Browsing by Author "Kang, Jin-Su"

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Analysis of Russia\'s biofuel knowledge base: A comparison with Germany and China
(2015-10-01)
Kang, Jin-Su
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Kholod, Tetyana
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Downing, Stephen
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經營管理研究所
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Institute of Business and Management
This study assesses the evolutionary trajectory of the knowledge base of Russian biofuel technology compared to that of Germany, one of the successful leaders in adopting renewable energy, and China, an aggressive latecomer at promoting renewable energy. A total of 1797 patents filed in Russia, 8282 in Germany and 20,549 in China were retrieved from the European Patent Office database through 2012. We identify four collectively representative measures of a knowledge base (size, growth, cumulativeness, and interdependence), which are observable from biofuel patent citations. Furthermore, we define the exploratory-exploitative index, which enables us to identify the nature of learning embedded in the knowledge base structure. Our citation network analysis of the biofiiel knowledge base trajectory by country, in conjunction with policy milestones, shows that Russia\'s biofuel knowledge base lacks both the increasing technological specialization of that in Germany and the accelerated growth rate of that in China. The German biofuel citation network shows a well-established knowledge base with increasing connectivity, while China\'s has grown exceptionally fast but with a sparseness of citations reflecting limited connections to preceding, foundational technologies. We conclude by addressing policy implications as well as limitations of the study and potential topics to explore in future research. (C) 2015 Elsevier Ltd. All rights reserved.
Closed-form formulas for the Zhang-Zhang polynomials of benzenoid structures: Prolate rectangles and their generalizations
(2016-01-10)
Chou, Chien-Pin
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Kang, Jin-Su
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Witek, Henryk A.
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應用化學系
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應用化學系分子科學碩博班
We show that the Zhang-Zhang (ZZ) polynomial of a benzenoid obtained by fusing a parallelogram M(m, n) with an arbitrary benzenoid structure ABC can be simply computed as a product of the ZZ polynomials of both fragments. It seems possible to extend this important result also to cases where both fused structures are arbitrary Kekulean benzenoids. Formal proofs of explicit forms of the ZZ polynomials for prolate rectangles Pr(m, n) and generalized prolate rectangles Pr ([m(1), m(2), ..., m(n)], n) follow as a straightforward application of the general theory, giving ZZ (Pr (m, n), x) = (1 + (1 x) . m)(n) and ZZ(Pr([m(1), m(2), ..., m(n)), n), x) = Pi(n)(k=1)(1 + (1 + x) . m(k)). (C) 2015 Elsevier B.V. All rights reserved.
Comparative economic analysis of supporting policies for residential solar PV in the United States: Solar Renewable Energy Credit (SREC) potential
(2012-05-01)
Burns, John Edward
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Kang, Jin-Su
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經營管理研究所
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Institute of Business and Management
Numerous studies and market reports suggest that the solar photovoltaic markets rely heavily, if not entirely, upon governmental support policies at present. Unlike in other countries where these policies are enacted at a national level, the 50 states in the US pursue different policies in an attempt to foster the growth of renewable energy, and specifically solar photovoltaics. This paper provides an economic and financial analysis of the US federal and state level policies in states with solar-targeted policies that have Solar Renewable Energy Credits (SREC) markets. After putting a value on SRECs, this study further compares solar carve-outs with other incentives including the federal tax credit, net metering, and state personal tax credits. Our findings show that SREC markets can certainly be strong, with New jersey, Delaware, and Massachusetts having the most potential. Despite their strong potential as effective renewable policies, the lack of a guaranteed minimum and the uncertainty attached are major drawbacks of SREC markets. However, the leveraging of this high value offers hope that the policies will indeed stimulate residential solar photovoltaic markets. (C) 2012 Elsevier Ltd. All rights reserved.
Corporate social responsibility and sustainability balanced scorecard: The case study of family-owned hotels
(2015-07-01)
Kang, Jin-Su
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Chiang, Chun-Fang
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Huangthanapan, Kitipop
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Downing, Stephen
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管理學院
This research aims to find empirical support for the benefits of Corporate Social Responsibility (CSR) to family-owned hotels by identifying paths through which CSR influences business. The Sustainability Balanced Scorecard (SBSC) concept is used to assess the perceived importance of relationships between CSR and business performances to support the goals of the case hotels. SBSC breaks the business down into five dimensions namely; Financial, Customer, Internal Business, Learning & Growth and Non-Market Perspective, which is CSR in this study. The results of partial least squares (PLS) regression using the sample consisting of three stakeholders (i.e., two hundred customers, seventy employees and thirty managers) of family-owned hotels delivered several findings: (i) both the employee and manager group shows that CSR has a significant influence on BSC dimensions with variance (ii) all of the stakeholder groups support the significant relationship between CSR and goals and (iii) all of the stakeholder groups confirm the causal relationship among BSC dimensions with variance. Lastly, we conclude the paper by discussing implications for family-owned hotels as well as addressing limitations. (C) 2015 Elsevier Ltd. All rights reserved.
