• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2005년도 International Meeting on Information Displayvol.I
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• pp.221-223
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• 2005

To make real 3D vision available, we have established a volumetric 3D display system that based on rotating LED matrix. The paper introduced a method to correct the problem that pixels are not symmetrical but circumferential in space, which causes the resolution of the edge area much lower than that of the central area.

• 한국응용곤충학회지
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• 제45권2호
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• pp.101-105
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• 2006

밤나방과에 Hadennia obliqua (Wileman), Zanclognatha lui Han and Park, Premusia intrahens Walker, and Cucullia hostiiis Broursin 등 4종이 한국에서 처음으로 보고 된다. 이들 미기록 4종에 대해 성충의 형태적 특징과 암수생식기를 간략히 기술하고 도해한다.

• 한국응용곤충학회지
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• 제46권3호
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• pp.331-333
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• 2007

밤나방과에 Mythimna legraini (Plante, 1992)와 M. laxa Hreblay & Yoshimatsu, 1996 2종이 중국에서 처음으로 보고된다. 이 미기록 2종에 대해 성충의 외부 형태적 특정과 암수생식기를 간략한 기술과 함께 도해하였다.

• Archives of Pharmacal Research
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• 제28권8호
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• pp.889-891
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• 2005

Two ergosterins and two triterpenoids were isolated from the dried fruit bodies of Ascomyce Bulgaria inquinans. By means of chemical (hydrolysis) and spectroscopic methods (NMR, EIMS), their structures were established as betuinic acid (1), cerevisterol (2), (24R)ergosta-7, $22E­diene-3\beta,\;5\alpha,\;6\beta-triol-3-O-palmitate$ (3) and ursolic acid (4). Compound 3 is a new compound.

• 한국응용곤충학회지
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• 제44권3호
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• pp.165-168
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• 2005

밤나방과에 속하는 Eupsilia boursini Sugi, Valeria tricristata Draudt, Othosia satoi Sugi 등 3종이 한국에서 처음으로 보고된다. 새로이 밝혀진 미기록 3종에 대해 성충의 외부형태적 특징과 암수생식기를 간략한 기술과 함께 도해하였다.

• 한국응용곤충학회지
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• 제50권4호
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• pp.301-306
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• 2011

Hypena 속 2종 H. nigrobasalis (Herz, 1904)와 H. conspersalis Staudinger, 1888, 중국에서는 처음으로 보고된다. 성충의 외부형태특징에 대해 간략하게 재기재하고 이들의 암수생식기의 도해도 및 분포정보를 제시한다.

• Journal of Communications and Networks
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• 제9권3호
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• pp.236-246
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• 2007

This paper investigates the performance of the transmission control protocol (TCP) transport protocol over IEEE 802.11 infrastructure based wireless networks. A wireless link is generally characterized by high transmission errors, random interference and a varying latency. The erratic packet losses usually lead to a curbing of the flow of segments on the TCP connection and thus limit TCP's performance. This paper examines the impact of the lossy nature of IEEE 802.11 wireless networks on the TCP performance and proposes a scheme to improve the performance of TCP over wireless links. A negative acknowledgment scheme, selective negative acknowledgment (SNACK), is applied on TCP over wireless networks and a series of ns-2 simulations are performed to compare its performance against that of other TCP schemes. The simulation results confirm that SNACK and its proposed enhancement SNACK-S, which incorporates a bandwidth estimation model at the sender, outperform conventional TCP implementations in 802.11 wireless networks.

• Bulletin of the Korean Chemical Society
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• 제21권4호
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• pp.434-440
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• 2000

We present the results of computer simulation for the steady shear flows of rodlike molecules using nonequi-librium molecular dynamics simulation (NEMD) method. The model particle is a rigid rod composed of lin-early connected 6-sites and the Lennard-Jones 12-6 potential governs interactions between sites in different molecules. The system of rodlike molecules exhibits the change of orientational structure, that is, isotropic-nematic transition at high shear rates. We elucidate the nature of the ordered system developed from an isotro-pic phase by steady shear through an analysis of various quantities: orientational order parameters, orientational pair correlation functions, orientational distribution function, and snapshots of configurations. The effects of temperature and density on the shear rate dependence of orientational structure are described.

• Geomechanics and Engineering
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• 제16권6호
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• pp.599-608
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• 2018

This study investigates the feasibility of adopting the results of the UC (unconfined compression) test to assess the total cohesion of the unsaturated soil. A series of laboratory tests were conducted on samples of unsaturated lateritic soils of northern Taiwan. Specifically, the unconfined compression test was combined with the pressure plate test to obtain the unconfined compression strength and its matric suction of the samples. Soil samples were first compacted at designated water content and then subjected to the wetting process for saturation and the subsequent drying process to its target suction using the apparatus developed by the authors. The correlations among the matric suction, the unconfined compression strength and the total cohesion were studied. As a result, a simplified method to estimate the total cohesion using the unconfined compressive strength is suggested. The calculated results compare reasonably with the unsaturated triaxial test results. Current results show good performance; however, further study is warranted.

• The Korean Journal of Physiology and Pharmacology
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• 제23권1호
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• pp.89-89
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• 2019