全文获取类型
收费全文 | 437篇 |
免费 | 37篇 |
专业分类
管理学 | 51篇 |
民族学 | 7篇 |
人口学 | 38篇 |
理论方法论 | 24篇 |
综合类 | 3篇 |
社会学 | 239篇 |
统计学 | 112篇 |
出版年
2024年 | 1篇 |
2023年 | 3篇 |
2022年 | 10篇 |
2021年 | 11篇 |
2020年 | 28篇 |
2019年 | 22篇 |
2018年 | 39篇 |
2017年 | 40篇 |
2016年 | 28篇 |
2015年 | 10篇 |
2014年 | 14篇 |
2013年 | 79篇 |
2012年 | 77篇 |
2011年 | 17篇 |
2010年 | 12篇 |
2009年 | 12篇 |
2008年 | 8篇 |
2007年 | 8篇 |
2006年 | 6篇 |
2005年 | 5篇 |
2004年 | 7篇 |
2003年 | 3篇 |
2002年 | 6篇 |
2001年 | 7篇 |
2000年 | 3篇 |
1999年 | 7篇 |
1998年 | 1篇 |
1997年 | 1篇 |
1996年 | 2篇 |
1993年 | 3篇 |
1991年 | 1篇 |
1987年 | 1篇 |
1985年 | 1篇 |
1968年 | 1篇 |
排序方式: 共有474条查询结果,搜索用时 46 毫秒
381.
Guerreiro João Loureiro Sandra 《Voluntas: International Journal of Voluntary and Nonprofit Organizations》2020,31(6):1330-1342
VOLUNTAS: International Journal of Voluntary and Nonprofit Organizations - The purpose of the paper is to (i) analyze how different users of social media (Twitter) interact and spread cause-related... 相似文献
382.
Castro Adela V. Porrini Darío P. Lupo Sebastián Cicchino Armando C. 《Urban Ecosystems》2020,23(2):331-343
Urban Ecosystems - Urbanization modifies the original habitat and the biodiversity. Research throughout urban-rural gradients allows the monitoring of human activities on the biodiversity of native... 相似文献
383.
384.
Rodrigo Nobre Fernandez Helton Saulo André Carraro Fabricio Tourrucôo Ronald Hillbrecht 《Public Organization Review》2018,18(1):39-51
Public-Private Partnership (PPP) is a new model of public management which consists of the contractual relationship between public and private entities. In particular, PPPs enable risk share between public and private sectors making the asymmetric information problem in a contractual arrangement more evident. The aim of this paper was to study a moral hazard problem applied to PPP contracts. To achieve this objective, a PPP computational contractual model including the moral hazard with lotteries was developed to assess how contractual changes could affect the optimum behavior of arrangement members. Simulations indicate that projects with higher economic value should attract more qualified firms, which may be why the companies expend more effort. To deal with possible contractual contingencies and try to minimize the moral hazard problem, the government could draw up more flexible contracts in order to include possible necessary changes and punish unwanted or improper consortium behavior. 相似文献
385.
Susana Carrapatoso Paula Silva Paulo Colaço Joana Carvalho 《Journal of Housing for the Elderly》2018,32(1):26-38
This study examined the relationship of perceived neighborhood environment factors with recommended volume and intensity of walking in recreational senior walkers. A sample of 85 seniors used an accelerometer and completed the ALPHA questionnaire. Binomial logistic regressions were conducted to detect associations. Perceptions about traffic safety (odds ratio [OR] = 4.395; 95% confidence interval [CI] = 1.024; 18.866) and pleasant environment (OR = 8.718; 95% CI = 1.803; 42.149) were positively related with the achievement of 10,000 steps per day, in older women. The perception of nearby parks was positively associated with the compliance with peak 30-minutes cadence above 100, in older men (OR = 14.353; CI 95% = 1.321; 15.591). No more significant associations were found between perceptions of the neighborhood environment and walking at recommended intensity and volume levels. These results indicated that community initiatives that encourage traffic safety, pleasant environment, and parks may be a promising direction to promote walking at recommended volume and intensity in senior walkers. 相似文献
386.
