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   243篇
  免费   15篇
财政金融   19篇
工业经济   15篇
计划管理   48篇
经济学   48篇
综合类   5篇
运输经济   8篇
旅游经济   7篇
贸易经济   88篇
农业经济   2篇
经济概况   14篇
邮电经济   4篇
  2023年   2篇
  2022年   2篇
  2021年   5篇
  2020年   11篇
  2019年   8篇
  2018年   6篇
  2017年   15篇
  2016年   9篇
  2015年   5篇
  2014年   15篇
  2013年   48篇
  2012年   9篇
  2011年   14篇
  2010年   7篇
  2009年   14篇
  2008年   10篇
  2007年   10篇
  2006年   6篇
  2005年   9篇
  2004年   4篇
  2003年   2篇
  2002年   10篇
  2001年   6篇
  2000年   5篇
  1999年   1篇
  1998年   2篇
  1997年   2篇
  1996年   1篇
  1993年   1篇
  1988年   1篇
  1987年   2篇
  1986年   1篇
  1985年   1篇
  1984年   2篇
  1983年   1篇
  1982年   1篇
  1981年   2篇
  1979年   1篇
  1978年   1篇
  1974年   2篇
  1973年   1篇
  1972年   1篇
  1971年   1篇
  1969年   1篇
排序方式: 共有258条查询结果,搜索用时 796 毫秒
51.
The specific focus of this article is how critical aspects of the object of learning to weld are made relevant in interaction between a vocational teacher and a student in the learning processes of welding as part of a Swedish upper-secondary technical vocational education programme. By intertwining variation theory with a conversation analytical approach, our analysis shows that the teaching focus alternates between the process as a whole and details about the welding process, and how the relation between the critical aspects are negotiated in the teaching situations. Furthermore, the teacher and the student together build up a common resource of experiences to which they can relate the parts and the whole, and the teaching becomes increasingly subject specific as the teacher and student build up more common experiences. The approach used in this article sheds light on the complexity of learning to weld, and also facilitates an understanding of welding as an object of learning as such.  相似文献   
52.
针对城市绿化面临的问题及其在生态中国建设中应有的担当地位,以青岛市为例,论证了运用用途管制制度规划建设管理城市绿化的必要性、可行性以及通过立法供给落实城市绿化用途管制制度的路径,认为绿化分类是实施用途管制的基础,绿地系统规划是实施用途管制的依据,转用审批是实施用途管制的关键,绿地利用效益评估是实施用途管制的保证,执法监督是实施用途管制的保障。同时建立多重激励保障机制,形成良好的实施用途管制制度的社会氛围。  相似文献   
53.
Building on the theoretical framework provided by sociological research on eating practices, family meals, self‐cooked meals and time use, this study examines national differences and similarities in the use of convenience food in Northern Europe. The study draws on two quantitative sets of data, the primary data set (N = 8248) collected in 2012 in Denmark, Finland, Norway and Sweden, and the complementary data set (N = 800) collected in St. Petersburg area in 2013. In general, consumers’ attitudes towards convenience food were negative. Time saving was an important motivator for convenience consumption in all countries. The effects of other attitudes were diffuse and factors such as low cost, health effects, and taste of convenience food, affected convenience consumption differently in different countries. In the four Nordic countries women used less convenience food than men. In Finland and in Norway older respondents used convenience food less often than the young. Generally, the use of convenience food was most frequent among those living alone. The effects of education and occupation were small, implying that the phase of life is more important than social stratification in explaining convenience food consumption. In the St. Petersburg data, there were no differences related to social background.  相似文献   
54.
