首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   191篇
  免费   11篇
各国政治   16篇
工人农民   20篇
世界政治   29篇
外交国际关系   15篇
法律   87篇
中国政治   4篇
政治理论   31篇
  2023年   2篇
  2022年   3篇
  2021年   5篇
  2020年   8篇
  2019年   11篇
  2018年   19篇
  2017年   12篇
  2016年   15篇
  2015年   6篇
  2014年   13篇
  2013年   24篇
  2012年   20篇
  2011年   6篇
  2010年   5篇
  2009年   11篇
  2008年   3篇
  2007年   4篇
  2006年   5篇
  2005年   5篇
  2004年   3篇
  2003年   6篇
  2002年   4篇
  2001年   3篇
  1999年   3篇
  1998年   1篇
  1994年   1篇
  1993年   1篇
  1990年   1篇
  1989年   2篇
排序方式: 共有202条查询结果,搜索用时 0 毫秒
41.
ABSTRACT

This article presents an analytical framework that guides the contributions to this special issue and, in general terms, aims at enabling a systematic investigation of processes of negotiation in the international promotion of democracy. It first briefly introduces the rationale for studying democracy promotion negotiation, offers a definition, and locates the general approach within the academic literature, bringing together different strands of research, namely studies of negotiation in international relations as well as research on democratization and democracy promotion. The larger part of the article then discusses key concepts, analytical distinctions and theoretical propositions along the lines of the three research questions that are identified in the introduction to this special issue. More specifically, the article (1) offers a typology that facilitates a systematic empirical analysis of the issues that are discussed in democracy promotion negotiations; (2) takes initial steps towards a causal theory of democracy promotion negotiation by identifying and discussing a set of parameters that can be expected to shape such negotiations; and (3) introduces key distinctions and dimensions that help guide empirical research on the output and outcome of negotiations in democracy promotion.  相似文献   
42.
Studying European Politics can be a challenge! And this is not surprising: even the best scholarly minds of European politics often struggle to give precise definition to such a young, but already so complex and constantly evolving polity as the European Union, and are increasingly at odds with identifying its prospects for survival. One way to achieve a better understanding of the subject is to utilize a threshold concept approach, which is essentially a "less is more" approach that chooses to work with a few "founding" concepts, and identifies a "road map" for independent learning of broader but essentially inter-connected issues of the discipline. The threshold concept approach becomes even more effective if combined with enactive learning—that is, learning-by-doing, through role taking and simulation of the threshold concepts during seminars. Such learning evidently exceeds the boundaries of conventional knowledge and becomes a useful transferable investment for the future.  相似文献   
43.
Sex estimation is considered one of the first steps in the forensic identification process. Morphological and morphometrical differences between males and females have been used as means for morphoscopic and metric methods on both cranial and postcranial skeletal elements. When dry skeletal elements are not available, virtual data can be used as a substitute. The present research explores 3-dimensional (3D) scans from a Turkish population to test a sex estimation method developed by Purkait (2005).Overall, 296 individuals were used in this study (158 males and 138 females). Purkait’s triangle parameters were measured on computed tomography (CT) scans obtained from both right and left femora of each patient at the Bakirkoy Dr. Sadi Konuk Training Research Hospital (Istanbul, Turkey). Intra- and inter-observer errors were assessed for all variables through technical error of measurements analysis. Bilateral asymmetry and sex differences were evaluated using parametric and non-parametric statistical approaches. Univariate and multivariate discriminant function analyses were then conducted.Observer errors demonstrated an overall agreement within and between experts, as indicated by technical error of measurement (TEM) results. No bilateral asymmetries were reported, and all parameters demonstrated a statistically significant difference between males and females. Fourteen discriminant models were generated by applying single and combined parameters, producing a total correct sex classification ranging from 78.4% to 92.6%. In addition, over 67% of the total sample was accurately classified, with 95% or greater posterior probabilities.Our study demonstrates the feasibility of 3D sex estimation using Purkait’s triangle on a Turkish population, with accuracy rates comparable to those reported in other populations. This is the first attempt to apply this method on virtual data and although further validation and standardisation are recommended for its application on dry bone, this research constitutes a significant contribution to the development of population-specific standards when only virtual data are available.

Key points

  • CT analysis using Purkait’s triangle is a suitable tool for assessment of sex in unidentified individuals.
  • The best overall estimation rate was achieved with the F11 model, with around 92% of accuracy.
  • The results suggested 78.4% to 92.6% correct sex identification rates.
  • More research is needed to expand the sample set and verify the results.
  相似文献   
44.
Many studies have empirically demonstrated the importance of trust-building between mediators and parties to a dispute. We wrote this article in response to a call by Stephen Goldberg and Margaret Shaw for studies conducted in North America to be triangulated in other countries where mediation is taking off as an alternative tool in the resolution of disputes. Our objective was to test theories on the factors that increase trust-building in mediation. With this in mind, the study conducted by Jean Poitras in Montreal (Canada) was triangulated in the Balearic Islands (Spain) and an analysis was made of the similarities and differences between both studies using different methods.  相似文献   
45.
Stress-induced cardiomyopathy (SICM) is characterized by transient systolic dysfunction of the apical and/or midventricular myocardial segments in the absence of obstructive coronary artery disease and is unique in that it can manifest itself after acute emotional stress. Excessive amounts of catecholamines released from sympathetic nerve endings as well as from the adrenal medulla under stressful conditions are considered to produce intracellular Ca(2+) overload and cardiac dysfunction through the β(1)-adrenoceptor signal transduction pathway. We describe the clinical and pathomorphological findings in two stress-induced cardiomyopathy fatal cases. Levels of catecholamines and their metabolites in urine samples were assessed too. Morphological patterns seen in SICM result from the complex interplay between sympathetic innervations, β-receptor density and function and catecholamine sensitivity.  相似文献   
46.
In this paper, we investigate whether the school desegregation produced by court‐ordered desegregation plans persists when school districts are released from court oversight. Over 200 medium‐sized and large districts were released from desegregation court orders from 1991 to 2009. We find that racial school segregation in these districts increased gradually following release from court order, relative to the trends in segregation in districts remaining under court order. These increases are more pronounced in the South, in elementary grades, and in districts where prerelease school segregation levels were low. These results suggest that court‐ordered desegregation plans are effective in reducing racial school segregation, but that their effects fade over time in the absence of continued court oversight.  相似文献   
47.
48.
The purpose of this study is to clarify the chronology of different stages of dental development, according to Demirjian, in a sample of Spanish children, which will enable us to build a database that will be used as a reference in regard to the dental development of individuals of our socio-geographic environment. In the same studied sample, a calculation of the dental age according to Demirjian was carried out. This study was conducted in a final sample consisting of 1010 orthopantograms, corresponding to Spanish children (485 boys and 525 girls) ages 2-16. Comparing the age of onset of the different stages among the children, evidence was found that girls had an earlier general development than boys. These differences were only statistically significant in teeth and concrete stages. The canine teeth revealed greater gender dimorphism, with significant differences in all stages compared with the upper canines. The method proposed by Demirjian for dental age calculation resulted in a significant overestimation of dental age in relation to the chronological age in boys (average of 0.87 years) and girls (average of 0.55 years). Data from this study may be used as reference for dental maturity, as well as a standard for estimating age in Spanish children.  相似文献   
49.
50.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号