퍼지 제어기를 이용한 차량의 자율주차 시뮬레이션

박재현,김승철,한창훈,박종오,임영도 東亞大學校 附設 情報通信硏究所 1998 情報通信硏究所論文誌 Vol.6 No.1

In a case of driving beginnners, it is very difficult to park a car perfectly because driver's knowledge makes more errors than intelligent mechanism when they are performed repeatedly. However skilled drivers be of experienced knowledge are able to park a car quickly. In this paper, we analyzed driving patterns of skilled drivers, designed the fuzzy controller to park based on it, and perform auto-parking simulation of a car using that controller.

김치유래 젖산균의 균체지방산 분석을 이용한 분류학적 연구

이정숙,정민철,김우식,이근철,김홍중,박찬선,이헌주,주윤정,이근종,안종석,박완,박용하,민태익 한국미생물생명공학회 ( 구 한국산업미생물학회 ) 1996 한국미생물·생명공학회지 Vol.24 No.2

표준균주를 포함한 230여개의 김치유래 젖산균에 대한 균체지방산(FAMEs)을 분석하였다. FAMEs profiles는 Euclidian Distance 17.5에 의해 7개의 Major Cluster와 1개의 Single Cluster로 나뉘어졌다. 이중 A, B, C 및 Cluster는 Leuconostoc속으로 분석되어졌고, F는 Lactobacillus속으로 분석되어졌다. 그리고 E와 G cluster는 두개의 Genus가 혼재되어 나타났으며 보충적인 연구가 필요하다. 앞으로 김치유래 젖산균의 균체지방산 분석결과를 기반으로 한 데이타베이스에 95가지 탄소원을 이용하는 수치분류학적 접근방법 및 Pyrolysis Mass Spectrometry 등의 화학적 분석 방법과 분자친화적 연구를 통한 종합적 분류정보 체계가 갖추어지면 젖산균의 신속, 정확한 동정 및 연구에 활발히 이용되어질 것이다. Two hundreds and thirty lactic acid bacteria, mostly isolated from Kimchi, including type strains were sued for analysis of cellular fatty acids. The 230 test strains were recoverd in 7 major and 1 single clusters defined a Euclidian distance of 17.5. These aggregate taxa were equivalent to the genus Leuconostoc (aggregate group A, B, C and D), and the genera Leuconostoc and Lactobacillus (aggregate group G). It is concluded as evident that FAMEs (Fatty Acid Methyl Esters) profile of cell can be used as a criterion in classification of lactic acid bacterial from kimchi. Additional comparative taxonomic studies need to be carried out on well chosen representative strains to determine the most appropriate methods of value.

Elevational Distribution of Breeding Bird Communities in Seoraksan National Park, Korea

( Hyun-su Hwang ),( Jae-kang Lee ),( Tae-kyung Eom ),( Ho-kyoung Bae ),( Dong-ho Lee ),( Jong-hwan Lim ),( Sung-cheol Jung ),( Chan-ryul Park ),( Shin-jae Rhim ) 한국산림과학회(구 한국임학회) 2020 한국산림과학회지 Vol.109 No.1

In this study, the elevational distribution of breeding birds in Seoraksan National Park, Korea was investigated. Forty-six species of birds were documented from line transect surveys taken from Seorakdong at 230 m above sea level (a.s.l.) to the Daechungbong summit at 1708 m asl. Birdspecies richness and diversity were highest in Seorakdong and lowest at the Daechungbong summit. As elevation increased, bird species richness and diversity decreased, with a humped-shape trend being observed between 700 m and 1200 m a.s.l. Stepwise analyses revealed that breeding bird species diversity indices were significantly negatively correlated with elevation (r² = 0.327, P < 0.001) and positively correlated with vegetational coverage (r² = 0.324, P = 0.046). Higher elevations supported fewer birds than low and intermediate elevations. Projections at the local scale, including data on behavior and habitat use by birds, will be necessary for optimal conservation and management of the bird communities in Seoraksan National Park.

