인터넷 사이버 교육에서 CMI(Computer Management Instruction)의 설계구현 및 적용에 관한 연구

박길철 한남대학교 교육연구소 2001 교육연구 Vol.9 No.-

Information network technologies introduce a new education environment. Cyber education is growing rapidly as a field of practice especially in distance education system. The development of multimedia environment based on such technology as graphics, image, voice, and video, personal computer systems use has become the media for interactive teaching-learning service. These features have made integrated multimedia education feasible. This research suggested a direction for the development of an interactive distance education system. I have developed an education system which cooperate problem bank and learning system. This system support arbitration of the relative difficulty in the problem bank database. An ongoing version of this research was evaluated. Those findings reveal several factors that influence how the proposed system can be tailored to the students' perspectives in order to come up with the enhanced version of this system.

감꼭지나방(나비목: 감꼭지나방과) 1세대 유충에 의한 떫은감의 피해양상과 발생소장

박은철,김길하,김정화,조수원 충북대학교 한국과학재단 지정 첨단원예기술개발 연구센터 2002 연구보고서 Vol.6 No.-

본 연구는 감꼭지나방 유충의 침입양상에 대하여 조사하였다. 떫은 감의 피해양상, 유충의 재충률, 지역별 피해양상 및 자연낙과율과 유충에 의한 낙과율을 조사하였다. 1세대 유충에 의한 피해양상은 과경이 64.9%와 꽃받침 부분이 35.1%이었다. 과경으로의 피해는 6월 하순경부터 7월 하순경까지 84.6%와 52.2%이었으며, 꽃받침부분으로는 15.4%와 30.5%이었다. 시기별로 감꼭지나방 1세대 유충에 의한 재충률은 6월 하순경부터 7월 하순경까지 59.0%에서 0%이었다. 자연낙과율은 유충에 의한 낙과율보다 피해가 더 크게 나타났다. 감꼭지나방의 발생소장은 연 2회 발생하며 1세대 성충은 5월 하순부터 6월 초순까지로 발생최성기는 6월 초순이었으며, 2세대는 7월 하순부터 8월 초순까지로 발생최성기는 7월 하순이었다. This study was conducted to determine the larval infestation aspect of persimmon fruit moth(PFM) Stathmopoda masinissa Meyrick, and its presence sites in damaged wild persimmon fruit, Diospyros kaki Thunb var domestica Mak, and rate of infested sites with larva, aspect of damaged of persimmon fruit moth in different regions and rate of natural or larval drop in Cheong ju, 2000. Rate of infested sites in wild persimmon fruit damaged by the 1st generation larva of the PFM were 64.9% at the pedicel and 35.1% at the calyx of flower, and from late June to late July the rate was 84.6% to 52.2% at the pedicel and 15.4% to 30.5% at the calyx of flower. At different observed dates the rate of infested site with larva in the wild persimmon fruit damaged by the 1st generation larva was from 59.0% to 0% at from late June to late July. Rate of natural drop damaged higher than rate of larval drop. Seasonal occurrence of S. masinissa was most likely to have to generations a year with first occurrence of adults from late May to early June and second from late July to early August including 2 peaks in early June and late July, respectively.

구리 지역에서 조사한 고혈압의 인지도, 치료률 및 관리률

홍철호,김순길,홍택원,이제,신진호,이재웅,김경수,김정현,임헌길,이방헌 대한간질학회 2003 대한간질학회지 Vol.9 No.1

멀티미디어 원격 교육 시스템 설계 : MDLS

박길철,황대준 成均館大學校 科學技術硏究所 1995 論文集 Vol.46 No.1

Providing both teachers and students with features for natural interaction is important issues on exploiting the benefits from multimedia collaboration learning session. With these facts Multimedia Distance Learning System(MDLS) has been come up with interesting functionalities: presentation configurator, and session management for multiple instance and concurrent sessions. The presentation configurator featured with MDLS allows teachers to find out the best way of delivery of the lectures to the students participating virtual classroom during distance learning session. This would be of great help for teachers to draw spontaneous committment from the students taking lectures.

경부에 발생한 의인성 괴사성 근막염의 증례

문철,권혁도,이동근,박경옥,성길현,이재은 大韓顎顔面成形再建外科學會 1994 Maxillofacial Plastic Reconstructive Surgery Vol.16 No.1

