• Journal of Microbiology and Biotechnology
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• v.3 no.3
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• pp.209-213
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• 1993

The flow behavior of the mycelial broth of glucoamylase hyperproducer Asp. niger No. PFST-38 for the production of glucoamylase were studied. The mycelial broth followed Bingham-pseudoplastic flow model described by Herschel-Bulkley equation. The yield stress increased with the increase in mycelial concentration. The dependency of the consistency index and the flow behavior index on the mycelial concentration could be expressed by a linear relationship. The consistency index increased proportionally with the mycelial concentration while the flow behavior index decreased with the increase in mycelial concentration. The flow property of the broth was related to the morphological data obtain in the previous study. The changes in apparent viscosity of the broth could be expressed as a function of the hyphal thickness as shown below.

• Proceedings of the Korean Society for Cognitive Science Conference
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• 2002.05a
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• pp.137-141
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• 2002

한국어 용언의 형태소 정보처리의 특성을 규명하기 위해 피동의 처리 양상을 살펴보았다. 한국어의 피동문은 용언에 파생접사가 붙어 이루어지는 경우와 '-어 지다'와 같이 구문 변형에 의해 이루어지는 경우로 나눌 수 있다. 본 연구에서는 이 중 피동 파생접사 '-이, -히, -리, -기'가 붙은 피동사만을 선정하여 고려대학교에 재학중인 일반인 학생을 대상으로 점화어휘판단 관제를 실시하였다. 실험조건은 표면적 형태와 기능으로 구분하여 4조건으로 설계하였고 SOA는 150msec과 750msec로 나누었다. 실험 결과 피동('어근+파생접사')의 정보처리는 선행연구의 '어간+(시제)선어말어미'의 결과와 유사한 형태를 보였으며, '어간+(연결)어말어미'와는 다른 결과를 보였다. 이런 결과로 미루어보아 어근과 접사는 각각 따로 저장되어 있다기보다는 '어근+접사'의 형태로 심성어휘집에 저장되어 있는 것으로 보인다. 기존의 형태소 분석에서 거론되고 있는 Fullist, Decomposition, Hybrid의 세 가지 모형으로는 한국어 용언의 다양한 표상 및 처리 과정을 설명하기 어려우므로 새로운 모형을 제시하고자 한다.

• Annual Conference on Human and Language Technology
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• 1999.10d
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• pp.167-172
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• 1999

한국어 형태소 분석기는 한국어를 분석하여 여러 다른 응용프로그램에 적용할 수 있는 기본적인 도구이다. 형태소 분석기를 응용하여 맞춤법 검사기나 정보검색, 기계번역, 음성인식 등에 적용할 수 있다. 본 논문에서는 형태소 분석기를 이용하여 여러 응용프로그램에 다목적으로 적용할 수 있도록 COM(Component Object Model)으로 인터페이스를 설계하고, 일례로 명사를 추출하는 응용프로그램을 구현하였다.

• Journal of Microbiology
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• v.39 no.3
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• pp.181-185
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• 2001

The morphological characteristics of newly isolated Cordyceps hepialidicola were characterized, and the phylogenetic relationships with other Cordyceps species were investigated using a sequence analysis of the internal transcribed spacer (ITS). The PCR product of 592 bp showed a homology of 92 and 91% with C. militaris and C. nutans, respectively, In an in vitro model using mouse peripheral blood mononuclear cells (PBMC), a methanol extract of C. hepialidicola induced multiple cytokines, including IFN-${\gamma}$ IL-4, and IL-18. The extract also enhanced the percentages of the CD4$\^$+/ and CD8$\sub$+/ T cells in the healthy murine PBMCs to 56.1% and 13.0%,respectively. The percentages of CD4$\^$+/ and CD8$\^$+/ in the untreated controls were 28.4 and 7.3%, and concanavalin A-treated positive controls were 62.4 and 18.3%, respectively.

