全文获取类型
收费全文 | 15647篇 |
免费 | 416篇 |
专业分类
各国政治 | 897篇 |
工人农民 | 544篇 |
世界政治 | 1140篇 |
外交国际关系 | 637篇 |
法律 | 9342篇 |
中国共产党 | 2篇 |
中国政治 | 156篇 |
政治理论 | 3171篇 |
综合类 | 174篇 |
出版年
2020年 | 176篇 |
2019年 | 215篇 |
2018年 | 304篇 |
2017年 | 338篇 |
2016年 | 365篇 |
2015年 | 297篇 |
2014年 | 316篇 |
2013年 | 1744篇 |
2012年 | 417篇 |
2011年 | 495篇 |
2010年 | 366篇 |
2009年 | 392篇 |
2008年 | 422篇 |
2007年 | 382篇 |
2006年 | 388篇 |
2005年 | 327篇 |
2004年 | 355篇 |
2003年 | 379篇 |
2002年 | 312篇 |
2001年 | 621篇 |
2000年 | 572篇 |
1999年 | 485篇 |
1998年 | 221篇 |
1997年 | 200篇 |
1996年 | 185篇 |
1995年 | 177篇 |
1994年 | 195篇 |
1993年 | 178篇 |
1992年 | 300篇 |
1991年 | 313篇 |
1990年 | 289篇 |
1989年 | 296篇 |
1988年 | 290篇 |
1987年 | 279篇 |
1986年 | 304篇 |
1985年 | 259篇 |
1984年 | 261篇 |
1983年 | 271篇 |
1982年 | 167篇 |
1981年 | 139篇 |
1980年 | 133篇 |
1979年 | 198篇 |
1978年 | 136篇 |
1977年 | 119篇 |
1976年 | 122篇 |
1975年 | 120篇 |
1974年 | 124篇 |
1973年 | 121篇 |
1972年 | 113篇 |
1971年 | 109篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
111.
Little literature has been developed to describe the process of transferring a corporation's technology between international
units of that company for ultimate transfer to their external customers (Kimberly 1981 and Leonard-Barton and Sinha 1993).
This paper addresses the issues at Air Products and Chemicals, Inc. involved in the transfer of applications technology. Technology
is transferred from the unit of the corporation which develops the technology to international affiliates and subsidiaries.
The ultimate goal is the support of product sales to the external industrial customer. A strategy for this type of organization
is described which is supported by references to theoretical constructs in the literature and empirical observations from
the organization itself. 相似文献
112.
113.
114.
H C Modlin 《The Bulletin of the American Academy of Psychiatry and the Law》1990,18(2):153-162
This paper concerning the last 87 malpractice cases referred to the Department of Psychiatry and Law, Menninger Clinic, includes 57 suits against mental health practitioners and/or institutions, and 30 nonpsychiatric suits against general hospitals, surgeons, obstetricians, etc. A patient was available for interview in only 12 percent of the psychiatric cases; in 88 percent we reviewed medical records and consulted with attorneys. In the psychiatric cases the crucial question was whether a generally accepted standard of care was breached. The inherent problems of applying appropriate criteria to standards of care by practitioners and institutions are discussed. In half the psychiatric cases we found no significant deviation from acceptable clinical performance; in half we concluded that negligent practice had occurred. We did see a litigant for evaluation in 90 percent of the nonpsychiatric cases. The main issue involving them concerned harm or disability related to presumed negligence by medical personnel. How we evaluate such cases and apply disability criteria is discussed. 相似文献
115.
116.
117.
118.
Significance of functional and nutritive pulmonary circulation for vital reactions in the form of embolisms 总被引:2,自引:0,他引:2
G Adebahr 《Zeitschrift für Rechtsmedizin》1988,100(1):55-64
The functional and nutritive circulation in the lungs is connected by anastomoses between the pulmonary and bronchial arteries. The anastomoses have the structure of blocked arteries from which arteriovenous anastomoses proceed to the peribronchial plexus. The pulmonary artery is provided with a flow impulse by the anastomoses, and oxygen-containing blood is admixed with the venous blood, thus forming an "aortalization" in the lungs. By diverting the bloodstream, venous blood can reach the bronchial artery. The peculiarities of the lung circulation are important for vital reactions in the form of macro- and microembolisms. Macroembolisms prove the functionality of the system if branches of the pulmonary artery are closed before the arteries are blocked. A hemorrhagic infarction either arises or does not arise, and the hemorrhagic infarction cannot exceed a certain limit. A microembolism is over and above the anastomoses. If the microembolism is greater, pressure in the arteria pulmonaris can cause blood from the pulmonary artery to overflow into the bronchial artery. Because arteriovenous anastomoses arise from the blocked arteries, microemboli can now reach the systemic circulation. Thus, the system described can explain the passage of microemboli into the systemic circulation, avoiding the capillaries of the lungs; on the other hand, larger microembolisms can prove the functionality of the system. 相似文献
119.
120.
In Garcia v. San Antonio Metropolitan Transit Authority (1985),Justice Harry Blackmun held that the Tenth Amendment does notprevent the Congress from subjecting state and local governmentsto the provisions of the Fair Labor Standards Act, concludingthat the "political safeguards offederalism" are generally adequateto protect state interests on the national scene. This articleexamines the intellectual foundations of the "political safeguardsof federalism" and finds them inadequate. It then surveys thepost-Garcia scholarship to ascertain whether an alternativetheory of the Tenth Amendment has emerged. Concluding that ithas not, the author suggests the need for afresh approach inview of the hints contained in Justice Sandra Day O'Connor'sopinion in Gregory v. Ashcroft (1991) that five justices maybe ready to reexamine the central thesis of Garcia. 相似文献