• Title/Summary/Keyword: Lew

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A Study on the Configuring Process of Secondary Mathematically Gifted about the Hyperbolic Plane Tessellation Using Dynamic Geometry Software (GSP의 쌍곡원반모형을 활용한 중학교 수학영재 학생들의 쌍곡평면 테셀레이션 구성과정에 관한 연구)

  • Lew, Hee Chan;Lee, Eun Joo
    • School Mathematics
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    • v.15 no.4
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    • pp.957-973
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    • 2013
  • This study analyzed Secondary Mathematically Gifted' mathematical thinking processes demonstrated from the activities. They configured regular triangle tessellations in the Non-Euclidean hyperbolic disk model. The students constructed the figure and transformation to construct the tessellation in the poincare disk. gsp file which is the dynamic geometric environmen, The students were to explore the characteristics of the hyperbolic segments, construct an equilateral triangle and inversion. In this process, a variety of strategic thinking process appeared and they recognized to the Non-Euclidean geometric system.

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A Study of Mathematically Gifted Middle School Students' of Mathematical Thinking and the Teacher's Role in Teaching and Learning about the Central Projection and Perspective Drawing (중심사영과 투시도의 작도 학습에서 나타나는 중학교 수학영재들의 수학적 사고특성과 교사의 역할)

  • Lew, Hee Chan;Kang, Kyung Min
    • School Mathematics
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    • v.15 no.4
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    • pp.921-940
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    • 2013
  • This study is to analyze mathematically gifted middle school students' characteristics of mathematical thinking and the teacher's role in teaching and learning about the central projection and perspective drawing. And it will help to develop teaching and learning materials for the mathematically gifted. The result of this study is as followings : mathematically gifted middle school students show the various characteristics of mathematical thinking like as intuitive insight, generalization, logical thinking & mathematical abstraction and so on, and the teacher plays roles as instructional designer, facilitator, technical assistant and counselor.

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A Case Report of Integrative Medicine Therapy about Patient Suspected Acute Guillain-Barre Syndrome (급성 Guiilain-Barre Syndrome 추정 환자 동서협진 치험 1례)

  • So, Hyung-Jin;Son, Yoon-Jung;Lee, Beom-Joon;Rho, Byoung-Wan;Lew, Jae-Hwan;Heo, Hong
    • The Journal of Korean Oriental Chronic Disease
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    • v.10 no.1
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    • pp.53-61
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    • 2005
  • Guillain-Barre syndrome (GBS) is a group of autoimmune syndromes consisting of demyelinating and acute axonal degenerating forms of the disease. Typically, Gullain-Barre syndrome can be diagnosed from the patient's symptoms and physical examination such as the rapid onset of weakness, paralysis and loss of reflexes. In most patients, resolution is complete or near complete. Treatment consists of supportive care, ventilatory management (in about one third of patients), and specific therapy with intravenous immunoglobulin or plasmapheresis. This clinical report is about suspected acute severe Guillain-Barre syndrome patient, 61-year-old man had quadriplegia, facial palsy, dysphasia, respiratory failure. After 5 weeks of East-West integrative medicine therapy - Conventional Conservative therapy(plasmaphresis and intravenous immunoglobulin) and Korean traditional medicine(Sasang medicine and acupuncture treatment) - most symptoms improved.

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Clinical and Mycological Studies on Tinea cruris (완선(頑癬)의 임상(臨床) 및 균학적(菌學的) 연구(硏究))

  • Lew, Hee-Joon;Kim, Hong-Sik
    • The Korean Journal of Mycology
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    • v.8 no.3
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    • pp.143-148
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    • 1980
  • The authors performed clinical and mycological studies on Tinea cruris of 842 outpatients who had visited the dermatology clinic of Seoul National University Hospital from 1975 to 1979. 1) The incidence of Tinea cruris was 4.4% in maximum and 3.0% in minimum of the total superficial mycotic diseases cases, so there are no remarkable changes of the yearly prevalence rate. 2) Tinea cruris was more frequent among males, and the male cases were 15.2 times higher than those of female cases. 3) By the monthly distribution, Tinea cruris shows most high in summer season (June, July and August). 4) The age distribution group for Tinea cruris varied from the first to the eighth decade, but most of them were in their third decade. 5) Concurrent infection of Tinea cruris with other types of dermatophytoses(Tinea) was noted in 19.0% of the cases. Patients with Tinea cruris and Tinea pedis were most highly observed in 51.3%, and on next. Tinea cruris and Tinea corporis 25.6% in all of the concurrent infection cases. 6) The strains were identified by culture on ordinary Sabouraud's glucose agar media and abtained three species and 99 strains. a) Trichophyton rubrum was most common causative organism of Tinea cruris. Trichophyton rubrum was isolated 64 strains (64.6%). b) Trichophyton mentagrophytes was isolated 27 stains (27.3%) and Epidermophyton floccosum was 8 strains (8.1%).

