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      • KCI등재

        언어,교육 : 한국어에 나타나는 "진실" 표현 어휘의 담화표지 기능 연구

        김태호 ( Tae Ho Kim ),정선영 ( Seon Yeong Jeong ) 경희대학교 비교문화연구소 2012 비교문화연구 Vol.29 No.-

        A Corpus-based Study of the Truth-related Words in Korean Used as Discourse Markers. Kim, Taeho & Jeong, Seon-yeong . 2012. Studies in Cross-cultural studies. This study investigates how the truth-related words in Korean, which were originally noun or adverb with ``truth`` related meaning, can be used as discourse markers with the functions such as ``emphatic marker``, ``attention getter``, or ``hesitation marker``, and it argues that such functions of the discourse markers are the result of grammaticalization process. That is to say that the truth-related words have acquired new functions as discourse markers from their corresponding lexical items as a noun or an adverb through grammaticalization process. In this study, we demonstrate that the truth-related words tend to appear sentence-initially or sentence-medially when they are used as discourse markers. We also show that they are most likely to be used as emphatic marker because of the lexical meaning of the truth-related words. Finally, we state that truth-related words differ from one another in where they appear and what function they are used with.

      • Design of T-S(Takagi-Sugeno) Fuzzy Control Systems Under the Bound on the Output Energy

        Kim, Kwang-Tae,Joh, Joog-Seon,Kwon, Woo-Hyen Institute of Control 1999 Transaction on control, automation and systems eng Vol.1 No.1

        This paper presents a new T-S(Tae-Sugeno) fuzzy controller design method satisfying the output energy bound. Maximum output energy via a quadratic Lyapunov function to obtain the bound on output energy is derived. LMI(Linear Matrix Inequality) problems which satisfy an output energy bound for both of the continuous-time and discrete-time T-S fuzzy control system are also derived. Solving these LMIs simultaneously, we find a common symmetric positive definite matrix P which guarantees the global asymptotic stability of the system and stable feedback gains K's satisfying the output energy bound. A simple example demonstrates validity of the proposed design method.

      • SCOPUSSCIEKCI등재

        뇌실외 배액술을 시행한 뇌실내 출혈환자의 예후 분석

        김선환,송시헌,염진영,김관대,김윤 대한신경외과학회 1996 Journal of Korean neurosurgical society Vol.25 No.2

        The author analyzed retrospectively 94 cases of spontaneous intraventricular hemorrhage(IVH) which were treated with external ventricular drainage(EVD) at the Department of Neurosurgery. Chungnam National University Hospital from January 1990 to June 1994. In all cases, infusion of urokinase was attempted for effective drainage. The peak age group of IVH patients were those in their sixth decade, but in primary IVH, younger patients were more frequently affected. The order of causes of primary IVH are hypertension, arteriovenous malformation. Moyamoya disease and cerebral aneurysm, however, secondary IVH are mostly associated with hypertension and aneurysm. The overall mortality rate was 38%. A low initial Glasgow coma scale(under 5)(p<0.001), a high Graeb score(over 10)(p=0.001), fourth ventricular ventricular hemorrhagic dilation(p=0.001), secondary IVH(p=0.009), unilateral or bilateral pupil fixation at the preoperative stage(p<0.001) and long duration of EVD(p=0.045) are all poor prognostic factors associated with higher mortality.

