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Highly Pathogenic Avian Influenza A(H5N6) in Domestic Cats, South Korea
Lee, KyungHyun,Lee, Eun-Kyoung,Lee, HyunKyoung,Heo, Gyeong-Beom,Lee, Yu-Na,Jung, Ji-Youl,Bae, You-chan,So, ByungJae,Lee, Youn-Jeong,Choi, Eun-Jin U.S. Department of Health and Human Services * Cen 2018 Emerging Infectious Diseases Vol.24 No.12
<P>In December 2016, highly pathogenic avian influenza (HPAI) infection with systemic pathologic lesions was found in cats in South Korea. Genetic analyses indicated that the feline isolates were similar to HPAI H5N6 viruses isolated in chicken farms nearby. This finding highlights the need for monitoring of domestic mammals during HPAI outbreaks.</P>
Bovine tuberculosis in an Asian small-clawed otter (<i>Aonyx cinerea</i>) in the Republic of Korea
Lee, Hyunkyoung,Kim, Jae-Myung,Jang, Yunho,Lee, Kyunghyun,Baek, Kanghyun,Lee, Boram,Kim, Ha-Young,Lee, Myoung-Heon,Ryoo, Soyoon,Bae, You-Chan,Choi, Eun-Jin,So, ByungJae SAGE Publications 2015 Journal of veterinary diagnostic investigation Vol.27 No.5
<P>Bovine tuberculosis caused by <I>Mycobacterium bovis</I> has a wide range of hosts including cattle and humans, but its incidence in otters is very rare. Our report describes a case of bovine tuberculosis in an Asian small-clawed otter (<I>Aonyx cinerea</I>). A deceased female otter ~2–3 years of age that was raised in an aquarium was submitted to the Animal and Plant Quarantine Agency (Anyang, Republic of Korea) for autopsy in June 2013. Following gross pathological examination, many white nodules were observed in the lungs and mesentery. The nodules showed central necrosis infiltrated with lymphocytes and macrophages and surrounded by fibrous tissue. Acid-fast bacteria were detected in the necrotic foci, but no fungi were observed. Molecular analysis led to the detection of <I>M. bovis</I>, which is identified in otters in some European countries such as Spain and France.</P>
Digital Human Modeling을 이용한 보병 수송용 특수 차량의 인간공학적 개선
Kyunghyun Nam,Sungryul Park,Songil Lee,Gyouhyung Kyung,Jeongyeob Lee,Jonghyun Kim,Yongcheol Shin,Chiung Kim 대한인간공학회 2012 대한인간공학회 학술대회논문집 Vol.2012 No.11
Objective: The objective of this study is to evaluate Armored Personnel Carrier (APC) by using Digital Human Modeling (DHM) tools in order to identify ergonomic problems. Background: Ergonomic evaluation is especially important in designing tactical military vehicles, since the operator will experience significantly high cognitive and physical workloads while he/she controls the vehicle in combat situations. Although human factors standards, including MIL STD-1472, provide guidance for military vehicle design, it is not always possible to directly apply these standards to designing Korean military vehicles (e.g., due to demographic differences). In the design process, the use of DHM provides many benefits including reduced development cost and quantitative ergonomic design evaluation. This study suggests some improvements based on the ergonomic evaluations by using DHM tools and ergonomics checklists. Method: The APC was evaluated by using DHM tools (RAMSIS™ and 3D SSPP™) in terms of physical workload in ingress/egress, visibility, clearance, and reachability. For control panel evaluation, checklists based on ergonomics guidelines were used. Conclusion: The improvements in multiple aspects of APC are main results of this study and they are expected to be widely used in the development of next tactical military vehicles. Application: The results could be used in establishing military guidelines for ergonomic military vehicle design suitable for Korean soldiers. The suggested improvements would relieve APC users’ physical and cognitive workload, which results in increasing survivability in highly stressful situation.
