• 대한전기학회논문지
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• 제43권2호
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• pp.179-188
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• 1994

This paper deals with implementation of an expert system to obtain an optimal plan of load transfer for fault restoration with the capability of security monitoring and assessment in distribution systems. Based on the technique of load transfer tree analysis, the proposed expert system can afford to assist system operators in proposing an optimal plan of load transfer for fault restoration, In paticular, an application of the proposed ES to practical distribution systems yields an optimal load transfer plan which ensures system security by considering security assessment for contingency of feeders and main transformers in the knowledge based sense.

• Journal of information and communication convergence engineering
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• 제2권2호
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• pp.119-122
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• 2004

In this paper, we examine the necessity and the role of technology transfer/diffusion in the frame of national technology innovation system. On the base of this, we present a construction plan of technology transfer/diffusion system to make the national electric industry for 21st century to possess the competitive power. To achieve above purpose, we examine the relations between theory of technology transfer/diffusion structure and policy. Furthermore, we try to find the necessity for construction of technology transfer ＆ diffusion system and a driving plan. Then, it is analyzed that expected design requirements for the construction of electric technology transfer ＆ diffusion system. Finally, construction and activation plan for electric technology transfer ＆ diffusion system are presented, which would strengthen the national technology competitiveness.

• 현장농수산연구지
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• 제22권2호
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• pp.23-36
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• 2020

The purpose of this study is to understand the phenomenon of agricultural management transfer and to present a plan to activate Korean management transfer through institutional consideration. To this end, the domestic and overseas agricultural management transfer system was identified, and an appropriate institutional plan for the country was sought. There are six ways to activate the management transfer system proposed in this study. First, establishment of an agricultural management transfer agency, second, training and utilization of management transfer experts, third, establishment of an agricultural succession certification support institution, fourth, operation of specialized training courses for management transfer, fifth, (local government) linked operation of a farming support center, sixth, agricultural management transfer legislation and securing of budgets. The above agricultural management transfer system is expected to contribute to the advancement of management transfer activation.

• 한국의학물리학회지:의학물리
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• 제31권4호
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• pp.153-162
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• 2020

Purpose: We aim to evaluate the accuracy and effectiveness of an automatically converted radiation therapy plan between Radixact machines by comparing the original plan with the transferred plan. Methods: The study involved a total of 20 patients for each randomly selected treatment site who received radiation treatment with Radixact. We set up the cheese phantom (Gammex RMI, Middleton, WI, USA) with an Exradin A1SL ion chamber (Standard Imaging, Madison, WI, USA) and GAFCHROMIC EBT3 film (International Specialty Products, Wayne, NJ, USA) inserted. We used three methods to evaluate an automatically converted radiation therapy plan using the features of the Plan transfer. First, we evaluated and compared Planning target volume (PTV) coverage (homogeneity index, HI; conformity index, CI) and organs at risk (OAR) dose statistics. Second, we compared the absolute dose using an ion chamber. Lastly, we analyzed gamma passing rates using film. Results: Our results showed that the difference in PTV coverage was 1.72% in HI and 0.17% in CI, and majority of the difference in OAR was within 1% across all sites. The difference (%) in absolute dose values was averaging 0.74%. In addition, the gamma passing rate was 99.64% for 3%/3 mm and 97.08% for 2%/2 mm. Conclusions: The Plan transfer function can be reliably used in appropriate situations.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2011년도 춘계학술대회 논문집
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• pp.882-887
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• 2011

For many years Korean railway industry has experienced substantial growth based on foreign advanced technology. Recently some problems was clearly stated on effective management, practical use and transfer of the railway technology. This paper presents some results of the study on necessary requirements of the expert system for railway technology transfer. We propose a general plan to develop the expert system and the contents on railway technology transfer in the text of this article.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2011년도 춘계학술대회 논문집
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• pp.775-789
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• 2011

Centering on KTX stations, Korea is implementing specialized development of metropolitan business zones nationwide and is in the process of building the transfer link system of transportation in order to actualize intermodalism nationwide. Daejeon station, hub of high-speed railway requires the effective transportation transfer system considering Daejeon station area reorganization plan and opening of second phase high-speed railway. Based on the analysis of the possibility and validity of building a transit center under the Transportation System Efficiency Act, it is necessary to make a mutual benefit in a regional development by installing the resonable transfer system between railway and other transportation services. Through analysis of current situations and technical, economic and environmental feasibility evaluation, design plan of effective transportation transfer system in Daejeon station is proposed.

