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   19646篇
  免费   268篇
各国政治   841篇
工人农民   738篇
世界政治   1580篇
外交国际关系   921篇
法律   11162篇
中国共产党   2篇
中国政治   87篇
政治理论   4386篇
综合类   197篇
  2021年   113篇
  2020年   292篇
  2019年   337篇
  2018年   400篇
  2017年   498篇
  2016年   516篇
  2015年   364篇
  2014年   405篇
  2013年   1922篇
  2012年   502篇
  2011年   514篇
  2010年   415篇
  2009年   463篇
  2008年   534篇
  2007年   548篇
  2006年   502篇
  2005年   451篇
  2004年   463篇
  2003年   464篇
  2002年   432篇
  2001年   719篇
  2000年   653篇
  1999年   552篇
  1998年   317篇
  1997年   268篇
  1996年   230篇
  1995年   230篇
  1994年   265篇
  1993年   239篇
  1992年   355篇
  1991年   395篇
  1990年   349篇
  1989年   361篇
  1988年   326篇
  1987年   351篇
  1986年   355篇
  1985年   351篇
  1984年   295篇
  1983年   322篇
  1982年   265篇
  1981年   244篇
  1980年   190篇
  1979年   256篇
  1978年   176篇
  1977年   158篇
  1976年   137篇
  1975年   131篇
  1974年   152篇
  1973年   124篇
  1972年   117篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
951.
Abstract: Recently a small sampled cadaver study (n = 4) suggested that the human eyeballs are placed closer to the orbital roof and lateral orbital wall as first reported in the anatomical literature many years previously. This contrasts with central positioning of the eyeball within the orbit as advocated by the facial approximation literature. Given the limits of such small samples, this study re-examined globe position in nine new cadavers to help clarify which relationship is accurate. The results essentially confirm prior empirical findings except that the mean lateral divergences from the orbit center were found to be larger—the eyeball was found to be “displaced” 1.4 mm superiorly and 2.4 mm laterally. Medians calculated across all 13 cadavers from this study and the above-mentioned recent report refine these measurements to 1.4 and 2.3 mm respectively. Globe projection values were identical to those observed for living individuals (c. 16 mm).  相似文献   
952.
953.
Contradictory scholarly arguments and limited previous research currently compromise understanding of whether officer gender affects street-level police actions. This research probed those contradictions and added to the limited previous research by examining traffic ticket decisions by women and men Boston police during April and May of 2001. The multivariate story the data tell was one of no differences between women police and men police. If gender propels women and men police in different directions, as some scholars argue, then evidence of those differences simply was not visible when viewed through the lens of the present research.  相似文献   
954.
955.
    
In forensic anthropology, osteological sex estimation methods are continuously reevaluated and updated to improve classification accuracies. Therefore, to gain a comprehensive understanding of recent trends in sex estimation research in forensic anthropology, a content analysis of articles published between 2000 and 2022 in Forensic Science International, the Journal of Forensic Sciences, the International Journal of Legal Medicine, the American Journal of Biological Anthropology, and Forensic Anthropology, was performed. The main goals of this content analysis were to (1) examine trends in metric versus morphological research, (2) examine which areas of the skeleton have been explored, (3) examine which skeletal collections and population affinities have been most frequently utilized, and (4) determine which statistical methods were commonly implemented. A total of 440 articles were coded utilizing MAXQDA and the resulting codes were exported for analysis. Statistical analyses were conducted utilizing the Cochran-Armitage and Jonckheere-Terpstra tests for trends, as well as Fisher–Freeman–Halton tests. The results demonstrate that sex estimation research published in these journals has prioritized metric over morphological methods. Further, the most utilized skeletal regions continue to be the skull and pelvis, while the most popular classification statistics continue to be discriminant function analysis and logistic regression. This study also demonstrates that a substantial portion of research has been conducted utilizing U.S. and Europe-based collections and limited populations. Based on these results, future sex estimation research must continue exploring the use of long bones and other postcranial elements, testing newer methods of analysis, as well as developing population-inclusive methods.  相似文献   
956.
    
ABSTRACT

Studies have shown that long-lived individuals seem to pass their survival advantage on to their offspring. Offspring of long-lived parents had a lifelong survival advantage over individuals without long-lived parents, making them more likely to become long-lived themselves. We test whether the survival advantage enjoyed by offspring of long-lived individuals is explained by environmental factors. 101,577 individuals from 16,905 families in the 1812–1886 Zeeland cohort were followed over time. To prevent that certain families were overrepresented in our data, disjoint family trees were selected. Offspring was included if the age at death of both parents was known. Our analyses show that multiple familial resources are associated with survival within the first 5 years of life, with stronger maternal than paternal effects. However, between ages 5 and 100 both parents contribute equally to offspring’s survival chances. After age 5, offspring of long-lived fathers and long-lived mothers had a 16-19% lower chance of dying at any given point in time than individuals without long-lived parents. This survival advantage is most likely genetic in nature, as it could not be explained by other, tested familial resources and is transmitted equally by fathers and mothers.  相似文献   
957.
    
The COVID-19 pandemic dramatically changed employment across sectors in 2020. This Viewpoint essay examines public sector labor relations during the pandemic and describes the impact bargaining process that is used to protect public employees. The authors draw on their own experience with impact bargaining negotiations and the public labor relations, conflict management, and civil service reform literatures to develop recommendations for public union labor leaders during times of crisis. They suggest that public unions have an important role in crisis management but must act strategically to develop good working relationships with leadership and successfully negotiate employee protections in uncertain times.  相似文献   
958.
959.
    
The study has two main purposes. First, the study explores core ethical values and behaviors from the perspective of Thai public service organizational leaders. Second, the study investigates the extent to which public sector leaders in Thailand consider Buddhist-based mindfulness practice to be a potentially effective mechanism for reinforcing core ethical values and behaviors in the public sector in Thailand. Using interview data derived from in-depth semi-structured interviews with 12 senior public sector officials in Thailand, the analysis elicits four dimensions of core ethical values and behaviors that are perceived by Thai public service organizational leaders as central to ethical behavior in the public sector. The study also sheds light on the interviewees' positive perceptions towards mindfulness and the role its associated practices can play in promoting ethical decision making and behavior in the public sector in Thailand.  相似文献   
960.
    
Concerns over the unethical conduct of leaders and public officials have led to the renaissance of interest in public service ethics and values. Although national and organizational systems and structures have been instituted to either eradicate or ameliorate unethical behaviours in the public service of countries, the practice still persists with devastating consequences. As one way forward, spirituality has been touted as having the potential of stimulating the moral thoughts of individuals who are dealing with ethical issues, thereby reducing unethical behaviour and generating positive organizational behaviour. Drawing from the perspectives of developing and transitional countries, this special issue empirically examines the extent to which ethics, values and spirituality can reduce unethical behaviours.  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