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   870篇
  免费   38篇
各国政治   111篇
工人农民   67篇
世界政治   71篇
外交国际关系   60篇
法律   404篇
中国政治   65篇
政治理论   126篇
综合类   4篇
  2023年   9篇
  2022年   9篇
  2021年   23篇
  2020年   29篇
  2019年   32篇
  2018年   44篇
  2017年   52篇
  2016年   43篇
  2015年   36篇
  2014年   40篇
  2013年   103篇
  2012年   63篇
  2011年   83篇
  2010年   29篇
  2009年   17篇
  2008年   41篇
  2007年   29篇
  2006年   32篇
  2005年   29篇
  2004年   42篇
  2003年   34篇
  2002年   24篇
  2001年   19篇
  2000年   8篇
  1999年   4篇
  1998年   1篇
  1997年   8篇
  1996年   3篇
  1995年   1篇
  1994年   4篇
  1993年   3篇
  1992年   1篇
  1991年   3篇
  1990年   1篇
  1989年   1篇
  1988年   1篇
  1987年   1篇
  1986年   1篇
  1983年   1篇
  1978年   1篇
  1967年   2篇
  1959年   1篇
排序方式: 共有908条查询结果,搜索用时 15 毫秒
211.
This article investigates the impact of trade‐based social clauses on labor rights enforcement. Drawing on insights from recent theoretical work on transnational advocacy networks and labor rights, the study examines how transnational groups and domestic actors engage the labor rights mechanisms under the NAFTA labor side agreement, the NAALC. A statistical analysis of original data drawn from NAALC cases complements interviews with key participants to analyze the factors that predict whether the three national mediation offices review labor dispute petitions. This study suggests that transnational activism is a key factor in explaining petition acceptance. Transnational advocates craft petitions differently from other groups and, by including worker testimony in the petitions, signal to arbitration bodies the possibility of corroborating claims through contact with affected workers.  相似文献   
212.
Agroecology has played a key role in helping Cuba survive the crisis caused by the collapse of the socialist bloc in Europe and the tightening of the US trade embargo. Cuban peasants have been able to boost food production without scarce and expensive imported agricultural chemicals by first substituting more ecological inputs for the no longer available imports, and then by making a transition to more agroecologically integrated and diverse farming systems. This was possible not so much because appropriate alternatives were made available, but rather because of the Campesino-a-Campesino (CAC) social process methodology that the National Association of Small Farmers (ANAP) used to build a grassroots agroecology movement. This paper was produced in a 'self-study' process spearheaded by ANAP and La Via Campesina, the international agrarian movement of which ANAP is a member. In it we document and analyze the history of the Campesino-to-Campesino Agroecology Movement (MACAC), and the significantly increased contribution of peasants to national food production in Cuba that was brought about, at least in part, due to this movement. Our key findings are (i) the spread of agroecology was rapid and successful largely due to the social process methodology and social movement dynamics, (ii) farming practices evolved over time and contributed to significantly increased relative and absolute production by the peasant sector, and (iii) those practices resulted in additional benefits including resilience to climate change.  相似文献   
213.
Traditionally, the determination of the territorial scope of the statutory rights conferred by employment legislation forming part of English law has been regarded as an issue entirely disconnected from the choice‐of‐law process. Indeed, this view formed the basis of the key decision addressing the problem of territoriality, Lawson v Serco, decided by the House of Lords in 2006. After presenting the current state of the law with regard to the territorial scope of employment legislation, this article takes a critical look at Lawson v Serco. It is argued that the ‘European’ choice‐of‐law rules must have a greater importance for determining the territorial scope of employment legislation and, consequently, that the approach pursued in Lawson v Serco is no longer correct, if it ever was, and should not be followed in the future.  相似文献   
214.
Four experiments, one in each season, were carried out during 2004 in a rural area of Córdoba, central Argentina. Two pigs (Sus scrofa L.), weighing approximately 8 kg each, were used in each of the four experiments. The animals were killed by a sharp blow to the head and immediately placed in an appropriate arthropod trap. One pig was placed in the shade and the other under direct sunlight. This research was conducted to determine the seasonal structure and dynamics of arthropods that constitute the sarcosaprophagous community in a given area of the central region of Argentina. The decomposition process was divided into five stages: fresh, bloated, decay, advanced decay and dry. The duration of each stage varied in different seasons, showing that the temperature and humidity are the most important variables that influence this process. A total of 51,500 adults and 36,909 immature were collected. More than 80% of the specimens collected belong to Insecta, and within this, Diptera were the most abundant order. The flies were mainly represented by adults and immature of the following species: Chrysomya albiceps (Wiedemann) (Calliphoridae), Musca domestica Linnaeus (Muscidae) and Fannia femoralis (Stein) (Fanniidae). Coleoptera were mainly represented by adults and immature of the species Creophilus maxillosus (Linnaeus) (Staphylinidae) and Dermestes maculatus (Geer) (Dermestidae). More than 50% of hymenopteran fauna collected belong to Formicidae. The trophic levels associated with the decomposition of the remains included five categories: necrophagous, parasites and predators of the necrophagous species, omnivores, opportunists and adventives. During faunal succession a strong dominance of the necrophagous species of the family Calliphoridae and Muscidae was observed, mainly during the early stages of decay process in all seasons.  相似文献   
215.
