경량전철 차량기지 동적 시뮬레이터 개발

양원모,Yang, Won-Mo 한국시뮬레이션학회 2011 한국시뮬레이션학회 논문지 Vol.20 No.1

저탄소 녹색성장의 시대를 맞아 철도 교통의 중요성이 강조되고 있다. 하지만 차량기지 시뮬레이션에 대한 연구는 부족한편이다. 본 논문은 경량전철(LRT:Light Rail Transit) 차량기지에 대한 동적 시뮬레이터 개발에 관한 논문이다. 시뮬레이션툴에 대한 요구사항 분석, 시뮬레이션 툴 아키텍처, 데이터베이스 설계, 시뮬레이션 알고리즘, 시뮬레이션 툴 설계 및 개발에 대해 설명하고 있다. 경량전철 차량기지 동적 시뮬레이터는 선로정보, 열차정보, 신호 및 분기기 정보, 열차작업정보, 역사정보 등을 편집하는 네트워크 편집기와 열차주행 알고리즘을 연산하는 시뮬레이터, 시뮬레이션 결과를 표 및 그래프로 조회하는 리포터와 시뮬레이션 결과를 동적으로 애니메이션을 통해 확인할 수 있는 애니메이터의 4가지 모듈로 구성되어 있다. 경량전철 차량기지 동적 시뮬레이터에 대한 구조 및 설계, 개발에 대한 전반적인 내용을 다룬 본 연구는 시뮬레이터를 새로 개발하는 경우 좋은 참고자료로 활용될 수 있을 것으로 보인다. Recently, in the era of low carbon and green growth, the importance of railway transportation is being emphasized However, there is a lack of research on simulation for railway depot. This paper presents the development of the dynamic simulator for LRT(Light Rail Transit) depot. This study presents explanations of requirement analysis, architecture, database design, simulation algorithm, and design and development of the simulation tool. The dynamic LRT depot simulation tool consists of four modules; a Network Editor to create and modify information regarding railroad, train, signal, turnout, job and station, a Simulator to calculate train movement algorithm, a Reporter to show simulation results in table and graphs, and an Animator to animate simulation results dynamically. It is hoped that this study on general details of structure, design and development of LRT depot dynamic simulator will perform as a good reference to future development of new simulation tools.

산지별 시판녹차의 카페인, 유리아미노산, 비타민C 및 카테킨 함량 비교

김봉수(Kim, Bong-Soo),양원모(Yang, Won0-Mo),최 정(Choi Jung) 한국차학회 2002 한국차학회지 Vol.8 No.1

The chemical and catechin contents of green tea in Bosung, Sunchon, Kwangyang, Hadong regions were compared. According as growth is marched, total nitrogen decreased on the whole, but there was no difference between regions. The ash also decreased according as growth is marched, and goods that is collected in Bosung region is high the content. The caffeine content in goods collected in Seungju region is higher than other regions. Total free amino acid content in goods collected in Daap region is higher than other regions. Also the theanine content in goods collected in Daap region is higher than other regions as free amino acid. The vitamin C content in goods collected in Bosung region is higher than other regions. However, the difference of chemical contents don't know whether meteorological conditions or manure control and manufacture method, so required to detail research. The (-)EGCg in catechin contents were high as 55%. The total catechin contents in goods collected in Bosung region is highest and lowest in Daap region. And it is increased the harvesting time is later.

噴霧耕과 簿膜循環養液栽培에 따른 토마토의 生理, 生態 및 形態的 適應에 關한 比較研究

梁元模(Yang Won Mo) 한국원예학회 1991 한국원예학회 학술발표요지 Vol.9 No.1

랙피니언천창 내재해 단동온실 CFD 유동해석

양원모 ( Won Mo Yang ),임영택 ( Yeong Taek Lim ) 한국농업기계학회 2015 한국농업기계학회 학술발표논문집 Vol.20 No.1

