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한국인 정신분열병 환자의 안구추적운동 이상과 COMT 유전자의 Val108/158Met 다형성의 연합 연구
장호준,문현일,이연정,김임렬,이인상,서한길,김기훈,신태민,박병래,신형두,한선호,한상우,우성일,Jang, Ho Joon,Moon, Hyun-Il,Lee, Yeon Jung,Kim, Im-Yel,Lee, In-Sang,Seo, Han-Gil,Kim, Ki-Hoon,Shin, Tae-Min,Park, Byung-Lae,Shin, Hyung Doo,Han, Sun 대한생물정신의학회 2008 생물정신의학 Vol.15 No.4
Objectives : We investigated the association of Val108/158Met polymorphism on catechol-O-methyl transferase(COMT) gene with smooth pursuit eye movement(SPEM) abnormality in Korean schizophrenia patients. Methods : We measured SPEM in 217 Korean schizophrenia patients(male 116, female 101) and divided them into two groups, one was a good SPEM function group and the other was a poor SPEM function group. Then we analyzed Val108/158Met polymorphism on COMT gene. We compared the differences of genotype and allele distributions of the polymorphism on COMT gene between the two groups. Results : The natural logarithm value of signal/noise ratio(Ln S/N ratio) of the good SPEM function group was $4.39{\pm}0.33$(mean${\pm}$s.d.) and that of poor SPEM function group was $3.17{\pm}0.71$. There were no statistically significant differences of age and male/female ratio between the two groups. There were no significant differences of genotype or allele distributions of the Val108/158Met polymorphism on COMT gene between the two schizophrenic groups. Conclusions : The results suggest that Val108/158Met polymorphism on COMT gene is not related to SPEM function abnormality in schizophrenia.
장호준(Ho Joon Jang),구본민(Bon Min Koo),박순형(Soon Hyung Park),남성일(Sung Il Nam) 대한두개저학회 2016 대한두개저학회지 Vol.11 No.1
Skull Base Osteomyelitis (SBO) is very rare and life threatening disease. This disease may typically occur due to contiguous spread of invasive infection from the ear. Severe otalgia and headaches are typical symptoms and cranial nerves may also be involved through stylomastoid foramen or jugular foramen. Most of suffered patients have systemic immunocompromised condition, often diabetes, or history of radiotherapy for head and neck cancer. SBO is most commonly caused by Pseudomonas aeruginosa. The inadequate responses to antipseudomonal therapy and poor control of blood glucose may raise the possibility of SBO. Surgery may also indicated if the disease doesn’t response on appropriate therapy. Here we have recently encountered a rare case of bilateral SBO after mastoidectomy. It is an uncommon complication of mastoidectomy, so we report about this case.
한국형 전술데이터링크 시스템 구현을 위한 무선모뎀 시스템 설계
최효기,장호준,송영환,장동운,주재우,서난솔,Choi, Hyo-Ki,Jang, Ho-Joon,Song, Young-Hwan,Jang, Dhong-Woon,Joo, Jae-Woo,Seo, Nan-Sol 한국군사과학기술학회 2013 한국군사과학기술학회지 Vol.16 No.6
Next Generation Weapon system from the center of the platform to share information in real-time Network Centric Warfare(NCW: Network Centric Warfare) has been changed. Data link system is defined as a network. That is, all in real-time battlefield information is to enable sharing. Data link system is classified as a precision strike, Monitoring/control, control of a Patriot missile battery systems. These systems are most effective in a Joint warfare and precision strike. Data Link Systems(Data Communications) implementation is accomplished by using the KDLM(Korean Data Link Modem) and Radio Transceiver. KDLM is operated in conjunction with the legacy Radios(re-using fielded HF/VHF/UHF radio systems). In this paper, we describe in terms of KDLM system design. In this paper, the proposed design structure is how to effectively interact with legacy various radio. First, The results provide an analysis of that Dynamic TDMA system and apply modem structure. Radio characteristics data are necessary for an effective TDMA system design. This article analyzes the test results and describes the structure to improve the receive performance.
프로브 구조를 이용한 Ka 대역 도파관-마이크로스트립 트랜지션의 설계 및 제작
권혁자(Hyuk-Ja Kwon),이성주(Sung-Ju Lee),장호준(Ho-Joon Jang) 대한전자공학회 2008 電子工學會論文誌-TC (Telecommunications) Vol.45 No.7
본 논문에서는 Ka 대역에서 동작하는 송수신기에 쉽게 집적화 할 수 있는 프로브 구조를 이용한 도파관-마이크로스트립 트랜지션을 설계 및 제작하였다. 도파관-마이크로스트립 트랜지션은 프로브, 인덕턴스 선로, λ/4 임피던스 변환기, 그리고 50 Ω 마이크로스트립 선로로 구성되어있으며, 각 구성 요소들의 특성 임피던스 및 길이를 시뮬레이션을 통해 최적화하였다. 제작된 트랜지션의 측정결과, 30 ~ 40 ㎓ 대역 내에서 평균 1.3 ㏈의 삽입손실 특성, 14 ㏈이하의 입출력 반사 손실특성을 나타내었다. 마이크로스트립 선로 및 입출력 도파관의 손실을 고려하여 하나의 변환 구조 당 삽입 손실은 0.5 ~ 0.6 ㏈ 정도이다. We report the waveguide to microstrip transition using probe structure for Ka-band transceiver. The waveguide to microstrip transition is composed of probe, inductive line, λ/4 impedance transformer, and 50 Ω microstrip line. For design of the transition, we optimized the characteristic impedances and the lengths of the component parts. The fabricated transition exhibits an insertion loss of 1.3 dB and the input/output return losses of below 14 ㏈ between 30 and 40 ㎓. The insertion loss of each transition is about 0.5 ~ 0.6 ㏈, considering the losses in the microstrip line and input/output waveguides.