옻나무 재배농가의 경영실태에 관한 연구

송병민,한재국 ( Byong Min Song,Jae Kuk Han ) 한국산림경제학회 1996 산림경제연구 Vol.4 No.1

韓國의 燃料林發展과 經營에 關한 硏究

宋炳珉 尙志大學校 1987 論文集 Vol.8 No.-

The study was performed to grasp the development process and management status of fuel forest in Korea, and to estimate the consumption and production of force fuel. The following are considered as the results from the study. 1). The fuel forest establishing project in Korea began in earnest with the year 1959. 2). The highest result of fuel forest establishing was proved to the project of the year 1967 established under short-range plan on fuel forest establishing. 3). The fuel forest covers about 10% of the total forest area in Korea and during the 1970's the yearly mean production of forest fuel amounts to 5.5 million M/T. 4). On counting the fuel consumption as 4.2M/T per farming household a year on the average, the consumption rate of forest fuel of the total fuel (4.2M/T) was estimated at 56 percent. 5). With decreasing in the number of farming households and increasing in the more utilization of other fuels, the consumption of forest fuel in future is forecasted to decrease gradually.

이태리포플러 歷史的發展, 造林 및 利用에 關한 硏究

宋炳珉 尙志大學校 1998 論文集 Vol.9 No.-

This study was performed to grasp the process of historical development on Italian poplar, the accomplishment of reforestaion, and the yield and utilization of poplar timber in our country. The major results obtained from the study were summarized as follows: 1. With a part for increasing forest-products resources, Italian poplar has been propagated and planted all over the country since 1962. 2. Italian poplar planted to the end of 1986 amounts to 270, 000, 000stocks, about 680, 000ha. 3. The annual utilization of popular timber showed relatively a constant quantity, while the yield was given to continue decreasing. 4. In view of the quantity of Italian poplars planted in the past, it is sufficient to meet the domestic demands for the processing industry, but the porportion of importing timber to be used for it is proved to increase annually. Therefore, the proper measures should be taken to meet the domestic demands.

I . B . R . D . 새마을사업차관에 의한 연료림조성의 (燃料林造成) 경제분석에 관한 연구

송병민,박태식 ( Byong Min Song,Tai Sik Park ) 한국산림과학회 1983 한국산림과학회지 Vol.59 No.1

The study was performed to decide the returns or investment efficiency of the fuel forest established project and to examine its economic value as compared the benefit with the cost occurring from that established by I.B.R.D loan. The data got from the surveying plot and other things connected with the project were applied to the measures of benefit-cost ratio and internal rate of return (IRR). The following are the results from the economic analysis of the fuel forest created by the loan per hectare 1) In case of converting the fuelwood value from the fuel forest into briquet price, the benefit-cost ratio is 1.18 at the 6 percent discount rate and the IRR is appraised to 12.2 percent 2) In the sensitivity analysis estimated by the rising rate of rural wages 27% the yearly mean, the B/C ratio is 1.07 at the 6 percent discount rate and the IRR 9.2 percent. 3) In the sensitivity analysis estimated by the rising rate of briquet price, 26% the yearly mean, the B/C ratio is 1.34 at the 6 percent discount rate and the IRR is appraised high to 15.7 percent 4) In the event of including indirect effects to the direct in the project, the economic effect could be increased just a little more.

Phylogeographical characterization of H5N8 viruses isolated from poultry and wild birds during 2014–2016 in South Korea

송병민,이은경,이유나,허경범,이희수,이윤정 대한수의학회 2017 Journal of Veterinary Science Vol.18 No.1

During 2014–2016 HPAI outbreak in South Korea, H5N8 viruses have been mostly isolated in western areas of the country, which provide wintering habitats for wild birds and have a high density of poultry. Analysis of a total of 101 Korean isolates revealed that primitive H5N8 viruses (C0 group) have evolved into multiple genetic subgroups appearing from various epidemiological sources, namely, the viruses circulating in poultry farms (C1 and C5) and those reintroduced by migratory birds in late 2014 (C2 and C4). No C3 groups were detected. The results may explain the possible reasons of the recent long-term persistence of H5N8 viruses in South Korea, and help to develop the effective measures in controlling HPAI viruses.

