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      • KCI등재

        Poisson-Type 기동표적이 시스템 모델링 오류에 대한 추적 필터의 성능 해석

        오상병,김상진,임상석 한국항행학회 2003 韓國航行學會論文誌 Vol.7 No.2

        근래에 Poisson 형의 점프 프로세스를 이용하여 표적의 기동 운동을 모델링하고 이것을 이용한 반복형 최소분산 선형 필터가 제안되었다. 이 필터에서는 기동 표적의 모델링에 사용한 점프의 상태천이 파라미터가 미리부터 필터에 알려져 있다고 가정하였는데 실제는 이것을 모르는 경우가 많다. 본 논문에서는 이러한 기동 추적 과정에 수반되는 모델링 오류가 제안된 추적필터의 성능에 어떤 영향을 미치는지 고려한다. 정상적인 분석을 위해서 상태천이 파라미터를 실제와 다른 값을 사용하고, Monte-Carlo 시뮬레이션을 통해 필터의 성능을 해석한다. Recently Lim has proposed a linear, recursive, unbiased minimum variance filter for a maneuvering target based on the maneuver dynamics modeled as a jump process of Poisson-type. In the proposed filter it was assumed that the state transition parameters of the jump used for target maneuver modeling are a priori known to the filter. However, in most cases they are not known in practice. In this paper, we consider the influence of system (target) modeling error on the performance of the proposed tracking filter arising from the maneuver tracking. For qualitative analysis Monte-Carlo simulations are carried out against employing the maneuver model with different state transition parameters from the actual values.

      • KCI등재

        플랫폼 혁신성과 신뢰성이 플랫폼 성과에 미치는 영향에 관한 연구 - 한국농수산식품유통공사 플랫폼 대상으로

        상병,김동현,박찬욱 한국인터넷전자상거래학회 2023 인터넷전자상거래연구 Vol.23 No.4

        This study aimed to understand the impact of innovation and trust of the aT (Korea Agro-Fisheries & Food Trade Corporation) agri-food online platform on the activation of service and the switching of service. To gather data for this study, 160 questionnaires were distributed to consumers who had experience purchasing from the aT agricultural food online platform, and 150 of these responses were used for the final analysis. The findings of the study revealed a significant effect of the innovation and trust of the aT agricultural food online platform service on the satisfaction of its users. Furthermore, Hypotheses 2, 6, 7, and 8 were not supported, suggesting that a higher perception of innovation of the aT agricultural online platform may not affect the activation of service and the switching of service, and did not mediate through service satisfaction and cost burden. Based on the stable business foundation for the long-standing agricultural distribution sector in the platform role and function of the Agricultural and Fishery Cyber Exchange, a distribution public corporation in the agricultural sector, it was found that there is a positive and active intention to use the service. The implications of this study are to secure transactions centered on MD (Merchandiser) for matching transactions in the private sector, and to convert the B2B (Posmall) platform service, which has maintained a passive online platform through intermediary transaction activities, from a closed-mall-based business structure to an active open-mall.

      • 음식물쓰레기와 폐활성 슬러지를 이용한 생물학적 수소생산

        상병인(Sang, Byeong-In),이윤지(Lee, Yun-Ji),김동임(Kim, Dong-Im),김동건(Kim, Dong-Geon),김지성(Kim, Ji-Seong),유명진(Yu, Myeong-Jin),박대원(Park, Dae-Won) 한국신재생에너지학회 2005 한국신재생에너지학회 학술대회논문집 Vol.2005 No.11

        Anaerobic fermentation of food waste (FW) and waste activated sludge (WAS) for hydrogen production was performed in CSTR (Continuous Stirred tank reactor) under various HRTs and volumetric mixing ratio (V/V) of two substrates, FW and WAS. The specific hydrogen production potential of FW was higher than that of WAS. However, pH drop in the CSTR for hydrogen production from FW was higher than that from WAS. The maintenance of desired pH during fermentative hydrogen production is regarded as the most important operation parameter for the stable hydrogen production. Therefore, when the potential of hydrogen production from FW and better buffer capacity of WAS, the proper mixture of FW and WAS for fermentative hydrogen production were considered as a useful complementary substrate. The maximum yield of specific hydrogen production, 140 mL/g VSS, was found at HRT of 2 day and the volumetric mixing ratio of 20:80 (WAS : FW). The spatial distribution of hydrogen producing bacteria was observed in anaerobic fermentative reactor using fluorescent in situ hybridization (FISH) method.

