全文获取类型
收费全文 | 16969篇 |
免费 | 1380篇 |
专业分类
各国政治 | 848篇 |
工人农民 | 517篇 |
世界政治 | 1421篇 |
外交国际关系 | 630篇 |
法律 | 11099篇 |
中国共产党 | 1篇 |
中国政治 | 114篇 |
政治理论 | 3574篇 |
综合类 | 145篇 |
出版年
2020年 | 403篇 |
2019年 | 425篇 |
2018年 | 502篇 |
2017年 | 572篇 |
2016年 | 608篇 |
2015年 | 515篇 |
2014年 | 548篇 |
2013年 | 2051篇 |
2012年 | 400篇 |
2011年 | 506篇 |
2010年 | 646篇 |
2009年 | 603篇 |
2008年 | 449篇 |
2007年 | 490篇 |
2006年 | 524篇 |
2005年 | 400篇 |
2004年 | 411篇 |
2003年 | 403篇 |
2002年 | 377篇 |
2001年 | 540篇 |
2000年 | 456篇 |
1999年 | 380篇 |
1998年 | 260篇 |
1997年 | 221篇 |
1996年 | 202篇 |
1995年 | 207篇 |
1994年 | 204篇 |
1993年 | 197篇 |
1992年 | 279篇 |
1991年 | 313篇 |
1990年 | 286篇 |
1989年 | 288篇 |
1988年 | 279篇 |
1987年 | 261篇 |
1986年 | 289篇 |
1985年 | 271篇 |
1984年 | 280篇 |
1983年 | 247篇 |
1982年 | 208篇 |
1981年 | 176篇 |
1980年 | 170篇 |
1979年 | 189篇 |
1978年 | 135篇 |
1977年 | 124篇 |
1976年 | 90篇 |
1975年 | 94篇 |
1974年 | 101篇 |
1973年 | 96篇 |
1972年 | 78篇 |
1968年 | 67篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
992.
This article argues that the energy and environmental policy areas in Congress are no longer considered components of the government management dimension. The two policy areas have separated from the government management dimension constructed by Clausen and are now distinct and autonomous Congressional policy areas. The models of roll call voting for energy and environment issues are very different. Energy is tied more closely to technical considerations while environmental issues are more emotional and more closely tied to quality of life concerns. 相似文献
993.
A limited number of recent empirical studies suggest that inmates suffer from high rates of serious mental illness. Different explanations are offered depending on the type of institution: jail or prison. The literature is based largely on urban samples and does not offer comparisons of rates across types of institution within a single study. The present study examined a random sample of 213 jail and prison inmates in a rural state using the Diagnostic Interview Schedule (III-R). Among jail inmates there was little evidence of high rates of serious mental illness, suggesting the criminalization of mental illness may not be as evident in rural settings as urban areas. Among prison inmates, however, high rates of mental disorders were found, supporting previous findings in urban and rural jurisdictions. Implications of the findings are discussed in the context of a consolidated correctional system. 相似文献
994.
995.
The case of a sudden death from late valve entrapment of a left atrial pressure monitoring line not removed postoperatively is considered from both biomechanical and pathological points of view because of its forensic significance in terms of malpractice liability. 相似文献
996.
997.
Timothy S. Schoenecker Dr. Donald D. Myers Dr. Peter Schmidt 《The Journal of Technology Transfer》1989,14(2):28-32
Improvement in the ability of universities in the United States to transfer technology to the private sector is seen as a factor in strengthening American competitiveness. To better understand the university's role in this process, a survey of formal university programs in technology transfer was performed through personal interviews at four midwestern land-grant universities. There are six basic types of programs in place: technical assistance, affiliate, licensing, business development, incubators and research parks, and information networks. For purposes of classifying these programs, we used the model developed by Janis et al. (1) It was found that, of the six modes of technology transfer, two could be considered active, three semi-active and one passive. 相似文献
998.
E S Traisman S Young B D Lifschultz H S Traisman I Benuck I Chasnoff 《Journal of forensic sciences》1988,33(1):267-271
This paper describes a case of a neonate with disseminated herpes simplex born to a 14-year-old asymptomatic mother. The infant's physical examination was normal at birth, and subsequent abnormalities were so subtle that infection was not recognized during life. Postmortem cultures of liver and spleen grew herpes simplex virus, and immunofluorescent direct antibody typing revealed Type 2. A cervical culture of the mother obtained after the infant's death was negative. 相似文献
999.
This paper uses a heretofore untapped source of information in the National Crime Survey (NCS) victimization data—the interviewer narratives—to explore school-related victimizations among adolescents. These narrative reports provide important information bearing on lifestyle and routine activity theories of victimization that is simply not available from the more familiar, highly structured portions of the NCS questionnaire. The NCS narratives suggest that a large proportion of school-related victimizations stems from peer interactions that occur in the course of routine daily activities and escalate into victimizations. Students represent pools of both potential offenders and potential victims who come in frequent contact with each other, often in the absence of capable guardians. However, rather than predatory, calculated attempts to harm, school-related victimizations among adolescents appear to consist primarily of bullying, injured pride, and misguided mischief. The theoretical and methodological implications of this study are highlighted. 相似文献
1000.
This research contributes to a further understanding of prosecutorial discretion by exploring tenets of casual attribution
theory and etiology of bias theory as each informs an uncertainty avoidance perspective on the prosecutor's decision to divert
felony drug defendants from criminal prosecution and into a treatment program. The sociolegal consequences of the exercise
of this early screening decision are expressed by both conflict theorists and labeling theorists. Our analysis involves estimating
main effects and interaction effects of defendant ascribed status and achieved status on the likelihood of diversion. The
findings indicate partial support for hypotheses derived, from the theoretical perspectives pursued. In addition these findings
point to a more complex model of the subjective nature of the exercise of prosecutorial discretion, a model that benefits
from understanding the salience of minimizing uncertainty in the decision to criminals. 相似文献