산지이용제도의 변화에 따른 산지전용실태에 관한 연구

송병민,류주형 한국산림경제학회 1999 산림경제연구 Vol.7 No.2

The study was conducted to analyze a serises of processes on the classification of forest land use since 1980s and the status of conversion from forest land into an utilization for another industries in the way of the land development, and to consider its state in the foreign country. To furnish the basic materials for the rational plan of forest land use system, the main results obtained through the study are summarized as follows 1) Under the present forest land use system, there is all the difference of land price between the forests for conservation and development. In consequence it could be resulted that the reserved forests lower than semi-reserved forests in the price are increased into utilization for another purpose. 2) There is necessary that the forest land use system must be made out a map of the forest function classification on the ground of the appreciation of various functions, considering the site environment and social and economic condition for the effective use of forest land ralated to the characteristics of region. 3) The demand from forest land for another use is showed that most of the use in 1980s was made of the primary industry as farm or grass land, but in 1990s the recreation industry like golf course or skiing ground. 4) The forest land classification in the country has applied the ownership-oriented system based on the function by a lot of forest land, but, for the effective development of forest land, it must be improved to the system with natural affinity that could make the damage of forest resources minimize. In addition, it is essential that the function-oriented classification and license system in the development of forest land have to be adopted for the rational forest management.

Pathogenicity of H5N8 virus in chickens from Korea in 2014

송병민,강현미,이은경,Jipseol Jeong,Yeojin Kang,이희수,이윤정 대한수의학회 2015 Journal of Veterinary Science Vol.16 No.2

In 2014, two genetically distinct H5N8 highly pathogenic avian influenza (HPAI) viruses were isolated from poultry and wild birds in Korea. The intravenous pathogenicity indices for the two representative viruses were both 3.0. Mortality of chickens intranasally inoculated with the two H5N8 viruses was 100% with a mean death times of 2.5 and 4.5 days. Mortality rates of the contact groups for the two H5N8 viruses were 33.3% and 66.6%. Our study showed that transmissibility of the novel H5N8 viruses was different from that of previously identified H5N1 HPAI viruses, possibly due to genetic changes.

반복 복호화를 사용하는 BLAST-STTC 시스템을 위한 역순서화 기법

송병민,박상규 한국통신학회 2005 韓國通信學會論文誌 Vol.30 No.5

옻나무 造林과 옻液의 生産 및 利用 實態에 關한 硏究

宋炳珉 尙志大學校 1995 論文集 Vol.16 No.-

For being helpful to activate the growing of Rhus vernicifera and increase the utilization of rhus lacquer, the planting accomplishment of that in Korea and the growing results in Wonju area were considered, and the production and use of the lacquers were researched also to search about for several problems on those. The growing of the lacquer tree in this country has a long history that it has been planted from Silla era. During japanese period, they took much interest in a rhus lacquer from korea, bagan the researches about it, and promoted and made a lacquer tree planted in rural areas. Nowaday, most of the rhus lacquer in this country have been produced in Wonju area, Kangwon province. There was the planting accomplishment of 125,000 stocks yearly from 1992 to 1994. As of 1994, number of households growing a lacquer tree in this area showed to be formed 288, of which 262 (91%) owning 1ha and less. The quantity of a lacquer used in the country was equivalent to 3,000kg yearly, of which over 1,000kg has been produced in Wonju area. Above 70% of total production had been exported to Japan, but as the rhus lacquers low-priced from China began to be exported, the export of Korea lacquers took a sudden urn for the worse. The crude lacquers collecting from this county have been recognized to be superior to the other countries. But a large number of furniture manufacturers has used the refined lacquers imported from Japan. Therefore, the methods of refining crude lacquers must be improved as soon as possible. As the collecting work of that requires a specific physical constitution, one will acquire no longer the collection process of rhus lacquers. Now the workers engaging in rhus lacquer collection amout to no more than 30 in Wonju area, but, according to their reduction, the measures to meet the situation must be taken in future. Finally, the various uses of rhus lacquers and production of the excellent refined must be accomplished so that the growing size of lacquer tree and the income earning from that may be increased.

포플러加工業體의 經營實態및 財務分析에 關한 硏究

宋炳珉 尙志大學校 1989 論文集 Vol.10 No.-

The study was conducted 1) to investigate the status of poplar utilization and 2) to analyze the managerial and financial status of poplar processing enterprises in Korea. The major results obtained from the study were summarized as follows : 1. The annual uses of poplar wood did not increase markedly in the 1980's as compared with those in the 1970's. However, in recent years utilization of chopstick rather increased, whereas that of matchsplint decreased. 2. About 80% of poplar processing enterprises consisted of the employees less than 50 persons, and the employees were, for the most part, females. 3. About 80% of the enterprises has used Italian poplar as raw material, and 58.2% of them decided product price on the basis of competitive price. 4. The financial stability of the enterprises was, in general, better than those of medium manufacturing and wood inustries. However, the net profit and turnover ratio to net worth were under the standard level. 5. For the proportion of production cost to net sales, the ratio of fixed cost was higher than that of variable one. Break-even point ratios for the enterprises investigated were better than those for medium manufacturing and wood industries. But the ratio of profitability became low as employee size increased.