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여러 제형의 발효홍국 어성초를 오리사료첨가제로 적용한 현장연구에서 오리축산경영의 경제성 평가
장우환 ( Woo-whan Jang ),정영호 ( Yung-ho Chung ),최인학 ( In Hag Choi ) 한국환경과학회 2018 한국환경과학회지 Vol.27 No.5
The influence of various forms of Houttuynia cordata with fermented red koji as feed additives on the performance of duck livestock was evaluated through a field study. Two hundred and forty ducks (Pekins) aged 0-38 d were used. They were randomly assigned to four treatment groups (0%, 1% H. cordata powder with fermented red koji, 1% H. cordata pelleted with fermented red koji, and 1% H. cordata coated with fermented red koji) with four replicates (15 ducks per replication). Foreconomic evaluation, the data (a total of 240 duck) obtained from each treatment were applied to 10,000 ducks per treatment 38-d after the feeding trial. Overall, the results of economic evaluation were the highest in the treatment with 1% H. cordata coated with fermented red koji, followed by 1% H. cordatapelleted with fermented red koji, 1% H. cordatapowder with fermented red koji, and control. In conclusion, using 1% H. cordatawith fermented red koji as coating and pellet type duck diets might be of economic advantage for sustainable environmental management.
FTA 체결에 대비한 임산물 경쟁력 수준과 수출전략품목 분석
장우환 ( Woo Whan Jang ),권용덕 ( Yong Duck Kwon ) 한국산림과학회 2005 한국산림과학회지 Vol.94 No.1
This paper examines the relative competitive position of korean forest products market over period of 1999 to 2003 and selects strategic exported goods from its position provide against concluding FTA agreement with China, Japan and ASEAN. The poilfolio approach is used to develope competitiveness-market share matrix. The position of major export countries on the competitiveness-market share matrix will be in one of nine cells, with differing implications for their role in korean forest products market. Based the competitiveness-market share matrix, Major export countries are divided into first cell type. third cell type and ninth cell type and the items of ninth cell type are chosen as strategic exportable goods.
장우환 ( Woo Whan Jang ),이상호 ( Sang Ho Lee ) 한국협동조합학회 2011 韓國協同組合硏究 Vol.29 No.3
The objectives of this study are as follows:First, to analyze the actual conditions faced by the Forestry Corporation(FC); second, to estimate efficiency of FC using Data Envelopment Analysis(DEA); third, to provide the basic data to enhance the competitiveness by streamlining management of FC. FC system was introduced for the purpose of deregulation rather than activating the management of private forest. The efficiency of the 48 FC was analyzed by using DEA model. The technical efficiency, pure technical efficiency, and scale efficiency measure of the FC is o.38, o.64, and 0.61 respectively. Among the 48 FC, the number of efficient FC whose efficiency value was 1 was ① 4(8.3%) in the technical efficiency, ② 10(20.8%) in the pure technical efficiency, ③ 4(8.3%) in scale efficiency. Among the 48 FC, the number of inefficient FC whose efficiency value was less than 1 was ① 44(91.7%) in the technical efficiency, ② 38(79.2%) in the pure technical efficiency, ③ 44(91.7%) in scale efficiency. Among the 48 FC, the number of Increasing Returns to Scale (IRS)-type FC was analyzed to be 44(91.7%). The number of Constant Returns to Scale (CRS)-type FC was analyzed to be 4(8.3%). Since an increase in input is lower than an increase in output in IRS, an increase in input factors such as investments is required.