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   271篇
  免费   15篇
财政金融   45篇
工业经济   24篇
计划管理   67篇
经济学   29篇
综合类   2篇
运输经济   2篇
旅游经济   9篇
贸易经济   29篇
农业经济   68篇
经济概况   11篇
  2023年   1篇
  2022年   1篇
  2021年   2篇
  2020年   6篇
  2019年   7篇
  2018年   10篇
  2017年   8篇
  2016年   8篇
  2015年   10篇
  2014年   7篇
  2013年   29篇
  2012年   5篇
  2011年   13篇
  2010年   11篇
  2009年   15篇
  2008年   9篇
  2007年   11篇
  2006年   11篇
  2005年   17篇
  2004年   16篇
  2003年   8篇
  2002年   11篇
  2001年   8篇
  2000年   5篇
  1999年   4篇
  1998年   3篇
  1997年   4篇
  1996年   7篇
  1995年   3篇
  1994年   8篇
  1993年   4篇
  1992年   6篇
  1991年   3篇
  1990年   4篇
  1989年   2篇
  1987年   1篇
  1986年   2篇
  1985年   1篇
  1984年   1篇
  1983年   1篇
  1978年   1篇
  1970年   1篇
  1962年   1篇
排序方式: 共有286条查询结果,搜索用时 15 毫秒
1.
Using economic analysis to prioritise improvements in environmental conditions is particularly difficult when multiple benefits are involved. This includes ‘bundling’ issues in agricultural pollution management, where a change in management action or farming systems generates multiple improvements, such as reductions in more than one pollutant. In this study, we conceptualise and compare two different approaches to analysing cost‐effectiveness when varying bundles of benefits are generated for a single project investment. Each approach requires data to be transformed in some way to allow the analysis to proceed. The index approach requires the transformation on the benefits side so that the effects of multiple pollutant changes can be combined into a measure for each project which can then be compared to costs. By comparison, the disaggregation approach requires the transformation on the costs side where costs for each project have to be apportioned across the different pollutants involved. The paper provides novel insights with an application to agricultural water quality improvements into the Great Barrier Reef in Australia, demonstrating that while both approaches are effective in prioritising projects by cost‐effectiveness, the disaggregation approach provides more insightful results and values that may be relevant for use as upper value guidelines in future project selection.  相似文献   
2.
Agricultural applications of nanotechnology are at a relatively early stage and little is known about consumer responses to the technology. Canadian consumer responses to food nanotechnology are examined through the lens of the Food Value Scale. Data from a survey of Canadian consumers are used to evaluate the relative importance of eleven food values to food purchase decisions. We find that taste, safety, nutrition, and price are among the most important food values to Canadians, however, consumers exhibit considerable heterogeneity with respect to the priority placed on these values. A discrete choice experiment (DCE) explores the effect of food values on choice behavior. The DCE is positioned as a sliced apple product with non-browning and antioxidant-enhanced features introduced through the use of nanocoating or a conventional coating method. Random parameters logit (RPL) and latent class models (LCM) confirm the existence of significant preference heterogeneity. The LCM identifies three classes of consumers: “supporters,” “doubters,” and “opponents” who differ in their reaction to nanotechnology and in the relative importance placed on food values such as naturalness, novelty, and convenience. The analysis shows that food values provide additional insights into consumers’ food choices and their attitudes toward novel food technologies.  相似文献   
3.
Anonymity is thought to be an important means for ensuring a free exchange of ideas by encouraging the expression of minority viewpoints. However, we suggest that anonymity’s reduction in awareness of others potentially affects the expression and interpretation of comments that are made during a discussion. In particular, anonymity will increase the likelihood that comments will be made that are contrary to the majority opinion while at the same time decreasing the effect that those contrary arguments have on other group member’s opinions. This paper reports experimental results showing that anonymity led to more overall participation in discussions of ethical scenarios. However, equality of member participation did not differ between anonymous and member-identified groups, and anonymous groups had significantly higher awareness-related comments. This leads to the conclusion that additional participation in anonymous groups accommodates reduced awareness rather than reflecting the increased participation of normally reticent group members. In addition, anonymity led to more arguments in support of questionable behavior, suggesting that the freeing effects of anonymity apply to the social desirability of arguments. Finally, there was less change in opinion under conditions of anonymity than when comments were identified, suggesting that anonymous arguments have less influence on opinions than identified comments.  相似文献   
4.
Cultivating creativity and innovation in the academy requires adaptive leadership to develop organizational capacity for collaboration and teamwork. To foster collective capacity for innovation, leaders can be guided by Kouzes and Posner's five practices of exemplary leadership.  相似文献   
5.
