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김기찬,김영학,신광호,김휘석,윤관섭,양창섭,Kim, Ki-Chan,Kim, Young-Hak,Shin, Kwang-Ho,Kim, Hwi-Seok,Yoon, Kwan-Seob,Yang, Chang-Sub 한국군사과학기술학회 2011 한국군사과학기술학회지 Vol.14 No.3
An orthogonal magnetic field is often used for a military vessel in the deperm process such as Flash D deperm protocol and Anhysteretic deperm protocol. The effect of the orthogonal magnetic field on a deperm performance was investigated for a sample with strain-induced magnetization and field-induced magnetization given to different direction. A 70mm wide, 110mm long and 0.25mm thick rectangular steel plate was bent to have U-shape and to generate a strong strain on the bottom region of U-shaped steel plate. Field-induced magnetization was attached by NdFeB permanent magnet. Demagnetization was performed by applying magnetic field with a step decrement from the first field(the first shot) under the action of DC bias field.
김기찬 ( Ki Chan Kim ),존로렌스Enriquez ( John Laurence Enriquez ) 한국중소기업학회 2015 기업가정신과 벤처연구 Vol.18 No.2
국가별 기업생태계경쟁은 창조성, 시장성, 생산성의 3요소를 선순환으로 만들어가는 기업가정신과 재투자의 과정이다. 과거 원가경쟁력을 기반으로 한 한국의 기업생태계는 중국 등 신흥경쟁국들의 등장으로 구조전환기에 있다. 이제 연구개발과 창조성 없이 신흥경쟁국들과 차별적으로 경쟁하기 어렵다. 한국 기업생태계는 높아진 국민소득만큼의 고비용구조에도 불구하고 건강한 기업생태계를 만들어가는 새로운 노력이 필요하다. 이에 독일과 일본과의 기업생태계 건강성 비교를 통해 한국 기업생태계에의 시사점을 얻고자 하였다. 기업생태계 건강성의 평가 모델로서 HeBEx(Healthiness of Business Ecosystem Index)를 개발하였으며, 이를 측정 모델로 하여 각 변수별 국가자료를 OECD, World Bank 등에서 수집하고 분석하였다. 이를 바탕으로 HeBEx의 각 요소를 시간흐름에 따른 종단적 분석과 한국, 독일, 일본간 횡단적 분석을 통해 전략적 시사점으로 얻고자 하였다. 이 분석은 한국 경제가 저성장 경제로 전환함에 따라, 지속 가능한 경제 발전을 위한 새로운 성장 동력발견의 시사점을 제공해 주었다. 한국의 기업생태계는 높은 연구개발투입으로 창조성에서 성공한 나라이지만, 글로벌시장개척을 나타내는 시장성에서 실패하여 연구개발 패러독스의 모습이 보이고 있다. 이에 비해 독일은 창조성을 시장성으로 연결하여 건강한 기업생태계구조를 보이고 있다. 그러므로 연구개발과 혁신에 성공한 한국의 기업생태계들은 이를 상용화하고 글로벌 시장개척을 통해 개발의 시장화라는 선순환노력이 필요하다. In the race of economies pitting against each other, some have managed to rise above the competition not by responding to others`` actions but by creating a new condition that will reshape the industry in their favor. For the past few decades, Korea has been able to achieve constant growth (Bae and Rowley, 2004; Dana, 2007; Waechter and Ratten, 2007). To cope with unstable environments, Korea has chosen to continually design technological and organizational architectures aside from simply innovating new products. The Healthiness of Business Ecosystems Index (HeBEx) conceptualized a model for measuring business health, and also operationalized it. This study used HeBEx as a basis of comparison for Korea, Germany, and Japan. Based on the results, this research points out the strengths and weaknesses of the Korean Economy, and suggests some courses of action towards achieving sustainable growth. As Korea``s economy has turned into a low-growth economy, Korea needs to find new growth engines for sustainable economy development. Taking cue from Germany and Japan, Korea needs to focus on the development of advanced technology, and accelerate commercialization of R&D outcome.
영구자석 전동기의 부하각에 따른 토크 및 토크리플 분석을 위한 해석법 연구
김기찬(Ki-Chan Kim),이주(Ju Lee) 대한전기학회 2009 대한전기학회 학술대회 논문집 Vol.2009 No.7
This paper presents an efficient calculation method for torque and torque ripple of a permanent magnet synchronous motor by using superposing method of load angle torque curves from finite element method. The load angle range having minimum torque ripple as well as average torque according to load angle can be induced by proposed method. We selected a permanent magnet assisted synchronous reluctance motor (PMa-SynRM) as a study model because of its high torque ripple. We performed experiment of torque ripple and average torque according to load angle for the verification of proposed method in the paper.
