石炭, 洋灰關聯産業이 嶺東地域經濟에 미치는 波及效果 分析

박형래,강영갑,양정식,류한천 강릉대학교동해안지역연구소 1994 東海岸硏究 Vol.5 No.1

본 논문의 목적은 지역산업연관표를 이용하여 영동지역의 산업연관 관계를 계량적으로 분석하는데 있다. 이러한 산업연관 분석방법은 영동지역의 산업상호간 경제활동과 구조적 특징을 체계적으로 분석하고 장래의 산업 변화에 대한 예측을 가능하게 한다. 본연구의 결과에 나타난 몇가지 중요한 점은 다음과 같다. 첫째, 석탄, 양회산업은 지역산업연관효과가 매우 높은 수준으로 측정됨으로써 이들 특화산업이 지역발전의 선도산업으로서 중요한 역할을 수행하고 있음을 보여주고 있다. 둘째, 이들 두 산업이 영동지역내에서는 중요한 산업이지만 양회산업의 경우 지역전체 생산에서 차지하는 비중이 매우 높은 산업임에도 불구하고 고용승수로 측정되는 고용효과 측면에서는 그 영향이 그리 크지 않은 것으로 나타났다. 이것은 시멘트 산업이 자본집약적인 장치산업으로서 자본의 규모에 비해 고용자를 많이 사용하지 않기 때문인 것으로 평가된다. The purpose of this study is to analyze the quantitative characteristics of the Young-Dong regional economy in industrial interleatedness by using the 1990 I-O table. The analysis of this structural character and industrial interrelatedness makes it possible to estimate the current structural problems and future prospects of Young-Dong regional economy. The findings of this study can be summarized as follows: 1)The coal mining and cement industries sector have relatively high and wide-spreading positive impacts on the regional output and income. 2)Above two sectors showed different impacts pattern on the employment. Coal mining sector gives relatively higher impacts on the regional employment but cement industry sector gives lower impacts on the regional economy because cement industries sector is labor saving industries with large equipment requirement.

터보 차져와 인터쿨러를 장착한 디젤기관의 시뮬레이션 연구

한영출,백두성,류규현,오용석,박만재 韓國工作機械學會 2000 한국생산제조학회지 Vol.9 No.4

Studies on the turbocharger itself or various aspects generated from turbocharged engine have been made. However, only a few researches have been made on the performance for the natural aspirated engine equipped with the turbocharger and the intercooler. In this study, the performance prediction program based on turbocharger theory is developed for simu-lation which may reduce the cost and the trial-and-error time. The program is verified with the experimental results for 11,000cc diesel engine with the turbocharger and the intercooler. Also, various factors which are invisible in experiment are predicted using this program.

근 피판술을 이용한 기관흉막루의 치료

류한영,설정현,김정철,한승세,우상현,최시호 大韓成形外科學會 1991 Archives of Plastic Surgery Vol.18 No.2

Bronchopleural fistula and chronic empyema are the difficult problems in the thoracic surgery field. We experienced 3 cases of chronic empyema and complicated bronchopleural fistulas treated with muscle flap and concomitant thoracoplasty. The causative primary diseases were pulmonary tuberculosis and bronchiectasis. All the three cases have failed to control the chronic empyema and bronchopleural fistula with conventional method such as closed or open drainage and Eloesser flap after lobectomy. The unresponsive infection on bronchopleural fistula and pleural space was well controlled after muscle flap with thoracoplasty. Complete decortication, closure of bronchopleural fistula as much as possible and coverage of closed fistula with good vascularized tissue are the essential factors for the success of operation on chronic empyema and bronchopleural fistula. The results of operations were satisfactory and the respiratory function was well preserved or improved in one patient. But, the contour of chest wall was deformed in patient with extensive concomitant thoracoplasty.