      • 한국재래닭의 산육 및 산란형질에 대한 세대의 효과 추정

        상병,최철환,김학규,나재천,연성흠,김종대,진현주,조창연,김시동,이상진 한국가금학회 2006 한국가금학회 정기총회 및 학술발표회 Vol.23 No.-

        한국재래닭의 중요 경제형질에 대한 세대별 최소자 승평균치는 150 및 270일령 체중에서 3세대에서 각각 1,599.74 및 1,905.01g으로 가장 무거웠고, 시산일령은 4세대에서 143.31일로 가장 빨랐으며, 시산난중은 7세대에 35.68g, 270일령 난중은 5세대에 50.42g으로 가장 무거웠고, 270일령 산란수는 6세대에 78.53개로 가장 많았으며 대체로 세대가 증가할수록 체중과 시산일령은 줄어들고 난중과 산란수는 증가하는 방향으로 개량되었다. The significant generation effects were investigated in all the major economic traits in Korean native chicken. The highest L.S means of the body weights at 150 and 270 days of age were observed in generation three are 1,599.74 and 1,905.01g. The earliest L.S mean of the age at first egg was 143.31 days in 4th generation. The heaviest L.S means of egg weights at the first egg and 270 days of age were observed in 7th and 5th generation at 35.6g and 50.42g. The L.S mean of the largest number of egg production was 78.53 eggs in 6th generation. In general, light body weight, short time for the age at first egg, heavy egg weight and large number of egg production were observed as the generation increased.

      • KCI등재

        한국재래닭의 경제 형질에 미치는 계통 및 환경의 효과

        상병,최철환,김학규,김시동,장병귀,나재천,유동조,이상진,상병,이준헌,Sang, Byeong-Don,Choi, Cheol-Hwan,Kim, Hak-Gyu,Kim, Si-Dong,Jang, Byeong-Gwi,Na, Jae-Cheon,Yu, Dong-Jo,Lee, Sang-Jin,Lee, Jun-Heon 한국가금학회 2003 韓國家禽學會誌 Vol.30 No.4

        본 연구는 한국재래닭의 효율적인 유전능력의 개량을 위한 육종목표의 설정과 선발을 수행하는데 필요한 자료를 얻고자 축산기술연구소에서 1995년부터 2001년까지 7세대에 걸쳐 능력검정된 11,583수에 대한 자료를 이용하여 주요경제형질의 체중, 시산일령, 난중 및 산란수에 대한 평균능력과 계통 및 출생세대의 효과를 추정한 결과를 요약하면 다음과 같다. 150일령 체중은 적갈색, 황갈색, 회갈색, 흑색 및 백색계통에서 각각 1,557.7, 1,471.7, 1,393.5, 1591.2 및 1,545.6g이었으며, 변이계수는 9.65~13.79%이었고, 270일령 체중은 각각 1.880.8, 1,738.2, 1,694.9, 1,901.0 및 1,763.6g이었으며, 변이계수는 13.29~15.16%로 150일령 체중에 비해 다소 높은 편이었다. 산란능력은 적갈색, 황갈색, 회갈색, 흑색 및 백색계통에서 시산일령은 각각 150.0, 148.3, 149.5, 152,8 및 147.7일이었고, 변이계수는 13.54~15.27%로 다소 높은 편이었으며, 270일령 난중은 각각 50.8, 49.2, 49.1, 50.0 및 47.8g이었고, 변이계수는 6.93~7.36%로 낮았으며, 270일령 산란수는 77.0, 79.3, 77.3, 73.7 및 75.4개이었고, 변이계수는 29.98~36.99%로 아주 높은 수치이었다. 재래닭의 주요 경제형질에 대한 계통의 효과는 모든 형질에서 유의적인 차이가 인정되었으며, 계통별 최소자승 평균치는 150일령 및 270일령 체중에서 흑색계통이 각각 1,594.38 및 1,911.57g으로 가장 무거웠고, 시산일령은 백색계통이 146.88일로 가장 빨랐으며, 시산난중 및 270일령 난중은 적갈색 계통이 각각 32.20 및 50.74g으로 가장 무거웠고, 산란수는 황갈색 계통이 79.50개로 가장 많았다. 또한 주요 경제형질에 대한 세대의 효과는 모든 형질에서 통계적인 유의성이 인정되었으며, 세대별 최소자승 평균치는 150일령 및 270일령 체중에서 3세대에서 각각 1,599.74 및 1,905.01g으로 가장 무거웠고, 시산일령은 4세대에서 143.31일로 가장 빨랐으며, 시산난중은 7세대에 35.68g, 270일령 난중은 5세대에 50.42g으로 가장 무거웠고, 270일령 산란수는 6세대에서 78.53개로 가장 많았으며, 대체로 세대가 증가할수록 체중과 시산일령은 줄어들고, 난중과 산란수는 증가하는 방향으로 개량되었다. This study was carried out to estimate the effects of strain and generation on the major production performances of Korean native chicken. The data were collected from 11,583 birds of the 7 generations over the year 1995 through 2001 at National Livestock Research Institute, Korea. Results obtained were summarized as follows: The body weights at 150 and 270 days of age were 1,557.7 and 1880.7, 1,471.7 and 1,738.2, 1,393.5 and 1,694.9, 1,591.2 and 1,910.0, 1,545.6 and 1,763.6g in Red Brown, Yellow Brown, Gray Brown, Black, and White strains, respectively. The Coefficient of Variations (CVs) of the body weights at 150 and 270 days of age were 9.65~13.79% and 13.29~15.16%. The ages at first egg were 150.0, 148.3, 149.5, 152,8 and 147.7 days in Red Brown, Yellow Brown, Gray Brown, Black and White strains, respectively and the CVs were between 9.33 and 10.11%. The egg weights at the first egg and 270 days of age were 33.2 and 50.8, 32.2 and 49.2, 32.2 and 49.1, 33.0 and 50.0, 30.7 and 47.8g respectively. The CVs of the egg weights of the first egg and at 270 days of age were 13.54~15.27% and 6.93~7.36%. The numbers of eggs produced by 270 days of age were 77.0, 79.3, 77.3, 73,7, 75.4, respectively, and observed CVs were between 29.98~36.99%. The significant strain effects were investigated in all the major economic traits in Korean native chicken. The significant strain effects were investigated in all the major economic traits in Korean native chicken. The highest least square (LS) means of the body weights at 150 and 270 days of age were observed in Black strain as 1,594.38 and 1,911.57g. The earliest LS mean of the ages at first egg was 146.88days in White strain. The heaviest LS means of egg weights at the first egg and 270 days of age were observed in Red Brown strain as 32.20 and 50.74g. The LS mean of the largest number of egg production was 79.50 eggs in Yellow Brown strain. Also, The significant generation effects were investigated in all the major economic traits. The highest LS means of the body weights at 150 and 270 days of age were observed in the generation 3 as 1,599.74 and 1,905.01g. The earliest LS mean of the age at first egg was 143.31 days in 4th generation. The heaviest LS means of egg weights at the first egg and 270 days of age were observed in 7th and 5th generation as 35.68 and 50.42g. The LS means of the largest number of egg production was 78.53 eggs in generation 6. In general, light body weight, short time for the age at first egg, heavy egg weight, and large number of egg production were observed as the generation proceeded.