Necrotizing fascitis is a severe soft tissue infection characterized by extensive necrosis of superficial fascia, suppurative fascitis, vascular thrombosis, widespread undermining of surrounding tissues. Accociated systemic problems are widespread undermining of surrounding tissues, Accociated systemic problems are common, with chronic alcoholism and diabetes being most prominent. Most commonly this disease presents in the extremities, trunk, and perineum. Necrotizing fascitis of dental origing is rare and its fulminating clinical course is not well documented in the dental literature. The present report is a case of necrotizing fascitis following vital extirpation of the pulp in a patient with uncontrolled diabetes mellitus and liver cirrhosis. Originally throught to be caused by hemolytic streptococcus organism or stphylococcus aureus, advances in anaerobic culturing have shown it to be a synergistic bacterial infection involving aerobic and ovligate anaerobes. it is relatively rare in relatively rare in haea and neck regions. If it was not diagnosed and treated in early stages, necrotizing fascitis can be potentially fetal, with a mortality rate approaching 40%. It's treatment requires early recognition, prompt and aggressive surgical debriment and proper supportive cares, such as, antibiotic therapy, fluid resuscitation and correction of metabolic and electrolyte disorder, resolving of the underlying systemic disease. Recently, we experienced two cases of necrotizing fascitis in cervicofacial region, One patient was 60 years old male with uncontrolled Diabetes Mellitus and other patient was 48 years old with steroid therapy during 30 years. Local surgical wound healing was successful but, patients were died after admission, because of lung abscess, gastrointestinal bleeding, septic shock and respiration hold.

韓國과 中國의 林産物 國際競爭力

張哲洙,張宇煥,鄭靖吉 한국산림경제학회 2002 산림경제연구 Vol.10 No.2

WTO 출범으로 세계 경제가 무역자유화를 통한 하나의 시장으로 빠르게 통합되고 있다. 특히 중국의 WTO가입은 세계무역뿐만 아니라 우리나라 임산업에도 크게 영향을 미칠 것으로 예상된다. 이러한 세계적 조류속에서 우리나라 임산업이 발전하기 위해선 경쟁력을 높여 나가는 것 외에는 대안이 없다. 여기에서는 우리나라 주요 수출임산물을 대상으로 한ㆍ중 임산물이 세계시장에서 갖는 국제 경쟁력, 상대국 또는 제3국에 대한 수출의존도, 상대국 또는 제3국 시장에서 보여주고 있는 상대적인 경쟁력, 그리고 각 국의 수입의존도 등을 비교 검토해 봄으로서 향후 우리나라 임산물의 대중국뿐만 아니라 제3국 시장으로의 수출확대를 위한 대응방안 마련에 기초자료를 제시하고자 하였다. With the launch of WTO, we can no longer think of our domestic interests and policies without reference to the wider global context. In particular, since China occuies important position in the world agriculture, forest industry, and trade, it is expected that China's joining to the WTO will substantially influence the world trade and forest industry in Korea. One alternative is to strengthen the international competition of our forest products for the development of our forest industry. In this context, the purposes of this paper are laid at the analysis on the international comparatives of some forest products in Korea and China, on the basis of Revealed Comparative Advantage Index(RCA), Exporting Dependent on a particular Country, Comparative Advantage by Countries (CAC), Market Share(MS), etc. This paper also suggests ways to strengthen the international competition of our forest producs in the market of China and Japan.

선인장 재배농가의 농업정보 요구 조사

정구현,이해길,박인태,이철희 한국농업정보과학회 2000 농업정보과학 Vol.2 No.1

This study was performed to investigate the status of using personal computer(PC) and to develope strategy to improve PC utilization of Cactus Farmers. Sixty nine farmers are surveyed to collect data. Many farmers had intention to use PC to manage Cactus and have recognized that PC is required to manage farm and to improve their life quality. As a result of analysis on farmers' need for agricultural information, they highly demanded infor-mation on production skills, marketing information, overseas production trends, imports and exports information. Some farmers using or having intention to use software for Cactus farming want software to be developed and dis-tributed to support production technolog', labor management production cost and benefit analysis etc.

감꼭지나방(나비목:감꼭지나방과)의 발육생태

김정화,김길하,조수원,박은철,박형진 충북대학교 첨단원예기술개발연구센터 2000 연구보고서 Vol.5 No.-

충북 영동의 감나무 가로수에서 감꼭지나방(Stathmopoda masinissa)을 채집하여 온도 25±1℃,광주기 16L:8D, 상대습도 85%의 실내조건에서 이들의 발육생태를 조사하였다. 각 충태별 발육일수는 알기간 7.4일, 유충기간 34.8일, 번데기기간이 15.5일이었다. 1령에서 5령의 영기간은 각각 3.5일, 4.2일, 5.2일, 6.5일, 15.4일이었으며, 유충의 두폭은 각각 0.20, 0.40, 0.65, 0.87, 1.07mm이었다. 용화율과 우화율은 각각 68.0%, 59.9%이었다. 성충 수명은 수컷이 6.2일, 암컷이 10.1일이며, 암컷 한 마리당 평균 산란수는 24.4개였다. Persimmon fruit moth, Sathmopoda masinissa, collected from roadside persimmon trees planted as shade trees in yeongdong area was used to investigate their developmental ecology under laboratory condition; 25±1℃, 16L : 8D and 85% RH. Developmental periods for eggs, larvae, and pupae were 7.4, 34.8 and 15.5 days, respectively. The duration for each larval instar from the 1st to the 5th was 3.5, 4.2, 5.2, 6.5 and 15.4 days, respectively, and the head capsule width of corresponding stage was 0.20, 0.40, 0.65, 0.87 and 1.07mm. Rates of pupation and emergence were 68.0 and 59.9%, respectively. Longevity of adult males was 6.3 days while that of females was 10.1 days. Average fecundity was 25.4 eggs.