Culture and the importance of usability attributes
(2013-01-01)
Wallace, Steve
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Reid, Adrian
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Clinciu, Daniel
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Kang, Jin-Su
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經營管理研究所
Purpose - This study into cultural usability aims to identify whether the importance of usability attributes varied between nationalities, and whether this variance was related to cultural dimensions. Design/methodology/approach - A total of 144 subjects from four countries were surveyed on the importance they placed on the usability attributes of cell phones. Results were compared by country, and relationships with cultural dimensions were investigated. Findings - For each country, usability attributes were not rated equally. Across countries, no difference in the rating of effectiveness was found, while ratings of efficiency and satisfaction varied significantly. In addition, the study identified significant relationships between the importance given to efficiency and satisfaction and cultural dimensions identified by Hofstede and the World Values Survey, with values relating to task-orientation influencing efficiency, and non-task oriented values affecting the. importance users place on satisfaction. Practical implications - Product designers and usability practitioners need to consider these cultural differences when designing products and when evaluating, measuring, and making recommendations on product usability Originality/value - Previous studies in this area have shown the existence of differences in preference for usability attributes based on nationality No studies known to the authors have connected this to cultural dimensions. Understanding of this connection supports usability practitioners in their work not just in specific countries but also in cultural regions. It also allows the more precise modeling by researchers of culture's interaction with usability.
Determinants of profiting from innovation activities: Comparisons between technological leaders and latecomers
(2017-03-01)
Hu, Mei-Chih
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Kang, Jin-Su
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Wu, Ching-Yan
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經營管理研究所
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Institute of Business and Management
While the remarkable economic growth of the East Asian latecomers reflects the success of technological catching-up strategies, few researchers have explored the extent to which the profits of innovation have been created and managed in their social contexts and how those profits are secured differently from that of technological leaders. This pioneer study offers empirical evidence and insights by exploring how different rents (value) were secured within the existing global technological regime by technological leaders and by latecomers over the period 1990 to 2009. Our results demonstrate that technological regimes, including technological congruence and social capabilities, affect technological leaders and latecomers in different ways resulting in a relationship where the two play complementary roles. The accumulation and utilization of social capabilities are essential for developing state-of-the-art technologies and securing profit from innovations in the global market. The insights and implications for both technological leaders and latecomers are discussed and elaborated. (C) 2016 Elsevier Inc. All rights reserved.
Keystone effect on entry into two-sided markets: An analysis of the market entry of WiMAX
(2015-05-01)
Kang, Jin-Su
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Downing, Stephen
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經營管理研究所
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Institute of Business and Management
We investigate a market entry scenario where a technologically-superior new platform may overcome its installed base disadvantage with the backing of a strong keystone species advantage within the business ecosystem, called keystone effect in this study, over an incumbent in a market that exhibits indirect network effects. The strength of the keystone species impacts the availability of complementary goods, which is a key factor for a platform to increase its installed base. This study proposes a dynamic economic model to map a market landscape that shows the internal condition (entrant\'s keystone effect) and external conditions (incumbent\'s keystone effect and indirect network effects) under which a new platform can successfully enter (i.e., maintain oligopoly or monopoly share) or fail to enter a two-sided market in a winner-take-all scenario. We then illustrate the model\'s applicability by examining the entry of Worldwide Interoperability for Microwave Access (WiMAX) into the global mobile telecommunications market, employing recent market data from 2009 to 2012 as well as forecast scenario data from 2010 to 2014. In both the historical data and hypothetical forecast scenario we find that WiMAX\'s keystone effect disadvantage and the market\'s indirect network effects were cumulatively strong enough to prevent the new technology standard from successfully competing with the incumbent (cellular 3G and Long Term Evolution) for oligopoly or monopoly share in the long run. (C) 2014 Elsevier Inc. All rights reserved.
Robust economic optimization and environmental policy analysis for microgrid planning: An application to Taichung Industrial Park, Taiwan
(2016-10-15)
Yu, Nan
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Kang, Jin-Su
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Chang, Chung-Chuan
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Lee, Tai-Yong
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Lee, Dong-Yup
This study aims to provide economical and environmentally friendly solutions for a microgrid system with distributed energy resources in the design stage, considering multiple uncertainties during operation and conflicting interests among diverse microgrid stakeholders. For the purpose, we develop a multi-objective optimization model for robust microgrid planning, on the basis of an economic robustness measure, i.e. the worst-case cost among possible scenarios, to reduce the variability among scenario costs caused by uncertainties. The efficacy of the model is successfully demonstrated by applying it to Taichung Industrial Park in Taiwan, an industrial complex, where significant amount of greenhouse gases are emitted. Our findings show that the most robust solution, but the highest cost, mainly includes 45% (26.8 MW) of gas engine and 47% (28 MW) of photovoltaic panel with the highest system capacity (59 MW). Further analyses reveal the environmental benefits from the significant reduction of the expected annual CO2 emission and carbon tax by about half of the current utility facilities in the region. In conclusion, the developed model provides an efficient decision-making tool for robust microgrid planning at the preliminary stage. (C) 2016 Elsevier Ltd. All rights reserved.
