对小地区失业统计差额比的推定

本文对韩国国内行政区域如市郡区等小地区的失业统计共同差额比进行推定的方法有联合推定量,Woolf推定量和Mantel-Haenszel推定量等。对这个推定量的可信度是通过偏差和平均平方误差的概念来进行比较的。从对京畿地区经济活动人口调查情况看,这个地区内的24个市郡单位行政自治地区的男、女失业率差额比的偏差及平均平方误差是通过本次研究提出的推定程序来推定的。这些推定数的稳定性和效率性可以通过相对偏差和相对平均误差平方根来评价。Woolf推定量或Mantel-Haenszel推定量比联合推定量更为稳定,从其效率性来看三者很相似。     

感知购物环境对旅游者购物行为的影响机制研究——旅游者购物情绪的媒介作用

在相关研究的基础上,本文运用结构方程建模方法建立了感知购物环境对旅游者购物行为的全影响和间接影响模型,通过对两个模型的对比分析,发现了感知购物环境影响旅游者购物行为的路径机制,即感知购物环境对旅游者购物行为的影响是通过改变旅游者的购物情绪而实现的,旅游者购物情绪在环境→情绪→行为这一路径中起到非常重要的媒介作用。最后,本文提出了管理建议。     

Disappearing Dividends: Implications for the Dividend–Price Ratio and Return Predictability

The conventional dividend–price ratio is highly persistent, and the literature reports mixed evidence on its role in predicting stock returns. We argue that the decreasing number of firms with a traditional dividend‐payout policy is responsible for these results, and develop a model in which the long‐run relationship between the dividends and stock price is time varying. An adjusted dividend–price ratio that accounts for the time‐varying long‐run relationship is considerably less persistent. Furthermore, the predictive regression model that employs the adjusted dividend–price ratio as a regressor outperforms the random‐walk model. These results are robust with respect to the firm size.     

Explaining Financial Management Behavior for Koreans Living in the United States

Using a cross‐cultural conceptualization with a targeted sample of Americans and Koreans, it was noted that Koreans exhibited more responsible financial management behavior than Americans after controlling for locus of control, financial knowledge, and income interactions. Overall, financial knowledge was positively related to responsible financial behavior. No direct effects on financial management behavior were noted for locus of control or household income. Locus of control was found to mediate the effect of financial knowledge on financial behavior for Koreans. Being Korean did moderate between financial knowledge and financial behavior.     

Consumer Self‐Confidence in Searching for Information

Consumer behavior is often driven by the extent to which consumers feel confident regarding their decisions, which frequently hinge, especially in high‐stakes situations, on their information search. This article examines a multidimensional self‐confidence concept to explore how consumer self‐confidence influences information search. Findings of a mail survey document that high‐confidence consumers engage in more intensive search activities and that demographic patterns shape consumer self‐confidence scores. The findings empirically support a multidimensional measurement of self‐confidence to predict search behavior and suggest avenues to enhance the self‐confidence needed to produce positive marketplace experiences.     

MEASURING PRICE ELASTICITY OF SECTORIAL IMPORTS

Previous published studies have estimated the long‐run cointegrating relationship to infer the price elasticity of imports, but a stable long‐run cointegrating relationship might not be detected in the data, especially in the case of sectoral data. This paper develops a method to estimate the price elasticity of imports based on a vector autoregression model, which can be applied when a stable long‐run cointegration relationship does not exist. The methods developed in past studies and our method are applied to Korean sectoral imports data to illustrate the usefulness of our method.     

INTERCONNECTION AGREEMENT BETWEEN INTERNET SERVICE PROVIDERS AND THE OPTIMAL POLICY INTERVENTION: THE CASE OF COURNOT‐TYPE COMPETITION UNDER NETWORK EXTERNALITIES*

We derive the optimal subsidy policy for an interconnection agreement between two symmetric Internet service providers (ISPs) competing á la Cournot in a network service market. The interconnection quality agreed upon is lower than the socially optimal level, as suggested by Crémer et al. (2000 ). In the basic model where both ISPs compete in the domestic market, the optimal investment subsidy rate depends positively on the strength of network externalities. In the extended model where home and foreign ISPs compete in the home market, the optimal subsidy rate for the home government is higher than in the basic model.     

A Fuzzy Cognitive Map-Based Bi-Directional Inference Mechanism: An Application to Stock Investment Analysis

The objective of this paper is to apply fuzzy cognitive map (FCM)-related techniques to (1) extract causal knowledge from a specific problem-domain, (2) construct a hierarchical knowledge base, and (3) perform a bi-directional inference. The causal knowledge base built by FCM can be described as a matrix form, guaranteeing mathematically compact operation compared with a production (if–then) knowledge base. Based on the causal knowledge base, we can break down a given decision problem into a multi-leveled one. Then bi-directional (downward or upward) inference can be applied to the multi-leveled problem to find a more robust solution. We applied our method to a stock investment analysis problem which is typical of highly unstructured problems in OR/MS fields. © 1997 by John Wiley & Sons, Ltd.     

Willingness to Pay for Information: An Analyst's Guide

This paper defines, illustrates, and critiques the different ways in which researchers have contemplated and estimated a consumer's willingness to pay for a particular attribute of a good or service. In particular, the authors are interested in exploring the apparent difficulty in measuring willingness to pay for information. It becomes more complicated to measure the value of having information when the actual information influences demand in its own right. This implies that information such as food dating is likely to be underproduced in a free market, even less than it is given the public goods aspect of the attribute. It also means that the bias in measuring willingness to pay will depend on whether the attribute in question adds value to the good.