全文获取类型
收费全文 | 1589篇 |
免费 | 36篇 |
国内免费 | 1篇 |
专业分类
各国政治 | 66篇 |
工人农民 | 46篇 |
世界政治 | 70篇 |
外交国际关系 | 76篇 |
法律 | 969篇 |
中国共产党 | 54篇 |
中国政治 | 97篇 |
政治理论 | 123篇 |
综合类 | 125篇 |
出版年
2023年 | 5篇 |
2022年 | 10篇 |
2021年 | 14篇 |
2020年 | 31篇 |
2019年 | 26篇 |
2018年 | 30篇 |
2017年 | 26篇 |
2016年 | 36篇 |
2015年 | 26篇 |
2014年 | 26篇 |
2013年 | 98篇 |
2012年 | 47篇 |
2011年 | 55篇 |
2010年 | 74篇 |
2009年 | 54篇 |
2008年 | 72篇 |
2007年 | 53篇 |
2006年 | 80篇 |
2005年 | 94篇 |
2004年 | 61篇 |
2003年 | 53篇 |
2002年 | 47篇 |
2001年 | 123篇 |
2000年 | 70篇 |
1999年 | 78篇 |
1998年 | 36篇 |
1997年 | 6篇 |
1996年 | 3篇 |
1995年 | 8篇 |
1994年 | 5篇 |
1993年 | 9篇 |
1992年 | 22篇 |
1991年 | 19篇 |
1990年 | 41篇 |
1989年 | 28篇 |
1988年 | 29篇 |
1987年 | 23篇 |
1986年 | 15篇 |
1985年 | 13篇 |
1984年 | 8篇 |
1983年 | 10篇 |
1982年 | 11篇 |
1981年 | 8篇 |
1980年 | 4篇 |
1979年 | 11篇 |
1978年 | 7篇 |
1973年 | 2篇 |
1971年 | 4篇 |
1970年 | 3篇 |
1968年 | 2篇 |
排序方式: 共有1626条查询结果,搜索用时 0 毫秒
981.
982.
Lance Y. Hunter David J. Bennett Joseph W. Robbins 《Terrorism and Political Violence》2018,30(3):503-523
In democracies with stable party systems, voters can more easily trace policy decisions from parties and representatives within the government to specific policy outcomes. Consequently, party system stability (PSS) has been reportedly linked to a variety of factors including economic conditions, democratic performance, political institutions, and socioeconomic cleavages. While informative, these lessons offer precious little insight into other factors that can destabilize a party system. In this work, we surmise that terrorist attacks have important implications for two commonly used measures of PSS. The results of a pooled, cross-sectional time series analysis confirm our hypothesis: deadly attacks proximate to elections destabilize party systems, even when controlling for multiple standard controls. In addition, the level of democratic consolidation within states also influences the degree that fatal terrorist attacks affect party system stability. These findings are based on terrorism data collected from the Global Terrorism Database and from PSS data compiled by the authors. 相似文献
983.
Proteins in 68 vaginal secretions from 50 women were analyzed by SDS-polyacrylamide gel electrophoresis (SDS-PAGE). Although there were considerable numbers of intermediate types, the secretions could be classified into the following groups based on the densitometric patterns. A relatively low concentration of 67K protein (albumin) and a high concentration of 52K protein (IgG) were the patterns common to pre- and post-menstrual phases and pregnant stadium. A relatively high concentration of the 67K protein and a moderate concentration of the 52K protein characterized the midcycle. A considerably high concentration of 67K protein compared with the 79K (transferrin), 58K (IgA) and 52K bands was the pattern for menstrual phase and postpartum stage. 相似文献
984.
An application of a quantitative analytical system for the grading of pulmonary fat embolisms 总被引:1,自引:0,他引:1
The severity of pulmonary fat embolism in 5 autopsied cases has been measured using a quantitative image analytical system. With reference to the mean size of the fat emboli, the cases were divided into 2 groupings regardless of the number of the emboli. The mean sizes of the emboli in 3 cases of the first group were significantly larger (about 490-600 microns 2) than those found in the 2 cases of the other group (about 220 and 235 microns 2). An investigation into the localization of fat emboli revealed that more were lodging in the small arteries and arterioles in the first group than in the second. Our results have indicated that a reliable grading of pulmonary fat embolism can not be established without a quantitative image analysis of the size and localization of the fat emboli, and that this quantitative analytical method is useful in achieving this reliable grading. 相似文献
985.
A 5-month-old male infant with no history of serious illness died suddenly and unexpectedly. He was found dead under a heavy 'futon', a coverlet, which covered the whole of his body. As it was suspected he may have been smothered, a medicolegal autopsy was performed, and it was discovered that the infant had Ebstein's anomaly with double mitral valve. The cause of death appeared to be due to heart failure caused by this congenital heart disease. 相似文献
986.
Changes in methemoglobin (Met-Hb) concentrations during storage of whole blood and a hemolysate at refrigerated or various freezing temperatures were examined using experimentally prepared blood samples. When whole blood was stored at 3 degrees C, rapid reduction of Met-Hb was observed in the nitrite-treated blood whereas neither reduction nor formation of Met-Hb was observed in the untreated and heated blood within 7 days. When hemolysate was stored at 3 degrees C, Met-Hb concentrations were stable within a few days regardless of the initial values. However, slight autoxidation was observed 7 days after storage in the untreated and heated blood. When whole blood was stored at various freezing temperatures, Met-Hb concentrations were practically stable until at least 30 days at -80 degrees C or -196 degrees C regardless of the initial values, although considerable autoxidation was observed at -30 degrees C especially in the blood containing small amounts of Met-Hb. Based on the results obtained, a new method was devised for long-term storage of whole blood at extremely low temperatures for Met-Hb determinations. 相似文献
987.
间接持有证券的权益性质与法律适用初探 总被引:6,自引:0,他引:6
间接持有是国际证券持有的主流模式。在间接持有证券的权益性质界定方面,主要存在两种方式一是将其纳入经过扩展的所有权范畴,二是专门为其创制新的权利形式。在跨境间接持有证券的法律适用方面,相关中间人所在地原则(PRIMA)正获得日益广泛的接受。随着中国证券市场逐步对外开放,间接持有尤其是跨境间接持有将日益增多,目前对其权益性质和法律适用等关键问题的规定亟需完善。 相似文献
988.
廖继红 《黑龙江省社会主义学院学报》2006,(4)
构建和谐社会是中国政党的政治责任。民主党派在构建社会主义和谐社会中具有重要优势。要充分发挥民主党派的优势作用,实现我国政党关系长期和谐。 相似文献
989.
廖济忠 《国家教育行政学院学报》2006,106(10):19-22
人的发展意味着人的社会化程度不断提高。社会化教育对大学生的综合素质培养有着实化和优化的积极作用,它应包含理想的社会化、知识的社会化、角色的社会化等主要内容。社会化教育应针对三个基本目标展开:即让大学生了解社会、让社会了解大学生、让大学生了解自己。 相似文献
990.