• Journal of Information Technology Services
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• v.10 no.2
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• pp.61-74
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• 2011

SMEs(Small and Medium-sized Enterprises) have implemented the various IT-based Production Information Systems(PIS) to cope with the highly competitive environment as well as to improve their competitiveness and productivity. For the efficient development of PIS In SMEs, standardizing the system development process is required. Methodology for the development of PIS is especially important for the systematic and efficient implementation to communicate among the SI companies, SMEs, and a supervision agency. TIPA(Korea Technology and Information Promotion Agency for SMEs) has developed PSDM(Production System Development Methodology), and supplies it to the SI companies. The research goal of this paper is to explore the productivity improvement by adopting the PSDM with the cases of SI companies applied PSDM. The results show that such benefits as risk management, productivity improvement, easy system implementation and maintenance are perceived by PSDM Users. This research could be the first case study reveal the effectiveness of PSDM. For further research, the survey could be carried out with more samples.

• 한국IT서비스학회:학술대회논문집
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• 2003.11a
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• pp.427-432
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• 2003

효과적인 중소기업 생산정보화를 위하여 시스템 개발 과정을 표준화하고 단계별 주요 활동에 관한 연구, 프로젝트 범위 일정 비용 인적자원 관리를 위한 WBS 작성, 시스템의 신뢰성 품질 생산성 향상을 위한 관리 항목 설정, 중소기업 IT업체 감리업체 등 참여기업간의 의사소통, 그리고 구축된 생산정보화의 유지보수를 포함한 운영지원 등 보다 체계적이고 효율적인 시스템 구축을 위해 중소기업 생산정보화에 적합한 시스템 개발 방법론(PSDM : Production System Development Methodology)에 관하여 연구 개발한다. 이 PSDM의 연구로 생산정보화를 구축하고자 참여하는 많은 중소기업 및 IT업체들이 표준화된 방법론을 이용하여 시스템 구축을 보다 효과적으로 수행할 수 있으며, 보다 높은 신뢰성을 가진 시스템을 구축할 수 있다.

• Advances in Computational Design
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• v.1 no.4
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• pp.297-313
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• 2016

The flexural strength of circular concrete-filled tubes (CCFT) can be estimated by several codes such as ACI, AISC, and Eurocode 4. In AISC and Eurocode, two methods are recommended, which are the strain compatibility method (SCM) and the plastic stress distribution method (PSDM). The SCM of AISC is almost the same as the SCM of the ACI method, while the SCM of Eurocode is similar to the ACI method. Only the assumption of the compressive stress of concrete is different. The PSDM of Eurocode approach is also similar to the PSDM of AISC, but they have different definitions of material strength. The PSDM of AISC is relatively easier to use, because AISC provides closed-form equations for calculating the flexural strength. However, due to the complexity of calculation of circular shapes, it is quite difficult to determine the flexural strength of CCFT following other methods. Furthermore, all these methods give different estimations. In this study, an effort is made to review and compare the codes to identify their differences. The study also develops a computing program for the flexural strength of circular concrete filled tubes under pure bending that is in accordance with the codes. Finally, the developed computing algorithm, which is programmed in MATLAB, is used to generate design aid graphs for various steel grades and a variety of strengths of steel and concrete. These design aid graphs for CCFT beams can be used as a preliminary design tool.

• Proceedings of the Korea Database Society Conference
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• 2010.06a
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• pp.21-31
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• 2010

중소기업은 변화하는 경쟁 환경에 능동적으로 대처하고 경쟁력확보와 생산성 향상을 위하여 IT를 기반으로 하는 다양한 생산정보시스템을 도입, 운영하고 있다. 이에 따라 효율적인 중소기업 생산정보화를 위하여 시스템 개발 과정을 정형화하는 생산정보시스템의 표준화가 요구된다. 특히 중소기업, IT업체, 감리업체 등 참여 기업 간의 의사소통, 그리고 구축된 생산정보화의 유지보수를 포함한 운영지원 등의 체계적이고 효율적인 운영을 위해서는 생산정보시스템의 개발 방법론 (PDSM)이 필요하다. 이에 따라 중소기업기술정보화진흥원에서 생산정보화시스템개발방법론(PSDM)을 개발하여 보급하고 있다. 본 연구에서는 정부가 지원하는 중소기업 생산정보화지원사업에 참여한 기업을 대상으로 생산정보화시스템개발방법론(PDSM)을 적용한 IT 업체의 적용사례를 통해 방법론의 활용에 따른 생산성 향상 및 작용 시 고려사항에 대해 살펴본다. PSDM은 효과적인 중소기업 생산정보를 위하여 시스템 과정을 표준화 하고 단계별 주요 활동에 대한 연구와 함께 프로젝트 범위, 일정, 비용, 인적자원 관리를 위한 WBS(Work Blockdown Structure)작성, 시스템의 신뢰성 품질, 생산성 향상을 위한 관리 항목 등의 내용을 포함하고 있다.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.14 no.6
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• pp.199-205
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• 2014

We would like to study and develop the optimized WBS(Work Breakdown Structure) considering project's range, schedule, cost and human resources management with defining phased work in main task and preceding and escorting relationships for effective small and medium enterprises' informatization through standardized PSDM(Production System Development Methodology). For more systemic and effective system built-up, it introduces production information with WBS study which is appropriate for the small and medium enterprises with setting up management items for enhancing system's reliability, quality, productivity, smooth communication among the participated enterprises such as the small and medium enterprises, IT enterprises, and supervision enterprises, and operational support including maintenance of the built system. This study is purpose of helping a lot of the small and medium enterprises and IT enterprises to build up the systems more effective and reliable within planned schedule using the standardized methodology.

