• The Transactions of The Korean Institute of Electrical Engineers
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• v.61 no.2
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• pp.187-193
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• 2012

Nash Equilibrium (NE) is as useful tool for investigating a participant's strategic generation quantity in a competitive electricity market. Cournot model may give a mixed strategy NE instead of a pure strategy when transmission constraints are considered. A mixed strategy is difficult to compute, complicated to understand conceptually, and hard to implement in an electricity market practically. This paper presents that a mixed strategy does not appear in Stackelberg leader-follower model even under a transmission congestion. A solution method is proposed for the leader-follower model under a nondifferentiable space of a strategy variable. Based on the pure strategy NE with a transmission line congested, the merit of leader-follower model is shown from a social welfare point of view.

• International Journal of Aeronautical and Space Sciences
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• v.9 no.1
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• pp.31-41
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• 2008

This paper deals with the energy saving problem of the follower aircraft in the loose leader-follower formation geometry in which the lateral separation between formation members is more than a wingspan of the leader aircraft. This formation geometry offers no drag benefit, but has a strategic advantage. In the case of loose formation flight, the follower aircraft usually consumes more energy than the leader aircraft because the follower aircraft should use more thrust to maintain given formation geometry, especially during the turning phase from the outside of the leader"s flight path or join-up phase. A formation control scheme based on the energy maneuverability is proposed in this paper. To design the proposed control law, the velocity command is designed using feedback linearization for the horizontal formation geometry and then coverts it to the altitude command using the energy equation. Numerical simulation is performed to verify the effectiveness of the proposed controller.

• The Journal of Asian Finance, Economics and Business
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• v.7 no.10
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• pp.1035-1046
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• 2020

This study aims to find empirical evidence of causal relationship between strategy type, market orientation, strategic management accounting (SMA) strategic costing technique, and financial sector performance of private universities in Indonesia. The research object in this study are private universities in Yogyakarta, Indonesia. Yogyakarta is chosen because universities there are one of the barometers of higher education in Indonesia, and the city has quite a number of universities. The respondents in this study are the leader (manager) of private universities in Yogyakarta, Indonesia. The data analysis is done using SEM-PLS with WarpPLS 3.0 software. The results of this study show that market orientation has significant influence on the development and implementation of SMA strategic costing technique, while strategy type does not have significant influence on the development and implementation of SMA strategic costing technique. This study also finds that the implementation of SMA strategic costing technique significantly influences the financial sector performance of private universities in Yogyakarta, Indonesia. This study provides theoretical implication regarding SMA development in universities that consider that contingency factors (market orientation) can encourage increased organizational performance. It indicates support for contingency theory that states there are no general principles that apply to all situations.

• The Journal of Information Technology
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• v.4 no.3
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• pp.35-48
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• 2001

Information technology leadership roles have undergone fundamental change over the past decade. Despite increase interest in recent years, little empirical research on Information Technology has been done. This paper suggests results from a survey in Korea on Information Technology. The survey collected data on general leadership roles such as information roles, decisional role and interpersonal role, as well as on specific Information Technology leadership roles such as planning leader, R&D manager, general manager, chief operating strategist. The role of a change leader is positively influenced by the number of years, the extent of strategic responsibility and the organization's revenue while it is negatively influenced by the number of years in the current position. R&D manager can be predicted by strategic responsibility and chief executive's IT use, Manager can be predicted by the extent of strategic responsibility. Although several significant predictors of Information Technology leadership roles were identified, the more signigicant study should continue in the future.

• Korean Journal of Construction Engineering and Management
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• v.12 no.1
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• pp.125-132
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• 2011

Since early 2000s, the importance of CM services has been increasingly recognized and the CM market is continuously growing. As a consequence, the number of CM companies has increased, which means keener market competition. In order to increase their competitiveness, it has been a major task for CM companies to employ and foster competent construction managers who can play a role of efficient project leaders. The objective of the paper is to analyze key characteristics of construction managers' roles during design stages from the perspective of leader's roles including strategic planner, team builder, gatekeeper, expert, champion.