The main objective of this study is to examine how repeated choice affects preference learning in stated preference experiments. We test different hypotheses related to preference learning by analyzing response patterns and asking respondents in a choice experiment to report their experienced certainty when going through the choice tasks. In a split-sample test, we show that follow-up choice certainty questions are procedural invariant. The self-reported certainty results indicate that learning occurs, but econometric testing procedures do not identify any significant impact of learning effects on parameter estimates or variance across choice tasks. Additional tests of choice consistency suggest that preferences in the choice experiment are stable and coherent.  相似文献   
6.
The European employment strategy initiated in 1997 is critically dependent upon the further integration of women into the labor market. The European Union has set a specific target employment rate for women of 60 percent by 2010 and is also committed to providing more and better child care facilities. This gender focus is reinforced by the requirement for gender mainstreaming in all aspects of European employment policy. There is an implied Europe-wide, universal policy of encouraging female labor-market participation and reducing the care work performed by domestic labor. However, the European Commission continues to have limited competence in areas of family, social, and welfare policy. As a result, these common employment objectives for women are thus being pursued against a background of quite different systems of social, family, welfare, and indeed labor-market organization. These systems have different economic and employment implications, such that the outcomes of the common European employment strategy will also be highly variable.  相似文献   
7.
This paper focuses on understanding the role of interest groups and markets in influencing regulatory change. To that end, it first identifies the interest groups surrounding the creation of legislation that separated commercial and investment banking in the 1930s and then identifies the interest groups involved in the more recent attempts to repeal the separation. Careful attention is also given to developments in the private market that affect the legislative process. This then becomes the case study for understanding how interest groups and market developments are able to influence regulatory policy. This particular case study finds that existing orthodox economic and political science literature gives too much credit to interest groups and not enough credit to private market developments when analyzing policy development and reform.  相似文献   
8.
The potential of a theory based on organizational memes in coevolution with the environment has been postulated, but remains empirically under-developed. This study explores whether understanding organizational memetic variation is empirically possible and, if so, whether it might, with further development, provide managers with early indications of a misalignment between organizational action (operationalized as memetic variation) and strategic intent—the amount of memetic variation needed to stay aligned with the competitive environment. A method for empirically identifying knowledge-based memes in everyday practice is developed. It stems from modern advances in genetics allowing micro-level changes in genes to be linked to macro-environmental dynamics. Using the concept that memetic variation is caused by everyday, uncontrollable uncertainties of interpretation, memetic variation is reduced to seven categorical types. A highly exploratory quasi-experimental design allows a preliminary comparison of a would-be innovative ‘Portfolio Management Committee’ with self-organizing Internet chat-room settings that are representational of open-source innovation. Results are consistent with predictions showing that higher levels of variation are seen in the latter, despite the former’s strategic intent of innovating to stay aligned with a dynamic environment. Further work is needed, however, to test reliability and validity.   相似文献   
9.
Strategic responses to food safety legislation   总被引:1,自引:0,他引:1  
This paper assesses the responses made by food companies to changes in food safety legislation. Such responses are assessed in three ways. Firstly, an assessment is made as to why strategic responses to such legislation might be different to general strategic behaviour. Secondly a conceptual framework is presented and an examination of supply chain organisational response is made. Finally, the paper addresses the question of external marketing responses to food safety legislation. The paper concludes that food safety legislation is different, and often requires very swift strategic actions to be effective. Like other forms of legislation, however, food safety issues can also provide incentives and opportunities to well-managed and market-orientated firms.  相似文献   
10.
Patterns in property values provide strong signals about the future and sustainability of land use. This paper analyzes the determinants of land value in an Amazonian frontier settlement. We estimate hedonic price functions to identify factors that affect the value of farm properties in the western Brazilian Amazon. Distance to market explains nearly one-third of the variation in farm value, as predicted by the von Thünen model. After controlling for location relative to the central market and for municipality, we find that investment in the farms (as reflected in the stocking rate of pastures and the establishment of home gardens) has the next largest impact on land value. The value per hectare of land is negatively related to total lot size, suggesting that any economies of scale are outweighed by the cost of accessing remote corners of large properties. We do not find that land values are related to available measures of biophysical factors or to historic or current land use. Our results do not identify any premium for forest cover or for land uses considered to be more sustainable than pasture on the property itself. However, farm values are affected by neighboring land cover, specifically, the extent of barren land. Thus, local knowledge of factors contributing to future productivity, as summarized in land values, confirms that soil exhaustion can lead to a general decline in property values, while investments in a property both as a homestead and as a farm can help sustain frontier settlements.  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