全文获取类型
收费全文 | 20337篇 |
免费 | 584篇 |
专业分类
各国政治 | 932篇 |
工人农民 | 791篇 |
世界政治 | 1724篇 |
外交国际关系 | 773篇 |
法律 | 11623篇 |
中国共产党 | 2篇 |
中国政治 | 91篇 |
政治理论 | 4768篇 |
综合类 | 217篇 |
出版年
2020年 | 247篇 |
2019年 | 298篇 |
2018年 | 384篇 |
2017年 | 468篇 |
2016年 | 510篇 |
2015年 | 344篇 |
2014年 | 403篇 |
2013年 | 2234篇 |
2012年 | 465篇 |
2011年 | 514篇 |
2010年 | 428篇 |
2009年 | 464篇 |
2008年 | 544篇 |
2007年 | 567篇 |
2006年 | 532篇 |
2005年 | 470篇 |
2004年 | 484篇 |
2003年 | 513篇 |
2002年 | 513篇 |
2001年 | 755篇 |
2000年 | 701篇 |
1999年 | 591篇 |
1998年 | 349篇 |
1997年 | 314篇 |
1996年 | 259篇 |
1995年 | 249篇 |
1994年 | 283篇 |
1993年 | 266篇 |
1992年 | 391篇 |
1991年 | 427篇 |
1990年 | 363篇 |
1989年 | 394篇 |
1988年 | 351篇 |
1987年 | 379篇 |
1986年 | 392篇 |
1985年 | 372篇 |
1984年 | 315篇 |
1983年 | 368篇 |
1982年 | 288篇 |
1981年 | 263篇 |
1980年 | 202篇 |
1979年 | 277篇 |
1978年 | 186篇 |
1977年 | 163篇 |
1976年 | 153篇 |
1975年 | 136篇 |
1974年 | 163篇 |
1973年 | 129篇 |
1972年 | 125篇 |
1971年 | 107篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
141.
142.
Richard L. Chapman 《The Journal of Technology Transfer》1994,19(3-4):78-86
This paper examines nine cases of “spinback,” the flow back to laboratories of technical advantage from technology transfer activities. The benefits revealed in the cases are discussed and assessed for their value to the participating laboratories and the scientists involved. The objective of this study was to explore and test the feasibility of undertaking a comprehensive study of the value of spinback in order to encourage support for technology transfer activities by middle management in a laboratory. Spinback is defined as the phenomenon by which scientists’ and engineers’ participation in technology utilization activities results in a technically valuable flow back to their laboratories or organizations, thereby increasing or improving techical capability. It was anticipated that this exploration would provide evidence that the phenomenon does occur, with important consequences for the organization. 相似文献
143.
144.
Threatening and otherwise inappropriate letters to members of the United States Congress 总被引:2,自引:0,他引:2
P E Dietz D B Matthews D A Martell T M Stewart D R Hrouda J Warren 《Journal of forensic sciences》1991,36(5):1445-1468
The authors examine the characteristics of threatening and otherwise inappropriate communications sent to members of the U.S. Congress by a sample of 86 subjects, 20 of whom threatened assassination. We quote excerpts from these letters and provide quantitative data on such variables as the volume, duration, form, and appearance of such communications; the enclosures; the subjects' perceived relationships to the recipients; the thematic content of the communications; and the messages and threats communicated. Comparisons between 43 subjects who pursued encounters with members of Congress and 43 who did not revealed 17 factors associated with such pursuit. In this population, threateners were significantly less likely to pursue an encounter than inappropriate letter writers who did not threaten, regardless of the type of threat or the harm threatened. Inappropriate letters to members of Congress are compared with those directed to Hollywood celebrities. Mentally disordered persons writing to public figures often mention and sometimes threaten public figures other than those to whom the letters are addressed, which raises important issues regarding notification of endangered third parties and the sharing of information among protective agencies. 相似文献
145.
Benjamin J. Cohen 《国际研究展望》2003,4(3):275-292
With the rapid growth of cross-border competition among currencies, informed observers predict that the new monetary unions are virtually inevitable in many parts of the world. In fact, predictions of such alliances are misleading and almost certainly wrong. Monetary unions necessarily imply a measure of collective action in the issue and management of money. An alliance requires allies—other states with similar preferences and a disposition to act cooperatively. A survey of proposed monetary unions shows that willing partners among sovereign states are just not all that plentiful. Conceivably some governments could be attracted to less demanding forms of monetary alliance, depending on bargaining context. But prospects for many full new monetary unions are dim at best. 相似文献
146.
R. CHRISTOPHER SPICER CIH CHMM HARRY J. GANGLOFF PH.D. Neil Feldscher CIH CSP 《环境索赔杂志》2005,17(1):13-28
Bioaerosol data is often used in cases of building mold infestation alleging damage or adverse health effects upon occupants, despite the lack of consistent sampling and analytical protocols and numerical health-based standards. The most fundamental problem in these scenarios is defining a “significant” difference between a suspect indoor environment and the reference environment, regardless of the type of sampling and analysis utilized. Data interpretation focused upon differences in absolute numerical concentrations of fungi is subject to wide differences in expert opinion. On the other hand, an objective quantification of differences can be expressed in terms of probability and better meets criteria established in evidentiary rules. 相似文献
147.
Michael S. King 《Ratio juris》2003,16(3):399-415
Abstract. Western natural law theory emphasises the derivation of principles of right action said to be universal and objective from the application of practical reasonableness to the pursuit of basic human goods that are self‐evident or based on human nature. Critics say its methodology is inherently subjective. In contrast, the Vedic approach to natural law of the Bhagavad‐Gita emphasises the full development of a universal aspect of human nature—consciousness—to promote right action. A healthy person with a developed intellect, clear mind, balanced emotions and full perception is best placed to fulfil his or her society's highest ideals of ethical and lawful conduct. The Vedic approach advocates a supportive social environment and the use of meditation techniques to promote such development. Research has found that the Transcendental Meditation (TM) program promotes improvement in mind, body and behaviour. For example, offenders in Australia, the United States and Senegal practising the technique experienced decreased substance abuse and recidivism and improved wellbeing. From a scientific perspective, TM promotes these improvements by producing a unique psychophysiological state of restful alertness that dissolves stress that blocks the unfoldment of full potential in life. 相似文献
148.
Edward J. Keall 《British Journal of Middle Eastern Studies》2005,32(2):249-292
149.
150.
K Lalu P J Karhunen P Rautiainen 《The American journal of forensic medicine and pathology》1992,13(3):196-198
A 6-month-old girl died suddenly without any previous symptoms of heart failure. Autopsy examination showed cardiomegaly (97 g) with a severely fibrotized myocardium. The left coronary artery was originating from the pulmonary artery. Histologically, the myocardium showed myocardial infarcts of different ages, as well as grossly thickened arterial branches due to increased flow in left-right shunt. We suggest that rare anomalies of the coronary arteries should be considered in the autopsies of suspected sudden infant death syndrome cases. 相似文献