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- 저자 : 김진웅(Jin Woong Kim) (검색결과 172 건)
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Dispersion Polymerization 을 이용한 단분산성의 가교 Poly ( methyl methacrylate ) 입자의 제조
김진웅,서경도 ( Jin Woong Kim,Kyung Do Suh ) 한국공업화학회 1998 응용화학 Vol.2 No.1
Highly monodisperse poly(methyl methacrylate)(PMMA) microparticles crosslinked with urethane acrylates containing carboxylic groups were produced by dispersion polymerization in methanol solution. Different from conventional crosslinkers, the urethane acrylate employed as a crosslinker showed an excellent effect on maintaining the monodispersity of PMMA microparticles even in the moderate crosslinker concentration (to about 10 wt%). This was believed that the urethane acrylate helped forming the monomer-swellable surface of primary particles, because of its structurally long tetramethylene oxide groups in its molecule. However, at high concentration and low molecular weight of the urethane acrylate, bimodal distributions were observed, which was attributed to the serious increase of the crosslinking density.
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김진겸(Jin-Kyum Kim),김경진(Kyung-Jin Kim),김우석(Woo-Suk Kim),이윤혁(Yoon-Huck Lee),오관정(Kwan-Jung Oh),김진웅(Jin-Woong Kim),김동욱(Dong-Wook Kim),서영호(Young-Ho Seo) 한국방송·미디어공학회 2019 방송공학회논문지 Vol.24 No.1
This paper introduces the analysis and development of digital holographic data codec technology to effectively compress hologram data. First, the generation method and data characteristics of the hologram standard data set provided by JPEG Pleno are introduced. We analyze energy compaction according to hologram generation method using discrete wavelet transform and discrete cosine transform. The quantization efficiency according to the hologram generation method is analyzed by applying uniform quantization and non-uniform quantization. We propose a transformation method quantization method suitable for hologram generation method through transform and quantization experiments. Finally, holograms are compressed using standard compression codecs such as JPEG, JPEG2000, AVC/H.264 and HEVC/H.265 and the results are analyzed.
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마틴 부버의 커뮤니케이션철학: “실체론”을 넘어 “관계론”으로
김진웅 ( Jin Woong Kim ) 한국커뮤니케이션학회 2016 커뮤니케이션학연구 Vol.24 No.1
This essay explores Martin Buber’s holistic communication philosophy. Buber explains relations among the people with two types, ‘I and It’ and ‘I and Thou’. This study concentrates to find his communication philosophy from holistic approach. We can find it in relations of ‘I and Thou’ especially. So in this discussion will be analysed the basic background of his communication epistemology. Secondly it will be attempted to clarify essence and limitations of the ontological communication in his theory of ‘I and It’. Furthermore I will investigate Buber’s communication thoughts in relation of ‘I and Thou’ from the holistic approach. This essay suggests to overcome limitations of the ontological communication paradigm between sender and receiver. Together this article contributes to solve communication problems in modern society, for example, alienation, dehumanization, social conflict etc.
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전정신경초종 및 측두골 골절로 인한 양측 심도 난청 환자에서 인공와우이식술 1례
김진웅(Jin Woong Kim),이영호(Young Ho Lee),이찬(Chan Lee),문인석(In Seok Moon) 대한두개저학회 2017 대한두개저학회지 Vol.12 No.2
Vestibular schwannoma often causes ipsilateral hearing loss due to its involvement of the 8th cranial nerve. Therefore hearing rehabilitation as well as tumor control should be considered simultaneously, especially when the patient also has hearing impairment in the contralateral side. Here, we report a 51-year-old patient who underwent contralateral cochlear implant due to temporal bone fracture in huge vestibular schwannoma patient.
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