• 항공우주기술
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• 제13권2호
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• pp.122-130
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• 2014

2018년 발사를 목표로 한국항공우주연구원이 개발중인 정지궤도복합위성(GEO-KOMPSAT-2)은 사용되는 발사체에 따라 GTO(Geostationary Transfer Orbit) 혹은 SSTO(Supersynchronous Transfer Orbit)를 거쳐 정지궤도에 진입하게 된다. GTO는 오늘날 대부분의 정지궤도위성이 사용하는 방식인 반면 SSTO의 경우는 사례가 많지 않고 GTO와는 완전히 다른 기술적인 접근이 필요하다. 본 논문에서는 정지궤도복합위성에의 적용을 목표로 SSTO 운용의 제약 사항을 정리하고 SSTO로부터 정지궤도로 진입하기 위한 액체원지점엔진 점화계획을 예비적인 수준에서 구성하였다. 또한 지상추적소의 가시성을 포함한 궤도 시뮬레이션을 수행하여 구성된 계획을 검증하였다.

• 대한방사선치료학회지
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• 제30권1_2호
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• pp.117-128
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• 2018

목 적 : iDMS(Integrated Database Management System, 통합 데이터베이스 관리 시스템) 내 TOMOTHERAPY 치료 계획을 ACCURAY $Precision^{TM}$ 1.1.1.1을 이용하여 본원의 TOMO HDA와 Radixact 장비 간 Transfer하였고 선량학적 차이를 분석하였으며, 이를 통해 치료 계획 Transfer의 유용성을 평가하였다. 대상 및 방법 : 두경부암 두 부위와 전립선암 두 부위의 치료를 가정하여 4개의 서로 다른 치료 계획을 세웠다. 각 치료 계획은 95 % 처방선량(Prescription dose)이 표적 체적의 99 % 이상 조사되도록 설계하였고, 정상장기 선량은 SMC tolerance dose protocol을 기준으로 하였다. 수립된 치료 계획은 각 장비로 Transfer 시켰으며 Transfer된 치료 계획의 DVH(Dose Volume Histogram) 분석을 통해 선량학적 차이를 비교 평가하였다. 결 과 : Transfer된 치료 계획에서 CTV 및 GTV의 Mean Dose는 증가 및 감소하였으나 유의할 만한 차이는 보이지 않았다. CTV 및 GTV 처방 선량의 Target Coverage는 HDA에서 Radixact로 Trasnfer 시 전부 감소하였으며, CTV에 대한 CI 및 HI 변화도 0.1 이내였다. Normal Organ Dose는 두 치료 계획 모두 HDA에서 Radixact로 Transfer 시 대부분의 항목에서 선량이 증가하였다. 결 론 : 본 실험의 결과에 따르면 Radixact에서 HDA 장비로 치료 계획 Transfer 시 Target Coverage는 기준 이상이었으며 Normal Organ Dose 또한 대부분 같거나 감소하였다. HDA에서 Radixact로 치료 계획 Transfer 시 Target의 Coverage는 감소하는 경향을 보였고, Normal Organ Dose는 Optic Chiasm($D_{max}$ 1.38 Gy 증가), Bladder($D_{max}$ 3.07 Gy 증가), Penile Bulb($D_{max}$ 1.14 Gy 증가) 등 부작용(side effects)을 일으킬 수 있는 장기에서 선량이 증가였다. 이에 따라 치료 계획 Transfer 시 선량 변화에 주의해야 하며 장비 점검으로 인한 일회성 Transfer는 효율적인 방사선 치료를 위해 유용할 것이나, Transfer된 치료 계획으로 치료가 수회간 이어질 경우 치료 계획을 다시 세워 진행해야 할 것으로 사료된다.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 1998년도 추계학술대회논문집:21세기에 대비한 지능형 통합항만관리
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• pp.117-124
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• 1998

This paper proposes a simulation model which evaluates operation plans of container terminal. The operation plans of container terminal consist of berth plan, load plan, unload plan, yard plan, and equipment plan. It is discussed how to apply the simulation method to evaluate those plans. Simulation analysis is based on data about plans from the operation planning system through an interface program. It is discussed what we should got in the simulation, for example, the statistics about container-handling equipment such as container cranes, transfer cranes, yard tractors, and trailers used in the transportation of containers.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2006년도 정기학술발표대회 논문집
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• pp.310-316
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• 2006

Since 'Act on Private Participation in Infrastructure' were changed in January 2005, BTL(Build-Transfer-Lease) projects of Private Participation in Infrastructure was introduced in the domestic construction market for the purpose of providing public facilities with the public. Selecting the most qualified Promoter should be considered discreetly in BTL projects because BTL projects is for projects with approximately thirty year project life cycle, plan, construction, operating, maintenance and obviously the success of the project totally depends on the capability and role of Promoter. However, score for cost is likely to influence selecting Promoter to take the project. Accordingly, low bid contract with too much competition could decrease the quality of the construction plan and operating plan. Thus, this study did preliminary research and documents on problems of evaluation criteria for selecting Promoter in BTL projects, and proposed improvement factors by doing questionnaire over specialists of each field.