• Industrial Engineering and Management Systems
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• 제7권2호
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• pp.182-188
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• 2008

Automated parking systems, which automatically park and retrieve vehicles, have been steadily replacing conventional parking systems. The spiral parking system is a type of automated parking systems that has cylindrical parking tower. We develop an economic design model of spiral parking system based on a recursive optimization and simulation procedure in which the dynamic nature of the parking system can be integrated into the mathematical programming model. The optimal values of design parameters are found that gives the minimum total cost while complying with the desired performance of the system.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2015년도 제46회 하계학술대회
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• pp.233-234
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• 2015

에너지 관리시스템(Energy Management System)을 통해 전력계통을 안정적이고 효율적으로 운영하게 되고 이때 취득데이터의 오류나 통신 불량으로 인한 취득 불가 상태가 발행 하는 것은 상태추정이 추정한 값을 통해 보정할 수 있지만 차단기 상태나, 임피던스의 입력오류 등의 토폴로지에 영향을 주는 부분과 데이터를 상태추정으로 보정한다고 하여도 기본 데이터의 Good상태 유지는 필요하여 논문의 취득 데이터 체크 방안을 제시한다.

• 산업경영시스템학회지
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• 제30권3호
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• pp.117-126
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• 2007

It has been a major issue to repair the broken system quickly for improvement of productivity and utilization. Generally, high utilization of system requires the high amount of spare parts in inventory and inventory cost. Therefore, it is necessary to determine the proper amount of inventory with regard to utilization of system. This study designs a methodology for determining the proper amount of inventory level in a two-echelon spare parts distribution system. The requirements are to satisfy proper customer demands at a distribution center and to maintain over the utilization of the whole system at customers. This methodology minimizes total inventory investment at a distribution center and customers.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1999년도 추계학술대회 논문집 학회본부 A
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• pp.175-177
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• 1999

This paper presents a prototype of visualization MMI of the Power System Phenomenon, specially synchronous machine dynamics and frequency deviations of power system for KEPCO's Enhanced Power System Simulator(KEPS)[1]. And some visualization designs of the Power System Phenomenons such as voltage stability, transient stability, SSR, Line overflow, and voltage deviations are presented. The prototype MMI has included the animations & 3D graphics presentations for synchronous machine rotor deviations and frequency deviations. So, a user can intuitively acquire the basic concepts of the power system oscillations. Finally, it will be scheduled to development of the various visualization MMI of the power system phenomenons for development and installation of KEPS.

• 대한산업공학회지
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• 제37권4호
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• pp.382-389
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• 2011

Salesperson Monitoring System (SMS) is geographic based information system that supports business auditing, sales area coordinating and customer management for each salesperson. Conventional SMSs focus mainly on the monitoring or logging functions, i.e., a salesperson locating or moving trail tracking. However, the schedules have been planned by human planner, and they have rarely been managed with a software system like SMS. In this paper, a mixed integer programming model for a salesperson routing schedule is provided. Then, 2-phase Genetic Algorithm (GA) is proposed to make salesperson routing schedule. Experimental results show a validity of the proposed method.

• 전력전자학회:학술대회논문집
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• 전력전자학회 2018년도 전력전자학술대회
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• pp.424-425
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• 2018

In the introduction, this paper introduces LS Industrial Systems' medium-voltage drive installed at Hyundai Green Power, an 800MW gas power plant. In the body, it explains the synchronous transfer technology and new speed search technology applied to Forced Draft(FD) Fan and Boiler Feed-water(BF) Pump, which are power generation facilities. Lastly, it shows the annual energy saving amount and operation status which are applied to each facility and proves that it is a successful application case.

• 수산해양교육연구
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• 제4권2호
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• pp.121-128
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• 1992

Taking the present circumstances into account that we are approaching the realization stage of interchange and cooperation between North and South Korea through a preparatory stage, recovery of national homogeneity is an essential precondition for reunification. The important first Step is pursuing of recovery of educational homogeneity for this purpose. The authors carried out 8 general observation on the fundamental educational system with ideology, on the actual state and characteristic of educational system for industrial technicians, and especially on the educational system for fisheries technical manpower in the North Korea. It was found that the North Korea's basic idea of educational policy is constituted by bringing up the communistic human beings on the ground of "the Ideas of Identity" and by bringing up industrial technical manpower for development of communistic economic. The basic educational system consists of 1-4-6-4 school years system, and 11 years of compulsory education up to the higher middle schools is imposed to all people. The educational system for industrial technicians is also composed of the regular school system which is following the basic educational system and of the irregular school system which is being attached to the industrial bodies. The fisheries educational system is very similar to the general educational system for industrial technicians, and the fisheries workers are treated more warmly in comparison with the workers engaging in the other industrial fields. By this study, the authors failed to find out the concrete content of the fisheries educational system including the curriculum owing to the lack of information, but this task should be studied continuously to make provision of reunification in the near future. Expressly, a continuous and profound research is required to be carried out on actual accepted state of the international maritime conventions together with the marine officers' certification system for the shipping and fisheries fields in the North Korea.

• 한국군사과학기술학회지
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• 제19권1호
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• pp.105-118
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• 2016

A naval combat system is the system of systems who supports naval indigenous operations by integrating and inter-operating many different kind of weapons, which has characteristics of large scale complex computing system. ROK Navy has been built a blue ocean navy, so that large scale warships are under constructions. However, warship combat system architecture has not been well studied so far in Korea. The paper focuses on current combat system architecture and propose the next generation combat system architecture, which will give the development direction of ROK Navy. In order to complete combat system architecture studies, the system engineering process shall be applied to the study. Moreover, ARENA simulation tool is used for verification of combat system architecture. The system engineering process is as follows: next-generation naval combat system requirement analysis, functional architecture analysis and physical architecture analysis.

• 산업경영시스템학회지
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• 제14권24호
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• pp.83-95
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• 1991

This paper investigate into practice industrial safety consciousness and requirement for the spot workers in engaged the metal industry. Industrial accident defines "unwanted event" happened unexpectedly in opposition to hope workers and industrial accident is being possible to prevent. The purpose of this paper is to present a basic data for preventing and deceasing industrial accident from the spot works system by means of the improvement of worker's own safety consciousness and analyzing the spot worker's requirement in industrial safety.al safety.

• 한국산업정보학회논문지
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• 제14권1호
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• pp.90-94
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• 2009

본 연구에서는 산업현장에서 직접적으로 활용할 수 있는 시스템에 중심을 둔다. 따라서 본 논문은 산업 실내 환경에 적합한 무선 기반의 원격 측정 시스템 설계에 관한 기초 연구로서 비교적 간단한 실내 온도 측정 시스템을 설계하고 제작하였다. 또한 실내 환경에서의 응용 가능성을 검토하기 위해 측정거리에 따른 특성 분석과 안테나 변경에 따른 성능 차이에 대해 논한다.