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박찬은(Chan-Eun Park),김윤숙(Yun-Sook Kim,),박동준(Dong-June Park),박기재(Ki-Jai Park),김범근(Bum-Keun Kim) 한국식품과학회 2011 한국식품과학회지 Vol.43 No.4
본 연구에서는 시중에서 유통되고 있는 산지별 품종이 다른 7종(강원 오대, 경기 고시히카리, 충북 추청, 충남 삼광, 경북 일반계, 전북 신동진, 전남 히토메보레)의 쌀에 대하여 호화 및 관능적 특성을 조사하였다. 수분함량은 충북 추청이 15.80%로 적정 수분함량인 것으로 나타났으며, 조단백질 함량은 경기고시히카리가 6.75%로 고급 벼에 해당되는 것을 알 수 있었다. 유리당 분석 결과 glucose는 충북 추청이 0.24%로 가장 높은 수치를 보였으며, fructose는 충북 추청이 0.02%로, maltose는 0.03-0.25%로 나타났다. 백도는 모든 시료가 38 이상의 높은 백도를 보였으며, 외형적 특성 결과 완전립은 강원 오대를 제외한 나머지 품종의 경우 90-95.8% 이상으로 매우 품질이 우수한 특품인 것으로 나타났다. RVA 측정결과, 호화온도는 충북 추청이 88.10로 가장 높게 측정되었으며, 최고점도는 경기 고시히카리가 208.00 RVU로 가장 높은 수치를 보였다. Breakdown의 경우 강원 오대가 43.64RVU로 가장 낮게 측정되어 가공 시 안정도가 높은 것으로 나타났다. Setback은 충북 추청이 109.39 RVU로 가장 높은 수치를 보여 노화성이 높은 것으로 나타났다. 조직감 특성 결과 경도(hardness)는 경기 고시히카리가 가장 낮은 수치를 보였으며, 부착성(adhesiveness)은 전남 히토메보레를 제외한 나머지 품종들은 유의적인 차이를 보이지 않았다. 외관의 경우 윤기정도(glossiness)는 경기 고시히카리가 가장 높은 값을 보였으며, 색(color)은 충남 삼광이 가장 낮게 나타나 색이 가장 흰색에 가깝다고 측정되었다. 이취(off-flavor)는 경기 고시히카리가 가장 적은 것으로 나타났고, 밥맛(rice taste)은 경기 고시히카리가 밥맛이 가장 좋은 것으로 나타났다. 거칠은 정도(roughness)는 경기 고시히카리가 가장 낮게 나타나 가장 부드러운 것으로 나타났다. 경도(hardness), 탄력성(springiness), 부착성(adhesiveness)의 경우 모든 품종 유의 적인 차이는 보이지 않았다. 관능검사에서 강도특성과 선호도 결과, 경기 고시히카리가 전반적인 기호도, 외관, 향, 밥맛 및 조직감이 가장 높게 나타나 7가지 품종 중에서 가장 우수한 것으로 나타났다. This study was conducted to investigate the pasting and sensory properties of different commercial rice cultivars. All samples had adequate moisture content, and Gyeonggi Kosihikari had the lowest protein content (6.75%). Apparent quality of head rice ranged from 85.63 to 98.70% and amylose content was 21.51-26.54%. In a rapid visco analyzer examination, pasting temperature of Gyeonggi Kosihikari was the lowest (84.87). Breakdown of Gangwon Oade (43.64 RVU) was lower that of others, indicating the highest pasting stability. The setback of Jeonam Hitomebore was the lowest (81.56 RVU), suggesting slow deterioration. A texture analysis test showed that Gyeonggi Koshihikari had the lowest hardness and Chungnam Samgwang had the highest adhesiveness. Gyeonggi Koshihikari had the highest sensory scores for appearance, flavor, taste, texture and overall acceptability. These results indicate that Gyeonggi Koshihikari is the most adequate rice product among cultivars.
볼테라 시리즈 입력을 이용한 냉연 산세 라인 산농도 모델 추정
박찬은(Chan Eun Park),송주만(Ju-man Song),박태수(Tae Su Park),노일환(Il-Hwan Noh),박형국(Hyoung-Kuk Park),최승갑(Seung Gab Choi),박부견(PooGyeon Park) 제어로봇시스템학회 2015 제어·로봇·시스템학회 논문지 Vol.21 No.12
This paper deals with estimating the acid concentration of pickling process using the Volterra inputs. To estimate the acid concentration, the whole pickling process is represented by the grey box model consists of the white box dealing with known system and the black box dealing with unknown system. Because there is a possibility of nonlinear term in the unknown system, the Volterra series are used to estimate the acid concentration. For the white box modeling, the acid tank solution level and concentration equations are used, and for the black box modeling, the acid concentration is estimated using the Volterra Least Mean Squares (LMS) algorithm and Least Squares (LS) algorithm. The LMS algorithm has the advantage of the simple structure and the low computation, and the LS algorithm has the advantage of lowest error. The simulation results compared to the measured data are included.
