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   815篇
  免费   41篇
  国内免费   3篇
财政金融   157篇
工业经济   48篇
计划管理   123篇
经济学   141篇
综合类   33篇
运输经济   11篇
旅游经济   18篇
贸易经济   242篇
农业经济   36篇
经济概况   50篇
  2024年   1篇
  2023年   19篇
  2022年   17篇
  2021年   27篇
  2020年   29篇
  2019年   34篇
  2018年   30篇
  2017年   37篇
  2016年   45篇
  2015年   29篇
  2014年   43篇
  2013年   118篇
  2012年   50篇
  2011年   58篇
  2010年   39篇
  2009年   27篇
  2008年   56篇
  2007年   40篇
  2006年   36篇
  2005年   28篇
  2004年   19篇
  2003年   12篇
  2002年   19篇
  2001年   15篇
  2000年   9篇
  1999年   5篇
  1998年   6篇
  1997年   3篇
  1996年   2篇
  1994年   1篇
  1993年   3篇
  1992年   1篇
  1985年   1篇
排序方式: 共有859条查询结果,搜索用时 15 毫秒
61.
Abstract

The overall objective of this article is to examine the impact of interorganizational channel bureaucratic structure on boundary interpersonal trust. The authors present a model where the bureaucratic structure (viz., formalization, participation and centralization) influences interpersonal communication, which functions as a mediator determining the level of interpersonal trust in the supply chain. The authors conceptualize communication as a multidimensional construct, reflective of both instrumental and social communications. The empirical study, conducted in a farm equipment supply chain, indicates that formalization and participation facilitate whereas centralization inhibits communication, which in turn enhances interpersonal trust. Theoretical and managerial implications as well as directions for further research are discussed at the end of the paper.  相似文献   
62.
We consider a consumption and investment problem where the market presents different regimes. An investor taking decisions continuously in time selects a consumption–investment policy to maximize his expected total discounted utility of consumption. The market coefficients and the investor's utility of consumption are dependent on the regime of the financial market, which is modeled by an observable finite-state continuous-time Markov chain. We obtain explicit optimal consumption and investment policies for specific HARA utility functions. We show that the optimal policy depends on the regime. We also make an economic analysis of the solutions, and show that for every investor the optimal proportion to allocate in the risky asset is greater in a "bull market" than in a "bear market." This behavior is not affected by the investor's risk preferences. On the other hand, the optimal consumption to wealth ratio depends not only on the regime, but also on the investor's risk tolerance: high risk-averse investors will consume relatively more in a "bull market" than in a "bear market," and the opposite is true for low risk-averse investors.  相似文献   
63.
Cooperatives are established to improve farmers' production conditions, to increase their bargaining power and to enable them to benefit from modern value chains. In China, farmers are members of a cooperative for multiple reasons. Little is known on whether and how cooperative membership affects farmers’ choice of marketing channels. This paper examines determinants of farmers’ choice of marketing channels, especially how cooperative membership impacts upon this choice. Our analysis is based on survey data collected in 2015 among 625 apple growing farm households in the provinces Shaanxi and Shandong. We employ endogenous switching probit models to deal with potential endogeneity of membership in estimating the determinants of marketing channel choices. We find that cooperative membership has a positive impact on selling to wholesalers and a negative impact on selling to small dealers, but no significant impact on selling to the cooperative itself. As products sold through cooperatives generally comply with relatively stringent food quality and safety standards, these results imply that policies promoting cooperative members to sell their products through cooperatives are likely to have a significant impact on food quality and food safety in China.  相似文献   
64.
This paper applies the multivariate version of the Forbes and Rigobon (2002) contagion test, as proposed by Dungey et al. (2005a), to detect contagion effects in the Exchange Rate Mechanism (ERM) of the European Monetary System (EMS). Crisis and non-crisis observations are determined endogenously via a Markov-switching vector autoregression (MSVAR). We show that the MSVAR is suitable for this purpose, as it does particularly well in identifying the 11 realignments of the ERM. We examine whether Denmark’s rejection of the Maastricht Treaty and Italy’s competitiveness problems affected other EMS participants and find evidence for contagion.  相似文献   
65.
