고호모시스테인증과 동반된 소뇌출혈 1예

홍석찬,안재영,조수진,정진상,이광호,홍승철,변홍식 대한신경과학회 1999 대한신경과학회지 Vol.17 No.3

顎關節機能障碍 診斷을 爲한 頭部軸方向 放射線寫眞에서의 下顎顆頭의 位置分析

卞鍾秀,崔珣哲,金碩鎬 大韓口腔顎顔面 放射線學會 1991 Imaging Science in Dentistry Vol.21 No.1

저자는 顎關節機能障碍의 소견을 가진 환자 75명과 顎關節機能障碍의 病歷 및 現症이 없는 정상인 75명을 표준화된 조건하에서 頭部軸方向放射線撮影을 하여 顆頭水平角과 initial 및 final depth of cut를 측정하고 통계학적으로 분석한 결과를 다음과 같이 요약할 수 있었다. 환자군과 정상군, 患側과 非患側에 있어 顆頭水平角과 initial 및 fianl depth of cut는 통계학적으로 유의한 차가 없었으므로 頭部軸方向放射線寫眞은 임상에서 顎關節機能障碍의 유무 및 患側과 非患側의 감별에 이용하기에 부적합한 방법이라 사료된다. 본 연구의 계축치는 편차가 심하므로 환자마다 顆頭水平角을 측정하여 이각에 맞추어 顎關節斷層撮影을 해야 한다고 사료된다. The purpose of this study was to analyze the position of mandibular condyle on the submentovertex radiopgraph, thereafter to evaluate the usefulness of submentovertex radiograph in diagnosis of temporomandibular joint dysfunction, and to check the best method of tomographic techniques. Submentovertex radiographs which were taken in 75 temporomandibular joint dysfunction patients and 75 normal persons were used as the sample for this study. The obtained results were as follows: The submentovertex radiograph was a improper method in diagnosis of temporomandibular joint dysfunction and discrimination of affected side. The selective tomography was a better method than any other tomographic techniques in diagnosis of temporomandibular joint dysfunction.

동료상담자를 위한 의사소통기술 기술 프로그램

邊昌鎭,秋石鎬 경북대학교 학생생활연구소 1987 學生指導硏究 Vol.20 No.1

인공과학실험실 확장 : 전기 실험

변영태,오석일 弘益大學校 科學技術硏究所 2000 科學技術硏究論文集 Vol.11 No.-

ASL-EE (Artificial Science Laboratory for Electrical Experiments) is founded on the system structure of ACL-V (Artificial Chemistry Laboratory-V), which is formerly formulated and based on hierarchical knowledge related chemistry. ASL-EE has been improved and developed as a virtual experimental system that can simulate basic direct current circuit experiments, magnetic field experiments concerning magnetic force, and chemical cell experiments using the knowledge of chemistry that enclosed to elementary, middle, and high school curriculums. The former inference model had been improved and modified so that each consisting electronic device plays a role as a center of the main analyzing principal in a circuit. We expand this system to make more various experiments; not only the direct current experiments but also alternating current circuit is possible. The results show the possibility of contribution for science education by allowing students to do non-predefined electrical experiments in WYSIWYG(What You See Is What You Get) environment on computers. In this paper, we present an integrated strategy of partitioning and scheduling. We apply FDS technique for the scheduling. But, we use the relative scheduling urgency for partitioning that is the effect of an assignment of a node to a specific time step. The proposed algorithm produced good results and better execution time than paper [14]'s results for all benchmarks. In the future, we should include the communication costs between hardware and software components.