Distribution System Dynamic State Estimation via Mathematical Model Based Approach
Chan-eun Park(박찬은),In Seok Park(박인석),PooGyeon Park(박부견) 대한전기학회 2019 전기학회논문지 Vol.68 No.7
Recently, some novel researches regarding the state estimation for power distribution system have been focused on the dynamic state estimation algorithm due to trend abrupt changes in the distribution system such as actions of prosumers. The previous works studied the Kalman filter for nonlinear system such as extended Kalman filter, unscented Kalman filter. They assume that the state transient model follows smoothing model of the previous states. However, it is hard to set the smoothing coefficient for the estimated states. Thus, this paper proposes the mathematical model of state transient model of power distribution system. Based on the proposed mathematical model, extended Kalman filter algorithm is adopted for dynamic state estimation. All jacobian matrices for the extended Kalman filter is derived as a function of system states, and the proposed algorithm is verified by using IEEE 15 test bus.
서국(西國) 어촌민가의 마치야 정층(町屋) 형식의 평면특성 - 일본 덕도현(德島縣) 해부정(海部町) 병포 동정(東町)를 중심으로 -
박찬,김정균,Park, Chan,Kim, Jeong-Gyun 한국주거학회 2007 한국주거학회 논문집 Vol.18 No.1
The purpose of this study is to examine the characteristics of the plan of fishing village house in the Shikoku district. The research was carried out by field survey and measurement of the traditional house and street system in Higashimachi area of Tomoura. The results of this study are as follows. The traditional house of Higashimachi area is to be taking the plan of Machiya form that is the residence form of a city without being related a fishing village. And the street system is as orderly comparatively as a city. This is not the thing as that is surprised when we think the fact that Higashimachi area has maintained close relation historically with Kyoto, Osaka, etc. However, as for the house of Higashimachi area, the scale is smaller in comparison with Machiya, there is a fundamental difference in terms of the house for the exclusive use of residence. Machiya is the dual constitution of business space and life space. To it the house of Higashimachi area is doing the unitary constitution. Mise is the original opening device (a kind of the front door fitting) of traditional house of Higashimachi area and has the functions that complement narrow space and of offer community space. Finally, the traditional house in this area is equipped with all the residence functions of necessary minimums, although the scale residence is small. It is said that this is the case of a 'small residence' in a Japanese residence.
사국(四國)산촌의 은거옥(隱居屋)의 특성에 관한 조사연구 -일본 덕도현(德島縣) 동조곡산촌(東祖谷山村) 낙합지구(落合地區)를 중심으로-
박찬,Park Chan 한국주거학회 2006 한국주거학회 논문집 Vol.17 No.4
This research is the survey result of the retirement house in Ochiai area that is a famous as mountain village of Japan. This area is being formed in a steep slope and be arranged the building long a side along the contour line. As for the plan type of a main house 'the middle bedroom three-madori(bay) type' and 'the parallel two madori(bay) type' occupy many. As for in the retirement custom of Ochiai area the independence family style (separation/ separate meal/separate household economy) is a principle and a parents family builds the retirement house and move out. The plan. of the retirement house is two-room type of 'Omote(public room) and Uchi(kitchen and living room)' and agree with the plane prototype 'plan constitution of a necessary minimum' of farmhouse of this area. The reconstruction that the retirement house is remodeled handily with a main home, especially intend the convenience of the life such as a kitchen and toilet has been done. The retirement custom has been succeeded thoroughly until recent years in this area. However, this traditional custom is seeing the end, without there is the successor of a main house with depopulation.
박찬,배동식,Park, Chan,Bae, Dong-Sik 한국재료학회 2016 한국재료학회지 Vol.26 No.5
Nickel powders were prepared under solvothermal condition by precipitation from metal nitrates with aqueous ammonium hydroxide. The powders were obtained at in a temperature range of $190-250^{\circ}C$ for 6h. The morphology and size of nickel powders were studied as a function of reaction temperature. The synthesis of nickel crystalline particles is possible under a solvothermal conditions in ethylene glycol solution. Characterization of the synthesized nickel powders were studied by XRD, SEM(FE-SEM) and TG/DSC. X-ray diffraction analysis of the synthesized powders indicated the formation of nickel structure after reaction. The average crystalline sizes of the synthesized nickel powders were in the range of 200-1000 nm; and the distribution of the powders was broad. The shape of the synthesized nickel particles was almost spherical. The morphology of synthesized nickel powders changed with reaction condition. It was possible to synthesize nickel powders directly in ethylene glycol without reducing agent.