• Proceedings of the Korean Magnestics Society Conference
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• 2007.05a
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• pp.158.2-158.2
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• 2007

• Bulletin of the Korean Mathematical Society
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• v.32 no.1
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• pp.103-113
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• 1995

Let $S^{n+p}$(c) be the (n + p)-dimensional Euclidean sphere of constant curva ture c and let M be an n-dimensional compact minimal submanifold isometric ally immersed in $S^{n+p}$(c). Let $A_\xi$ be the second fundamental form of M in the direction of a normal $\xi$ and T the tensor defined by $T(\xi, \eta) = traceA_\xi A_\eta$.

• The Korean Nurse
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• v.5 no.1 s.21
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• pp.10-31
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• 1966

The advance of ''nurse'', in the ture sense of the meaning, dates back to the year 1884, when a coup detat was attempted by the progressive minority against the dominant Conservatives; and when for the first time the Western wisdom of medical science bega

• Journal of applied mathematics & informatics
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• v.4 no.1
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• pp.223-234
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• 1997

By Stochastic simulations we discuss the fitness of a mix-ture normal distribution to observations from general mixture distribu-tions using the MLE method and the EM algorithm. We calulate the probability of misclassifying objects and estimate the optimal number of mixture components with mutual information measure.

• Korean Journal of Materials Research
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• v.4 no.3
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• pp.334-338
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• 1994

This report details the microscopic aspects of grain boundary cracking in Pb-Sn eutecticduring displacement-controlled mechanical tests performed over a range of low frequency ($10^{-3}-10^{-5}$/s)and moderate strain range (0.2 - 1 %) where is the most technologically relevant to solder jointssubjected to thermal cycling. It is shown that intergranular cracking begins with the appearance ofcrack-like features (CLF's), which can be seen due in part because they are associated with grainboundary sliding, and is able to be described by certain stages of isolated crack growth. In the initialstages CLF's are not ture cracks but instead what I shall call "proto-cracks" where grain boundarysliding begins to damage the gram boundary at the surface. At some point during the initiation stagesonce proto-cracks become ture cracks, they develop into isolated cracks and the growth of isolatedcracks is eventually accomplished by coalescence, resulting in 5 stages of cracking.ing in 5 stages of cracking.

• Fire Protection Technology
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• s.18
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• pp.17-20
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• 1995

A diagnosis the concrete structure suffered a fire has an end in the view of safe investigation of structures and judgement of the re-use for the existing facilities to close examination of structural resisting forces and the extent of damages. And then, in this report, it has an object of references needed to fit management of concrete struc-ture suffered a fire, with describing epitome of conerete crack examination, displacement strain investi-gation, stregth examination, steel bar probing & carbonation test.

• Information and Communications Magazine
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• v.21 no.7
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• pp.66-82
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• 2004

3세대 이동통신 서비스를 앞둔 시점에 벌써 3세대 이후의 이동통신 시스템에 대한 관심이 고조되고 있다. ITU-R에서는 3세대 이후 new radio access 시스템을 이동 시 최대 100Mbps 서비스를 제공하고 정지 시 최대 1Gbps서비스를 제공하는 것으로 규정하고 있다. 본 논문에서는 소위 4세대 시스템이라고 하는 3세대 이후 시스템에 대한 국내외 기술 연구개발 동향을 정리하였다. 특히 유럽, 북미, 아시아에서 진행되고 있는 주요 프로젝트들을 정리하여 소개하였다. 유럽은 IST프로젝트와 WWRF, MVCE에 대하여 소개하였고 북미는 IEEE 표준과 개별 기업의 연구 현황을 간략히 소개하였다. 그리고 아시아는 일본의 mITF 및 NTT DoCoMo 연구현황, 중국의 FuTURE 프로젝트, 한국의 WiBro와 Hmm에 대하여 소개하였다.

• Information and Communications Magazine
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• v.19 no.7
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• pp.72-77
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• 2002

This paper introduces the Future Technologies for Universal Radio Environment (FUTURE), which is China's wireless communications research project oriented to beyond 3G systems. The features and basic requirements of the FUTURE project are described, and the system structure, which is based on IPv6 core network, is proposed. The key techniques for FUTURE project are also addressed.

• Communications of the Korean Mathematical Society
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• v.16 no.4
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• pp.691-701
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• 2001

We computed zero mean Gaussian of average error bounds pf Simpsons quadrature with convariances in [2]. In this paper, we compute zero mean Gaussian of average error bounds between Simpsons quadrature and composite Simpsons quadra-ture on four consecutive subintervals. The reason why we compute these on subintervals is because these results enable us to compute a posteriori error bounds on the whole interval in the later paper.

• Korean Institute of Interior Design Journal
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• no.6
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• pp.45-52
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• 1995

The presentation of the method by which the furniture and the architecture can be unified in one category, and the study and the verification on the mutual relation in the shape and the function are having been consistently made till the late twenties. The change of the social structure such as increasing the unit dwelling space with the small scale comes to need the efficiency in using space and the open dwelling space by the systematic spa-cial formation. Therefore, the understanding of the mean-ing and the characteristics of system furnitures as the design method which can meet such needs will be made here in this study. The application of the systematic consideration as the method of interior design means the formation of the firm image on the spacial environment through the mix-ture and link of the heterogeneous factors, the organic connection of each surface, the establishment of the natu-ral relation by linking the heterogeneous materials mutu-ally. and the easiness of the entire plan in the end. This study aims at analyzing and studying the typical charac-teristics by understanding the historical background and methodical principle which enabled the appearance of this kind of thought, and the adapted cases of the wood and metal material system furniture. There may be difference between the structural sub-stance and formative consideration. Transformative furni-ture which consists of the factors is the concept for the encrease of the multi purpose value by mixing the unit cabinets. One system can be separated horizontally, verti-cally, and to the drawers, and it gives us the disengage-ment from the artificial environment, since all the heights and width can be transformed as per each situa-tion of the space. The factors which can not be found in the other existing furniture are as follows. 1. disengagement from the artificial environment. 2. establishing the new productiosn trend as freed from the customers' fashion trend. 3. presenting the producing condition which leads the exact technology. 4. flexibility of the furniture which enables the reduction and enlargement in each situation.