• Architectural research
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• 제16권3호
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• pp.93-100
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• 2014

Existing BIM(Building Information Modeling) based energy evaluation tools cannot be utilized enough for the potential performance of BIM because most of them have not provided the integrated model for energy evaluation, assessment of the material, cost of the construction, and so on. This research aims to propose and develop a new application, EcoBIM, to support an integrated evaluation of the energy and cost efficiencies of the design alternatives within the design process. The proposed application functions as a BIM-based evaluation system that calculates energy-savings performance as well as the construction cost of the alternatives at the design stage. This study mainly focuses on the possibilities of developing the proposed technology. We also suggest an advanced design process using the proposed system, corresponding to changes of national regulations in Korea. This study deduce that EcoBIM can allow architects to make suitable decisions regarding energy- and cost-efficient designs. The proposed design process will allow architects not only to check the eco-friendly performance of design alternatives but also predict the operation cost in a certain period in the future. EcoBIM can prevent large-scale design changes required to obtain environmental certification and enable the owner to make an informed decision about the initial investment of construction according to the result of the analysis of the energy requirement at the design stage.

• KIEE International Transactions on Power Engineering
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• 제3A권1호
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• pp.7-16
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• 2003

A new method to evaluate the protection capability of distribution systems is reported in this paper. This work describes the fuzzy evaluation attributes and aggregation method of evaluation results based on a hierarchical model and the modified combination rule. An evaluation grade index called "protectability" is proposed and is expected to be a very uscful tool in defining an optimal protection and realizing the adaptive protection.rotection.

• 한국IT서비스학회지
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• 제11권1호
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• pp.109-123
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• 2012

There are many evaluation models to measure the informatization level of an organization and information system project in the ministry of National Defense of Korea. A information system has to keep up with the environment change as well as the advanced recent information technology (IT). Therefore, the evaluation of an information system project to enhance the performance of the information system should be different from the existing evaluation methods. This study suggests an evaluation case of information system projects to enhance the performance of an information system. In order to achieve the objective of this study, the following steps are taken. First, it reviews the background and the scope of the project to enhance the performance of the Defense Material Information System (DMIS). And it sets up the evaluation logic and develops performance indexes. Then it applies these newly developed performance indexes to the information system project and measures the performance. From this study, we found that both the diffusion and the experience accumulation by its continuous use are significant factors in such evaluations.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2013년도 춘계학술대회
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• pp.889-891
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• 2013

자동차 산업이 발전하면서 초기 자동차는 기계적 방식에 따라 동작하였지만 현재의 자동차는 전자 산업의 고도화로 인해 전기 전자 방식으로 점차 변경되어 가고 있다. 국내 자동도 산업도 이러한 추세에 따라 기계적 장치에서 전기 전자 장치로 자동차를 개발하고 있으며 전기 전자 장치를 제어하는 소프트웨어를 국산화하려는 시도를 수행하고 있다. 정부에서는 앞으로 한국의 미래 먹거리인 자동차 산업의 발전을 위해 차량 전장 소프트웨어 R&D 프로젝트를 진행 중이며 자동차 전장 소프트웨어의 핵심 기술 및 품질을 확보하기 위해 노력하고 있다. 하지만 자동차 소프트웨어 R&D 프로젝트를 통해서 개발된 자동차 전장 소프트웨어의 품질을 측정할 수 있는 모델이 존재하지 않아 R&D 프로젝트 평가하는데 어려움이 발행하였다. 또한 자동차 전장 소프트웨어 분야 R&D 프로젝트에서 사용할 수 있는 품질 평가 모델이 필요하게 되었다. 이에 따라 본고에서는 자동차 전장 소프트웨어의 품질을 평가 할 수 있는 ISO/IEC9126 기반 자동차 전장 소프트웨어 품질 평가 모델을 제시하고자 한다.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2009년도 춘계학술대회
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• pp.565-568
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• 2009

오늘날 많은 기업들은 환경오염 방지 및 기업전체의 소모성 비용을 절약하여 경영혁신을 취하는 실정이고, 프린터 토너절감 솔루션은 기업에서 사용되는 소모성 비용인 프린터 출력비용을 감소시키고 출력으로 발생하는 환경오염을 줄이는 해결책으로 개발 및 사용되고 있다. 프린터 절감 솔루션은 국내외적으로 개발 초기 단계에 있고, 많은 기업에서 구축하지 않아 시장 활성화 초기 제품이며 그로인해 개발사에서 시장에 판매하는 제품의 품질이 아직 성숙되지 못한 실정으로 테스트 및 제품인증을 통해 제품에 대한 품질을 확보하는 중에 있다. 본 논문에서는 프린터 토너절감 소프트웨어의 품질을 향상시킬 수 있는 시험 항목을 기능성 및 비기능성에 기반 하여 도출하였고, 도출한 시험항목을 통해 시험을 수행하여 제품의 품질을 평가하는 방법에 대해서 기술하였다.

