全文获取类型
收费全文 | 246篇 |
免费 | 9篇 |
专业分类
各国政治 | 10篇 |
工人农民 | 15篇 |
世界政治 | 22篇 |
外交国际关系 | 14篇 |
法律 | 126篇 |
中国政治 | 2篇 |
政治理论 | 66篇 |
出版年
2020年 | 2篇 |
2019年 | 6篇 |
2018年 | 10篇 |
2017年 | 7篇 |
2016年 | 8篇 |
2015年 | 5篇 |
2014年 | 9篇 |
2013年 | 31篇 |
2012年 | 5篇 |
2011年 | 9篇 |
2010年 | 5篇 |
2009年 | 6篇 |
2008年 | 7篇 |
2007年 | 3篇 |
2006年 | 7篇 |
2005年 | 7篇 |
2004年 | 11篇 |
2003年 | 6篇 |
2001年 | 9篇 |
2000年 | 8篇 |
1999年 | 5篇 |
1998年 | 4篇 |
1997年 | 4篇 |
1996年 | 4篇 |
1995年 | 1篇 |
1994年 | 6篇 |
1993年 | 6篇 |
1992年 | 7篇 |
1991年 | 6篇 |
1990年 | 3篇 |
1989年 | 1篇 |
1988年 | 2篇 |
1987年 | 1篇 |
1986年 | 4篇 |
1985年 | 4篇 |
1984年 | 5篇 |
1983年 | 4篇 |
1982年 | 6篇 |
1981年 | 3篇 |
1980年 | 2篇 |
1979年 | 2篇 |
1976年 | 1篇 |
1975年 | 1篇 |
1972年 | 1篇 |
1971年 | 2篇 |
1970年 | 2篇 |
1969年 | 1篇 |
1968年 | 2篇 |
1967年 | 1篇 |
1956年 | 1篇 |
排序方式: 共有255条查询结果,搜索用时 0 毫秒
21.
Student peer aggression has become an issue of considerable concern in schools and their surrounding communities. While a considerable volume of research and writing now exists on how this problem might be best managed, little has been written concerning the place of law in the management process. Nonetheless, in view of the long term effects of student peer aggression on both aggressors and aggressed, it behoves school administrators and teachers to have a sound awareness of the many issues associated with this form of behaviour. In particular it is advisable for staff to have a sound appreciation of the potential legal repercussions that can be the result of a failure to exercise an appropriate level of the duty of care owed to students in relation to peer aggression. This article examines recent research into student peer aggression in Australia and elsewhere. Reasons advanced to explain this form of behaviour are discussed, the characteristics of aggressors and aggressed examined, and consequences of student peer aggression explored. The legal remedies available are identified and discussed and measures needed to manage the problem are suggested. 相似文献
22.
23.
A new method for determination of lysergic acid diethylamide (LSD) in body fluids by high-performance liquid chromatography and fluorescence detection was developed based on previously published methods. The new method is suitable for confirmation of samples tested positive by immunoassay, avoiding loss of LSD by absorption to surfaces. The reduced loss of LSD results in improved sensitivity. This is achieved by adding ethylene glycol to the samples, which cover glass surfaces. This principle can similarly be used to improve analysis of other drugs. Body fluids for analysis included urine and whole blood. An internal standard was applied for quantification of LSD. The new method offers satisfying precision data and has a detection limit of less than 0.05 ng/nL. 相似文献
24.
25.
26.
Jennifer Langhinricbsen-Rohling Candice M. Monson Kathryn A. Meyer Jeffrey Caster Audrey Sanders 《Journal of family violence》1998,13(3):243-261
The purpose of the current study was to determine if college students' retrospective reports of family-of-origin physical abuse were related to their current reports of depressed symptomology, hopelessness, and suicidal and life-threatening behavior. Consistent with hypotheses, abuse by a parent (physical and psychological) and physical perpetration toward a parent were associated with increased rates of suicidal and life-threatening behavior. Gender of the parent was also shown to be important as symptoms of depression were related to mother but not father victimization and perpetration. Contrary to expectation, witnessing parental spouse abuse was not associated with young adults' current symptoms of depression, hopelessness, and suicidal and life-threatening behavior. These findings were interpreted with regard to the intergenerational transmission of violence theory. 相似文献
27.
Characteristics of Backspatter on the Firearm and Shooting Hand—An Experimental Analysis of Close‐range Gunshots 下载免费PDF全文
Sebastian N. Kunz M.D. Ph.D. Herwig Brandtner M.D. Harald J. Meyer Ph.D. 《Journal of forensic sciences》2015,60(1):166-170
Contact and close‐range gunshot injuries can produce bloodstains on the shooting hand and weapon. In this study, backspatter was analyzed in experimental horizontal pistol shots into blood‐filled sponges. The shooting distances were set between 0 and 45 cm. With increasing shooting distance, there was a significant decrease in the degree of backspatter. Microspatter could be detected on the weapon and shooting hand up to a shooting distance of 40 cm. They were predominantly located on thumb and index finger as well as the radial dorsal aspects of the hand. Fine spray of microspatter combined with elongated droplets in the shape of exclamation marks was found at contact and 2‐cm distance shots. An angular calculation based on the shape of the bloodstains was possible up to a shooting distance of 2 cm. No bloodstains were detected beyond 45 cm. 相似文献
28.
29.
30.