Robust optimization for engineering design
(2012)
Kang, Jin-Su
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Lee, Tai-Yong
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Lee, Dong-Yup
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經營管理研究所
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Institute of Business and Management
This study proposes a robust optimization model to handle uncertainty during the process design stage, together with a decision-making procedure. Different robustness concepts are presented to describe the characteristic, either economic or technical, of a given variable in the model. Among economic robustness measures, partial mean of costs is analysed to address its intrinsic problem of excessive variability of performance with respect to the change of values in its parameters. To resolve it, a novel formulation of robust economic optimization is derived, providing a conceptual framework for suggesting a proper range of parameter values. Then, the model is further extended to consider technical robustness as well. Lastly, the decision-making procedure is presented using the proposed nadir vector which is computationally inexpensive and also useful in selecting a final solution. The applicability of the model was successfully demonstrated by applying it to process design examples.
Robust Optimization of Microgrids - An Application to Taichung Industrial Park
(2012)
Kang, Jin-Su
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Chang, Chung-Chuan
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Lee, Dong-Yup
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Lee, Tai-yong
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經營管理研究所
Despite a number of studies of a microgrid, robust optimization of a microgrid has not been studied yet. This is critical to a microgrid because it has lots of uncertainties concerning main grid failure, power quality issues, estimates of demand, energy price, regulation change, etc. It is therefore of importance to study and develop robust optimization strategies that take the uncertainty into account at planning a microgrid. The current study aims at developing a robust optimization model for a microgrid which provides set of robust solutions and decision-making procedure for a best solution. The model enables us to consider various uncertainties including energy price, regulation change, and estimates of demand using scenario based approach. The proposed model is validated with Taichung Industrial Park in Taiwan.
Using DEMATEL method to explore the core competences and causal effect of the IC design service company: An empirical case study
(2011-05-01)
Lin, Ya-Ti
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Yang, Yeou-Herng
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Kang, Jin-Su
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Yu, Hsiao-Cheng
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經營管理研究所
The booming of Integrated Circuit (IC) design service has become a critical sub-industry to the evolution of semiconductor industry. In this paper, we took the case of a tier one IC design service company to explore the core competences of this emerging industry. Seven core competences are defined throughout the research. More specifically, this paper analyzes the in-depth of the interrelation among the core competences by utilizing the DEMATEL method. They are divided into causal and effect groups, enabling readers to gain a better understanding of the interactive relationship between them, as well as making suggestions for improvement to enhance their overall performance. The result has shown that the Intellectual Property (IP) design capability is the most important core competence. Enhancing five of the core competences in the causal group will improve the overall performance. Further, DEMATEL method is demonstrated as a useful approach in exploring the interrelationship. (c) 2010 Elsevier Ltd. All rights reserved.
WHAT YOU DON'T SEE CAN HURT YOU: AWARENESS CUES TO PROFILE INDIRECT COMPETITORS
(2019-12-01)
Downing, Stephen T.
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Kang, Jin-Su
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Markman, Gideon D.
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交大名義發表
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National Chiao Tung University
The awareness-motivation-capability (AMC) framework instructs firms to be aware of rivals, yet it offers limited guidance on how to profile those who are not yet rivals but stand to become so. Because rivals are embedded in dyads, triads, tetrads, etc., amultilevel view can unearth awareness cues that specify a hostility profile and make the awareness construct prescient. Studying thousands of competitive encounters over 10 years, we show that, at the firm and dyad levels, diversification and asymmetric pressure (differential exposure to competitive pressure) are reliable cues predicting competitive encounters. At the network level, convergence drives triadic encounters (competition with a rival's rival), and the degree of separation among indirect competitors defines the outer bounds of the hostility profile. Specifically, direct rivals and second- and third-degree indirect competitors merit awareness-more distal players do not. Together, the awareness cues and hostility profile delineate the conceptual bound within which awareness is prescient and beyond which it is misplaced. Challenging several assumptions, our study shows that an arena view assists in predicting cross-industry competition; applying firm, dyad, and network levels of analysis is advisable to better foresee competition; and indirect competitors are "profilable," allowing us to "see" rivals even before they strike.