• Journal of Microbiology and Biotechnology
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• 제3권3호
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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.

• 한국기술혁신학회:학술대회논문집
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• 한국기술혁신학회 2001년도 춘계학술대회:발표자료
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• pp.389-408
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• 2001

Evaluating the results of National Nuclear R&D projects has critical importance in nuclear management aspect. This paper uses multi-attribute utility theory as a basis for obtaining a value Index to assess the results of nuclear R&D projects and applies the theory to a specific Korean case study. To structure and quantify basic values for the . evaluation, we elicited important attributes, then refined and structured them into a hierarchy. A multi-attribute index is constructed as a multi-attribute utility function, based on value judgments provided by a group of technical experts, policy makers, and decision-makers. The implications of the results are also discussed. We found that the work and results can provide valuable insights for assessment of nuclear R&D consequences.

• Journal of Oral Medicine and Pain
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• 제23권3호
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• pp.271-276
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• 1998

The purpose of the pilot study was to know the relationship between halitosis and oral hygine, to examine the difference of the positon of the straw to be placed in the oral cavity by using Halimeter. Fourteen persons that has good health condition without halitosis were participated in this pilot study. They were treated twice prophylaxis and then they had not tooth brushing during two weeks. After two weeks, they were examied to gingival index, plaque index, VSC valuses. The obtained results were as follosws : 1. No significant difference of VSC values were observed during two weeks withoiut tooth brushing. But significant difference of gingival index, plaque index were observed. It was suggested that halitosis was not caused by only plaque, complex reasons(salivary function, stress etc) maybe caused halitosis. 2. Here were significant reduction of VSC values as the depth of plastic straw into the oral cavity decreased (p<0.05)

• 한국BIM학회 논문집
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• 제9권1호
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• pp.32-41
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• 2019

As population in Sarasota and Manatee Counties, Florida in the United States is projected to increase, land use changes from land development happen continuously. The more land development means the more impervious surfaces and stormwater runoff to Sarasota Bay, which causes critical impact on the resiliency of the ecosystem. In order to decrease its impact on water quality and the ecosystem function of Sarasota Bay, it is important to assess the resilient status of communities that create negative impacts on the ecosystem. Three types of guiding principles of resiliency for Sarasota Bay watershed are suggested. To assess resiliency status, three indexes - vulnerability index, socio-economic index, and ecological index are developed and analyzed by using geographic information system for each census tract in the two counties. Since each indicator for vulnerability index, socio-economic index, and ecological index is measured with different metrics, statistical standardizing method - distance from the best and worst performers is used for this study to directly compare and combine them all to show total resilience score for each census tract. Also, the ten most and the ten least scores for the total resilience index scores are spatially distributed for better understanding which census tracts are most or least resilient. As Sarasota Watershed boundary is also overlaid, it is easy to understand how each census tract attains its resilience and how each census tract impacts to Sarasota Bay ecosystem. Based on results of the resiliency assessment several recommendations, guidelines, or policies for attaining or enhancing resiliency are suggested.

• International Journal of Advanced Culture Technology
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• 제9권3호
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• pp.131-141
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• 2021

The present study is following a series of research investigations on design resources coming from collected data referring to users' awareness and preferences. The aim of this research is to test the Healthcare Environmental Color Index as a basis for practitioners in the field of healthcare design. An array of color samples selected from previous research, have been presented to the respondents via an online survey, in order to identify the preferences of the two groups on the relation between environmental color and health. As a result of the first experiment and through the comparison of processed data, the maximum percentage of respondents from each group is validating the relation between environmental color and health. For the second experiment we intend to highlight the patterns of color preferences for each group, and thus to test the color samples healing function. The compared data also showed a higher awareness of Koreans than Romanians on the potential of color applied to healing environment. Last but not least in the third experiment we show the top five color samples preferred by each group. It is significant that the comparison of the results validated once more some of our previous findings related to the healthcare environment, such as: the general preference for the green hue (associated to fatigue relax according to color psychology) and the blue hue (sedation release effect) but also the yellow hue - associated to bright energy. Three out of the top five preferred color samples have been identical to both groups while the other two samples have shown characteristic variations. These results show that similarities are strong and can be used in a glocal design strategy as an accessible tool for any practitioner. Based on the Healthcare Environmental Color Index and users' preferences analysis, a new design culture for healthcare can be established and developed.

