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   3546篇
  免费   169篇
  国内免费   36篇
财政金融   293篇
工业经济   222篇
计划管理   937篇
经济学   510篇
综合类   277篇
运输经济   42篇
旅游经济   116篇
贸易经济   866篇
农业经济   179篇
经济概况   309篇
  2024年   4篇
  2023年   54篇
  2022年   59篇
  2021年   108篇
  2020年   137篇
  2019年   129篇
  2018年   109篇
  2017年   104篇
  2016年   111篇
  2015年   100篇
  2014年   207篇
  2013年   376篇
  2012年   216篇
  2011年   271篇
  2010年   180篇
  2009年   197篇
  2008年   233篇
  2007年   218篇
  2006年   210篇
  2005年   191篇
  2004年   106篇
  2003年   87篇
  2002年   57篇
  2001年   57篇
  2000年   50篇
  1999年   36篇
  1998年   32篇
  1997年   19篇
  1996年   19篇
  1995年   13篇
  1994年   18篇
  1993年   12篇
  1992年   8篇
  1991年   3篇
  1990年   1篇
  1989年   5篇
  1987年   1篇
  1985年   3篇
  1984年   3篇
  1983年   2篇
  1982年   5篇
排序方式: 共有3751条查询结果,搜索用时 15 毫秒
81.
The paper concerns a neglected aspect of the Wealth of Nations (with the notable exception of D. Levy 1999 Levy, D. M. 1999. “Adam Smith’s Katallactic Model of Gambling: Approbation from the Spectator.” Journal of the History of Economic Thought 21 (1): 8191. doi:10.1017/S1053837200002868.[Crossref] [Google Scholar]), dealing directly with decision under risk. In a few pages from book I, chapter 10, Adam Smith explicitly named “lotteries” various objects of choice (possible occupations, or investment opportunities, for instance) and provided an analysis which standard expected utility glasses would hardly fit. Taking this into account allows a better understanding of the part played by typical characters like the “projector” or the “sober man”, in such matters as Smith’s conception of entrepreneurship or of the credit market. The use of some modern concepts in decision analysis (inverse stochastic dominance, rank dependent utility, prudence toward risk), is a means to show the existence, in Smith’s work, of an original theory from decision under risk, where his analysis of lotteries in the Wealth of Nations is consistent with statements from his moral philosophy on asymmetric sensitivity to gains and losses and to the regulating part played by the impartial spectator.  相似文献   
82.
The public sector plays an important role in the German “Energiewende”. Besides energy management in municipal properties the local government can also support the switch to renewable energy sources through a change in energy supply structures within in their region. Methods of Multi-Criteria Decision Making (MCDM) from Operations Research are helpful regarding that challenge, as they are able to assess the sustainability of local energy concepts, since they not only offer stakeholders the opportunity to participate, but also consider multiple conflicting criteria. In that way, the acceptance of local energy projects and the participation of stakeholders in the decision process are supported. The case study presented in this paper illustrates the results of a MCDM process employed to identify a sustainable bioenergy concept in a rural village in Lower Saxony, Germany. Our analysis revealed not only the opportunities and challenges associated with executing an MCDM process to support the realization of local bioenergy projects, but also discusses potential limitations of the methods.  相似文献   
83.
[目的]生物菌肥对于土壤改良、环境改善、食品安全具有重要意义,但目前生物菌肥在整个肥料产业中所占份额较小,迫切需要探讨如何从农户角度提高生物菌肥的施用比例。[方法]基于设施蔬菜农户的数据,构建Bivariate Probit模型,对农户生物菌肥的购买意愿和行为的影响因素进行比较研究。[结果]农户的生物菌肥购买意愿和行为总体上呈现一致性,愿意购买的农户中有97. 77%的农户具有实际的购买行为;但两者的影响因素有所差异,从差异因素来看,质量安全检测对购买意愿具有显著的正向影响,但对购买行为的影响并不显著;农户文化程度、种植年限、对无公害、绿色、有机蔬菜的了解程度,经销商推荐,施肥指导对购买行为具有显著的正向影响。从共同因素来看,生态环境认知变量对购买意愿和购买行为影响不显著。[结论]要推广生物菌肥,需要进一步加强质量安全检测体系对农业行为的约束性,提升经销商的规范经营意识,采用集中招标等灵活的价格政策,提升农户的生态技能,并在保护生态环境方面出台更完善的农业绿色发展政策。  相似文献   
84.