For several decades, television consumption has been crucial in the complex web of factors underlying the obesity epidemic. It has been suggested that if television cooking shows would endorse healthy eating styles, they may have positive effects on consumers’ eating habits. This study empirically investigated the consequences of exposing children (N = 85, aged 9–12 years) to an existing television cooking show episode endorsing the consumption of fruits and vegetables compared with exposure to a non‐food‐related science show. The measures included pre‐test and post‐test attitudes toward health/nutrition and fruits/vegetables, as well as state preferences for a list of healthy and unhealthy foods. At the end of the study, children were separately given the choice between a popular cookie and a piece of fruit as a reward; this was used as a behavioural measure. The results of a logistic regression on the behavioural choice measure showed that the mere exposure to one episode of the television cooking show significantly increased the odds that the children would choose a piece of fruit over a cookie. Repeated‐measures analyses showed that watching this single episode also decreased children's state appetite for unhealthy foods. State appetites for healthy foods and attitudes toward health/nutrition or fruits/vegetables did not change after watching the television cooking show episode. In sum, existing television cooking shows that endorse healthy eating positively influence children's food consumption in the short term and may have the potential to be used as platforms for nutrition education.  相似文献   
55.
The transformation of food consumption in wealthy economies is regarded as an essential measure to reach global sustainability goals. However, existing policies and research activities to change food consumption in the increasingly relevant out‐of‐home sector relate to a wide set of options on how to influence behaviours and may be criticized to lack a general focus. Against this background, our study provides a structured review of the existing research body on the determinants of individuals’ food choices and food consumption out‐of‐home. It structures the various research approaches and findings for 110 selected papers according to a general ecological framework where personal, social and environmental determinants for food behaviours are considered. By providing a collective overview and linking results for different behavioural aspects and settings, this study supports a more general understanding of consumer food behaviour in out‐of‐home settings. Consequently, it also provides a means to identify research gaps and to suggest relevant aspects for future research to draw from the combination of findings and to enhance sustainability in food consumption.  相似文献   
56.
Abstract

Heritage tourism has evolved to include study of sub‐segments who travel to attend and participate in historical event re‐enactments. In the US, the bicentennial of the Lewis and Clark expedition to the Pacific coast and back again is being commemorated from its point of departure to its end. This paper is an exploratory study of a sample of re‐enactment tourists who attended three of the Lewis and Clark events. The role that re‐enactment tourism plays in heritage tourism is examined and preliminary findings on perceptions of nostalgia and authenticity of the re‐enactment products and events are presented. Preliminary managerial benefits and suggestions for host communities are provided.  相似文献   
57.
Universal Service provision has a special role for the public utilities sector in many Organization for Economic Co-operation and Development (OECD) countries. These public utilities have largely been subject to privatization during the last 3 decades. Efficiency effects of privatization are widely documented while the impacts on the quality and accessibility of the Universal Service are not much examined. By using a unique dataset on privatization for 21 countries over the period 1980–2007 for the postal sector, we are able to show that privatization, in particular formal privatization, has led to a decrease in the quality of the Universal Service.  相似文献   
58.
Abstract

Customer loyalty is fundamental to the profitability and survival of e-tailers. Yet research on antecedents of e-loyalty is relatively limited. This study contributes to the literature by investigating the effect of motives for online shopping on e-satisfaction and e-loyalty. A structural equations model is developed and tested through data from an online survey involving 797 customers of two UK-based e-tailers focussing on hedonic products. The results suggest that convenience, variety seeking, and social interaction help predict e-satisfaction, and that social interaction is the only shopping motive examined with a direct relationship to e-loyalty. Data also show that e-satisfaction is a strong determinant of e-loyalty. These findings are discussed in the light of previous research and avenues of future research are proposed.  相似文献   
59.
This paper presents empirical evidence on immigration flows into the OECD countries during the period 1990-2000. Our results indicate that network effects are strong, but vary between different groups of welfare states and between countries according to the type of immigration policy being applied. Network effects seem to be less important in the Nordic countries which also seem to attract immigrants from the lowest income level source countries. We do not find clear evidence that selection effects measured by migration flows being sensitive to differences in public social expenditures have had a major influence on the observed migration patterns until now. This may partly be explained by restrictive migration policies which may have dampened the potential selection effects.  相似文献   
60.
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