全文获取类型
收费全文 | 1394篇 |
免费 | 103篇 |
专业分类
各国政治 | 163篇 |
工人农民 | 81篇 |
世界政治 | 151篇 |
外交国际关系 | 104篇 |
法律 | 711篇 |
中国共产党 | 1篇 |
中国政治 | 64篇 |
政治理论 | 218篇 |
综合类 | 4篇 |
出版年
2024年 | 2篇 |
2023年 | 20篇 |
2022年 | 12篇 |
2021年 | 31篇 |
2020年 | 42篇 |
2019年 | 61篇 |
2018年 | 82篇 |
2017年 | 108篇 |
2016年 | 71篇 |
2015年 | 71篇 |
2014年 | 73篇 |
2013年 | 190篇 |
2012年 | 94篇 |
2011年 | 98篇 |
2010年 | 42篇 |
2009年 | 24篇 |
2008年 | 64篇 |
2007年 | 49篇 |
2006年 | 48篇 |
2005年 | 50篇 |
2004年 | 58篇 |
2003年 | 51篇 |
2002年 | 43篇 |
2001年 | 22篇 |
2000年 | 18篇 |
1999年 | 10篇 |
1998年 | 6篇 |
1997年 | 11篇 |
1996年 | 2篇 |
1995年 | 4篇 |
1994年 | 4篇 |
1993年 | 5篇 |
1992年 | 3篇 |
1991年 | 4篇 |
1990年 | 2篇 |
1989年 | 3篇 |
1988年 | 3篇 |
1987年 | 1篇 |
1986年 | 1篇 |
1984年 | 1篇 |
1983年 | 2篇 |
1978年 | 1篇 |
1976年 | 1篇 |
1972年 | 2篇 |
1968年 | 1篇 |
1967年 | 3篇 |
1966年 | 1篇 |
1964年 | 1篇 |
1959年 | 1篇 |
排序方式: 共有1497条查询结果,搜索用时 218 毫秒
171.
Hugo Consciência Silvestre Rui Cunha Marques Brian Dollery Aldenísio Moraes Correia 《Local Government Studies》2020,46(1):68-90
ABSTRACTIn local government systems worldwide, financial pressures have obliged local authorities to focus on cost-efficient methods for providing local services, including inter-municipal agreements and public–public partnerships. However, in comparison with municipal mergers, privatisation and other approaches to the problem, the cost impact of the cooperative provision has not yet been thoroughly examined empirically. Moreover, available empirical research has largely concentrated on waste disposal in developed countries. The present paper seeks to contribute to the empirical literature on inter-municipal agreements and public–public partnerships by comparing their impact on costs with ‘stand-alone’ provision in a range of non-waste local services. In contrast to the bulk of existing studies, our analysis takes place in a developing country context by examining Brazilian local government over the period 2013/15. We found that – on the whole – cooperative provision is less expensive than the ‘stand-alone’ provision for the services studied. Our results can be explained by the size and composition of the population, together with the politics for cooperation. 相似文献
172.
173.
Marcella Guedes Barbosa MS Ademir Franco PhD Renata Dantas Barreto de Oliveira MD Mariela Peralta Mamani PhD José Luís Cintra Junqueira PhD Mariana Quirino Silveira Soares PhD 《Journal of forensic sciences》2023,68(3):743-756
The secondary dentin deposition that occurs after the tooth formation process results in a decrease in pulp cavity volume in adolescents and adults. The purpose of this critical review was to correlate pulpal and/or dental volume on cone-beam computed tomography (CBCT) with chronological age approximation. A subobjective was to investigate which methodology and CBCT technical parameters would be most appropriate to evaluate this correlation. This critical review followed the PRISMA guidelines, and it was conducted by a search through PubMed, Embase, SciELO, Scopus, Web of Science, Cochrane Library databases, as well as gray literature. Primary studies that used pulp volume, or pulp chamber to tooth volume ratio measured using CBCT were included. Seven hundred and eight indexed and 31 non-indexed records were identified. A qualitative analysis was performed including 25 selected studies with a total of 5100 individuals, age ranging from 8 to 87 years without sex predilection. The most used method was pulp volume/tooth volume. CBCT voxel size ranged between 0.09 and 0.5. Manual segmentation associated with threshold algorithms was used in most of the studies. Correlation between the pulp volume/tooth volume ratio was moderate: −0.66 for the upper central incisors, −0.59 for upper canines and −0.56 for lower canines. High heterogeneity was observed among the studies. It is concluded that pulp volume should be used with caution in age estimation. Evidence supports the preferable use of upper incisors with pulp volume/tooth volume ratio for age estimation. There is not enough evidence that voxel size interferes in age estimation by pulp volume. 相似文献
174.
175.
Scholars concur that conditional cash transfer (CCT) programs have a strong proincumbent effect among beneficiaries. Although no study has properly focused on the overall effect of cash transfers on incumbents' national vote shares, most scholars have deduced that this effect is positive; i.e., that cash transfers lead to the expansion of incumbents' electoral bases. This article analyzes survey data from nearly all Latin American countries and confirms that beneficiaries of CCT programs are more likely to support incumbents. However, it also shows that CCT programs may induce many voters who were previously incumbent supporters to vote for the opposition. As a consequence, the overall impact of cash transfers on incumbents' vote shares is indeterminate; it depends on the balance between both patterns of behavioral changes among voters. This study is the first to report evidence that cash transfer programs may have significant anti‐incumbent effects. 相似文献
176.
Javier Gil Guerrero 《British Journal of Middle Eastern Studies》2016,43(3):285-301
Jimmy Carter’s arrival to the White House and Washington’s new focus on human rights caused an early, although subtle, rift between the United States and the Shah’s Iran. The aim of this paper is to explore how the Bureau of Human Rights’ activist approach, under the leadership of the outspoken Patricia Derian, muddied the waters between Tehran and Washington, while using the export of riot control equipment as the spearhead of Carter’s human rights policy abroad. 相似文献
177.
178.
Isabel-María?García-Sánchez Beatriz?Cuadrado-BallesterosEmail author José-Valeriano?Frías-Aceituno 《European Journal of Law and Economics》2016,42(3):515-537
Government effectiveness could be explained by the level of well-informed electorate members, who use the press to learn more about politicians and public servants. Thus, a free press may improve citizens’ accessibility to this information, which in turn will make it more difficult for politicians and public servants to cover up or get away with corrupt behaviour, so the quality of the government could be affected by the media freedom. Accordingly, the main aim of this paper is to determine the effect of the freedom of the press on government effectiveness, considering additionally environmental, institutional, and political characteristics as factors that could determine the level of government effectiveness. To achieve this aim, we examined 202 central governments and compared them across countries using the World Bank data set of Governance Indicators for 2002–2008. The results show that the media, the organizational environment, and political characteristics may be determinants of the level of government effectiveness, taking countries’ economic development into account. 相似文献
179.
治理河流污染的制度激励悖论分析 总被引:1,自引:0,他引:1
为了治理日益加剧的河流污染,从中央到地方都相应出台了各种激励措施,但是这些措施并未起到显著效果,却形成了制度激励悖论。排污企业与地方政府在经历了新政策出台初的短暂扰动后,恢复原有均衡。要打破这一均衡,必须改变博弈各方的收益结构、可选策略集以及信息结构等,才有望建立符合科学发展观的最优均衡。 相似文献
180.
The People's Republic of China Tort Liability Law, which was adopted at the Twelfth Session of the Standing Committee of the Eleventh National People's Congress on December 26, 2009, became effective for implementation on July 1, 2010. Back in 2002, a draft of the law underwent initial examination by the NPC Standing Committee. 相似文献