      • 부분적으로 유체가 채워진 원통형 관내의 외팔보 진동특성에 관한 실험적 연구

        권대규,유계형,소순선,이성철 전북대학교 공학연구원 ( 구 전북대학교 공업기술연구소 ) 2003 工學硏究 Vol.34 No.-

        This paper presents the vibration characteristics of an intelligent cantilever beam in contact with fluid using PZT actuator and PVDF film. The effect of liquid level on free vibration of composite beam in a partially liquid-filled circular cylinder is investigated. The dynamic behaviors of a flexible beam-water interaction system are examined. The coupled system is subject to an undisturbed boundary condition in the fluid domain. In the vibration analysis of wetted beam, the decoupled analyses between beam and fluid have been conventionally employed by considering firstly the composite beam vibration in air and secondly performing the correction taking account for surrounding fluid effects. That is, this investigation was to look at how natural frequencies, mode shapes, and damping are affected by liquid level variations. Using the coupled modal reanalysis method employing the governing equations and the clamped-free and free-free boundary conditions, the vibration analysis of beam in contact with fluid is performed. We also carried out the experimental verification about reliability of theoretical methods to inclusive vibration analysis of the fluid-structure system with PZT actuator and PVDF film. It was found that the coupled natural frequencies decrease with the fluid level for the identical composite beam due to added mass effect.

      • 광탄성 실험법에 의한 크레인훅의 응력해석

        백태현,김환,이선구 국립7개대학공동논문집간행위원회 2003 공업기술연구 Vol.3 No.-

        An experimental study for a crane hook was performed to investigate the stress distribution along a certain line where the maximum and minimum stresses to be developed. The crane hook was modeled into a 2-dimensional plate made of urethane rubber called 'Photoflex'. The materiel of Photoflex is very sensitive to a load and has low photoelastic fringe constant. The photoelastic techniques used in this experiment were the Tardy compensation method, the fringe thinning process and the 4-step phase shifting method. Experimental results by photoelasticity were compared with the stresses obtained from the simple curved beam theory and finite element analysis. All the results were close to each other.

      • KCI등재

        Nd:YAG 레이저 照射에 따른 琺瑯質의 變化에 關한 實驗的 硏究

        배태성,권선자,김철중,백병주 大韓小兒齒科學會 1992 大韓小兒齒科學會誌 Vol.19 No.2

        The purpose of this study was to investigate the changes of polished and caries enamel of third molar when they were irradiated by the CW Nd : YAG laser with optical fiber delivery system and the pulsed Nd:YAG laser. The author investigated the hardness of lased enamel surfaces with the energy density of 40 J/㎠ and the shear bond strength between etched enamel and composite resin, and examined the polished and caries enamel surfaces irradiated by CW Nd : YAG laser with the energy density of 20-120 J/㎠ by using scanning electron microscope. The obtained results were summerized as follows : 1. The Knoop hardness decreased significantly after irradiating the Nd : YAG laser with the energy density of 40 J/㎠(P<0.01). 2. The shear bond strength of enamel showed a significant difference before and after irradiating the Nd : YAG laser with the energy density of 40 J/㎠(P>0.05). 3. SEM photographs showed the irregular microcracks and the structural change of lased enamel surface. 4. SEM photographs showed the aspect of decrease in decalcification of enamel prism after irradiated with the energy density of 40 J/㎠. 5. SEM photographs showed the aspect of removal in caries enamel when they were irradiated with the energy density of 70 J/㎠.

      • KCI등재

        대용섬유자원으로써 어저귀를 이용한 한지제조 (제2보) : 인피 및 목질부 섬유를 이용한 한지 제조 Manufacturing of The Hanjis Made from Bast Fiber and woody core fibers