Les déterminants des déplacements de la courbe de Beveridge (et de l'appariement sur le marché du travail) 下载免费PDF全文
Les auteurs s'interrogent sur les politiques et facteurs qui influent sur la correspondance entre offre et demande de travail. Ils repèrent d'abord les déplacements de la courbe de Beveridge dans douze pays de l'OCDE (2000–2013) – avec trois méthodes complémentaires – avant de les expliquer avec un modèle à variable dépendante limitée. L'analyse montre que la croissance de la population active et la législation protectrice de l'emploi facilitent l'appariement, à l'inverse des qualifications moyennes et du chômage de longue durée. De même, l'effet favorable des politiques actives (partage d'emploi, aide à l'entrepreneuriat) contraste avec un effet nettement défavorable des politiques passives (allocations chômage, imposition du travail). 相似文献
387.
Gorgulho B Marchioni DM Conceição AB Steluti J Mussi MH Nagai-Manelli R Teixeira LR Luz AA Fischer FM 《Work (Reading, Mass.)》2012,41(Z1):5806-5809
Considering the scarcity of studies with young workers and the role of diet in the prevention of chronic diseases, the objective of the study was to assess the quality of diet of working college students. The present study investigated 43 university students, aged between 18 and 25 years old who had systematically being involved in a working activity in the past 6 months, paid or unpaid, at least 6 hours daily, five days a week. Dietary intake measured by seven dietary records covering every day of the week was used to calculate the Brazilian Healthy Eating Index Revised (B-HEIR). It was observed a low B-HEIR score (53.43,±7.81) indicating a risk of a poor quality of diet, with high intake of sodium and sugar and low consumption of fruits and whole grains. This poor quality of diet can result in an inadequate nutritional status that may increase the risk of obesity and chronic diseases. 相似文献
388.
This article presents a study on the activities of the air traffic controllers of the Approach Control Area (APP) of Porto Alegre, Brazil, in different real scenarios. Based on interviews, questionnaires and the analysis of film of real scenes, the following were identified and analyzed: i) the perceptions of risk and complexity of the different air traffic scenes observed; ii) the cognitive factors (knowledge, strategy and attention dynamics) involved in the task and iii) the perception of the controller's workload. The results showed that the task complexity depends on the weather conditions, the number and type of aircraft in observation and that the controllers perceive the scenes in a similar way irrespective of their time in the profession and the type of control (radar or coordination). Attention is the cognitive factor with the greatest impact on the work and mental demand has the greatest impact on workload followed by time demand. The literature on the controllers work in Brazil is scarce and, therefore, this study aimed to contribute to the understanding of the work in one APP in order to promote future changes in the very problematic Brazilian air traffic system. 相似文献
389.
The Ergonomic tridimensional analysis (ETdA) was developed to be used as an auxiliary tool on the ergonomic intervention. It was specially designed for commercial areas with free circulation of people. Due to that, the client, the third ETdA dimension, becomes an important element and their opinions relevant in the ergonomic analysis. The remains two ETdA dimensions, professionals and analyst, play an identical role as in the traditional occupational ergonomic analysis. For each of these dimensions, specific observation tools were assembled: an ETdA questionnaire, an evaluation form and a checklist for direct and indirect observations. The variables that allow the ETdA operability are identified as Ergonomic Factors (EFs). A case study is presented identifying, for each dimension, the critical EFs. This will allow the design of the weighting table, where the influence of each dimensions results is measured, stressing the important role of clients on ergonomic issues. 相似文献
390.
Graphic representation of clickable areas in computer interfaces should allow mental representations that facilitate systems navigation during the cognitive process. If it doesn't happen users can feel lost. When thinking about websites designed to children with both entertainment and educational intention these systems must stimulates this kind of users. As many other activities for children nowadays, many system are commonly used as support for contents explored in school, as a complement. The design of theses educational systems must have the compromise to allow these users navigate and feel capable to explore every part of these interfaces. This paper is focusing the results of Ticese and Pedactice methods and shows the importance of these results as an exploratory phase in a bigger research that evaluates interfaces with children. Quantitative and qualitative data were collected related to structuring the user's mental model, influenced by the graphic representation of hypertext areas in a children's educational site. 相似文献