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   275篇
  免费   12篇
财政金融   36篇
工业经济   34篇
计划管理   31篇
经济学   50篇
综合类   3篇
运输经济   11篇
旅游经济   41篇
贸易经济   46篇
农业经济   23篇
经济概况   12篇
  2023年   5篇
  2021年   3篇
  2020年   7篇
  2019年   11篇
  2018年   14篇
  2017年   10篇
  2016年   5篇
  2015年   8篇
  2014年   10篇
  2013年   54篇
  2012年   14篇
  2011年   8篇
  2010年   9篇
  2009年   9篇
  2008年   9篇
  2007年   8篇
  2006年   8篇
  2005年   10篇
  2004年   12篇
  2003年   8篇
  2002年   6篇
  2001年   7篇
  2000年   9篇
  1999年   2篇
  1998年   2篇
  1997年   1篇
  1996年   3篇
  1995年   2篇
  1994年   1篇
  1993年   1篇
  1992年   4篇
  1990年   1篇
  1987年   1篇
  1985年   7篇
  1983年   5篇
  1981年   3篇
  1980年   2篇
  1978年   2篇
  1977年   1篇
  1976年   2篇
  1974年   1篇
  1973年   1篇
  1971年   1篇
排序方式: 共有287条查询结果,搜索用时 31 毫秒
61.
This paper examines self-enforcing contracts as a financial mechanism for reducing carbon emissions from deforestation and forest degradation when the opportunity cost of the land (i.e., landholder type) is private information and is imperfectly correlated over time (i.e., partially persistent types). Because self-enforcement limits the feasible incentives, the conservation levels are constrained by the surplus created. Regardless of the degree of persistence of such opportunity costs across contracting periods, a first-best self-enforcing contract can deliver “additional” carbon sequestration beyond the business as usual scenario only if the value of forest conservation is sufficiently high. Otherwise, self-enforcing contracts can induce some, suboptimal level of carbon sequestration. The degree of persistence of opportunity costs across periods does not affect the amount of total payments provided in the optimal menu of contracts, but greater persistence of opportunity cost types leads to contracts that feature more of the total payment as a bonus in contracts for landholders with a high opportunity cost for their land and more of the total payment as an upfront fixed payment for landholders with a low opportunity cost.  相似文献   
62.
We present a method for estimating the benefits of years of education for reducing dementia symptoms based on the cost savings that would accrue from continuing independent living rather than relying on formal or informal carers. Our method for estimating the benefits of education involves three steps: first taking a year of education and seeing how much this lowers dementia, second using this dementia reduction and estimating how much independent living is affected and third applying the change in caregiving costs associated with the independent living change. We apply our method for estimating education benefits to a National Alzheimer’s Coordinating Center sample of 17,239 participants at 32 US Alzheimer’s disease centres over the period September 2005 and May 2015.  相似文献   
63.
Abstract . To what extent can young adult children rely on their parents for financial support? This question will take on added importance if the commitments of the Social Security system put greater strain on the children of retirees. Despite the critical role that parents have in supporting their children, why they help some and not others remains unclear. Findings using two waves of data from the Health and Retirement Study that control for the needs of children and the resources of parents suggest that parents give more inter vivos financial assistance to their disadvantaged children rather than focusing on children most able to give financial help in return. Other measures of child well‐being besides income, including home ownership, education, parental status, and marital status, also suggest that parents help needier children more. Children who live nearby also receive more, a finding consistent with exchange motives or simply the ability of these children to more stridently demand support. Neither altruism nor exchange theories explain why stepchildren receive substantially less support than naturally born or adopted children. The diversity of effects suggests that giving is based on heterogeneous motives—parents may temper their altruism for children by the degree to which they feel responsible and by the stridency of some children in seeking support. Findings are robust upon allowing for unobserved differences across families by estimating fixed effect models.  相似文献   
64.
In light of widespread concerns about the reliability of self‐reported disability, we investigate what can be learned about the prevalence of work disability under various assumptions on the reporting error process. Developing a nonparametric bounding framework, we provide tight inferences under our strongest assumptions but then find that identification deteriorates rapidly as the assumptions are relaxed. For example, we find that inferences are highly sensitive to how one models potential inconsistencies between subjective self‐assessments of work limitation and more objective measures of functional limitation. These two indicators appear to measure markedly different aspects of health status. Copyright © 2008 John Wiley & Sons, Ltd.  相似文献   
65.
The world sugar market has long been characterized by volatileprices and widespread intervention. Controls on domestic prices,demand, and supply have created an inefficient pattern of worldproduction, consumption, and trade. Without government controls,production would shift from the countries with higher cost,subsidized production (especially the European Community, Japan,and the United States) to the countries with lower costs (suchas Australia, Brazil, and Thailand). The resources saved couldthen be directed to other activities. Sugar policies in countries with high costs reduce world sugarprices quite substantially in the long run and increase pricevariability significantly; production controls in countrieswith low costs increase world prices somewhat and also increasetheir variability. What would happen if all interventions ceased? Average worldsugar prices would probably— but not definitely—rise. World prices would definitely vary less, and economicconditions would definitely improve, especially in developingcountries that depend heavily on sugar exports. But the prospectsfor substantial reform of the sugar market are not promising,even though the GATT Uruguay Round continues. This article putsforward some modest proposals for changing the existing interventionsto lessen economic distortions and reduce costs.   相似文献   
66.
67.
68.
In a cross‐cultural tourist behavioral study, skiers from three different countries were surveyed in order to understand their environmental awareness and knowledge. The contingent valuation method (CVM) was also used to discover their willingness‐to‐pay (WTP) for environmentally‐friendly skiing products. The results point to a general lack of knowledge and even confusion amongst skiers about environmental issues pertaining to skiing. However, skiers say they will be more likely to visit a resort that is environmentally‐responsible. Use of the CVM indicated a strong correlation between WTP and the cost of the holiday, level of income and level of environmental conscience. The majority of skiers would pay more for a “greener” ski resort, but significant differences in responses were found between the three cultures. Theoretical and practical implications are discussed.  相似文献   
69.
This investigation considers the participation of children, adolescents and young adults in nature-based recreation. We draw upon the recreation narratives of forty-seven adult recreationists in the activities of tramping, angling, hunting and mountaineering, obtained from in-depth interviews. In particular, the study considers the transitions from childhood through adolescence to young adulthood, and examines how our participants maintained their participation, or alternatively, disengaged from their activity over this period. The paper provides empirical support for the role of family, and early exposure to nature based recreation in fostering enduring participation. Failing this, the role of school, club and outdoor organizational support and mentoring, right through to tertiary study was highlighted. We also identify a critical role for unstructured outdoor play for young children in nature. The paper discusses challenges for this, and for mentoring, in both formal and informal senses, as pathways into nature-based recreation in an increasingly risk averse society.  相似文献   
70.
Accurate demand forecasts are critical to maintaining customer service levels and minimizing total costs, yet increasingly difficult to achieve. Using weekly point‐of‐sale (POS) and order data for 10 ready‐to‐eat cereal stock‐keeping units from 18 regional U.S. grocery distribution centers, this research empirically investigates two demand forecasting issues: (1) the accuracy of top‐down versus bottom‐up demand forecasts; and (2) whether shared POS data improve demand forecast accuracy. The results reveal a previously unexplored relationship between demand forecast methodology and the use of shared POS data. We find that the superiority of the top‐down or bottom‐up forecasting as the more accurate demand forecast method depends on whether shared POS data are used.  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