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   12001篇
  免费   1220篇
各国政治   424篇
工人农民   436篇
世界政治   857篇
外交国际关系   304篇
法律   9167篇
中国共产党   1篇
中国政治   93篇
政治理论   1866篇
综合类   73篇
  2020年   348篇
  2019年   362篇
  2018年   420篇
  2017年   478篇
  2016年   491篇
  2015年   440篇
  2014年   439篇
  2013年   1217篇
  2012年   278篇
  2011年   370篇
  2010年   538篇
  2009年   499篇
  2008年   288篇
  2007年   253篇
  2006年   359篇
  2005年   247篇
  2004年   236篇
  2003年   231篇
  2002年   210篇
  2001年   441篇
  2000年   348篇
  1999年   296篇
  1998年   145篇
  1997年   130篇
  1996年   103篇
  1995年   132篇
  1994年   142篇
  1993年   116篇
  1992年   219篇
  1991年   235篇
  1990年   217篇
  1989年   230篇
  1988年   208篇
  1987年   179篇
  1986年   210篇
  1985年   226篇
  1984年   220篇
  1983年   185篇
  1982年   148篇
  1981年   131篇
  1980年   129篇
  1979年   150篇
  1978年   93篇
  1977年   79篇
  1976年   69篇
  1975年   71篇
  1974年   77篇
  1973年   64篇
  1972年   55篇
  1971年   56篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
In the last several decades, the field of family violence has paid increasing attention to children’s exposure to partner violence (CEPV). Most of this research has focused on the children of women seeking help for partner violence (PV) victimization. In this paper we examine exposure to PV among children of men who sought help for PV victimization (n?=?408), as compared with children of men in a population-based sample (n?=?666). We examined children’s exposure to psychological, physical, and sexual PV and also examined CEPV that is perpetrated by women, men, or both partners. The results show that CEPV is higher among children of helpseeking men than among children of men from the population-based sample, and that most of that PV is perpetrated by the female partner. We did not find differences in CEPV based in child age or gender. We discuss implications for the field of family violence professionals.  相似文献   
992.
There is a lack of research on honor crimes within the United States. We used an open source search methodology to identify the victim-offender relationship and motivations for this crime within the United States. Using data collected based on the protocol for the United States Extremist Crime Database (ECDB), we identified a total of 16 honor crimes with 40 victims that occurred between January 1st 1990 and December 31st 2014 in the United States. Based on our findings, the overarching motivations for honor crimes in the United States were the perpetrator’s former partner beginning the process of separation and the westernized behavior of the victim, typically the offender’s daughter or step-daughter. Honor crimes were not limited to current/former intimate partners or daughters, as they also included the death of extended family members (e.g. in-laws, nieces, and cousins). Policy implications and directions for future research on honor crimes are discussed.  相似文献   
993.

Objectives

Crime continuity is one of the best documented and least understood aspects of criminal behavior. Psychological inertia, the notion that cognitive variables mediate the relationship between earlier and later expressions of the same behavior, was tested as a possible explanation for crime continuity.

Methods

The cognitive mediation and additive postulates of the psychological inertia theorem were tested in a path analysis using self-report data from 1170 male delinquent members of the Pathways to Desistance study (Mulvey in Paper presented at the American Society of Criminology Annual Meeting, Chicago, IL, 2012). Wave 1 delinquency served as the independent variable, Wave 3 delinquency served as the dependent variable, Wave 2 outcome expectancies for crime, self-efficacy, general criminal thinking, and social capital served as the mediator variables, and 12 different baseline measures from criminological theory served as control variables in this study.

Results

General criminal thinking and low self-efficacy successfully mediated the relationship between past and future offending after age, race, early behavioral problems, peer criminality, family criminality, parental knowledge and monitoring, parental hostility, routine activities, measured intelligence, and precursors for each of the mediators were controlled. Social capital (cumulative disadvantage), by comparison, failed to mediate crime continuity in this study.

