• 정보교육학회논문지
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• 제11권4호
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• pp.433-445
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• 2007

정보사회로의 진입과 함께 정보격차는 사회 불평등을 초래하는 새로운 요소로 등장하였다. 특히 학교에서 ICT 활용교육, e-러닝, u-러닝이 점차 확대됨에 따라 학생층에서 나타나는 정보격차는 교육 기회의 불평등으로까지 이어질 우려를 낳고 있다. 이에 따라 학교 구성원들의 정보격차 실태에 대한 관심이 높아지고 있다. 본 연구에서는 학생 및 교사의 정보화 수준과 정보격차 현황을 파악하기 위하여, 경남도내 초중등 학생과 교사를 대상으로 설문조사를 실시하였다. 정보화 수준의 측정은 3개 하위 지수(접근, 역량, 활용)에 대한 가중 평균으로 계산하였다. 조사결과 학생과 교사 집단 모두 역량지수에서 가장 큰 격차를 보였다. 또한 역량지수와 활용지수와의 상관관계를 분석한 결과 두 집단 모두 정적상관을 보여 정보 역량의 차이가 정보격차를 이해하는데 중요한 요인임을 알 수 있었다.

• 디지털융복합연구
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• 제6권4호
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• pp.137-145
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• 2008

Embedded industry has emerged as one of the important industry for u-IT based application service. Technology development related to embedded hardware and software provides the base for the development of U-IT convergence industry. This study intends to suggest a research model to investigate the influence of industry, organization, technology factors on technology performance in the embedded companies. This study adopted research variables such as global network, local network, industry intensity, and technology capability as independent variables, with technology performance as a dependent variable from the existing literatures. The purpose of this study is to analyze the influence of industrial and organizational factors on technology performance of embedded companies SCM systems, including the moderating effect of government support. 94 companies data were collected by survey. The result of this empirical study is summarized as follows. First, local network and technology capability are the important determinants to influence technology performance of embedded companies in direct effect model. Second, global network and industry intensity has more positive influence on technology performance of embedded companies through a moderating variable of government support.

• 안보군사학연구
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• 통권4호
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• pp.381-418
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• 2006

In present, advanced countries in the world are seen concentring on Military Transformation to create new military capability as there is a shift in Warfare Paradigm. Rapid development of technology enables military system, operational concept and organization innovated. As a result, Revolution in Military Affairs(RMA) that dramatically increased warfighting capability is pursued. Especially, advanced information technology constructs system of systems with abilities of battle visualization, information sharing in battlefield, long-range strike capability that are interoperable and combined. Corresponding to this, engagement methods and organizations are being progressively developed. The purpose of this thesis is overview of newly developing Warfare Paradigm and analysis of tendency of Military Transformation that advanced countries are pursuing preparation to this. Above all, specific aspects and contents of the Warfare Paradigm which emerged by information age were summarized. Subsequently, Military Transformation which provides the basic concepts and principles to the advanced countries in the world for the creation of new military capability was discussed. In conclusion, the tendency of Military Transformation by U.S.A, Japan, China, and Russia surround the Korean peninsular as the major power in military was carefully observed.

• 한국농공학회지
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• 제7권2호
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• pp.935-943
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• 1965

1. Nation wide soil surver is going of from Oct't by Unkup. According to the sever years program of national high hueld of food production campaign. 2. About eighry of new soil surveryors wee assigned to provincial office of Unkup. 3. Land capability classifieation comes from U.S.D.A method. Bur we fells most adequate land classification should be studied and set uo of the real Korean Natural situation. 4. This theory has been studied by the Unkup soil survey staffs.

