• Proceedings of the Acoustical Society of Korea Conference
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• autumn
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• pp.387-390
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• 1999

This study Is on the experimental explanation of Intonation of news sentences with focus on the Korean noun phrase, pronounced by announcers. For this, with a basic form as $'{\_}case particle\;+\;{\_}adnominal ending\;+\;Noun'$ which is a common structure in these sentences, we classified NPs according to the added constituents and examined their intonation. And with examining the connection or the breaking of intonation patterns, we described the relation between neighbouring words which build 'a rhythmic unit'.

• Proceedings of the Korean Institute of Communication Sciences Conference
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• 1991.10a
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• pp.179-182
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• 1991

In this paper, we survey traffic control issues for the B-ISDN based on the ATM. We first investigate traffic descriptors to represent the characteristics of various ATM traffics in a standardized form. Also, we examine key issues related to the connection admission control, usage parameter control, network parameter control, priority control, and congestion control.

• Proceedings of the Korean Vacuum Society Conference
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• 2010.02a
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• pp.318-318
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• 2010

We present the effect of interlayers of polymer tandem solar cells on their photovoltaic performance. P-type and n-type interlayers are essential for the series-connection of the subcells and enable to form the tandem cell architecture by the solution processing. In this study, we use PEDOT:PSS, nanocrystalline $TiO_2$, and blends of semiconducting polymers and fullerene derivatives as a hole transporting layer, electron transporting layer, and photoactive layers, respectively. We show that photovoltaic performances of polymer tandem solar cells depending on various PEDOT:PSS layers with the different electric conductivity and the various $TiO_2$ layer thickness.

• Proceedings of the Korean Institute of Surface Engineering Conference
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• 2007.04a
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• pp.19-19
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• 2007

Recently, we have developed p-i-n hydrogenated amorphous silicon (a-Si:H) single junction (SJ) thin film solar cells with RF (13,56MHz) plasma enhanced chemical vapor deposition (PECVD) systems, and also successfully fabricated the mini-modules (>300$cm^2$), using laser scribing technique to form an integrated series connection, The efficiency of a mini-module was 7.4% (Area=305$cm^2$, $I_{SC}$=0.25A, $V_{OC}$=14.74V, FF=62%).

• Journal of the Korean Mathematical Society
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• v.33 no.3
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• pp.625-639
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• 1996

A convex $RP^n$-structure on a smooth anifold M is a representation of M as a quotient of a convex domain $\Omega \subset RP^n$ by a discrete group $\Gamma$ of collineations of $RP^n$ acting properly on $\Omega$. When M is a closed surface of genus g > 1, then the equivalence classes of such structures form a moduli space $B(M)$ homeomorphic to an open cell of dimension 16(g-1) (Goldman [2]). This cell contains the Teichmuller space $T(M)$ of M and it is of interest to know what of the rich geometric structure extends to $B(M)$. In [3], a symplectic structure on $B(M)$ is defined, which extends the symplectic structure on $T(M)$ defined by the Weil-Petersson Kahler form.

• Proceedings of the KIEE Conference
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• 1989.07a
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• pp.552-556
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• 1989

The line equations can be expressed by a set of nonhomogeneous differential equation where forcing terms of these equations have been adopted. Equivalent-circuit representations of this paper are derived from solutions of the equations. The contribution of the external wave to the line is expressed in terms of ideal sources in the form of a cascade connection to the line. These representations art conveniently applicable to the various types of transmission lines because these Lines can often be written in the form of a chain matrix.

• Journal of the Korean Home Economics Association
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• v.32 no.5
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• pp.183-200
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• 1994

The purpose of this study is to present the enlargement of the area of the expression. Thish process takes steps as follows : 1)To inquiry the expressed examples in modern fashion through plasticizing the geometric cubic. 2) Through this process to sruvey the potential of the development inherent in fashion design possibility. 3) At the same time to establish the status of fashion as a part of the Plastic Art. This study is to re-illuminate the plasticity expressed in modern fashion. The result of this study testified that in the relation between fashion and the human body the plastic characteristics of geometric cubic enlarged the special three-dimension effect and in the connection of form and from there is a potential possibility of the way of organization in discovering and establishing the world of the new form through the temperate organization.

• Proceedings of the Korean Institute of Interior Design Conference
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• 1999.04a
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• pp.3-6
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• 1999

The purpose of this study is to analyze the characteristics of exhibition circulation through the movement pattern. It looks into the factoers under the influence with the visitor's movement. The method of analysis of investigation by following after visitors. The viewing behavioral of exhibition based on the time, speed, proportion of appreciation is classfied into three types of the profound, the general, the passing viewers. The characteristics of the viewing form of these patterns largely depend on the space elements which are the structure form. And particularly the position of exit, the width of exhibition space and the connection of exhibition space stand out the disparity of the factor of the spatial structure These three patterns bring about a lot of encounter in the exhibition space according to the difference of these routes consequently. So appropriate to the each pattern can offer visitors to more effective environment of exhibition.

• Journal of the Korean Mathematical Society
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• v.42 no.4
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• pp.621-634
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• 2005

Let$P{\rightarrow}M$ be an oriented $S^2-fiber$ bundle over a closed manifold M and let Q be its associated SO(3)-bundle, then we investigate the ring structure of the cohomology of the total space P by constructing the coupling form TA induced from an SO(3) connection A. We show that the cohomology ring of total space splits into those of the base space and the fiber space if and only if the Pontrjangin class $p_1(Q)\;{\in}\;H^4(M;\mathbb{Z})$ vanishes. We apply this result to the twistor spaces of 4-manifolds.

• Journal of Korean Association for Spatial Structures
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• v.2 no.2 s.4
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• pp.69-76
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• 2002

The basic systems of spatial structures such as shells, membranes, cable-nets and tensegrity structures have been developed to create the large spaces without column. But there are some difficulties concerning structural stability, surface formation and construction method. Tensegrity systems are flexible structures which are reticulated spatial structures composed of compressive members and cables. The rigidification of tensegrity systems is related to selfstress states which can be achieved only when geometrical and mechanical requirements are simultaneously satisfied. In this paper, the force density method allowing form-finding for tensegrity systems is presented. And various modules of unit-structures are investigated and discussed using the force density method. Also, a model of double-layered single curvature arch with quadruplex using supplementary cable is presented.