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대형경유자동차에 적용 가능한 복합재생 매연저감장치의 저감특성에 관한 연구
김태화(Taehwa Kim),강정호(Jeonho Kang),박찬수(Chansu Park),이해수(Haesoo Lee),김정곤(Jeonggon Kim) 한국자동차공학회 2013 한국자동차공학회 부문종합 학술대회 Vol.2013 No.5
The goal f this study is comprehend the reduction characteristic of the emission gas about the diesel vehicle in which the service time and displacement is high in comparison with small and medium vehicle in the smoke reducing device attachment. The final examination adhered the smoke reducing device of the complex recycle way to the engine mainly mounted in the heavy-duty diesel vehicle and construction equipment and measured the reduction efficiency of the emission gas. And it examined the adaptability about the heavy-duty diesel vehicle of the complex recycle smoke reducing device through the reduction analyze characteristic. Consequently, when adhering of the complex recycle smoke reducing device, the reduction efficiency of PM was exposed to be satisfied with the waste gas regulation.
김정곤,Kim Jeonggon 대한음성학회 2004 말소리 Vol.49 No.-
In this paper, new voice message system supporting massive outbound call is proposed. Basic idea of the proposed system is to pre-process all the text-to-speech conversion process, mixing of text and attached music file and to store the results of pre-process in the cache server which is connected to the IVR. New voice message system is optimized for the voice message system supporting massive outbound call by distributing the load of the web server caused by server-side script implementation which is accessing database and generating dynamic Voice XML document over client module and server module of web server. The proposed voice message system was test-deployed in one domestic voice message application service provider and it is shown that proposed voice message system reduced the response latency problem of test-bed voice message system.
Seongmin Hong,JeongGon Kim,CheolGi Kim 한국자기학회 2009 Journal of Magnetics Vol.14 No.2
The magnetic and structural properties of FINEMET (the Hitachi product name of the Fe-Si-B-Nb-Cu alloy) nanopowder with a composition of Fe73.5Si13.5B?Nb₃Cu₁ atomic percent were investigated after annealing, chemical etching, and mechanical milling. The primary and secondary crystallization temperatures were 523 and 550 ℃, respectively. The grain size of the particles was adjusted by annealing time. Optimally annealed particles exhibited a homogenous microstructure composed of nanometer-sized crystalline grains. The grain boundary of the annealed particles was etched preferentially by chemical etching. Chemically etched particles were broken at the grain boundary by high-energy ball milling. As a result, a nanometer-sized FINEMET powder with a uniform size of crystalline grains was fabricated.
( Jaemok Choi ),( Jeonggon Kim ) 성균관대학교 동아시아학술원 2019 Sungkyun Journal of East Asian Studies Vol.19 No.1
This paper examines the relationship between women’s medical care and Buddhism through the activities of Kudo Takeki 工藤武城 (1878-?), director of Keijo Women’s Hospital during the Japanese occupation of Korea, and how Kudo’s projects functioned under Japanese “cultural rule” (Bunka seiji 文化政治) in colonial Korea. Kudo Takeki specialized in gynecology at the University of Wurzburg, Germany. Along with some other influential figures in Korea, he sought to cure even spiritual problems of his patients through Buddhist propagation and literary activities. Through his activities, Kudo Takeki helped promote such initiatives on the part of the colonial rulers in their management of colonial Korea. His activities involved forging connections between medical service and Buddhism and between Buddhism and women. After the March First Movement of 1919, Governor-General Saito turned his attention to women, who had become more receptive to Buddhism in Korea after centuries of domination under Confucianism in Choson, as well as to medical science and service, the “benefits of civilization.” In this respect, the “cultural rule” of the colonial state tried to exercise governance by reconciling medicine, Buddhism, and women into a regime that could effectively further its agenda. In this invisible framework, Kudo took it as his calling to improve the social status of Korean women and give them relief through his medical knowledge and practice.
IEEE 802.15.4 기반의 RSSI를 이용한 위치 추적 향상 기법
허병회(Hur Byounghoe),김정곤(Kim Jeonggon) 한국통신학회 2009 한국통신학회 학술대회논문집 Vol.2009 No.11
IEEE 802.15.4 무선 센서 네트워크는 물리적 또는 환경적 조건을 모니터링하고 수집하기 위해 센서를 사용하는 독자적인 디바이스로 구성된 무선 네트워크이다. 최근 센서기술과 정보통신 인프라의 발전으로 환경 모니터링 기술의 하나인 위치추적 기술에 대한 관심이 증가되고 있다. 센서네트워크에서의 일반적인 수신신호 세기 RSSI(Received Signal Strength Indication)를 활용한 위치인식 시스템은 장애물이나 RF의 전파지연 및 멀티패스에 의해 정확한 위치 추적이 어렵다. 따라서 본 논문에서는 RSSI 기반의 위치 추적 시스템이 가지고 있는 이러한 문제를 해결하기 위해 Gaussian Filter algorithm을 적용하여 위치 인식 성능을 개선한다. 이에 RSSI 값에 따른 전파 감쇠 특성을 논의한 후, 노드마다 개별 RSSI 값에 따른 확률적 거리 테이블을 작성한 후 생성된 모델을 통해, 센서 노드로부터 추출된 데이터를 본 논문에서 제안한 Gaussian Filter Algorithm을 적용하여 오차개선을 하였다.
Yoon, Ki-Cheol,Kim, Jeonggon Harrison,Lee, Jong-Chul Wiley Subscription Services, Inc., A Wiley Company 2010 MICROWAVE AND OPTICAL TECHNOLOGY LETTERS - Vol.52 No.9
<P>In this article, a narrow band pass filter with reduced size using the λ<SUB>g</SUB>/4 short stubs is presented.The filter size is reduced by realization of transmission line at the second harmonic while the power can be transferred to the output using the fundamental frequency band generated in the resonator and the transmission line in which the impedance mismatching technique is adopted. The experimental results show that the insertion loss is 2.0 dB and return loss is 11.1 dB, and the fractional bandwidth is 10% at the center frequency of 5.8 GHz. The filter size is 19.7 × 8.6 mm<SUP>2</SUP>. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 2002–2005, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25419</P>