全文获取类型
收费全文 | 10384篇 |
免费 | 384篇 |
专业分类
各国政治 | 564篇 |
工人农民 | 452篇 |
世界政治 | 861篇 |
外交国际关系 | 449篇 |
法律 | 6526篇 |
中国政治 | 115篇 |
政治理论 | 1746篇 |
综合类 | 55篇 |
出版年
2023年 | 68篇 |
2021年 | 97篇 |
2020年 | 197篇 |
2019年 | 254篇 |
2018年 | 307篇 |
2017年 | 402篇 |
2016年 | 363篇 |
2015年 | 247篇 |
2014年 | 329篇 |
2013年 | 1152篇 |
2012年 | 355篇 |
2011年 | 355篇 |
2010年 | 250篇 |
2009年 | 223篇 |
2008年 | 323篇 |
2007年 | 344篇 |
2006年 | 321篇 |
2005年 | 264篇 |
2004年 | 290篇 |
2003年 | 282篇 |
2002年 | 240篇 |
2001年 | 366篇 |
2000年 | 334篇 |
1999年 | 251篇 |
1998年 | 109篇 |
1997年 | 91篇 |
1996年 | 86篇 |
1995年 | 84篇 |
1994年 | 88篇 |
1993年 | 77篇 |
1992年 | 150篇 |
1991年 | 165篇 |
1990年 | 146篇 |
1989年 | 164篇 |
1988年 | 142篇 |
1987年 | 157篇 |
1986年 | 137篇 |
1985年 | 157篇 |
1984年 | 128篇 |
1983年 | 142篇 |
1982年 | 96篇 |
1981年 | 93篇 |
1980年 | 70篇 |
1979年 | 103篇 |
1978年 | 76篇 |
1977年 | 68篇 |
1976年 | 59篇 |
1974年 | 62篇 |
1973年 | 67篇 |
1971年 | 58篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
921.
922.
The vast natural resources of India's forests, including non-timber forest products (NTFPs), such as medicinal and aromatic plants, leaves, fruits, seeds, resins, gums, bamboos, and canes, offer employment that provides up to half the income of about 25 per cent of the country's rural labour force. However, poor harvesting practices and over-exploitation in the face of increasing market demand are threatening the sustainability of these resources, and thus the livelihoods of forest-dependent tribal communities. This article analyses the role of NTFPs in livelihoods-improvement initiatives and considers recent initiatives intended to enhance their conservation and sustainable management. It recommends policies to optimise the potential of NTFPs, both to support rural livelihoods and to contribute to India's social, economic, and environmental well-being. 相似文献
923.
This study examines whether the incidence of crossburnings rises in areas where white supremacist organizations, such as the Christian Knights of the Ku Klux Klan, have held rallies or demonstrations. Using data from two public interest groups, Klanwatch and North Carolinians Against Racial and Religious Violence, we track crossburnings and white supremacist activities in 100 North Carolina counties annually for the period 1987–1993. Various statistical models, including an event count analysis that allows each county to have its own level or reporting bias, indicate that the base rate at which crossburnings occur rises sharply in counties where a demonstration has taken place. Since none of the suspected crossburners has apparent ties to white supremacist groups, it may be that white supremacist rallies encourage fellow travelers to engage in this form of racial intimidation. 相似文献
924.
Johan C. Van Bruggen Jacob P. Scheele Don F. Westerheijden 《European Journal for Education Law and Policy》1998,2(2):155-163
The authors report on West European trends in follow-up arrangements of national quality assurance procedures. They argue
that external quality assurance ought to adopt a broader conception of quality than is now often the case. Next, the general
public ought to have a guarantee that external quality assurance is valid (through meta-evaluation) and has consequences (through
follow-up arrangements). Follow-up currently is not well developed in many European countries in a formal sense, but is receiving
more attention as external quality assurance is maturing. Finally, the authors link national quality assurance to the European
dimension; an international network could fulfil important functions in making quality assurance transparent and credible
across Europe.
This revised version was published online in August 2006 with corrections to the Cover Date. 相似文献
925.
The National Health Service (NHS) in England and Wales has embarked upon a radical and far–reaching programme of change and reform. However, to date the results of organizational quality and service improvement initiatives in the public sector have been mixed, if not to say disappointing, with anticipated gains often failing to materialize or to be sustained in the longer term. This paper draws on the authors' recent extensive research into one of the principal methodologies for bringing about the sought after step change in the quality of health care in England and Wales. It explores how private sector knowledge management (KM) concepts and practices might contribute to the further development of public sector quality improvement initiatives in general and to the reform of the NHS in particular. Our analysis suggests there have been a number of problems and challenges in practice, not least a considerable naïvety around the issue of knowledge transfer and 'knowledge into practice' within health care organizations. We suggest four broad areas for possible development which also have important implications for other public sector organizations. 相似文献
926.
This paper contributes to ard a better understanding of innovation in the service sector by focusing on the disparate nature
of R&D in the U.S. service sector as learned through case studies of the U.S. telecommunications, financial services, systems
integration services, and research and development testing services industries. Based on this understanding of the nature
and scope of R&D therein, a new policy-oriented model of innovation specific to the service sector is posited. Also, policy
recommendations are offered with regard to the public sector’s collection and interpretation of R&D data related to the service
sector.
相似文献
927.
928.
Contreras Antonio P. 《International Environmental Agreements: Politics, Law and Economics》2004,4(2):179-193
In the domain of environmental security, it appears that a strong civil society, one with strong social ingenuity and social capital, is a necessary condition not only for environmental security, but also for regional security in general. This paper will argue that in the context of the Association of Southeast Asian Nations (ASEAN), much can be learned from the empirical experiences of Thailand and the Philippines that have established records of accomplishment in civil society participation in forest governance. Also discussed is the possible role of epistemic communities both within these countries as well as across countries in the ASEAN in harnessing institutions of knowledge to influence domestic and regional governance of forest resources. 相似文献
929.
The present 4-year follow-up study involves 56 mothers who were evaluated by social agencies as being abusive and neglectful or at high risk for child abuse and neglect. The aim of the study is to analyze the relationship between psychosocial risk factors (relating to the history and current situation of the mothers) that were present at the time the families were initially recruited and the fact that some of the mothers continue to show a high potential for child abuse and neglect (chronic abuse and neglect), whereas others were able to overcome the problem (transitory abuse and neglect). Results indicate that the following variables are particularly associated with situations involving chronic problems of abuse and neglect: initial level of severity of potential for abuse and neglect; dual-parent status; a large number of children at the time of intervention (3.13 times more risk of chronicity for large families); the fact that as a child the mother herself had been placed in a foster home (3.7 times more risk); that she had been sexually abused (3.5 times more risk); and that as an adolescent she had run away from home (3.02 times more risk). Our results indicate that mothers who have a combination of more than eight risk factors are four times more likely to be in the chronic group. 相似文献
930.