• Proceedings of the KIEE Conference
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• 2002.07b
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• pp.1193-1195
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• 2002

This paper presents Active-clamp Class-E high frequency resonant inverter with single-stage. The proposed circuit is integrated Active-c class-E circuit to boost converter with the funct power factor correction. Boost converter is opera positive and negative half cycle respectively at frequency(60Hz), operating in Discontinuous Con Mode(DCM) of boost converter performs high p factor. By adding active-clamp circuit in Cl inverter, main switch of inverter part is operat only ZVS(Zero Voltage Switch), but also reduce switching voltage stress of main switch. Simulation result using Psim4.1 show that the p prove the validity of theoretical analysis. This proposed inverter will be able to be pract used as a power supply in various fields are ind heating applications, DC-DC converter etc.

• Journal of Chest Surgery
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• v.15 no.1
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• pp.15-20
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• 1982

During the past ten years from 1972 to 1981, a total of 100 cases of bronchiectasis were treated by pulmonary resection at C.A.F.G.H. Pulmonary tuberculosis and frequent U.R.I. were the most frequent associated disease and encountered in 54% in this series. Various types of pulmonary resection were performed on 100 patients; left lower lobectomy in 40 cases, left lower lobectomy and lingular segmentectomy In 29 cases, right lower lobectomy in 12 cases, right middle and lower lobectomy in 12 cases, lingular segmentectomy in 3 cases, left pneumonectomy in 3 cases and both lower lobectomy in 1 case. Complications developed in 9 cases and 1 case among them died of sepsis following secondary opera-tion. Among complications of 9 cases, postoperative atelectasis showed in 4 cases, hemorrhage in 2 cases, bronchopleural fistula in 2 cases, pulmonary edema in 1 case. Complications were treated by conservative and secondary operative management with satisfactory result except one death. Remainders without complication showed good result without symptom in postoperative and follow-up periods.

• Journal of Fashion Business
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• v.6 no.6
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• pp.68-77
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• 2002

In this study, based on Choi, Jong Rim's script (2000), the main characters' stage costume designs were presented with 15 illustrated pieces in terms of compounding the images of Korea and West. I considerered the main characters' social status and personality by each act and scene, as well as the correlation of the stage costume's minor theme, color and material. In expressing the stage costume, this study has chosen the formational method of the comparative design dimensions between costumes in 1650s Joseon and baroque period and used the joinder of flat pattern and draping in various parts of the costumes.

• Journal of Advanced Marine Engineering and Technology
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• v.21 no.3
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• pp.293-301
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• 1997

Edge detection is the first step and very important step in image analysis. We cast edge detec¬tion as a problem in cost maximization. This is acheived by the formulation of a cost function that evaluates the quality of edge configurations. The cost function can be used as a basis for compar¬ing the performances of different detectors. We used a Genetic Algorithm for maximizing cost func¬tion. Genetic algorithms are a class of adaptive search techniques that have been intensively stud¬ied in recent years and have been prone to converge prematurely before the best solution has been found. This paper shows that carefully chosen modifications(three factors of the crossover opera¬tor) are implemented can be effective in alleviating this problem.

• Progress in Superconductivity
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• v.7 no.1
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• pp.83-86
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• 2005

The High-Tc superconducting power cable consists of a multi-layer high-Tc superconducting cable core and a stabilizer which is used to bypass the current at fault time. Eddy current loss is generated in the stabilizer in normal operating condition and affects the whole system. In this paper, the eddy current losses are analyzed with respect to various structure of stabilizer by using opera-3d. Moreover, optimal conditions of the stabilizer are derived to minimize the eddy current losses from the analyzed results. The obtained results could be applied to the design and manufacture of the high-Tc superconducting power cable system.

• Journal of the Korean Society of Safety
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• v.21 no.6 s.78
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• pp.1-6
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• 2006

Subway platform is divided into Side-platform type and Center-platform type. In this study does quantitative fire risk assesment of subway platform types in numerical analysis by using CFD model. From the result of this study, 1) All exhaust mode was low-end result it seems most fire risk at Side-platform station. 2) All exhaust mode was low-end result it seems most fire risk at Center-Platform station. 3) When comparing same type exhaust mode of Side-platform and Center-platform that last thing was visible $9.1{\sim}72.34%$ low-end fire risk. Center-platform is more opera-tive than Side-platform that reduce fire risk when that was same dimension and external environment. Designer look upon a fire characteristic of subway platform types when he make smoke control air volume and platform area design.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2012.10a
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• pp.718-721
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• 2012

It is not an exaggeration that the world is connected by the internet currently. The must people using a computer are making the most of the internet. We use the web browser to connect the internet. By using the current a variety of browsers including Internet Explorer, Safari, Chrome, Firefox, Opera, we understand the advantages and disadvantages of them and make the customized web browser MPK by using visual basic programming language.

• Proceedings of the Korea Contents Association Conference
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• 2017.05a
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• pp.57-58
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• 2017

중국 경극에서 얼굴에 다양한 분장을 하는 것을 검보라 하며, 극 중에서는 다양한 상징성을 갖는다. 검보는 민족적 특색을 내재하며, 극중 캐릭터를 위한 "영혼의 화면"이라 불린다. 반면, 일본 노극은 가면을 쓰고 연기하는 독특한 고전 가무극으로 히타멘(直面, 가면을 쓰지 않음)과 가면을 쓰는 공연으로 나뉘며, '유현(幽玄)의 예술" 이라고 불린다. 이러한 경극의 검보와 노극의 가면은 애니메이션에 캐릭터에 차용되며, 극의 서사와 상징성을 드러내는 매개 역할을 하고 있다. 이에, 본 연구에서는 경극의 검보와 노극의 가면이 연출된 애니메이션 영화를 중심으로 사례 비교연구를 진행하고자 한다.

• Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
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• v.28 no.1
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• pp.17-19
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• 2017

Opera singers train their vocal organ to have a good timbre of voice. They train and train again to have a strong resonance, large range of voice, homogenous color of voice, a voice goes far and to avoid vocal disorder, etc. This article is analyzing from scientific and medical perspective. It could approach the secret of the great art of 400 years history - . Furthermore standardizing voice training method based on will facilitate to train, therapy and care the voice professional user and voice disorders.

• Proceedings of the Korea Institute of Applied Superconductivity and Cryogenics Conference
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• 2003.02a
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• pp.200-202
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• 2003

In this paper, 3-D electromagnetic analysis of a single phase 1MVA 22.9kV/6.6kV High Temperature Superconducting(HTS) transformer with double pancake windings by using the OPERA 3D was accomplished. And in order to perform the analysis of leakage impedances of a 1MVA HTS transformer, the energy conservation method was used. The efficiency voltage regulation and ％ impedance voltage drop of a 1MVA HTS transformer were obtained by the analysis of leakage impedances.