한의학의 미병 개념 및 변증과의 연관성에 대한 고찰

이재철,김상혁,이영섭,장은수,이시우,Lee, Jae-Chul,Kim, Sang-Hyuk,Lee, Young-Seop,Jang, Eun-Su,Lee, Si-Woo 대한예방한의학회 2012 대한예방한의학회지 Vol.16 No.2

Objectives : This work is aimed to reveal the relations between concepts of subhealth(mibyung) and Korean medicine patterns. Methods : We carried out a literature searching on Oasis, RISS, DBpia, Pubmed to summarize concepts of Mibyung. CNKI Searching also was performed with keyword related to mibyung(未病), subhealth(亞健康) and syndrome. Results : Korea, China and Japan have different concepts of mibyung. China's mibyung concept is relatively broader and wide which includes healthy, subhealth, development of disease and recurrence avoid. In contrast, Korea and Japan's mibyung concepts are focused on China's subhealth. Though Mibyung's patterns are varied widely depends on studies, China's studies of subhealth and TCM patterns showed that Deficiency patterns are diagnosed at high frequency in clinical study and literature study. Conclusions : This work could contribute to further study of subhealth(mibyung) and their relations to patterns, diagnostic methods and treatment efficacy.

스포츠 동영상의 모자익을 위한 이동계수의 계층적 향상

이재철,이수종,고영훈,노흥식,이완주,Lee, Jae-Cheol,Lee, Soo-Jong,Ko, Young-Hoon,Noh, Heung-Sik,Lee Wan-Ju 한국정보기술전략혁신학회 2004 情報學硏究 Vol.7 No.2

Sports scene is characterized by large amount of global motion due to pan and zoom of camera motion, and includes many small objects moving independently. Some short period of sports games is thrilling to televiewers, and important to producers. At the same time that kinds of scenes exhibit exceptionally dynamic motions and it is very difficult to analyze the motions with conventional algorithms. In this thesis, several algorithms are proposed for global motion analysis on these dynamic scenes. It is shown that proposed algorithms worked well for motion compensation and panorama synthesis. When cascading the inter frame motions, accumulated errors are unavoidable. In order to minimize these errors, interpolation method of motion vectors is introduced. Affined transform or perspective projection transform is regarded as a square matrix, which can be factorized into small amount of motion vectors. To solve factorization problem, we preposed the adaptation of Newton Raphson method into vector and matrix form, which is also computationally efficient. Combining multi frame motion estimation and the corresponding interpolation in hierarchical manner enhancement algorithm of motion parameters is proposed, which is suitable for motion compensation and panorama synthesis. The proposed algorithms are suitable for special effect rendering for broadcast system, video indexing, tracking in complex scenes, and other fields requiring global motion estimation.

전문가 진단을 통한 체질별 건강수준과 설문결과의 연관성 연구

이재철,이혜정,이유정,김근호,김상혁,이시우,장은수,김종열,Lee, Jae-Chul,Lee, Hae-Jung,Lee, Yu-Jung,Kim, Keun-Ho,Kim, Sang-Hyuk,Lee, Si-Woo,Jang, Eun-Su,Kim, Jong-Yeol 사상체질의학회 2011 사상체질의학회지 Vol.23 No.1

1. Objectives: We report the relation between the questionnaire and the health state on the Sasang Constitution. 2. Methods: We carried out a clinical test, in which 2 Oriental medical doctors participated to diagnose health state in each Sasang Constitution with 239 subjects. The subjects were divided into 3 subgroups, which are allocated to healthy group, poor health group and disease group. 3. Results: We extracted 4 questions for Taeeumin, 5 questions for Soyangin and 3 questions for Soeumin from the whole 98 questions respectively. Soyangin and Taeeumin share a same question that shows significant difference by health status. For the statistical analysis, we used a Chi-square test. As a result, we found out that Taeeumin showed different distributions of answers in direct/indirect characteristic, perspiration, frequent urination, regular defecation. According to the health status Soyangin showed the different distribution of the answers in color of urination, frequent urination, mouth dryness, abnormal perspiration, discomfort of head. Soeumin showed the different distribution of the answers in cold and chilly feel of abdomen, digestion status and cause of digestion problems when body condition gets worse. 4. Conclusions: This is the first work which reports the relatedness between Questionnaire and Health State in each Sasang Constitutions by an objective clinical test. We found out that several questions have different distributions by health status in each Sasang Constitution. These extracted questions are categorized not only by Wansilmoobyung(완실무병), but also by other symptoms and body status.