• Phonetics and Speech Sciences
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• v.7 no.4
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• pp.49-55
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• 2015

It is argued in this paper that, in determining semantic similarity, Korean words should be recategorized with a focus on the semantic relation to ontology in light of cross-linguistic morphological variations. It is proposed, in particular, that Korean semantic similarity should be measured on three tracks, human judgements track, relatedness track, and cross-part-of-speech relations track. As demonstrated in Yang et al. (2015), GloVe, the unsupervised learning machine on semantic similarity, is applicable to Korean with its performance being compared with human judgement results. Based on this compatability, it was further thought that the model's performance might most likely vary with different kinds of specific relations in different languages. An attempt was made to analyze them in terms of two major Korean-specific categories involved in their lexical and cross-POS-relations. It is concluded that languages must be analyzed by varying methods so that semantic components across languages may allow varying semantic distance in the vector space models.

• Proceedings of the KSME Conference
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• 2003.04a
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• pp.1923-1929
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• 2003

The present study investigated the microcirculation of blood in the left common artery (LCCA). In order to develop a mathematical model for microcirculation in LCCA, the present study adopted preexisted set of measured morphological data on anatomy, mechanical properties of the coronary vessels, viscosity of blood, the basic laws of physics, and the appropriate boundary conditions. In this study, the statistical distribution of blood pressure, blood flow, and blood volume in the LCCA were determined based on the anatomical branching pattern of the coronary arterial tree and the statistical data of blood vessel dimensions. Our calculations were in good agreement with the previous studies. The present results showed that the mean longitudinal pressure drop profile was function of the vessel order numbers. It was found that the normalized pressure drop was a logarithmic function of the compliance.

• Journal of Haehwa Medicine
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• v.25 no.1
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• pp.37-44
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• 2016

Objectives : This study was designed to investigate the effect of Gamishinchubogun-tang (JiaweiShenzhuibujian-tang; GSB) on regeneration of PC12 cells. Methods : PC12 cells have been used extensively as a model for studying the cellular and molecular effects of neuronal cells. In order to check the effect of GSB on the regeneration of PC12 cells, the morphological change of PC12 cells were observed comparatively in GSB group and control group. Results : The significant changes in neurite length of PC12 cells have been observed on GSB group. In proportion to the concentration of GSB it was observed an increase in neurite outgrowth. Conclusions : This study confirmed that GSB made a significant influence on regeneration of PC12 cells.

• Elastomers and Composites
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• v.52 no.2
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• pp.131-135
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• 2017

Zinc nitrate hexahydrate [$Zn(NO_3){\cdot}6H_2O$] and sodium hydroxide [NaOH] were used as source reagents in the preparation of ZnO nanoparticles in an aqueous solution containing deionized water and ethanol in a ratio of 2:5 (v/v). ZnO nanoparticles were heated in an electric furnace at $700^{\circ}C$ for 2 h under an atmosphere of inert argon gas. The morphological and structural properties of the nanoparticles were characterized by scanning electron microscopy (SEM) and powder X-ray diffractometry (XRD). UV-vis spectrophotometry was used to analyze the photocatalytic degradation of 3-nitrophenol with ZnO nanoparticles as photocatalyst under ultraviolet irradiation at 254 nm. Evaluation of the kinetic of the photo-catalytic degradation of 3-nitrophenol indicated that the degradation of 3-nitrophenol with ZnO nanoparticles obeyed the pseudo-first order reaction rate model.

• Proceedings of the Korea Committee for Ocean Resources and Engineering Conference
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• 2006.11a
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• pp.445-448
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• 2006

본 연구는 기초적인 연구로 낙동강 하구역을 단순 사각형 만의 형상을 가진 지형으로 설정하고 내부 지형의 변화(수심 및 사주 면적)에 따른 해수유동장을 해수유동 수심적분모델로 구축하여 계산하였다. 계산된 유속장 결과를 바탕으로 내부 지형의 대표단면에서의 단면유량플럭스를 계산하여 상호 비교함으로써 하구역내 사주의 생성 및 발달(내부 지형 용적 변화)에 따른 하구역 입구부에서의 해수용적 변화(순환)의 정도를 평가하고자 하였다.

• Journal of Korean Library and Information Science Society
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• v.35 no.3
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• pp.271-291
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• 2004

Such information services source like digital library has been asked information services of atypical multimedia database like image, voice, VOD/AOD. Examined in this study are suggestions such as word-phrase generator, syllable recoverer, morphological analyzer, corrector for voice processing. Suggested voice processing technique transform voice database into tort database, then extract index database from text database. On top of this, the study suggest a information retrieval model to use in extracted index database, voice full-text information retrieval.