全文获取类型
收费全文 | 897篇 |
免费 | 50篇 |
专业分类
各国政治 | 74篇 |
工人农民 | 89篇 |
世界政治 | 79篇 |
外交国际关系 | 47篇 |
法律 | 438篇 |
中国共产党 | 1篇 |
中国政治 | 6篇 |
政治理论 | 211篇 |
综合类 | 2篇 |
出版年
2024年 | 2篇 |
2023年 | 7篇 |
2022年 | 6篇 |
2021年 | 9篇 |
2020年 | 31篇 |
2019年 | 38篇 |
2018年 | 51篇 |
2017年 | 56篇 |
2016年 | 57篇 |
2015年 | 29篇 |
2014年 | 49篇 |
2013年 | 148篇 |
2012年 | 31篇 |
2011年 | 40篇 |
2010年 | 35篇 |
2009年 | 32篇 |
2008年 | 24篇 |
2007年 | 32篇 |
2006年 | 24篇 |
2005年 | 35篇 |
2004年 | 26篇 |
2003年 | 36篇 |
2002年 | 30篇 |
2001年 | 8篇 |
2000年 | 9篇 |
1999年 | 5篇 |
1998年 | 8篇 |
1997年 | 8篇 |
1996年 | 9篇 |
1995年 | 10篇 |
1994年 | 4篇 |
1993年 | 5篇 |
1992年 | 4篇 |
1991年 | 8篇 |
1990年 | 3篇 |
1989年 | 6篇 |
1988年 | 4篇 |
1987年 | 7篇 |
1986年 | 4篇 |
1985年 | 3篇 |
1984年 | 2篇 |
1983年 | 2篇 |
1982年 | 2篇 |
1980年 | 3篇 |
1979年 | 2篇 |
1978年 | 2篇 |
1976年 | 1篇 |
排序方式: 共有947条查询结果,搜索用时 15 毫秒
931.
Histological Changes in the Thyroid Gland in Cases of Infant and Early Childhood Asphyxia—A Preliminary Study 下载免费PDF全文
A retrospective blinded study of thyroid gland histology was undertaken in 50 infants and young children aged from 1 to 24 months. Deaths were due to (i) suffocation (N = 7), hanging (4), wedging (3), and chest and/or neck compression (4), and (ii) SIDS (20), noncervical trauma (7), organic disease, (4) and drug toxicity (1). In the asphyxia group (N = 18), thyroid gland congestion ranged from 0 to 3+ with 39% of cases (7/18) having moderate/marked congestion. In three cases, focal aggregates of red blood cells (blood islands) were observed within the intrafollicular colloid. These deaths involved chest compression, chest and/or neck compression, and crush asphyxia in a vehicle accident, and all had facial petechiae. Only 22% of the 32 control cases (7/32) had moderate/marked congestion with no blood islands being identified (p < 0.05). Blood islands within the thyroid gland may be caused by congestion associated with crushing or compression and may provide supportive evidence for this diagnosis. 相似文献
932.
Carla Sofia Silva Maria Manuela Calheiros Helena Carvalho 《Journal of family violence》2016,31(2):147-159
The Security in the Interparental Subsystem Scale (SIS) is based on emotional security theory. This study examined the psychometric properties of an adaptation of the SIS to a sample of Portuguese adolescents (60.3 % girls; 10 to 18 years old; Mage?=?13 years; N?=?229), recruited in public schools. Discriminant and concurrent validity were assessed by analyzing SIS dimensions associations with adolescents’ exposure to interparental conflict (IC), and psychological adjustment, respectively. Exploratory and confirmatory factor analyses of the SIS supported a six-factor solution, with satisfactory internal consistency. Evidence for discriminant and concurrent validity was provided: most SIS dimensions significantly discriminated between adolescents exposed to higher vs. lower levels of IC; and a significant positive association between emotional reactivity and adolescents’ externalizing symptoms was found. These findings suggest that the SIS is a reliable tool for assessing adolescents’ emotional insecurity in the interparental relationship within the context of this sample. 相似文献
933.
