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박용배 ( Yong Bae Park ) 한국산림과학회 2012 한국산림과학회지 Vol.101 No.1
The purpose of this study is to give ROI informations about management status and investment returns to someone who will newly cultivate lycium chinese miller or expand area of its cultivation, In this study, IRR, B/C Ratio and NPV is used for ROI analysis, We basically surveyed fifty two among Lycium Chinese Miller cultivation farmhouses in chief producing districts Chungnam Chungyang, Jeonnam Jindo in Korea from May until September in 2009. Hence, this study surveyed these farmers about production cost, management cost, input labors and materials, land price and etc. by working process to calculate production and operation cost. As the result of farm survey, average selling price of Lycium Chinese Miller is 15,000 won per kg at locals for five years. However, when 3% discount rate is applied, the result of the analysis is B/C Ratios 0.89, which shows unprofitable. Therefore, it is a possible baseline that price of Lycium Chinese Miller is at least 16,800 won per kg with 3.00% IRR and B/C Ratio is 1.00. It could be profitable with about 21.75% income ratio when price of Lycium Chinese Miller is 16,800 won per kg.
박용배(Yong Bae Park),윤여창(Yeo Chang Youn) 한국산림과학회 2001 한국산림과학회지 Vol.90 No.1
The objectives of this study were to explain market structures of logs imported to Korea from U.S.A., New Zealand. Chile. The demand for imported logs is modeled as a function of output of wood manufacturing in Korea and log prices of competing suppliers. It is hypothesized that the quantity of log impaled in a period is determined by its own and competing prices and the output of wood corresponding manufacturing sector in the current period. Import demand functions of logs imported to Korea from U.S.A., New Zealand and Chile were estimated by SURE(Seemingly Unrelated Regression Equations). Elasticities of amounts of logs imported to Korea from U.S.A., New Zealand and Chile with respect to price of imported log from U.S.A. were -2.88, 1.36 and 3.17, respectively. Elasticities of amounts of logs imported to Korea from U.S.A., New Zealand and Chile with respect to price of imported log from New Zealand were 0.71, -1.65 and 1.44, respectively, Elasticities of amounts of logs imported to Korea from U.S.A., New Zealand and Chile with respect to price of imported log from Chile was -2.88. 1.36 and 3.l7.
박용배(Yong-Bae Park),강정복(Jeong-Bok Kang),김중범(Jung-Beom Kim),김종찬(Jong-Chan Kim) 대한환경위생공학회 2005 대한환경위생공학회지 Vol.20 No.1
On the purpose of epidemiological survey relate to food poisoning, a total of 114 samples of different salads collected from fast food Restaurants in Gyeonggi-do were for the presence of pathogenic microorganisms. Microbial assessment of salads revealed that TPC(l.1×10~8.4×10^5 CFU/g) and coliforms(O~5.4×10₄ CFU/g) exceeded the standards by Solberg et al.(TPC:10^5 CFU/g, coliforms:10² CFU/g).<br/> Two pathogenic bacteria were isolated from salad samples, and identified by biochemical methods, including API identification systems.<br/> Isolates from PALCAM agar and MYP agar media were in 98.6, 99.8% agreements with Listeria monocytogenes, Bacillus cereus at the species level, respectively. All 7 strains of Bacillus cereus isolates produced enterotoxin as revealed with CRET-RPLA,
산지약용식물자원의 재배 투자 수익성 분석 -오미자 노지재배-
박용배 ( Yong Bae Park ),김재성 ( Jae Sung Kim ),김기동 ( Ki Dong Kim ) 한국산림과학회 2010 한국산림과학회지 Vol.99 No.6
This study is to give informations about management Situations and investment returns to someone who will newly cultivate schizandra or expand area of culture. This study used IRR, B/C Ratio and NPV for beneficial analysis. We surveyed fifty one among schizandra cultivation farmhouses in chief producing districts Gangwon Inje, Gyeongbuk Munkyung, Kyungnam Sancheong and Jeonnam Whasoon in Korea from May till September in 2009. So this study surveyed about inputted labors and materials, land price and etc. by working process to calculate producing and operating cost. Fruits of schizandra are sold from 5,000 won to 6,000 won per kg at locals. And IRR(Internal Rate of Returns), B/C Ratio and incomes ratio is calculated by three senarios 5,000 won, 5,500 won and 6,000 won per kg at locals. Discount rate is 3.00%. As the result of this study IRRs are -16.00%, -6.91%, 0.40% one after another and B/C Ratios are 0.81, 0.89, 0.97 one after another. And schizandra cultivation isn`t profitable. When price of schizandra fruits is 6,200 won per kg, IRR is 3.00% and B/C Ratio is 1.00. Therefore, if price of schizandra fruits is over 6,200 won per kg, we judge that it is profitable. And income ratio is 23.9% on 6,200 won per kg.
