2단계 물류네트워크 시뮬레이터 개발

宋省獻,嚴春植 弘益大學校 科學技術硏究所 2001 科學技術硏究論文集 Vol.12 No.-

One of the important components in designing logistics network is facility location problem. It is possible to solve the real world location problem using the mathematical model included in the package because of the growth of computer hardware technology. In this paper the package is developed to find the optimal network flows and the relevant transportation cost according to the location alternatives of distribution centers in the two stage logistics network. For the given logistics network there are two types of the distribution schema according to the service area constraint of demand points. The one is the minimum cost network flow problem that is solved by the network simplex method and another is the integer programming problem that is solved by the branch & bound method. And the package extracts the distance data that is needed in the optimal model from the geographical data of GIS. The optimal solution can be found using the package developed in this research and the result cab be displayed on GIS map. And also a numerical example is illustrated.

특수교육지원센터 치료지원서비스에 대한 견해 : - 작업치료 서비스를 받는 보호자를 중심으로 -

송민옥,이성자,김훈주 대한감각통합치료학회 2010 대한감각통합치료학회지 Vol.8 No.1

목적 : 본 연구에서는 특수교육지원센터에서 시행되는 치료지원서비스의 인식, 목적, 특징 및 개선방안을 살펴봄으 로써 치료지원서비스의 전반적 실태를 파악하고 이를 통해 최적의 치료지원서비스를 제공하기 위한 기초자료로 제시하고자 한다. 연구 방법 : 현재 특수교육지원센터에서 치료지원서비스를 받고 있는 치료지원대상 아동의 보호자를 대상으로 개별 인터뷰가 진행되었다. 인터뷰는 평균 40분이 소요되었으며, 모든 인터뷰는 녹취되었다. 결과 : 치료지원서비스에 대한 근본적인 인식이 부족하였고, 치료영역의 전문가가 치료를 담당함으로 인하여 치료사에 대한 신뢰도가 높은 것으로 조사되었다. 또한 치료실의 시설 및 교재교구의 다양성으로 인해 질적으로 높은 치료를 받는다고 생각하고 있었으며 모든 연구대상자는 무상교육을 치료지원서비스의 특징으로 꼽았다. 결론 : 작업치료사가 특수교육지원센터에서 치료지원서비스 전문가로 자리 매김하기 위해서 많은 노력과 연구 및 대외적인 홍보가 필요하다. Objective : The purpose of this study is to provide practical guidelines for the better performance of the Occupational therapy services(OT services) in the Supporting Center for Special Education. The study is based upon the quality and satisfaction of the OT services, measured by interviewing parents whose children have taken the services provided by Ulsan Kang-Nam Supporting Center for Special Education. Methods : Five parents for the children having OT services since March, 2010 in the Kang-Nam Supporting Center were interviewed individually. The interview per each person took thirty to fifty minutes and was all audio-recorded. Results : The satisfaction of the qualification for the OT therapists working at the Kang-Nam Supporting Center was high. The quality for treatment facilities and the variety for treatment materials met the expectation for OT to be well-performed. The free OT treatment system was the one of significant features for the OT services provided by the Kang-Nam Supporting Center. However, the perception of the interviewed parents for the OT was very low.

초등학교 수학 영재학급용 프로그램 개발에 관한 연구

송상현,김지영 인천교육대학교 과학교육연구소 2003 과학교육논총 Vol.15 No.-

본 연구는 초등학교 수학 영재학급에서 수학 영재들이 자신들의 영재성을 충분히 발휘할 수 있도록 하는 수학 영재 교육 프로그램을 개발하기 위한 방향을 제안하는 것이다. 이를 위하여 여러 선행 연구들을 분석/검토하여 프로그램의 목적, 유형, 내용, 운영 면에서 수학 영재 교육 프로그램 개발의 4가지 기본 방향을 정하였다. 이러한 개발의 기본 방향에 따라 전체 프로그램의 목적과의 일관성, 영재의 특성 고려, 프로그램의 유형, 학습 자료의 내용, 학습 자료의 성격, 교수 방법, 평가, 각 단위 수업에서의 구현 중점, 자료의 체제의 측면 등 9가지 면에서 수학 영재 학급용 교수-학습 자료 개발의 준거를 수립하였다. 그리고 이에 따라 초등학교 6학년 수학 영재학급의 교육 프로그램과 교수-학습 자료를 개발하고 현장에 적용하여 12차시의 수업을 분석해 봄으로써 앞의 10가지 자료개발 준거가 후속 자료개발에 시사하는 7가지의 중요한 시사점을 얻었다. The purpose of this study is to develop a Gifted Education Program in math-gifted class in elementary school. The literature analyzed in this study included earlier studies on math-gifted education programs and relevant teaching materials, math-gifted curriculum published in KEDI(Korea Educational Development Institute), and reports by gifted education demonstration schools. We proposed 4 guidelines to open the math-gifted education program. Based on the 4 guidelines, we established 9 criteria to develop math-gifted teaching/learning materials and proposed 7 considerations.