Klebsiella pneumoniae infection secondary to bovine viral diarrhea in two prematurely born calves
Lee, Kyunghyun,Kim, Ha-Young,Choi, Eun-Jin,Lee, Kyoung-Ki,So, ByungJae,Jung, Ji-Youl The Korean Society of Veterinary Science 2020 大韓獸醫學會誌 Vol.60 No.3
This paper describes the development of neurological signs of two prematurely born calves four days after birth. The pathological examination results indicated fibrinopurulent polyserositis, including meningoencephalitis with suppurative bronchopneumonia. Bovine viral diarrhea virus subtype 2a was detected in most of the internal organs, and the bacterial colonies cultured from the samples were identified as Klebsiella (K.) pneumoniae. Molecular analysis via multilocus sequence typing identified a different K. pneumoniae isolate in each calf-type 14 in calf A and type 65 in calf B. This is the first report identifying K. pneumoniae sequence types 14 and 65 in cattle.
Lee, Seung-Hun,Lee, Kyunghyun,Kim, Kyoo-Tae,Choi, Eun-Jin,Kwak, Dongmi Elsevier 2019 Parasitology international Vol.71 No.-
<P><B>Abstract</B></P> <P>A red-necked wallaby (<I>Macropus rufogriseus</I>) in the Republic of Korea, introduced from Australia, died in 12 d after exhibiting anorexia and diarrhea. Postmortem examination revealed that the wallaby died due to coccidiosis by <I>Eimeria</I> sp. Morphologically, <I>Eimeria</I> sp. identified closely resembled <I>E. mykytowyczi</I>. The 18S rRNA sequence analysis showed that <I>Eimeria</I> sp. identified in this study has a 98.5% identity with that in Australian red kangaroo (<I>M. rufus</I>). However, owing to insufficient molecular information on marsupial-specific <I>Eimeria</I>, exact species could not be determined. Phylogenetically, <I>Eimeria</I> sp. identified in this study belonged to clade five of the marsupial group.</P> <P><B>Highlights</B></P> <P> <UL> <LI> First report on red-necked wallaby (<I>Macropus rufogriseus</I>) died due to coccidiosis in the Republic of Korea. </LI> <LI> Morphologically, <I>Eimeria</I> sp. identified closely resembled <I>E. mykytowyczi</I>. </LI> <LI> The 18S rRNA sequence analysis of <I>Eimeria</I> sp. belonged to clade five of the marsupial group. </LI> <LI> Considering the wallaby died 12 d after introduction from Australia, <I>Eimeria</I> sp. identified might not be indigenous. </LI> </UL> </P>
TDOA-/FDOA-Based Adaptive Active Target Localization Using Iterated Dual-EKF Algorithm
Lee, Kyunghyun,Oh, Jinhwan,You, Kwanho IEEE 2019 IEEE communications letters Vol.23 No.4
<P>Most geolocation methods use only the time difference of arrival for estimating the emitter’s location. In this letter, to obtain the velocity estimate values of an active target, we use the frequency difference of arrival. The iterated dual-extended Kalman filter (EKF) algorithm is used as a geolocation process for a moving emitter. In comparison with the dual-EKF algorithm, the parameter estimation filter’s update speed of the iterated dual-EKF algorithm shows a high convergence rate through the iteration process. To verify the performance of the proposed algorithm, simulation results by using the iterated dual-EKF algorithm are presented.</P>
Neural Network-Based Laser Interferometer Compensation for Seismic Signal Detection
Lee, Kyunghyun,Kwon, Hyungkwan,You, Kwanho Hindawi Limited 2018 Journal of sensors Vol.2018 No.-
<P>We propose a seismic wave detection method in the frequency domain using a heterodyne laser interferometer, which is used in ultraprecision fields as a displacement measurement device. In seismology, it is important to accurately measure seismic waves. To overcome the limited frequency range and low resolution of accelerometers and velocimeters and to enhance the precision of seismic data analysis, we use the heterodyne laser interferometer as a seismic detection apparatus. We apply the data fusion algorithm with the adaptive standard deviation ratio ( <TEX>$ \varsigma $</TEX> ) derived from the neural network to improve the laser interferometer’s measurement precision. Moreover, by using the interferometric characteristics, we analyze the seismic data in the frequency domain. To determine the location of the epicenter from the body wave propagation analysis, we apply the STA/LTA algorithm to the measurement data. The effectiveness of the proposed laser interferometric seismometer is shown through experiments to locate the precise epicenter.</P>