IFC의 건축구조정보 표현

이재철,Lee, Jae-Cheol 한국전산구조공학회 2014 전산구조공학 Vol.27 No.3

부분재해석 기법을 이용한 고층건물 횡변위제어

이재철,김치경,Lee, Jae-Cheol,Kim, Chee-Kyeong 한국전산구조공학회 2009 한국전산구조공학회논문집 Vol.22 No.1

본 논문은 부재 단위의 강성 재설계를 통해 전역 자유도 변위의 정량적 조절이 가능한 변위조절 기법의 개발을 목적으로 하고 있다. 이를 위해 부분적 강성변경이 발생했을 때 전체 구조물을 재해석하지 않고 관심 있는 특정 위치의 변위와 부재력만을 실시간 응답수준에서 재계산할 수 있는 부분재해석 기법을 적용하였다. 부분재해석 기법은 복잡한 미분계산이나 반복적인 구조해석을 수행하지 않아도 되는 단순한 기본개념의 기법으로서 계산이 효율적이고 강성변경 후의 변위를 바탕으로 변위에 대한 민감도를 계산하기에 수렴 속도가 빠른 장점을 가진다. 부분재해석 기법을 통해 전역 자유도에 대한 강성 변경 부재의 변위기여도를 계산하고 변위기여도에 따라 해당 부재의 강성을 변경시킴으로써 반복적 구조해석이나 민감도 해석 없이 특정 변위를 최소의 물량만으로 정량적으로 제어하는 변위조절 설계법을 제시하였다. 예제를 통한 검증결과, 부분재해석 기법이 고층건물의 횡변위제어에 효과적으로 활용될 수 있음을 확인하였다. This paper alined at the development of a lateral drift control method that is able to quantitatively control the lateral drift of global node. For this, we applied an efficient partial reanalysis algorithm. By using this algorithm, we could recalculate the displacement and member force of the specific node without reanalyzing the entire structure when member stiffness changes partially. The theoretical concepts of the algorithm are so simple that it is not necessary to solve the complicate differential equation or to repeat the analysis of entire structure. The proposed method calculates the drift contribution of each member for the global displacement according to the variation of section sizes by using the algorithm. Then by changing the member sizes as the order of drift contribution, we could control the lateral drift of global node with a minimum quantity of materials. 20 story braced frame structure system is presented to illustrate the usefulness of proposed method. It is shown that the proposed method is very effective in lateral drift control and the results obtained by proposed method are consistent with those of commercial analysis program.