감꼭지나방 생태적 특성 및 방제약제 선발

김정화,김길하,조수원,박은철,김순섭,황태구,최상기 충북대학교 첨단원예기술개발연구센터 1999 연구보고서 Vol.4 No.-

경남지역과 충북지역 감나무의 재배, 해충 방제실태를 농가 방문하여 설문조사 한 결과 감 재배경력은 경남지역이 평균 10년이며, 충북지역은 평균 5년 정도이다. 감 재배 주수는 대다수 농가가 20주 이상이고, 재배관리에 대하여 자문을 받는 곳은 농업센터나 농약사 및 연구소 등이었다. 김 품종은 경남지역에서는 부유와 서촌조생, 충북지역에서는 등시와 월하 등을 재배하고 있었다. 시비종류는 이른봄 에 퇴비나 복합비료를 주었고, 감나무 생장 중 열매나 저장 중 열매에 발생하는 해충이 발견되었다. 해충방제를 위해 살충제를 살포하고 있는데 주로 감꼭지나방, 진딧물, 잎말이나방 및 깍지벌레 등으로 파마치온, 파단, 코니도, 신파마치온, 수프라사이드 등을 살포하였다. 감꼭지나방(Stathmopoda masinissa)의 발육생태를 조사하기 위하여, 감꼭지나방을 야외에서 채집하여 온도±1℃, 광주기 16L:8D, 상대습도 50~60%에서 실내 사육하였다. 각 층태별 기간은 알 7.4일, 유충기간 34.7일, 용 15.5일이었다. 각 령기간은 1령 3.5일, 2령 4.2일, 3령 5.2일, 4령 6.5일, 5령 15.4일이었으며, 특히 유층의 두폭을 측정하여 평균한 결과는 1령 0.20mm, 2령 0.40mm, 3령 0.65mm, 4령 0.87mm, 5령 1.07mm일 이었다. 성충의 수명은 수컷이 6.2일, 암컷이 10.1일 이었다. 용화율은 68.0% 우화율은 59.9%이었다. A survey in Kyungnam and chungbuk areas revealed that the average number of years for persimmon tree farming is 10 and 5 years, respectively. The number of trees per orchard is at least over 20, and the farmers have been usually advised through an agricultural center, an agrochemical store, or agrochemical research center. The varieties of the persimmons they grow are Buyu and Seocheon in Kyungnam, and Doogsi and Wolha in Chungbuk. The kind of fertilizers they sprayed in early spring is either compost or composite fertilizer. persimmon pests are often found in persimmon fruits while on a tree or in storage. Phamathion, Padan, Konido, Sinpamathion, and/or supuraside is usually used to control persimmon fruit moths, aphides, leafrollers, and scale insects. To understand the developmental ecology of the persimmon fruit moth, Stathmopoda masinissa Meyrick, we collected and reared them under the laboratory condition which is at 25±1℃ of temperature, 16L:8D of photoperiod, and 85% of relative humidity. As a result, the developmental period of egg, larva, and pupa were 7.40, 34.7, and 15.5 days, respectively. The average period of each larval instar was 3.50, 4.17, 5.17, 6.46, and 15.42 days, respectively, and the average head capsule width was 0.20, 0.40, 0.65, 0.87, and 1.07mm, respectively. The average adult longevity was 6.2 days for males and 10.1 days for females. The pupation rate and the emergence rate were 68.0% and 59.9%, respectively.

클러스터형 VOD서버에서 고가용성을 고려한 자체 복구 시스템

이좌형,서동만,방철석,김병길,정인범 강원대학교 정보통신연구소 2004 정보통신논문지 Vol.8 No.-

While clustered VOD (Video On Demand) servers that have been proposed for building large-scale VOD system recently, have the advantages of high availability and scalability, the system level reliability of the clustered VOD servers could be decreased by adding more servers to scale up the capacity of the server. To alleviate this reliability problem and support server-level fault tolerance, this paper proposes and analyzes self recovery system based on RAID-3 and 4 with pipelining concept. The proposed self recovery system could increase the efficiency of the disk by accessing the disk with large size block as in RAID-4. The network resource could be used efficiently and the workload of memory could be decreased by sending data in small size block as in RAID-3. By introducing pipeline concept, the recovery tasks are processed at several nodes in parallel so that the workload in CPU, network, and memory could be distributed to several nodes.