• Corrosion Science and Technology
• /
• 제13권2호
• /
• pp.62-69
• /
• 2014

A huge number of carbon steel piping components installed in the secondary system of nuclear power plants are exposed to aging mechanisms such as FAC (Flow-Accelerated Corrosion), Cavitation, Flashing, and LDIE (Liquid Droplet Impingement Erosion). Those aging mechanisms can lead to thinning of the piping components. To manage the wall thinning degradation, most of utilities in the world predict the wall thinning rate based on the computational program such as CHECWORKS, COMSY, and BRT-CICERO, evaluate the UT (Ultrasonic Test) data, and determine next inspection timing, repair or replacement, if needed. There are several evaluation methods, such as band, blanket, and strip methods, commonly used for determining the wear of piping components from single UT inspection data. It has been identified that those single UT evaluation methods not only do not consider the manufacturing features of pipes, but also may exclude the data of the most thinned point when determining the representative wear rate of piping components. This paper describes a newly developed single UT evaluation method, E-Cross method, for solving above problems and introduces application examples for several pipes and elbows. It was identified that the E-Cross method using the length and width of UT data excluded the most thinned points appropriate as the single UT evaluation method for thinned piping components.

• 전기학회논문지
• /
• 제64권10호
• /
• pp.1411-1417
• /
• 2015

The installation of PV system to the power distribution system is being increased as one of solutions for environmental pollution and energy crisis. However, the efficiency of PV system is getting decreased because of the aging phenomenon and several operation obstacles. Therefore, The technology development of aging diagnosis of PV modules are required in order to improve operation performance of PV modules. This paper proposes evaluation algorithm for aging state in PV modules by using the electrical characteristics of PV modules and environmental factors. And also, this paper presents a operation evaluation system of PV modules based on the proposed aging diagnosis algorithm of PV modules. From the simulation results of proposed evaluation system, it is confirmed that the proposed algorithm is a useful tool for aging diagnosis of PV systems.

• 정보학연구
• /
• 제3권3호
• /
• pp.27-37
• /
• 2000

정보보호 제품의 신뢰성 보증에 대한 평가 기준은 통일을 가져왔지만 국가별 평가 방법 등의 객관성 확보는 모호한 부분이 있다. 즉, 정보보호 제품의 취약성 평가에는 평가의 범위, 깊이, 시험 등에 적용하는 도구와 시나리오, 그리고 평가자 등이 있으나 이러한 요소들에 따라 평가 결과가 달라질 수 있으므로 평가의 공정성, 객관성 확보에 어려움이 있다. 따라서 본 논문은 정보보호 제품 보안 취약성 평가의 공정성, 객관성, 그리고 효율성을 보증할 수 있는 정보보호 제품 보안 취약성 평가 방법을 제안하고, 평가 수행을 자동화 할 수 있는 시스템(TSVES)을 설계 구현하였다.

• 한국전자거래학회지
• /
• 제12권2호
• /
• pp.155-194
• /
• 2007

본 연구의 목적은 최근 급속히 확산되고 있는 유비쿼터스 컴퓨팅 관련 기술 개발의 기준이 되고 있는 UCT(Ubiquitous Computing Technology)기반 서비스 시나리오의 실질적인 구현 가능성을 종합적으로 평가하는 다면평가방법론을 제안하는 것이다. 다면평가는 제안된 UCT기반 서비스 시나리오에 대하여 기술성, 사업성, 수용성의 3차원으로 평가하여 개별 시나리오의 구현 가능성 및 타당성에 대한 종합적인 평가를 가능하게 해주는 평가방법론이다. 이것은 기존 UCT기반 서비스 시나리오 관련 평가방법론의 부재를 극복하기 위해 제안되었다. 또한 기존에 제안된 기술가치 평가, 재무적 평가(ROI, ROA 등) 등 현재 구현되지 않는 UCT기반 서비스 시나리오의 특성상 도출 불가능 하거나 그 의미를 부여하기 어려운 파라미터를 이용하는 평가 방법의 한계를 극복하기 위해 제안되었다. 따라서 이는 다양한 분야에서 제안되는 UCT기반 서비스 관련 시나리오에 대한 실현 가능성을 포괄적으로 평가하여 해당 시나리오에 기반한 기술 개발에 대한 타당성과 개발 우선순위를 결정하는 평가 도구로 활용 가능할 것이다.

• 자동차안전학회지
• /
• 제11권4호
• /
• pp.39-49
• /
• 2019

Autonomous vehicle is a car which drives itself without any human interaction. SAE provides technical definitions for autonomous and international standards for test evaluation. Accordingly, automobile industry is actively researching development and evaluation of various ADAS (Advanced Driver Assistance Systems), : representative technology of autonomous technology. Recently, ADAS is in the commercialization level such as ACC, LKAS, AEB, and HDA etc. And it also has issues about safety evaluation. The purpose of HDA in ADAS is reduced the driving load on highway. It has a function which can maintain lane keeping and control distance from forward vehicle. This function is evaluated to be useful for accident prevention. Therefore, this paper proposes the safety evaluation scenario of HDA, considering the domestic highway design criteria and the situation that may arise on the actual highway. We compared and analyzed the data acquired through simulation and actual vehicle test. And verified the reliability of the proposed safety evaluation scenario. The verified result is expected safety evaluation of HDA is possible even under the bad condition, which cannot be tested.

