• Title/Summary/Keyword: development tool

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Development of the new structure of transflective LCD

  • Lee, Dong-Hoon;Chung, Jae-Young;Park, Gui-Bok;Chung, In-Jae
    • 한국정보디스플레이학회:학술대회논문집
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    • 2000.01a
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    • pp.203-204
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    • 2000
  • We have developed 14.1" XGA transflective panel for both transmissive mode and reflective mode. We designed new panel structure, optimized optical films and adopted pixel with high aperture and high transmittance color filter. This can be applied for mobile tool and sub-note without regard to environment.

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Development of a Precision Friction Tester (미세마찰실험장치의 개발)

  • 김충현;안효석
    • Proceedings of the Korean Society of Machine Tool Engineers Conference
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    • 2002.10a
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    • pp.64-68
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    • 2002
  • It is an object of this research to develop a fine friction tester capable of analyzing a friction characteristics of a small size specimens in a load range of 0.03 ∼ 2.0 N. According to the test results using the developed precision friction tester, it is expected to get the experimental data with fine resolution and high reliability.

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A Development of Quantitative Risk Analysis Tool for System Unit (시스템 단위의 정량적 위험분석 도구 개발)

  • 박현우;방영환;이강수
    • Proceedings of the Korean Information Science Society Conference
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    • 2003.10a
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    • pp.871-873
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    • 2003
  • 정보시스템의 위험을 관리하기 위해서는 위험을 식별 및 측정하는 위험분석이 선행되어야 한다 본 논문에서는 위험수준 평가, 보안대책에 의한 위험감소 및 잔여위험 분석이 가능한 정량적 위험분석 방법을 제안하며, 이를 적용한 위험분석 도구를 설계 및 구현하여 보인다.

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Regulatory Development of Environmental Impact Assessment in Korea (한국 환경 영향평가제도의 변천)

  • Chang, Chun-Ki;Lee, Jae-Woon;Kwon, Myeong-Hee;Jeong, Dong-Hwan
    • Journal of Environmental Impact Assessment
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    • v.2 no.2
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    • pp.95-103
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    • 1993
  • EIA has been introduced as a tool for environment protection into promulgation of the Environment Preservation Act in 1977, which replaced the Pollution Control Act in Korea. EIA system has been improved with the enlargement of project type, public participation, guideline improvement, and regulatory development. Recently, Environmental Impact Assessment(EIA) Act will have an important role for sustainable development. This article deals with regulatory development, implementation order, EIA project type, and EIS preparation guidelines by Act promulgated and amended, also it explains comparison analysis of Environmental Policy Act and Environment Impact Assessment Act Major results are summarized in the table.

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Development of Substation Automation System based on IEC 61850 (IEC 61850 기반의 변전소자동화 시스템 개발)

  • Lee, You-Jin;Kim, Yong-Hak;Shim, Eung-Bo;Han, Jeong-Yeol;Lee, Jong-Hwen
    • Proceedings of the KIEE Conference
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    • 2011.07a
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    • pp.716-717
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    • 2011
  • This paper presents the overview of development of substation automation system. The prototypes of SA system are developed in first phase, and being enhanced the performance in second phase. In this research, the project was classified into three projects which are the development of intelligent electronic devices, the development of operation system and communication network in substation, and the development of technology to verify the compatibility of IEC 61850. As a result of this research, the domestic-made SA system are operated and tested for the performance in 154kV substation and/or test-bed in KEPCO PT Center.

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In Vitro Fertilization and Development of Bovine Oocytes (우 난포란의 체외수정과 발육)

  • 김정익
    • Korean Journal of Animal Reproduction
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    • v.13 no.2
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    • pp.98-104
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    • 1989
  • Successful techniques of in vitro fertilization(IVF) are valuable for studying the process of fertilization and for developing economical procedures for gene and nuclear transfer in farm animals. To date, bovine IVF system has been developed with oocytes in vitro or vitro, but the resulting zygotes exhibit limited embryonic development after in vitro culture. Even though in vitro matured oocytes achieved high fertilization and cleavage rates, these embryos appear extremly low rate of pregnancies when transferred to synchronized recipients. Development of early bovine embryos in vitro is generally arrested at the 8-to 16-cell stage. However, recent use of somatic cells such as trophoblastic vesicle, granulosa and oviduct epithelial cell for co-culture with early bovine embryos has proven effective for development of embryos, matured and fertilized in vitro, past the in vitro cell blocks. These factors clearly indicate the value of the co-culture system in promoting development of bovine oocytes matured and fertilized in vitro to morula or blastocyst stage in vitro. In addition, co-culture system may beome a tool for evaluation of viability of ova that have been manipulated by procedures such as splitting, microinjection and nuclear transfer.

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Genetically Engineered Mouse Models for Drug Development and Preclinical Trials

  • Lee, Ho
    • Biomolecules & Therapeutics
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    • v.22 no.4
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    • pp.267-274
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    • 2014
  • Drug development and preclinical trials are challenging processes and more than 80% to 90% of drug candidates fail to gain approval from the United States Food and Drug Administration. Predictive and efficient tools are required to discover high quality targets and increase the probability of success in the process of new drug development. One such solution to the challenges faced in the development of new drugs and combination therapies is the use of low-cost and experimentally manageable in vivo animal models. Since the 1980's, scientists have been able to genetically modify the mouse genome by removing or replacing a specific gene, which has improved the identification and validation of target genes of interest. Now genetically engineered mouse models (GEMMs) are widely used and have proved to be a powerful tool in drug discovery processes. This review particularly covers recent fascinating technologies for drug discovery and preclinical trials, targeted transgenesis and RNAi mouse, including application and combination of inducible system. Improvements in technologies and the development of new GEMMs are expected to guide future applications of these models to drug discovery and preclinical trials.

Numerical Simulation of Flow and Dross Particle Transfer in a 55% Al-Zn Pot

  • Kim, Hwang Suk;Kim, Jong Gi;Yoon, Seung Chae;Im, Hee Joong;Moon, Man Been
    • Corrosion Science and Technology
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    • v.11 no.3
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    • pp.71-76
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    • 2012
  • Computational fluid dynamics (CFD) is nowadays a powerful and reliable tool for simulating different flow processes and temperature. CFD is used to analyze the various pot geometries and operative variables in 55% Al-Zn pot of CGL. In this research, different strip velocities were assumed and then shown the flow pattern in the pot that was similar in the different strip velocities. Temperature distribution in the pot depended on inductors and inlet strip temperature at the steady condition. Generation of dross particles and transport models were considered to describe dross particles evolution inside the pot. In order to observe dross influence by scrap location, dross particles were generated upon the sink roll. Floating time of dross particles is different by scraper locations above the sink roll.