Conclusions

Effective cognitive mediation of the relationship between Wave 1 offending and Wave 3 offending and evidence that the effect may be additive offer preliminary support for the cognitive mediation and additive postulates of the psychological inertia theorem. Practical implications of these results include the need to routinely assess cognitive factors in criminal populations and target these factors for intervention.
  相似文献   
994.
This research evaluates secular change in Phenice's (Am J Phys Anthropol, 30, 1969 and 297) three morphological traits of the pubis, as described by Klales et al. (Am J Phys Anthropol, 149, 2012 and 104): medial aspect of the ischio‐pubic ramus, subpubic contour, and ventral arc. Ordinal scores were collected for these traits and compared between a sample of innominates from the historical Hamann–Todd Collection (n = 170) and modern Bass Donated Collection (n = 129). Using the Freeman–Halton test, significant differences between temporal sample score frequencies were found for all traits in females and for the subpubic contour and ventral arc in males. Despite these findings, classification accuracy using logistic regression between the temporal periods remained low (68.7%). These results suggest that secular changes in trait expression are occurring; however, sex estimation methods using these traits and created with historical samples are still applicable to modern forensic cases. In fact, the secular changes occurring in these traits contribute to better classification accuracy between sexes in modern populations.  相似文献   
995.
996.
To answer the question whether a negative result of gas chromatographic blood analysis for components of chemical mace proves that no or at most only slight tear gas exposure can have occurred, animal experiments were carried out. In the blood of 10 guinea pigs, which were exposed to the contents of chemical mace for 1--6 h, the solvants 1,1,2-trichloro-1,2,2-trifluorethane (freon 113) and 1,1,1-trichloroethane could easily be detected--even 23 h after the end of exposure or after a storage of the blood samples for 18 weeks--whereas the lacrimator chloracetophenone (CN) could not be found at all. In vitro experiments showed that CN relatively quickly reacts with components of blood. Therefore, blood samples should be analyzed for CN after withdrawal as soon as possible. In case of inhalation of the contents of chemical mace, i.e., after the comparatively mildest form of CN application, most probably no traces of the lacrimator at all can pass into the blood due to the quick reaction of CN with proteins of the respiratory surface of the lung.  相似文献   
997.
This article argues that the concept of illness has certain properties that make it a convenient administrative device for managing a need-based redistributive system in a society whose primary distributive system is based on work. These properties--cultural acceptance of illness as a legitimate excuse for not working, objective standards for identifying illness, and restrictiveness--have led to the widespread use of illness as an eligibility criterion for many social benefits, including cash transfers, services, privileges and exemptions. Paradoxically, the traditional rationales for using illness as one of the keystones of categorical welfare policy are eroding, yet welfare programs based on illness certification are growing rapidly. To explain this anomaly, the author suggests that medical certification as a distributive mechanisms serves certain latent political functions, such as allowing welfare programs to be responsive to political unrest, siphoning off opposition to controversial policies by the granting of medical exemptions to intense opponents, are reducing political conflict by using physicians as arbiters.  相似文献   
998.
Seminal fluid was studied biochemically for sperm identification in stains. The qualitative and quantitative distribution of amino acids in samples of fresh sperm has been alayzed. These findings were compared to the results of a similar study of fresh samples and stains of urine, saliva, vaginal fluor, and sweat. The results obtained show a specific and relatively constant level of amino acids in each of five biological liquids. There was no significant variation in results between fresh samples and stains.  相似文献   
999.
1000.
Sudden and unexpected death may result from cardiac concussion following blunt force trauma to the thorax. Undiagnosed pathologic disease must be carefully evaluated as a possible contributory element. Legal complications may arise from any autopsy. It is recommended that a photograph be taken upon completion of the autopsy. This photograph and adequate records can be used to refute any charges against the pathologist or assistants for the poor condition of a body after its release.  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