全文获取类型
收费全文 | 1568篇 |
免费 | 40篇 |
专业分类
各国政治 | 120篇 |
工人农民 | 53篇 |
世界政治 | 143篇 |
外交国际关系 | 90篇 |
法律 | 703篇 |
中国政治 | 16篇 |
政治理论 | 462篇 |
综合类 | 21篇 |
出版年
2021年 | 16篇 |
2020年 | 23篇 |
2019年 | 33篇 |
2018年 | 28篇 |
2017年 | 39篇 |
2016年 | 43篇 |
2015年 | 22篇 |
2014年 | 48篇 |
2013年 | 291篇 |
2012年 | 34篇 |
2011年 | 40篇 |
2010年 | 32篇 |
2009年 | 32篇 |
2008年 | 38篇 |
2007年 | 44篇 |
2006年 | 55篇 |
2005年 | 37篇 |
2004年 | 48篇 |
2003年 | 36篇 |
2002年 | 47篇 |
2001年 | 32篇 |
2000年 | 36篇 |
1999年 | 27篇 |
1998年 | 17篇 |
1997年 | 17篇 |
1996年 | 28篇 |
1995年 | 20篇 |
1994年 | 20篇 |
1993年 | 17篇 |
1992年 | 13篇 |
1991年 | 24篇 |
1990年 | 17篇 |
1989年 | 20篇 |
1988年 | 24篇 |
1987年 | 16篇 |
1986年 | 18篇 |
1985年 | 20篇 |
1984年 | 32篇 |
1983年 | 21篇 |
1982年 | 17篇 |
1981年 | 19篇 |
1980年 | 19篇 |
1979年 | 14篇 |
1978年 | 15篇 |
1977年 | 11篇 |
1976年 | 17篇 |
1975年 | 10篇 |
1974年 | 13篇 |
1972年 | 13篇 |
1969年 | 8篇 |
排序方式: 共有1608条查询结果,搜索用时 15 毫秒
1.
George M. Guess 《公共行政管理与发展》1991,11(6):573-589
The failure of forestry to contribute to poverty reduction in Central America is due to public policies which inhibit its profitability. Absence of public regulation of harvesting and competing subsidies to agriculture keep forestry stumpage prices artificially low. This encourages destruction of the forest resource, which damages both the environment and the potential to reduce poverty. A comparison of Costa Rica and Honduras reveals two dissimilar approaches toward forest policy. While Costa Rica attempts to raise producer and grower stumpage prices by tax credits, soft loans and differential species fees, Honduras enforces price ceilings and uses centralized authority to control forest production and export. Both countries exhibit weaknesses in the management control cycle of programming, budgeting, implementing and evaluating their forest policies. Yet the Costa Rican approach has increased stumpage prices already, which bodes well for their forest sector. By contrast, the major beneficiary of Honduran forest policy has been COHDEFOR, the state enterprise responsible for forestry management, controlling production, and running its national system of agroforestry cooperatives. Despite greater public authority and resources than the Costa Rican forest service (DGF), the Honduran forest policy is not likely to increase producer profitability or reduce poverty in the near future. 相似文献
2.
3.
Linda Siegele Halina Ward 《Review of European Community & International Environmental Law》2007,16(2):135-144
This article explores the relationship between multilateral environmental agreements (MEAs) and corporate social responsibility (CSR). It offers an overview of the linkages, a survey of relevant provisions of key MEAs, and a review of the relationship between global trade rules and MEAs. Finally, the article highlights three ongoing discussions with relevance to linkages between CSR and MEAs: (1) whether, and if so how, to identify minimum global business standards in the environmental sphere; (2) the rapidly evolving 'sub-theme' within the CSR agenda which addresses the business/development interface, and the contribution of business to poverty reduction, sustainable livelihoods and achieving the Millennium Development Goals; and (3) the development by the International Organization for Standardization of an international guidance standard on 'organizational social responsibility', which, if adopted, will become ISO 26000. The risk of seeing CSR as a new pathway to MEA implementation is that the role of MEAs in informing the development of minimum acceptable environmental norms of business behaviour will be 'watered down'. If MEAs are to learn from CSR, their competitors and often stronger counterparts in the international architecture – intergovernmental trade and investment arrangements – also need to be equipped not only to be sensitive to CSR, but actively to support it. 1 相似文献
4.
5.
6.
7.
8.
Here we consider two ways that nanomedicine might be disruptive. First, low-end disruptions that are intrinsically unpredictable but limited in scope, and second, high end disruptions that involve broader societal issues but can be anticipated, allowing opportunity for ethical reflection. 相似文献
9.
10.
Effects of positional restraint on oxygen saturation and heart rate following exercise 总被引:1,自引:0,他引:1
D T Reay J D Howard C L Fligner R J Ward 《The American journal of forensic medicine and pathology》1988,9(1):16-18
This report assesses the effects on peripheral oxygen saturation and heart rate that positional restraint induces when a person is prone, handcuffed, and "hog-tied." Peripheral oxygen saturation and heart rate were monitored at rest, during exercise, and during recovery from exercise for 10 adult subjects. The effects of positional restraint produced a mean recovery time that was significantly prolonged. Consequently, the physiological effects produced by positional restraint should be recognized in deaths where such measures are used. 相似文献