광역 인터넷망에서 Bandwidth Broker를 이용한 단대단 QoS에 관한 연구

柳基漢,徐榮喆 충주대 2004 産業科學論文集 Vol.12 No.-

Current Internet is based on TCP/IP service that follow lots of packet loss or packet delay through the Internet delivery. And this service can't guarantee user's various QoS requirement well. In this paper, we studied the features of current Internet and lots of effort to support Internet QoS such as DiffServ model using Bandwidth Broker. Finally, we confirm the superiority of improved DiffServ model using Bandwidth Broker and analyze end-to-end traffic characteristics by network simulation results.

구내표준방사선사진 촬영법에 따른 치아길이의 변화

류영하,최갑식,이상한 慶北大學校 齒科大學 1990 慶北齒大論文集 Vol.7 No.1

The study was desinged to determine the tooth length variation according to the intraoral radiographic techniques and film holding methods. Four hundred and fourty eight standard radiographs were obtained by 4 groups of radiographic techniques and film holding methods. Four groups were ; Group A : Bisecting-angle technique with Rinn BAI Group B : Bisecting-angle technique with Rinn Snap-A-ray Group C : Paralleling technique with Rinn XCP instrument Group D : Bisecting-angle technique with operater's fingers The effects of radiographic techniques and film holding methods upon the prediction of tooth length for all major types of teeth were evaluated. The obtained results were as follows : · The paralleling techique using the Rinn XCP film holder had the smallest difference between actual tooth leght and radiographic tooth length. · The difference between actual tooth length and radiographic tooth length in bisecting angle techiques was the smallest in the technique using Rinn BAI. · In compare techique using Rinn XCP with techique using Rinn BAI, there was no significant difference. J. Kyungpook Univ. Sch. Dent. Vol. 7, No. 1,111∼119,1990

실시간 시스팀 설계를 위한 큐잉모텔 적용 분석에 관한 연구

柳基漢,崔英奎,元忠常 忠州大學校 1993 한국교통대학교 논문집 Vol.28 No.-

This paper presents the analysis of queueing model to be applied to the development of real-time system on the base of the computer To analyze the perfarmance of queue, we selected the queueing model, M/M/1 (N) which is employed in general and got the analysis result through simulation. This result becomes the important element when developing a real-time system with message queues.

21C의 컴퓨터 敎育

류기한,최영규 충주대학교 학생생활연구소 1998 學生生活硏究 Vol.5 No.-

암모니아성 질소(NH_4^+-N)제거를 위한 제올라이트성 물질의 제조

류태공,류재춘,한명식,김철규,김영호,양현수 忠南大學校 産業技術硏究所 2002 산업기술연구논문집 Vol.17 No.2

The objectives of this study were to synthesize high ion-exchangeable zeolitic materials prepared from coal fly ash and to determine the adsorption capacities for the removal of NH_4^+4-N in wastewater For comparison. NH_4^+-N adsorption capacities of commercial, natural, and synthetic(4A type, Si0_2/Al_2O_3=1.98. Na_2O/SiO_2=1.54. H_2O/Na_2O=46.95) zeolites were investigated at the same condition. Zeolitic materials were prepared from coal fly ash by hydrothermal reaction with various NaOH concentrations at the reaction time of 4h and the reaction temperature of 100℃. It showed that the zeolitic material prepared at a 4M-NaOH concentration had the most NH_4^+-N adsorption capacity. Theremoval efficiency of NH_4^+-N on the zeolitic material was little difference compared with those on natural and commercial zeolites, though it was lower than that on a synthetic zeolite(4A type). As a result, it is expected that the prepared zeolitic material could be applicable to adsorbent for the NH_4^+-N removal in wastewater.

착자기 자동화 시스템 개발

柳基漢,崔英奎 忠州大學校 1994 한국교통대학교 논문집 Vol.29 No.2

This paper presents the implemented communication control system using a processor(8032) to automatize a magnetizing process in manual. As using the implemented system, we were able to get the high quality and productiviy in the process of magnetizing. And this system was implemented to be able to provide the functions of statistics and analysis with the saved data in a database that was generated in magnetizing.

瑕疵補修請求權에 관한 비교법적 검토

韓雄吉,盧永相,柳在南,鄭己鎬 동아대학교 법학연구소 1993 東亞法學 Vol.- No.15