The theory of capitalist urbanization posits that the built form serves as a crucial sink through which overaccumulated capital is ‘switched' from industrial production into long‐term investment in urban infrastructure. Since Harvey's (1978) deployment of the theory, researchers have attempted to empirically substantiate the switching thesis with limited success. Christophers (2011) revisited the debate with new data and methods to support the claim that significant investment had switched into the built environment at the onset of the 2007/08 financial crisis. However, Christophers' study overlooks how crises are also geographically displaced. This article analyses Spanish trade data for the years 1993 to 2013, the years prior and subsequent to the housing‐induced economic crisis (1997 to 2006). Two studies are undertaken. The first replicates Christophers' methodology to assess how and to what extent a sectoral switch into property investment occurred in Spain between 1997 and 2006. The second modifies the methodology to investigate the extent to which overaccumulated capital in Spain has been geographically displaced through investment in the Moroccan building industry since 2006. These approaches situate uneven development (geographical switching) and turnover time (sectoral switching) as the twin dynamics through which capitalist urbanization is spatio‐temporally fixed.  相似文献   
66.
We study the impact of financial contagion on the dynamic asset allocation problem of a CRRA investor facing an incomplete market with two risky assets. We apply a Markov chain regime-switching framework with state-dependent jump intensities, diffusion volatilities and diffusion correlations. The key model feature that a switch to the bad contagion regime is triggered by a loss in one of the risky assets allows for the implementation of a hedging demand against contagion risk. Moreover, a state-dependent diffusion correlation combined with heterogeneity in jump intensities and volatilities can, e.g., generate a flight to quality effect upon a systemic jump.  相似文献   
67.
Based on a novel extension of existing multivariate Markov-switching models, we provide the reader with a useful tool for analyzing current business conditions and making predictions about the future state of the Euro-area economy in real time. Apart from the Industrial Production Index, we find that the European Commission Industrial Confidence Indicator, which is issued with no delay, is very useful for constructing the real-time predictions.  相似文献   
68.
The price that a regulated access provider charges for shifting customers between service providers has significant welfare implications. Typical regulatory approaches to pricing, such as pricing based on fully allocated cost or incremental cost, ignore the characteristics of consumer demand. A theoretical alternative, Ramsey pricing, considers only the elasticity of demand for given products. This paper directs attention to the competitive process. Using US long-distance telephone services as an example, this paper shows how empirical evidence concerning customer acquisition costs, customer switching costs, and churn among service providers can help to inform price regulation.  相似文献   
69.
Viterbi算法是卷积码最常用的译码算法,在卷积码约束长度较大,译码时延要求较高的场合,如何实现低硬件复杂度的Viterbi译码器成为新的课题。本文提出新颖的Viterbi路径权重算法、双蝶形译码单元结构、高效的状态度量存储器等技术,使Viterbi算法充分和FPGA灵活原片内存储和逻辑单元配置方法相结合,发挥出最佳效率。用本算法在32MHz时钟下实现的256状态的Viterbi译码器译码速率可达400Kbps以上,且仅占用很小的硬件资源,可以方便地和Furbo译码单元等集成在单片FPGA,形成单片信道译码单元。  相似文献   
70.
定量研究当零售商具有促销策略时的渠道协调。在此种情形下,渠道成员独立决策时线形契约无法促成渠道协调,通过博弈模型分析,给出一种协调数量折扣价格契约,并对渠道协调后的利润分配作了初步探讨。结果表明,制造商促使该类渠道达成协调的数量折扣有无穷多个,在一定条件下渠道成员双方利润均会增加,并给出了算例分析。同时根据数量折扣形式,对传统的“入场费”问题进行了再讨论,得出了“入场费”与渠道协调之间的关系,进而揭示出“入场费”在实践中深层含义。  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