全文获取类型
收费全文 | 2057篇 |
免费 | 89篇 |
出版年
2023年 | 11篇 |
2020年 | 22篇 |
2019年 | 46篇 |
2018年 | 63篇 |
2017年 | 92篇 |
2016年 | 85篇 |
2015年 | 50篇 |
2014年 | 41篇 |
2013年 | 769篇 |
2012年 | 46篇 |
2011年 | 56篇 |
2010年 | 53篇 |
2009年 | 48篇 |
2008年 | 43篇 |
2007年 | 36篇 |
2006年 | 29篇 |
2005年 | 18篇 |
2004年 | 37篇 |
2003年 | 31篇 |
2002年 | 34篇 |
2001年 | 23篇 |
2000年 | 20篇 |
1999年 | 22篇 |
1998年 | 21篇 |
1997年 | 13篇 |
1996年 | 11篇 |
1995年 | 13篇 |
1994年 | 11篇 |
1993年 | 24篇 |
1992年 | 12篇 |
1991年 | 19篇 |
1990年 | 16篇 |
1989年 | 14篇 |
1988年 | 14篇 |
1987年 | 16篇 |
1986年 | 13篇 |
1985年 | 17篇 |
1984年 | 19篇 |
1983年 | 12篇 |
1982年 | 13篇 |
1981年 | 19篇 |
1980年 | 23篇 |
1979年 | 15篇 |
1978年 | 16篇 |
1977年 | 24篇 |
1976年 | 30篇 |
1975年 | 14篇 |
1973年 | 13篇 |
1972年 | 8篇 |
1971年 | 10篇 |
排序方式: 共有2146条查询结果,搜索用时 15 毫秒
41.
Jeffrey D. Greene 《政策研究杂志》1996,24(1):135-144
Cities across America look for management strategies useful for accomplishing their responsibilities and programs. While some cities include privatization strategies in their management portfolios, others do not, and the underlying reasons are not readily apparent. This study seeks to gain some insight into this disparity through several questions: Why do some cities use more privatization than others? Are privatization levels higher in fiscally healthy or fiscally stressed cities? Where are the cities that use privatization located? This study attributes municipal privatization levels in medium-sized cities, in part, to degree of wealth, fiscal stress, and location. The findings suggest that privatization levels are higher in wealthy, fiscally healthy, suburban cities. 相似文献
42.
Laurence J. O'Toole Jr. Chilik Yu James Cooley Gail Cowie Susan Crow Terry DeMeo Stephanie Herbert 《政策研究杂志》1997,25(1):11-26
Relatively little is known about the possibilities and limitations of voluntary public programs. The so-called 33/50 Program for reducing releases of certain toxic chemicals into the environment provides a useful instance for examination. In an investigation of toxics-reduction outcomes, with states as units of analysis, economic and policy variables help to explain the results. In particular, channels and approaches used In communicating policy intentions are related to outcomes. Voluntary programs can make a difference, but the details of execution, including the extent and nature of field efforts, influence outcomes. 相似文献
43.
44.
Jeffrey James 《Development and change》1993,24(3):405-437
This article is concerned with the impact of new technologies - especially, but not entirely, those that are related to microelectronics - on employment and labour markets in developing countries. Taking the form of a literature survey it looks at those impacts that have already occurred as well as effects that seem likely to occur in the future. Both sets of issues are addressed within an analytical framework that views the impact of technical change as the end result of a process which begins with the generation and proceeds via the diffusion of new technologies. The need for so broad an approach is shown to stem from the multiplicity of ways in which the generation and diffusion of new technologies influence each other and condition the ultimate impact of these technologies on employment and labour markets. Because many such mechanisms have not yet received much attention in the literature, there appears to be substantial scope for further research. 相似文献
45.
James A. Bill 《Iranian studies》1993,26(3-4):403-406
46.
The US. and France have adopted contrasting models of motor fuel tax and highway finance policy. Fuel tax revenues are dedicated to state and federal highway funds in America, keeping taxes quite low, but preventing them from contributing to the general treasury. French motor fuel taxes are higher and make up nearly 11 percent of the central government's general revenues, excluding social security contributions. French highway finance relies heavily on tolls. Pressure from the US. federal deficit has reduced the highway trust fund's ability to protect highway spending from budgetary competition. Political and procedural changes in Congress make it likely that the U.S.will move away from exclusive dedication of motor fuel taxes. 相似文献
47.
Kevin D. Ingram Kenneth E. Daugherty James L. Marshall 《Journal of archaeological science》1993,20(6)
Several samples of pyramids from Giza were obtained. The samples were analysed by scanning electron microscopy, electron diffraction by X-rays, powder X-ray diffraction, inductively coupled plasmography, Fourier-transform infrared spectroscopy and other techniques. Some scientists who have recently studied the pyramids have suggested that the pyramids were poured into place, stone by stone. The prevailing theory among Egyptologists is, of course, that the pyramids were built from blocks of natural stone. All of the results obtained during this study directly support the concept that the pyramids are made of limestone and are not cementitious in nature. 相似文献
48.
49.
James Ross Sweeney 《Journal of Medieval History》1984,10(4):295-313
By the fifteenth century the seigneurial exercise of high justice had become less common because of the growth of royal jurisdiction. The ancient and wealthy Benedictine nunnery of Montivilliers retained the right to high justice only during the octave of the Holy Cross. In 1493 Sandrin Bourel, a young man who had twice before been imprisoned for theft, was apprehended in the act of stealing from a bourgeois of Montivilliers. As the crime occurred during the octave of the Holy Cross the abbey claimed jurisdiction. A special tribunal was created to prosecute him. After having been tortured, Bourel was found guilty and hanged. The documents generated by this event provide the basis for a case study of the application of criminal procedure at the close of the middle ages. The condemned man's confession, rich in biographical detail, gives us a profile of a petty thief and vagabond on the margin of society. The financial account of the abbey's receiver-general documents in detail the total cost of the prosecution of a single medieval criminal. 相似文献
50.