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Demand Paging Method Using Improved Algorithms on Non-OS Embedded System (Non-OS 임베디드 시스템에서 개선된 알고리즘을 적용한 요구 페이징 기법)

  • Lew, Kyeung Seek;Jeon, Chang Kyu;Kim, Yong Deak
    • IEMEK Journal of Embedded Systems and Applications
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    • v.5 no.4
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    • pp.225-233
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    • 2010
  • In this paper, we try to improve the performance of the demand paging loader suggested to use the demand paging way that is not based on operating system. The demand paging switching strategy used in the existing operating system can know the recently used pages by running multi-processing. Then, based on it, some page switching strategies have been made for the recently used pages or the frequently demanded pages. However, the strategies based on operating system cannot be applied in single processing that is not based on operating system because any context switching never occur on the single processing. So, this paper is trying to suggest the demand paging switching strategies that can be applied in paging loader running in single process. In the Return-Prediction-Algorithm, we saw the improved performance in the program that the function call occurred frequently in a long distance. And then, in the Most-Frequently-Used-Page-Remain-Algorithm, we saw the improved performance in the program that the references frequently occurred for the particular pages. Likewise, it had an enormous effect on keeping the memory reduction performance by the demand paging and reducing the running time delay at the same time.

Treatment of Latent Tuberculosis Infection in Korea (국내에서 잠복결핵의 치료)

  • Shim, Tae Sun;Koh, Won Jung;Yim, Jae Joon;Lew, Woo Jin
    • Tuberculosis and Respiratory Diseases
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    • v.65 no.2
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    • pp.79-90
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    • 2008
  • 국내에서 아직 잠복결핵 치료 대상 및 치료 방법에 대한 명확한 지침이 부족한 실정이며 이를 위해서는 잠복감염의 재활성화 혹은 새로운 감염이 어느 정도 결핵 발병의 원인이 되는지에 대한 연구가 선행되어야 한다. 그렇지만 발병의 위험이 높은 군을 선정하여 잠복결핵의 치료 대상으로 정하는 것이 타당할 것이며, 현재는 HIV 감염자, 전염성 결핵환자 가족 중 6세 미만의 아동, 중학생 및 고등학생에서의 집단 발병시 감염된 것으로 판정된 학생 및 종양괴사인자(tumor necrosis factor, TNF) 길항제 사용 예정인 잠복결핵 환자가 잠복결핵의 치료 대상으로 제한되어 있다. 향후에는 잠복결핵 치료 대상자의 확대가 필요할 것으로 생각되며, 치료방법 또한 isoniazid (INH) 단독 요법 이외에 rifampicin (RMP)을 포함하는 단기 요법의 사용도 고려하여야 하겠다. 현재 외국에서 잠복결핵의 치료법으로 권고되고 있는 것은 INH 6~9개월, RMP 4~6개월, INH/RMP 3개월 등이다. 과거부터 잠복결핵의 진단에 사용되어 온투베르쿨린 검사 외에 체외 인터페론감마 검사가 새로이 개발되면서 잠복결핵의 진단이 더 정확해진다면 이에 따라 잠복결핵 치료 방침도 수정될 가능성이 있으므로 새로운 검사법을 이용한 꾸준한 연구가 필요할 것이다.