직사각형 개구면이 있는 함체 내부에 위치한 PCB로부터의 복사 방출 예측 기법의 정확도 연구
박용배(Yong Bae Park),정기범(Ki-Bum Jung),정연춘(Yeon-Choon Chung) 한국전자파학회 2008 한국전자파학회논문지 Vol.19 No.9
본 논문에서는 직사각형 개구면이 있는 함체 내부에 위치한 PCB로부터의 복사 방출 예측 이론을 제안한다. PCB Scanner를 이용하여 PCB로부터의 근접장을 측정하여 등가 전원으로 모델링하고, 등가 전원에 의한 전자기장을 계산한다. 함체 내부의 등가 전원을 그린 함수를 이용하여 표현하고, 함체 외부의 전자기장은 푸리에 변환을 이용하여 표현한다. 모드 정합법을 이용하여 개구면에서의 전자기장을 계산하고, 표면 등가 원리 및 영상정리를 이용하여 OATS(Open Area Test Site) 환경에서의 복사 방출을 계산한다. 계산 결과를 측정치와 비교하여, 복사 방출 예측 이론의 정확성을 확인한다. In this paper, we propose the prediction algorithm of radiation emission from the PCB in an enclosure with a rectangular aperture. PCB scanner is used to measure the near field, which is substituted with an equivalent electric dipole source. Green function and Fourier transform are utilized to represent the electromagnetic fields within and outside the enclosure, respectively. The radiation emission is estimated by using the mode matching technique and surface equivalent theorem. The theoretical results are compared with the measurement to check the accuracy of our analysis.
논문 : 계획되지 않은 햅틱 경험이 상품의 가치 평가에 미치는 영향
박용배(주저자) ( Yong Bae Park ),박주화(공동저자) ( JuHwa Park ),조광수(교신저자) ( KwanSgu Cho ) 디자인융복합학회 2015 디자인융복합연구 Vol.14 No.5
사람들은 상품에 대한 선호 결정과 가치 평가를 위해 제품을 직접 만져보기를 원한다. 일반적으로 사람들은 경험되는 햅틱 경험이 제품의 속성에 의해이루어지고 있음을 가정하고, 계획적으로 선호와 판단의 근거로 사용한다. 하지만 경험되는 햅틱 경험이 제품의 속성에 의해 이루어지지 않았음에도, 즉 비계획적인 햅틱 경험이 제품의 선호와 가치 평가에 영향을 줄 수 있음을 시사하는 연구가 제안되고 있다 (Ackerman, Nocera, & Bargh, 2010). 본 연구는 이러한 비계획적/우연적 햅틱 경험이 (1) 사용자의 인지적 경향성을 변화시키는지 (2) 햅틱 경험의 원인에 대한 오귀인을 일으키는지, 두가설을 제안하고 경험적으로 검증하였다. 실험 참여자는 태블릿 컴퓨터 화면에 제시되는 상품을 보고 부드러운 소재의 제품군과 딱딱한 소재의 제품군의 최대 지불 용이 가격을 책정하였다. 실험 결과 비계획적 햅틱 경험은 사용자의 인지적 경향성을 변화시킴으로서 상품의 가치 평가에 영향을 주었다. 모바일 디바이스의 커버, 오프라인 커머스 환경에서 제품의 포장재, 판 촉물, 메뉴판 등 사용자들과 직접적으로 접촉하는 다양한 상황에서 발생하는 비계획적 햅틱 경험의 활용가능성을 논의하였다. People often use haptic experience as a basis for their preference decisions and value judgments, assuming that haptic experience with a product results from the properties of the products. However, research has suggested that unplanned haptic experience, which does not arise from the properties of the product itself, can also influence people’s preference and value evaluation (Ackerman, Nocera, & Bargh, 2010). In this study, in order to verify (1) if such unplanned or accidental haptic experience changes user’s cognitive tendency and (2) if accidental haptic experience leads to misattribution of the cause of haptic experience, two hypotheses were suggested and empirically investigated. Participants of the experiment were exposed to certain products on a display of a tablet PC and asked to decide on the maximum price they were willing to pay for each product. The products displayed on the screen were made up of either soft material or hard material. Results of the experiment revealed that accidental haptic experience had an effect on participants’ value evaluation of products via altering their cognitive inclinations. Possible applicability of accidental haptic experiences that occur in various situations were discussed.