• 한국원자력학회:학술대회논문집
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• 한국원자력학회 2003년도 추계학술발표대회 요약집
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• pp.179-179
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• 2003

• 한국방사성폐기물학회:학술대회논문집
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• 한국방사성폐기물학회 2016년도 추계학술논문요약집
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• pp.179-180
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• 2016

• Nuclear Engineering and Technology
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• 제54권11호
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• pp.4272-4279
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• 2022

In this study, a cross section stochastic sampling (S.S.) capability is implemented into both the McCARD continuous energy Monte Carlo code and MIG multiple-correlated data sampling code. The ENDF/B-VII.1 covariance data based 30 group cross section sets and the SCALE6 covariance data based 44 group cross section sets are sampled by the MIG code. Through various uncertainty quantification (UQ) benchmark calculations, the McCARD/MIG results are verified to be consistent with the McCARD stand-alone sensitivity/uncertainty (S/U) results and the XSUSA S.S. results. UQ analyses for Three Mile Island Unit 1, Peach Bottom Unit 2, and Kozloduy-6 fuel pin problems are conducted to provide the uncertainties of k_eff and microscopic and macroscopic cross sections by the McCARD/MIG code system. Moreover, the SNU S/U formulations for uncertainty propagation in a MC depletion analysis are validated through a comparison with the McCARD/MIG S.S. results for the UAM Exercise I-1b burnup benchmark. It is therefore concluded that the SNU formulation based on the S/U method has the capability to accurately estimate the uncertainty propagation in a MC depletion analysis.

• Structural Monitoring and Maintenance
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• 제10권2호
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• pp.133-154
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• 2023

Obscured structural members are mostly under-evaluated during condition assessment due to lack of visual inspection capability. Insufficient information about the integrity of these structural members poses a significant risk for public safety. Time domain reflectometry (TDR) is a novel approach in structural health monitoring (SHM). Ordinary coaxial cables "as is" without a major modification are not suitable for SHM with TDR. The objective of this study is to propose a practical and cost-effective modification approach to commercially available coaxial cables in order to use them as a "cable sensor" for damage detection with the TDR equipment for obscured structural members. The experimental validation and assessment of the proposed modification approach was achieved by conducting 3-point bending tests of the model piles as a representative obscured structural member. It can be noted that the RG59/U-6 and RG6/U-4 cable sensors expose higher strain sensitivity in comparison with non-modified "as is" versions of the cables used. As a result, the cable sensors have the capability of sensing both the presence and the location of a structural damage with a maximum aberration of 3 cm. Furthermore, the crack development can be monitored by the RG59/U-6 cable sensor with a simple calibration.

• 한국전자파학회논문지
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• 제19권3호
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• pp.304-310
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• 2008

이동 통신용 안테나로 PEC(Perfect Electric Conductor) 접지면을 갖는 U-slotted 패치 안테나가 널리 이용되고 있으나, 이동 통신 능력을 확대하기 위하여 대역폭의 개선이 요구되어 왔다. 본 논문에서는 대역폭을 확대하기 위하여 EBG(Electromagnetic Band-Gap) 접지면을 갖는 U-slotted 패치 안테나를 제안하고, 그 복사 특성을 고찰하였다. 본 논문에서 제안한 EBG 접지면을 갖는 U-slotted 패치 안테나의 대역폭이 개선됨을 보이기 위하여 EBG와 PEC 접지면을 갖는 두 가지 형태의 U-slotted 패치 안테나를 설계 제작하고 복사 특성을 측정하였다. 측정결과, EBG 접지면을 갖는 U-slotted 패치 안테나가 PEC 접지면을 갖는 안테나보다 대역폭이 넓은 것으로 확인되었다.

• 한국경영과학회지
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• 제24권3호
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• pp.27-37
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• 1999

In just-in-time production systems, U-shaped production lines rather than traditional straight lines are often adopted since they have some advantages. The advantages of U-lines over straight lines are that the workstations required can be reduced and the necessary number of workers can be easily adjusted when the demand rates are changed. In this paper, we present a new heuristic based on genetic algorithm to improve the workload smoothness in the U-line. In the proposed algorithm, a new genetic representation is developed which is specific to the problem being solved. To enhance the capability of searching good solutions, genetic operators are designed by using the problem-specific information and heuristics. Extensive experiments are carried out on well-known test-bed problems in the literature to verify the performance of our algorithm. The computational results show that our algorithm is a promising alternative to existing heuristics.