• 한국자동차공학회논문집
• /
• 제21권5호
• /
• pp.113-120
• /
• 2013

This paper presents a mathematical model to determine the optimal length of static messages that can achieve more efficient use of a FlexRay network. In order to determine the optimal length of static message, the proposed model evaluates the given set of messages with respect to a network utilization index, which is defined in this work. The efficient use of a FlexRay network is achieved by reallocating any static message whose length is equal or greater than the resulting value to the dynamic segment. The effectiveness of the proposed method is investigated by applying to the SAE benchmark data.

• 한국식품조리과학회지
• /
• 제17권4호
• /
• pp.380-390
• /
• 2001

Utilization practice of garlic and seasonings in industry foodservice was surveyed by questionnaire. Statistical data analysis was performed with SAS package program in order to have frequencies, means, t-test, ANOVA and Duncan's multiple range test. The results of this study can be summarized as follows; The mean value of Food Processing Index(FPI) score for purchased vegetable and seasonings is 3.5 which indicates the prepreparation is between partially preprepared and completely preprepared. The garlic was mainly purchased from brokers(51.0%), on a daily basis(58.8%) and peeled-form(74.5%). The average purchased amount is 6.66㎏ at a time. The unit price of the garlic makes significant differences(p＜0.05) by the scale and location of foodservice establishments. As for the storage method and Period, in room temperature, no storage(2.1%) and for one day(2.1%) and in refrigeration, for one day(39.6%) and fer three days(18.7%).

• 환경영향평가
• /
• 제22권3호
• /
• pp.265-276
• /
• 2013

This study assessed documentation status of each environmental assessment items by analyzing the 243 case of marine EIS on the Consultation System of Sea Area Utilization. Observed rate of tidal elevation, current, temperature, salinity in maine environment were below 20%. The EFDC tool is applied substantially in hydrodynamic modeling. The verification process, however, is very insufficient using the recent observed data. Also, in-situ assessment rate of pelagic organism such as phytoplankton was below 50%, and assessment for Chlorophyll a was not accomplished. Ecological index evaluation for zooplankton and benthic ecosystem were not considered in statements. Especially, the rational assessment on the fisheries resources and protected species were very limited. It was necessary that the core assessment items (checklists) were established for environmental scoping. Furthermore, suggestion of information related to development, regional coastal management plan, aquaculture farms, and facilities were enhanced. The redundancy problem of proceedings between Environmental Impact Assessment and Sea Area Utilization Assessment System was improved.

• 한국건축시공학회지
• /
• 제19권3호
• /
• pp.263-272
• /
• 2019

BIM과 모듈러 공법은 건설 산업의 위기를 극복하는데 도움이 되는 중요한 기술로 인식되고 있다. 그러나 현재 국내 모듈러 건축 프로젝트에서 BIM의 활용은 미미한 수준이며 구체적인 활용지침이 제시되지 못하고 있다. 이에 따라 본 연구에서는 모듈러 건축공사의 현장시공계획단계를 위한 BIM 활용성 분석을 목적으로 하였다. 첫째, 기존문헌 고찰과 전문가 인터뷰를 통해 적용 가능한 BIM 업무를 선정하였으며, 모듈러 건축공사의 시공계획서를 분석하여 BIM 활용 업무를 5가지로 분류하였다. 이후 설문을 통해 각 항목에 대한 BIM 활용성을 필요성과 효율성으로 분석하였으며 이를 BIM utilization Index(BIM UI)를 통해 제시하였다. 설문 결과 모듈간 접합부 시공상세도 구축, 양중계획 검토, 기타공사 주요 시공부위의 상세도 구축, 현장공정 계획 검토, 그리고 현장배치계획 검토가 0.811, 0.787, 0.770, 0.729, 0.699 순으로 분석되었다. 이후 사례연구를 통해 BIM을 적용한 BIM 기반 시공계획서를 도출하여 전문가 자문을 실시하고 논의하였다. 본 연구의 결과는 향후 모듈러 프로젝트에서 BIM의 적정한 활용 방안을 제시하는데 활용될 수 있을 것이다.