      • KCI등재후보

        한국재래닭의 경제 형질에 대한 육종가 추정

        상병,유동조,최철환,김학규,김시동,이준헌,장병귀,나재천,이상진,상병 한국가금학회 2005 韓國家禽學會誌 Vol.32 No.4

        This study was carried out to evaluate the breeding values for economic traits in Korean native chicken on the basis of 11,583 birds of record along 7 generations collected from 1995 to 2001 at National Livestock Research Institute, Korea. The results obtained are summarized as follows : The breeding value estimates of the body weights at 150 and 270 days in Dark Brown, Light Brown, Gray Brown, Black and White strains were -16.563~-0.474 and -18.836~21.700, -14.714~9.272 and -23.025~11.297, -25.186~12.953 and -28.368~18.156, -15.549~6.329 and -18.264~4.963, -10.708~20.284 and -25.112~10.132g, respectively.The breeding value estimates of the ages at first egg in Dark Brown, Light Brown, Gray Brown, Black and White strains were -1.236~0.047, -1.509~0.298, -1.362~0.114, -1.436~0.199 and -1.385~0.718, respectively.The breeding value estimates of the egg weight at first egg and at 270 days were -0.105~0.075 and -0.120~0.398, -0.109~0.042 and -0.205~0.173, -0.166~0.084 and -0.256~0.091, -0.119~0.066 and -0.051~0.132, -0.112~0.027 and -0.070~0.101g, respectively.The breeding value estimates of the egg production to 270 days in Dark Brown, Light Brown, Gray Brown, Black and White strains were 0.298~1.807, -0.049~1.146, -0.396~1.125, -1.206~1.173 and -0.474~2.641, respectively. 본 연구는 축산연구소에서 1995년부터 2001년까지 7세대에 걸쳐 능력 검정된 11,583수에 대한 자료를 이용하여 한국재래닭에 대한 경제형질의 육종가를 추정한 바 그 결과를 요약하면 다음과 같다. 육종가의 추정치는 적갈색, 황갈색, 회갈색, 흑색 및 백색계통의 150일령 체중에서 각각 -16.563~-0.474, -14.714~ 9.272, -25.186~12.953, -15.549~6.329 및 -10.708~20.284g 이었고, 270일령 체중에서 각각 -18.836~21.700, -23.025~ 11.297, -28.368~18.156, -18.264~14.963 및 -25.112~10.132g 이었다. 산란능력의 육종가 추정치는 적갈색, 황갈색, 회갈색, 흑색 및 백색 계통의 시산일령에서 각각 -1.236~0.047, -1.509~ 0.298, -1.362~0.114, -1.436~0.199 및 -1.385~0.718 일 이었고, 시산난중은 각각 -0.105~0.075, 0.109~0.042, -0.166~ 0.084, -0.119~0.066 및 -0.112~0.027g 이었고, 270일령 난중은 각각 -0.120~0.398, -0.205~0.173, -0.256~0.091, -0.051~ 0.132 및 -0.070~0.101g 이었으며, 270일령 산란수는 각각 0.298~ 1.807, -0.049~1.146, -0.396~1.125, -1.206~1.173 및 -0.474~ 2.641개 이었다.

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