Elevational Distribution of Breeding Bird Communities in Seoraksan National Park, Korea

Hwang, Hyun-Su,Lee, Jae-Kang,Eom, Tae-Kyung,Bae, Ho-Kyoung,Lee, Dong-Ho,Lim, Jong-Hwan,Jung, Sung-Cheol,Park, Chan-Ryul,Rhim, Shin-Jae Korean Society of Forest Science 2020 한국산림과학회지 Vol.109 No.1

In this study, the elevational distribution of breeding birds in Seoraksan National Park, Korea was investigated. Forty-six species of birds were documented from line transect surveys taken from Seorakdong at 230 m above sea level (a.s.l.) to the Daechungbong summit at 1708 m asl. Birdspecies richness and diversity were highest in Seorakdong and lowest at the Daechungbong summit. As elevation increased, bird species richness and diversity decreased, with a humped-shape trend being observed between 700 m and 1200 m a.s.l. Stepwise analyses revealed that breeding bird species diversity indices were significantly negatively correlated with elevation (r² = 0.327, P < 0.001) and positively correlated with vegetational coverage (r² = 0.324, P = 0.046). Higher elevations supported fewer birds than low and intermediate elevations. Projections at the local scale, including data on behavior and habitat use by birds, will be necessary for optimal conservation and management of the bird communities in Seoraksan National Park.

Al-Si합금용탕과 Al₂O₃의 젖음성에 관한 연구

朴昌宣,金鍾贊,朴相俊,權赫茂 忠南大學校 産業技術硏究所 1992 산업기술연구논문집 Vol.7 No.1

The purpose of this study is to obtain basic infotmation on the wettability of pure-Al/Al₂O₃, Al-alloy/Cu, Al-alloy/Ni and Al-12%Si/Al₂O₃systems, by using the Sessile drop method. The wettability of Al alloy-melt on Al₂O₃increases with increasing temperature from 750℃ to 850℃ for Al-12%Si-y% (Cu, Zn and Mg) (y:0∼2)/Al₂O₃system, the contact angle decreases with increasing Cu, Zn and Mg content. The wettability of Al alloy on Cu and Ni-palte is better than that on Al₂O₃-plate : this is attributed to the interfacial reaction between the Al aiioy and the metal substrate.

차대차의 충돌 해석

박종철,이홍석,손성건,박종찬 內務部 國立科學搜査硏究所 1996 國立 科學 搜査 硏究所 年報 Vol.28 No.-

Silver 처리한 Ceramic을 첨가한 PE film으로 포장된 김치의 저장성

박찬영,은종방,김종대 全南大學校 農業科學技術硏究所 1996 農業科學技術硏究 Vol.31 No.-

The quality changes of Kimchi packaged with LDPE(low density polyethlene, thickness 30㎛), AC30(added 3% ceramic and treated with silver in LDPE, thickness 30pm), AC60(added 3% ceramic and treated with silver in LDPE, thickness 60㎛) were studied during 10 days storage at 20℃. The concentration of carbon dioxide increased rapidly until 4 days of storage and decreased thereafter. Concentration of carbon dioxide was not different among packaging materials at the end of storage. Swelling in film bag of packaged Kimchi was not developed, not like being observed other packaging materials. Changes of pH, acidity and soluble solid contents in packaged kimchi were little differences among packaging materals during storage at 20℃. Number of lactic acid bacteria, content of vitamin C and sensory evaluation in packaged Kimchi were not significantly different among packaging materials. Unlike being expected, quality of Kimchi packaged with AC30, AC60 were not different from LDPE and shelf life of Kimchi was not extened. However, taste of Kimchi packaged in AC30 was better than LDPE by sensory evaluation after 4 days storage and swelling of its package was not shown. To extend shelf life of Kimchi using packaging materials we need to study for improvement of physical characteristics of the packaging materials and development of materials for active packaging

실험적 혼합혈액에서 VNTR유전좌위에 대한 중합효소연쇄반응 증폭으로 혼합비에 따른 개인식별

박종태,최찬,정상우 大韓法醫學會 1995 대한법의학회지 Vol.19 No.1

Genetic loci that contain a variable number of tandem repeats(VNTR) could be successfully amplified from a very small amount of genomic DNA by the polymerase chain reaction(PCR) and have been applied to individual identification in forensic field. Forensic samples are sometimes not a sample of one individual, but mixed sample, such as blood, hairs, and vaginal fluid with sperm. Even though very small amount of sample is mixed to the large one, the small fraction of the mixture is amplified by PCR. But sometimes it could not be detected in electrophoresed agarose gel with ethidium bromide staining, because the PCR products of small fraction are less amount rather than that of large fraction of mixed sample and because of the limitation of the sensitivity of ethidium bromide staining in agarose gel. We investigated to search the detectable limitation of the PCR products of mixed sample with various ration, experimentally. The sample were mixed with various ratio, amplified by polymerase chain reaction, electrophoresed, and stained with ethidium bromide. We can detect the small fraction of mixed sample from the 50% to the 5.9% or 3.0% of blood mixture and to the 0.8% of DNA mixture. In Southern blot, we can detect the small fraction in all ratio of blood mixture, to the 0.26% which is the smallest ratio of mixture in this experiment. Form the results, in samples which have a possibility of mixed sample, the southern blot analysis is necessary to increase the sensitivity of DNA fingerprint.

