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이영석 ( Youngseok Lee ) 미래군사학회 2019 한국군사학논총 Vol.8 No.1
On April 13, 1592, the invasionof Japanese army into Joseon (former Korea) began the Japanese invasion of Korea (Imjinwaeran). In the beginning, Joseon soldiers were continually defeated by the Japanese army. There were many reasons for the defeat in the battle, but the biggest cause was the loss of public support from people due to the tyranny of their military commanders and public officials. As a result, King Seonjo not only fled to Uiju, but also sought asylum in the Ming Dynasty, thus the country facing the brink of ruin. Under the situation, the former public officials and prominent scholars started to recruit the members of righteous army. Patriotic people, regardless of their classes, volunteered to fight their lives only in order to save the country from the Japanese invasion. Lee Jeongam also raised an army under the same situation, and with him, some 1,400 volunteer soldiers and people were mixed up to fight 5,000 Japanese soldiers led by Kuroda Nagamasa, which was one of the most elite troops in the Japanese military. The military implications which resulted in the victory under the commader of the righteous army, Lee Jeongam at the Yeonanseong battle are as follows. First, it was the first fortress defending battle which was won by Joseon for the first time. Second, soldiers and general people united to fight the Japanese soldiers. Third, the righteous army of Joseon had a thorough combat preparation and effective combat action. Fourth, they had the mentality of civil defense and the spirit of patriotism of defending their homecountry to the end of their life. Fifth. they could sustain the ability of continuing the battles by securing the Yeonbaek rice field areas (breadbasket area). Sixth, the line of border was established which linked between three provinces: Chungcheong-do, Jeolla-do and Gyeongsang-do, and the King's temporary quarters (Haengjaeso) located in Uiju (King Seonjo). What’s disappointing is that since the critical locations in this study are located in North Korea, the study has been lacking research and attention. So, the continuous and systematic research is required in the future.
Lee, Youngseok,Lee, Yong,Lee, Jaejung,Bang, Sunhoe,Hyun, Seogang,Kang, Jongkyun,Hong, Sung-Tae,Bae, Eunkyung,Kaang, Bong-Kiun,Kim, Jaeseob Nature Pub. Co 2005 Nature genetics Vol.37 No.3
Several transient receptor potential channels were recently found to be activated by temperature stimuli in vitro. Their physiological and behavioral roles are largely unknown. From a temperature-preference behavior screen of 27,000 Drosophila melanogaster P-insertion mutants, we isolated a gene, named pyrexia (pyx), encoding a new transient receptor potential channel. Pyx was opened by temperatures above 40 °C in Xenopus laevis oocytes and HEK293T cells. It was ubiquitously expressed along the dendrites of a subset of peripheral nervous system neurons and was more permeable to K<SUP>+</SUP> than to Na<SUP>+</SUP>. Although some pyx alleles resulted in abnormal temperature preferences, pyx null flies did not have significantly different temperature preferences than wild-type flies. But 60% of pyx null flies were paralyzed within 3 min of exposure to 40 °C, whereas only 9% of wild-type flies were paralyzed by the same stimulus. From these findings, we propose that the primary in vivo role of Pyx is to protect flies from high-temperature stress.
이영석(Youngseok Lee),이재우(Jaewoo Lee),윤석호(Seokho Yoon),박선(Sun Park),이성로(Seong Ro Lee) 한국통신학회 2013 한국통신학회 학술대회논문집 Vol.2013 No.6
본 논문에서는 가중 결합 방식을 이용한 새로운 이진 옵셋 반송파 (binary offset carrier: BOC) 상관함수를 제안한다. 먼저, 수신 받은 BOC 신호에 대해 하나의 부반송파 펄스를 여러 개의 구형 펄스로 해석하고, 그에 따른 부분상관함수들을 생성한다. 이후 생성된 부분상관함수들 중 일부를 절대값의 합과 차를 이용하여 결합하고, 그 결과를 나머지 부분상관함수들과 가중 결합을 수행하여 주변 첨두가 제거된 새로운 비모호 BOC 상관함수를 생성한다. BOC 코드 추적에 제안한 새로운 비모호 BOC 상관함수를 이용한 경우, 기존의 상관함수들을 이용한 경우들에 비해 더욱 향상된 코드 추적 성능을 가진다는 것을 모의실험을 통해 확인한다.
