• The Research Journal of the Costume Culture
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• v.13 no.1
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• pp.102-120
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• 2005

Three Jang-Ue's and eleven drapery were investigated in the excavated costume in Ue-Ryeong, Gyeong-Sang-Nam-Do. Three Jang-Ue's have three different colors. the length, the width, and the wide of quilting are different as well. The outer collar of a coat is a double collar while the inturned collar is a single collar. In case of Dark blue and Pink Jang-Ue. The large section of cloth forming the body of a Korean coat is getting narrower while the reinforcing cloth strip is getting wider as the time is passing by. All the three Jang-Ue's have the different handling methods of a attached to the top border of a Korean coat, and Pink Jang-Ue doesn't have a attached to the tip border of a Korean coat. The handling method of the hemline are all different. And the handling method of the cuffs are all different. The silk is main in the woven goods, partly hemp, mixed fabrics and cotton. Especially complex gauze with supplementary wefts that were found unusually in Cho-Sun Dynasty are very import to study the complex gauze. The fond relics of the Jeon-Ui Lee family reveal various formational methods and specific characters of the excavated costume. There fore these that bring the Jang-Ue shape and the textile's feature in Gyeong-Sang-Nam-Do region, from 16th to 17th are very valuable.

• ETRI Journal
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• v.40 no.6
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• pp.736-744
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• 2018

This study considers zone-based registration (ZBR), which is adopted by most mobile cellular networks. In ZBR, a user equipment (UE) registers its location area (or zone) in a network database (DB) whenever it enters a new zone. Even though ZBR is implemented in most networks for a UE to keep only one zone (1ZR), it is also possible for a UE to keep multiple zones. Therefore, a ZBR with two zones (2ZR) is investigated, and some mathematical models for 2ZR are presented. With respect to ZBR with three zones (3ZR), several studies have been reported, but these employed computer simulations owing to the complexity of the cases, and there have been no reports on a mathematical 3ZR model to analyze its performance. In this study, we propose a new mathematical model for 3ZR for the first time, and analyze the performance of 3ZR using this model. The numerical results for various scenarios show that, as the UE frequently enters zones, the proposed 3ZR model outperforms 1ZR and 2ZR. Our results help determine the optimal number of zones that a UE keeps, and minimize the signaling cost for radio channels in mobile cellular networks.

• Journal of Trauma and Injury
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• v.29 no.4
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• pp.187-190
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• 2016

With the development of safety measures for employees who work with dangerous machinery, the frequency of amputation injuries has been decreasing with resultant decrease in replantation procedures. However, in some patients with major amputation injury, replantation is still necessary for the preservation of limb and it's function. The replantation of the upper extremity (UE) is a complex and technically demanding surgical procedure. For the successful replantation of UE, the type of injury, reconstruction sequence, ischemic time, and other combined injury of patient should be considered. We report a case of major amputation of UE by guillotine-type injury and discuss the treatment process of this patient.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.39C no.10
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• pp.937-945
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• 2014

As various services requiring high data rate are supported by introducing LTE/LTE-adv., mobile traffic increases rapidly. To cope with the continuous growth of traffic demand, small cell technology is considered as one of the most promising one. Small cell can increase system capacity by increasing the number of base stations with reduced cell radius. In this paper, we analyze the effect of cell densification with small cells in terms of SINR and average UE throughput considering cell split and the number of UE per unit area. As the cell becomes smaller, SINR degradation arises from high ICI(Inter Cell Interference) and we evaluate the effect of interference mitigation scheme in small cell environment where the proper interference mitigation technique is applied.

• Molecular & Cellular Toxicology
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• v.4 no.3
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• pp.177-182
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• 2008

Caveolin proteins are mediators of cell death or the survival of injured cells, and they are inhibitors of various signaling pathways. The expression of caveolin-, which is involved in the protein kinase A (PKA) signaling pathway, was examined in the differentiated mouse vestibular cell line UB/UE-1 after gentamicin ototoxicity. Caveolae in the vestibular hair cell of healthy guinea pigs were observed through an electron microscope. UB/UE-1 cells were cultured at 95% $CO_2$ with 5% $O_2$ at $33^{\circ}C$ for 48 hours and at 95% $CO_2$ with 5% $O_2$ at $39^{\circ}C$ for 24 hours for differentiation. Cells were treated with 1 mM gentamicin, 0.02 mM H89 (PKA inhibitor), and then incubated for 24 hours. Caveolin-1 expression was examined by western blotting and PKA activity by a $PepTag^{(R)}$ assay. Caveolae were observed in the vestibular hair cells of healthy guinea pigs by electron microscopy. Caveolin-1 was expressed spontaneously in differentiated UB/UE-1 cells and increased after gentamicin treatment. PKA was also over-activated by gentamicin treatment. Both gentamicin-induced caveolin-1 expression and PKA over-activation were inhibited by H89. These results indicate that gentamicin-induced caveolin-1 expression is mediated by the PKA signaling pathway. We conclude that caveolae/ caveolin activity, induced via a PKA signaling pathway, may be one of the mechanisms of gentamicin-induced ototoxicity.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.25 no.9
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• pp.1220-1226
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• 2021