        정선화,조남석,최태호 한국목재공학회 2004 목재공학 Vol.32 No.1

        생장속도가 빨라서 단위면적당 Biomass의 생산량이 많은 어저귀(Indian mallow, Abutilon avicennae G.)를 원료로 하여 펄프화하였으며, 제조한 한지의 물리적·기계적·현미경적 특성에 관하여 비교 검토하였다. 제조한 한지의 특성을 살펴보면 광학적, 강도적 현미경적인 특성에서 설포메틸 펄프화법이 우수한 결과를 나타냈고, 장섬유인 인피부 펄프에 대한 단섬유인 목질부 펄프의 혼입량 증가에 따른 변화에 있어 지질(밀도, 백색도, 불투명도, 지합)의 변화는 점차 증가했으나, 강도는 감소하는 경향을 나타냈다. This study was carried out to investigate the sheet properties of Indian mallow Hanji, made by different pulping methods, such as alkali and sulfomethylated pulpings, and different stock compositions, various mixing ratios of bast fiber and woody core fibers. Indian mallow hanjis made from the sulfomethylated pulps had higher brightness and sheet strength than the alkali pulps. It was found that the brightness of sulfomethylated pulp was enough high without an extra-bleaching. In the mechanical properties of Indian mallow hanjis mixed with bast fiber and woody core stalk pulps, the sheet strength were decreased as wood core pulps contents were increased. The sheet formation were increased as the increase of woody core pulps contents, while the sheet strength decreased Although the sulfomethylated pulping resulted in higher pulp yield, no morphological differences of fiber surfaces were shown as compared to the different pulping methods.

      • 키틴/키토산을 이용한 의료용 재료의 개발

        손태일,김선정 中央大學校 遺傳工學硏究所 1997 遺傳工學硏究論集 Vol.10 No.1

        의료용 재료에 대한 키틴의 개발연구는 흡수성, 봉합사, 이공피부에 선행해서 검토되었으며, 현재로는 이미 실용단계에 있으며, 널리 임상실험이 행해지고 있다. 또한 위에서 기술한 이외의 품목에 있어서도 시험임상단계에 있는 것도 많으며, 실제로 의료품으로서 의료 시장에 등장할 날도 머지 않았다고 생각된다. 수년전까지는 키틴의 의용재료로서의 가능성은 단순한 아이디어 단계에 지나지 않았던 것을 생각해보면 커다란 진보라고 할 수 있다. 키틴은 화학구조가 셀룰로오스와 유사하며, 성형체의 외관, 물성도 비슷하지만, 생체 환경에 놓여 있는 경우 다른 재료와는 현저히 다른 성상을 나타낸다. 즉 열상과 같이 환경이 급격히 변화해 있는곳에 놓여 있어도, 또한 복강내와 같이 정상적인 생체표면에 있어서도, 생체와의 세포레벨반응은 완화하며, 오히려 적극적으로 생체수복을 도와주는 기능이 발견되었다. 또한 자신이 조금 분해되면서 생체와의 친화성을 유지한다고 하는, 생체반응에 대한 완충작용을 하고 있다고 말할 수 있다. 이 사실은 기계적강도가 높은 키틴성형체를 사용하는 것으로 생체내에서 안정되고 고정된 구조재료로서의 역할을 하면서 키틴특유의 기능을 발휘한다. 종래의 것에 발견되지 않았던 특징 있는 재료라고 할 수 있다. 키틴은 앞으로 화학적 방법에 의해서 더욱더 기능이 높은 많은 것을 제공하리라고 생각된다. 그것이 실현되면 이번에 기술한 것 뿐만아니라 생체재료로서의 꿈은 더욱 넓어지리라 기대된다. Chitin(poly-N-acetylglucosamine)/Chitosan(poly-N-aminoglucosamine) from crab shells is known to biocompatible materials, to have an accelerating effect on wound healing Several absorbable suture materials; polyglycolic acid(PGA), plain catgut and chromic catgut compared with chitin were tested. The tensile strength retention in artifitial gastric juice(pH 1.2), human bile(pH 6.7) and human pancreatic juice(pH 8.2); chitin was preserved up to 30 days but the other samples had dissolved within. Biodegradation and absorption of chitin are two pathways as being the in vivo metabolism; resolved by lysozyme, and reproduced to glycoprotein.

      • 액상 실리카륨을 혼입한 콘크리트의 파괴특성

        박제선,민창동,김태경,이주형 江原大學校 産業技術硏究所 1995 産業技術硏究 Vol.15 No.-

        The experimental study is conducted to analyze the characteristics of concrete included silica fume. The workability of concrete is controled by the ratio of mixture, such as superplastcizer, based on the constant rates of sand and cement. It is concluded that the strength and the frectu Toughness of concrete with silica fume are very improved.

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