. The DMF index variations considered were found to be unsuitable for determining whether a person is over 21 because they displayed a weak correlation with age and considerable individual scatter. A high indicative value can only be attributed to a third molar DFT index of 4, although this is rarely observed in the relevant age group. An X-ray examination of the medial clavicular epiphyseal cartilage is, therefore, strongly recommended when assessing whether a person has attained 21 years of age.  相似文献   
42.
43.
Chioqueta AP  Stiles TC 《危机》2003,24(3):105-112
The present study examined the relationships between specific anxiety, mood disorders, levels of hopelessness, and suicide ideation. The sample consisted of 606 outpatients recruited from several psychiatric settings. It was found that dysthymia was significantly associated with hopelessness. Patients presenting major depressive episode with higher anxiety symptoms had significantly increased scores on the hopelessness scale. Major depressive episode and bipolar disorder, but not dysthymia, were significantly associated with higher levels of suicide ideation. Increased levels of anxiety symptoms in patients with dysthymia were associated with increased levels of suicide ideation, while increased depressive symptoms in patients with specific phobia and generalized anxiety disorder were associated with significantly lower levels of suicide ideation. The findings suggest that depressive disorders, but not anxiety disorders, constitute risk for suicide. Moreover, the differentiation between a depressive and an anxiety disorder as the principal diagnosis, as well as the assessment of anxiety-level symptoms in patients with major depressive episode and dysthymia, seems of special relevance when assessing suicide risk.  相似文献   
44.
45.
Considers the issue of patent rights in Argentina, Brazil, Chile, and Mexico. Reviews both theoretical and empirical literature on fitting patent systems to national circumstances. Data are considered shedding light on trade flows and capital formation, two areas impacted by strong or weak protection. Recommends a general hybrid system for Latin American nations, meeting GATT standards while remaining adaptable to individual country needs.  相似文献   
46.
47.
48.
49.
Interpersonal violence within lesbian relationships is a significant yet understudied problem. Women attending a gay pride festival in Atlanta, GA, were asked to complete a survey concerning same-sex interpersonal violence. Women who reported being in a current or previous same-sex partner relationship were included in the analyses (N = 226). Factors that occurred in the context of interpersonal violence were investigated: substance use, HIV/STI risk behaviors, barriers to reporting abuse, and attitudes inhibiting seeking of social support. In addition, the survey assessed relationship-related power dynamics. Results of multivariate analyses support the hypotheses that power imbalance and inequality when making sex-related decisions within women’s same-sex relationships are associated with interpersonal violence. Further findings suggested that a combination of factors must be considered when dealing with and reducing the risk for violence in same-sex relationships.  相似文献   
50.
When I was in high school, I went on a family vacation to Ocho Rios, Jamaica. I was getting lunch at a grilled chicken stand, when the cook asked me, "Miss Chin, where are you from?" (Jamaicans use Miss Chin as an affectionate nickname for all Chinese women.) I answered, "I’m from New Jersey, but I’m Korean." He practically dropped his spatula. "Whaaaat? I never met Korean Japanese Miss Chin fromNewJersey!"heshouted.Thatwas the only time I’ve had someone  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