새로운 水耕栽培方式 開發에 관한 硏究

梁元模(Yang Won Mo) 한국생물환경조절학회 1992 한국생물환경조절학회 학술발표논문집 Vol.1 No.1

새로운 水耕農法 開發에 관한 基礎硏究

梁元模(Yang Won Mo),梁承烈(Yang Seung Yul) 한국원예학회 1991 한국원예학회 학술발표요지 Vol.9 No.1

한국 차품평사 양성제도 및 교육과정 연구

양원모(Won Mo Yang) 한국차학회 2012 한국차학회지 Vol.18 No.4

The problems that make it difficult to increase the number of people who drink tea are a non-modernized culture, excessive competition among tea companies, relatively low marketing skills, lack of variety of tea products, failure to control quality, etc. To solve these problems, it is necessary to set a reasonable standard of evaluating tea systems, and to adapt the advanced marketing system. This, however, is not possible without a professional tea taster. In the present research, two solutions were suggested to develop a Korean tea taster certification system and a training program for those amenable to Korean situations. This study evaluated a national tea taster certification system by public examination or Korea tea taster accreditation board by commission organization. Properly qualified tea tasters are expected to boost the tea industry and cultural value of tea. Whichever system is chosen, the expected goal can be achieved when standards acceptable to the producer, consumer, scholar, researcher, leader, and government officer can be found. Aspects that should form the basis and standard of these discussion include the tea taster's grade, criteria of certification requirements, contents of educational training, procedure and method of examination, regular training of the qualifier, qualification and examination of the training organization, and the standard curriculum of tea testers.

스크린설치높이·공기유입량 차이에 따른 벤로형 유리온실 미기상 CFD 유동해석

양원모(Won Mo Yang) (사)한국생물환경조절학회 2020 생물환경조절학회지 Vol.29 No.1

겨울철 벤로형 유리온실(W59×L68×H5.9m) 보온스크린 높이의 차이에 따른 실내온도 변화를 파악하기 위하여 00시부터 04시까지 30분 간격으로 열유동해석을 하였다. 초기에 는 상대적으로 난방 외부접촉면적이 큰 보온스크린 설치높이 5.9m에서 보온스크린 설치높이 4.1m에 비해 온도감소가 빨라 낮은 온도를 나타냈으나 해석 2시간 이후부터는 상대적으로 온도감소가 느렸고 04시에는 0.6°C 높았다. 그러나 해석시작 1시간 후 실내온도가 약 13°C까지 내려가고, 그 이전에 난방기가 작동해야 된다고 볼 때, 해석 2시간 동안 온도감소가 상대적으로 느렸던 보온스크린 설치높이 4.1m에서 5.1m에 비해 난방에너지 절감에 유리할 것으로 판단되었다. 토마토가 자라는 지면 2m 높이에서의 유동은 보온스크린 설치높이 5.9m에서 4.1m에 비해 상대적으로 넓고 빨랐으며 유동해석 1시간 후인 01시의 평균차이는 0.034m·s<SUP>-1</SUP>였다. 여름철 차광스크린 설치높이를 5.7m와 3.9m로 달리하되 70%닫힘 조건에서 12시부터 13시까지는 온실하부덕트 외부공기유입량 0.67m³·s<SUP>-1</SUP> 상태 그 후부터는 외부 유입공기를 3배로 증가하여 냉방효과를 비교하였다. 초기 12시부터 13시 까지는 차광스크린 70%닫힘 상태에서 무차광에 비해 오히려 평균 약 0.9°C 높았지만 외부공기유입량이 증가하는 13시 이후 부터는 차광스크린 70%닫힘 조건에서 온도가 감소하였고 14시 30분에는 무차광에 비해 0.5°C 낮았다. 차광스크린 70% 닫힘 조건에서 바닥면의 온도분포는 스크린 설치높이와 개방정도에 비례하여 낮았으며 무차광에 비해 8°C이상 낮았다. 온실 내 상대습도는 차광스크린을 30% 개방하는 조건에서는 차광스크린의 높이나 개방정도에 따른 차이가 미미하였다. The natural change of winter night temperature from 00:00 to 04:30 O’clock with the different height of thermal screen in a venlo type glasshouse (W59×L68×H5.9 m) was studied using computational fluid dynamics (CFD). At the early stage of CFD analysis, the room temperature decrease of glasshouse with the 5.9 m height of thermal screen were faster than it with the 4.1m height of thermal screen, but at 2 hr after analysis it was slower than in it with the 4,1m, the temperature difference was 0.6°C after 4 hr. If we consider that turn on the heater when the temperature were decrease below 13°C at 1hr after CFD analysis, it is good for energy saving in the glasshouse with the 4.1 m height of thermal screen rather than in it with the 5.9 m height, because of the temperature decrease were slow during 2 hrs after analysis. The airflow at the height of 2 m which were grown tomato were fast and wide in the glasshouse with the 5.9 m height thermal screen rather than in it with the 4.1 m, the speed difference was 0.034 m·s<SUP>-1</SUP> at 1hr after CFD analysis. The effect of temperature decrease in summer season were compared with the different height of shading screen from 12:00 to 14:30 O’clock. The height of shading screen were 5.7, 3.9 m, the gap of it were 30%. The air-inflow quantity by the fan with duct at lower part of venlo glasshouse was 0.67 m³·s<SUP>-1</SUP> until 1hr and to increase 3 times of it from 1hr after analysis. The roof window were open 100%. Until 1hr of CFD analysis, the temperature in the 30% open of shading screen was 0.9°C higher than in the none shading screen. From 13:00 O’clock when the air-inlet quantity to increase 3 times, the temperature in case 30% gap of shading screen were decreased compare with the none shading screen, the temperature difference was 0.5°C at 14:30 O’clock. The temperature on the floor surface in case 30% gap of shading screen were lower with it’s height increase, the temperature difference was 8°C compare with none shading screen. The relative humidity difference were insignificant by the height and gap of shading screen.

