全文获取类型
收费全文 | 6956篇 |
免费 | 246篇 |
专业分类
各国政治 | 427篇 |
工人农民 | 270篇 |
世界政治 | 604篇 |
外交国际关系 | 311篇 |
法律 | 3900篇 |
中国共产党 | 2篇 |
中国政治 | 52篇 |
政治理论 | 1594篇 |
综合类 | 42篇 |
出版年
2020年 | 96篇 |
2019年 | 108篇 |
2018年 | 143篇 |
2017年 | 171篇 |
2016年 | 168篇 |
2015年 | 136篇 |
2014年 | 144篇 |
2013年 | 868篇 |
2012年 | 169篇 |
2011年 | 183篇 |
2010年 | 162篇 |
2009年 | 182篇 |
2008年 | 200篇 |
2007年 | 206篇 |
2006年 | 191篇 |
2005年 | 178篇 |
2004年 | 218篇 |
2003年 | 180篇 |
2002年 | 172篇 |
2001年 | 234篇 |
2000年 | 219篇 |
1999年 | 167篇 |
1998年 | 117篇 |
1997年 | 98篇 |
1996年 | 78篇 |
1995年 | 97篇 |
1994年 | 92篇 |
1993年 | 96篇 |
1992年 | 122篇 |
1991年 | 115篇 |
1990年 | 135篇 |
1989年 | 120篇 |
1988年 | 114篇 |
1987年 | 113篇 |
1986年 | 129篇 |
1985年 | 137篇 |
1984年 | 98篇 |
1983年 | 97篇 |
1982年 | 59篇 |
1981年 | 68篇 |
1980年 | 68篇 |
1979年 | 58篇 |
1978年 | 63篇 |
1977年 | 41篇 |
1976年 | 45篇 |
1975年 | 51篇 |
1974年 | 66篇 |
1973年 | 62篇 |
1972年 | 46篇 |
1969年 | 42篇 |
排序方式: 共有7202条查询结果,搜索用时 15 毫秒
21.
22.
23.
Local government reforms in contemporary Russia are placed in the broader contexts of political reform under Putin and the historical relationship between local administration and the state. Reforms of local government thus help illuminate the architecture of contemporary state building in Russia and the degree to which contemporary Russia perpetuates political traditions. This study reviews the antecedent action in local government prior to the Putin era. It then examines the Kozak Commission and the new law on local government, assessing the strengths and weaknesses of these reforms. Finally, this study examines the challenges of implementing the reforms and what these challenges tell us about devolution and centralisation under Putin. 相似文献
24.
25.
A fatality following ingestion of the drug baclofen (Lioresal) is described. Baclofen was identified in urine by gas chromatography/mass spectrometry. After derivatization with trinitrobenzene sulfonic acid, baclofen was quantitated in serum and urine by high-performance liquid chromatography. The concentration of baclofen was 17 mg/L in serum and 760 mg/L in urine collected approximately 12 h after the overdose. To our knowledge, this is only the second reported fatality involving a baclofen overdose. The previous case did not include quantitation of baclofen in any biological fluid. 相似文献
26.
27.
28.
Rebecca Emerson Stephen G. Hall Anna Zalewska-Mitura 《Economic Change and Restructuring》1997,30(2-3):75-90
With new technically advanced methods and computers at our disposal, the efficient market hypothesis is once again being debated. At the same time, we are witnessing an unprecedented growth in both existing and new financial markets. These new markets are often in economies which have just recently embraced free market economics; we term these stock markets infant markets. Such stock markets are obviously not efficient in allocating the supply of savings to productive capital. We do not test whether or not these infant markets are informationally efficient, but instead examine whether and how they are becoming more efficient. We propose modelling the excess returns of individual securities using a multi-factor model with time-varying coefficients and generalised auto-regressive conditional heteroskedastic (GARCH) errors. If the markets are becoming more informationally efficient or the agents are learning, we would expect this to manifest itself as the time-varying coefficients becoming more stable as time increases. We test our model using data on four Bulgarian shares. First, we estimate an AR(2) model and a GARCH-M(1,1) model for the shares. Then, we estimated our AR(2) model with time varying coefficients and GARCH type errors. We find varying levels of efficiency and varying speeds of movement towards efficiency within our sample of four shares. 相似文献
29.
30.