• 대한전기학회:학술대회논문집
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• 대한전기학회 1997년도 하계학술대회 논문집 D
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• pp.794-796
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• 1997

The superconducting magnetic energy storage (SMES) system is considered to be useful to charge or release an energy in power system because of the high efficiency and quick response. But we need much capital to construct and to operate a SMES. A site and capacity of SMES are important elements for effective operating and planning. In this paper, we proposed a performance function to determine an optimal site and capacity of SMES according to variety condition of power system such as fault point. In addition, to demonstrate the validity of a proposed method, the simulations were carried out on two-machine 5-bus system.

• 디지털융복합연구
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• 제19권6호
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• pp.199-211
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• 2021

본 연구는 스마트팩토리를 도입한 국내 중소제조기업이 질적 고도화를 위해 현재 대비 상위단계의 스마트팩토리 고도화 수용의도에 영향을 미치는 요인을 분석하고자 한다. 이를 위하여 스마트팩토리를 도입한 중소기업을 대상으로 통합기술수용이론과 확장된 2단계 정보시스템 지속사용모델을 이용하여 온라인 설문조사를 통해 수집된 375부를 SPSS와 AMOS를 활용하여 실증적으로 분석하였다. 연구결과 성과기대, 노력기대, 사회적 영향, 촉진조건은 사용자 만족도에 통계적으로 유의한 영향이 있었으며, 사용자 만족도와 경영자의 의지는 고도화 수용의도에 영향을 미치는 것으로 나타났다. 다만 공급사의 기술력은 고도화 수용의도에 직접적인 영향이 없는 것으로 나타났으며 스마트팩토리 사용자의 만족도는 성과기대, 노력기대, 사회적 영향, 촉진조건과 고도화 수용의도 간에 매개효과를 가지는 것을 확인하였다. 향후 국내 중소제조기업의 스마트팩토리 고도화를 위해서는 사용단계에서의 만족도 향상과 경영자의 스마트화 의지를 지속 향상시키는 노력이 중요하다고 판단된다.

• 한국시뮬레이션학회:학술대회논문집
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• 한국시뮬레이션학회 1998년도 추계학술대회 및 정기총회
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• pp.65-65
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• 1998

Manufacturing systems like a motor production process are analyzed using simulations than numerical analyses and/or heuristic methods due to their stochastic properties. The SME(small and medium enterprise) producing automotive motors that develop CIM systems to improve production performance is focused as an application site. We analyze and understand the system exactly using layout based simulation, and then we will suggest the initial feashible production-plan dependent on the layout to overcome weak-points of the current system(i.e., high WIPs, bottle-neck processes, due-date delays and etc.). And, solutions are suggested to increase performances of SMEs producing automotive motors in this paper. The simulation model built in this study is moedlled and analyzed with fully object-oriented methodology using SiMPLE++TM according to properties of production processes of the automotive motor. And, we will introduce ways to verify the model with developed templates for reusability when new needs will be occurred such as designing a new ship, extension or rearrangement of the system, change of production-plans, receiving urgent orders, and so on.

• 한국IT서비스학회지
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• 제21권1호
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• pp.81-102
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• 2022

Although more than 99% of all Korean companies are small and medium-sized enterprises (SMEs), which accounts for a large part of the national economy, they are having difficulties in securing information protection capabilities due to problems such as budget and manpower. On the other hand, as 97% of cyber incidents are concentrated in SMEs, it is urgent to strengthen the information protection management and response capabilities of SMEs. Although the government is promoting company-wide information security consulting for SMEs, the need for supplementing it's procedures and consulting items is being raised. Based on the results of information security consulting supported by the government in 2020, this study attempted to derive improvement plans by interviewing SME workers, information security consultants, and system operators. Through the research results, it is expected to create a basis for SMEs to autonomously check the information security management system and contribute to the reference of related policies.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2011년도 정기총회 및 추계학술대회 논문집
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• pp.2235-2240
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• 2011

Recently, government agencies such as MKE Ministry of the small and midsize businesses and technology development requirements, technical difficulties to solve the Institute of Cast cooperation by establishing a network hub system Institute of Cast diffusion and commercialization of the R & D and are encouraged to promote. SME supporting with the experting technologies required to small and medium-sized businesses through "A comprehensive support program production site" of ISTK(Korea Research council Industrial Science & Technology) having been performed from 2010 to 2012, a pilot project in 2009. In this paper, customized technology services program in the past two years run will be discussed with the performance and improvement. Comprehensive support program that ends the production site in 2012 onwards the needs of maintenance difficulties of the railroad companies to build a support system and its ongoing research about the future plans to do.