2006년 봄철 광양만 해류의 구조와 변동

이재철,김정창,Lee, Jae-Chul,Kim, Jeong-Chang 한국해양학회 2007 바다 Vol.12 No.3

광양만의 순환을 이해하기 위하여 2006년 봄철에 수심이 가장 깊은 두 지점을 선정하여 ADCP가 장착된 모니터링 부표 2대를 이용하여 유속관측을 하였다. 두 지점에서 공통적으로 북향류가 지배적인데, 이는 서쪽의 남향류를 동반하는 반시계 방향의 순환 이 있음을 뒷받침 하고 있다. 남쪽에서는 14 m 수심에서 유향이 반전되는 2층 구조가 뚜렷하며 저층의 북향류는 바닥에 가까운 36 m 수심까지 증가한다. 북쪽 지점에서는 북향류가 더욱 강해져서 북쪽의 단면적 감소에 따른 해류의 가속 효과가 있으며 상층부에서도 북향류가 우세하다. EOF 분석을 통한 연직구조에 있어서 첫 번째 모드는 북쪽 부표에서 전체 분산의 74%인데 비하여 남쪽 부표에서는 67%로 감소하고 상대적으로 2층 구조의 비중이 크다. 반시계 방향의 순환과 관련된 북향류의 전형적인 유속은 약 10 cm/s이다. 여기에 중첩되는 변동성으로서 국지적인 바람의 영향은 거의 받지 않는 반면에 동-서 방향의 바람에 의한 외해의 에크만 수송과 관련된 비국지적 영향은 주로 풍속이 강할 경우에 나타난다. Two monitoring buoys equipped with ADCP were deployed at the deepest positions along the trough of the central Gwangyang Bay in spring 2006 in order to study the circulation in the bay. Northward velocity is commonly dominant at both stations located in the eastern part of the channel, which supports the cyclonic circulation accompanied by the southward flow in the western part. The southern station has a distinct two-layer structure with current reversal at 14 m depth and increasing northward velocity in the lower layer to 36 m depth close to the bottom. At the northern station the northward flow becomes accelerated due to the decrease in the cross-sectional area and this northward current is dominant even in the upper layer. In the modal structure from the EOF analysis, the first mode has 74% of total variance at the northern station whereas it is 67% but the baroclinic portion increases at the southern station. The typical northward velocity is about 10 cm/s which is associated with the cyclonic circulation. Subtidal variability due to the local wind effect is negligible, but the nonlocal response associated with offshore Ekman flux by the zonal wind is found during strong wind events.

해운대 이안류 발생 시 수영만의 물리환경 - 2009년 8월

이재철,김대현,Lee, J.C.,Kim, D.H. 한국해양학회 2010 바다 Vol.15 No.3

수영만에 설치된 모니터링 부이에서 관측된 해류, 바람, 파고자료와 부산항의 조석자료를 이용하여 강한 이안류가 발생했던 2009년 8월 13~15일의 물리환경을 분석하였다. 수영만의 조류는 단주기 해류성분과 비슷한 크기를 가지며 대조-소조에 따른 변화를 보인다. 이안류가 발생했을 때 북동풍이 강하게 불고 조류와 해류가 해운대 해안 쪽 방향으로 중첩되었다는 공통점이 있고, 8월 14일 오후에 이안류가 없었을 때는 파고와 조석은 유사한 조건이었지만 조류와 해류가 거의 반대방향이었다. 강한 바람은 큰 파랑을 동반하여 이안류 발생의 기본조건을 조성하지만 만 내의 해류에 미치는 국지적인 영향은 비교적 작다. 수영만에 인접한 세 해수욕장 중에서 해운대에서만 강한 이안류가 나타나는 데에는 해운대 중앙부의 특이하게 얕은 수중언덕이 외해에서 들어오는 파랑, 해류, 조류를 감쇠시키는 효과가 중요할 것으로 생각된다. A data set of current, wind and wave height measured at the monitoring buoy and sea level at Busan harbor were analyzed to explain the physical conditions during the strong rip current events at Haeundae Beach of Suyeong Bay during 13~15 August 2009. Tidal current, with spring-neap variations, has similar average speed to the short-term non-tidal currents. The common features at the time of rip currents are the strong northeasterly wind and superposition of tidal and non-tidal currents both flowing toward the coast. However on 14 August when the rip current did not occur, tide and wave height were similar to the rip-current cases but the tidal and non-tidal current were to nearly opposite directions. While strong winds produce large waves thus the basic condition for rip current but its influence on the local circulation in the bay is relatively small. Of the three adjacent beaches, only at Haeundae the rip currents are reported. This difference may be due to the unique bottom topography featured by underwater hill in the central region off Haeundae which can decay the incoming waves, tides and currents to intensify the rip current.

