http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
음소인식 오류에 강인한 N-gram 기반 음성 문서 검색
이수장,박경미,오영환,Lee, Su-Jang,Park, Kyung-Mi,Oh, Yung-Hwan 대한음성학회 2008 말소리 Vol.67 No.-
In spoken document retrievals (SDR), subword (typically phonemes) indexing term is used to avoid the out-of-vocabulary (OOV) problem. It makes the indexing and retrieval process independent from any vocabulary. It also requires a small corpus to train the acoustic model. However, subword indexing term approach has a major drawback. It shows higher word error rates than the large vocabulary continuous speech recognition (LVCSR) system. In this paper, we propose an probabilistic slot detection and n-gram based string matching method for phone based spoken document retrievals to overcome high error rates of phone recognizer. Experimental results have shown 9.25% relative improvement in the mean average precision (mAP) with 1.7 times speed up in comparison with the baseline system.
문종필,강금춘,권진경,이수장,이종남,Moon, Jong Pil,Kang, Geum Choon,Kwon, Jin Kyung,Lee, Su Jang,Lee, Jong Nam 한국농공학회 2014 한국농공학회논문집 Vol.56 No.6
The effects of spot cooling on growing ever-bearing strawberry in hydroponic cultivation during summer by spot cooling system was estimated in plastic greenhouse located in Pyeongchang. The temperature of cooling water was controlled by heat pump and maintained at the range of $15{\sim}20^{\circ}C$. Cooling pipes were installed in root zone and very close to crown. Spot cooling effect was estimated by applying system in three cases which were cooling root zone, crown plus root zone, and crown only. White low density polyethylene pipe in nominal diameter of 16 mm was installed on crown spot, and Stainless steel flexible pipe in nominal diameter of 15A was installed in root zone. Crown and root zone cooling water circulation was continuously performed at flowrates of 300 ~ 600 L/hr all day long. Strawberry yields by test beds were surveyed from Aug. 1 to Sep. 30. The accumulated yield growth rate compared with a control bed of crown cooling bed was 25 % and that of crown plus root zone cooling bed was 25 % and that of root zone cooling bed was 20 %. The temperatures of root spot in root zone cooling was maintained at $18{\sim}23.0^{\circ}C$ and that of crown spot in crown cooling was maintained at $19{\sim}24^{\circ}C$. Also, the temperatures of root spot in crown plus root zone cooling bed was maintained at $17.0{\sim}22.0^{\circ}C$ and that of crown spot was maintained at $19{\sim}25^{\circ}C$.
적외선 열화상 분석을 통한 온실의 열손실 진단 및 평가
문종필,윤남규,이성현,김학주,이수장,김영화,Moon, Jong-Pil,Yun, Nam-Kyu,Lee, Sung-Hyoun,Kim, Hak-Joo,Lee, Su-Jang,Kim, Young-Hwa 한국농공학회 2010 한국농공학회논문집 Vol.52 No.2
Unlike Urban building, horticultural facilities has a lot of heat loss through plastic or glass covering material which could be much influential to growing plant and consuming energy for heating greenhouse. In many cases, heat loss from a break of cover, a gap of joint sealing, the entrance to greenhouse and windows for ventilation are the main factors considered in calculating the heating load for horticultural facilities. however the normal observation through human eye and digital camera could not recognize where the heat loss occurred. but the infrared thermal image camera with detecting thermal difference could be very effective for noticing heat loss by analyzing infrared thermal image. In this study, greenhouse structure, covering material, internal and external provisions for Horticultural facilities were surveyed in different sites and Infrared thermal camera shooting and image analysis were performed for auditing heat loss from cultivation facilities The results from this study were that unexpected heat loss had been noticed in 7 representative cases of greenhouse such as side wall covered with single or double plastic, and the joint of horizontal thermal curtain, roof without horizontal thermal curtain, entrance to greenhouse, windows for ventilation. the most important factors for keeping heat energy were whether the horizontal thermal curtain with multifold thermal material was installed or not. The internal or external covering using multifold thermal curtain proved to be the most effective ways to keep heat energy from losing through heat transmission, heat radiation. from inside to outside the horticultural facilities.
GEOWEPP 모형을 이용한 고랭지 경사지밭 소유역의 토양유실 저감방안
문종필,김태철,이성현,권진경,이수장,임경재,Moon, Jong-Pil,Kim, Tai-Cheol,Lee, Sung-Hyoun,Kwon, Jin-Kyung,Lee, Su-Jang,Lim, Kyoung-Jae 한국농공학회 2010 한국농공학회논문집 Vol.52 No.6
This study was performed to suggest a soil loss reduction skill through estimating soil erosion from a small watershed including each type of sloping agriland by using GEOWEPP model. Experimental watershed at Gangwon province was selected for very typical sloping fields of highland agriculture in Alpine area. Runoff discharge and sediment load, hourly rainfall amount occurred during storm event were gauged, and weather data were obtained from Daegwallyeong meteorological station. The results of GEOWEPP model estimation showed that relative error values for total runoff discharge and sediment load were 3 %, -14.5 % respectively. Based on the result, soil erosion and waterway path map for each hillslope were made to select target hillslope. Several hillslopes of severe soil erosion were analyezed and then the optimal vegetative filter strip construction width and waterway path to plant grass were decided by using GEOWEPP Model.