• IE interfaces
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• v.23 no.1
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• pp.35-47
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• 2010

This paper presents a structured framework for developing the embedded subsystem, called ESDMP (Embedded Subsystem Development Methodology for POP), which is one of core components at the development of POP (Point Of Production) system. It is essential that embedded subsystem development methodology must be closely related to the general information system development methodology from the early stage of system development. Therefore, this paper investigates the PDSM (Production System Development Methodology) that is developed by Korea Technology and Information Promotion Agency for SMEs and widely utilized at the fields of POP system development, and proposes the embedded subsystem development methodology aligned with each step of PSDM. The main characteristics of proposed methodology are as follows : First, it is developed to link each step of embedded subsystem development with relating steps of PSDM from the early stage of feasibility study. Second, it provides the procedure for designing and implementing hardware and software simultaneously. Third, it includes the method of reusability for developed products and modules.

• Journal of the Earthquake Engineering Society of Korea
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• v.27 no.5
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• pp.213-220
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• 2023

Seismic fragility curves play a crucial role in assessing potential seismic losses and predicting structural damage caused by earthquakes. This study compares non-sampling-based methods of seismic fragility curve derivation, particularly the probabilistic seismic demand model (PSDM) and finite element reliability analysis (FERA), both of which require employing sophisticated finite element analysis to evaluate and predict structural damage caused by earthquakes. In this study, a three-dimensional finite element model of API 5L X65, a buried gas pipeline widely used in Korea, is constructed to derive seismic fragility curves. Its seismic vulnerability is assessed using nonlinear time-history analysis. PSDM and a FERA are employed to derive seismic fragility curves for comparison purposes, and the results are verified through a comparison with those from the Monte Carlo Simulation (MCS). It is observed that the fragility curves obtained from PSDM are relatively conservative, which is attributed to the assumption introduced to consider the uncertainty factors. In addition, this study provides a comprehensive comparison of seismic fragility curve derivation methods based on sophisticated finite element analysis, which may contribute to developing more accurate and efficient seismic fragility analysis.

• Proceedings of the KIEE Conference
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• 2003.11a
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• pp.306-308
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• 2003

전력품질 향상기기인 DVR, D-STATCOM의 동작특성 분석을 위해서 미리 선정된 부하에 대한 PSDM(Power System Fault and Disturbance Recorder) 데이터를 근거로 ZIP모델을 구성하고 EMTDC 프로그램을 이용하여 이를 분석하였다.

• Journal of the Korea Society of Computer and Information
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• v.15 no.2
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• pp.171-178
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• 2010

The purpose of this research is to develop a standard model for the compilation of production results in molding business to establish the informatization system for the production facility among informatizadon projects which can generate the performance of medium and short term introduction of the project in implementing the system to small and medium industry. The theory on the development method for the standardization of informatization for production facility in molding business applies PSDM (Production System Development Method) for which a number of researches were already done while developing a standardization model by standardizing two processes of raw material demand/supply management and making sum total for production quantity which are main processes for production management process. On the basis of the result of this research, small and medium companies in molding business and relevant specialized IT companies which desire to establish production facility informatization systems will be able to establish more efficient system by applying standardized model, and the result of research will enable to facilitate the establishment of the system for them while providing reliability of the system. Through the application of the result of this research, it will be possible to accomplish the elimination of unreasonable factors in production process, the enhancement of product quality and the saving of production cost.

• Proceedings of the KIEE Conference
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• 2008.07a
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• pp.2023-2024
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• 2008

근래 초기고장(seed fault)에 대한 적절치 못한 대책들이 광역정전으로 파급되어 그 피해정도가 매우 심각하다. 전력의 안정적 공급에 대한 중요성이 새롭게 부각되고 그 예방책에 대한 다각적인 연구가 요구되고 있다. 이에 위성망을 이용한 위기 관리시스템에 대한 필요성이 제기되었다. 본 논문에서는 광역보호를 위해 sPMU(satellite Phasor Measurement Unit), 전력계통 상태감시장치(Power System Dynamic Monitor:PSDM)에 중요한 요소로서 전력계통에서 가장 중요한 지표중의 하나인 주파수에 대한 여러 가지 측정방법을 다룬다. 향후 정상상태와 과도상태에서도 측정시간 단축과 측정오차를 줄일 수 있는 최적의 주파수 계측기법을 개발하기 위함이다.