全文获取类型
收费全文 | 16293篇 |
免费 | 491篇 |
专业分类
各国政治 | 619篇 |
工人农民 | 673篇 |
世界政治 | 1100篇 |
外交国际关系 | 538篇 |
法律 | 10076篇 |
中国共产党 | 34篇 |
中国政治 | 162篇 |
政治理论 | 3381篇 |
综合类 | 201篇 |
出版年
2020年 | 210篇 |
2019年 | 223篇 |
2018年 | 340篇 |
2017年 | 367篇 |
2016年 | 407篇 |
2015年 | 319篇 |
2014年 | 322篇 |
2013年 | 1519篇 |
2012年 | 369篇 |
2011年 | 416篇 |
2010年 | 349篇 |
2009年 | 417篇 |
2008年 | 474篇 |
2007年 | 484篇 |
2006年 | 490篇 |
2005年 | 435篇 |
2004年 | 424篇 |
2003年 | 387篇 |
2002年 | 374篇 |
2001年 | 537篇 |
2000年 | 481篇 |
1999年 | 403篇 |
1998年 | 247篇 |
1997年 | 198篇 |
1996年 | 202篇 |
1995年 | 181篇 |
1994年 | 198篇 |
1993年 | 204篇 |
1992年 | 304篇 |
1991年 | 377篇 |
1990年 | 324篇 |
1989年 | 330篇 |
1988年 | 334篇 |
1987年 | 337篇 |
1986年 | 334篇 |
1985年 | 322篇 |
1984年 | 283篇 |
1983年 | 287篇 |
1982年 | 195篇 |
1981年 | 209篇 |
1980年 | 187篇 |
1979年 | 191篇 |
1978年 | 159篇 |
1977年 | 128篇 |
1976年 | 128篇 |
1975年 | 123篇 |
1974年 | 132篇 |
1973年 | 138篇 |
1972年 | 99篇 |
1969年 | 101篇 |
排序方式: 共有10000条查询结果,搜索用时 8 毫秒
121.
A mock jury study was conducted to test the hypothesis that perceptions of a witness can be biased by presumptuous cross-examination questions. A total of 105 subjects read a rape trial in which the cross-examiner asked a question that implied something negative about the reputation of either the victim or an expert. Within each condition, the question was met with either a denial, an admission, or an objection from the witness's attorney. Results indicated that although ratings of the victim's credibility were not affected by the presumptuous question, the expert's credibility was significantly diminished—even when the question had elicited a denial or a sustained objection. Conceptual and practical implications of these findings are discussed.This research was supported by funds provided to the first author by the Bronfman Science Center. 相似文献
122.
J B Kempton A Sirignano D H DeGaetano P J Yates W F Rowe 《Journal of forensic sciences》1992,37(6):1534-1540
The fingernail ridge patterns of a pair of identical twins were compared to each other, their parents, and an unrelated subject. The patterns of the twins' nails showed regions of strong similarity but were distinguishable from one another. Fewer similarities were found when comparing the nails to those of the parents and the unrelated control. The twins were shown to be monozygotic by means of DNA profiling. This therefore represents the first demonstration of unique fingernail ridge patterns in subjects shown conclusively to be identical twins. When the fingernail ridge patterns were examined with a scanning electron microscope, the backscattered electron (BEI) images were found to have superior contrast when compared to the secondary electron (SEI) images. 相似文献
123.
124.
An important national initiative in juvenile justice is Juvenile Offender Reentry (JOR). The renewed emphasis on offender reintegration has generated significant attention to juvenile justice practices, with the notable exception of juvenile confinement facilities. Juvenile detention and, to a lesser degree, juvenile corrections practitioners are involved but not invested in reentry, having made very few programmatic changes to accommodate JOR initiatives largely because these initiatives have been external to the institution and its staff. Yet, reentry is a powerful concept for juvenile facility practitioners, and the application of reentry principles could have a profound impact on daily operations. This article addresses a range of issues about investing juvenile institutions in reentry practices. Several reentry models are discussed along with their implications for daily operations and programs. 相似文献
125.
126.
德怀特&#;艾伦 《国家教育行政学院学报》2005,(10):7-9
目前,我们处在一个相互依赖和多元文化的全球社会。世界变了,高等教育却仍然没有出现任何实质性的变革。因此,我们需要对高等教育重新进行思考,我们需要全新的教育内容、途径以及步骤。教师必须学着将学生们自己的知识看成是教——学过程中一个非常重要的新资源,同时应该继续掌控学生在课堂的学习过程。我们有关学习的新的认识和当前实际的学习方式是互相矛盾的。对于真正的素质教育来说,培养更高层次的思考方法必须优先于实际知识的学习。与其他社会制度一样,高等教育也往往抵制变革。因此我们必须设计出新的机制,不断进行变革,使这些变革对于所有的教育机构、教职员工和学生来说都是很平常的,都是容易实现的。我提议,邀请大学和学院参与进来,重新定义中国的高等教育。批准参与的大学和学院都将收到一笔特殊基金,用于贯彻实施他们自己设计的独立的改革方案。这些方案都须是小型的、独立的,并且是不受传统的和官僚性的改革方案限制的。 相似文献
127.
All records from the Danish Medicolegal Council concerning drivers suspected for drug influences were examined for the 5 year period 1981-1985. 461 records were included, 62 women and 399 men. In 250 cases drugs from more than one of ten groups had been taken thus making 786 combinations of drug/driving. The major drug group was benzodiazepines, accounting for 65% of all drug intake. Opioids also contributed substantially, found in 38% of the cases. A traffic accident had occurred in 180 (39%) of the records. Drivers who had been taking antidepressives were involved in an accident in 67%, significantly above the mean. For benzodiazepines, the corresponding percentage was 43%, while for opioids it was only 23%, significantly below the mean. This striking difference has been demonstrated in most of the studies concerning drugs in traffic. It may support the hypothesis that opioids do not necessarily make driving dangerous, as do antidepressives, barbiturates and especially benzodiazepines. 相似文献
128.
In the current study the objective was to find to what extent a reliable determination of age at death is made possible by establishing the degree of aspartic acid racemization in the dentin of teeth. The results of the investigation of 46 teeth are in agreement with the values found by other authors. The method presented makes a reproducible and accurate estimation of age possible. We intend to elaborate and improve this promising method for determination of age at death. The relevant points are presented here. 相似文献
129.
130.
Quadratic pieces of fleece measuring 16 mm2 were soaked with 10 different blood-samples in the dilution steps of 1:1, 1:10, 1:100, 1:1000, respectively, and were tested in blood group typing and identification tests of forensic serology. The above spezified dilutions correspond with 5 microliters, 0.5 microliter, 0.05 microliter and 0.005 microliter of blood, respectively. The detection limit of the microspectrometric test for blood was the dilution 1:10, of the porphyrine test a dilution above 1:100, whereas the preliminary test for blood (peroxidase) succeeded always up to a dilution of 1:1000 and the species determination by the radial immunodiffusion test in agar gels succeeded in most cases op to a dilution of 1:1000. The detection limit of the anti-human globulin inhibition test was between the dilution steps 1:10 and 1:100 when non-titrated and undiluted anti-human globulin serum was used. Gc- and ABO-grouping were possible up to a dilution of 1:100 and were thus the most sensitive grouping systems. Phenotyping of the enzyme-systems and the Gm/Km-system usually required stains with considerably higher blood concentrations i.e. stains of undiluted blood. 相似文献