• 제목/요약/키워드: Technical Issue

검색결과 541건 처리시간 0.022초

상주 소방감리업무의 현실적 문제점에 대한 연구 -대전지역을 중심으로- (A Study on the Actual Problems of Field Fire Supervision System(Focus to Dajeon City))

  • 최만철;김병석
    • 대한안전경영과학회지
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    • 제13권1호
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    • pp.31-39
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    • 2011
  • In this study, supervision resides fire mission against problems associated with case studies and surveys done through the side of the field work, technical personnel, fire management, including fire code aspects classified into three kinds of items dealt with the issue. Started at the scene of the problem in terms of performance, the issue of the construction process, mainly dealt with the issue at the time of completion. Fire management side, supervisor of technical personnel, human resources management issues, contract issues, fire code level, the frequent revisions of fire regulations, supervision, processing delays of the resulting report, the problem resides with the expansion of Fire Supervision target was mentioned. Finally, the target for each hierarchical supervision, and resident supervisor of the need for supervision of work performance test was carried out by the correlation.

기업의 노동생산성 향상을 위한 분석연구 (An Analytical Study for the Labor Productivity Improvement of Enterprise)

  • 김종래
    • 산업경영시스템학회지
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    • 제4권4호
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    • pp.35-42
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    • 1981
  • This paper grasped the labor productivity actual condition by the standard of per unit working hour and production about the main products of our country's industrial the main materials and could understand the average of our country's labor productivity as compared this with the labor productivity actual condition of Japan. As the point at issue of analitical result. 1. Low a matter of thinking about productivity. 2. Have a lot of difficult problem in an industrial part. 3. Have the point at issue on technical development and accumulation. 4. Have the point at issue on management. As a countermeasure about these. 1. must convert the way of use of industrial policy. 2. must make a housing development and special serialization of a small and medium enterprise. 3. must establish an organic technical development system. 4. must grope the policy of management rationalization.

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Development of a Korean roadmap for technical issue resolution for fission product behavior during severe accidents

  • Kim, Han-Chul;Ha, Kwang Soon;Kim, Sung Joong;Seo, Miro;Kang, Sang-Ho;Lee, Doo Yong;Song, Yong-Mann;Lee, Jongseong;Im, Hee-Jung;Cho, Chang-Sok;Yeon, Jei-Won;Kim, Sung Il;Cho, Song-Won;Song, Jinho;Ryu, Yong-Ho
    • Nuclear Engineering and Technology
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    • 제49권8호
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    • pp.1575-1588
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    • 2017
  • In order to develop a domestic research roadmap for severe accidents, a special committee was established by the Korean Nuclear Society. One of the subcommittees discussed the characteristics and the relevant technical issues in the stages of fission product release and physical forms of radionuclide release and transport. The group members developed a tree to identify fission product release phenomena by tracing failures of individual defense-in-depth barriers and added possible countermeasures against failure. For each elemental issue, they searched for technical problems by examining the phenomena, accident management actions, and regulatory aspects relevant to the mitigation features for containment, including mitigation strategies against containment bypass accidents. Regulatory concerns, including the source term and the acceptance criteria for radionuclide release, were also considered. They identified further research needs regarding important technical issues based on the degree of the current knowledge level in Korea and in foreign countries, looking at the significance and urgency of issues and the expected research period required to reach an advanced level of knowledge. As a result, the group identified the 12 most important and urgent issues, most of which were expected to require mid-term and long-term research periods.

Automatic detection of icing wind turbine using deep learning method

  • Hacıefendioglu, Kemal;Basaga, Hasan Basri;Ayas, Selen;Karimi, Mohammad Tordi
    • Wind and Structures
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    • 제34권6호
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    • pp.511-523
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    • 2022
  • Detecting the icing on wind turbine blades built-in cold regions with conventional methods is always a very laborious, expensive and very difficult task. Regarding this issue, the use of smart systems has recently come to the agenda. It is quite possible to eliminate this issue by using the deep learning method, which is one of these methods. In this study, an application has been implemented that can detect icing on wind turbine blades images with visualization techniques based on deep learning using images. Pre-trained models of Resnet-50, VGG-16, VGG-19 and Inception-V3, which are well-known deep learning approaches, are used to classify objects automatically. Grad-CAM, Grad-CAM++, and Score-CAM visualization techniques were considered depending on the deep learning methods used to predict the location of icing regions on the wind turbine blades accurately. It was clearly shown that the best visualization technique for localization is Score-CAM. Finally, visualization performance analyses in various cases which are close-up and remote photos of a wind turbine, density of icing and light were carried out using Score-CAM for Resnet-50. As a result, it is understood that these methods can detect icing occurring on the wind turbine with acceptable high accuracy.

