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   179篇
  免费   5篇
财政金融   1篇
工业经济   38篇
计划管理   5篇
经济学   25篇
综合类   3篇
旅游经济   6篇
贸易经济   55篇
农业经济   43篇
经济概况   8篇
  2022年   2篇
  2021年   7篇
  2020年   6篇
  2019年   6篇
  2018年   4篇
  2017年   16篇
  2016年   12篇
  2015年   3篇
  2014年   12篇
  2013年   19篇
  2012年   9篇
  2011年   15篇
  2010年   12篇
  2009年   26篇
  2008年   11篇
  2007年   5篇
  2006年   4篇
  2005年   1篇
  2003年   6篇
  2001年   3篇
  2000年   2篇
  1999年   1篇
  1995年   1篇
  1994年   1篇
排序方式: 共有184条查询结果,搜索用时 15 毫秒
61.
Institutions of higher education and work–study abroad programmes have been instrumental in internationalizing sustainable agriculture education. Informal educational opportunities in the form of internships and apprenticeships have become relatively common features of the organic agriculture landscape in the USA. This research examines an international agricultural exchange programme that effectively combines these two emerging fields of study exploring how exchange participants perceive the transferability of their organic farming experience in the USA, to their home countries in Peru and Ecuador. Learning experiences and host farms vary considerably, with some participants being more optimistic than others about how well organic farming practices on their respective farms could be adopted to their home country contexts. While the cross-border/transnational nature of the exchange programme examined is not unique, the inverse flow of people in the exchange (from South to North) examined in this study allows for a new perspective on the value of agricultural exchanges and the perceived transferability of organic farming ideas and practices. Ultimately, this study suggests that the most valuable elements of international agricultural exchange reside not with the diffusion of agricultural innovations, but with how cross-cultural experiential learning promotes critical reflection on place-appropriate production.  相似文献   
62.
Vague food labels and distorted product claims have persisted in the “natural” food industry, while organic claims can be certified by the U.S. Department of Agriculture (USDA). Using experimental methods and a sample of randomly selected subjects, we test food label and information treatment effects on subjects' willingness-to-pay (WTP) for organic, “natural,” and conventional foods. Random nth-price auctions are used to elicit WTP after subjects received one of five randomly assigned information treatments. We find large information effects, including asymmetric cross-market effects for natural and organic foods. Perhaps surprising is that organic premiums increase in response to subjects seeing the “natural” foods industry's perspective on its products. Demographics effects are also important. The results have practical implications for natural and organic food marketing and valuing products where there are vague claims about their attributes.  相似文献   
63.
Applying the economics of crime theory, we model the decision of an opportunistic and/or careless organic farmer and derive hypotheses to explain noncompliance. Where empirical data are available, hypotheses are tested. We use data for the years 2007 through 2009 of organic farms certified by Bio Suisse. Imposed sanctions are used as a proxy variable for noncompliance and farm characteristics as explanatory variables. Random effects logit models show that processing activities and livestock diversity significantly increase a farm's sanction probability. Past noncompliances also indicate a higher present sanction probability. Finally, we discuss some methodological issues and suggest a way to organize risk‐based inspections more effectively.  相似文献   
64.
This paper studies how households choose organic products on a given store visit. We develop a three-stage purchase incidence/brand choice/purchase quantity model for organic products. Shared random effects parameters link the three stages of the model. We empirically quantify the effects of category variables, marketing mix, and demographic variables on the purchase of organic products using a unique household panel dataset that includes actual organic purchase data from two markets, by over 4,500 households in 25 stores for the period between January 2004 and June 2009. First, we find that the purchase of organic products is greater among the high income, college educated, and older families as well as among consumers holding high-level occupations. Second, households tend not to purchase organic products when buying in concentrated categories. Third, on average, households tend to buy organic store brands more than the organic national brands. Promotions of organic brands (feature ad and display) are less likely to drive households to buy organic brands and so does the organic brand's distribution breadth. Finally, price has an inverted U-shaped effect. We discuss the implications of these results for retailers, manufacturers and researchers.  相似文献   
65.