夏季 韓國 南東海域에서 湧昇과 關聯된 바람, 海水面 및 表層水溫의 變化 TEVARIATIONS OF SEA LEVEL AND SEA SURFACE TEPERATURE ASSOCIATED WITH WIND -INDUCED UPWELLING IN THE SOUTH

이재철,Lee, Jae Chul 한국해양학회 1983 韓國海洋學會誌 Vol.18 No.2

Extensive wind, sea level and sea surface temperature (SST) data collected along the east coast of Korea in 1973-1979 were used to ascribe the variations of sea level and SST associated with wind forcing during summer. Alongshore components of wind were dominant but the offshore components were little significance in the southeast coast in summer. The variations in SST and sea level adjusted barometricallyagreed with the upwelling-downwelling processes and showed a rapid response to wind.Appearance of cold water to the surface in the upwelling region concurred well with te periods of positive y-component wind when the tangential line at Ulgi was takem as the y-axis. In general, SST at Ulgi and Gampo as well as the adjusted sea level at Pohang, Ulsan and Busan decreased significantly when strong winds favorable for upwelling persisted for more then three days whereas they increased during the relaxation or unfavorable periods. The period of an upwelling event, on the average, was about 10 days and the mean speed of alongshore sind was 4.0m/sec.

난치성 결핵 환자의 단핵구에서 IFN-$\gamma$ 활성화 효과 및 IFN-$\gamma$ 수용체의 숫적 변화에 대한 연구

이재철,유철규,이춘택,김영환,한성구,심영수,Lee, Jae-Cheol,Yoo, Chul-Gyu,Lee, Choon-Taek,Kim, Young-Whan,Han, Sung-Koo,Shim, Young-Soo 대한결핵및호흡기학회 1999 Tuberculosis and Respiratory Diseases Vol.47 No.3