• 대한안전경영과학회지
• /
• 제15권1호
• /
• pp.293-301
• /
• 2013

The purpose of this study is to introduce the limit of previously used six sigma quality process evaluation metrics, $Z_{st}$ and $P_{pk}$, and a solution to overcome this drawback by using a metric based on performance evaluation of Z-factor quality innovation. Case analysis on projects from national six sigma contest from 2011 to 2012 is performed and literature review on new drug development HTS (High Throughput Screening) is used to propose innovative performance evaluation metrics. This research shows that experimental study on six sigma evaluation metric, $Z_{st}$ and $P_{pk}$, have no significance difference between industrial type (Manufacturing, Semi-Public Institute, Public Institute) and CTQ type (Product Technology Type CTQ, Process Technology Type CTQ). Following discovery characterize this quality improvement as fixed target type project. As newly developed moving target type of quality innovation performance metric Z-Factor is used for evaluating experimental study, hypothetical analysis suggests that $Z_{st}$ and $P_{pk}$ share different relationship or even show reciprocal relationship. Constraints of the study are relatively small sample size of only 37 projects from past 2 years and conflict on having interview and communication with six sigma quality practitioner for qualitative experimental study. Both moving target type six sigma innovation project and fixed target type improvement project or quality circle enables efficient ways for a better understanding and quality practitioner use by applying quality innovation performance metric. Downside of fixed target type quality performance evaluation metric, $Z_{st}$ and $P_{pk}$, is presented through experimental study. In contrast, advantage of this study is that high throughput requiring product technology, process technology and quantum leap typed innovation effect is evaluated based on precision and accuracy and Z-Factor that enables relative comparison between enterprises is proposed and implemented.

• 기술혁신연구
• /
• 제16권2호
• /
• pp.125-145
• /
• 2008

The paper evaluates the Korean science, technology, and innovation policy(STIP) in terms of an individual firm. The firm is Viromed(Ltd), a new technology-based venture company in the field of biotechnology. The case is compared with the 'Hwang Project', which is known as a typical failure case in Korea. In order to evaluate the Korean STIP, we establish 6 areas, which are technological infrastructure, institutional infrastructure, human capital infrastructure, technology market, industrial base, and innovation networks. The study shows that the policy schemes relating with technological infrastructure, institutional infrastructure, human capital infrastructure, and industrial base play a positive role in the start-up, development and innovation of Viromed(Ltd). However, we can hardly find the role of Korean government in fostering the technology market, transferring the technological output to economic performance. Although the international networks with the British, American, and Japanese firms or investors were a key success factor of the growth of Viromed(Ltd), the role of the government in this policy area was not enough. As for the 'Hwang Project', we suggest that the government should consider the possibility of commercialization in choosing R&D projects and determining the size of financial aids. Since the evaluation of the Korean STIP is based on an individual firm, the results of the paper need to be confirmed by a systematic comparison with other cases or industries.

• 한국도서관정보학회지
• /
• 제33권3호
• /
• pp.133-152
• /
• 2002

본 연구의 목적은 과학기술분야 웹 정보원의 평가기준을 제시하고 평가 기준간의 관계를 규명하는 것이다. 웹 정보원 평가 카테고리로서 정보 콘텐츠, 기능성, 그리고 디자인 둥 세 가지가 제시되었다. 정보콘텐츠는 권위성, 적합성, 최신성을, 기능성은 탐색성, 네비게이션, 이용자 지원성을, 그리고 디자인은 구조 및 외양 등의 평가 요소를 포함한다. 제시된 평가 기준에 근거하여 과학기술 주제분야별로 총50개 웹 정보원을 평가한 결과, 전기·전자공학분야의 웹 정보원이 가장 우수한 것으로 나타났다. 그리고 평가 기준간의 상관관계를 분석한 결과, 정보 콘텐츠와 기능성은 음의 관계를 가진 반면에 기능성과 디자인은 비교적 높은 상관관계가 있는 것으로 나타났다.

• 산업경영시스템학회지
• /
• 제41권4호
• /
• pp.101-110
• /
• 2018

This study aims to objectively measure the efficiency of nanotechnology R&D programs by systematically evaluating the inputs and outputs of nanotechnology R&D activities and to find implications for improving the efficiency of nanotechnology R&D programs. Data on input factors such as R&D investment, R&D manpower, R&D period, and output factors such as paper, patent, and commercialization for R&D projects which started from 2008 or afterwards and ended by 2011 are gathered through National Science and Technology Knowledge Information Service, which are used for efficiency evaluation. In this study, we analyzed R&D efficiency in detailed technology units in depth. The process taken in this study is as follows. First, the basic statistics of input and output factors to compare and analyze R&D investment, R&D manpower, R&D period, paper, patent, and commercialization status by technology unit are analyzed. Next, DEA models are utilized to derive the overall efficiency, pure technology efficiency, and scale efficiency by conducting the efficiency evaluation for each technology unit, from which implications for strategic budget allocation are derived. In addition, partial efficiency evaluation is conducted to identify advantages and disadvantages of each technology unit. In turn, cluster analysis is performed to identify similar technology units, from which implications for efficiency improvement are derived.

• Journal of Pharmaceutical Investigation
• /
• 제35권3호
• /
• pp.201-205
• /
• 2005

The aim of publishing the Korean Pharmaceutical Codex is to update and set specification of essential drugs for humane health. In accordance with speedy development of new drugs and improvement of science and technology, the need of revision of drug specification through the ICH guidelines and discussions between regulatory agency and pharmaceutical industry for the quality assurance of safer and efficient drugs is getting higher. The first edition of Korean Pharmaceutical Codex was published in 1983. Now, the third revision of the Codex is prepared because of the revision of domestic and foreign Pharmacopeias, changes of drug control environment, improvement of science and technology and so on. The aim of 3th edition is to improve the quality of essential drugs through the setting of the required specifications and discussions between the regulatory agency and pharmaceutical industry.