In this paper, we propose a probabilistic handover scheme for enhancing spectral efficiency in drone-based wireless communication systems. When a moving drone base station (DBS) provides the drone-based wireless communication service to a user equipment (UE) located on the ground, our proposed handover scheme considers the distance between DBS and UE and small scale fading. In addition, our proposed handover scheme considers a handover probability to mitigate the signalling overhead that may occur when performing frequent handovers. Through simulations for drone-based wireless communication systems, we evaluate the spectral efficiency and the handover probability of our proposed handover scheme and the conventional handover scheme. The simulation results show that our proposed handover scheme can achieve higher average spectral efficiency than the conventional handover scheme which considers only the distance between DBS and UE.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.36 no.3A
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• pp.215-222
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• 2011

In this paper, we propose a power control scheme for effective serving cell selection in Relay environment of 3GPP (3rd Generation Partnership Project) LTE (Long Tenn Evolution)-Advanced system. A conventional serving cell selection scheme which does not use channel states of backhaul link has a problem that this scheme does not select serving cell supporting maximum throughput. Also, conventional proposed serving cell selection schemes that eNB or RN transmits channel states of backhaul link have problems that conventional schemes need to additional data transmission, serving cell selection process complexity is increased because UE considers channel states of backhaul link, and received signal is degraded because strong interference which is transmission signal from RN. Therefore, for solve these problems, we propose power control scheme that RN control transmission power according to received SINR (Signal to Interference plus Noise Ratio) of backhaul link. By extensive computer simulation, we verify that the power control Relay scheme is attractive and suitable for the Relay environment.

• Electronics and Telecommunications Trends
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• v.21 no.1 s.97
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• pp.94-103
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• 2006

기지국/단말 모뎀 검증 장치(MAT)는 기지국(AS) 모뎀, 단말(UE) 모뎀으로 구성되는 초고속 무선 전송 시스템(HM20) MIMO 구조 기지국/단말 모뎀의 자체 기능 검증과 기지국 모뎀과 단말 모뎀의 연동 시험시 오류 원인을 분석하기 위하여 상향 링크(UL)와 하향 링크(DL)의 송. 수신단의 정합부에 디지털 및 아날로그 정합을 이용하여 기지국모뎀과 단말 모뎀이 정상적으로 동작하는지를 시험하게 된다. 모뎀 검증 장치(MAT)는 상향 링크 신호는 단말 변조기의 송신 신호 수신과 기지국 복조기에 변조 신호를 송신, 하향 링크 신호는 기지국 변조기의 송신 신호 수신, 단말 복조기에 변조 신호를 송신하는 기능을 수행하여 상향 링크 신호와 하향 링크 신호를 시험 및 분석하는 기능을 수행한다.

• Journal of Electrochemical Science and Technology
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• v.6 no.2
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• pp.35-49
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• 2015

Advanced polymeric binders with unique functions such as improvements in the electronic conduction network, mechanical adhesion, and mechanical durability during cycling have recently gained an increasing amount of attention as a promising means of creating high-performance silicon (Si) anodes in lithium-ion batteries with high energy density levels. In this review, we describe the key challenges of Si anodes, particularly highlighting the recent progress in the area of polymeric binders for Si anodes in cells.

• Journal of Advanced Marine Engineering and Technology
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• v.28 no.3
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• pp.482-492
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• 2004

Recently. the market trend for marine diesel engine has involved the lower running speeds. larger stroke/bore ratio and higher combustion pressure. Consequently, because of the flexible engine shafting system due to the larger mass. inertia and the more elasticity, the complicated coupled torsional-axial vibrations have occurred in the operating speed range. Also, the vibrations act as an excitation on the hull-structural vibration. To predict the vibration behavior with more accuracy and reliability. many studies have proposed the several kinds of method to calculate the stiffness matrix of crankshaft. However, most of these methods have a weak point to spend much time on three dimensional modeling and meshing work for crankshaft. Therefore. in this work. the stiffness matrix for the crankthrow is calculated using the energy method (Influence Coefficient Method, ICM) with the each mass having 6 degree of freedom. Its effectiveness is verified through the comparison with the stiffness matrix obtained by using the finite element method (FEM) and measured results for actual ships propulsion system.