공업계열 고등학교의 발전계획 수립을 위한 학교컨설팅 모델 및 사례 분석 (School Consulting Model to Establish the Development Plan of Industrial High School and a Case Analysis)

  • 김진수
    • 대한공업교육학회지
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    • 제33권2호
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    • pp.1-25
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    • 2008
  • 이 연구에서는 공업계열 고등학교의 발전 계획 수립을 위한 학교 컨설팅의 이론을 탐색하고, 컨설팅 모델과 수행기법 모델을 제시한 후, 제시한 모델과 컨설팅 수행 기법에 의하여 수행된 C 공업고등학교의 컨설팅 사례에 대하여 분석하였다. 최근까지 수행된 학교컨설팅은 대부분이 수업 및 장학 컨설팅에 대한 것이며, 학교경영컨설팅 분야에 대한 연구는 아직 미미한 실정이다. 이 논문에서는 공업계열 고등학교에 적합한 학교 컨설팅 모델을 구안하여 착수, 진단, 실행기획, 실행, 종료의 5단계로 제시하였다. 컨설팅 모델을 적용한 C공업고등학교의 컨설팅 사례를 분석하였고, 이는 향후 공업계열 고등학교의 컨설팅 연구의 기초 자료를 제공하고자 함이다. 학교컨설팅 모델의 5단계에 의하여 C공업고등학교의 현황 분석, 설문 조사, SWOT 분석, Issue Tree, 학교 진단 평가 등을 하였다. C공업고등학교의 발전 전략을 수립하기 위하여 Issue Tree에 기초하여 '문제점 및 개선방안 표'를 작성한 후, Pay-Off Matrix를 작성하였다. 최종적으로 C공업고등학교가 단기 및 중장기적으로 해결해야 할 발전 계획을 도출할 수 있었다.

Buckling and forced oscillation of organic nanoplates taking the structural drag coefficient into account

  • Dao Minh Tien;Do Van Thom;Nguyen Thi Hai Van;Abdelouahed Tounsi;Phung Van Minh;Dao Nhu Mai
    • Computers and Concrete
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    • 제32권6호
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    • pp.553-565
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    • 2023
  • This work is the first to apply nonlocal theory and a variety of deformation plate theories to study the issue of forced vibration and buckling in organic nanoplates, where the effect of the drag parameter inside the structure has been taken into consideration. Whereas previous research on nanostructures has treated the nonlocal parameter as a fixed value, this study accounts for its effect, and finds that its value fluctuates with the thickness of each layer. This is also a new point that no works have mentioned for organic plates. On the foundation of the notion of potential movement, the equilibrium equation is derived, the buckling issue is handled using Navier's solution, and the forced oscillation problem is solved using the finite element approach. Additionally, a set of numerical examples exhibiting the forced vibration and buckling response of organic nanoplates are shown. These findings indicate that the nonlocal parameter and the drag parameter of the structure have a substantial effect on the mechanical responses of organic nanoplates.

LIPID-SOLUBLE VC DERIVATIVE ASCORBIC ACID TETRA-2-HEXYLDECANOATE (VC-IP) AS AN ANTI-AGING AGENT

  • Obayashi, K.;Ochiai, Y.;Ochiai, Y.;Masaki, H.;Kurata, Y.
    • 대한화장품학회:학술대회논문집
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    • 대한화장품학회 2003년도 IFSCC Conference Proceeding Book I
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    • pp.313-319
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    • 2003
  • It is well known that ascorbic acid (VC) is an important factor for several physiological reactions. In the skin, VC works as an anti-aging agent due to removing of oxidative stress generated by UV irradiation and stimulation of collagen synthesis. Thus, developing more effective VC derivatives is an important issue in creating anti-aging skin care products. Our study succeeded to develop a novel ascorbic acid derivative, ascorbic acid tetra-2-hexyldecanoate (VC-IP), which is a lipid-soluble pro-VC. The purpose of this study was to indicate the effects of VC-IP as pro-VC and anti-aging agent. First, it was examined whether VC-IP is converted to VC in physiological conditions. Since VC was detected from the cell extracts treated with VC-IP, it was indicated that VC-IP is a pro- VC.(omiited)

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Functional Surface Coating Technologies of Steel Industry

  • Choi, Chang-Hoon;Park, Sung-Ho;Kim, Jong-Sang
    • Corrosion Science and Technology
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    • 제9권6호
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    • pp.270-275
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    • 2010
  • Technical issues of steel industry change along with other industrial progresses. Traditionally, steel protection from corrosion environment was the major issue and galvanic metal coatings were mainly used to extend the lifetime of steel products. Nowadays, requirements for steel have become more diversified. More various surface and material properties are required from different field of applications. Naturally, functional surface coating has become one of the most studied areas in steel industry. For functional surface coating, various process technologies and coating products are investigated. In this article, recent trends of functional coating technologies and products are introduced with brief technical descriptions of representative coating products.