• 한국IT서비스학회지
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• 제4권2호
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• pp.61-69
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• 2005

RFID is used for tracking systems in various business fields these days and these systems brought considerable efficiencies and cost savings to companies. Real-time based information acquired through RFID devices could be a valuable source of information for making decisions if it is combined with decision support tools like OLAP of a data warehouse that has originally been designed for analyzing static and historical data. As an effort of extending the data source of a data warehouse, RFID is combined with a data warehouse in this research. And OLAP is designed to analyze the dynamic real-time based information gathered through RFID devices. The implemented prototype shows that ubiquitous computing technology such as RFID could be a valuable data source for a data warehouse and is very useful for making decisions when it is combined with online analysis. The system architecture of such system is suggested.

• 한국인터넷방송통신학회논문지
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• 제15권6호
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• pp.311-319
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• 2015

본 논문에서는 산업공장 내의 생산 효율을 높이기 위하여 제조공정 자원을 예측하고 위험 관리를 효율적으로 이행하는 자원예측 및 위험관리를 위한 의사결정 시스템을 제안하였다. 각 공정에서 발생되는 다양한 정보들을 효율적으로 관리하는 세부 공정별 시나리오 생성이 어렵고, 동일한 공정 내에서도 다양한 제품의 생산하기 위해 제조 설비의 조건 변경이 빈번하다. 제품의 생산 주기 또한 일정하지 않아 연속되지 않은 데이터가 발생하여 소량의 데이터로 변동을 확인해야 하는 문제점이 있다. 이러한 문제점을 해결하기 위해서는 제조공정의 데이터 일원화, 공정 자원 예측, 위험 예측, 공정 현황 모니터링을 통하여 문제 발생시 즉각 조치가 가능하여야 한다. 본 논문에서는 설계도면 변경 범위, 자원 예측, 공정 완료 예정일을 회귀알고리즘을 이용하여 수식을 도출하였으며, 분류 트리 기법, 경계값 분석을 통하여 3단계로 의사결정 시스템을 제안하였다.

• Spatial Information Research
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• 제17권3호
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• pp.251-259
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• 2009

생태계 회복의 중요성이 부각됨에 따라 생태네트워크 구축을 위한 다양한 연구가 수행되고 있다. 특히 GIS를 이용한 환경정보자료의 구축과 분석기법의 개발은 이를 더욱 효과적으로 수행하게 하였다. 본 연구에서는 경관생태학 이론을 기반으로 도시생태네트워크 구축을 위한 공간의사결정지원체계를 제시하였다. 제시된 공간의사결정지원체계는 다음과 같은 4단계로 구성된다. 첫째, 생태네트워크의 주요 골격을 형성하는 핵심 녹지를 중첩기법을 통해 도출한다. 둘째, 서식지 분포자료를 이용하여 서식녹지를 파악하고, 중력모형을 적용한 연결성 평가를 통해 연결녹지의 도입이 필요한 지역을 도출한다. 셋째, 최소비용경로분석을 이용하여 파편화된 녹지를 연결하기 위한 최적의 경로를 도출한다. 마지막으로 도시 생태네트워크 분석결과와 현재 토지이용간의 비교를 통하여 분석결과의 적정성을 검증한다. 본 연구는 도시 내 생태공간을 증진하기 위한 계획적 도구로서 난개발 방지, 종 다양성 증진 등에 기여할 수 있을 것이다.

• Structural Engineering and Mechanics
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• 제34권6호
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• pp.739-753
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• 2010

Pointing to the design requirement of prestressed space grid structure being the target cable force, the pretension scheme decision analysis method is studied when there's great difference between structural actual state and the analytical model. Based on recursive formulation of cable forces, the simulative recursive system for pretension process is established from the systematic viewpoint, including four kinds of parameters, i.e., system initial value (structural initial state), system input value (tensioning control force scheme), system state parameters (influence matrix of cable forces), system output value (pretension accomplishment). The system controllability depends on the system state parameters. Based on cable force observation values, the influence matrix for system state parameters can be calculated, making the system controllable. Next, the pretension scheme decision method based on cable force observation values can be formed on the basis of iterative calculation for recursive system. In this way, the tensioning control force scheme that can meet the design requirement when next cyclic supplemental tension finished is obtained. Engineering example analysis results show that the proposed method in this paper can reduce a lot of cyclic tensioning work and meanwhile the design requirement can be met.

