• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2005.05a
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• pp.378-384
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• 2005

This paper presents the prospects of today's situation of Korea Electric Power Industry and future's development direction at the sudden chin international environment Several paradigm,-Deregulated electric market Energy shortage, Green house effect due to $CO_2$, TBT(Technical Barrier to Trade), Digital society-will facilitate the glove to develope new technology based Power Industry. With respect to this change, Korea Power Industry needs to find new technology solutions for the smarter operation, higher efficiency and lower carbon consuming power system based on mid-long term plan.

• Environmental Analysis Health and Toxicology
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• v.15 no.4
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• pp.115-122
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• 2000

Biocides, or non-agricultural pesticides, are a broad class of chemical. They are including biological agents used to disinfect/sanitize, pesticides for non-agricultural use, wood preservatives, antifoulants, etc. Since the early 1980s, many adverse effects of biocides to human health and ecosystem have been found in the world. Especially, antifouling biocide like TBT caused serious toxic effects on the marine organisms. Therefore, OECD began to work on biocides in mid 1996 to help Member countries co-operate in the assessment and registration of these products. EU also announced the Biocidal Products Directive (BPD, 98/8/EC) in 1998 to harmonize regulatory approaches to allow EU countries to conduct evaluations of biocides more efficiently. Korea just start to consider of biocides regulation. Some biocides products are regulated, but not all the biocides which are using in Korea. Therefore, we need to make a appropriate regulation for the all biocides categories. In addition, there are necessary to develop risk assessment tools, to survey the use pattern and amount, to research on the ecosystem contamination by the biocides .

• Proceedings of the KIEE Conference
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• 2005.07a
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• pp.3-5
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• 2005

With the paradigm changes of electric power industry, such as deregulation, CO2 Trade, TBT so on, new requirements of power market force to develope fusion power technology. Korea power industry, which is much dependent on international trade, needs to build stretegic infrastructure to meet the energy shortage and digital society era. This Paper suggests the mid-long term target to build power industry infrastructure to adapt the new paradigm of power world.

• Structural Engineering and Mechanics
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• v.65 no.1
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• pp.9-17
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• 2018

This study concerns about calculating exact natural frequencies of frames using a single variable shear deformation theory (SVSDT) which considers the parabolic shear stress distribution across the cross section. Free vibration analyses are performed for multi-bay, multi-storey and multi-bay multi-storey type frame structures. Dynamic stiffness formulations are derived and used to obtain first five natural frequencies of frames. Different beam and column cross sections are considered to reveal their effects on free vibration analysis. The calculated natural frequencies are tabulated with the results obtained using Euler-Bernoulli Beam Theory (EBT) and Timoshenko Beam Theory (TBT). Moreover, the effects of inner and outer columns on natural frequencies are compared for multi-bay frames. Several mode shapes are plotted.

• Environmental Sciences Bulletin of The Korean Environmental Sciences Society
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• v.10 no.S_4
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• pp.173-179
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• 2001

The chemical behavior and properties of the redox state of environmental pollutants was investigated using electrochemical methods. The purpose was to measure the variations in the redox reaction of differential pulse polarograms and cyclic voltammograms. The results observed the influences on redox potential and current of various factors including concentration, temperature, salt, and pH. These were established factors as the effect of the redox reaction. It can be clearly recognized that the electrode reaction are from reversible to irreversible processes. Also, it was mixing with reaction current controlled.

• The Transactions of The Korean Institute of Electrical Engineers
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• v.61 no.6
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• pp.905-909
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• 2012

Recent WTO/TBT agreement was adopted by the IEC domestic. For this reason, low voltage electrical equipment was many Confusion arises. Low voltage circuit was also one of these. The case of low voltage circuit, existing domestic circuit breakers and circuit breakers IEC curve differs from the behavior of each other. If low voltage circuit breaker wrong facility, circuit breaker malfunction may occur due to the large property damage. In this paper, to solve these problems domestic circuit breakers and circuit breaker operation IEC curves were analyzed. And, through experiments suggested compatible breaker way.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2008.05a
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• pp.273-276
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• 2008

정보화 사회의 급격한 변화로 첨단 기기들은 우리의 생활에 없어서는 안 될 존재가 되었지만 이는 각종 노이즈 및 서지에 노출되어 있다. 또한 기상이변으로 낙뢰에 대한 피해가 점점 증가하고 있어 효율성이 높은 대책이 요구된다. 따라서 KS 9609는 단순 보호각에 의한 건축물 보호로 폐지되고 WTO의 TBT협약에 의한 기술 부합화 차원에서 KS C IEC 61024로 제정되었다. 그리고 미흡한 부분을 보완하고 강화시킨 62305라는 새로운 피뢰설비 규격을 받아들였다. 그러나 이것 역시 실제 적용시 여러가지 문제점이 드러났다. 본 논문에서는 KS C IEC 62305의 문제점을 파악하고 이를 해결하기 위한 방안에 대하여 설명하고자 한다.

• Textile Coloration and Finishing
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• v.15 no.5
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• pp.340-347
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• 2003

Present situation of Korean textile products regarding European eco-label criteria was assessed by analyzing harmful substances including pH, PCP & TeCP, formaldehyde, heavy metals, cleavable arylamines, allergenic dyes, pesticides, organic carriers, TBT as well as color fastness as the minimum quality requirement. Fabric specimens were submitted from six typical textile companies for product eco-testing. In six product groups selected, arylamines, allergenic dyes, halogenated organic carriers and color fastness were found to be parameters that failed to meet the criteria. Source elucidation of harmful substances were presented with their instrumental analysis results.

• Proceedings of the Safety Management and Science Conference
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• 2013.04a
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• pp.445-456
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• 2013

According to Department of labor guideline "2012-104 (2012.9.26.)" This study is to suggest the basic information and the improvement for the application of risk assessment on a construction site by group interview & survey of construction worker who is the practice of the subject and then numerical analysis about awareness and action plan of Safety and health. The result of group interview and survey of construction worker, most of construction worker feel the danger during the work. Then construction worker analysis results that risk assessment helps to change & raise awareness of safety and reduce an industrial disaster. Easy Safety management activity such as TBM & safety education active will be necessary for safe worksite and then I suggest the TBT(tool box talk) active which combines TBM & safety education.

• Proceedings of the KSR Conference
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• 2008.06a
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• pp.470-480
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• 2008

After 1th line was built in 1974, the history of subway in Korea has been expended to 9th line which is under construction. It is time to prepare nation wide subway grounding system urgently according to the domestic electric standard that aligns to world wide standard by WTO/TBT treat (1995). Newly added grounding system to the fundamentally different system caused many problems. PSD(platform screen door) and other newly added equipment are also need grounding system. By the electrical code(established by Korea Electric Association), low voltage equipment(including grounding system) under 1,000V AC are in the process of change into IEC 60374. IEC 60364 standard will be added to the electrical code(established by Korea Electric Association) in 2007 and amended and after 3-5 years later, it will become a complete IEC 60364. So the purpose of this study is to compare the domestic rail road grounding system and suggest the standardized grounding system for the newly built subway.