• 산업경영시스템학회지
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• 제28권2호
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• pp.27-35
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• 2005

This paper investigates the importance and satisfaction levels according to factors on commercial Enterprise Resource Planning(ERP) packages in the view of end users when the ERP system is employed especially in SMEs. Considering the characteristics and functions of ERP packages, five factors (vendor, technology, function, A/S, price) are obtained based on the literature review. The proposed procedure consists of finding importance factors and satisfaction levels which support the selection of ERP packages for a certain SME. When a company tries to implement the ERP system, the findings in this paper suggest which ERP package is suitable for its own business environment.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1998년도 하계학술대회 논문집 C
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• pp.1153-1155
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• 1998

Super-conducting Magnetic Energy Storage(SMES) system is considered to be useful unit to power system stabilizer because of high efficiency and quick response. For effective operating of SMES, we need much studies on accurate modeling and interface characteristics of SMES. In this paper, we propose useful method to SMES, modeling using Artificial Neural Network. Interface technique of proposed model and criterion of stabilization effect is presented. In addition, to demonstrate the validity of proposed method. the simulations were carried out on 3-machine 9-bus system.

• 대한전기학회논문지:전력기술부문A
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• 제48권4호
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• pp.379-387
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• 1999

In general, solving or analyzing nonilinear dynamical equations is very difficult and requires special techniques. To avoid these difficulties, systems are generally linearized in an attempt to predict their begavior. These linearized equations, however, may not predict true system behavior. Therefore, the nonlinear dynamical analysis using bifurcation theory may become a fundamental framework in understanding nonlinear situation in power systems. In this paper, we propose a systematic procedure based on a bifurcation theory to analyze nonlinear behaviors in power systems. We show usefulness of our procedure by applying 3-bus model system. In addition, we consider nonlinear model of SMES and verify the effect of SMES in power system's nonlinear behaviors.

• 한국CDE학회논문집
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• 제13권6호
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• pp.459-468
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• 2008

A web-based Computer-Aided Engineering (CAE) supporting system is connected with a Product Data Management (PDM) system for Small and Medium Enterprises (SMEs) suffering from the lack of building hardware, software and related experts. An analysis of current business models and worksite requirements provides an improved process model and data to be shared between the PDM system and the CAE supporting system. Since all engineering tasks such as geometric modeling, mesh generation, static stress and modal analysis, and fatigue durability analysis are automated in the CAE supporting system, the user in charge of the CAE have only to configure the concerned values of design variables and result data through the web page. The existing Change Management module of the PDM system is modified for seamless data exchange, i.e. sending the Engineering Change Order (ECO) data to the CAE supporting system and receiving the CAE result data bark. The hi-directional data transfers between the PDM system and the CAE supporting system is made possible by adaptors bused on the Simple Object Access Protocol (SOAP). The current approach will be very helpful for SMEs that only have the PDM system and have no adequate infrastructure for CAE.

• 통상정보연구
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• 제18권4호
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• pp.311-332
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• 2016

본 연구는 KS인증업체를 중심으로 KS인증시스템이 중소기업 수출성과에 미치는 영향 요인을 분석하여 국제환경에 중소기업의 수출경쟁력을 강화하는데 시사점을 제시하고자 연구를 수행하였다. 이를 검증하기 위하여 환경특성요인과 기업특성요인에 대한 선행연구를 통해 이 요인들이 KS인증시스템 표준화 요인에 영향을 미치는 것을 규명하고 KS인증시스템 표준화 요인이 수출성과에 영향을 미치는 요인을 분석하였다. 분석을 위해 SPSS 21.0을 사용하여 빈도분석, 타당성분석, 신뢰성분석, 다중회귀분석을 실시하였다. 분석결과 기업특성요인의 경영자마인드, 종업원표준인식, KS인증교육이 KS인증시스템 표준화 요인에 영향을 미치는 것으로 나타났다. 그리고 KS인증시스템 표준화 요인이 수출성과에 영향을 미치는 것으로 나타났다. 실증분석한 결과에 따라 중소기업에 다음과 같은 시사점을 제시할 수 있다. 첫째, 수출성과를 강화하기 위해서는 중소기업 최고경영자는 KS인증시스템에 대한 사내표준화 마인드를 고양시키는 지원이 요구된다. 둘째, 중소기업 종업원에 대한 표준화 인식이 높아질 수 있는 KS 인증 교육이 필요하다. 셋째, 제품품질 향상을 위해 ISO 인증, FTA관련 업무 사내 표준화 시스템 활용이 필요하다.