복수 설비보전센타의 복수정차 입지문제

宋省憲 弘益大學校 1988 弘大論叢 Vol.20 No.2

In many maintenance services the maintenance unit usually visits a number of demand points in a single tour. The multistop location problem is to find the depot location for the maintenance unit. We focus on locating p depots in a specified region where numerous demand points requiring maintenance services are scattered. We call it the multistop location problem of multiple facility maintenance centers. The method proposed here for the above problem can be uesfully applied to the situations where the service time performing maintenance operation is relatively short and the demand points are densely located in small area.

FMS 작업장에서의 AGV 대기위치

宋省憲 弘益大學校 科學技術硏究所 1994 科學技術硏究論文集 Vol.5 No.-

The purpose of this paper is to suggest the optimal policy for determining the waiting position of automated guided vehicles according to the specific situations in a flexible manufacturing system. The waiting positions play an important role for the efficient utilization of vehicles. Three waiting policies are compared in terms of total waiting time, total number of parts waiting in system, average number of parts transported per vehicle. Those criteria are evaluated under various conditions by using SLAMSYSTEM.

의과대학 인성교육 모델개발을 위한 예비연구

송창훈,임성철,박종,이승일,도남용,박상기,박상화 조선의대 1998 The Medical Journal of Chosun University Vol.23 No.1

Anabaena variabilis ATCC 29413의 生長과 窒素固定活性에 미치는 環境要因의 影響

宋承達,韓東勳 慶北大學校 1992 論文集 Vol.52 No.-

Anabaena variabilis ATCC 29413, a photoautotrophic and nitrogen fixing cyanobacteria, was in vestigated on the growth, heterocyst differentiation and nitrogen fixation activities(ARA) along different media and environmental treatments. The lag phase in the growth curve with N-added Allen & Arnon(AA/8) was shorter than those with N-free AA/8 and N-added BG 11 media. The nitrogen fixation activity increased for 144hours during initial cell growth (Abs_660 =0.8) with N-free medium of AA/8 and then decreased, while the growth continued. It was assumed that the drastic decline of ARA beyond the cell growth of A_660=0.8 was caused by the accumulation of nitrate(NO_3^- -N ; 4.2ppm)in the medium. The accumulation of ammonium(NH_4+ -N) in the medium was about 0.32 ppm after 156hours of cell growth. The optimal conditions for nitrogenase activity of A. variabilis ATCC 29413 were anaerobic, 10,000 lux, 30℃ and pH 8 with the N-free minimal medium. The activity was significantly inhibited by less concentrations of ammonium(1 mM) than that of nitrate(6 mM). Phosphate and carbonate inhibited the activity by high concentrations although low concentrations stimulated the activity. The treatments of several toxic heavy metals showed strong inhibition of the nitrogenase activity in the order of Hg^++>Cd^++>Co^++>Zn^++>PB^++, and the concentrations for 50% inhibition of the maximum ARA were 0.41, 0.47, 0.51, 0.66 and 8.1ppm, respectively. The recovery of ARA and growth by the carbon sources in the dark condition was observed in the low concentration(1%) and in the order of sucrose>fructose>flucose.

송유관 요율결정 지원시스템의 개발 및 활용

송성헌,김우제,이문배 한국경영과학회 1999 經營 科學 Vol.16 No.1

Pipeline is an important transportation mode for oil products The pipeline transportation and storage rates affect the pipeline usage, and the pipeline usage also affects the transportation revenue and operating costs of the pipeline The purpose of our study is to develop a decision support system simulating pipeline transportation and storage rates for maximizing the utilization and profitability of the oil pipeline and apply it to the real situation To do this, a simulation model to help the decision maker decide the rates of the oil pipeline is first proposed Second, a simulation program is developed, which enables the user to evaluate the various scenarios of oil transportation and storage rates Finally, this program is applied to the case study of oil industry in Korea

수정진동자를 이용한 2가이온의 전기화학적 특성 분석

송성훈,김종민,박지선,손진언,김영한,장상목 동아대학교 공과대학부설 생산기술연구소 1998 生産技術硏究所硏究論文集 Vol.3 No.2

This paper shows eletrochemical extraction property changes of dyed cations by the various eletrochemical conditions using quartz crystal technique. The quantitative and qualitative changes of electrode surface was monitored measuring oscillation parameters of quartz crystal. The results suggest that the eletrochemical extraction of cation is influenced by the various factors such as ionic size, ionic intensity and tendency of ionization.

실시간 차량경로결정을 위한 동적 최단경로 알고리즘

宋省薰,金基燮 弘益大學校 科學基術硏究所 1999 科學技術硏究論文集 Vol.10 No.2

During times of traffic congestion, the traffic network in a transient, time-dynamic state resembles a dynamic network. In addition, in the context of Intelligent Transportation Systems(ITS), the network can accurately detect such transient behavior using traffic sensors, and several other information gathering devices. In the time-varying traffic situation, the rapid calculation of user-optimal, system optimal and multiple optimal routes is necessary. In this research, several existing shortest path algorithms were reviewed. And we suggest a systematic procedure to find a dynamic shortest path using k-shortest path algorithm and genetic algorithm. The suggested procedure can be also applied to calculate user-optimal path for vehicle scheduling and dispatching problems.