한국차에 적합한 신품평기준과 간편채점표의 활용

양원모(Won-Mo Yang) 한국차학회 2005 한국차학회지 Vol.11 No.2

It is important to differentiate Korean tea by establishing the Koreans' differentiated evaluation of tea to overcome the crisis of increasing pressure of foreign tea and to strengthen the international competitiveness of Korean tea. It is natural for Korean's preferred teas to be highly evaluated when we evaluate Korean tea. Since Korean tea consumers value the taste and the balance of taste, flavor and color, the standard score and the ballot for sensory test are designed to focus on them. When teas are evaluated, diversity should be considered because the lose of diversity causes the decrease of competitiveness. Terms of descriptive sensory test is excluded and only the items for evaluate is sorted out and presented to obtain diversity. However in the future we have to develope the new ballot which is based on descriptive sensory test for more accurate sensory test. Since green tea, half fermented tea, and fermented tea have their own uniqueness, the score is differentiated to reflect the uniqueness while the items for sensory test is equalized. The sequence of each items in ballot for test is stated in accordance with testing order. In the case of evaluating color earlier than flavor, change the place of flavor and color in ballot. Also, evaluating appearance later than quality should be considered, since Korean consumers value quality than appearance. Testing scale of each item is marked in five grades-very good, good, average, bad, very bad- or in seven grades-excellent, very good, good, average, bad, very bad, terrible. The score difference between grades is 1 point or 2 points according to the importance of testing items. The soaking time of tea in hot water for sensory test are needed within three to four minutes, for the best reflection of Koreans' preference of mild tea. Further studies of differentiation of score according to the purpose of test, diversification of items of ballot and testing scale, discrimination of testing equipment, and standardization of testing order and instruction are required to improve the precision and reliability of sensory test for Korean tea.

스마트그리드 시스템 시뮬레이션 기술 연구

양원모(Yang Won Mo),김민제(Kim Min Je) 한국IT서비스학회 2011 한국IT서비스학회 학술대회 논문집 Vol.2011 No.5

스마트그리드(Smart Grid) 시스템이란 전력망에 정보기술(IT)을 융합하여, 전력 공급자와 소비자가 양방향으로 실시간 정보를 교환할 수 있는 에너지 효율을 최적화 하는 차세대 전력시스템이다. 스마트그리드는 스마트 전기미터기, 전기차 충전시설, 분산형 충전시스템, 풍력과 태양광 같은 친환경적인 신재생 에너지 등 다양한 구성요소와 실시간 요금제, 전력 공급자의 다양화 등 동적인 운영 방식으로 인해 전체 시스템 관점의 예측이 힘들다. 또한 효율적인 스마트그리드 시스템이 되기 위해서는 시뮬레이션 기술이 꼭 필요하며 기존 연구사례도 대부분 정적이거나 일부 시스템에 국한되어 스마트그리드 시스템에 대한 전체적이며 동적인 시뮬레이션 시스템에 대한 연구 사례는 거의 없었다. 본 연구에서는 이러한 스마트그리드 시스템 시뮬레이션 기술에 대한 형식론적 이산사건시스템명세 적용방안, 클래스 구조, 전력망 그래프 모델 및 시뮬레이션 프레임워크에 대한 방향을 제시하고자 한다.