Wisconsin 주의 Red Pine 생태계의 Biomass 와 Net Primary Production 에 관한 연구

이수욱,Bockheim, J. G. 한국임학회 1983 한국산림과학회지 Vol.59 No.1

Wisconsin州의 酸性水河堆土에 生成된 Plainfield loamy sand (Typic Udipsamment)에 生長하고 있는 34年生 Red Pine (Pinus resinosa) 間伐造林地內에 있어서 Biomass와 Net Primary Production (NPP)을 推定하였다. 間伐林과 非間伐林間의 推定値를 比較하고 差異를 유발시키는 要因으로 樹幹의 比重과 Form Factor에 의한 영향을 계산하였다. 1) 34年生 Red Pine 間伐林의 Biomass와 NPP는 각각 97.3Mg/ha와 11.5Mg/ha/yr이었다. 2) 推定方程式을 比較해 볼 때 間伐林과 非間伐林間에는 樹木各部分別로 Biomass의 差異가 있었다. 3) 以上의 差異는, ① 樹幹 (樹皮 제외)의 比重 (Basic Specific Gravity)의 差異와, 間伐로 인한 Form Factor의 差異로 인하여 發生한 것이다.

주택수요 변화와 도시지역의 주택공급정책 방향

이수욱 대한지방행정공제회 2012 도시문제 Vol.47 No.523

Deep Structured Learning: Architectures and Applications

이수욱 국제문화기술진흥원 2018 International Journal of Advanced Culture Technolo Vol.6 No.4

Deep learning, a sub-field of machine learning changing the prospects of artificial intelligence (AI) because of its recent advancements and application in various field. Deep learning deals with algorithms inspired by the structure and function of the brain called artificial neural networks. This works reviews basic architecture and recent advancement of deep structured learning. It also describes contemporary applications of deep structured learning and its advantages over the treditional learning in artificial interlligence. This study is useful for the general readers and students who are in the early stage of deep learning studies.

차세대 인터넷 도입을 위한 경계 라우터의 성능분석에 관한 연구

이수욱,황성호,임해진 三陟大學校 2004 論文集 Vol.37 No.-

The IPv6(Internet Protocol version 6), a next generation internet protocol. was standardized to solve the problems of the IPv4(Intemet Protocol version 4). However. the IPv4 could not be actually converted to the IPv6 at one time. Therefore. the transition mechanism is thought to be very much important to be compatible with the IPv4 naturally and convert to the IPv6 network gradually. Despite of the development of various kinds of the transition mechanism, the IPv6 network was not expanded. The research was mainly made not for current system environment but for technical purposes. This paper investigated the performances through the transition mechanism and examined proper ways being applicable to current environment.

저사저수구의 (貯砂貯水溝) 유토저지효과에 (流土沮止效果) 관한 연구

이수욱,이태수 ( Soo Wook Lee,Tae Soo Lee ) 한국산림과학회 1976 한국산림과학회지 Vol.31 No.1

This study was carried out to find out the effect of soil and water storable pits on reducing the surface runoff. 10 pits were digged in each plot of 50 ㎡ along contour line. One kind of pits has a size of 30 ㎝ width, 100㎝ length and 30㎝ depth, and the other has 30㎝ width, 100㎝ length and 20㎝ depth. 1. The soil and water storable pits have a significant effect on reducing surface runoff. Control plot had surface runoff 2.3-2.6 times more than the plots with pits. 2. There is no significant difference in surface runoff between 30㎝ depth pit and 20㎝ depth pit. 3. The soil and water storable pits did not have any effect on coverage, survival and growth of three species. 4. Steep slope had worse results than the other slopes in coverage, growth and fresh weight of experiment species.

대기오염 및 산성우가 (酸性雨) 삼림생태계의 토양산도 (土壤酸度) 및 양료분포에 (養料分布) 미치는 영향

이수욱,민일식 ( Soo Wook Lee,Ill Sik Min ) 한국산림과학회 1989 한국산림과학회지 Vol.78 No.1

Four regions have been selected and surveyed to investigate the effects of air pollution and acid deposition on forest ecosystem. They were Seoul as urban region, Yeochon and Ulsan as industrialized region, and Kangwondo as uncontaminated region. Soil pH and the distribution of elements were analyzed in process of time for three years as well as by distance from pollution sources. In general, forest soils acidified in process of time from pollution sources to suburban areas. Hydrogen ion concentration in forest soils increased in 1988 as much as 60% of that in previous year. Average soil pH values in coniferous forest were 4.45 in Seoul, 4.54 in Yeochon, 4.81 in Ulsan, and 6.03 in Kangwondo. Forest soil pH increased with the distance from pollution sources to suburban areas at constant rate within short ranges (up to 30 ㎞) and at decreasing rate within long ranges (up to 200 ㎞). On the contrary, sulfur content in soils decreased every year except in Yeochon region. Base saturation of forest soils in polluted regions were all below 20% level compared with 70% in Kangwondo region. Active aluminum content in soils increased with the soil acidification at the highest rate in Yeochon, and the next in Ulsan and Seoul, Heavy metal content such as copper and zinc in tree tissues were the lowest in Kangwondo region, and the next in Yeochon, Seoul and Ulsan.