We report results from a study of superannuation member advice‐seeking within their plan, explaining observed patterns by member age, gender, issue salience and size‐of‐bet effect. Inquiry mode, frequency and volume of contact with the advice‐provider, and sensitivity of members to legislative change and macroeconomic events are considered. Results show that gender (female more likely than male), age (older rather than younger), balance (larger rather than smaller) and experience (longer rather than shorter) are the strongest advice‐seeking predictors, consistent over time. Findings suggest member engagement around retirement planning may be more effective when considering the factors affecting advice‐seeking behaviour in general.  相似文献   
85.
Drawing on the social capital literature, we examine whether the co-existence of distinct yet interacting social groups, namely family and non-family members, creates the conditions for increased family firm innovation. In particular, we theorize that family and non-family social capital have a joint positive effect on family firm innovation and this joint effect is stronger than the single effects of family and non-family social capital. In addition, we predict that while family control has a positive moderating effect, generational involvement has a negative moderating effect on the above-mentioned relationship. With supportive empirical results, our research makes important contributions to the existing literature.  相似文献   
86.
This paper studies the price‐setting problem of market makers under risk neutrality and perfect competition in continuous time. The classic approach of Glosten–Milgrom is followed. Bid and ask prices are defined as conditional expectations of a true value of the asset given the market makers' partial information that includes the customers' trading decisions. The true value is modeled as a Markov process that can be observed by the customers with some noise at Poisson times. A mathematically rigorous analysis of the price‐setting problem is carried out, solving a filtering problem with endogenous filtration that depends on the bid and ask price processes quoted by the market maker. The existence and uniqueness of the bid and ask price processes is shown under some conditions.  相似文献   
87.
88.
The phenomenon of reshoring to the U.S. has received wide attention ever since it became a political platform for U.S. politicians during the last presidential election. The economic downturn, a heightened emphasis on sustainability, and increasing customer expectations for flexibility and improved cost performance drove firms to re-consider the appropriate “shoring” decision. The intent of this research note is to add a U.S.-centric perspective to the “shoring” debate.  相似文献   
89.
Clustering plays an important role in management and decision‐making processes. This paper first discusses three types of cluster analysis methods—centroid‐based, connectivity‐based, and density‐based. Then the challenges to traditional clustering in new business environments are highlighted, with algorithmic extensions and innovative efforts for coping with data that is dynamic, large‐scale, representative, non‐convex, and consensus in nature. In addition, three application cases are illustrated, where clustering is incorporated into the overall solution in the contexts of management support, business of sharing economy, and healthcare decision assistance.  相似文献   
90.
Family farming in various guises has been the dominant ownership and governance system in primary production over recorded history. This outcome has been controlled by farmers and their families, possibly due to tradition, opportunities, personal characteristics, skill sets and the nature of primary production. Of these, it is hypothesised that the farmers’ personal characteristics play a major part in the choice, and continuance, of current ownership and governance systems. Equally as important, they, and therefore the land ownership system, play a part in the efficiency of production systems and improvement of the biological and production environment.The benefits and difficulties of commonly used ownership systems in Western society are reviewed. Using a sample of New Zealand (NZ) farms, a comparison of the managers’ features for owner/operator, partnership and corporate based systems is presented. There were significant differences in many variables including the farmers’ age, education, number of children, asset levels, years on the current farm, and similar, but more importantly, the farmers in the ownership system groups had differing personal characteristics. Significantly, despite the corporate based farms employing more professional assistance, the profit levels were similar across ownership systems leaving the farmers’ characteristics the main factors correlating with system choice. However, governance systems per se are only marginally correlated with production systems and efficiency.As successive generations of farmers are unlikely to have different characteristics, and corporate based systems continue to exhibit similar profit levels, relatively simple family based systems will continue to dominate farm land ownership and control. The trends suggest family farms will increase in size and involve family conglomerates facilitating the management of larger, and in many cases multiple, farms. While currently there are few differences in biological efficiency between ownership systems, given the efficiency benefits of size and scale, this could well change with the increase of family conglomerates. Relative to increasing corporatisation, the continuance of family based ownership and governance will also be of benefit to the environment. When developing land policies, these highlighted relationships should be taken into account. This study is a first to consider personal characteristics relative to ownership.  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