This paper assesses the competitiveness of organic and conventional dairy farms under different milk market and organic farming policy scenarios. We use a DEA-based model to estimate for each policy scenario the sample farms’ profit potential in both technologies. The model enables identification of a farm’s optimal technology based on its input–output observations. The empirical analysis is based on the annual accounts of 1300 Bavarian dairy farms. Results indicate that approximately 69% (78%) of the organic (conventional) farms have chosen their optimal farming system. The remaining organic (conventional) farmers could increase their profit on average by roughly 6% (10%) by switching to the other technology. Abolishment of the EU milk quota results in a considerable decline in the number of sample farms for which organic farming is the optimal technology, suggesting that, ceteris paribus, organic dairy farms may lose competitive advantage with the deregulation of the EU’s milk market regime in 2015. Organic maintenance payments more than double the number of farms with a higher earning potential in organic farming, but their effectiveness could decline when the milk quota is abolished.  相似文献   
66.
Agri-food products are more and more considered and treated as valuable local assets. The valorisation of such local assets is an issue of great importance, especially in disadvantaged areas. In this paper, the case of the olive oil of Lesvos Island in Greece is presented. We seek to analyse the supply chain and examine the benefits that are distributed to its various actors by comparing three different olive oil products: PGI, organic and conventional olive oil with the use of two dimensions: size of production and success of the producers. The data come from quantitative and qualitative research to different actors across the supply chain and from published and unpublished local and national sources. The findings indicate that olive farmers are “cut-off” from the benefits of the products to a great extent. Small bottlers are the ones that receive the most benefits, as they can ignore big retailers. Overall, the absence of consensus and common management between the different actors, along with a complex and very competitive international market create uneven impacts.  相似文献   
67.
Improving the sustainability of farms often incurs additional costs for farmers. These costs come from allocating land to the maintenance of the ecological processes (energy and material flows, natural population regulation) required for the agroecosystem to function. Since these costs are not recovered on the markets, farmers see a fall in profits, the financial viability of their farms is compromised, and they suffer the consequences of the environmental services they are providing. All this makes it essential to implement government policies designed to compensate farmers for their efforts. The issue of how to assess sustainability has generated widespread debate within ecological economics, specifically as to whether it is possible to place a monetary value on it and if so, how this should be done. In a previous article we showed that agrarian sustainability involves a land cost, therefore this cost can be translated into monetary values. The purpose of this study is to develop this concept in practical terms by applying it to organic farming. We calculated the land cost of agrarian sustainability (LACAS) in order to compare organic versus conventional management in olive farming, as this crop is grown extensively in Spain and other Mediterranean countries. The results show that the agro-environmental subsidy is not enough to encourage olive growers to make the conversion from conventional to organic methods, because the land cost of sustainability is not adequately offset. They also show that improving agroecosystems can allow the land to take on more functions without increasing the land cost. In our case, encouraging the multifunctionality of the land has permitted a reduction in this cost. The LACAS could be a useful tool, not only for drawing up government policies designed to support organic farming, but also for improving the sustainability of the agrarian sector.  相似文献   
68.
This Note questions the statistical validity of the analysesof the relationship between the rate of profit and the organiccomposition across industries.  相似文献   
69.
本文利用城镇人口和行业生产及环境特点,对我国城镇的有机废弃物生成量、利用量和排放量进行了估算,并对它们的潜在性资源价值和环境影响作出定量评价。这一结果对制定我国城镇有机废弃物的环境管理政策和开发利用这一资源有着基础重要性。  相似文献   
70.
This paper analyses the uptake of a voluntary green public procurement policy in Sweden. The policy, decided in 2006, stated a national goal for the public sector to increase its share of organic food purchases to 25% by 2010. The overall purpose was to increase organic farming. Municipalities, which are highly independent authorities with self-determination, were encouraged to formulate own political goals. Based on survey data on organic food purchases for the period 2003–2016, supplemented with data on municipality characteristics, we analyse the determinants of the local uptake of the national policy, accounting for potential selection bias. The main finding is that local political goals are set and that these have in turn, a significant and positive effect on the share of organic food purchases. This suggests that there is an uptake of the voluntary policy. Also, we find that the increase in expenditures per capita devoted to organic food is quite substantial following the adoption of a local policy.  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