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최재욱,이재훈,민형복 成均館大學校 科學技術硏究所 1999 論文集 Vol.50 No.2
While embedded memories contribute to enhanced process performance, they also complicate testability. The testing of embedded memories is a time consuming exercise, because accessing the memories from off-chip is difficult, if not impossible. Existing Logic Fault Simulators do not simulate embedded memory, but just simulate pin faults. It is believed that the testing of embedded memories are due to Built-in Self-test. In this paper, realistic fault models which can be occurred in real memory are considered first, then functional memory fault simulator for that fault models is implemented. Mathematical fault model is not considered, but realistic fault model is considered and data structure that is called "fault effect" is used for reasonable usage of memory for fault simulation.
한국판 임상가용 아동 및 청소년을 위한 외상후 스트레스장애 척도의 신뢰도 및 타당도 연구
구정일,김태형,은헌정,최말례,이선미,조수진,송옥선,김형욱 大韓神經精神醫學會 2006 신경정신의학 Vol.45 No.6
Objectives : This present study was conducted to explore the reliability and the validity of Clinician Administered PTSD Scale for Children and Adolescents Korean version (CAPS-CA) Mcthods : The Subjects were children and adolescents (8-13yrs) from different places: a certain elementary school, three orphanages, a general hospital, and two neuropsychiathc local clinics. Only subjects who experienced a catastrophic traumatic event were tested by CAPS-CA, CDI, RCMAS, and TSC. Rcsults : The range of correlations between item-criterion were .67-.84. The coefficients of internal consistency were .87. and test-retest reliability was .90, were all the coefficients in the proper range. Inter-correlations of CAPS-CA, CDI, RCMAS, and TSC scale showed significant correlation. TSC showed the highest correlation coefficient. CAPS-CA can be a useful clinician-administered diagnostic instrument for children and adolescents PTSD symptoms. Conclusion : The reliability and the validity of CAPS-CA were confirmed. CAPS-CA could be applied for diagnostic purposes of PTSD in children and adolescents.
기존 조적조 건축물의 내진-에너지 효율 복합 보강 기술 개발
최형욱 ( Choi Hyoung-wook ),백은림 ( Beak Eun-rim ),최형석 ( Choi Hyoung-suk ),김태형 ( Kim Tae-hyoung ),정대성 ( Jung Dae-sung ) 한국구조물진단유지관리공학회 2020 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.24 No.1
본 연구에서는 내진성능과 에너지 효율 성능이 부족한 기존 조적조 건축물에 대하여 내진 및 에너지(난방 및 단열) 성능을 복합적으로 보강할 수 있는 TCP 보강 공법을 개발하고 기초연구로 실험을 통해 내진성능을 평가하였다. TCP는 격자형 섬유(textile)와 온수를 공급할 수 있는 모세관(capillary tube)을 경량 모르타르 내에 삽입하여 패널 형태로 제작하고 조적벽체에 부착하였다. 비보강 및 TCP 보강 조적벽체의 수평반복가력실험을 수행한 결과, 보강벽체는 초기 변형단계에서 강도가 다소 증가되었으며, 이후 균열 발생시 탄소섬유가 인장력을 지지하면서 취성적 파괴 모드가 제어되는 경향을 나타내었다.
Texture Evolution during Hot Rolling Deformation in Al-5wt%Mg Alloy
Choi, Shi Hoon,Song, Y.S.,Kim, Jong Kweon,Kim, Hyoung Wook,Kang, Suk Bong Trans Tech Publications, Ltd. 2007 Key Engineering Materials Vol.345-346 No.-
<P>Evolution of crystallographic texture by hot rolling deformation at the temperature of 200°C was investigated by hot rolling tests on as-cast Al-5wt%Mg alloy fabricated by a new strip cast technology. Texture variation through the thickness direction in the Al-5wt%Mg alloy was examined experimentally. Macrotexture and microtexture measurements were conducted using X-ray diffractometer and electron backscatter diffraction (EBSD), respectively. Experimental investigation reveals that the evolution of texture and microstructure is strongly dependent on a distance from center of the Al-5wt%Mg alloy sheet. It was found that the shear texture components tend to be increased at the surface region of the hot-rolled specimen.</P>
Choi Myeong Geun,Ye Byong Duk,Yang Suk-Kyun,Shim Tae Sun,Jo Kyung-Wook,Park Sang Hyoung 대한의학회 2022 Journal of Korean medical science Vol.37 No.14
The present study investigated the risk of active tuberculosis in patients with inflammatory bowel disease (IBD) treated with vedolizumab or ustekinumab, in actual clinical settings in a country with an intermediate tuberculosis burden. The medical records of 238 patients with IBD who received vedolizumab or ustekinumab were retrospectively reviewed at a tertiary referral center in South Korea. All patients had ≥ 3 months of follow-up duration and underwent a latent tuberculosis infection screening test before initiation of the administration of these drugs. Of the 238 patients enrolled, 181 had Crohn’s disease, and 57 had ulcerative colitis. During the median 18.7 months of follow-up, active tuberculosis did not develop in any patient treated with vedolizumab or ustekinumab. Therefore, we concluded that the risk of tuberculosis appears to be low in patients with IBD treated with vedolizumab or ustekinumab in South Korea.