全文获取类型
收费全文 | 737篇 |
免费 | 23篇 |
专业分类
各国政治 | 20篇 |
工人农民 | 14篇 |
世界政治 | 73篇 |
外交国际关系 | 51篇 |
法律 | 270篇 |
中国政治 | 1篇 |
政治理论 | 287篇 |
综合类 | 44篇 |
出版年
2020年 | 15篇 |
2019年 | 5篇 |
2018年 | 6篇 |
2017年 | 13篇 |
2016年 | 12篇 |
2015年 | 10篇 |
2014年 | 12篇 |
2013年 | 122篇 |
2012年 | 22篇 |
2011年 | 11篇 |
2010年 | 13篇 |
2009年 | 17篇 |
2008年 | 23篇 |
2007年 | 22篇 |
2006年 | 23篇 |
2005年 | 25篇 |
2004年 | 20篇 |
2003年 | 18篇 |
2002年 | 24篇 |
2001年 | 11篇 |
2000年 | 12篇 |
1999年 | 11篇 |
1998年 | 22篇 |
1997年 | 14篇 |
1996年 | 13篇 |
1995年 | 14篇 |
1994年 | 9篇 |
1993年 | 12篇 |
1992年 | 10篇 |
1991年 | 6篇 |
1990年 | 15篇 |
1989年 | 16篇 |
1988年 | 16篇 |
1987年 | 16篇 |
1986年 | 9篇 |
1985年 | 14篇 |
1984年 | 13篇 |
1983年 | 17篇 |
1982年 | 12篇 |
1981年 | 9篇 |
1980年 | 10篇 |
1978年 | 4篇 |
1977年 | 6篇 |
1976年 | 5篇 |
1975年 | 7篇 |
1974年 | 4篇 |
1973年 | 6篇 |
1972年 | 6篇 |
1968年 | 3篇 |
1967年 | 3篇 |
排序方式: 共有760条查询结果,搜索用时 0 毫秒
751.
Donald T. Cundy 《政治交往》2013,30(1):41-59
Political observers have extensively documented the national media's focus on committee and party leaders. Legislators' local coverage, in contrast, remains largely unexplored and unexplained. This article examines 40 local newspapers to explore how these factors may influence legislators' local newspaper coverage. We find that local newspapers do not provide more coverage to congressional leaders and that independent papers write more frequently than chain-owned competitors about the local House delegation. Additionally, the extent to which a legislator's district geographically overlaps with the newspaper's market has a strong effect on legislators' mentions. 相似文献
752.
Field experimentation is a promising but seldom used method for studying the effects of media messages on political attitudes and behavior. The practical challenges of conducting media experiments in real-world settings often come down to securing cooperation from research partners, such as political campaigns. To do so, researchers must be prepared to adapt their experimental designs to satisfy the constraints imposed by research partners and the media environment in which they operate. This article provides an overview of some alternative field experimental designs that allow researchers to maintain the advantages of random assignment while addressing practical considerations. Examples are drawn from the growing field experimental literature examining the effects of television, radio, and online communication. 相似文献
753.
Abstract In the absence of physical evidence, investigators must often rely on offence behaviours when determining whether several crimes are linked to a common offender. A variety of factors can potentially influence the degree to which accurate linking is possible, including the similarity coefficient used to assess across-crime similarity. The current study examines the performance of two similarity coefficients that have recently been compared to one another, Jaccard's coefficient (J) and the taxonomic similarity index (Δs), using samples of two crime types, serial homicide (N=237) and serial burglary (N=210). In contrast to previous research, the results indicate that Δs does not significantly outperform J with respect to linking accuracy. In addition, both coefficients lead to higher levels of linking accuracy in cases of serial homicide compared to serial burglary. Potential explanations for these findings are presented and their implications are discussed. 相似文献
754.