농과대학(農科大學) 부여(扶餘) 연습림(演習林)의 식생조사(植生調査)

이수욱,김지문,송호경,Lee, Soo-wook,Kim, Chi-moon,Song, Ho-kyung 충남대학교 농업과학연구소 1977 Korean Journal of Agricultural Science Vol.4 No.2

충남(忠南) 부여군(扶餘郡) 은산면(恩山面) 라령리(羅嶺里) 소재(所在) 본대학(本大學) 연습림(演習林)은 온대(溫帶) 중부(中部)의 참나무류(類)의 극성상(極盛相) 임분(林分)이 대부분(大部分) 파양(破壤)되어 남면(南面)과 산봉(山峰)을 연결(連結)하는 능선(稜線) 부분(部分)은 소나무 단순림(單純林)의 준극성상(準極盛相)을 이루고 있다. 식생(植生)은 비교적(比較的) 다양(多樣)하며 주요(主要) 수종(樹種)은 소나무, 상수리나무, 굴참나무, 갈참나무, 졸참나무, 비목나무 굴피나무등이며 목본 53과 203종, 초본 49과 128 종이다. 이들 식물(植物)을 이용도(利用度)에 따라 분류(分類)하면 다음과 같다. 식용(食用) 식물(植物) 60과 154종, 약용(藥用) 식물(植物) 63과(科) 143종(種) 초자원(草資源) 식물(植物) 51과 140종, 관상(觀賞) 식물(植物) 32과(科) 78종(種), 용재수종(用材樹種) 12과 27종등이다. The experimental forest of Cbungnam National University is located in Naryung-Ri, Eunsan-Myen, Buyeo-Gun, Chungcheongnamdo. The climax vegetations of Quercus species grown in centrual temperate zone are supposed to be destroyed before pure pine stands as a semi-climax vegetation are established on the southern aspect and along the ridges. Variability of vegetations is rather high and dominant species are such as Pinus densiflora, Quercus acutissima, Quercus variabilis, Quercus aliena, Quercus serrata, Lindera erythrocarpa, Platycarya strobilacea, and so on. There tare 203 woody plants and 128 herbal plants. According to the use of vegetations they can be classified as follows; 60 familia and 154 species for edible source, 63 familia and 143 species for medicinal, 51 familia and 140 species for forage, 32 familia and 78 species for ornamental, and 12 familia and 27 species for timber source.

이전가격 과세제도에 대한 정책대응방안 연구

이수욱,황일영,이기하,이창남 한국경영컨설팅학회 2013 경영컨설팅연구 Vol.13 No.4

세계가 단일 경제권 형성으로 모아지면서 다국적기업의 성장은 일반적인 상황이 되었다. 각 나라마다 세정에 관한 내용이 다르고, 입장이 상이한 환경에서 다국적기업이 이익을 극대화 하려는 과정에 발생하는 이전가격 문제는 기업의 문제를 넘어 외교적 대립으로 확대되고 있다. 위와 같은 문제를 해결하려는 국제사회의 노력도 OECD지침과 UN매뉴얼 등으로 다양화되고 있는 시기에 한국 자동차산업을 중심으로 난맥상을 해결하고 정책적으로 대응하기 위한 매뉴얼을 마련하는 것이 필요하다고 생각한다. 본 연구에서는 이전가격 과세에 대한 체계적인 대응 절차를 위해 예방(Prevention), 회피(Avoidance), 탐지(Detection), 개선(Improvement) 절차로 로드맵을 구성하여 시기별 그리고 입장별로 정책 대응방안을 제시한다. 이는 상시와 일시에 대응하는 방법을 달리하여 효율성을 제고 시킬 것이다. 이전가격에 관한 예방적 정책대응은 해외투자회사의 설립 형태를 산업 형태에 따라 타당하게 선택할 것을 제안하고, 회사 설립 시 LM기업과 CM회사의 중간형태의 기업을 설립할 필요가 있다.

황폐지 토양수분이 묘목의 (苗木) 생장 및 양분흡수에 미치는 영향

이수욱,김지문,송호경 ( Soo Wook Lee,Chi Moon Kim,Ho Kyeong Song ) 한국산림과학회 1978 한국산림과학회지 Vol.38 No.1

In afforestation of denuded forest land soil conditions playa very important role in early growth of cover vegetations. This study was designed for understanding the effect of soil moisture regime on growth and nutrient uptake of some seedlings. Cover vegetations such as Pinus rigida Miller, Robinia pseudoacacia L. and Lespedeza bicolor Turcz. were planted in pot with the soil transported from denuded forest land in Musu-ri Sannae-Myeon. Daedeog-Kun, Chungnam Province. There were 3 moisture treatments and 4 fertility levels in P₂O_5 with 4 replications. Influence on growth was observed by the variation in dry weight and nutrient uptake was studied in nitrogen, phosphate and kalium. Results are as follows: 1. For Pinus rigida seedlings decrease in soil moisture tension increases growth of dry weight and enhance the uptake of kalium. Increase in P₂O_5 fertility level tends to decrease the uptake of kalium rather than increase in P₂2O_5 uptake. 2. In Robinia pseudoacacia increase in soil moisture content stimulates the uptake of nitrogen and kalium. Increase in P₂O_5 level enhances the uptake of P₂O_5 and increases growth of dry weight. 3. In Lespedeza bicolor increase in soil moisture content has a tendency of decrease in nitrogen uptake. Increase in P₂O_5 level increases the growth of dry weight as well as the uptake of P₂O_5.

재무분석가의 예측수정에 대한 연구

이수욱 광운대학교 기업경영연구소 1996 기업경영연구 Vol.4 No.-