A consistent nonparametric test for nonlinear causality—Specification in time series regression

Since the pioneering work by Granger (1969), many authors have proposed tests of causality between economic time series. Most of them are concerned only with “linear causality in mean”, or if a series linearly affects the (conditional) mean of the other series. It is no doubt of primary interest, but dependence between series may be nonlinear, and/or not only through the conditional mean. Indeed conditional heteroskedastic models are widely studied recently. The purpose of this paper is to propose a nonparametric test for possibly nonlinear causality. Taking into account that dependence in higher order moments are becoming an important issue especially in financial time series, we also consider a test for causality up to the Kth conditional moment. Statistically, we can also view this test as a nonparametric omitted variable test in time series regression. A desirable property of the test is that it has nontrivial power against T^1/2-local alternatives, where T is the sample size. Also, we can form a test statistic accordingly if we have some knowledge on the alternative hypothesis. Furthermore, we show that the test statistic includes most of the omitted variable test statistics as special cases asymptotically. The null asymptotic distribution is not normal, but we can easily calculate the critical regions by simulation. Monte Carlo experiments show that the proposed test has good size and power properties.     

An evaluation of incentive regulation: Corrections

This note re-estimates our model of the determinants and impacts of cost component incentive regulation using an improved data set which avoids double-counting firm observations. It also tests alternative specifications of the relationships. While cost component incentive regulation improves engineering efficiency (heat rates), it does not improve economic efficiency. Thus, our earlier findings are not altered by the smaller data set or by model respecification.     

Revenue‐enhancing Trade Liberalization in a Differentiated Duopoly

Existing studies suggest that in developing countries, tax reforms that increase consumption taxes can compensate for shortfalls in revenue from a tariff reduction. However, these revenue‐enhancing tariff–tax reforms have a critical shortcoming—they generally reduce welfare under imperfect competition. This paper shows that tax reforms such as consumption tax reforms do not necessarily have to be implemented to make up for revenue shortfalls from tariff reductions under imperfect competition, because trade liberalization through tariff cuts leads to an increase in government revenue when domestic and imported goods have a high substitutability. This revenue‐enhancing effect of a tariff reduction occurs for a wider degree of product substitutability when initial tariff and consumption tax rates are high. More importantly, we show that even if initial tariff and consumption tax rates are sufficiently low, a tariff reduction still increases government revenue for a low degree of product differentiation under Bertrand competition.     

How CSR Leads to Corporate Brand Equity: Mediating Mechanisms of Corporate Brand Credibility and Reputation

The purpose of this study is to investigate the relationships among corporate social responsibility (CSR), corporate brand credibility, corporate brand equity, and corporate reputation. Structural equation modeling analysis provided support for the hypotheses from a sample of 867 consumers in South Korea. The results showed that CSR has a direct positive effect on corporate brand credibility and corporate reputation. In addition, the results indicate that corporate brand credibility mediates the relationship between CSR and corporate reputation. Moreover, corporate brand credibility mediates the relationship between CSR and corporate reputation. Finally, the relationship between CSR and corporate brand equity is sequentially and fully mediated by corporate brand credibility and corporate reputation. The theoretical and managerial implications of the results and limitations are discussed, and future research directions are suggested.     

How does CRM technology transform into organizational performance? A mediating role of marketing capability

Customer relationship management (CRM) technology has attracted significant attention from researchers and practitioners as a facilitator of organizational performance. Even though companies have made tremendous investments in CRM technology, empirical research offers inconsistent support that CRM technology enhances organizational performance. Given this equivocal effect and the increasing need for the generalization of CRM implementation research outside western context, the authors, using data from Korean companies, address the process concerning how CRM technology translates into business outcomes. The results highlight that marketing capability mediates the association between CRM technology use and performance. Moreover, a customer-centric organizational culture and management system facilitate CRM technology use. This study serves not only to clarify the mechanism between CRM technology use and organizational performance, but also to generalize the CRM results in the Korean context.     

沥青蜡含量试验方法的研究

通过对蜡含量比对试验的数据分析,结合蜡含量日常试验中遇到的问题,浅析交通部行业规范《公路工程沥青及沥青混合料试验规程》中沥青蜡含量试验方法,对准确测定沥青蜡含量结果有着一定的意义。     

The Value-relevance of Earnings and Book Value, Ownership Structure, and Business Group Affiliation: Evidence From Korean Business Groups

Abstract:  We investigate the quality of two primary accounting summary measures, i.e., earnings and book value, provided by firms belonging to Korean business groups (chaebols). We find that the value-relevance of earnings and book value is significantly smaller for firms affiliated with business groups. We also find that cross-equity ownership (a proxy for the agency problem between controlling and minority shareholders) negatively affects value-relevance, while foreign equity ownership (a proxy for the monitoring effect) positively affects value-relevance. This evidence is consistent with the view that the poor quality of earnings and book value provided by chaebol-affiliated firms is due to the inherently poor governance structure of chaebols.     

Estimating Korea's Exchange Rate Exposure

This paper conducts an empirical analysis of the exchange rate exposure of 392 Korean firms by employing not only changes in the exchange rate but also the standard deviation of exchange rates as foreign exchange risk. A logit model is also used to identify the major factors in exchange rate exposure. The empirical results in the case of using the standard deviation of exchange rates suggest that: the number of firms showing significant exchange rate exposure has been relatively increasing; exchange rate exposure is more likely for export‐oriented manufacturing industries than for nonmanufacturing industries; and large firms using hedging methods are likely to show a low degree of exchange rate exposure.     

Northeast Asian economic regionalism: A Korean view

State failure is more common than generally assumed and often has distinctly negative consequences that may manifest themselves in neighboring countries. For this reason, it has attracted considerable attention in academic and policy circles alike. The researchers exploring the phenomenon have followed a rather narrow path, however, and there is substantial scope to broaden the breadth of inquiry. While the analytical efforts over the past decade to come to grips with the phenomenon of state failure have borne fruit in terms of identifying the key independent variables, the understanding of the mechanism through which they exert their influence on the dependent variable has not been significantly enhanced. The assertion is particularly valid with respect to adverse and abrupt regime transitions. The purpose of this paper is to examine, in light of the author's experience in grappling with state failure in the Chinese context, the potential for systematically expanding the research agenda in a conceptual/theoretical direction.     

植入式广告对观众品牌认知、记忆和购买意向的影响——关于真人秀节目《改头换面:家庭版》的实证研究

本文采用组内实验的设计,测试了真人秀节目《改头换面：家庭版》中的植入式广告的面积、位置、时间以及观众对于植入式广告的态度对观众的品牌认知、记忆和购买意向的影响。数据分析显示,植入式广告在电视节目中出现的时间长短对观众的品牌认知、记忆和购买意向均有显著影响,时间越长,观众越易于记住并购买该品牌。植入式广告的大小影响观众对品牌的认知和记忆,但对购买意向没有影响。植入式广告的位置影响观众对品牌的记忆,但对品牌认知和购买意向没有影响。观众对植入式广告的态度,无论是正面还是负面,对他们的品牌认知、记忆和购买意向都没有显著影响。