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   13030篇
  免费   707篇
各国政治   764篇
工人农民   397篇
世界政治   1071篇
外交国际关系   673篇
法律   7409篇
中国政治   83篇
政治理论   3230篇
综合类   110篇
  2023年   71篇
  2021年   86篇
  2020年   248篇
  2019年   310篇
  2018年   336篇
  2017年   394篇
  2016年   406篇
  2015年   306篇
  2014年   342篇
  2013年   1745篇
  2012年   317篇
  2011年   333篇
  2010年   367篇
  2009年   395篇
  2008年   317篇
  2007年   368篇
  2006年   353篇
  2005年   384篇
  2004年   402篇
  2003年   365篇
  2002年   358篇
  2001年   428篇
  2000年   368篇
  1999年   323篇
  1998年   188篇
  1997年   152篇
  1996年   156篇
  1995年   167篇
  1994年   177篇
  1993年   164篇
  1992年   232篇
  1991年   240篇
  1990年   205篇
  1989年   221篇
  1988年   187篇
  1987年   200篇
  1986年   191篇
  1985年   195篇
  1984年   156篇
  1983年   174篇
  1982年   126篇
  1981年   132篇
  1980年   92篇
  1979年   146篇
  1978年   102篇
  1977年   89篇
  1976年   80篇
  1975年   58篇
  1974年   68篇
  1973年   70篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
901.
Because of difficulties collecting sales taxes on Internet sales, several states have engaged in an effort (the Streamlined Sales Tax Project, SSTP) to simplify their sales tax systems. One hope among SSTP proponents is that a simplified system will result in Internet vendors voluntarily collecting the sales tax. We address two issues:
  • ? Will states adopt the extensive reforms proposed by the SSTP?
  • ? Will vendors voluntarily collect the sales tax?
We argue that states are unlikely to adopt extensive reforms, but if they did, many vendors would voluntarily collect sales taxes.  相似文献   
902.
This study reports an analysis of Bartol's (1991) Immaturity Index and Hargrave and associates' (1988) Aggressiveness Index as a measure of police conduct. The correlations between the supervisory ratings and the Immaturity and Aggressiveness indices were examined for 1020 law enforcement officers. The results showed that Immaturity Index was related to termination for failure to complete training and insubordination. The Aggressiveness Index was related to a termination for failure to complete training and several other problematic police behaviors, but was not found to be specifically linked with acts of aggression. Implications for using these two indices in law enforcement selection are discussed. Authors' Note: Cary Rostow, Ph.D. is president of Matrix, Inc., Baton Rouge, Louisiana, and is in private practice in Baton Rouge. Robert Davis, Ph.D., is executive vice-president and director of science, research, and development for Matrix, Inc., and has a private practice in Baton Rouge. James B. Pinston, Ph.D., is a clinical neuropsychologist within the department of neurology at the Louisiana State University Health Sciences Center and School of Medicine in Shreveport, Louisiana. Dennis R. Combs, Ph.D., is an assistant professor of psychology at the University of Tulsa. Dennis R. Dixon, M.A., is currently a doctoral student at Louisiana State University.  相似文献   
903.
Degradation of human DNA extracted from forensic stains is, in most cases, the result of a natural process due to the exposure of the stain samples to the environment. Experiences with degraded DNA from casework samples show that every sample may exhibit different properties in this respect, and that it is difficult to systematically assess the performance of routinely used typing systems for the analysis of degraded DNA samples. Using a batch of artificially degraded DNA with an average fragment size of approx. 200 bp a collaborative exercise was carried out among 38 forensic laboratories from 17 European countries. The results were assessed according to correct allele detection, peak height and balance as well as the occurrence of artefacts. A number of common problems were identified based on these results such as strong peak imbalance in heterozygous genotypes for the larger short tandem repeat (STR) fragments after increased PCR cycle numbers, artefact signals and allelic drop-out. Based on the observations, strategies are discussed to overcome these problems. The strategies include careful balancing of the amount of template DNA and the PCR cycle numbers, the reaction volume and the amount of Taq polymerase. Furthermore, a careful evaluation of the results of the fragment analysis and of automated allele calling is necessary to identify the correct alleles and avoid artefacts.  相似文献   
904.
This article proposes that we move beyond posttraumatic stress disorder (PTSD) in our conceptualization of traumatic stress responses of victimized women exposed to serial forms of unrelenting violence, such as intimate partner violence and stalking. It is argued that the traditional PTSD framework is ill fitting in the context of some forms of violence against women (VAW), and these limits have consequences for developing appropriate interventions for some victimized women. The article further suggests going beyond PTSD by developing a more nuanced understanding of the ways in which PTSD and other mental health symptoms contribute to the vast array of deleterious personal, societal, and economic costs of VAW.  相似文献   
905.
