全文获取类型
收费全文 | 6153篇 |
免费 | 236篇 |
专业分类
各国政治 | 249篇 |
工人农民 | 268篇 |
世界政治 | 465篇 |
外交国际关系 | 317篇 |
法律 | 3764篇 |
中国共产党 | 1篇 |
中国政治 | 39篇 |
政治理论 | 1241篇 |
综合类 | 45篇 |
出版年
2023年 | 54篇 |
2022年 | 28篇 |
2021年 | 41篇 |
2020年 | 102篇 |
2019年 | 137篇 |
2018年 | 168篇 |
2017年 | 169篇 |
2016年 | 179篇 |
2015年 | 120篇 |
2014年 | 164篇 |
2013年 | 637篇 |
2012年 | 178篇 |
2011年 | 195篇 |
2010年 | 142篇 |
2009年 | 183篇 |
2008年 | 175篇 |
2007年 | 168篇 |
2006年 | 169篇 |
2005年 | 131篇 |
2004年 | 150篇 |
2003年 | 146篇 |
2002年 | 126篇 |
2001年 | 239篇 |
2000年 | 235篇 |
1999年 | 165篇 |
1998年 | 78篇 |
1997年 | 77篇 |
1996年 | 64篇 |
1995年 | 75篇 |
1994年 | 64篇 |
1993年 | 66篇 |
1992年 | 129篇 |
1991年 | 115篇 |
1990年 | 142篇 |
1989年 | 131篇 |
1988年 | 143篇 |
1987年 | 134篇 |
1986年 | 112篇 |
1985年 | 111篇 |
1984年 | 84篇 |
1983年 | 73篇 |
1982年 | 57篇 |
1981年 | 51篇 |
1980年 | 43篇 |
1979年 | 53篇 |
1978年 | 38篇 |
1976年 | 32篇 |
1975年 | 28篇 |
1974年 | 40篇 |
1973年 | 32篇 |
排序方式: 共有6389条查询结果,搜索用时 46 毫秒
911.
Travis AR Johnson LJ Milroy CM 《The American journal of forensic medicine and pathology》2007,28(4):314-318
Homicide-suicide forms a distinct form of homicide. An analysis of cases in the Yorkshire and Humberside region of England between 1991 and 2005 revealed 37 episodes with 42 victims. Previous studies have shown a high rate of use of firearms. Over the last 2 decades firearms legislation has become more restrictive. In this study all assailants were male, mean age 46.8 years. The commonest method of homicide was strangulation (36%) with 16% killed by firearms. This is a reduction compared with a previous study in the same region. All killers who shot their victims killed themselves with firearms. There were no multiple killings with firearms in this study and no stranger killings. Hanging was the commonest method of suicide. During the same period the use of firearms as a method of homicide increased in England and Wales with handguns, the most common weapon. Nationally, suicide after homicide has remained at a similar rate over the half century and is an uncommon phenomenon. Firearms use remains low in both homicide and homicide-suicide episodes in England, and further analysis is required to determine changes in patterns of killing. 相似文献
912.
Partner violence may have significant consequences on women's employment, yet limited information is available about how women cope on the job with perpetrators' tactics and the consequences of her coping methods on employment status. This article investigates whether there is an association between workplace disclosure of victimization and current employment status; and whether there is an association between receiving workplace support and current employment status among women who disclosed victimization circumstances to someone at work. Using a sample of partner victimized women who were employed within the past year (N = 485), cross-tabulation and ANOVA procedures were conducted to examine the differences between currently employed and unemployed women. Binary logistic regressions were conducted to examine whether disclosure and receiving workplace support were significantly associated with current employment. Results indicate that disclosure and workplace support are associated with employment. Implications for clinical practice, workplace policies, and future research are discussed. 相似文献
913.
In general research suggests partner violence has a negative impact on women's employment. However, there has been limited examination of partner stalking and consequences for employment. The purpose of this study was to examine partner stalking and employment consequences among two samples of women. One sample was women who had obtained a protective order against a violent partner and had worked in the prior year (n = 482), about one half of these women were stalked by their violent partner and one half were not. The second study examined qualitative information from women recently stalked (n = 62) by a violent partner. Results from both studies suggest that women who were stalked by a violent partner were significantly more susceptible to on-the-job harassment and problems. Also, women reported that stalking by a partner interfered in their work through on-the-job harassment, work disruption, and job performance problems. Implications for policy and research are discussed. 相似文献
914.
