全文获取类型
收费全文 | 989篇 |
免费 | 34篇 |
专业分类
各国政治 | 39篇 |
工人农民 | 44篇 |
世界政治 | 78篇 |
外交国际关系 | 39篇 |
法律 | 477篇 |
中国政治 | 10篇 |
政治理论 | 316篇 |
综合类 | 20篇 |
出版年
2023年 | 6篇 |
2022年 | 6篇 |
2020年 | 19篇 |
2019年 | 15篇 |
2018年 | 22篇 |
2017年 | 28篇 |
2016年 | 33篇 |
2015年 | 17篇 |
2014年 | 26篇 |
2013年 | 165篇 |
2012年 | 33篇 |
2011年 | 38篇 |
2010年 | 30篇 |
2009年 | 35篇 |
2008年 | 46篇 |
2007年 | 24篇 |
2006年 | 40篇 |
2005年 | 26篇 |
2004年 | 24篇 |
2003年 | 25篇 |
2002年 | 26篇 |
2001年 | 21篇 |
2000年 | 18篇 |
1999年 | 19篇 |
1998年 | 15篇 |
1997年 | 13篇 |
1996年 | 13篇 |
1995年 | 12篇 |
1994年 | 14篇 |
1993年 | 15篇 |
1992年 | 17篇 |
1991年 | 10篇 |
1990年 | 13篇 |
1989年 | 12篇 |
1988年 | 7篇 |
1987年 | 8篇 |
1986年 | 11篇 |
1985年 | 12篇 |
1984年 | 14篇 |
1983年 | 10篇 |
1982年 | 11篇 |
1981年 | 9篇 |
1980年 | 9篇 |
1979年 | 6篇 |
1977年 | 7篇 |
1975年 | 4篇 |
1973年 | 5篇 |
1972年 | 5篇 |
1971年 | 4篇 |
1967年 | 6篇 |
排序方式: 共有1023条查询结果,搜索用时 15 毫秒
61.
Armstrong A Babrauskas V Holmes DL Martin C Powell R Riggs S Young LD 《Journal of forensic sciences》2004,49(4):741-748
Tests have determined that boots or shoes of individuals at a fire scene do not transport sufficient contaminants ("tracking") through the fire scene to produce a positive laboratory result for the presence of gasoline in a fire scene that was not present at the time of the fire. Questions about the validity of forensic laboratory results have been raised on the basis that low-level gasoline residues detected in the laboratory samples could have been the result of transporting the residue by footwear contaminated from the fire scene ("tracking"). The data collected in this study establish that "tracking" does not lead to false-positive laboratory results. Canines trained and experienced in the detection of trace ignitable liquid residues were also utilized in this study. The canine results confirmed that properly trained canines show a higher sensitivity than do standard ASTM laboratory techniques for fire debris analysis. In a few cases, canines responded to contamination, but laboratory testing (which is the definitive indicator) did not produce positive results. 相似文献
62.
Some previous research indicates that confidence affects the accuracy of probabilistic clinical ratings of risk for violence among civil psychiatric inpatients. The current study investigated the impact of confidence on actuarial and structured professional risk assessments, in a forensic psychiatric population, using community violence as the outcome criteria. Raters completed the HCR-20 violence risk assessment scheme for a sample of 100 forensic psychiatric patients. Results showed that accuracy of both actuarial judgments (HCR-20 total scores) and structured professional judgments (of low, moderate, and high risk) were substantially more accurate when raters were more confident about their judgments. Findings suggest that confidence of ratings should be studied as a potentially important mediator of structured professional and actuarial risk judgments. 相似文献
63.
Journal of Youth and Adolescence - 相似文献
64.
65.
66.
67.
68.
Negotiation Journal - 相似文献
69.
70.