• Current Photovoltaic Research
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• 제1권1호
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• pp.1-10
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• 2013

The photovoltaic (PV) industry, which occupies about 80% share of domestic new and renewable energy (NRE) sales, has played an important role in the development of the Korean NRE industry. This was made possible by the government's implementation of the 3rd Basic New and Renewable Energy Plan, which promoted strategic PV R&D, infrastructure building, and a variety of PV deployment programs. For instance, 'One Million Green Homes', 'Feed in Tariff', and 'Renewable Portfolio Standards' programs contributed greatly to the dissemination of PV systems in the country. Furthermore, these programs were supported with more than 380 billion Won over 6 year period (2007~2012). The strategic PV R&D contributed to the fast follow-up in commercial technologies. Because of the recent, sharp decline in PV prices caused by oversupply and economic crisis in European countries, both foreign and domestic PV companies are going through painful restructuring. Under these circumstances, the Korean PV industry needs to find a new strategy for making a breakthrough, and in this sense a proactive role of the Korean government is desperately needed.

• Journal of Preventive Medicine and Public Health
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• 제55권5호
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• pp.415-423
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• 2022

Economic evaluations in the healthcare are used to assess economic efficiency of pharmaceuticals and medical interventions such as diagnoses and medical procedures. This study introduces the main concepts of economic evaluation across its key steps: planning, outcome and cost calculation, modeling, cost-effectiveness results, uncertainty analysis, and decision-making. When planning an economic evaluation, we determine the study population, intervention, comparators, perspectives, time horizon, discount rates, and type of economic evaluation. In healthcare economic evaluations, outcomes include changes in mortality, the survival rate, life years, and quality-adjusted life years, while costs include medical, non-medical, and productivity costs. Model-based economic evaluations, including decision tree and Markov models, are mainly used to calculate the total costs and total effects. In cost-effectiveness or costutility analyses, cost-effectiveness is evaluated using the incremental cost-effectiveness ratio, which is the additional cost per one additional unit of effectiveness gained by an intervention compared with a comparator. All outcomes have uncertainties owing to limited evidence, diverse methodologies, and unexplained variation. Thus, researchers should review these uncertainties and confirm their robustness. We hope to contribute to the establishment and dissemination of economic evaluation methodologies that reflect Korean clinical and research environment and ultimately improve the rationality of healthcare policies.

• 한국생산제조학회지
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• 제26권4호
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• pp.436-440
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• 2017

This study evaluated the design and structural integrity of a three-axle bogie frame in a railway freight car through a numerical analysis and an experimental evaluation. A three-axle bogie frame, which supports the weight of the car body and load, is required to transport heavier cargo because two-axle vehicles have structural limitations. Therefore, this study performed a structural analysis and static load tests to evaluate the design and structural integrity of a three-axle bogie frame. The results obtained from the numerical analysis were compared to those of the experiments. For the bogie frame used in the experiments, a failure evaluation was performed using non-destructive methods. The numerical analysis and experimental evaluation were satisfactory for the structural integrity evaluation.

• 한국분말재료학회지
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• 제15권6호
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• pp.458-465
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• 2008

The hot deformation characteristics of pure molybdenum was investigated in the temperature range of $600{\sim}1200^{\circ}C$ and strain rate range of $0.01{\sim}10.0/s$ using a Gleeble test machine. The power dissipation map for hot working was developed on the basis of the Dynamic Materials Model. According to the map, dynamic recrystallization (DRX) occurs in the temperature range of $1000{\sim}1100^{\circ}C$ and the strain rate range of $0.01{\sim}10.0/s$, which are the optimum conditions for hot working of this material. The average grain size after DRX is $5{\mu}m$. The material undergoes flow instabilities at temperatures of $900{\sim}1200^{\circ}C$ and the strain rates of $0.01{\sim}10.0/s$, as calculated by the continuum instability criterion.

• KIEE International Transactions on Electrophysics and Applications
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• 제5C권4호
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• pp.145-151
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• 2005

The synthetic breaking test method was developed to evaluate the breaking performance of ultra high-voltage circuit breaker and made up of two independent circuits; current source circuit and voltage source circuit. In application of this test method, it is necessary to extend the arc of the test breaker. So, the new re-ignition system using VTGS (Vacuum Triggered Gap-Switch) was constructed to improve the efficiency and reliability of this test. In this re-ignition system, VTGS operates in high vacuum state of $5{\time}10^{17}$torr and control system consists of the triggering device and the air M-G (Motor-Generator). This re-ignition system showed the operating characteristics, such as delay time ($t_d$) and jitter time ($t_j$ not exceeding 5us and 1us respectively, and had the operating voltage of $25\~150kVdc$ at the gap distance of 24mm.