이정호(Jeongho Lee),이성환(Seongwhan Lee),이정규(JungKyu Lee),이효정(Hyojeong Lee),신재혁(Jehyuck Shin),정선영(Seonyeong Jeong),오영석(YoungSeok Oh),진호(Ho Jin) 한국항공우주학회 2016 韓國航空宇宙學會誌 Vol.44 No.4
SIGMA(Scientific cubesat with Instruments for Global Magnetic field and rAdiation) 큐브위성은 근 지구 자기장 세기와 우주 방사선량 측정을 위해 경희대학교에서 개발한 초소형인공위성이다. 우주 임무 수행을 위해 비행 소프트웨어는 위성을 제어하고 데이터를 처리하는 중요한 역할을 담당한다. 본 연구에서는 SIGMA 큐브위성의 임무 수행을 위해 비행소프트웨어를 구현한 것으로서 일반적으로 임베디드 시스템에서 사용하는 실시간 운영체제를 사용하지 않고 단일 프로세스 내에서 모든 태스크를 처리하도록 구현하였다. 이는 SIGMA 큐브위성의 임무 수행 절차와 시스템 제어 방법을 고려한 것으로서 소프트웨어의 오버헤드(overhead)를 낮추고 임무 수행에 집중할 수 있는 효과적인 방법이다. SIGMA(Scientific cubesat with Instruments for Global Magnetic field and rAdiation) CubeSat has been developed for magnetic field measurement of the Earth and space radiation measurement at Kyung Hee university. The flight software plays important roles in controlling the satellite and processing the data in the space mission. In this paper, the Flight Software has been implemented to process all the tasks in the one thread without RTOS(Real Time Operating System). This is an effective mothed not only to concentrate the space mission of CubeSat but also to reduce the overhead of the Flight Software by considering the mission perform procedures and the system control methods.
Application of Audio Watermarking Procedures for Mix Music
Youngseok Lee,Jongweon Kim 보안공학연구지원센터 2016 International Journal of Security and Its Applicat Vol.10 No.2
In this paper we applies typical four audio watermarking technologies to protect ownership or copyright of mix music which is combined two or three pre-existing song. In experimental results, applied watermarking technologies cannot be applicable to mix music and three technologies fail to extract watermarks from mix music. This results is from mix music that does not contain full watermark information. Therefore applicable watermarking technology should development for mix music. The common problem of failed technologies cannot extract the second watermark from underlying mix music.
Lee, Youngseok,Song, Sung Eun,Yoon, Eul-Sik,Bae, Jeoung Won,Jung, Seung Pil The Korean Surgical Society 2017 Annals of Surgical Treatment and Research(ASRT) Vol.93 No.6
<P>Silicone implants are widely used in aesthetic and reconstructive breast surgery. Silicone lymphadenopathy is a well-known rare complication of implant insertion. Silicone leakage from a rupture or silicone bleeding can accumulate in lymph nodes. Foreign body reactions in the affected lymph nodes may be misdiagnosed as metastasis or malignant lymphadeno pathy upon initial presentation if silicone lymphadenopathy is not considered in the initial diagnosis. We report a case of siliconoma with extensive involvement of multiple lymph nodes mimicking malignant features to emphasize that clinicians should carefully evaluate each patient's medical history and disease status during differential diagnosis.</P>
Lee, Youngseok,Gong, Daeyeong,Balaji, Nagarajan,Lee, Youn-Jung,Yi, Junsin Springer 2012 Nanoscale research letters Vol.7 No.1
<P>Double stack antireflection coatings have significant advantages over single-layer antireflection coatings due to their broad-range coverage of the solar spectrum. A solar cell with 60-nm/20-nm SiN<SUB>X</SUB>:H double stack coatings has 17.8% efficiency, while that with a 80-nm SiN<SUB>X</SUB>:H single coating has 17.2% efficiency. The improvement of the efficiency is due to the effect of better passivation and better antireflection of the double stack antireflection coating. It is important that SiN<SUB>X</SUB>:H films have strong resistance against stress factors since they are used as antireflective coating for solar cells. However, the tolerance of SiN<SUB>X</SUB>:H films to external stresses has never been studied. In this paper, the stability of SiN<SUB>X</SUB>:H films prepared by a plasma-enhanced chemical vapor deposition system is studied. The stability tests are conducted using various forms of stress, such as prolonged thermal cycle, humidity, and UV exposure. The heat and damp test was conducted for 100 h, maintaining humidity at 85% and applying thermal cycles of rapidly changing temperatures from -20°C to 85°C over 5 h. UV exposure was conducted for 50 h using a 180-W UV lamp. This confirmed that the double stack antireflection coating is stable against external stress.</P>