• The Korean Journal of Financial Management
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• v.17 no.2
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• pp.1-28
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• 2000

본 연구에서는 경영자 소유지분과 자본적 투자지출의 관계를 이론과 실증분석의 양 차원에서 분석하였다. 우선 이론적인 분석에서는 경영자가 기업가치 극대화뿐만 아니라 규모극대화를 동시에 추구할 때, 기업의 자발적 투자지출은 경영자 소유지분의 함수라는 점을 보였다. 특히 2차효용함수의 가정하에서 자본적 투자지출과 경영자 소유지분의 관계는 경영자의 소유지분과 위험회피도, 확실성 등가에 의한 프로젝트의 순기대현금 흐름 수준에 따라 달라지는 것으로 나타났다. 또한 자본적 투자지출은 경영자의 효용함수 행태에 따라 경영자 소유지분이 낮은 수준에서는 소유지분의 감소함수이나 높은 수준에서는 증가함수로 반전되는 구조적인 전환점이 존재한다는 점을 밝혔다. 한편 90-95년 중 우리나라 상장 제조업의 자료를 바탕으로 규모극대화 기업과 규모비극대화 기업에 대하여 경영자 소유지분과 자본적 투자지출의 관계를 비교한 결과, 규모극대화 기업에서 경영자 지분이 약 30%인 구조적인 전환점을 중심으로 그 이전에서는 경영자 지분의 증가에 따라 자본적 투자지출이 감소하나 그 이후에는 증가함수로 단전되는 것으로 나타나 이론의 내용을 지지하였다. 그러므로 본 연구의 결과는 기존의 연구에서와는 달리 안주가설(entrenchment hypothesis)에 의하지 않더라도 경영자의 효용함수의 행태에 따라 일정한 경영자 소유지분 이상에서는 가치비극대화 행위가 지배할 있다는 점을 보여주고 있다.

• Journal of the Korean Society for Precision Engineering
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• v.17 no.9
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• pp.210-221
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• 2000

Plastic mold designers and frequently faced with optimizing multi-quality issues in injection molded parts. These issues are usually in conflict with each other and thus tradeoff needs to be made to reach a final compromised solution. in this study an automated injection molding design methodology has been developed to optimize multi-quality characteristics of injection molded parts. The features of the proposed methodology are as follows : first utility theory is applied to transform the original multi-objective problem into single-objective problem. Second is an implementation of a direct search-based injection molding optimization procedure with automated consideration of robustness against process variation. The modified complex method is used as a general optimization tool in this study. The developed methodology was applied to an actual mold design and the results showed that the methodology was useful through the CAE simulation using a commercial injection molding software package. Applied to production this study will be of immense value to companies in reducing the product development time and enhancing the product quality.

• Convergence Security Journal
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• v.19 no.2
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• pp.47-58
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• 2019

This study applied the Theory of Reasoned Action by Fishbein & Ajzen(1975) as the grounded theory and adopt sanctions of the General Deterrent Theory and protection motivation of the Protection Motivation Theory as the antecedents to discuss the theoretical factors and the cases of application in the field of information security. Then, it adopted subjective norm, a variable of the Theory of Reasoned Action, as a parameter to analyze the causality of sanctions, perceived vulnerability, response cost, and self-efficacy with the intention to follow the information security policies. As a result, all of the antecedents except for sanctions had causality with the intention and subjective norm proved its mediating effect as a parameter between the antecedents and the intention.

• Environmental and Resource Economics Review
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• v.26 no.4
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• pp.499-517
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• 2017

The purpose of this article is to show profit margin hedging can be an optimal strategy in crude oil purchasing. This study theoretically analyzes profit margin hedging strategy is optimal in crude oil purchasing using expected target utility function and conducts simulations to show if the profit margin hedging is profitable. In addition, this study tests existence of mean reversion of crude oil futures prices to confirm the theory that profit margin hedging is more profitable than other strategies, such as always hedging or buying at expiration with spot price, if futures prices are mean reverting. The simulation results show that the expected utility of profit margin hedging higher than other strategies. Although we cannot find any evidence that crude oil futures prices follow mean reverting process, we can conclude that profit margin hedging can be optimal strategy in crude oil purchasing based on theoretical proof and simulation results.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 1993.04a
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• pp.309-309
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• 1993

• Proceedings of the Korea Technology Innovation Society Conference
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• 2002.11a
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• pp.209-224
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• 2002

• Convergence Security Journal
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• v.18 no.1
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• pp.69-84
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• 2018

This study examines antecedents of the intention of compliance with information security policies based on Ajzen's Theory of Planned Behavior. The study conducted the following: Verification of casual relations between role of management and protection motivation and the antecedents of planned behavior as parameters to determine the effect on the intention of compliance with information security policy, and comparative analysis between the research model and a competition model. The result of the study disclosed that, in the research model, attitude and subjective norm took an intermediary role on management beliefs, response efficacy, response cost, self-efficacy, and compliance intention, and perceived behavior control on management beliefs, self-efficacy and compliance intention.

• Transactions of the Korean Society of Mechanical Engineers B
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• v.40 no.7
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• pp.477-484
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• 2016

In a multi-effect solar distiller, a feeding rate of seawater to each effect should be decreased as the effect number is increased. In previous studies, the feed rate of seawater was not reduced evenly between the effects, which is unreasonable, since the thermal energy input of each effect decreases by the same amount. In this work, numerical analysis was carried out in order to elucidate this discrepancy. The results showed that the amount of distillates produced was almost the same for both evenly and unevenly reduced flow rates between the effects. Optimum feed rates of seawater with various energy inputs from exhaust gas heat exchanger were also obtained. The results showed that the optimum feed rate of the first effect increased linearly or reached a steady state depending on the heat flux.

• Journal of the Korean Society of Manufacturing Process Engineers
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• v.11 no.2
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• pp.125-136
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• 2012

Wrinkle and fracture are two major defects frequently found in the sheet metal forming process. In this process there are more than one design attributes to optimize and several uncontrollable factors which cannot be ignored in determining the optimal values of design variables. Therefore, attempts to reduce defects through a traditional optimization technique are often led to failures. In this research, a new design method for reducing the wrinkle and fracture under uncontrollable factors is presented by using decision-making theory. To avoid the psychological difficulties in determining the scaling constants of the multi-attribute utility function by using the ordinary lottery questions, a pair-wise comparison procedure is adapted to avoid this problem. The effectiveness of the proposed method is illustrated through a robust design of sheet metal forming process of a side member of an automotive body.

• Proceedings of the Korean Radioactive Waste Society Conference
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• 2007.05a
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• pp.171-172
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• 2007