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   16502篇
  免费   520篇
各国政治   842篇
工人农民   540篇
世界政治   1286篇
外交国际关系   708篇
法律   9253篇
中国政治   126篇
政治理论   4112篇
综合类   155篇
  2023年   211篇
  2021年   130篇
  2020年   203篇
  2019年   291篇
  2018年   343篇
  2017年   406篇
  2016年   394篇
  2015年   274篇
  2014年   345篇
  2013年   1926篇
  2012年   382篇
  2011年   424篇
  2010年   380篇
  2009年   436篇
  2008年   419篇
  2007年   479篇
  2006年   434篇
  2005年   451篇
  2004年   451篇
  2003年   436篇
  2002年   444篇
  2001年   537篇
  2000年   477篇
  1999年   387篇
  1998年   244篇
  1997年   207篇
  1996年   217篇
  1995年   220篇
  1994年   220篇
  1993年   204篇
  1992年   310篇
  1991年   334篇
  1990年   293篇
  1989年   308篇
  1988年   285篇
  1987年   283篇
  1986年   322篇
  1985年   316篇
  1984年   280篇
  1983年   273篇
  1982年   192篇
  1981年   178篇
  1980年   150篇
  1979年   187篇
  1978年   116篇
  1977年   141篇
  1976年   121篇
  1974年   102篇
  1973年   95篇
  1972年   92篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
951.
The authors report a fatal case of a Persian leopard (Panthera pardus) attack in an animal sanctuary in Oklahoma. The victim was a 53-year-old Costa Rican woman who was attempting to feed the animal when she was attacked and killed. Autopsy, radiography, fingerprint analysis, microbiologic cultures, and dental impressions were used to evaluate the case. These simple techniques can be applied to similar cases involving wild and domestic animal attacks.  相似文献   
952.
The present study investigated the effect on witness confidence and accuracy of confusing questions often used by attorneys in court. Participants viewed a videotaped film and were individually questioned about the incident 1 week later. Half the participants were asked questions using six categories of confusing questions (negatives, double negatives, leading, multiple questions, complex syntax, and complex vocabulary); the remaining half were asked for the same information using simply phrased equivalents. Confusing questions reduced participant-witnesses' accuracy and suppressed confidence–accuracy relationships compared with the condition where simplified alternatives were asked. Witness performance was impaired by the fact that mock-witnesses rarely asked for a confusing question to be explained or qualified their answers. This experiment demonstrates the importance of ensuring that lawyers ask witnesses simple, clear, questions.  相似文献   
953.
954.
Although a pregnant woman can now refuse any medical treatment needed by the fetus, the Court of Appeal has acknowledged that ethical dilemmas remain, adverting to the inappropriateness of legal compulsion of presumed moral duties in this context. This leaves the impression of an uncomfortable split between the ethics and the law. The notion of a pregnant woman refusing medical treatment needed by the fetus is troubling and it helps little simply to assert that she has a legal right to do so. At the same time, the idea that a pregnant woman fails in her moral duty unless she accepts any recommended treatment or surgery--however great the burden--is also not without difficulty. This article seeks to find a way between these two somewhat polarized positions by arguing that, instead of being a question primarily about whether legally to enforce moral obligations, the 'maternal-fetal conflict' begins with previously unrecognized difficulties in determining when a woman's prima facie moral rights invoked in the treatment context should 'give way' to the interests of the fetus. This difficulty is mirrored within the law. Thus, how can we tell when a pregnant woman has the moral or legal duty to submit to a caesarean section? Seen in this way, the conflict is a problem which lies at the interface between moral and legal rights and duties, showing that there are important conceptual links between the ethics and the law. Against this background, this article explores the limits of a pregnant woman's right to bodily integrity by focusing upon the idea of her moral duty to aid the fetus through her body. Here we find difficulties in determining the existence and extent of this somewhat extraordinary duty. Such a duty is contrasted with both negative and positive duties toward others in the course of 'general conduct.' Attention to the social context of pregnancy and the refusal of treatment within this is also instructive. Overall, the purpose is to foster understanding and acceptance of the current legal position.  相似文献   
955.
The ability of a group of Canadian federal parole officers to detect deception was investigated over the course of 2 days of lie detection training. On the first day of training, 32 officers judged the honesty of 12 (6 true, 6 fabricated) videotaped speakers describing personal experiences, half of which were judged before and half judged after training. On the second day, 5 weeks later, 20 of the original participants judged the honesty of another 12 videotapes (again, 6 pre- and 6 posttraining). To isolate factors relating to detection accuracy, three groups of undergraduate participants made judgments on the same 24 videotapes: (1) a feedback group, which received feedback on accuracy following each judgment, (2) a feedback + cue information group, which was given feedback and information on empirically based cues to deception, and (3) a control group, which did not receive feedback or cue information. Results indicated that at baseline all groups performed at or below chance levels. However, overall, all experimental groups (including the parole officers) became significantly better at detecting deception than the control group. By the final set of judgments, the parole officers were significantly more accurate (M = 76.7%) than their baseline performance (M = 40.4%) as well as significantly more accurate than the control group (M = 62.5%). The results indicate that detecting deceit is difficult, but training and feedback can enhance detection skills.  相似文献   
956.
Stereolithography is a computer-mediated method that can be used to quickly create anatomically correct three-dimensional epoxy and acrylic resin models from various types of medical data. Multiple imaging modalities can be exploited, including computed tomography and magnetic resonance imaging. The technology was first developed and used in 1986 to overcome limitations in previous computer-aided manufacturing/milling techniques. Stereolithography is presently used to accurately reproduce both the external and internal anatomy of body structures. Current medical uses of stereolithography include preoperative planning of orthopedic and maxillofacial surgeries, the fabrication of custom prosthetic devices; and the assessment of the degree of bony and soft-tissue injury caused by trauma. We propose that there is a useful, as yet untapped, potential for this technology in forensic medicine.  相似文献   
957.
Mental health facilities are occasionally confronted with patients who display destructive or disruptive behaviors requiring physical restraint. Under these circumstances, restraint can be associated with death. This case report describes two fatalities associated with physical restraint applied by staff members at mental health facilities.  相似文献   
958.
959.
960.
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