웹에서의 제품정보 수집 정보에이젼트

卞永泰,吳錫一 弘益大學校 科學技術硏究所 2001 科學技術硏究論文集 Vol.12 No.-

ASL-EE(Artificial Science Laboratory for Electical Experiments) has been developed as a virtual experimental system that can simulate basic direct current circuit experiments, magnetic field experiments concerning magnetic force, and chemical cell experiments using the knowledge of chemistry that enclosed to elementary, middle, and high school curriculums. Since the Web provides a lot of useful information about electrical components as well as general products, it is desirable to give ASL-EE users chances to look at commercial information about electrical components so that when they want to buy some of components used in the simulation in ASL-EE, they can get useful product information about the components before buying. This paper introduces WIMA-EE(Web Information Mining Agent for Electrical Elements) which consists of three modules: Collector, Extractor, and Wrapper. Collector collects related Web pages by using Web Robot, and Extractor extracts electrical component part numbers from tables on Web pages by tag-based analysis. Wrapper is a program which generates part numbers automatically based on the information of Extractor, sends them to related shopping malls and get product information when the results are successful. The current system covers only semi-structured (table form) Web pages and should be extended in future.

특허취득의 공시효과

김석진,변현수,진명용 慶北大學校出版部 2004 經商論集 Vol.32 No.1

Using a sample of 352 patent registrations announced by 65 firms during the 1990~2000 period, this paper investigates the announcement effect and factors affecting three-day, from -1 to +1 day, cumulative abnormal returns(CAR). We find that both abnormal returns on the announcement day and CAR(-1, +1) are 1.41% and 1.46%, respectively and all are significantly positive at the 1% level. This evidence means that the patent registrations increase shareholder wealth. Cross-sectional regression analysis reports that investment size in research and development (R&D) has a significantly positive effect on CAR(-1, +1) and firm size significantly negatively affects it.

顎關節機能장애 珍斷을 爲한 頭部軸方向放射線寫眞에서의 下顎顆頭의 位置分析

金碩鎬,卞種秀,崔珣哲 慶北大學校 齒科大學 1986 慶北齒大論文集 Vol.3 No.1

著者는 顎關節機能障碍의 소견을 가진 환자 75명과 악관절기능장애의 炳歷 및 現症이 없는 정상인 75명을 표준화된 조건하에서 頭部軸方向放射線撮影을 하여 顆頭水平角과 initial 및 final depth of cut를 측정하고 통계학적으로 분석한 결과를 다음과 같이 요약할 수 있었다. 환자군과 정상군, 患側과 非患側에 있어 顆頭水平角과 initial 및 final depth of cut는 통계학적으로 유의한 차가 없었으므로 頭部軸方向放射線寫眞은 임상에서 악관절기능장애의 유무 및 患側과 非患側의 감별에 이용하기에는 부적합한 방법이라 사료된다. 본 연구의 계측치는 편차가 심하므로 환자마다 顆頭水平角을 측정하여 이각에 맞추어 顎關節斷層撮影을 해야 한다고 사료된다. The purpose of this study was to analyze the position of mandibular condyle on the submentovertex radiograph, thereafter to evaluate the usefulness of submentovertex radiograph in diagnosis of temporomandibular joint dysfunction, and to check the best method of tomographic techniques. Submentovertex radiographs which were taken in 75 tempormandibular joint dysfuction patients and 75 normal persons were used as the sample for this study. The obstients results were as follows : The submentovertex radiograph was a improper method in diagnosis of temporomandibular joint dysfuction and discrimination of affected side. The selective tomography was a better method than any other temographic techniques in diagnosis of temporomandibular joint dysfunction.

