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디바이스 시뮬레이션 기술을 이용한 미세 n-MOSFET의 비등온 비형형장에 있어서의 특성해석
최원철(Won-Cheol Choi) 한국산업융합학회 2001 한국산업융합학회 논문집 Vol.4 No.3
This simulator is developed for the analysis of a MOSFET based on Thermally Coupled Energy Transport Model(TCETM). The simulator has the ability to calculate not only stationary characteristics but also non - stationary characteristics of a MOSFET. It solves basic semiconductor devices equations including Possion equation, current continuity equations for electrons and holes, energy balance equation for electrons and heat flow equation, using finite difference method. The conventional semiconductor device simulation technique, based on the Drift-Diffusion Model (DDM), neglects the thermal and other energy-related properties of a miniaturized device. I, therefore, developed a simulator based on the Thermally Coupled Energy Transport Model (TCETM) which treats not only steady-state but also transient phenomena of such a small-size MOSFET. In particular, the present paper investigates the breakdown characteristics in transient conditions. As a result, we found that the breakdown voltage has been largely underestimated by the DDM in transient conditions.<br/> <br/>
Hydro Dynamic Model을 이용한 CMOS의 파괴특성의 Transient Simulation해석
최원철(Won-Cheol Choi) 한국산업융합학회 2002 한국산업융합학회 논문집 Vol.5 No.1
In present much CMOS devices used in VLSI circuit and Logic circuit. With increasing a number of device in VLSI, the confidence becomes more serious. This paper describe the mechanism of breakdown on CMOS, especially n-MOS, based on Hydro Dynamic model with device self-heating. Additionally, illustrate the CMOS latch-up characteristics on simplified device structure on this paper.<br/>
알레젠 제거 옻나무 추출물 투여로 생존기간이 연장된 편평세포폐암 환자 1례
김은희,박소정,최원철,이수경,Kim, Eun-Hee,Park, So-Jeong,Choi, Won-Cheol,Lee, Soo-Kyung 대한암한의학회 2011 大韓癌韓醫學會誌 Vol.16 No.2
Background : Lung cancer is one of the most common malignancy in the world. Types of lung cancer are Non small cell lung cancer and small cell lung cancer. Subtypes of Non small cell lung cancer are adenocarcinoma, squamous cell carcinoma and large cell carcinoma. Knowing the type of lung cancer is important in determining both treatment and prognosis. Recently, due to newly developed anti-cancer drugs, squamous cell carcinoma has relatively poor prognosis than non-squamous cell carcinoma. Case : We report a squamous cell lung cancer case treated with allergen removed Rhus verniciflua Stokes (aRVS) extract. The patients initially diagnosed stage squamous cell lung carcinoma, but she refused recommended operation. She initiated aRVS extract monotherapy in October. 2006. The follow up Computed tomography in March. 2007, she diagnosed stable disease of tumor response on aRVS treatment. However, this case was lost to follow up for 6 months while she was treated with tomotherapy. In October 2007, she came back to our cancer center after diagnosed stage IV metastasized lung to lung, and aRVS monotherapy was restarted. She had survived 2 years after metastasis of squamous cell lung carcinoma. Conclusion : Allergen removed Rhus verniciflua Stokes(aRVS) sucessfully prolonged overall survival of a squamous cell lung cancer patient.
소음인(少陰人) 태음병(太陰病) 심하비증(心下?證)의 병증약리(病證藥理) 고찰
서영광,이지원,이준희,최원철,이의주,고병희,Seo, Young-Kwang,Lee, Ji-Won,Lee, Jun-Hee,Choi, Won-Cheol,Lee, Eui-Ju,Kho, Byung-Hee 사상체질의학회 2010 사상체질의학회지 Vol.22 No.3
1. Objective: Gastric Stuffiness (心下?證) in the Soeumin Taeeum symptomatology (少陰人 太陰病) in Sasang Constitutional Medicine shows an interesting evolutionary process. Originally found in the texts of Sanghanlun (傷寒論), the perspectives regarding the symptoms of Gastric Stuffiness were expanded by many medical scholars and Lee Jema. To comprehend the Jema's concept of Taeeum symptomatology and utilize his prescription clinically, it deserves to study on the Gastric Stuffiness in Donguisuseowon (東醫壽世保元). 2. Methods: Many texts including Sanghanlun (傷寒論) and Dongeuibogam (東醫寶鑑) were reviewed in order to track the evolutionary process concerning the symptoms of Gastric Stuffiness. Also, Lee Jema's works including the different versions of Donguisuseowon (東醫壽世保元) were reviewed to examine the development of Lee's concepts regarding the Gastric Stuffiness in the Soeumin Taeeum symptomatology. 3. Results and Conclusions: 1) Most of the previous concepts on Gastric Stuffiness were generally similar to those found in Sanghanlun, especially in that they addressed Yang deficiency of the middle triple energizeer as the central pathogenic process. 2) Lee Jema's views on the epigastric discomfort in the Soeumin Taeeum symptomatology evoloved over time and culminated in the finalized pathology and therapeutics appearing in his last work, the Shinchuk version of Donguisuseowon (東醫壽世保元). 3) 4 kinds of prescription which invented by Lee Jema to treat the Gastric Stuffiness in the Soeumin Taeeum symptomatology can be matched to the prescription of Sanghanlun respectively. However through evolutionary process of Jema's prescriptions, the indication of them expanded: not only to treat Gastric Stuffiness but to diverse symptoms of Soeumin.
쑥뜸치료(Moxibustion)로 호전된 비소세포성 폐암 환자의 암성 통증 1례
김민경,이진수,이상헌,정현식,최원철,김경석,Kim, Min-Kyung,Lee, Jin-Su,Lee, Sang-Hun,Jung, Hyun-Sik,Choi, Won-Cheol,Kim, Kyung-Suk 대한암한의학회 2009 大韓癌韓醫學會誌 Vol.14 No.1
Background & Objective: Regardless of types of cancer, cancer pain means the pain occurred by tumor itself, caused by complication or side effects during treatment and which is neither directly related to tumor nor treatment. This case was performed to relieve the cancer pain and study the effect of moxibustion to the cancer pain. Method: For 27 days, the patient was treated by moxibustion($MANINA^{(R)}$), acupuncture, herbal medicine and narcotic analgesics. We planned to maintain moxibustion on 8 points of Bladder meridian line(BL13, BL17, BL42, BL43) for 20 minutes. The improvement of the symptom was evaluated by BPI/VAS, and the amount of narcotic analgesics applied. Results: The BPI/VAS was declined and amount of applying narcotic analgesics was decreased. Conclusion: It is suggested that moxibustion on BL13, BL17, BL42, BL43 is useful to relief of cancer pain in left flank area.