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   
216.
In Germany, both the number of patients treated in forensic psychiatric hospitals and the average inpatient treatment period have been increasing for over thirty years. Biographical and clinical factors, e.g., the number of prior offences, type of offence, and psychiatric diagnosis, count among the factors that influence the treatment duration and the likelihood of discharge. The aims of the current study were threefold: (1) to provide an estimate of the German forensic psychiatric patient population with a low likelihood of discharge, (2) to replicate a set of personal variables that predict a relatively high, as opposed to a low, likelihood of discharge from forensic psychiatric hospitals, and (3) to describe a group of other factors that are likely to add to the existing body of knowledge. Based on a sample of 899 patients, we applied a battery of primarily biographical and other personal variables to two subgroups of patients. The first subgroup of patients had been treated in a forensic psychiatric hospital according to section 63 of the German legal code for at least ten years (long-stay patients, n=137), whereas the second subgroup had been released after a maximum treatment period of four years (short-stay patients, n=67). The resulting logistic regression model had a high goodness of fit, with more than 85% of the patients correctly classified into the groups. In accordance with earlier studies, we found a series of personal variables, including age at first admission and type of offence, to be predictive of a short or long-stay. Other findings, such as the high number of immigrants among the short-stay patients and the significance of a patient's work time before admission to a forensic psychiatric hospital, are more clearly represented than has been observed in previous research.  相似文献   
217.
In recent years, both scientific and judicial sources have highlighted the need for more knowledge about minutiae variability, in order to improve their statistical application to fingerprint identification. In line with this trend toward improving our knowledge of this subject, the aim of the present study was to calculate the frequency with which 20 types of minutiae appeared in 2780 fingerprint impressions obtained from 278 individuals from two Argentinian population samples (100 individuals from Ramal and 178 from Puna-Quebrada). The different types of minutiae were located, identified, and quantified visually in two areas on the fingerprint, the inside and outside of a circle, the radius of which cut fifteen ridges perpendicularly, starting from the center cut of the axes defining the sectors. The non-equiprobability found in both population samples for the different minutiae types studied demonstrated that the evidential weight provided by these characteristics is not the same when applied in identification processes, whether used quantitatively (numerical standard) or qualitatively (holistic method). The results obtained for both populations were compared statistically with those published previously for a Spanish population sample, which had been collected using the same methodology. This comparison has enabled us to demonstrate, for the first time, the existence of significant differences between populations in minutiae frequencies, independently from the main pattern type.  相似文献   
218.
人们对中国2008年大部制改革充满着诸多期待。基于五大部委的实证调研,可以发现改革取得了明显成效,也发现因缺乏系统性理论研究、整体安排、政策支撑和法制保障以及部门利益作祟、资源割据盛行、平行等差掣肘等造成改革未能实现预期目标。本文认为,下一步完善大部制改革的两个关键是构建科学的大部制和科学地构建大部制。  相似文献   
219.
The recent accounts of the new war paradigm have been thoroughly scrutinized in a variety of disciplines from security studies and international relations to political economy. The general trend is to focus on the scope, methods, tactics, strategies, forms of war, and/or the level of atrocity. However, there has been little sustained attempt to assess structural causes and the arguments about the changing aims of contemporary warfare. This paper provides a critical analysis of the macro sociological accounts of the new war paradigm with a spotlight on the purpose and causes of the recent wars. The author argues that despite the development of elaborate models, the sociology of contemporary warfare rests on shaky foundations and hence fails to convince. Rather than witnessing a dramatic shift in the causes and objectives of contemporary violent conflict, one encounters a significant transformation in the social and historical context in which these wars are waged.  相似文献   
220.
This note summarises our replication study ‘Housing, Health, and Happiness’, henceforth HHH2009, which constitutes an important paper in the literature of housing and slum upgrading. The original authors conduct a quasi-experimental impact evaluation of ‘Piso Firme’, an intervention that replaced in-house dirt floors with cement in Mexico. We conduct a Pure Replication (PR), a Measurement and Estimation Analysis (MEA), and a Theory of Change Analysis (TCA). In our PR, we did not find any major discrepancy with the original study. In the MEA, we generally find the results to be strongly robust to different types of alternative analysis. Finally, in TCA we explore a dimension that was not reported on the published version of the study and found that households with high initial levels of cement-floor coverage benefitted significantly less from Piso Firme’s intervention. These findings are discussed in greater detail on International Initiative for Impact Evaluation’s (3ie) working paper version.  相似文献   
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