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   2805篇
  免费   120篇
  国内免费   27篇
财政金融   276篇
工业经济   195篇
计划管理   827篇
经济学   401篇
综合类   130篇
运输经济   70篇
旅游经济   80篇
贸易经济   480篇
农业经济   220篇
经济概况   273篇
  2024年   15篇
  2023年   54篇
  2022年   30篇
  2021年   74篇
  2020年   128篇
  2019年   77篇
  2018年   84篇
  2017年   131篇
  2016年   121篇
  2015年   79篇
  2014年   176篇
  2013年   490篇
  2012年   141篇
  2011年   226篇
  2010年   138篇
  2009年   139篇
  2008年   147篇
  2007年   104篇
  2006年   103篇
  2005年   88篇
  2004年   54篇
  2003年   46篇
  2002年   39篇
  2001年   39篇
  2000年   38篇
  1999年   25篇
  1998年   29篇
  1997年   28篇
  1996年   21篇
  1995年   18篇
  1994年   11篇
  1993年   10篇
  1992年   11篇
  1991年   5篇
  1990年   1篇
  1989年   5篇
  1988年   2篇
  1987年   5篇
  1986年   1篇
  1985年   11篇
  1984年   3篇
  1983年   3篇
  1982年   2篇
排序方式: 共有2952条查询结果,搜索用时 406 毫秒
21.
Adaptive co-management brings together collaborative and adaptive approaches in pursuit of sustainable resource use and social-ecological resilience. Enthusiasm for this management approach, however, is countered by recent critiques regarding outcomes. A lack of evidence from consistent evaluation of adaptive co-management further exacerbates this situation. This paper revisits the issue of evaluation in natural resource management and recasts it in light of complex adaptive systems thinking. An evaluative framework for adaptive co-management is developed which directs attention toward three broad components: ecosystem conditions, livelihood outcomes and process and institutional conditions. Scale-specific parameters are offered for each component to facilitate systematic learning from experience and encourage cross-site comparisons. Conclusions highlight the importance of systematically incorporating evaluation into the adaptive co-management process and recognize the challenge for resource agencies and researchers to shift from a conventional to a complex adaptive system perspective.  相似文献   
22.
本文通过对烟台开发区生态工业园区发展现状与建设经验的调查分析,指出树立科学发展观,发展循环经济,建立促进循环经济发展的法律法规体系和科学的评价指标体系,有利于推动我国生态工业园区的发展与完善,对指导和发展我国生态工业园区有特别重要的意义。  相似文献   
23.
Synopsis It has been proposed that open thermodynamic systems will act to dissipate available energy gradients by self-organizing into coherent structures that, with time, evolve and develop into nested hierarchies – panarchies – that adapt to internal and external changes according to a characteristic adaptive cycle. This paper seeks to apply these ideas in the purely societal realm by investigating the role of money in economic systems. Money represents the value embodied in goods; a value that is separate from the exact nature of those goods. We suggest that money thereby liberates the ‘free value’ of economic desire and that this free value has properties analogous to energy. The result is the self-organization of structures and systems (‘econosystems’) that dissipate this ‘free value’. Econosystems act at different scales, and nested levels of econosystems form a panarchy, having effects that can be observed. In particular, it appears that money facilitates the creation of relationships between econosystem actors, increasing the connectedness of the econosystems that envelop those actors. We have identified a phenomenon whereby freed social value (i.e. money) can aggregate, or pool, at a larger econosystem scale in structures such as banks. These pools act as gradients that actors at the neighborhood scale can exploit for self-organization in the econosystem. Thus, econosystem actors appear to be freed from thermodynamic constraints by using money as a means of self-organization. However, because of these pools of aggregated social exergy, connectedness is increased at the larger scale of the econosystem. The potential consequence of this dynamic is that money may act to push larger scale econosystems toward a state of heightened vulnerability to collapse, while freeing smaller scale actors from apparent constraints. In this way, we propose that money acts to skew information feedback loops between econosystem actors and larger scale structures such as economies and ecosystems.   相似文献   
24.
The slow and endogenous twist of economic macro-structure makes up an important evolutionary feature of capitalist economies, and may be at the root of structural crisis. In this line, a Goodwinian growth model with increasing returns and profit-sharing that tries to picture a simple scenario of the seventies crisis is considered. It is shown that the exhaustion of the Kaldor-Verdoorn “productivity law” can entail, in a nonlinear framework, a “catastrophic” bifurcation from a “high” to a “low” growth path. Slow/fast dynamical systems then allow one to formalize a multiple time-scales dynamics where the growth path is shaped by the structural framework in which it takes place, but has also a long -un feedback. Structural change and crisis appear as long term and endogenous outcomes.  相似文献   
25.
论E企业的协同电子商务模式   总被引:5,自引:0,他引:5  
王玉 《物流科技》2007,30(6):57-59
协同阶段是电子商务的高级阶段,一个E企业要实现协同商务,需要根据市场、顾客需求和信息技术发展,建立起它的战略概念模式,根据它的概念模式建立它的商务模式,根据它的商务模式建立它的电子流程模式,然后用协同电子商务平台来实现,并建立其应用架构。  相似文献   
26.
旅游景区电子解说系统发展初探   总被引:4,自引:0,他引:4  
随着旅游的发展,旅游解说系统在景区的作用日益引起人们的注意,而电子旅游解说系统的出现,使看起来简单的解说系统融入了科技的因素。文章分析了电子解说系统的现状及与传统解说系统的区别,在此基础上提出了策划的原则及要素,为景区发展电子解说系统提供了借鉴。  相似文献   
27.
Changing trends and the nature of the work force dictate increased personal responsibility by employees and expanded use of self-management practices. Nevertheless, organizations also feel the need to maintain external control. We propose a progressive view of accountability theory which can resolve the dilemma of how internal and external control can effectively coexist. Success of accountability forces is determined primarily by the relationship between the principal (party to whom one is accountable) and the agent (employee). The agent’s felt responsibility is enhanced to the extent that accountability leads to the structuring of expectations, the agent’s perceptions of the task or activity as significant, and the agent’s perception of control over the situation. Propositions that may be used to guide future research are offered throughout the article.  相似文献   
28.
In this paper we study a generalization of the dynamic Leontief input–output model. We extend the standard dynamic Leontief model with the balance equation of non-renewable resources. Obviously, the non-renewable stocks will decrease, exploiting primary resources. In this study we examine the controllability of this extended model by taking the consumption as the control parameter. Assuming balanced growth for both consumption and production, we investigate how long these scarce resources will cover the input needs of production and how the lifetime of the system depends on the balanced growth rate and on the consumption. In doing so, we apply classic results from control theory and on eigenvalue problems in linear algebra.  相似文献   
29.
文章介绍了在直流并励电动机控制中引进模糊自动控制,可以实现电动机恒流起动、恒速运行,降低电机的故障率,保障它的运行。  相似文献   
30.
网络经济新模式——协同商务   总被引:13,自引:0,他引:13  
根据国内外有关协同商务的最新进展和研究成果,分析了协同商务产生的背景和动因,介绍了协同商务的概念、特点,提出了协同商务的初步框架结构和主要的使能技术,并对协同商务的应用现状和未来作了讨论。  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