• 디지털정책학회지
• /
• 제1권2호
• /
• pp.9-15
• /
• 2022

2011년, 세계경제포럼(The World Economic Forum)은 물-에너지-식량을 세계 3대 위험군에 포함했다. 물-에너지-식량은 국가의 발전 전략과 국민의 삶과 관계된다. 본 연구에서는 SBM-Malmquist 지수를 기반으로 중국의 2011-2020년 물-에너지-식량 종합 이용 효율성을 계산한다. 측정 결과를 살펴보면, 중국 전체 물-에너지-식량의 종합 이용은 효율성이 낮으나 상승세를 보였다. 전국적으로 물-에너지-식량 종합 이용 효율성은 뚜렷한 차별성이 존재하며 전반적으로 동부> 중부> 서부의 지리적 분포 구도를 보인다. 전국에 Beijing과 Shanghai만 진정한 유효에 이르고 기타 각 성의 투입과 산출 사이에는 모두 비효율 상태가 존재한다. 물-에너지-식량 종합 이용 효율성의 Malmquist 지수는 1.136으로 상승세를 보이며 기술효율과 기술진보를 통해 중국의 물-에너지-식량 종합 이용 효율성의 향상을 이끌고 있다. 하루빨리 물-에너지-식량 문제에 있어 전략적높이를 끌어올려 그 발전에 대한 정책적 지원을 해야 한다. 각 지역은 지역 간 조율기구를 설립해야 하며 각 성의 식량 생산량, 수자원 분포 등 문제에 따라 맞춤형 조치를 제정해 경제가 조방형 발전에서 녹색 발전으로 전환되도록 조속히 추진해야 한다.

• 보건행정학회지
• /
• 제11권2호
• /
• pp.123-140
• /
• 2001

Hypotheses In health services research are becoming increasingly more complex and specific. As a result, health services research studies often include multiple independent, intervening, and dependent variables in a single hypothesis. Nevertheless, the statistical models adopted by health services researchers have failed to keep pace with the increasing complexity and specificity of hypotheses and research designs. This article introduces a statistical model well suited for complex and specific hypotheses tests in health services research studies. The covariance structure modeling(CSM) methodology is especially applied to regional relevance indices(RIs) to assess the impact of health resources and healthcare utilization. Data on secondary statistics and health insurance claims were collected by each catchment area. The model for RI was justified by direct and indirect effects of three latent variables measured by seven observed variables, using ten structural equations. The resulting structural model revealed significant direct effects of the structure of health resources but indirect effects of the quantity on RIs, and explained 82% of correlation matrix of measurement variables. Two variables, the number of beds and the portion of specialists among medical doctors, became to have significant effects on RIs by being analyzed using the CSM methodology, while they were insignificant in the regression model. Recommendations for the CSM methodology on health service research data are provided.

• 한국식품영양과학회지
• /
• 제20권2호
• /
• pp.126-132
• /
• 1991

식이 단백질의 질적인 차이에 의해 뇨중에 배설되는 산가용성 펩타이드의 배설과 단백질의 체내 이용효율을 검토하였다. PE식이의 산가용성 펩타이드의 배설량과 ASP-form 아미노산 pattern을 G식이, C식이, GLT식이 군과 비교한 결과, 각 단백질식이군에서 산가용성 펩타이드 배설량이 많았지만, 산가용성 펩타이드를 구서 고 있는 아미노산의 조성은 거의 유사하였으므로 뇨중 펩타이드가 내인성 대사 생성물임이 확이되었다. 그리고 뇨중에 배설되는 산가용성 펩타이드를 토대로 각 식이 단백질의 체내 이용효율을 계산한 결과 G식이는 $74{\pm}1%$, C식이는 $93{\pm}3%$, GLT식이는 $91{\pm}2%$였다.TEX>였다.