A Case Report about Diarrhea of Soeumin Caused by Tube Feeding Treated with Korean Medicinal Treatment (경관 영양으로 유발된 소음인 설사에 관한 한방 처치 1례)

  • Ha, Jeong-been;Lee, Su-jung;Lew, Jae-hwan
    • The Journal of Internal Korean Medicine
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    • v.41 no.2
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    • pp.150-158
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    • 2020
  • Objectives: This study aimed to investigate the effect of Soeumin-Seonghyangjeongki-san on diarrhea with tube feeding causing mental deterioration induced by subdural hemorrhage (SDH) in an 83-year-old male patient. Methods: The patient was treated with Soeumin-Seonghyangjeongki-san. His symptoms were assessed using the Bristol stool form index, the King's Stool Chart, and records of stool state. The treatment was executed for one week from September 10, 2018 to September 16, 2018. The patient was observed during that same period. Results: After being treated with Soeumin-Seonghyangjeongki-san for seven days, the patient's diarrhea symptoms were evaluated using the Bristol stool form index, the King's Stool Chart, and records of stool state. After the treatment, the results of all three evaluation methods showed that the patient's condition had improved. Conclusions: The results suggest that Soeumin-Seonghyangjeongki-san can be a valuable option for treating diarrhea with tube feeding causing mental deterioration induced by SDH.

Prediction of the Added Mass of a 50-meter Class Airship with Empennage (꼬리날개를 고려한 50m급 비행선의 부가 질량 예측)

  • Ok Honam;Lew Jae-Moon;Lee Yung-Gyo;Lee Jinwoo
    • Proceedings of the KSME Conference
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    • 2002.08a
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    • pp.799-802
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    • 2002
  • Korea Aerospace Research Institute has been developing a 50-meter class airship to demonstrate the technology to be used in the development of a stratospheric airship, and importance of accurate prediction of the dynamic behavior of an airship before flight test is widely conceived. The added mass has large impact on the dynamic characteristics of an airship unlike for an airplane and the added mass of the airship with empennage is predicted in this paper. At first, the usability of the strip theory is examined which integrates the analytic two dimensional results in the cross section along the longitudinal axis. A panel method with the surface distribution of sources is developed and its validity is also examined. Finally, the panel method with both source and doublet distributions is implemented, and it is validated and applied for the calculation of the added mass of a 50-meter class airship. Using the methods developed, the influence of empennage and control surface deflection on the added mass property of the airship is studied.

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Effect of Cognitive-Behavioral Treatment in Children with Anxiety Disorder: A Preliminary Study (소아기 불안장애의 인지행동치료 효과 : 예비 연구)

  • Song, Dong-Ho;Ha, Eun-Hye;Oh, Wook-Jin;Ko, Kwang-Bum;Lew, Young-Min
    • Journal of the Korean Academy of Child and Adolescent Psychiatry
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    • v.19 no.3
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    • pp.182-189
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    • 2008
  • Objectives: This study aimed to evaluate preliminarily the clinical effects of cognitive-behavioral treatment in children with anxiety disorders. Methods: Subjects were 11 children between 2nd and 6th grade with anxiety disorder. All subjects were diagnosed through Kiddie-Schedule for Affective Disorder and Schizophrenia Present and Lifetime Version (K-SADS-PL) interview. The CBT program consisted of sessions once a week (60min/session) for 14 weeks with parent education. Results: Children and parents reported significantly improved social skills, social competence and decreased anxiety. However, there were no significant changes in children's negative thoughts and subjective depressive symptoms. Conclusion: Cognitive-behavioral treatment is expected to be effective in children with anxiety disorders such as generalized anxiety disorder, phobia, separation anxiety disorder, and obsessive-compulsive disorder.

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Extraction of the License Plate Region Using HoG and AdaBoost (HoG와 AdaBoost를 이용한 번호판 영역 추출)

  • Lew, Sheen;Yi, Cui-Sheng;Lee, Wan-Joo;Lee, Byeong-Rae;Min, Kyoung-Won;Kang, Hyun-Chul
    • Journal of Digital Contents Society
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    • v.10 no.4
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    • pp.597-604
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    • 2009
  • For the improvement of license plate recognition system, correct extraction of a license plate region as well as character recognition is important. In this paper, with the analysis and classification of the error patterns in the process of plate region extraction, we tried to improve the extraction of the region using HoG(histogram of gradient) features and Adaboost. The results show that the HoG feature is robust to the noise and various types of the plates, and also is very effective to extract the region failed before.

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