Kwangtae Park

Development of an Evaluation Scheme for Product-Service Systems

This paper proposes an evaluation scheme for PSS with a focus on constructing evaluation criteria. The proposed scheme has a four-layered hierarchical structure. The four layers refer to perspectives, dimensions, categories, and aspects. The sustainability and customer value perspectives are considered. The sustainability perspective consists of 3P dimensions, while the customer-value perspective consists of quality and cost dimensions. Each dimension is further classified into categories, and finally into more detailed aspects. The scheme has 5 dimensions, 24 categories, and 87 aspects in total. The PSS evaluation scheme can serve as an effective aid in designing as well as evaluating a PSS.

An Evaluation Scheme for Product-Service System Models with a Lifecycle Consideration from Customer’s Perspective

The product-service system (PSS) is a business system in which its integrated products and services jointly fulfill customer needs. This research proposes an evaluation scheme for PSS models. The PSS model evaluation scheme consists of evaluation criteria and methods. The current paper mainly focuses on the introduction of the evaluation criteria and their application. The set of evaluation criteria has a four-layered hierarchical structure which has 2 perspectives, 5 dimensions, 21 categories, and 94 items in total. They are designed to consider the provider and customer perspectives, and all 3P (profitability, planet, and people) dimensions. They cover various stages of a PSS lifecycle, namely, design, production, sales (or purchase), usage as well as disposal. To illustrate the usefulness of the proposed evaluation scheme, a few PSS cases are first modeled using an existing PSS visualization tool, and then evaluated using the scheme. Case studies show the proposed evaluation scheme is workable to assess the potential value of the PSS models in question; it provides an extensive knowledge base for PSS evaluation, thereby serves as an efficient and effective aid to practitioners for successful PSS development.

Product-Service System : Current Status and Research Issues

Korea University Business School (KUBS).Product-service system (PSS) is a novel type of business model integrating products and services in a single system. It provides a strategic alternative to product-oriented economic growth and price-based competition in the global market. This paper first reviews the current status of PSS, including its concept, characteristics, benefits, and cases. This paper then reviews the existing literature and identifies major research issues for three main phases of a PSS development lifecycle, namely, PSS design, PSS evaluation, and PSS operation. This research is expected to contribute to promoting awareness and improving understanding of PSS in our society and planning of future research in this field.

A Relation-based Model for Analyzing Ecosystems of Products, Services and Stakeholders

Business School, Korea University, Seoul 136-701, KoreaA central theme in recent IT (information technology) industry is a mobile ecosystem. While a concept of business ecosystem, which is an economic community of firms and individuals producing and consuming goods and services, has been around for about 20 years now, the recent spotlight is mainly caused by the enormous success of iPhone. Many hand-set makers or platform developers want to mimic Apple’s iPhone ecosystem from which both application developers and hand-set users can benefit. In this study, a representation model of the business ecosystem is proposed for supporting systematic design and analysis of ecosystems. Whereas previous studies also proposed some representation models, they emphasized only on the value chain between parti-cipating players. The proposed model, which is named relation-based ecosystem model, represents an ecosystem with the requirement relationships between product and service components and the roles of players, as well as their value chain. Such comprehensive representation explicitly reveals the strategic difference between ecosy-stems. This advantage was illustrated by comparing a Korean traditional mobile ecosystem and an emerging smart-phone ecosystem represented by the proposed model.