농업기술혁신의 경제성 평가와 관리체계

박종섭,안인찬 충북대학교 연초연구소 2004 煙草硏究 Vol.19 No.-

This study originated from an issue that technological innovation is an important factor in modern agriculture and it should be controlled systematically by government and farms. The objective of this study is to find out the methods of economic evaluation and management system of technological innovation in agriculture. Technological progress in agriculture improves the agricultural production function. For any given amount of inputs, we get more output than we did in the past farming. Modern theories of endogenous growth attempt to explain the rate of technological progress, which the Solow model takes as exogenous. These models try to explain the decisions that determine the creation of knowledge through research and development. The growth of agricultural income per farm is determined by the rate of technological progress. Because technological innovation in modernized agriculture is very important factors increasing the revenue and reducing the production cost. The difference between production functions is due to a difference of technique in how the inputs are used in producing the output. A farmer will not adapt a change in technology unless he expects that the adaption will lead to a reduction in per unit costs at the output at which he expects to operate. Since most innovations involve additional expenditures, total costs are likely to be increased at lower levels of output as a result of technological changes. Nevertheless, in order to increase the agricultural production and the levels of living it is necessary to develope and adapt technological improvements in agriculture. The major problem in agricultural technological innovation is to evaluate the economic value of new technology adapted by farmers in agricultural accounting system and to prepare the technological management system to develope better technology. Farms should reflect the economic value of technological changes through financial analysis in agricultural accounting system. Because an essential activity in financial management of agriculture is the development of a timely technological information system that provides a means for the decision maker as a farm operator to measure, evaluate, control, and improve the financial performance of the farm business. The government should develope the education of the skilled technical hands, R&D investment, the accumulation and risk management of agricultural technological information, and the development and spread of agricultural technology. We can expect the principal role of local agricultural college in technological management system of agriculture by the decentralization of agricultural extension function.

肝臟疾患에 있어서 血淸鐵値 變動에 關한 臨床的 硏究

朴贊鍾,高侊道 고려대학교 의과대학 1972 고려대 의대 잡지 Vol.9 No.1

On the patients of liver diseases who had been admitted to the Gastroenterology of this hospital, the serum iron levels was determined in 221 patients from whom they were subdivided into 88 cases of infectious hepatitis (48 cases of acute hepatitis and 40 cases of chronic hepatitis), 99 cases of postnecrotic liver cirrhosis, and 34 cases of primary hepatoma. The relationships between the serum iron level and the liver function tests, such as A/G ratio, total bilirubin, alkaline phosphatase activities, transaminase activities, total cholesterol levels with its ester form(%) and thymol turbidity tests according to the kinds of liver diseases were observed. The results were as following. 1. Of liver diseases, in cases of the primary hepatomas, the serum iron levels was remarkably decreased to 84.0 rg./dl. compared with the normal value 136.9 rg./dl. and postnecrotic liver cirrhosis showed the values 144.0 rg./dl. closely resembled to normal values. Infectious hepatitis showed the more increase of iron level than normal. Namely, acute case was 158.7 rg./dl. and chronic case was 186.0 rg./dl. 2. In the primary hepatomas, in addition to the remarkable decrease of serum iron level, reversed A/G ratio, the increases of total bilirubin, alkaline phosphatase activities and transaminase activities, increase of total cholesterol with its ester form(%) decreased and the increase of thymol turbidity tests were also noted. 3. However, is the acute infectious hepatitis, another with the primary hepatomas, the tendency of increases of alkaline phosphatase activities, transaminase activities, total cholesterol and thymol turbidity tests were observed as well as the increase of serum iron level. 4. And the correlations between the significant abnormal findings of liver function tests and the serum iron levels were not noticed in cases of liver cirrhosis and the chronic infectious hepatitis. 5. Such relations suggest the abnormal findings of liver function tests do not keep pace with the variety of serum iron level but occurs differently according to the lesions of liver diseases themselves. And that serum iron level might be helpful for the differential diagnosis between primary hepatoma and other liver diseases.