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- 저자 : 강동우(Dong-Woo Kang) (검색결과 173 건)
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강동우,이성우,김현중,Kang, Dong-Woo,Lee, Seong-Woo,Kim, Hyun-Joong 한국토지주택공사 토지주택연구원 2012 토지주택연구 Vol.3 No.1
The Schwabe's law explains the housing demand weighs more on demographic factors rather than on socio-economic factors as societies achieve higher level of economic development. Based on Schwabe's law, the present study constructs a hypotheses to analyze changes of housing demand with respect to housing tenure change in Seoul Metropolitan Area (SMA) during the periods of 1980 to 2005. To test the hypotheses, the authors take advantage of the Population and Housing Census 2% data from 1980 to 2005. The authors apply binary probit with decomposition method to verify our hypotheses. The authors found that the influence of socio-economic factors on housing tenure have been weakened in the housing market during the periods of 1980 to 2005. On the other hand, the relative influence of demographic factors have been strengthened in the housing market during the periods. The present study concludes that housing demand in the SMA have been dramatically changed from socio-economic characteristics to demographic factors to decide housing tenure during the periods, which confirms the hypotheses of the present study.
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강동우,최영희,이정흠,정영조,Kang, Dong-Woo,Choi, Young-Hee,Lee, Jung-Hum,Chung, Young-Cho 한국정신신체의학회 1996 정신신체의학 Vol.4 No.2
In spite of its prominent effects on reduction of panic attacks and preveniton of relapse, cognitive-behavioral therapy(CBT) for panic disorder is seldomly utilized and studied in this country. for the past year, authors have modified CBT program for panic disorder that was based on PCT(panic control program) designed by Dr. Barlow and Dr. Craske. Our program is composed of informational component, somatic management skills, cognitive restructuring, interoceptive exposure and in vivo exposure. One patient has significantly improved by this program and satisfied with the treatment result. The aim of this article is to present our experience of treating a panic patient with CBT.
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멀티프라이머리 디스플레이를 위한 3D-LUT 색 신호 분리 방법
강동우,조양호,김윤태,최원희,하영호,Kang Dong-Woo,Cho Yang-Ho,Kim Yun-Tae,Choe Won-Hee,Ha Yeong-Ho 대한전자공학회 2005 電子工學會論文誌-SP (Signal processing) Vol.42 No.6
본 논문에서는 멀티 프라이머리 디스플레이(multi-primary display; MPD)에서 색 재현을 위해 선형 LAB 색공간에서 3차원 took-up-table(3D-LUT)을 이용한 색신호 분리방법을 제안한다. 제안한 방법은 인간 지각의 3가지 속성을 반영하는 선형 LAB 색공간에서 작성된 MPD 색역의 경계를 적은 용량의 메모리를 가지는 3D-LUT로 작성한다. 이때 색역 경계점의 자극치와 MPD의 색신호의 선형관계를 이용하여 3D-LUT에는 휘도 및 색상에 대한 채도와 색신호 조합이 저장된다. 작성된 3D-LUT에 기반하여 입력 자극치에 대응하는 MPD 색신호를 주변 색역 경계점의 색신호 변화를 고려하여 색역 경계점과 입력의 채도비로 보간한다. 그 결과, MPD 색신호가 연속적 계조를 가지도록 하였다. 또한 선형 LAB 색공간에서 색역 경계 LUT를 사용하여 연산의 복잡도를 감소시키고 MPD의 부드러운 색신호 변화를 유도하였다. This paper proposes the color decomposition method for multi-primary display (MPD) using a 3-dimensional look-up-table (3D-LUT) in a linearized LAB space. The proposed method decomposes conventional three-primary colors into the multi-primary control values of a display device under constraints of tristimulus match. To reproduce images on the MPD, the color signals should be estimated from a device-independent color space, such as CIEXYZ and CIELAB. In this paper, the linearized LAB space is used due to its linearity and additivity in color conversion. The proposed method constructs the 3-D LUT, which contain gamut boundary information to calculate color signals of the MPD. For the image reproduction, standard RGB or CIEXYZ is transformed to the linearized LAB and then hue and chroma are computed to refer to the 3D-LUT. In the linearlized LAB space, the color signals of a gamut boundary point with the same lightness and hue of an input point are calculated. Also, color signals of a point on gray axis are calculated with the same lightness of an input. With gamut boundary points and input point, color signals of the input points are obtained with the chroma ratio divided by the chroma of the gamut boundary point. Specially, for the hue change, neighboring boundary points are employed. As a result the proposed method guarantees the continuity of color signals and computational efficiency, and requires less amount of memory.
