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   75篇
  免费   6篇
管理学   5篇
民族学   1篇
人才学   2篇
人口学   7篇
理论方法论   9篇
社会学   46篇
统计学   11篇
  2024年   1篇
  2023年   1篇
  2022年   1篇
  2021年   1篇
  2020年   4篇
  2019年   3篇
  2018年   7篇
  2017年   7篇
  2016年   7篇
  2015年   1篇
  2014年   3篇
  2013年   10篇
  2012年   12篇
  2011年   3篇
  2009年   2篇
  2008年   4篇
  2005年   3篇
  2004年   2篇
  2003年   1篇
  2001年   2篇
  1997年   1篇
  1995年   1篇
  1993年   2篇
  1991年   1篇
  1986年   1篇
排序方式: 共有81条查询结果,搜索用时 15 毫秒
1.
Puerto Rican migration to the US has been a more or less continuous process since 1917. The perspective of viewing return migration as a circulation process suggests that there are entries, exits, and reintergration into the metropolitan labor market. This study explores the circulatory movements of Puerto Rican families, events that influence the adaptation process when returning to Puerto Rico, and cultural identity aspects. Data collected by means of 2 research instruments that were administered to the respondents simultaneously were used: 1) a life history matrix and 2) an open-ended questionnaire. These interviews outlined the principal problems of adaptation as mentioned by the circulating migrants. The most difficult problems to adjust to were economic and employment (58%), followed by social acceptance (23%), education (17%), and language (15%). Transportation, medical services, and recreational facilities were also problems mentioned as being significant. It is expected that a great majority of migrant laborers will go to live in immigrant residential locations in large US cities. It is also expected that these migrants will meet with certain value conflicts by living in urban ghettos. These families will have serious difficulties finding economic stability and will possibly consider migrating once again as an alternative to their social reality. This study illustrates that: 1) the migrants return in family groups; 2) they face discriminatory problems in employment agencies and schools; 3) they look forward to a formal education as a means of social mobility; 4) they identify themselves with values, habits, and Puerto Rican traditions; and 5) they value the quality of life in Puerto Rico.  相似文献   
2.
Does the life cycle of economic papers differ across fields of economic research? By constructing and analyzing a large dataset that combines information on 9,672 articles published in the top five economic journals from 1970 to 2000 with detailed yearly citation data obtained from Google Scholar, we find that published articles do have a life cycle that differs across fields of economic research (which we divide into the categories of applied, applied theory, econometric methods, and theory). Applied and applied theory papers are the clear winners in terms of citation counts. For the first years after their publication, they receive higher numbers of citations per year than papers in other fields of research do. They also reach a higher peak number of citations per year and apparently sustain those peak levels for longer, in addition to being cited over longer periods of time (i.e., they have a longer lifespan). Citation patterns are much less favorable for theoretical papers, which are the object of fewer citations per annum in the first years following publication, have lower peak numbers and a shorter lifespan. Econometric method papers are a special case; the pattern for most of these papers is similar to the pattern for theory papers, but the most successful papers (as measured by the number of citations) on econometric methods are also the most successful papers in the entire discipline of economics. (JEL A14)  相似文献   
3.
Today's data-heavy research environment requires the integration of different sources of information into structured datasets that can not be analyzed as simple matrices. We introduce an old technique, known in the European data analyses circles as the Duality Diagram Approach, put to new uses through the use of a variety of metrics and ways of combining different diagrams together. This issue of the Annals of Applied Statistics contains contemporary examples of how this approach provides solutions to hard problems in data integration. We present here the genesis of the technique and how it can be seen as a precursor of the modern kernel based approaches.  相似文献   
4.
Urban Ecosystems - The Andes region is one of the fastest urbanizing regions of the world. The current rate of environmental degradation of streams in this region create an urgent need for...  相似文献   
5.
6.
Urban Ecosystems - Urbanization results in major changes in stream morphology, hydrology, and water quality; the consequences on fish assemblage of Neotropical urban streams remain poorly...  相似文献   
7.
This paper describes the methodology and main results from an overall assessment on future achievement of sustainable development goals. The proposed approach consists of a model-based, looking forward composite sustainable development index—FEEM sustainability index—projected to the future. It represents a first experiment to reproduce the future dynamics of sustainable development indicators over time and worldwide and to assess future sustainability under different scenarios. The assessment presented here is relevant under different viewpoints. First, it has a very broad nature in terms of both geographical coverage and meaningfulness: it considers the multi-dimensional structure of sustainable development by combining relevant indicators belonging to economic, social and environmental pillars for the whole world. Second, the modelling framework to compute future trends of indicators relies upon a recursive-dynamic computable general equilibrium model. This is an ideal tool to look simultaneously at the development of many indicators, their potential interactions and trade-offs, and more in general to the consequences of economic development and/or policies aiming to increase performance in one or more indicators; it allows measuring the overall sustainability under alternative scenarios, across countries and over time. Finally, regarding the construction of the composite indicator, the application of fuzzy measures and Choquet integral increases substantially the model capability allowing taking into account the interactions that exist among the three main pillars of sustainability and the considered indicators.  相似文献   
8.
This special issue is an outcome of the 2017 Global Innovation and Knowledge Academy (GIKA) Conference, which took place at ISEG School of Economics and Management, Lisbon, Portugal, between June 28th and 30th, 2017. As the seventh of its kind, the 2017 GIKA Conference continued to attract the attention of scholars from around the world, receiving more than 600 submissions, only 300 of which were accepted for presentation at the conference. The topic of this special issue—the relation between coopetition and innovation/entrepreneurship—had an own track at the GIKA Conference, which served as a first round review for some of the submissions to the journal. The special issue was also open for external submissions.  相似文献   
9.
Same parliaments, to form a committee of size $q$ , use a voting process like the following: every parliamentary member votes for one out of a fixed set of candidates, and those $q$ candidates receiving more votes are elected for the committee. Assuming total discipline of vote, this is a game form in which players are the parliamentary groups. We investigate, according to some natural hypotheses about preferences, the likely distribution of the members of this committee. The main results are: (a) when fractional votes are allowed, there is a complete agreement between the distribution among the groups of the elected candidates that are outcomes of a Nash equilibrium and the distribution that, according to the size of the groups, would compute the Jefferson-d’Hondt allocation rule, and (b) when fractional votes are not allowed, there is a near agreement for a majority of situations.  相似文献   
10.
Counterframing scholars typically identify counterframes that interpretively distinguish arguments among opponents. This approach assumes that counterframing strategy centers on directly countering the claims of protesters. In my in‐depth examination of the ongoing debate between protesters and officials of the former School of the Americas, I identify a form of counterframing that agrees with and embraces the moral alternatives implicit in accusers’ claims. I bring boundary construction theory into conversation with counterframing analysis to expand understanding of how framing and counterframing strategies revolve around the competition for common, moral resources. I explain that in the movement to close the School of the Americas, protesters’ claims have served as moral boundaries against which the targeted institution has redefined its objectives and programs. I introduce the concept of “boundary negotiation” to argue that counterframing strategy and success lie in the negotiation of moral boundaries called into question by social movements. I outline defensive and offensive modes of boundary negotiation and identify boundary negotiation as a mechanism driving the link between counterframing and demobilization.  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