농산물산지유통센터 작업장의 냉방 설계를 위한 CFD 시뮬레이션 적용
권진경(Jin Kyung Kwon),이성현(Sung Hyun Lee),문종필(Jong Pil Moon),이수장(Su Jang Lee),김경원(Keyong Won Kim) (사)한국생물환경조절학회 2010 생물환경조절학회지 Vol.19 No.4
수집 농산물의 세척, 선별, 포장 직업 등이 이루어지는 APC 작업장은 하절기에 작업자들이 고온의 환경에 노출되므로 작업환경 개선을 위한 냉방공조가 요구되고 있다. 기존의 전체 냉방 공조방식은 과도한 유지비로 인한 운용상의 어려움이 발생하고 있으므로 설비비 및 운용비가 상대적으로 저렴한 시스템을 적용할 필요가 있다. 본 연구에서는 하절기 APC 작업공간의 효율적 냉방을 위한 냉방시스템 설계의 기초 연구로써 CFD를 기반으로 하여 양압식 및 음압식 팬 앤 패드 시스템과 국소냉방 시스템에 대해 열유동 수치해석을 수행하여 각각의 냉방효과를 예측하였다. 그 결과, 음압식 팬 앤 패드 시스템은 고온 외기의 과도한 유입으로 인해 패드 하류의 일부 영역을 제외한 대부분의 작업영역에서 상대적으로 고온의 온도 분포를 보였으며 기류의 유속분포 역시 낮게 나타나 APC 냉방시스템으로 부적합한 것으로 판단되었다. 양압식 팬 앤 패드 시스템은 작업장의 중심부 및 각 작업영역에 비교적 균일한 저온환경을 조성하나 작업자 위치별로 기류의 유속편차가 크게 나타났다. 국소냉방 시스템의 경우 각 작업자 위치의 상부에서 냉기류가 공급되는 방식이므로 팬 앤 패드 시스템에 비해 작업자 위치에서의 온도분포와 기류 유속분포가 상대적으로 균일하게 나타났다. 양압식 팬 앤 패드 시스템은 냉방기를 사용하는 기존의 공조방식에 비해 설비비 및 유지비가 저렴하나, 실제 APC 작업장의 냉방공조에 적용시에는 팬 소음, 고습환경이 선별기 등 장비에 미치는 영향, 용수공급 및 패드교체 등을 고려하여 보다 신중한 검토가 요구된다. Cooling air-conditioning of APC (Agricultural Products processing Center) workplace is important to improve the working environment in the summer season. As existing cooling systems for air-conditioning of whole workplace are inefficient because of their high equipment operating costs, relatively inexpensive cooling system is required. The objectives of this study were to simulate the thermal flow fields in APC workplace having the positive and negative pressure type fan and pad systems and spot cooling system by using CFD software (FLUENT, 6.2) and estimate the cooling effectiveness of respective cooling systems. The results showed that the negative pressure type fan and pad system was inappropriate for the present APC workplace because of excessive outside air influx from open gateway and the positive pressure type fan and pad system created relatively low temperature field but non-uniform velocity field at worker positions. The spot cooling system could supply cool air to worker positions with relatively constant air velocity and temperature.
전종길 ( Jeon Jong-gil ),이상봉 ( Lee Sang-bong ),이수장 ( Lee Su-jang ),문종필 ( Mun Jong-pil ),김민영 ( Kim Min-young ),김영화 ( Kim Young-hwa ) 한국농공학회 2008 한국농공학회 학술대회초록집 Vol.2008 No.-
This study was carried out to select a suitable improver for underdrain to stably produce crops in a paddy area. Talk, small pumice stone, heated clay, coating chaff and chaff were considered based on unit price, specific gravity and availability. In this study, a total of 19 improvers were selected and compared to choose the best improver for an underdrain. The findings in this study are: 1) a change of soil moisture after rainfall showed that Talk was superior to de-water from soil; and 2) the lowest average ground water level was observed from an underdrain filling up with heated clay, followed by small pumice stone, Talk, coating chaff and chaff. This indicates that the performance of coating chaff was superior and its economic efficiency and drainage effect.
문종필,이성현,권진경,강연구,유영선,이수장,Moon, Jong-Pil,Lee, Sung-Hyoun,Kwon, Jin-Kyung,Kang, Youn-Ku,Ryou, Young-Sun,Lee, Su-Jang 한국농공학회 2011 한국농공학회논문집 Vol.53 No.6
In order to heat greenhouse nearby river channel, riverbank filtration water source heat pump was developed for getting plenty of heat flux from geothermal energy. Recharging well, thermal storage tank with separating insulation plate and filtering tank for eliminating iron, manganese were mainly developed for making the coefficient of performance (COP) of heat pump higher. Heating system using riverbank filtration water source heat pump was installed at a paprika greenhouse in the Jinju region where a single fold of vinyl cover and 2 layers of horizontal thermal curtain were installed as a part of temperature keeping and heat insulation with a greenhouse area of 3,185 $m^2$. 320,000 kcal/h was supplied for performing a site application tests. A greenhouse heating test was performed from Feb. 1, 2011 to Apr. 30, 2011. As the result of that, COPh of the heat pump was measured in the range of 4.0~4.5, while COPS of the system was represented as 2.9~3.3. COP measured of the heat pump was very good and well responded to indoor heating temperature of the environment control system of a greenhouse.