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71.
Forecasting future demand for large-screen television sets using conjoint analysis with diffusion model 总被引:3,自引:1,他引:3
Jongsu Lee Youngsang Cho Jeong-Dong Lee Chul-Yong Lee 《Technological Forecasting and Social Change》2006,73(4):362-376
The methodological framework proposed in this paper addresses two limitations of the basic Bass diffusion model: that it does not reflect competition among products nor does it forecast demand for products that do not exist in the marketplace. The model consists of four steps. First, to investigate consumer preferences for product attributes, we use conjoint analysis to estimate the utility function of consumers. Next we estimate the dynamic price function of each competing product to reflect technological changes and the evolving market environment. Then we derive dynamic utility function by combining the static utility function and the price function. Finally, we forecast the sales of each product using estimated market share and sales data for each period, which are derived from the dynamic utility function and from the Bass diffusion model, respectively.We apply this model to South Korea's market for large-screen televisions. The results show that (1) consumers are sensitive to picture resolution and cost and (2) in the near future, should the market see the introduction of liquid crystal display (LCD) TVs with screens larger than 50 inches, the high resolution and steep price drop of LCD will lead LCD TVs to capture a larger market share than TVs with other display types. Finally, our results show that TVs with 40-inch screens are preferred over TVs with larger screens. 相似文献
72.
73.
In-Koo Cho 《The Review of economic studies》2005,72(4):1031-1055
This paper proves that the monotonicity of bidding strategies together with the rationality of bidders implies that the winning bid in a first price auction converges to the competitive equilibrium price as the number of bidders increases ( Wilson, 1977 ). Instead of analysing the symmetric Nash equilibrium, we examine rationalizable strategies ( Bernheim (1984) , Pearce (1984) ) among the set of monotonic bidding strategies to prove that any monotonic rationalizable bidding strategy must be within a small neighbourhood of the „truthful” valuation of the object, conditioned on the signal received by the bidder. We obtain an information aggregation result similar to that of Wilson (1977) , while dispensing with almost all symmetric assumptions and using a milder solution concept than the Nash equilibrium. In particular, if every bidder is ex ante identical, then any rationalizable bidding strategy must be within a small neighbourhood of the symmetric Nash equilibrium. In a symmetric first price auction, the symmetry of outcomes is implied rather than assumed. 相似文献
74.
We provide a new test for equality of two symmetric positive-definite matrices that leads to a convenient mechanism for testing specification using the information matrix equality or the sandwich asymptotic covariance matrix of the GMM estimator. The test relies on a new characterization of equality between two dimensional symmetric positive-definite matrices and : the traces of and are equal to if and only if . Using this simple criterion, we introduce a class of omnibus test statistics for equality and examine their null and local alternative approximations under some mild regularity conditions. A preferred test in the class with good omni-directional power is recommended for practical work. Monte Carlo experiments are conducted to explore performance characteristics under the null and local as well as fixed alternatives. The test is applicable in many settings, including GMM estimation, SVAR models and high dimensional variance matrix settings. 相似文献
75.
Charles H. Cho Jay Heon Jung Byungjin Kwak Jaywon Lee Choong-Yuel Yoo 《Journal of Business Ethics》2017,141(2):393-409
According to our data, 38.5 % of S&P 1500 firms have at least one professor on their boards. Given the lack of research examining the roles and effects of academic faculty as members of boards of directors (professor–directors) on corporate outcomes, this study investigates whether firms with professor–directors are more likely to exhibit higher corporate social responsibility (CSR) performance ratings. Results indicate that firms with professor–directors do exhibit higher CSR performance ratings than those without. However, the influence of professor–directors on firm CSR performance ratings depends on their academic background—the positive association between the presence of professor–directors and firm CSR performance ratings is significant only when their academic background is specialized (e.g., science, engineering, and medicine). Finally, this positive association weakens when professor–directors hold an administrative position at their universities. 相似文献
76.
Use of behavioral reasoning theory to examine the role of social responsibility in attitudes toward apparel donation 下载免费PDF全文
MinJung Park Hyojung Cho Kim K. P. Johnson Jennifer Yurchisin 《International Journal of Consumer Studies》2017,41(3):333-339
Drawing on behavioral reasoning theory, this study investigated drivers of young consumers’ apparel donation behavior. By examining the impact of values (i.e., benevolence and power) and reasons (i.e., other‐oriented reasons and self‐oriented reasons) on attitudes, this study highlights the different motivations individuals have for donating clothing. As predicted, benevolence was positively related to other‐oriented reasons for donations and power was positively related to self‐oriented reasons for donations. Both other‐ and self‐oriented reasons for donating influenced attitudes related to apparel donation behavior. These findings offer an overarching explanation for the seemingly disparate reasons for apparel donation previously identified. 相似文献
77.
Cheol-Joo Cho 《Economic Systems Research》2017,29(3):418-429
This paper demonstrates both theoretically and empirically that when outputs instead of final demands are exogenously predetermined, the traditional Leontief final demand model overestimates economic impact, and even more so in a multiregional context. We assess this premise vis-à-vis the Leontief output model using the 2013 interregional input–output table of the Republic of Korea. We find that from a multiregional perspective the standard Leontief final demand model yields substantially biased output multipliers for Chungbuk Province. 相似文献
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79.
Customers' perceptions of price differ in the online environment due to the presence of price comparison sites. The purpose of this study is to examine how price comparison sites affect price and value perceptions of online shoppers across different product types and price consciousness levels of online shoppers. The results of the study indicate that the price information provided by an online price comparison site influences online shoppers' perceptions of internal reference prices. However, the influence of a price comparison site on value perception differs according to product type. As evidenced by the significant interaction effect between product type and price comparison site information, the presence of price comparison sites increases both transaction and acquisition value perceptions for the non-look-and-feel product category (e.g., notebook computers), but not for the look-and-feel product category (e.g., jeans). Contrary to the expectation, online shoppers' price consciousness influences their price and value perceptions independently of price comparison site information. 相似文献
80.
We develop an index measuring the three main dimensions – prosecution, protection, and prevention – of the anti‐trafficking policies of the governments of up to 180 countries over the 2000?2010 period. Overall, developed countries perform better than the rest of the world; compliance with prosecution policy is highest, while governmental efforts to protect victims of human trafficking remain weakest. We employ the new indices to investigate which factors determine anti‐trafficking policies. We find that compliance with anti‐trafficking policies significantly decreases with corruption and is higher in countries that also respect the rights of women. We also find some tentative evidence for spatial dependence in anti‐trafficking policies. 相似文献