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Linear Differential Equations on the Complex Plane
Park, Kong Rae 木浦大學校基礎科學硏究所 1983 基礎科學硏究誌 Vol.1 No.-
The purpose of this paper is to emphasize the fact that, unlike homogeneous linear differential equation on real line, the continuity of the coefficient functions ?? , k=0, 1, 2,‥‥, n-1, does not imply that dimension of ?? is n.
On Some Special Submanifolds of MEX
YOO, KI-JO 木浦大學校基礎科學硏究所 1996 基礎科學硏究誌 Vol.14 No.-
The purpose of this paper is to introduce two special submanifolds of ?? namely. hypersubmanifolds and T-submanifolds and to derive the generalized fundamental equations on the special submanifold of ??.
A Study on the Mutural Exclusion Lock in Large Multiprocessors
Oh, Byeong-Kyun 木浦大學校 基礎科學硏究所 1995 基礎科學硏究誌 Vol.13 No.-
To ensure proper mutual exclusion, a lock is often employed to determine the processor among those which compete for the critical section. Accesses to such a mutual exclusion lock may create heavy synchronization traffic and/or serious contention over the network, thereby degrading system performance considerably. In this paper, we introduce an efficient lock scheme which keeps synchronization traffic low and avoids serious hot-spot contention. This is made possible by construction a ring of the processors waiting for the critical section and by dispersing accesses to the lock.
On the curvature tensor in g-MEX
Yoo, Ki Jo 木浦大學校 基礎科學硏究所 1995 基礎科學硏究誌 Vol.13 No.-
An n-dimensional *g-ME-manifold ?? is a generalized Riemannian space connected by the ME-connection which is both(1.11) and Einstein. The purpose of the present paper is to study the curvature tensor in ??. In this paper, we show that the ME-connection uniquely exists and the properties of the curvature tensor defined by the ME-connection in ??.
오형식,장주환 木浦大學校 基礎科學硏究所 1994 基礎科學硏究誌 Vol.12 No.-
비스(트리메틸실릴메틸)디클로로실란은 구리와 카드뮴을 각각 촉매와 조촉미로 사용하어 320 ℃에서 클로로메틸트리메틸실란을 금속규소와 직접반응에 제조하였다. 비스(트리메틸실릴메틸)디클로로실란을 메틸알콜과 반응시켜 비스(트리메틸실릴메틸)클로로메톡시실란을 합성하였고, 이를 비닐 그리냐르시약과 반응시켜 비스(트리메틸실릴메틸)메톡시비닐실란을 합성하였다. Bis(trimethylsilylmethyl)dichlorosilane has been prepared in 71% yield by the direct synthesis of α-chloromethylsilanes with metallic silicon in the presence of copper catalyst and cadmium cocatalyst using a spiral band agitator at the carefully controled temperature at 320℃ and we prepared the bis(trimethylsilymethyl)methoxyvinylsilane prepared by Grignard reaction in 63% yield.
김창대,정해문,신동호 木浦大學校基礎科學硏究所 1996 基礎科學硏究誌 Vol.14 No.-
Single crystals of ?? over the range 0.0≤χ≤0.46 were grown by the modified chemical transport reaction technique. The structural and optical properties of the ?? single crystals were investigated at room temperature from X-ray powder diffraction and optical absorption measurements. It has been found that the ?? has a wurtzite structure over the investigated composition range. The lattice constants of a and c vary linearly with composition. The band gap varies linearly with composition, which is represented by a linear relationship Eg(χ)=1.742+1.813 χ.
수용성 미셀용액에 가용화된 Acetanilide, p-diacetylbenzene 및 tetrabromo-p-quinone의 미세환경의 성질
高正秀,金信局,朴哲浩 木浦大學校 基礎科學硏究所 1994 基礎科學硏究誌 Vol.12 No.-
Solubilization of some carbonyl compounds such as acetanilide, p-diacetylbenzene and tetrabromo-p-quinone was investigated in a variety of aqueous micellar solutions by UV spectrophotometric method. The good linear relationship was obsorved between υ(n→π*)of these carbonyl compounds and solvent polarity parameter, ??, of some pure solvents. Themicroenvironmental polarity of these carbonyl compounds depended on the ionic properties of the surfactants, and decreased as cationic > anionic > nonionic.
A STUDY ON THE PARALLEL COMPUTATION MODELS
Oh,Byeong-Kyun 木浦大學校 基礎科學硏究所 1993 基礎科學硏究誌 Vol.11 No.-
In this paper we have shown that the parallel computation models are executed simultaneously. And then we have described a solution method for a given problem destined to be performed on a parallel computer. We defined more formally the various notions when analyzing parallel algorirhem.
A Study of Solubilization of Methylanthracenes
Park, Chul-Ho,Ko, Jeong-Soo,Han, Dong-Sul 木浦大學校 基礎科學硏究所 1992 基礎科學硏究誌 Vol.10 No.-
It was possible to find the CMC of surfactants by adopting the slope-intercept method. This method was applied to determine the CMC of CTAB and SDS by using 1-MA, 2-MA, and 9-MA as a probe. These probes might be more suitable for determining the CMC of an anionic surfactant SDS than a cationic surfactant CTAB. Substituted anthracenes might be better suited as a probe for determining the CMC of SDS than anthracene.
A Special Representation of the ME-Vector
Yoo, Ki-Jo 木浦大學校 基礎科學硏究所 1990 基礎科學硏究誌 Vol.8 No.-
A connection which is both Einstein and of the form (1,1) is called a ME-connection, and a generalized n- dimensional Riemannian manifold on which the differential geometric structure is imposed by g?? through a ME-connection is called an n-dimensional ME-manifold and denoted by MEX?. The purpose of the present paper is to find a special kind of representation of the ME-vector X, which holds for an even n and for the first class. And it holds in an even-dimensional ME-manifold with a certain special condition imposed on g??.