김기찬 ( Kim Ki Chan ) 대한풍수연구학회 2019 대한풍수연구 Vol.7 No.-
풍수지리는 취길피흉을 통하여 사람들이 命福을 받도록 하는 것이다. 『주역』이 천지를 본떴으므로 『주역』의 이치를 알고 풍수지리에 응용하면 천지의 이치대로 살 수 있으므로 인간의 삶이 예측가능하고, 윤택해질 것이다. 『주역』은 태극, 음양, 사상, 팔괘의 기적 작용을 원리로 하므로, 하늘과 땅의 높고 낮음, 산과 못의 기운이 통함, 우레와 바람이 서로 부딪히며 응함, 수화가 相反相成하는 속성과 그로 인하여 서로 작용하는 생기의 원리를 알고, 이 모든 것이 우주 가운데서 서로 섞여서 서로 고립되지 않고 서로 관계를 맺으면서 조화로움을 찾는 것을 이해하고 풍수지리에서 이를 응용하면 풍수를 보는 눈이 밝아져서 풍수지리의 목적을 이룰 것이다. Feng Shui can get good and avoid the bad. It is to make people receive life and wealth. Iching saw the heaven and earth. If you know the principle and apply it to the feng shui, Because you can live according to the nature of heaven and earth, Human life will be predictable and enriching. The main principle is the energy action of Taegeuk, Yin, Yang, and Eight signs of divination. The sky and the ground are high and low, The energy of mountains and ponds are intertwined, Lightning and wind hit each other, Water and fire hit each other and help each other. Knowing the principle of animations(life energy) that interact with it, All of these are mixed in the universe and are not isolated from each other. Understanding how to find harmony in relationship with each other, and applying it in Feng Shui. The eyes of Feng Shui are brightened, It will achieve the purpose of feng shui.
김기찬(Ki-Chan Kim),안기현(Ki-Hyun Ahn),강일중(Il-Jung Kang),권철신(Cheol Shin Kwon) 한국경영과학회 2007 한국경영과학회 학술대회논문집 Vol.2007 No.11
The object of this research is to evaluate the priority of R&D project alternatives which were already screened by both feasibility and suitability of technological performance. This research is a selection model for R&D project alternatives after setting phase. And it is designed by CHP model which include individual and mutual weights. This model have 5 steps. (1) Setting Technology-Modules derived on the setting phase (2) Presenting the evaluation standards divided with ‘M-Field’ and ‘T-Field’ (3) Assessing the evaluation standard and technology modules (4) Obtaining and integrating the individually and mutually effective weights (5) Selecting the technology modules based on the priority of order by CHP Through these steps, this model can suggest the evaluation way from specific technology levels to project level. And it can be guaranteed to perform the selected module set.
면역글로불린 G 아형 결핍이 동반된 Kartagener 증후군
김기찬 ( Ki Chan Kim ),박주한 ( Joo Han Park ),반가영 ( Ga Young Ban ),유혜수 ( Hye Soo Yoo ),신유섭 ( Yoo Seob Shin ),박해심 ( Hae Sim Park ),예영민 ( Young Min Ye ) 대한천식알레르기학회 2013 Allergy Asthma & Respiratory Disease Vol.1 No.3
Kartagener syndrome is characterized by the triad of situs inversus, bronchiectasis, and chronic paranasal sinusitis. Recurrent sinopulmonary infection, the major determinant for diagnosing immunodeficiency, is the most common clinical manifestation of the disease. A 17-year-old female patient presented with dyspnea, cough, sputum, nasal congestion, and rhinorrhea for more than 5 years. Nasal symptoms and dyspnea had not been controlled by intermittent treatment with mucolytics and antibiotics from primary clinics since 3 months before visiting our clinic. Chest X-ray and computed tomography showed situs inversus, dextrocardia and bronchiectasis. Paranasal sinus series revealed mucosal thickening and haziness on both maxillary sinus. Serum immunoglobulin (Ig) G4 was decreased, but total IgG was within normal range. Under the diagnosis of Kartagener syndrome with IgG4 deficiency, monthly intravenous IgG (IVIG) treatment was performed for 6 months. Her symptoms were well controlled and the frequency of antibiotics use was markedly decreased. We report a patient having the Kartagener syndrome with IgG4 deficiency that was successfully controlled with a 6-month-treatment of IVIG. (Allergy Asthma Respir Dis 2013;1:288-291)