全文获取类型
收费全文 | 1272篇 |
免费 | 74篇 |
专业分类
各国政治 | 74篇 |
工人农民 | 58篇 |
世界政治 | 94篇 |
外交国际关系 | 109篇 |
法律 | 701篇 |
中国政治 | 11篇 |
政治理论 | 288篇 |
综合类 | 11篇 |
出版年
2023年 | 19篇 |
2022年 | 18篇 |
2021年 | 17篇 |
2020年 | 38篇 |
2019年 | 47篇 |
2018年 | 48篇 |
2017年 | 61篇 |
2016年 | 67篇 |
2015年 | 43篇 |
2014年 | 60篇 |
2013年 | 172篇 |
2012年 | 59篇 |
2011年 | 46篇 |
2010年 | 42篇 |
2009年 | 39篇 |
2008年 | 50篇 |
2007年 | 61篇 |
2006年 | 46篇 |
2005年 | 54篇 |
2004年 | 39篇 |
2003年 | 39篇 |
2002年 | 43篇 |
2001年 | 22篇 |
2000年 | 18篇 |
1999年 | 23篇 |
1998年 | 15篇 |
1997年 | 12篇 |
1996年 | 7篇 |
1995年 | 14篇 |
1994年 | 9篇 |
1993年 | 3篇 |
1992年 | 20篇 |
1991年 | 8篇 |
1990年 | 6篇 |
1989年 | 10篇 |
1988年 | 9篇 |
1987年 | 6篇 |
1986年 | 7篇 |
1985年 | 6篇 |
1984年 | 3篇 |
1983年 | 7篇 |
1982年 | 4篇 |
1981年 | 2篇 |
1980年 | 4篇 |
1975年 | 3篇 |
1973年 | 2篇 |
1970年 | 2篇 |
1969年 | 3篇 |
1966年 | 3篇 |
1955年 | 1篇 |
排序方式: 共有1346条查询结果,搜索用时 15 毫秒
181.
Currently, there is no common understanding of categorizing, conceptualizing, and measuring consumption motives in the performing arts. Study one presents the results of forty-seven semi-structured, in-depth interviews and deepens the understanding of consumption motives. A new framework consisting of cultural and social motives is introduced. This framework is tested in the second study. Here, a quantitative instrument is developed. The results of the principal components analysis refine the framework and demonstrate the following consumption motives: cultural aesthetics (with two dimensions: artistic value and enjoyment of beauty), cultural relaxation, cultural stimulation, social bonding, social attraction, social distinction, and social duty. 相似文献
182.
183.
The currency approach assumes black economies to entail larger cash volumes than those needed for transactions in the official
economy. Estimates of this hypothesis use e.g. overall cash data. But, for the case of Germany, the growing DM cash amounts
in circulation did not only accompany transactions in the national economy, they also disseminated in hoards and in international
uses. A series of adjusted cash figures is derived which shows the maximum dimension of national cash uses either for official
or black activities. The adjusted cash figures in general grew less fast than overall cash, private consumption, GDP or M1
respectively. They even diminished relative to sales figures which often are accused of being a basis for black activities.
This enhances the presumption that, contrary to some contentions in the literature, black activities during the times of the
DM-regime played a minor or even decreasing role in Germany. 相似文献
184.
185.
186.
Catherine E. de Vries Wouter van der Brug Marcel H. van Egmond Cees van der Eijk 《Electoral Studies》2011,30(1):16-28
Increasing politicization in EU member states about European issues can be expected to strengthen the impact of attitudes towards Europe on vote choice in European Parliament (EP) elections. At the same time this impact is likely to vary between voters and contexts as a function of political information. This study explores the role of political information in explaining individual and contextual heterogeneity in the degree of EU issue voting. Using a two-step hierarchical estimation procedure to explore both individual and contextual variation, we show that while EU issue voting in the 2009 EP elections is only slightly more pronounced among the politically sophisticated, it is clearly more extensive in contexts that provide higher levels of political information on European matters. 相似文献
187.
188.
Wilkinson DA Hulst AG de Reuver LP van Krimpen SH van Baar BM 《Journal of forensic sciences》2007,52(6):1272-1283
Forensic laboratories do not have the infrastructure to process or store contaminated DNA samples that have been recovered from a crime scene contaminated with chemical or biological warfare agents. Previous research has shown that DNA profiles can be recovered from blood exposed to several chemical warfare agents after the agent has been removed. The fate of four toxic agents, sulfur mustard, sodium 2-fluoroacetate, sarin, and diazinon, in a lysis buffer used in Promega DNA IQ extraction protocol was studied to determine if extraction would render the samples safe. Two independent analytical methods were used per agent, selected from GC-MS, 1H NMR, 19F NMR, (31)P NMR, or LC-ES MS. The methods were validated before use. Determinations were carried out in a semi-quantitative way, by direct comparison to standards. Agent levels in the elution buffer were found to be below the detectable limits for mustard, sarin, sodium 2-fluoroacetate or low (<0.02 mg/mL) for diazinon. Therefore, once extracted these DNA samples could be safely processed in a forensic laboratory. 相似文献
189.
Reparations for victims of gross human rights violations arebecoming an increasingly acknowledged feature in post-authoritarianand post-conflict societies coping with the legacy of a violentpast. Despite some recent progress much more work needs to bedone for massive reparations programs to respond better to theneeds of women. This article, resting as it does on a comprehensiveconception of reparations, outlines both the procedural andsubstantive components of reparations programs necessary forthe programs to fulfill the goal of providing (partial) justiceto women. 相似文献
190.
Brandão RB Martin CC Catirse AB de Castro E Silva M Evison MP Guimarães MA 《Journal of forensic sciences》2007,52(4):913-919
The objective was to investigate color change and surface damage in dental resin composites exposed to high temperatures over different time intervals for comparative purposes. Samples were prepared using two resins - Z100(R) (R1) and Charisma (R2), heated at the following temperatures: 200 degrees C, 400 degrees C, 600 degrees C, 1000 degrees C, for 15, 30 and 45 min (n = 104 for each resin sample). Color (DeltaE) and brightness (DeltaL) changes were analyzed by spectrophotometry using the CIE Lab system and surface changes by Scanning Electron Microscopy (SEM). R1 showed more intense color changes after heat exposure than R2. DeltaL values were found to be the best parameter for evaluation of light and color change. A biphasic pattern after thermal exposure was detected, from dark brown to light white. SEM showed more intense alterations in R2 than in R1. These results indicate that the parameters observed in both resins are useful as a guide in forensic analyses. 相似文献