저선량 감마선 조사가 왕겨의 항산화능에 미치는 영향

정석문,김정한,김동열,육홍선,변명우,이승철 慶南大學校 附設 基礎科學硏究所 2002 硏究論文集 Vol.16 No.-

왕겨에 200, 400, 600, 800 및 1000 Gy의 저선량의 감마선을 조사하여 항산화능의 변화를 관찰하였다. 총 페놀 화합물의 양은 무처리구의 경우 0.184 mM를 나타내었고, 200 Gy로 감마선을 조사하였을 때는 0.215 mM로 약간 증가함을 보였으나 이후 차츰 감소하였다. 전자 공여능은 무처리구에 비해 처리구의 경우 조사 선량별로 조금씩의 차이만 있을 뿐, 조사 선량에 대한 왕겨의 전자 공여능은 유의적인 큰 변화 없이 비슷한 활성을 보였다. Fe^2+-ions 킬레이팅 활성은 무처리구의 경우 68.25%를 나타내었으며, 200, 400, 600 및 800 Cy 에서는 각각 86.45, 85.61, 86.65 및 82.84%로서 무처리구보다는 증가함을 보였으나, 1000 Gy에서는 74.67%로 감소하였다. 지질 과산화 억제능은 무처리구에 비해 처리구는 약간의 증가를 보였으나 효과는 미비하였다. We studied the effect of small-dose of γ-irradiation to rice hull(RH) for its antioxidant ability. The RH was treated with 200, 400, 600, 800, and 1000 Gy of γ-ray at 70 Gy/min. Total phenol amount of unirradiated RH was 0,184 mM, after irradiation at 200 Gy it increased to 0,215 mM, while irradiation above 400 Gy up to 1000 Gy decreased that to unirradiated level. The electron donating ability of RH did not show significant change depend on irradiation. The chelating ability for Fe^2+ of unirradiated RH was 68.25 %, while that of 200, 400, 600 and 800 Gy irradiated RH showed 86.45, 85.61, 86.65 and 82.84 % respectively, but, 1000 Gy was decreased to 74.67 %. According to TBARS analyses, inhibition ability of lipid peroxidation by RH was not affected by γ-irradiation.

국내 상수원수의 유기물 특성에 따른 소독부산물 생성능

염철민,변석종,조순행,윤제용 대한상하수도학회 2003 상하수도학회지 Vol.17 No.1

This study was conducted to investigate the characteristics of disinfection by-products formation potential (DBPFPs) of dissolved organics. Dissolved organics in raw water were separated into two fractions ((1) hydrophilic and (2) hydrophobic) for the measurement of DBPs. Three types of DBPs (trihalomethanes (THMs), haloacetic acids (HAAs), and total organic halides (TOX)) were measured at 3days and 7days incubation time. Sample waters were collected from the Han River and the Wonchun Reservoir. Two major findings are as follows. First, THMFPs/DOC, HAAFPs/DOC and TOXFPs/DOC in the hydrophilic organic component had a level of lower value than those of the hydrophobic organic component. Brominated THMs and bominated HAAs were not found in the chlorinated hydrophobic organic component. Second, the magnitude of HAAFPs/DOC were higher than that of THMFPs/DOC in both hydrophilic and hydrophobic organic components. This results support the reported observation that HAAs formations were higher than that of THMs in chlorinated drinking water. THMFPs and HAAFPs comprised 53-91% of TOXFP.

무산소성 운동이 혈청 지질 농도 및 면역세포 반응에 미치는 영향

조영주,변재철,홍석민 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.14 No.2

The purpose of this study was to determine serum lipids and immune responses on the anaerobic exercise. Serum total cholesterol, HDL-C, LDL-C and plasma triglyceride, percentages of WBC and their subsets, natural killer cells were evaluated between before and after the anaerobic power. All subjects were high trained male athletes (19-24 years of age). Results were expressed as mean and standard deviations. One-way ANOVA repeated measure was used to compare the all parameters between before and after the anaerobic power test. All significant differences were set at α=.05. In this study, comparison of anaerobic power(Nm/%BW) was higher in soccer players than ssirum and judo players (p<.05). The percentage of WBC, monocyte, eosinophil and basophil were no significant differences between before and after anaerobic exercise. There were increased on neutrophil, lymphocyte after anaerobic exercise in three groups. (p<.01, p<.001, respectively). Also, there were significant differences on T cell, B cell, NK cell between before and after anaerobic exercise (p<.001).