Donald G. Hagman 《Planning & Environmental Law》2013,65(5):8-9
The California courts have a reputation for sustaining local land-use controls where no other state court would do so. The reputation was certainly deserved prior to 1966, when courts still presumed that necessary findings to support a variance had been made and that the findings were properly supported. Prior to that time no appellate court had ever reversed the grant of a variance. This was changed, however, by Cow Hollow Improvement Club v. Dibene, 245 Cal. App. 2d 160;53 Cal Rptr. 610 (1966) and Broadway, Laguna, Vallejo Assoc. v. Board of Permit Appeals, 66 Cal.2d 767, 59 Cal. Rptr. 146,427 P.2d 810 (1967). Thereafter, where the ordinance required specific findings, findings on each of the standards for a variance had to be made and each had to be supported by substantial evidence. This standard was extended to the granting of conditional use permits and other major work of the zoning board of appeals in Stoddard v. Edelman, 4 Cal. App. 3d 544, 84 Cal. Rptr. 443 (1970). Cautious attorneys who recommended that such standards be applied even if not specified in the ordinance were also vindicated recently by Topanga Assoc. for a Scenic Community v. Los Angeles, 113 Cal.Rptr. 836 (1974). 相似文献
755.
Donald G. Hagman 《Planning & Environmental Law》2013,65(11):11-20
“Judicial Decisions” are abstracts of federal and state court decisions addressing issues of importance to the land use lawyer and planner, such as zoning, inverse condemnation, growth management, signs and billboards, vested rights, and many more. 相似文献
756.
Field experiments and regression discontinuity designs test whether voting is habit forming by examining whether a random shock to turnout in one election affects participation in subsequent elections. We contribute to this literature by offering a vast amount of new statistical evidence on the long‐term consequences of random and quasi‐random inducements to vote. The behavior of millions of voters confirms the persistence of voter turnout and calls attention to theoretically meaningful nuances in the development and expression of voting habits. We suggest that individuals become habituated to voting in particular types of elections. The degree of persistence appears to vary by electoral context and by the attributes of those who comply with an initial inducement to vote. 相似文献
757.
Tayfur Smeyra N. Prior Susan Roy Anusua Singh Maciver Donald Forsyth Kirsty Fitzpatrick Linda Irvine 《Journal of youth and adolescence》2022,51(7):1397-1408
Journal of Youth and Adolescence - Transition to adulthood can be a challenging developmental task for adolescents with common mental health problems and is linked to adverse outcomes such as... 相似文献
758.
Katherine A. Roberts Ph.D. Donald J. Johnson M.S. Sherillelynn Cruz M.S. Heather Simpson M.S. Alan Safer Ph.D. 《Journal of forensic sciences》2014,59(4):909-918
This study examined whether flossing the teeth is a more effective collection method in recovering spermatozoa than conventional swabbing techniques. It was hypothesized that inclusion of flossing as a collection method would extend the recovery of spermatozoa to longer postcoital intervals (PCIs). Eighteen individuals provided 174 oral cavity samples. Successful recovery of spermatozoa was assessed with respect to the collection method and reported activity in the oral cavity during the PCI. Samples were subjected to a differential extraction procedure prior to microscopic evaluation of the extracted pellet. The results indicate that swabbing is more effective than flossing when the PCI falls within 1.5–12 h. However, spermatozoa were recovered from seven floss samples where the corresponding swabs gave negative results. When combining the results from the two collection methods, the percentage of subjects from whom spermatozoa are recovered increases for each PCI beyond the 0‐h interval. 相似文献
759.
760.
James E. Sutton Paul E. Bellair Brian R. Kowalski Ryan Light Donald T. Hutcherson 《Journal of Quantitative Criminology》2011,27(2):173-171
Data collection using the life event calendar method is growing, but reliability is not well established. We examine test–retest
reliability of monthly self-reports of criminal behavior collected using a life event calendar from a random sample of minimum
and medium security prisoners. Tabular analysis indicates substantial agreement between self-reports of drug dealing, property,
and violent crime during a baseline interview (test) and a follow-up (retest) approximately 3 weeks later. Hierarchical analysis
reveals that criminal activity reported during the initial test is strongly associated with responses given in the retest,
and that the relationship varies only by the lag in days between the initial interview and the retest. Analysis of validity
reveals that self-reported incarceration history is strongly predictive of official incarceration history although we were
unable to address whether subjects could correctly identify the months they were incarcerated. African Americans and older
subjects provide more valid responses but in practical terms the differences in validity are not large. 相似文献