• 한국해양환경ㆍ에너지학회지
• /
• 제15권2호
• /
• pp.118-125
• /
• 2012

세계인구는 산업혁명 이후 급격히 증가하여 2012년 현재 약 70억 명이며, 2025년에는 80억 명까지 증가할 것으로 예측되고 있다. 개발도상국에서는 삶의 질이 개선됨에 따라 자원과 에너지의 수요가 전세계적으로 증가하고 있다. 결과적으로, 인류는 지구온난화, 물 부족, 식량부족, 자원 및 에너지 위기 등의 전지구적인 시급한 문제에 직면하고 있다. 이러한 문제점을 해결하기 위한 이산화탄소 해양격리, 해수담수화, 인공용승, 심해자원(개발), 해양에너지 등의 해양활용기술이 발전되고 있다. 이러한 기술들은 지속가능한 사회시스템보다는 화석연료에 기반한 편리함으로 인하여 발전되었기 때문에 지속가능성 및 공공의 수용 관점에서 이러한 기술들을 평가하는 것이 중요하다. 일본 조선해양공학회의 포괄적 해양압력 평가 및 분류기술 연구위원회는 지속가능성과 공공의 수용 입장에서 해양활용기술을 평가하기 위하여 환경 지속성과 경제적 타당성을 예측하는데 이용되는 지시자로써 트리플 I을 제안한 바 있다. 본 논문에서는 생태발자국과 환경영향평가가 결합된 트리플 I 지수, 트리플 I 지수의 개념과 구조, 트리플 I에서 경제-생태 전환 계수에 대하여 다루고 있다.

• 유통과학연구
• /
• 제13권1호
• /
• pp.57-70
• /
• 2015

Purpose - Open source software has high utilization in most of the server market. The utilization of open source software is a global trend. Particularly, Internet infrastructure and platform software open source software development has increased rapidly. Since 2003, the Korean government has published open source software promotion policies and a supply promotion policy. The dynamism of the open source software market, the lack of relevant expertise, and the market transformation due to reasons such as changes in the relevant technology occur slowly in relation to adoption. Therefore, this study proposes an assessment model of services provided in an open source software service company. In this study, the service level of open source software companies is classified into an enterprise-level assessment area, the service level assessment area, and service area. The assessment model is developed from an on-site driven evaluation index and proposed evaluation framework; the evaluation procedures and evaluation methods are used to achieve the research objective, involving an impartial evaluation model implemented after pilot testing and validation. Research Design, data, and methodology - This study adopted an iteration development model to accommodate various requirements, and presented and validated the assessment model to address the situation of the open source software service company. Phase 1 - Theoretical background and literature review Phase 2 - Research on an evaluation index based on the open source software service company Phase 3 - Index improvement through expert validation Phase 4 - Finalizing an evaluation model reflecting additional requirements Based on the open source software adoption case study and latest technology trends, we developed an open source software service concept definition and classification of public service activities for open source software service companies. We also presented open source software service company service level measures by developing a service level factor analysis assessment. The Behavior-Structure-Evolution Evaluation Model (BSEM) proposed in this study consisted of a rating methodology for calculating the level that can be granted through the assessment and evaluation of an enterprise-level data model. An open source software service company's service comprises the service area and service domain, while the technology acceptance model comprises the service area, technical domain, technical sub-domain, and open source software name. Finally, the evaluation index comprises the evaluation group, category, and items. Results - Utilization of an open source software service level evaluation model For the development of an open source software service level evaluation model, common service providers need to standardize the quality of the service, so that surveys and expert workshops performed in open source software service companies can establish the evaluation criteria according to their qualitative differences. Conclusion - Based on this evaluation model's systematic evaluation process and monitoring, an open source software service adoption company can acquire reliable information for open source software adoption. Inducing the growth of open source software service companies will facilitate the development of the open source software industry.

• 한국철도학회:학술대회논문집
• /
• 한국철도학회 2011년도 정기총회 및 추계학술대회 논문집
• /
• pp.3289-3298
• /
• 2011

The region trunk line railroad route considering regional characters is the final aim of railroad management to operators and passengers. For reflecting these aspect to make policies, The study has been performed by defining and analyzing the informations. According to the methodological and political research, First of all, The feature for demand and supply of railroad in the region trunk line railroad route is that demand aspect was excessively influenced by supply aspect. The demand sensitivity was measured very high on the supply changes. The survey, Containing the regional characters, result the railway and bus use patterns are clearly different and this feature is simiral to that of janghang and pohang district. also, In railroad case, Demand shifts from railroad to other transport sensitively. Therefore, We make some new index besides existing index, which like to management index, rate of boarding, rate of using. After that, We suggest passengers and operator's win-win alternatives.