• The Bulletin of The Korean Astronomical Society
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• v.36 no.1
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• pp.37.1-37.1
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• 2011

We report untwisting chromospheric surges of AR 10930. Hinode Solar Optical Telescope (SOT) observed AR 10930 on the west limb continuously from 11:21 UT December 18 to 09:58 UT December 19, using the Ca II H broadband filter. During the observation, rise and fall motion accompanying rotation appeared recursively. There occurred a total of 14 surges at AR 10930 over 17 hours. The average duration was 45 minutes, and the average width, and length were 8 Mm, and 39 Mm, respectively. The dynamic properties including number of turns from the rise to the fall, the axial speed and acceleration are also analyzed. We speculate that the surges occurred by recursive reconnections between the twisted prominence and large untwisted flux tube.

• Proceedings of the Korea Information Processing Society Conference
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• 2003.05a
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• pp.329-332
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• 2003

현재의 일반적인 다중에이전트 시스템 환경은 실시간이며 복잡한 환경을 제공한다. 또한 제한적인 통신 환경을 제공한다. 본 논문의 테스트 환경인 Unreal Tournament 의 환경은 일반적인 다중 에이전트 시스템 환경을 제공한다. UT 게임의 GameBots 시스템에서 실시간 다중 에이전트 협상 시스템의 구현을 위한 ACL (Agent Communication Language) 을 정의하였으며 그에 따른 다중 에이전트 협상 프로토콜을 정의하였다. 통신 환경은 단일 채널 환경이며 제한적인 통신을 제공한다. 에이전트들은 게임 시작과 동시에 인지 정보를 기반으로 맴을 작성하게 된다. UT 게임은 환경이 실시간으로 급변하기 때문에 최단의 협상 과정을 가져야 한다. 협상 시스템의 구성은 협상 과정에서 모든 것을 정하기엔 시간이 부족하기 때문에 빠른 협상 과정을 유도하기 위하여 협상과정의 일부분을 사전에 정의함으로써 협상과정을 단순화 시켰으며, 나머지는 실시간 협상과정을 통하여 동적으로 역할 분담을 하였다 협상 방법으로는 각 에이전트의 의견이 반영될 수 있는 투표 (voting) 방법을 사용하였다.

• Journal of the Korean Society of Safety
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• v.11 no.4
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• pp.29-33
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• 1996

In this study, specimens were prepared which have some defects on the buttweld joint of mild steel. In order to detect the defects of specimens, the following tests were put to : AUT and RT. When the results of the three tests were compared, the conclusion could be brought to as follows. 1) AUT outstrips RT in the abillity to detect plane defects like slags or cracks, but RT excels AUT in the ability to detect spheroidal defects like blowholes. 2) RT detects neither taper cracks nor very closed cracks, whereas AUT detects both of them. 3) AUT can detect at once plane defects like cracks and spheroidal defects like blowholes.

• Proceedings of the KIEE Conference
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• 2005.07b
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• pp.1646-1648
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• 2005

This paper proposes the Advanced Generic BOM(AGBOM) which is more flexible BOM system than existing GBOM. The existing GBOM system has the limitation of Result BOM construction and selecting options by choosing only one Variant under given Cluster. In order to overcome this limitation, AGBOM can make more various Result BOM by selecting several Variants under given Cluster. Also, this paper describes UT-AGBOM which can use to rolling stock through constructing urban transit BOM using the proposed AGBOM. The last, this paper describes the various Result BOM examples constructed from Source BOM of UT-AGBOM, such as rolling-stock maintenance BOM, individual car BOM, etc.

• Journal of the Korean Society of Industry Convergence
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• v.22 no.2
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• pp.191-199
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• 2019

In this paper, dissimilar friction welding were produced using 15 mm diameter solid bar in chrome molybedenum steel(SCM440) to stainless steel(STS316L) to investigate their mechanical properties. Consequently, optimal welding conditions were n=2000 rpm, HP=70 MPa, UP=140 MPa, HT=10 sec and UT=10 sec when the metal loss(Mo) is 8.6 mm. In addition, an acoustic emission technique was applied to evaluate the optimal friction welding condition. AE parameters including the cumulative count, amplitude and energy showed a various changes according to the friction condition. A continuous type waveforms and low frequency spectrum was presented in friction time. On the other hand, a burst type waveform and high frequency spectrum was exhibited in pressing time.