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뇌파의 임상적 유용성 : 뇌파소견과 뇌전산화 단층촬영 검사 및 뇌자기공명 영상검사 소견을 비교하여
강동우,이영호,최영희,정영조,Kang, Dong-Woo,Lee, Young-Ho,Choi, Young-Hee,Chung, Young-Cho 대한수면의학회 1996 수면·정신생리 Vol.3 No.2
To demonstrate the clinical usefulness of electroencephalography (EEG) and factors increasing the usefulness of EEG, the authors evaluated each relationship between EEG related factors and clinical variables, and neuroimaging studies (CT and MRI)-related factors, and factors which are related with routine neurological examination for 207 patients who had been evaluated with both of EEG and neuroimaging study(CT or/and MRI). The results were as follows: 1) Abnormality of EEG findings had significant relationships with chief complaints, diagnosis, medication use, seizure attack, pathological reflex, and level of consciousness. However there were no significant correlations between abnormality of EEG findings and neuroimaging studies (CT and MRI)- related factors. 2) Laterality of EEG findings had significant relationships with abnormality, laterality, and focality of CT findings, and also with abnormality of MRI findings. But there were no significant correlations between laterality of EEG findings and clinical variables, and neurological examination-related factors. 3) Anterior-posterior distribution of EEG findings was significantly related with medication use. 4) Focality of EEG findings had significant relationships with sex, sensory dysfunction sign, and cerebellar dysfunction sign. But there were no significant correlations between focality of EEG findings and neuroimaging studies(CT and MRI) related factors. 5) Abnormal EEG pattern had significant correlations with various factors, such as age, chief complaints, duration from onset of symptom to taking MRI, seizure attack, abnormality and nature of lesion in CT findings, cortical atrophy in MRI findings, motor dysfunction sign, sensory dysfunction sign, and pathological reflex. 6) With abnormality on sleep activation, age, age of onset, seizure attack, ventricular enlargement in CT findings, and abnormality of MRI findings were significantly correlated. 7) With abnormality on hyperventilation activation, duration of illness and laterality of MRI findings were significantly correlated. Above results may suggest that abnormality of EEG findings is more closely related with functional change of the brain than structural changes of the brain and laterality of EEG findings is vice versa. And also that medication use has an influence on anterior versus posterior distribution of EEG findings and focality of EEG findings is not related with structural changes of the brain. Activation with sleep may be effective to show age differences and provocation of seizure activity and hyperventilation may be effective to detect the abnormal EEG findings by cerebrovascular insufficiency.
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유방암 환자에서 내시경을 이용한 유륜부절개 부분 유방절제술에 대한 경험 및 5년 추적 관찰의 결과
강동우 ( Dong Woo Kang ),김연선 ( Yon Seon Kim ),조홍래 ( Hong Rae Jo ),고병균 ( Byung Kyun Ko ) 대한임상종양학회 2010 Korean Journal of Clinical Oncology Vol.6 No.2
목적: 유방보존술은 유방암 치료의 표준 술식으로 확립되어져 왔다. 그러나 유방보존술이 유방의 전체적인 모양을 유지시킬 수는 있으나, 수술 후 발생하는 피부 반흔은 미용적으로 해결해야 하는 문제였고 더 나은 미용 효과를 위해 내시경을 이용한 수술이 시도되었다. 저자들은 내시경을 이용한 유륜부절개 부분 유방절제술(transareolar endoscopic partial mastectomy)에 대한 임상 경험을 보고하고, 향후 유방암 수술에 대한 새로운 술식으로서의 이용 가능성에 대하여 알아 보았다. 대상 및 방법: 2005년 2월부터 2005년 6월까지 15명의 유방암 환자가 내시경을 이용한 유륜부절개 부분 유방절제술을 시행 받았다. 반달 모양의 절개창을 유륜 주위에 넣은 후 VisiportTM를 이용하여 유선조직을 피부로부터 박리하였고 preperitoneal distention balloon system (PDB)을 이용하여 유선조직을 후유방조직으로부터 박리하였다. 유선조직 상부와 하부의 충분한 박리 후에 안전한 절단면을 가진 종양조직을 제거하였다. 수술 후 경과 관찰을 위해 6개월 간격으로 5년 동안의 추적관찰을 시행하였다. 결과: 환자의 평균 나이는 47.5세였고, 종양의 평균 크기는 2.0 cm (1.3-3.0) 이었다. 유두로부터 종양까지의 거리는 평균 4.0 cm (2.5-5.0) 이었다. 15명의 환자 모두에서 안전한 절단면을 얻을 수 있었으며 수술 5년 경과 후 추적관찰에서도 국소재발은 없었다. 1명에서 흉막으로의 원격전이가 발생하였으나 국소재발은 없었다. 수술 후 미용적 만족도 평가를 위해 설문 조사를 시행하였으며 추적이 소실된 1명과 원격전이가 발생한 1명을 제외한 13명 모두에서 만족도가 높은 것으로 평가되었다. 결론: 내시경을 이용한 유륜부절개 부분 유방절제술은 미용적 측면에서 매우 효과적이고 유용한 술식으로 생각되나 향후 더 많은 환자군을 대상으로 하는 연구가 필요할 것이다. Purpose: Breast conserving surgery has been a standard surgery for breast cancers. This operation has a great cosmetic advantage over total mastectomy. Although breast conserving surgery can retain a good shape of the breast, an operation scar would be a disadvantage. Endoscopic surgery can be performed via a small and remote incision that becomes inconspicuous after surgery. We therefore designed transareolar endoscopic partial mastectomy in breast conserving surgery for breast cancer. Materials and Methods: Fifteen patients with breast cancer underwent transareolar endoscopic partial mastectomy. A semicircular incision was made around areolar and skin flap was made by using VisiportTM and deepened to the lateral edge of the mammary gland. For mobilization of the mammary gland from pectoralis muscle, we used a preperitoneal distention balloon system (PDB). The PDB allowed us to mobilize sufficiently mammary gland from the pectoralis muscle. After freeing half of the mammary gland, tumor was excised without difficulty with negative margins. Results: The mean age of patients was 47.5 years. The mean tumor size was 2.0 cm (range: 1.3-3.0 cm) and the mean tumor distance from nipple was 4.0 cm (range: 2.5-5.0 cm). In all patients, the tumor was excised with negative margins. After a mean follow up of 5 years, no patient had local recurrence, but one patient experienced distant metastasis. A patient satisfaction survey showed that all of patients evaluated the surgery as “Good”. Conclusion: Transareolar endoscopic partial mastectomy is an effective technique and feasible with a good cosmetic results. However, further study with more patients and long-term follow-up is needed.
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