• Journal of Electrical Engineering and Technology
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• v.9 no.1
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• pp.90-97
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• 2014

Nash Cournot Equilibrium (NCE) has been widely used in a competitive electricity market to analyze generation firms' strategic production quantities. Congestion on a transmission network may lead to a mixed strategy NCE. Mixed strategy is complicated to understand, difficult to compute, and hard to implement in practical market. However, Stackelberg model based equilibrium does not have any mixed strategy, even under congestion in a transmission line. A guide to understanding mixed strategy equilibrium is given by analyzing a cycling phenomenon in the players' best choices. This paper connects the concept of leader-follower in Stackelberg model with relations between generation firms on both sides of the congested line. From the viewpoint of social welfare, the surplus analysis is presented for comparison between the NCE and the Stackelberg equilibrium (SE).

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2003.05a
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• pp.804-807
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• 2003

Recently, standardization is essential strategic tool for a firm to preoccupy a market. Also WTO TBT(Technical Barriers to Trade) makes importance of standardization greater in telecommunication industry. Therefore countries, not to speak of firms, recognize standards essential strategy to preoccupy markets. In this paper, we will examine the standardization competition between a leader and a follower and their strategies through dynamic incomplete information game model.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.6 no.2
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• pp.172-177
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• 2005

Under the difficult economy circumstances of Korean universities and industries, Korean government has been strongly emphasizing industry-university collaboration to make percentage of employment among college/university graduates higher as well as prosperity of Korean economy. In order to make effective improvement for universities, industries, local society, and national economic status, it is required to recognize the importance of university-industry collaboration team leader's leadership; which relates various employers personal behaviors with organizational goals and affects the employer's organizational behaviors in university-industry collaboration team. This study aims to suggest the effective strategic leadership behaviors fur the industry-university collaboration team leader in Korean universities as they are to manage university faculty members, professors, and researchers and/or top management of business enterprises and to achieve the organizational goals through literatures concerned about leadership and university-industry collaboration.

• Industrial Engineering and Management Systems
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• v.9 no.2
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• pp.97-106
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• 2010

Can eBay.com's fee structure coordinate the channel? It's a critical strategic problem in e-commerce operations and an interesting research hypothesis as well. eBay's fees include three parts: monthly subscription fee, insertion fee, and final value fee (i.e., a revenue sharing portion), which represent a generic form of revenue sharing fee structure between the retailer and the vendor in a supply chain. This research deals with such a channel consisting of a price-setting vendor who sells products through eBay's marketplace exclusively to the end customers. The up- and down-stream channel relationship is consignment-based revenue sharing. We use a game-theoretic approach with assumption of the retailer (i.e., eBay.com) being a Stackelberg-leader and the vendor being a follower. The Stackelberg-leader decides on the terms of revenue sharing contract (i.e., fee structure), and the follower (vendor) decides on how many units to sell and the items' selling price. This study formulates several profit-maximization models by considering the effects of the retail price on the demand function. Under such settings, we show that eBay's fee structure can improve the channel efficiency; yet it cannot coordinate the channel optimally.

• International Commerce and Information Review
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• v.16 no.2
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• pp.221-249
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• 2014

This study analyzed the sufficient conditions for Korean firm's foreign subsidiaries in order to evolve into a center of excellence for knowledge creation and diffusion. In this respect, the purpose of this study is to develop a new framework based on literatures related to subsidiary knowledge creation and a center of excellence. Specifically, we created seven decisive factors for subsidiary knowledge creation: two general factors, two strategic important factors, and three excellent factors. Each factor can be a necessary condition or sufficient condition according to research purpose. For example, the decentralized organizational structure belonging to general factors become a sufficient factor for facilitating subsidiary's knowledge creation but it become a necessary condition for a center of excellence because all subsidiaries with decentralized organizational structure cannot be strategically important subsidiaries. By using seven decisive factors, this study examines the determinants' validity theoretically and practically.