Risk factors associated with the likelihood of being sexually victimized by a stranger or friend/acquaintance since being on the street was examined among 372 homeless and runaway youth. Young people were interviewed on the streets and in shelters by outreach workers using a systematic sampling strategy. Youth who engaged in more high-risk behaviors were expected to be at greater risk for sexual victimization by both known and unknown assailants. Results indicated that for females, running from home for the first time at an earlier age was associated with sexual victimization by both a stranger and friend/acquaintance. However, engaging in deviant subsistence strategies, survival sex, and grooming predicted being sexually victimized by a friend/acquaintance. For males, survival sex and grooming predicted stranger sexual victimization, whereas sexual orientation was associated with sexual victimization by a friend/acquaintance. Overall, 35% of the sample had been sexually victimized.  相似文献   
906.
Spamming is a major threat to the formation of public trust in the Internet and discourages broader civil participation in the emerging information society. To the individual, spams are usually little more than a nuisance, but collectively they expose Internet users to a panoply of new risks while threatening the communications and commercial infrastructure. Spamming also raises important questions of criminological interest. On the one hand it is an example of a pure cybercrime – a harmful behaviour mediated by the Internet that is the subject of criminal law, while on the other hand, it is a behaviour that has in practice been most effectively contained technologically by the manipulation of ‘code’ – but at what cost? Because there is not an agreed meaning as to what constitutes ‘online order’ that renders it simply and uncritically reducible to a set of formulae and algorithms that can be subsequently imposed (surreptitiously) by technological processes. The imposition of order online, as it is offline, needs to be subject to critical discussion and also checks and balances that have their origins in the authority of law. This article deconstructs and analyses spamming behaviour, before exploring the boundaries between law and code (technology) as governance in order to inform and stimulate the debate over the embedding of cybercrime prevention policy within the code itself.  相似文献   
907.
Women who seek medical care following sexual assault are usually evaluated and treated in an emergency department (ED). Therefore, EDs can be an important source of sexual assault surveillance data. The authors compared the incidence of sexual assault presenting for emergency care in a single county during July to November of 1974 and 1991. Participants included all female sexual assault victims aged 14 and older who presented for ED evaluation. Treating physicians prospectively collected data using standardized forms. The z statistic was used to compare sexual assault incidence. There was a 60% increase in the incidence of sexual assault victims presenting for emergency care in 1991 compared to 1974, primarily due to an increase in the incidence of women presenting to the ED after rapes by known assailants. In contrast, the annual incidence of reported stranger assaults was similar in the two study years.  相似文献   
908.
The Indiana University Advanced Research and Technology Institute (ARTI) is the technology transfer organ of the Indiana University system. ARTIs structure is complex, and has been dynamic since its creation in 1996. This complexity stems in part from the diversity represented by the Indiana University system and from competing interests within the university itself. In addition to the intrinsic value of higher education, the university has the potential to add substantial value to Indianas economic landscape through technology transfer, economic development initiatives and the resulting job creation, but realizing that potential will require effectively leveraging a disconnected network including the IU campuses and critical capabilities contributed by the states other world class institutions. This paper reviews the formation of ARTI, a discussion of its structure and evolving mission, recent initiatives and some possible metrics for technology transfer initiatives.  相似文献   
909.
This brief report explores dating violence by comparing three groups of male college students (nonabusive, psychologically abusive only, and physically abusive). These men were compared on measures of impulsivity, problems with alcohol, life satisfaction, anger management skills, history of witnessing abuse, history of experiencing abuse, and relationship satisfaction. Data for this analysis were obtained from a sample of 115 male college students. Differences between the three groups of men were found in the levels of problems with alcohol, relationship satisfaction, and anger management skills. Anger management skills best differentiated the three groups of men leading to the conclusion that dating violence prevention and intervention strategies with male college students should address anger management skills.  相似文献   
910.
State laws recognize that a competent adult patient has the right to consent to or refuse medical treatment. While the law is clear with regard to the right of competent adults, state statutes are more complicated when the patient is a minor. While the law should, and does, attempt to balance the rights and obligations of parents and guardians against the access and privacy rights of minors, complicated state statutory schemes often fail to simultaneously address those contrasting goals in a consistent and uniform manner. The result is a confusing set of seemingly arbitrary and sometimes conflicting provisions that require the detailed attention of healthcare providers to ensure legal compliance. With the aim of helping healthcare practitioners meet their legal obligations, this Article examines state laws governing minor's consent rights byfocusing on the instances in which a minor's parent, guardian, or other authorized adult is permitted to consent to treatment on behalf of a minor and the instances in which a minor is authorized to act independent of adult intervention.  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