• 한국임상수의학회지
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• 제32권2호
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• pp.162-167
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• 2015

좌심실의 용적과부하와 심할 경우 심근 기능부전을 일으키는 질병에서 Tei index는 심근기능을 평가하는데 있어 비교적 측정이 쉽고 재현율이 양호하다고 보고된 심초음파 측정 요소이다. 본 연구에서는 정상 및 퇴행성 이첨판 질환이 있는 개에서 조직도플러와 펄스파 도플러를 통해 Tei index 값을 측정하고, 다른 초음파평가지표와 비교평가하였다. 정상 개에서 Tei index 측정을 위해 심혈관계에 이상이 없는 13마리의 비글견을 사용하였으며, 이첨판 역류를 진단받은 환자 31마리를 환자군으로 하여 각각의 환자는 임상증상에 따라 세 개의 그룹으로 나뉘어 각 측정치를 비교하였다. 본 실험 결과에서 대부분의 측정항목들이 좋은 신뢰도를 보였으며, Tei index의 경우 조직도플러를 통한 Tei index가 펄스파 도플러에 비해 좀 더 높은 신뢰도를 나타내었다. 본 실험에서 정상 개에서 Tei index는 조직도 플러의 심실외벽과 중격에서 각각 $0.58{\pm}0.07$, $0.60{\pm}0.07$로 측정되었다. 조직도플러 검사 결과 중격과 좌심실벽 지점간에는 Tei index의 차이가 나타나지 않았다. 펄스파도플러를 통해 측정한 Tei index는 조직도플러를 통해 측정한 Tei index에 비해 유의성 있게 낮게 측정되었다. 정상 및 퇴행성이첨판 질환이 있는 환자군에서 Tei index는 두 가지 측정 방식 모두에서 이첨판 역류의 임상증상에 따라 그룹별로 유의적으로 증가하는 것으로 나타났다. 따라서, Teiindex는 이첨판 역류가 있는 개에서 좌심실 기능 저하를 반영하는 유용한 검사 요소로 생각된다.

• 서비스연구
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• 제5권1호
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• pp.91-103
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• 2015

본 논문은 한국거래소(KRX)에서 제공한 KT(한국통신)와 SK텔레콤의 현물수익률 및 KT와 SK텔레콤 선물수익률 간의 선도-지연효과를 분석하였다. 분석을 위한 통계분석 기간은 2012년 1월 1일부터 2014년 12월 31일까지이며, 자료는 일별 종가자료 608개를 사용하였고, 분석도구로는 E-Views 6을 이용하여 VAR 모형을 통한 그랜저 인과관계분석(Granger Causality test)과 충격반응분석(Impulse Response Function) 및 분산분해(Variance Decomposition)를 실시하였다. 주요 분석결과는 다음과 같다. 첫째, 그랜저 인과관계분석결과 KT선물수익률과 SK텔레콤 선물수익률은 KT현물수익률과 SK텔레콤 현물수익률에 대하여 강한 예측력이 있다는 것으로 추론할 수 있다. 그러나 KT현물수익률과 SK텔레콤 현물수익률은 KT선물수익률과 SK텔레콤 선물수익률에 대한 예측력이 존재하지 않고 있다는 것을 알 수 있었다. 둘째, 충격반응분석결과 KT선물수익률과 SK텔레콤 선물수익률은 KT현물수익률과 SK텔레콤 현물수익률에 즉각적으로 영향을 미치다 일정시차가 지난 후에 사라지는 것으로 나타났다. 마지막으로 분산분해 분석결과 KT현물수익률과 SK텔레콤 현물수익률의 변화 중에 많은 변화가 KT선물수익률과 SK텔레콤 선물수익률의 변화에 의하여 설명되어짐을 추론할 수 있다. 이러한 분석결과는 개별 주식 현물과 선물을 운용하고 있는 개인투자자 뿐만 아니라 집합투자업자 및 연기금들이 투자정책을 수립하는데 있어서 여러 가지 의미있는 시사점을 제공해 줄 것으로 판단된다. 또한 선물과 옵션시장을 담당하는 한국거래소와 국내외 투자자들이 자산배분정책과 포트폴리오 정책을 수립하는데도 있어서도 유익한 시사점을 제공할 것으로 판단된다.

