We find the sufficient conditions for the existence of multiple equilibria in Tullock-type contests, and show that asymmetric equilibria arise even under symmetric prize and cost structures. We then present existing contests where multiple equilibria exist under reasonably weak conditions. 相似文献
In two studies, we show that features shared by products (common features) do not cancel out during the decision-making process but in fact are consequential as they decrease desire for delay in decision making. In study 1, we show that as the amount of available information about product features increases, decision delay decreases in spite of the additional information being identical across the products. Further, we also find that this effect is partially mediated by information adequacy. In study 2, we show that despite the overall difficulty of making decisions under avoidance?Cavoidance versus approach?Capproach conflict, an increase in common features decreases decision delay under both conflict conditions. 相似文献
Despite the general success of farmer-capacity-building methods such as Farmer Field School in promoting pest management innovations, only those farmers directly involved benefit. How can agricultural extension enable farmer-to-farmer learning about botanical pesticides beyond such schools? We wanted to know how different learning methods, such as video shows and workshops, change farmers’ knowledge, attitudes and practices about botanical pesticides. This paper explains how video engages men and women farmers in spreading botanical pesticides across 12 villages in Bogra District, north-western Bangladesh. We conducted ex ante and ex post surveys among farmers from November 2009 to September 2010. For data analysis, we used t-test and McNemer and Wilcoxon sign rank tests. Our findings suggest that video improves the ability of both male and female farmers to communicate about pest management among themselves and with other stakeholders, as ‘intricate ethno-agricultural practices’. Video-mediated learning sessions are more effective than conventional workshop training in enhancing farmers’ knowledge about botanical pesticides, changing their attitude and finally taking a decision to adopt these methods. In other words, video is capable of communicating complex issues such as the biological and physical processes that underlie pest management innovations. From our case, we conclude that agricultural extension is more effective with the use of facilitated video learning and that this process clarifies complex agro-ecological principles, bias and normative perceptions of the learners. Also, video-mediated learning is not only transferable across villages, but also works well in combination with other media, such as radio, television and mobile phones. 相似文献
The Effect of Foreign Ownership Restrictions on Stock Price Dynamics. —This paper uses Finnish data to explore the impact of foreign ownership restrictions on the dynamic properties of domestic stock prices. These restrictions create unrestricted stocks (foreign and domestic ownership) and restricted stocks (domestic ownership). Unrestricted share prices are significantly more volatile than those of restricted shares but their means are not significantly different from each other. The returns on the two types of shares are found to be generated by an error correction model. These results support the hypothesis that the unrestricted share prices tend to overshoot relative to equilibrium with the arrival of new information. 相似文献
This paper investigates the substitutability between money and near-money assets during the period 1976 to 1996 in Switzerland. Financial developments have made a variety of instruments available to store wealth and conduct economic transactions. These developments have generated a “near money” component in households’ and businesses’ portfolio balances. It is important to evaluate the effect of “near-money” on money demand and the effectiveness of monetary policy. Towards this goal, five monetary assets: currency and demand deposits at commercial banks, demand deposits with the postal system, deposits on transaction accounts with banks, savings deposits and time deposits are considered. We evaluate the degree of substitutability among these assets using the Morishima elasticity. Results show that various monetary assets substitute for one another. Consistent with a high degree of diversification, the Morishima elasticity is significantly larger when adjustment takes place in the price of a relatively broader monetary asset as compared with a narrower one. Targeting a broad monetary aggregate captures a variety of assets that contribute to liquidity and aggregate demand, enhancing the effectiveness of monetary policy. Nonetheless, high elasticity of substitution between monetary assets has made it increasingly difficult to target money demand via changes in the interest rate. As a result, in 1999 the Swiss National Bank abandoned monetary targeting in favor of an expected inflation target.
This paper presents a generalized mathematical model for forecasting technological substitution under a wide variety of circumstances. Some of the existing models are shown as special cases of the generalized model. Methods are also suggested for improving the reliability of the model by taking corrective measures on the available data and following a step-wise forecasting procedure. 相似文献
This article argues that the traditional belief that “consumer ethnocentrism is a phenomenon of the developed countries only” is no longer true. To establish this argument, this study assesses the applicability of the Consumer Ethnocentric Tendencies Scale (CETSCALE) to a developing country Bangladesh. The methodology is based on 788 samples collected from 27 districts of Bangladesh. Results show that for three chosen sociodemographic groups namely, students, job holders, and businessmen, the CETSCALE is to a much extent applicable as the groups have shown positive attitudes in retaining 12 to 14 items out of the 17 items of the original scale. 相似文献
This paper examines public–private partnerships in micro-finance, whereby NGOs can help in channelizing credit to the poor, both in borrower selection, as well as in project implementation. We argue that a distortion may arise out of the fact that the private partner, i.e. the NGO, is a motivated agent. We find that whenever the project is neither too productive, nor too unproductive, reducing such distortion requires unbundling borrower selection and project implementation, with the NGO being involved in borrower selection only. Further, we compare and contrast two alternative credit delivery mechanisms, the linkage mechanism (which is the focus of this paper), with the ‘Grameen’ one. 相似文献
This study proposes an integrated, reverse logistics supply chain planning process with modular product design that produces and markets products at different quality levels. A mixed integer programming (MIP) model formulates the overall planning process required to maximize profit by considering the collection of returned products, the recovery of modules and the proportion of the product mix at different quality levels. This paper proposes the collection of returnables (end-of life, defective, product under warranty) through retail outlets combined with the recovery of modules from the collected products using a network of recovery service providers. The proposed modular product design approach would create a design criterion that provides an improved recovery process at a lower cost. This study uses a total supply chain view that considers the production, transportation and distribution of products to customers, while a numerical problem illustrates the applicability of the models. 相似文献
Although there has been considerable theoretical support outlining a positive relationship between religiosity and voluntary simplicity, there is limited empirical evidence validating this relationship. This study examines the relationships among religious orientations (Allport and Ross in J Pers Soc Psychol 5(4):432–443, 1967) and voluntary simplicity in a sample of Australian consumers. The results demonstrate that intrinsic religiosity is positively related to voluntary simplicity; however, there is no relationship between extrinsic religiosity and voluntary simplicity. Furthermore, this research investigates the processes through which intrinsic religiosity affects voluntary simplicity. The relationship between intrinsic religiosity and voluntary simplicity is sequentially mediated by communal/personal well-being and environmental well-being. The findings not only identify a prosocial role of intrinsic religiosity in motivating voluntary simplicity, but also indicate that secular pursuits that enhance communal/personal well-being and environmental well-being may also motivate voluntary simplicity. 相似文献