연구배경: 결핵에 대한 면역 반응은 T-림프구와 단핵 식세포를 주축으로 하는 세포성 면역 반응이 주률 이루는데 여기에 IFN-$\gamma$와 TNF-$\alpha$등의 cytokine 이 관여하고 있다. IFN-$\gamma$는 주로 T-림프구에서 분비되어 활성화된 단핵구에서의 TNF-$\alpha$생성을 증가시키는 기전을 통해 결핵균 증식을 억제하고 치유에 이르는 과정을 매개하는 것으로 알려져 있다. 효과적인 화학요법에도 불구하고 난치성 결핵으로 이행하는 기전에 IFN-$\gamma$가 관여하는지 규명하고자 본 연구를 시행하였다. 대상 및 방법: 정상 대조군과 최근 결핵으로 진단받아 치료를 시작한 환자, 난치성 결핵 환자에서 혈액을 채취하여 단핵구를 분리하고 아무런 자극을 하지 않은 경우, 12시간 LPS($l{\mu}g/ml$)만으로 자극을 한 경우, IFN-$\gamma$($2{\mu}g/ml$)로 2시간 전처치한 후 12 시간 LPS 자극한 경우로 니누어 TNF-$\alpha$의 농도를 측정, IFN-$\gamma$ 활성화 효과에 변화가 있는지를 살펴보았고 IFN-$\gamma$ 수용체 항제를 이용, IFN-$\gamma$ 활성화 효과의 변화가 IFN-$\gamma$ 수용체의 숫적 변화와 관련이 있는지를 확인하였다. 결과: IFN-$\gamma$ 활성화 효과를 알아보기 위해 LPS 만으로 지극한 경우와 IFN-$\gamma$ 전처치 후 LPS로 자극한 경우에 생성된 TNF-$\alpha$의 비를 구하여 보았을 때 정상 대조군 $13.5{\pm}7.6$, 최근 결핵환자로 진단받은 군 $10.8{\pm}6.4$, 난치성 결핵 환자군 $6.7{\pm}3.9$의 결과를 보였다. 난치성 결핵환자군의 경우 정상대조군에 비해 IFN-$\gamma$의 활성화 효과가 통계적으로 유의하게 감소되어 있음을 알 수 있었다 (p=0.002). IFN-$\gamma$ 수용체수의 감소는 대상 환자 중 난치성 결핵 환자 1명에서 관찰되었다. 결론: 난치성 결핵으로의 이행에 있어 단핵구에서의 IFN-$\gamma$ 활성화 효과의 감소가 중요한 역할을 할 것으로 생각되며 IFN-$\gamma$ 활성화 효과의 감소는 일부 환자의 경우, IFN-$\gamma$ 수용체의 감소와 관련되어 생기는 것으로 판단된다. Background: IFN-$\gamma$ plays an important role in host response to intracellular organisms such as mycobacterium. Human infection with mycobacterium leads to a wide variety of outcomes, ranging from asymptomatic infection to widespread and rapidly fatal disease. Recent reports suggest that alteration of the function of IFN-$\gamma$ caused by a defective IFN-$\gamma$ receptor gene can explain different host response to mycobacterium. In this study, we investigated the role of IFN-$\gamma$ in the development of chronic refractory tuberculosis. Methods: The LPS-induced TNF-$\alpha$ production with or without IFN-$\gamma$ priming was compared by using monocytes taken from recently diagnosed tuberculosis, chronic refractory tuberculosis patients and controls. And the IFN-$\gamma$ receptor was measured by indirect fluorescent antibody technique to know whether change in the priming effect of IFN-$\gamma$ is related to IFN-$\gamma$ receptor deficiency or not. Results: The ratio of TNF-$\alpha$ produced in response to stimulation with INF-$\gamma$ and LPS to LPS alone was $13.5{\pm}7.6$ in controls, $10.8{\pm}6.4$ in recently diagnosed tuberculosis patients and $6.7{\pm}3.9$ in chronic refractory tuberculosis patients. The priming effect of IFN-$\gamma$ significantly decreased in chronic refractory tuberculosis patients compared with that in controls(p=0.002). However, IFN-$\gamma$ receptor deficiency was detected in one of chronic refractory tuberculosis patients. Conclusion: The decrease of the priming effect of IFN-$\gamma$ may play an important role in the development of chronic refractory tuberculosis, and in some patients, this may be related to the IFN-$\gamma$ receptor deficiency.

東醫寶鑑 中 厚朴이 主藥으로 配伍된 方劑의 活用에 대한 考察

이재철,정명,임규상,윤용갑,Lee, Jaecheol,Jung, Myung,Lim, Kyusang,Yun, Yonggab 대한한의학방제학회 2015 大韓韓醫學方劑學會誌 Vol.23 No.1

This report describes the remedial fields, symptoms, pathology, dosage, prescriptional constitution of 40 prescriptions related to the use of Magnoliae Cortex main blended prescriptions from Dongeuibogam. The following conclusions were reached through investigations on the prescriptions that use Magnoliae Cortex as a key component. Prescriptions that Magnoliae Cortex was taken as a monarch drug are utilized for 13 therapeutic purposes, for example, abdominal dropsy, abdominal lump. In particular, 27.5% of the prescriptions appear in the chapter of abdominal dropsy. Prescriptions that utilize Magnoliae Cortex as the main ingredient are used in the treatment of abdominal lump, abdominal dropsy. Magnoliae Cortex is used in pathogenic factors such as cold, congestion of Qi and used in pathology related to digestive system. The dosage of Magnoliae Cortex is 2pun(about 0.75g) to 3don(about 11.25 g), however 1don(about 3.75g) has been taken the most for clinical application. Pyeongwisan is the most useful base prescription which use the Magnoliae Cortex as the main component.