首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   513篇
  免费   31篇
各国政治   17篇
工人农民   79篇
世界政治   46篇
外交国际关系   28篇
法律   243篇
中国政治   2篇
政治理论   126篇
综合类   3篇
  2022年   2篇
  2021年   4篇
  2020年   9篇
  2019年   24篇
  2018年   17篇
  2017年   25篇
  2016年   27篇
  2015年   14篇
  2014年   20篇
  2013年   98篇
  2012年   18篇
  2011年   20篇
  2010年   19篇
  2009年   10篇
  2008年   13篇
  2007年   10篇
  2006年   16篇
  2005年   23篇
  2004年   16篇
  2003年   22篇
  2002年   18篇
  2001年   6篇
  2000年   6篇
  1999年   13篇
  1997年   7篇
  1996年   9篇
  1995年   4篇
  1993年   5篇
  1992年   3篇
  1991年   2篇
  1990年   3篇
  1988年   2篇
  1987年   9篇
  1986年   5篇
  1985年   4篇
  1984年   2篇
  1983年   3篇
  1982年   2篇
  1981年   3篇
  1980年   2篇
  1979年   3篇
  1977年   4篇
  1976年   3篇
  1974年   2篇
  1972年   1篇
  1971年   2篇
  1970年   2篇
  1969年   2篇
  1968年   3篇
  1967年   2篇
排序方式: 共有544条查询结果,搜索用时 31 毫秒
141.
142.
Abstract

In a segment of his recent television series on economics, “The Age of Uncertainty,” John Kenneth Galbraith makes a number of critical remarks about multinational corporations. However, towards the end of the program, the screen is suddenly filled with pictures of bustling Singapore, and Galbraith comments that, whatever else can be said of them, the MNCs have played a major role in bringing economic development and employment to this and many other parts of the world. The implication is that the employment and economic growth fostered by the large corporations in Asian countries like Singapore are—by definition—changes for the better.  相似文献   
143.
144.
145.
146.
Can the use of DNA fingerprinting reduce the frequency of rape? Feminist technology assessment is used here to evaluate this new forensic technique, which distinguishes between persons by differences in DNA sequences in variable regions of their chromosomes. Although everyone's DNA pattern is unique, the statistical degrees of difference among sub-populations within ethnic and racial groups are not fully known. The technique is beset by laboratory errors, difficulties in interpretation, and lack of quality control. Policy analysts may also be troubled by the politics behind the harassment of expert witnesses, the rejection by journals of critical articles, the influence of the FBI on federal assessment reports, and the inequitable distribution of costs and benefits. The cases of British rapist-murderer Colin Pitchfork, San Diego rape victim Alicia Wade, and eight exonerated convicts demonstrate how the technique can clear probably innocent rape suspects, but they illustrate little rape-prevention capacity. If DNA testing accurately exonerates a suspect, then the police may continue searching; yet, a test with greater power to exonerate may let criminals escape and may lower the credibility of rape victims' eyewitness testimony. Furthermore, any accurate DNA typing might foster behavior to avoid apprehension or the reduction of sentences through plea-bargaining, thus having a negative effect on deterrence. Despite clear benefit to individual women in specific circumstances, this technique is likely, overall, to be disadvantageous to women. The rape victim identifies her assailant in a police line-up again before the jury in court. He is convicted and put behind bars. Some years later he hears about DNA testing and convinces his lawyer to get tests on the semen that was fund on the victim's clothes. when results show that he could not have been the rapist, he is released from prison. Yet the victim remains convinced that he was the man who attacked her and lives in fear that will find her and rape her again.1  相似文献   
147.
An alleged assault was reported by a 42-year-old female, with initial medical examination revealing an apparent bite mark on the right buttock. Odontological examination, including visual assessment, full history and photographs showed that the injury did not meet the class characteristics of a human bite. Subsequent digital overlay production showed that the injury pattern was consistent with a corrugated bottle top. This case highlights the need for careful assessment of injuries alleged to be caused by human teeth.  相似文献   
148.
The stable isotope ratios of a seized pathogen culture could potentially reveal information about the environment in which the agent was produced. In this paper we describe general relationships between stable isotopes of carbon, nitrogen, and hydrogen in bacteriological culture media and spores of Bacillus subtilis, an endospore-forming soil bacterium. In numerous media that varied both in nutrient composition and water stable isotope ratios, medium to spore enrichment in carbon isotopes was 0.3 +/- 2.0% per thousand (parts per thousand), and in nitrogen, 4.5 +/- 0.7% per thousand. We achieved mass balance for the contribution of hydrogen isotopes from nutrients (70%) and water (30%) to spores in independent experiments by varying the isotope ratios of nutrients or water. A model was derived for predicting the isotope ratio values of spores from those in nutrients and water.  相似文献   
149.
150.
The incidence of alcohol and drugs in fatally injured drivers were determined in three Australian states; Victoria (VIC), New South Wales (NSW) and Western Australia (WA) for the period of 1990-1999. A total of 3398 driver fatalities were investigated which included 2609 car drivers, 650 motorcyclists and 139 truck drivers. Alcohol at or over 0.05 g/100ml (%) was present in 29.1% of all drivers. The highest prevalence was in car drivers (30.3%) and the lowest in truckers (8.6%). WA had the highest rate of alcohol presence of the three states (35.8%). Almost 10% of the cases involved both alcohol and drugs. Drugs (other than alcohol) were present in 26.7% of cases and psychotropic drugs in 23.5%. These drugs comprised cannabis (13.5%), opioids (4.9%), stimulants (4.1%), benzodiazepines (4.1%) and other psychotropic drugs (2.7%). 8.5% of all drivers tested positive for Delta(9)-tetrahydrocannabinol (THC) and the balance of cannabis positive drivers were positive to only the 11-nor-Delta(9)-tetrahydrocannabinol-9-carboxylic acid (carboxy-THC) metabolite. The range of THC blood concentrations in drivers was 0.1-228 ng/ml, with a median of 9 ng/ml. Opioids consisted mainly of morphine (n=84), codeine (n=89) and methadone (n=33), while stimulants consisted mainly of methamphetamine (n=51), MDMA (n=6), cocaine (n=5), and the ephedrines (n=61). The prevalence of drugs increased over the decade, particularly cannabis and opioids, while alcohol decreased. Cannabis had a larger prevalence in motorcyclists (22.2%), whereas stimulants had a much larger presence in truckers (23%).  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号