Ítalo de Macedo Bernardino Kevan Guilherme Nóbrega Barbosa Lorena Marques da Nóbrega Gigliana Maria Sobral Cavalcante Renata de Castro Martins Sérgio d’Avila 《Journal of family violence》2016,31(5):617-624
The objective of this study was to characterize the profile of men who are victims of interpersonal physical violence (IPV) by an intimate partner. This study is a retrospective analysis of suspected cases of male victims of IPV by an intimate partner, aged 18 years or older, treated at a Forensic Medicine and Dentistry Center in Brazil. Sociodemographic variables of the victims, the types of violence and the patterns of injuries were evaluated. Over this period, 1520 suspected victims of IPV by an intimate partner were examined; 14.6 % (n = 222) of them were men. Based on Multiple Correspondence Analysis (MCA) two dimensions were formed: the first dimension (internal reliability = 0613) was primarily formed by the relationship between aggressor and victim, the marital status and the type of IPV, and the second dimension (reliability = 0509) by the day of week, the period of day and the marital status. 相似文献
934.
For a long time the question of to what extent party choice in the European Parliament (EP) elections is primarily dependent on voters’ orientations towards the European Union (EU) or just a mere reflection of orientations towards issues and actors in national politics has been debated. By combining insights from individual‐level models of party choice in second‐order elections with theories of sequential decision making this article investigates if, how and at what stages in the decision process attitudes to European integration matters for party choice. In line with previous work on first and second decision rule criteria in EP elections, this article develops and tests hypotheses about how voters’ orientations work at different stages of the voter decision process. The findings, based on Swedish data from a probability‐based three‐wave Internet campaign panel, indicate that many voters are in fact considering more than one party to vote for in the beginning of the election campaign. As expected, left‐right orientations function as a main decision rule with respect to which parties voters even consider voting for, while proximity on the European integration dimension mainly matters as a second decision rule in the final stage of the decision process. Using a sequential model with consideration and choice stages, the article reveals a much larger complimentary effect of EU proximity on party choice than has generally been found in previous research. This serves as a distinct contribution to the emerging research field of individual party choice in second‐order elections. 相似文献
935.
Generalized social trust has been argued to have positive effects for both individuals and society, but despite solid theoretical arguments in favour of different contextual effects, the empirical evidence remains scant. We here examine whether and how the effect of generalized trust on the propensity to become politically active is moderated by the level of generalized trust in society. We inspect two different causal mechanisms: The rainmaker effect, which entails that the effect of generalized trust is weaker at the individual level when there is a high level of generalized trust in society; and the sunmaker effect, which entails that the effect of generalized trust is strengthened by a high level of generalized trust in society. We examine the links for three forms of political participation: voting, institutionalized participation, and non-institutionalized participation. The data come from the fourth round of the European Social Survey from 2008 [European Social Survey. (2008). Data file edition 4.0. Norwegian Social Science Data Services, Norway—Data Archive and distributor of ESS data], and we include 47,489 respondents in 25 democratic countries. The results from a series of multilevel logistic regressions suggest that the effect of generalized trust varies depending on the level of generalized trust in the surrounding community but the causal mechanisms differ for different kinds of political participation. 相似文献
936.
937.
Many government agencies in Canada are using social media to communicate with various audiences. Some research, however, shows that government uses social media to publish content available on its websites and does not engage in two‐way interactions. This article examines interaction on Twitter between Immigration, Refugees and Citizenship Canada (IRCC) and Twitter users. It explores established government social media practices and under‐researched experiences and perspectives of government social media users. Although some of the findings are IRCC specific, users’ experiences and perspectives offer valuable insights for any government agency that uses social media. 相似文献
938.
This introductory essay reviews the literature on historical legacies in the post-communist area and relates it to the study of enlargement and Europeanisation. The authors develop a framework for the special section, specify various ways in which historical legacies can be conceived of affecting conditionality and compliance, give an overview of the contributions and summarise the findings. 相似文献
939.
Maria Tsiapa 《欧亚研究》2016,68(7):1197-1219
This article studies how spatial heterogeneity (by urban concentration) and economic heterogeneity (by economic dualism), which are being affected by trade integration with the EU, influence the growth of European Neighbourhood Policy countries (ENPs). It is proved that urban concentration is not always related to growth. Furthermore, the eastern and southern areas of the ENPs represent two different cases of heterogeneity. In the eastern ENPs the pattern of heterogeneity seems to generate more benefits for the metropolitan region and the country in comparison with the southern ENPs in which population accumulations do not function as critical foundations of their development process. 相似文献
940.