• 재활복지공학회논문지
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• 제9권1호
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• pp.61-66
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• 2015

심폐기능 재활환자에 있어서 흉부 X선 화상은 임상적 소견 중 가장 일반적이고 널리 사용되는 의학정보로서 질환의 예후에 대한 다양한 해부학적 정보를 제공한다. 흉부 X선 영상에서의 영역분할 및 영상해석에 관한 많은 연구에 의해 다양한 해석 알고리즘이 개발되어 왔으나, 영상의 복잡성과 다양성에 의한 해석 차이가 존재한다. 본 논문에서는 X선 영상에서의 질환 여부를 진단하기 위해 영상처리 및 분석방법에 기반한 흉부 X선 영상의 진단지원시스템이 제안되었다. 흉부 X선 영상에서 폐 영역을 검출하기 위하여 임계값 및 형태학적 방법이 적용되었으며, 형태학적 측정 및 질감 분석은 분할된 영역에서 수행되었다. 실제 흉부 X선 영상에 적용한 실험결과와 임상 전문가의 진단 결과를 비교하여 제시하였으며, 제안한 방법이 충분히 의사결정지원시스템에 활용될 수 있음을 보였다.

• 농촌계획
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• 제4권1호
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• pp.98-107
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• 1998

For efficient development of rural facilities, choice of their optimum locations would be an important issue, however, existing research works concentrated much more an allocation policy of urban industrial complex and public facilities than rural ones. In this study, because agricultural-cum-industrial complex has been the most widely developed representative one of rural facilities, it was selected as a case study facility. As a pre-study to system development, existing governmental location-decision system was checked and interviewing survey carried out to find out on-spot problems. And, being based on literature review and survey analysis results, 4-step optimum locational decision model was developed , formulation of locational goal system, ranking tabulation on components, determination of significance values of components, calculation of component scores. Finally, through the case study works on 3 sites, system applicability was checked, Considering together the simplicity problem of existing guidelines and the interviewing survey results favoring the diversified viewpoints, it would be necessary to develop multifaceted support system for locational decision making. 3-tier classification steps from the higher, middle to lower one were used and their underpinning viewpoints were sorted as on regional development, entrepreneurship, spatial rationality, from which a tentative locational goal system was formulated. Through the expert group checking, final locational goal system was determined having 3 of the higher classification items, 7 of the middle ones, 23 of the lower ogles. For ranking tabulation, 3 types of ranking criteria were arranged which were based on statistical analysis using mean and standard deviation(Type I ), its existence or not 1 good or not(Type E ), and the others(Type E ). From the significance evaluation results, regional development and entrepreneurship aspects were valued much higher than spatial rationality aspect. And, in the middle step, items as spread effects of regional economy, accessibility and social potentialities were highly valued while infrastructural development level and natural condition being low. The application results of the system to 3 case study total. However, the detailed ones differed among study the influencing effects on regional economy, and contrast greater the infrastructural development level. Conclusively, final evaluation values well represented the characteristics of each area. If this system be complemented and applied comprehensively by the successive studies, it would be developed to a general model of locational decision supporting system for rural facilities.

• 한국환경과학회지
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• 제10권2호
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• pp.85-90
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• 2001

The conflicts between environment protection and economic development are becoming increasingly important in environmental decision making of Nakdong River Basin. A science-based evaluation system is now needed to represent both the environmental values and the economic values with a common measure. EMERGY, spelled with an \"m\" evaluates both the work of river and that of human in generating products and services. The monetary cost-benefit analysis and the environmental accounting by EMERGY analysis were applied to determine whether there will have a net benefit in environmental decision making of Nakdong River Basin. Based on the results of the environmental accounting, all alternatives which related to environmental decision making of Nakdong River Basin show that more and more of EMERGY cost becomes needed than the a EMERGY benefit from getting water to drink in the lower basin. From these results, for selecting alternatives to manage water quantity and quality that is sustainable in the environmental use and economic development, environmental accounting concepts must be considered, and the economic structure of Nakdong River Basin should be changed from the present industrial structure to social-economic based on ecological-recycling concept for the sustainable use of Nakdong River.ong River.

