全文获取类型
收费全文 | 12488篇 |
免费 | 296篇 |
专业分类
各国政治 | 575篇 |
工人农民 | 408篇 |
世界政治 | 891篇 |
外交国际关系 | 481篇 |
法律 | 7807篇 |
中国共产党 | 1篇 |
中国政治 | 68篇 |
政治理论 | 2446篇 |
综合类 | 107篇 |
出版年
2020年 | 127篇 |
2019年 | 183篇 |
2018年 | 250篇 |
2017年 | 240篇 |
2016年 | 267篇 |
2015年 | 175篇 |
2014年 | 238篇 |
2013年 | 1295篇 |
2012年 | 330篇 |
2011年 | 333篇 |
2010年 | 266篇 |
2009年 | 294篇 |
2008年 | 352篇 |
2007年 | 321篇 |
2006年 | 311篇 |
2005年 | 266篇 |
2004年 | 293篇 |
2003年 | 266篇 |
2002年 | 250篇 |
2001年 | 580篇 |
2000年 | 521篇 |
1999年 | 394篇 |
1998年 | 157篇 |
1997年 | 174篇 |
1996年 | 126篇 |
1995年 | 133篇 |
1994年 | 136篇 |
1993年 | 114篇 |
1992年 | 266篇 |
1991年 | 295篇 |
1990年 | 276篇 |
1989年 | 281篇 |
1988年 | 250篇 |
1987年 | 256篇 |
1986年 | 256篇 |
1985年 | 215篇 |
1984年 | 210篇 |
1983年 | 203篇 |
1982年 | 131篇 |
1981年 | 142篇 |
1980年 | 88篇 |
1979年 | 173篇 |
1978年 | 103篇 |
1977年 | 86篇 |
1976年 | 77篇 |
1975年 | 98篇 |
1974年 | 118篇 |
1973年 | 120篇 |
1972年 | 97篇 |
1971年 | 88篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
71.
A case of kidnapping involving the concept of paternity testing is described. The couple arrested and charged with kidnapping stated the child in their possession was their biological daughter. Serological tests were performed on liquid blood samples in an effort to determine if the couple could have been the biological parents of the child. Two genetic inconsistencies were discovered in the 15 blood marker systems analyzed. 相似文献
72.
Marc G. Doucet 《Global Society》2005,19(3):289-306
Many scholars in International Relations (IR) have drawn from popular films to examine various problématiques that have informed the discipline's main theorisations. As Cynthia Weber remarks, popular films are powerful because they engage in the very ‘serious political work’ of mythologising the ‘truths’ and ‘realities’ which provide the foundation for many of IR's main theoretical envisionings of our world. To date, however, children's films have received very little attention. For the purpose of this paper, three have been isolated: Toy Story (1995), A Bug's Life (1998) and Rescue Heroes: The Movie (2003). Children's films, it can be argued, help to craft and restore certain perspectives for each new generation of young minds during the crucial years when the world is being textualised for the first time. The objective of this paper, therefore, is to read these films as working towards producing and sustaining the power/knowledge that seeks to defend contemporary forms of world order while concurrently extending and disseminating the rule of these forms of world order through the medium of children's popular cinema. 相似文献
73.
V. K. Borooah 《Public Choice》1991,72(1):1-12
An important problem in the political economy of the UK is that the disparity of unemployment rates across its regions is much more marked than the corresponding dispersion of wage rates. One possibility is that this is due to the attitude of trade unions to their members in different regions. If unions wish to preserve parity between members in different regions then they will value wage equality between regions over and above wage levels. This may then persuade them to overlook inter-regional productivity differences in setting wages. The price that low-efficiency regions will then pay for this desire for wage equality is higher unemployment rates.Much of the research for this paper was carried out while the author was visiting the Trade Union Economics Research Institute (FIEF), Stockholm in 1989. An earlier version of this paper was presented at a seminar there and the author is gratefully to Villy Bergstrom, Paul Chen, Douglas Hibbs, Eva Udden-Jondal and other institute members for several useful comments. Comments from Kevin Lee, John Spencer and an anonymous referee have also substantially improved the paper. The usual disclaimer applies. 相似文献
74.
75.
