A framework for the selection of Six Sigma projects in services: case studies of banking and health care services in Taiwan

This study develops a framework for effectively implementing service Six Sigma projects. The framework is composed of four phases: (1) initial project identification, which deploys candidate projects in accordance with a firm’s strategic goals, (2) project value assessment, which evaluates project’s value based on the financial return, cost, and its impact on employee behavior, (3) project complexity assessment, which examines scope, data availability, and risk associated with the project, and (4) project prioritization, which identifies Six Sigma projects and categorizes them into black belt and green belt categories. Two cases in banking and health care services are discussed to demonstrate the proposed framework.     

How different types of partners influence innovative product sales: Does technological capacity matter?

Extant empirical studies examine the effect of different types of partners on innovative product sales. Although these studies present ambiguous results, little research pays attention to the factors leading to this ambiguity. Therefore, this study investigates how technological capacity affects the relationships between different types of partners and innovative product sales. Based on a sample of manufacturing firms from the technological innovation survey, this study reveals several interesting results. First, for the sales from significantly improved products, technological capacity positively impacts on the links between the sales and collaborations with suppliers and also with customers, but negatively moderates with competitors and with research organization. Second, however, on the sales of marginally changed products, technological capacity negatively affects the collaboration with suppliers, but positively impacts on alliance with research organizations. These results increase understanding of the relationships between different types of partners and innovative product sales.     

Risk,balanced skills and entrepreneurship

This paper proposes that risk aversion encourages individuals to invest in balanced skill profiles, making them more likely to become entrepreneurs. By not taking this possible linkage into account, previous research has underestimated the impacts of both risk aversion and balanced skills on the likelihood individuals choose entrepreneurship. Data on Dutch university graduates provide an illustration supporting our contention. We raise the possibility that even risk-averse people might be suited to entrepreneurship; and it may also help explain why prior research has generated somewhat mixed evidence about the effects of risk aversion on selection into entrepreneurship.     

Understanding the performance of software-as-a-service based on service-dominant logic

How to improve performance of software-as-a-service remains a problem. Drawing from the service-dominant logic, the relational view, and the social exchange theory, we develop a model to delineate the relationships between performance, relationship-specific services, and internal services. The premise of this model is that the service provider's internal services play a key role in motivating the client to collaborate with the vendor. This helps the provider offer relationship-specific services, characterized as knowledge-based and process-based services and the provider's performance relies on these services. Results of empirical testing using responses from 102 firms support the proposed hypotheses. Our findings provide a number of useful implications for research and managers.     

An exploratory investigation of the firm size effect

We investigate the firm size effect for the period 1958 to 1977 in the framework of a multi-factor pricing model. The risk-adjusted difference in returns between the top five percent and the bottom five percent of the NYSE firms is about one to two percent a year, a drop from about twelve percent per year before risk adjustment. The variable most responsible for the adjustment is the sensitivity of asset returns to the changing risk premium, measured by the return difference between low-grade bonds and long-term government bonds.     

Effects of Educational Expenditures on Regional Inequality in the Social Quality of Life

A bstract . Earlier studies by Liu on Quality of Life (QOL) indicators have pointed out the problems of concentration interregional inequality among the fifty states in U.S.A. Noting that the interregional inequality problem has been gradually alleviated over the past two decades, this paper attempts to provide some rudimentary explanations about this converging phenomenon through a labor market adjusting process towards social, economic and spatial equilibrium. Published state data and QOL indicators developed by Liu for 1960, 1970 and 1978 tend to support the hypothesis that investment in human resources , especially through improved elementary and secondary education , would enhance social mobility which would in turn improve labor and capital productivity. The reduced regional inequality in economic QOL seemed to be more a response than a cause when compared to that in social QOL, because variations in educational expenditures were found to be more significantly related to the social QOL indicators than to the economic ones.     

A heteroscedasticity-consistent covariance matrix estimator for time series regressions

This paper provides a covariance matrix estimator for the ordinary least squares coefficients of a linear time series model which is consistent even when the disturbances are heteroscedastic. This estimator does not require a formal model of the heteroscedasticity. One can also obtain a direct test of heteroscedasticity, although Monte Carlo experiments show that it may have low power.     

International risk sharing and the choice of exchange-rate regime

This paper examines the argument that the fixed exchange-rate regime should be preferred to the flexible rate regime because the former allows risk sharing across countries while the latter does not. The analysis is performed in a two-country overlapping generations model, where markets are incomplete under all exchange regimes. It is shown that risks are pooled across countries when the equilibrium exchange rate is constant across states of nature, which arises under the fixed rate regime with or without capital restriction, and under the flexible rate regime without capital restriction. Risks are not pooled across countries when the equilibrium exchange rate is different across states of nature, which arises under the flexible rate regime with capital restriction. But in a model with incomplete markets, the ability to share risk across countries in the regimes with constant exchange rates does not necessarily lead to higher welfare than the inability to share risk in the regime with random exchange rates.