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최형석,전법규,김남식,정진환 釜山大學校生産技術硏究所 2007 生産技術硏究所論文集 Vol.66 No.-
건물에 작용하는 진동하중은 구조물 자체의 성능에 영향을 미칠 뿐만 아니라 거주하는 사람이나 작업기계 동에 나쁜 영향을 가져올 수 있다. 본 연구에서는 이러한 진동에 대한 영향을 평가하는 국내외의 기준에 대하여 고찰하고 다양한 하중과 주파수 대역에서 실험이 가능한 대형지진모사 실험센터에 대한 진동영향 평가를 수행하여 사용성 저하 여부를 확인하였다.
Statistical Modeling of Gate Oxide Breakdown under constant current stresses
Cheung, Tae-Sik,Choi, Woo-Young,Kim, Bong-Ryul THE RESEARCH INSTITUTE OF ASIC DESIGN YONSEI UNIVE 1996 Journal of the Research Institute of ASIC Design Vol.3 No.1
A breakdown model of gate oxides under constant current stresses is proposed, which directly relates the oxide lifetime to the stress current density, and includes statistical nature of oxide breakdown using the effective oxide thickness. It is shown that this model can reliably predict the TDDB characteristics for any current stress levels and oxide areas.
Cheung, Kingman,Ko, P.,Lee, Jae Sik,Park, Jubin,Tseng, Po-Yan American Physical Society 2016 Physical Review D Vol.94 No.3
<P>We interpret the potential observation of the 750 GeV diphoton resonance at the LHC in models, in which an SU(2) isospin-singlet scalar boson mixes with the standard model (SM) Higgs boson through an angle alpha. Allowing the singlet scalar boson to have renormalizable couplings to vectorlike leptons and quarks and introducing sizable decay width of the 750 GeV diphoton resonance into non-SMparticles such as dark matters, we can explain the large production cross section sigma(H-2) x B(H-2 -> gamma gamma) as well as the apparent large total width of the boson without conflicts from the results obtained by previous global fits to the SM Higgs boson data.</P>
Capsule endoscopy in small bowel tumors: A multicenter Korean study
Cheung, Dae Young,Lee, In‐,Seok,Chang, Dong Kyung,Kim, Jin Oh,Cheon, Jae Hee,Jang, Byung Ik,Kim, Yong‐,Sik,Park, Cheol Hee,Lee, Kwang Jae,Shim, Ki‐,Nam,Ryu, Ji‐,Kon,Do, Jae Blackwell Publishing Asia 2010 Journal of gastroenterology and hepatology Vol.25 No.6
<P><B>Abstract</B></P><P><B>Background and Aim: </B> Capsule endoscopy (CE) has proven to be highly effective at detecting small bowel lesions in a variety of clinical conditions, but studies concerning the practical impact of CE on small bowel tumors are still scarce, especially in the Asian population. The aim of this study was to evaluate the diagnostic and therapeutic impact of CE in the field of small bowel tumors.</P><P><B>Methods: </B> CE records consecutively pooled from the beginning of use of CE in Korea, October 2001 until April 2008, in 14 centers throughout Korea were reviewed. Clinical information and CE video images of small bowel tumors were analyzed.</P><P><B>Results: </B> A total of 1332 cases undergoing CE were reviewed with all clinical indications. Small bowel tumors were diagnosed with CE in 57 (4.3%) of 1332 patients. The tumors were malignant in 33 cases, and included three adenocarcinomas, eight lymphomas, 20 gastrointestinal stromal tumors, and two metastatic cancers. The most frequent indications for CE in malignant tumors were obscure gastrointestinal bleeding, followed by abdominal pain and weight loss. Thirty of 57 tumors were identified exclusively by CE (diagnostic impact = 30/57), and they were smaller in size (mean, range: 14.3 mm, 2–35 mm) compared to the other tumors detected in radiological studies (48.7 mm, 10–110 mm). Seven patients underwent surgical resection (therapeutic impact = 7/57).</P><P><B>Conclusion: </B> CE effectively identifies small bowel tumors that are undetectable by conventional radiological studies (diagnostic impact = 52.6%) and can critically change the therapeutic course (therapeutic impact = 12.3%).</P>