A dissecting intramural haematoma of the coronary artery is an infrequent cause of sudden and unexpected death. Most cases are women and in a significant number of these women, the haematoma occurred at term to 80 days postpartum. Because the intimal rupture and communication with the lumen were not found in most of the cases, the site of rupture has been considered to be a vasa vasorum. The authors report on a case of one woman who was at a later postpartum period (106 days). The microscopic finding of the dissected coronary artery revealed two intimal tears in a section. The case showed that the dissecting intramural haematoma of the coronary artery is caused not only by the rupture of the vasa vasorum but also by the rupture of the intima. 相似文献
76.
Distinctive blunt force injuries caused by a crescent wrench. 总被引:1,自引:0,他引:1
77.
78.
Jeffrey G. Johnson 《Journal of youth and adolescence》1993,22(1):33-42
The present study investigated the extent to which psychosocial development through the first five stages of Erik Erikson's theory of personality development is associated with Diagnostic and Statistical Manual (third edition, revised; DSM-III-R) Axis II personality disorder symptomatology in a late adolescent sample of undergraduate students. The Inventory of Psychosocial Development (IPD) and the Personality Diagnostic Questionnaire—Revised (PDQ-R) were administered to a mixed-sex sample of 106 undergraduate students. The results of this research were that IPD scores assessing negative resolutions of the first five Eriksonian developmental stages consistently predicted scores on the PDQ-R composite scale and the PDQ-R impairment/distress index—both measures of overall personality disorder symptomatology. The IPD subscales varied substantially in the extent to which they predicted scores on the 13 PDQ-R subscales that assess symptoms of specific DSM-III-R personality disorders—ranging from the trust vs. mistrust subscale, which predicted scores on 12 of the 13 PDQ-R subscales, to the initiative vs. guilt subscale, which predicted scores on only 6 of the 13 PDQ-R subscales. Implications of these findings for our understanding of the relationship between psychosocial development and psychopathology are discussed in the context of previous research in this area, and suggestions for future research are offered.Received Ph.D. from Temple University. Research interests include personality disorders, depression, and life events. 相似文献
79.
ROBIN G. MILNE 《Public administration》1993,71(3):301-321
Compulsory competitive tendering (CCT) has been an important instrument of Conservative government economic policy since 1979. Its effectiveness in generating cost-effective services depends on competition to supply the service in question.
The NHS domestic market is large and, prior to the introduction of CCT, promised to be profitable for contractors. Many contract cleaners with office cleaning experience entered. In the event the costs of entry were heavy, and the profit margins of established firms were reduced. When contracts have been awarded to firms, they tended to be to those with a track record. Many firms therefore withdrew; and the few that remained have profit margins in the NHS little different from those found elsewhere. Of more than by firms with a serious interest in entry, probably no more than a handful can have come out of the experience in net profit in the first seven years.
The experience of CCT in the market for NHS domestic services has shown that a degree of competition in the market can be achieved, arguably because of the presence of direct service organizations. Competition for this market, on the other hand, can be limited by the high costs of entry. 相似文献
The NHS domestic market is large and, prior to the introduction of CCT, promised to be profitable for contractors. Many contract cleaners with office cleaning experience entered. In the event the costs of entry were heavy, and the profit margins of established firms were reduced. When contracts have been awarded to firms, they tended to be to those with a track record. Many firms therefore withdrew; and the few that remained have profit margins in the NHS little different from those found elsewhere. Of more than by firms with a serious interest in entry, probably no more than a handful can have come out of the experience in net profit in the first seven years.
The experience of CCT in the market for NHS domestic services has shown that a degree of competition in the market can be achieved, arguably because of the presence of direct service organizations. Competition for this market, on the other hand, can be limited by the high costs of entry. 相似文献
80.
Some features of early child care are more prominent in Norway than in other countries, such as emphasis on the outdoor environment. Of general relevance and interest is the form of day care provided by forest day-care centers. Three ideas form the development of these centers placed in wild areas. First, throughout history, Norwegians have had a close attachment to nature and some parents want to provide their children with outdoor experiences at an early age. Second, urging children to play outdoors characterizes the image many parents have of a happy, healthy childhood. Third, provision of day care for children has always been restricted in western countries, forcing parents to invent types of service that can become part of an ecological system that promotes healthy development.The forest day-care centers developed recently represent a supplement to the wide typology of child care in the 21st century. The article outlines the connections between these ideas in general European and western history and Norwegian history and presents debate and decisions about a question dating from the last half of the 1980s. It concludes that the forest day-care centers are perhaps only a modern form of the original kindergarten concept, which started in Europe and America as gardens for children not gardens of children. 相似文献