• 한국통신학회논문지
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• 제18권12호
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• pp.1935-1944
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• 1993

레이저 다이오드단면의 최적 무반사 코팅 조건을 활성층 두께의 함수로써 세가지 간단한 수치해석 방법을 사용하여 계산하였다. 세가지 간단한 수치해석 방법을 사용하여 얻은 결과가 서로 가른 것은 각 방법에서 사용한 레이저 다이오드내의 유효 굴절율이 다르기 때문이다. 또한 간단한 수치해석 방법의 정확성을 검토하기위하여 정확한 수치해석 결과와 그 결과들을 비교하였다. 레이저 다이오드의 유효 굴절율이 도과모드를 구성하는 각 편면파의 입사간도에 따라 변해 굴절율이 도파모드를 구성하는 각 평면파의 입사각도 따라 변화하도록 설정한 방법이 TE와 TM 모드에 대해서 또 활성층 굴절율과 클래딩층의 굴절율차가 작은 경우 클 경우 각각에 대하여 정확한 수치해석 결과와 잘 일치함을 알 수 있었다.

• 대한간호학회지
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• 제33권2호
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• pp.275-283
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• 2003

Purpose: This study was to classify elderly in long-term care hospitals for using Resource Utilization Group(RUG-III) and to consider feasibility of payment method based on RUG-III classification system in Korea. Method: This study designed by measuring resident characteristics using the Resident Assessment Instrument-Minimum Data Set(RAI-MDS) and staff time. The data were collected from 382 elderly over sixty-year old, inpatient in the five long-term care hospitals. Staff time was converted into standard time based on the average wage of nurse and aids. Result: The subjects were classified into 4 groups. The group of Clinically Complex was the largest(46.3%), Reduced Physical Function(27.2%), Behavior Problem(17.0%), and Impaired Cognition(9.4%). The average resource use for one resident in terms of care time(nurses, aids) was 183.7 minutes a day. Relative resource use was expressed as a case mix index(CMI) calculated as a proportion of mean resource use. The CMI of Clinically Complex group was the largest(1.10), and then Reduced Physical Function(0.93), Behavior Problem(0.93), and Impaired Cognition(0.83) followed. The difference of the resource use showed statistical significance between major groups(p<0.0001). Conclusion: The results of this study showed that the RUG-III classification system differentiates resources provided to elderly in long-term care hospitals in Korea.

• 한국농공학회지
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• 제37권E호
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• pp.72-78
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• 1995

To support some knowledge in planning irrigation system, short or long-term irrigation scheduling or determining irrigation reservoir capacity, it is necessary to estimate peak irrigation requirements and seasonal distribution of water demands for various return periods. In this paper Dry Day Index and Probable Evapotranspiration were evaluated to decide seasonal consumptive use of paddy rice for a design year using several decades' daily rainfall data and 5 years'('82~'86) actual evapotranspiration data, respectively. To obtain Dry Day Index that is defined as the number of probable dry days for a given period, Slade unsymmetrical distribution function was adopted. Dry Day Index was analysed for 5 and 10-day intervals. Each of them was evaluated with return periods of 1, 3, 5, 10 and 20 year. Their singnificance was tested by X$^2$ method. Based on these values, the Probable Evaportanspiration, that is the average daily ET both in dry days and rainy days during a given period, was estimated. Crop coefficient was also determined by the modified Penman equation proposed by Doorenbos & Pruitt.