• Journal of Astronomy and Space Sciences
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• v.39 no.3
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• pp.79-86
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• 2022

Thermospheric wind observations from high to mid latitudes are compared with the newly developed Multiscale Atmosphere Geospace Environment (MAGE) model for the Nov 3-4 geomagnetic storm. The observation and simulation comparison shows a very good agreement and is better at high latitudes in general. We were able to identify a thermospheric poleward wind reduction possibly linked to a northward turning of the Interplanetary Magnetic Field (IMF) at ~22 UT on Nov 3 and an enhancement of the poleward wind to a southward turning near 10 UT on Nov 4 at high latitudes. An IMF southward turning may have led to an enhancement of equatorward winds at Boulder, Colorado near midnight. Simultaneous occurrence of aurora may be associated with an IMF By turning negative. The MAGE model wind simulations are consistent with observations in these cases. The results show the model can be a very useful tool to further study the magnetosphere and ionosphere coupling on short time scales.

• Journal of Dental Anesthesia and Pain Medicine
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• v.23 no.2
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• pp.117-119
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• 2023

Damage to the endotracheal tube (ETT) during oral and maxillofacial surgeries is a rare but serious intraoperative complication. Herein, we present a case of a partially damaged ETT that was repaired using Dermabond surgical adhesive (Ethicon, Sommerville, NJ, USA) during a Lefort osteotomy. Dermabond surgical adhesive can be a simple and viable tool to repair partially transected ETTs where ETT exchange carries a high risk of airway loss. Our case adds to one of the several techniques for managing damaged ETT in an intraoperative setting.

• 대한방사선방어학회:학술대회논문집
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• 2011.11a
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• pp.338-339
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• 2011

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.10 no.1
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• pp.1-5
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• 2010

Recently emphasizing the importance of security such as national major institutions' facilities or major industrial facilities for the maintenance of security/crime prevention due to specialization of the Green Information Technology(G-IT) and Green Ubiquitous Technology(G-UT) industry fields, The Security System Building linked high technology within the government-related organization, enterprise and army the military is urgently required. This paper is about the green USN intelligent an unmanned guard MUX system that receive the signals, from alarm device within surveillance area, with various ways of communication techniques and then transmit to local control center and remote control server trough TCP/IP network. This study enables the mutual senergy effect by realizing a total solution of an unmanned guard system and also significantly contributes to the global/domestic market expansion. That can be applied to the crime prevention/security fields in the Green Ubiquitous Environment Implemented Business(survalance-Home, Gu-City, Gu-Health, etc.), and will contribute to expand companies with international competitiveness that can provide the Green Ubiquitous Vision(Gu-Vision).

• Physical Therapy Korea
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• v.27 no.2
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• pp.93-101
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• 2020

Background: For performing various movements well, cooperation between the muscles around the scapula and shoulder has been emphasized. Taping has been widely used clinically as a helpful adjunct to other physiotherapy methods for shoulder pathology and dysfunction treatment. Previous studies have evaluated the effect of taping techniques using dynamic tapes on shoulder function and pain. However, no study investigated the electromyographic (EMG) changes in the shoulder muscles. Objects: This study aimed to investigate the effect of the upper limb offload taping technique using a dynamic tape on EMG activities of the upper trapezius (UT), lower trapezius, serratus anterior (SA), and middle deltoid (MD) muscles during scaption plane elevation. Methods: A total of 26 healthy subjects (19.85 ± 6.40 years, male = 20) volunteered to participate in this study. The subjects were instructed to perform scaption elevation with and without dynamic taping on the shoulder. Shoulder elevation strength tests were performed at 100%, 75%, 50%, and 25%, for the maximal isometric contraction force. Results: There were statistically significant interaction effects between the taping application and shoulder scaption elevation force in EMG activities in the UT (p < 0.05) and MD (p < 0.05). EMG activities in the UT showed significant increases in 50%RVC (reference voluntary contraction, p < 0.05) and 25%RVC (p < 0.01). Furthermore, the EMG activity of the SA significantly increased in 50%RVC (p < 0.01) and 25%RVC (p < 0.01) after dynamic taping. For the MD, the EMG activity level significantly decreased in 100%RVC (p < 0.05). Conclusion: These results indicated that upper limb offload dynamic taping application affects the muscle activities of some shoulder muscles depending on different scaption elevation strength levels. Therefore, we suggest that the upper limb offload dynamic taping can be applied to the shoulders when patients need middle deltoid inhibition or upper trapezius facilitation, such as patients with shoulder impingement syndrome.