• 산업경영시스템학회지
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• 제39권4호
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• pp.49-59
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• 2016

Naval combat system developed in-country is progressing at an alarming rate since 2000. ROK navy will be achieved all vessels that have combat system in the near future. The importance of System Engineering and Integrated Logistics Support based on reliability analysis is increasing. However, reliability analysis that everyone trusted and recognized is not enough and applied practically for development of Defense Acquisition Program. In particular, Existing Reliability Analysis is focusing on reliability index (Mean Time Between Failure (MTBF) etc.) for policy decision of defense improvement project. Most of the weapon system acquisition process applying in the exponential distribution simply persist unreality due to memoryless property. Critical failures are more important than simple faults to ship's operator. There are no confirmed cases of reliability analysis involved with critical failure that naval ship scheduler and operator concerned sensitively. Therefore, this study is focusing on Mean Time To Critical Failure (MTTCF), reliability on specific time and Operational Readiness Float (ORF) requirements related to critical failure of Patrol Killer Guided missile (PKG) combat system that is beginning of naval combat system developed in-country. Methods of analysis is applied parametric and non-parametric statistical techniques. It is compared to the estimates and proposed applications. The result of study shows that parametric and non-parametric estimators should be applied differently depending on purpose of utilization based on test of normality. For the first time, this study is offering Reliability of ROK Naval combat system to stakeholders involved with defense improvement project. Decision makers of defense improvement project have to active support and effort in this area for improvement of System Engineering.

• Spatial Information Research
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• 제12권1호
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• pp.57-71
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• 2004

이 토지 컨설팅 정보 시스템(Land Consulting Information System)은 토지에 건축, 형질 변경 등 개발행위와 관련하여 구입토지의 선정에서부터 개발의사결정에 이르는 여러가지 토지법률정보, 요구토지의 입지조건정보, 개발목적에 부합하는 토지의 분포정보, 매매나 세입 관련 부동산 정보 등 사람들의 다양한 요구조건과 의사결정 요소들을 컴퓨터 시스템을 통해 질의하고 검색, 분석함으로서 경제적이고 신속한 정보의 취득과 이를 통한 신뢰성 있는 개발과 구입의 의사결정 정보를 제공(지원)하기위한 목적에서 개발되었다. 시스템 기능의 인지도를 향상시키기 위해 "ALGOSA" 라 별칭의 로고를 부여하였으며, 일반 개인은 물론 현존하는 전국의 수만 업체에 이르는 부동산사무소(공인 중개사), 측량설계사무소, 건축설계사무소, 전문토지개발회사 등 컨설팅 업체를 중심으로 시스템 보급의 필요성이 기대되며, 나아가 지방자치단체의 개발관련 인허가부서에서도 이 시스템을 도입함으로서 개발행위 인허가 토지의 체계적 관리는 물론 불법 개발행위 단속과 객관적인 공시지가부여 기준제시를 위한 실제 토지이용 정보제공 등 폭넓은 시스템 도입의 효과가 기대된다.

• 전기의세계
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• 제27권1호
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• pp.49-55
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• 1978

This paper describes a computer method for power system planning. Power system planning was usually studied through individual programs. Because of the laborious work involved in data preparation, the increase of task for power system planning and the time required for the detailed analysis of results, the available time for assessment and decision making has been sacrificed. In order to improve the above situation, the use of data base techniques an the simplified evaluation of the presented programs were newly developed. This program has been used successfully for the routine of power system planning in Korea Electric Company. In addition, this paper describes some results of analysis and evaluation of power system planning in KECO.