• Journal of Navigation and Port Research
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• v.38 no.1
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• pp.1-9
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• 2014

As the ratio of women's socioeconomic participation expanded, this phenomenon appeared maritime industry. The advent of female seafarers will be the solution for the shortage of seafarer as well as for women's employment instability all over the world. This paper analyzed the state of present female maritime officers and suggested the activation strategy which preliminary female officers advised by AHP and STOW analysis. This paper finds to strengthen their superior aspects like professional knowledge, practical ability, job performance, improve the education system by gender, strengthen the career path and transform the policy for them by sensitively external changes by government and education institutions.

• Proceedings of the KOR-KST Conference
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• 1996.06a
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• pp.131-137
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• 1996

This paper discusses the necessity, strategy and objectives of the rail transportation recently developed in Shanghai. The objective should not be regarded just as a term project, but should be taken as an urgent mission with the 21st century, Shanghai should possess a network of about 100km of rail transport lines. To this end, the following measures are suggested : grade separation of all lines on elevated structures ; developing the rail car industries ; full utilization of all available transportation facilities ; optimizing the use of the space resources of highways ; bringing into play the initiatives of all parties concerned. Recently, it has become a popular consensus that the development of high-speed, safe, punctual, comfortable, non-pollution rail transport with large capacity is the best and only solution to Shanghai urban transportation. In this respect, this dissertation deals with the development strategy for current Shanghai rail construction, together with the infractructure in Shanghai, positioning the developing target; meanwhile, some proposals and solutions to hit this target will be put forward for the reference of leaders and experts.

• Proceedings of the KSME Conference
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• 2007.05a
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• pp.1328-1333
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• 2007

Unpredictable customer demands make manufacturers to make quality products with cheaper price and shorter delivery. To survive in the global market, the manufacturing industry needs to equip with advanced technologies including IT. Under this situation, "collaboration"is the best solution for manufacturers to survive and to grow their company instead of competition. With this strategy, we have conducted a project(e-Manufacturing). The companies participate to the project attained the amazing results by utilizing collaboration systems such as delivery shortened and increase in sale/profit. Since the strategy of the project is assessed to be very useful to increase competition power of manufacturers, the project will be enlarged to cover wider application domains with a new project name called "i-Manufacturing". In this paper, therefore, we introduce the specific output from the e-Manufacturing project and the specific strategies/plans of i-Manufacturing project.

• The Transactions of the Korean Institute of Electrical Engineers A
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• v.52 no.6
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• pp.347-353
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• 2003

In models of imperfect competition of deregulated electricity markets, the key task is to find the Nash equilibrium(NE). The approaches for finding the NE have had two major bottlenecks: computation of mixed strategy equilibrium and treatment of multi-player games. This paper proposes a payoff matrix approach that resolves these bottlenecks. The proposed method can efficiently find a mixed strategy equilibrium in a multi-player game. The formulation of the m condition for a three-player game is introduced and a basic computation scheme of solving nonlinear equalities and checking inequalities is proposed. In order to relieve the inevitable burden of searching the subspace of payoffs, several techniques are adopted in this paper. Two example application problems arising from electricity markets and involving a Cournot and a Bertrand model, respectively, are investigated for verifying the proposed method.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2010.06a
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• pp.127-127
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• 2010

This study describes the optimal design of shield to improve the insulation performance of vacuum interrupter(VI). Axi-symmetric finite element routine including floating boundary condition for shields was applied to analyze electric potential and field distribution in VI. A ($\mu-\lambda$) Evolution Strategy(ES) is employed as optimization method. Three design variables of shield are selected for minimizing the maximum electric field strength in VI. Finally, optimal solution for shield is obtained and compared with the result of the prototype.

• ICROS
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• v.1 no.1
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• pp.16-16
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• 1995

Like the usual systems, the industrial robot manipulator has some constraints for motion. Usually we hope that the manipulators move fast to accomplish the given task. The problem can be formulated as the time-optimal control problem under the constraints such as the limits of velocity, acceleration and jerk. But it is very difficult to obtain the exact solution of the time-optimal control problem. This paper solves this problem in two steps. In the first step, we find the minimum time trajectories by optimizing cubic polynomial joint trajectories under the physical constraints using the modified evolution strategy. In the second step, the controller is optimized for robot manipulator to track precisely the optimized trajectory found in the previous step. Experimental results for SCARA type manipulator show that the proposed method is very useful.

• Transactions on Control, Automation and Systems Engineering
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• v.1 no.1
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• pp.16-20
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• 1999

Like the usual systems, the industrial robot manipulator has some constraints for motion. Usually we hope that the manipulators move fast to accomplish the given task. The problem can be formulated as the time-optimal control problem under the constraints such as the limits of velocity, acceleration and jerk. But it is very difficult to obtain the exact solution of the time-optimal control problem. This paper solves this problem in two steps. In the first step, we find the minimum time trajectories by optimizing cubic polynomial joint trajectories under the physical constraints using the modified evolution strategy. In the second step, the controller is optimized for robot manipulator to track precisely the optimized trajectory found in the previous step. Experimental results for SCARA type manipulator show that the proposed method is very useful.

• Journal of Industrial Technology
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• v.30 no.B
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• pp.11-16
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• 2010

To provide a development strategy on the method which assesses a potential risk of nationwide emerging IT infrastructure in planning and design phase, and to classify the assessment result into 5 levels is the goal of this research. The development strategy provided in this paper could improve a benefit-cost-ratio of investments on emerging IT infrastructure. With a premature assessment of the potential risks of a nationwide emerging IT infrastructure which needs astronomical amount of public funds, it could show a way of systematic investments on security systems and improve a benefit-cost-ratio of investments on emerging IT infrastructure. Also, this approach might improve the safety of nationwide IT infrastructure. It could identify and provide an optimized solution for the potential risks of nationwide IT infrastructure.

• 한국IT서비스학회:학술대회논문집
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• 2002.06a
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• pp.238-243
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• 2002

With the advancement of information technology and the proliferation of e-Business, CRM has been emerging as a powerful concept or strategy for dealing with customer relationship, though not a new concept. Most CRM applications have been focused on business situation where there are direct channels with customers, as in retailing and banking industry, etc. In this paper, we analyze the case of a manufacturing company where the primary concern lies on indirect channels management, such as selling agencies and distributors. Some issues related to the characteristics of the manufacturing company and the interface with ERP and SCM need to be investigated. Based on the consultation project with L company, we propose a successful CRM implementation strategy and point out some issues in implementing the CRM for a manufacturing company.

• Journal of the Korean Operations Research and Management Science Society
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• v.17 no.2
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• pp.145-162
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• 1992

This paper proposes two design principles for expert systems to solve a stock market timing (SMART) problems : machine knowledge and fuzzy post-adjustment, Machine knowledge is derived from past SMART instances by using an inductive learning algorithm. A knowledge-based solution, which can be regarded as a prior SMART strategy, is then obtained on the basis of the machine knowledge. Fuzzy post-adjustment (FPA) refers to a Bayesian-like reasoning, allowing the prior SMART strategy to be revised by the fuzzy evaluation of environmental factors that might effect the SMART strategy. A prototype system, named K-SISS2 (Knowledge-based Stock Investment Support System 2), was implemented using the two design principles and tested for solving the SMART problem that is aimed at choosing the best time to buy or sell stocks. The prototype system worked very well in an actual stock investment situation, illustrating basic ideas and techniques underlying the suggested design principles.