This research investigates low religiosity as a predictor of violent victimization. The theoretical framework the authors present here posits that religiosity should help structure daily activities in such a way as to (a) limit exposure to offenders by encouraging contact with peers who are less deviant, (b) lessen one's target suitability by inhibiting grievance-causing delinquent activity, and (c) enhance guardianship by fostering stronger bonds with parents and school. Thus, although researchers expect religion to be a bivariate predictor of violent victimization, its influence should be indirect. The authors investigate these claims using two waves from the public-use version of the National Longitudinal Study of Adolescent Health (Add Health). The results indicate that religiosity is a correlate of violent victimization. Consistent with these theoretical claims, the effect of religiosity is not direct, but instead occurs indirectly primarily through its influence on self-reported delinquency and peer deviance. 相似文献
915.
Cadenas AM Regueiro M Gayden T Singh N Zhivotovsky LA Underhill PA Herrera RJ 《Forensic science international》2007,166(2-3):155-163
Several commercial PCR multiplex kits incorporate the amelogenin locus for the purpose of human gender identification. Consequently, erroneous results in the electropherogram profile of this locus can carry important forensic implications. In this study, dropout of the amelogenin Y allele was detected in 5 out of 77 phenotypically normal Kathmandu males using the AmpFlSTR Identifiler kit. A battery of male-specific markers including SNPs, STRs, STSs, and a minisatellite were amplified for the five amelogenin null samples in order to delineate the breakpoints of the deletions as well as assess the overall integrity of the Y-chromosome. This study represents the first to examine the haplogroup affiliation of the AMGY deletions. The analyses performed suggest a single origin for the five deletions as indicated by their allocation to a specific Y-haplogroup (J2b2-M241), related Y-STR haplotypes and identical regional localization of breakpoints. The age estimated from the microsatellite variation for the amelogenin deletions (if they are associated by descent) is approximately 6.5+/-3.3 ky, younger than the previously reported related age of the M241 haplogroup representatives (13-14 ky). Our data in combination with previous publications suggest a concentration of afflicted individuals in the Indian subcontinent, possibly as a result of common ancestry. The elevated incidence of the amelogenin dropout in these populations accentuates the need to utilize other loci for gender determination in order to obtain an accurate set of inclusion criteria in forensic casework. 相似文献
916.
Dennis T. Avery 《Society》2007,44(6):137-143
High-yield farming—more agricultural output per acre of farmland—has been a boon to mankind and to nature. If today’s agricultural
efficiency was the same as in the 1950s, the world would need three times the cropland to produce today’s food supply. That
would mean that 15-16 million mi2 of forest would have been destroyed—all the global forest area available today. Rising population and increased affluence
will require a tripling of agricultural efficiency in the next 50 years if we are to protect wildlife at the same time. More
investment in agricultural research and education will be required, but this is what produced the previous green revolution.
相似文献
Dennis T. AveryEmail: |
917.
In this article, we model the effect of foreign policy attitudes on both vote choice and casualty tolerance, using survey
data collected during the 2004 election. We show that prospective judgments of the likelihood of success in Iraq and retrospective
judgments of whether the war in Iraq was right are significant determinants of both vote choice and casualty tolerance. The
prospective judgment of success is key in predicting casualty tolerance, while retrospective judgment of whether the war was
right takes precedence in determining vote choice. In addition, there is an important interaction between the two variables,
so the effect of one is conditional on the value of the other. We believe this is compelling evidence that foreign policy
matters, and that it matters in reasonable ways.
相似文献
Jason ReiflerEmail: |
918.
Stephen T. Mockabee 《Political Behavior》2007,29(2):221-248
In this study I adopt a view of cultural conflict that extends beyond the usual set of controversial “moral” issues like abortion
and gay rights to include symbolic issues related to patriotism and group affect. Using a set of survey items asking about
respondents’ preferences in child-rearing, I create a measure of individuals’ orientations toward authority that proves to
be a potent predictor of attitudes on cultural issues, affect toward social groups, party identification, and vote choice.
This authority effect persists even in the presence of extensive multivariate controls for demographic and religious variables.
I find that both authority measures and religion measures shape political attitudes, suggesting the need for a multi-faceted approach to understanding cultural conflict.
相似文献
Stephen T. MockabeeEmail: |
919.
920.
Prediction markets have drawn considerable attention in recent years as a tool for forecasting elections. But how accurate are they? Do they outperform the polls, as some scholars argue? Do prices in election markets carry information beyond the horserace in the latest polls? This paper assesses the accuracy of US presidential election betting markets in years before and after opinion polling was introduced. Our results are provocative. First, we find that market prices are far better predictors in the period without polls than when polls were available. Second, we find that market prices of the pre-poll era predicted elections almost on par with polls following the introduction of scientific polling. Finally, when we have both market prices and polls, prices add nothing to election prediction beyond polls. To be sure, early election markets were (surprisingly) good at extracting campaign information without scientific polling to guide them. For more recent markets, candidate prices largely follow the polls. 相似文献