全文获取类型
收费全文 | 26099篇 |
免费 | 1506篇 |
专业分类
各国政治 | 1066篇 |
工人农民 | 1123篇 |
世界政治 | 1873篇 |
外交国际关系 | 807篇 |
法律 | 17784篇 |
中国共产党 | 3篇 |
中国政治 | 181篇 |
政治理论 | 4601篇 |
综合类 | 167篇 |
出版年
2021年 | 122篇 |
2020年 | 531篇 |
2019年 | 582篇 |
2018年 | 748篇 |
2017年 | 794篇 |
2016年 | 854篇 |
2015年 | 701篇 |
2014年 | 741篇 |
2013年 | 2652篇 |
2012年 | 686篇 |
2011年 | 782篇 |
2010年 | 832篇 |
2009年 | 839篇 |
2008年 | 726篇 |
2007年 | 704篇 |
2006年 | 798篇 |
2005年 | 637篇 |
2004年 | 640篇 |
2003年 | 555篇 |
2002年 | 580篇 |
2001年 | 976篇 |
2000年 | 861篇 |
1999年 | 704篇 |
1998年 | 368篇 |
1997年 | 286篇 |
1996年 | 278篇 |
1995年 | 312篇 |
1994年 | 293篇 |
1993年 | 277篇 |
1992年 | 482篇 |
1991年 | 500篇 |
1990年 | 472篇 |
1989年 | 468篇 |
1988年 | 473篇 |
1987年 | 408篇 |
1986年 | 479篇 |
1985年 | 485篇 |
1984年 | 427篇 |
1983年 | 371篇 |
1982年 | 288篇 |
1981年 | 257篇 |
1980年 | 242篇 |
1979年 | 337篇 |
1978年 | 191篇 |
1977年 | 159篇 |
1976年 | 135篇 |
1975年 | 155篇 |
1974年 | 182篇 |
1973年 | 137篇 |
1972年 | 121篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
81.
This study used data from 299 police officers from 12 municipal police departments across the state of Virginia to determine
the relationship between education and police performance. Performance was measured by supervisor evaluations of each officer's
overall performance, communication skills, public relations skills, report writing skills, response to new training, decision
making ability, and commitment to the police department. Significant correlations were found between education and most measures
of performance. Most importantly, the results show a significant correlation between overall performance and education (r=24,
p.<001). The only variables not proving to be significantly related to education were objective measures of the volume of
arrests, number of times the officer required discipline, and number of accidents. Interestingly, the benefits of a college
education do not become apparent until police officers gain experience. In addition, police, officers with only a high school
diploma decreased in overall performance after five years of experience. 相似文献
82.
83.
84.
85.
86.
87.
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
88.
One of the remedies sought by state and local officials for the growing burden of federal mandates is a mandate reimbursement law. A major purpose of mandate reimbursement is to deter Congress from imposing excessive costs on state and local governments by making it fully accountable for its actions. The paper begins by extending the economic theory of grants to mandates and reimbursed mandates. It goes on to assess the benefits and costs of mandate reimbursement, and to distinguish mandates that should be reimbursed, should a reimbursement program prove desirable, from those that should not. Then, using the economic theory of grants and mandates, the paper compares reimbursed mandates with two alternatives for accomplishing the same objective, compensating grants and procedural rules. It concludes that the latter are more promising than mandate reimbursement. 相似文献
89.
William M. Rees 《The Modern law review》1987,50(1):100-105
90.