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허장식 ( Jang Sig Heo ) 한국감정평가학회 2007 감정평가학논집 Vol.6 No.2
This study tried to analyze the factors determining land price in golf course by type. The object of this study is all golf courses opened nationwide and is limited to microscopic analysis which mainly concentrates on influences of site forces on market value. This study divided into two groups, private courses and daily fee courses. Statistical analysis was conducted by using hedonic price function. This study used DPI(distance-population index) which is the sum of numbers result from division of the population of cities nationwide by distance(km) from each city to golf courses. As a result of analysis, significant factors selected are as follows ; DPI, whether the golf course is located within the metropolitan area or not, zoning, rate of development area, total length of golf course, greens fee for non-members, annual sales, service years after completion for private courses ; DPI, whether the golf course is located within the metropolitan area or not, zoning, total length of golf course, greens fee for non-members, annual sales for daily fee courses. DPI was a significant common factor on all type of models at 1% level of significance.
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과립형성 및 성형방법에 따른 SOFC 음극의 미세구조 및 특성
허장원,이종호,황진하,문주호,Heo, Jang-Won,Lee, Jong-Ho,Hwang, Jin-Ha,Moon, Joo-Ho 한국전기화학회 2003 한국전기화학회지 Vol.6 No.1
It is well known that the anode substrate of anode-supported type SOFC should have high electrical conductivity and high gas permeability to minimize the polarization loss of the cell performance during operation. In this study, we made anode substrates of SOFC with two different methods, which gave different anode microstructures, especially different pore structures with each other. We performed electrical and microstructural characterization of Ni/YSZ cermet anode via extensive measurements of its electrical conductivity and gas permeability combined with adequate image analysis based on quantitative stereological theory
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허장현 ( Jang Hyun Hur ),김자영 ( Ja Young Kim ),김종걸 ( Jong Geol Kim ),허성전 ( Seong Jin Heo ),정슬아 ( Seul Ah Jung ) 강원대학교 농업생명과학연구원 2010 농업생명환경연구 Vol.22 No.-
This study was investigated to determine the residual amounts of acephate and its metabolite methamidophos used to control Myzus persicae and Lipaphis erysimi. The residual amounts of acephate and methamidophos in Korean cabbage ranged from 0.11 to 4.61 mg kg-1 and 0.10 to 0.63 mg kg-1, respectively. Because the maximum residue limits (MRL) of acephate and methamidophos in the Korean cabbage was 5.0 mg kg-1 and 1.0 mg kg-1, respectively, it can be proposed for these chemicals to apply up to 3 times before 7 day of harvest in Korea. Threshold maximum daily intake(TMDI, estimate daily intake per acceptable daily intake rate (EDI/ADI%)) of acephate were calculated over 129%. This risk assessments shows that the acephate are overused or maximum residue limits (MRL) of crops are too high. So pesticides containing acephate must be controled.
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한국어판 미국 국립안연구센터 시각기능설문지 25의 타당성 및 신뢰도 연구
허장원,윤희성,신재필,문상웅,진희승,곽형우,Jang Won Heo,Hee Seong Yoon,Jae Pil Shin,Sang Woong Moon,Hee Seung Chin,Hyung Woo Kwak 대한안과학회 2010 대한안과학회지 Vol.51 No.10
Purpose: To translate and evaluate the reliability and validity of the Korean version of the National Eye Institute Visual Functioning Questionnaire-25 (NEI-VFQ-25). Methods: Two bilingual ophthalmologists independently translated the original English version of the NEI-VFQ-25 into written Korean. A panel of the Korean Retina Society reviewed the translations to form a single reconciled forward translation of the Korean version of the NEI-VFQ-25. Another ophthalmologist back-translated this first draft into English. Both the first draft and back-translated draft were edited by a professional translator. To evaluate the correlation and validity, results between the original NEI-VFQ-25 and the Korean version, completed by the bilingual participants, were compared. Results: The Korean version of the National Eye Institute Visual Functioning Questionnaire-25 was developed by translation, back-translation, and expert supervision. Results from 23 bilingual participants between the original NEI-VFQ-25 and the Korean version were compared and showed statistically significant correlation, with a Spearman’s correlation coefficient of 0.4 or greater. The Kolmogorov-Smirnov test results showed no statistically significant differences between the two questionnaires. Conclusions: Translation and validation of the Korean version of the NEI-VFQ-25 was achieved. J Korean Ophthalmol Soc 2010;51(10):1354-1367
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