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이성호,김광락,안도희,유재형,백승우,손종식,임성팔,정홍석 한국공업화학회 2001 응용화학 Vol.5 No.2
Hydrogen absorption experiments were carried out by the titanium(Ti) sponge for investigating the characteristics of hydrogen absorption. From experimental results, Ti sponges showed the high hydrogen absorption capacity inspite of low reaction temperature. The H/M which mean the capacity of hydrogen absorption was measured 2.0 for Ti sponge in the experimental condition of 25℃. The effects of the reaction temperature, activation conditions, and the presence of helium in the hydrogen were investigated.
Shon, Young-Min,Kim, Yeong-In,Koo, Bang-Bon,Lee, Jong-Min,Kim, Hye J.,Kim, Woo J.,Ahn, Kook J.,Yang, Dong W. Blackwell Publishing Ltd 2010 Epilepsia Vol.51 No.4
<P>Summary</P><P><U>Purpose:</U> </P><P>In comparison to temporal lobe epilepsy (TLE) patients with hippocampal sclerosis (TLE-HS), TLE patients without HS (TLE-NH) have a similar clinical course but may result in worse surgical outcome. We investigated whether the clinical features related to the lack of HS in TLE patients (TLE-NH) can be explained by water diffusion abnormalities throughout diffusion tensor imaging (DTI) by voxel-based analysis.</P><P><U>Methods:</U> </P><P>Nineteen patients with TLE-HS (left/right TLE 12:7), 18 patients with TLE-NH (left/right TLE 10:8), and 20 controls were included in the study. By statistical parametric mapping (SPM2), the diffusion properties specific to disease characteristics (TLE-HS vs. TLE-NH) were analyzed.</P><P><U>Results:</U> </P><P>In TLE-HS, we found the areas of increased mean diffusivity (MD) in their ipsilateral temporal and extratemporal areas including the hippocampus, parahippocampal, and frontoparietal regions. Left TLE-HS showed a characteristic MD increase in the ipsilateral posterior cingulum, isthmus of corpus callosum, and contralateral occipital and temporal regions, which was not observed in right TLE-HS group. In left TLE-NH, two regions of increased MD were observed in the ipsilateral posterior fornix (within fusiform gyrus) and posterior cingulum. Right TLE-NH did not show any increased MD.</P><P><U>Discussion:</U> </P><P>In left TLE-NH, we could find the water diffusion change along the posterior cingulum, which was quite different from the extensive abnormality from TLE-HS. In addition, there was a lesion-side–specific distribution (left predominant) of pathology in mesial TLE. This provides a possibility that TLE-NH is a heterogenous or entity different from TLE-HS.</P>
Shon, Sudeok,Ahn, Soohong,Lee, Seungjae,Ha, Junhong Hindawi Limited 2018 Mathematical problems in engineering Vol.2018 No.-
<P>This study aimed at obtaining a semianalytical solution for nonlinear dynamic system of shallow arches. Taylor method was applied to find the analytical solution, and an investigation of their dynamic characteristic was carried out to verify the applicability of this methodology for the shallow arches under step or periodic excitation. A polynomial solution can be obtained from this multistep approach with respect to time, and direct buckling as well as indirect buckling of the shallow arches can be observed, also. The results indicated that the dynamic buckling load level was higher with higher shape factor. Additionally, a change of attractor in phase space was investigated. Coupling in symmetric mode as well as asymmetric mode was observed in case of indirect buckling, and a sensitive response was also manifested during sinusoidal and beating excitation. These results of applying multistep Taylor series for the investigation of displacement response and attractor change revealed that this analytical approach was valid in explaining the dynamic buckling behavior of shallow arches under direct and indirect snapping.</P>
A Secure and Robust Connectivity Architecture for Smart Devices and Applications
Shon, Taeshik,Han, Kyusuk,Park, James J. (Jong hyuk),Jeong, Young-Sik,Lee, Yang Sun Hindawi Publishing Corporation 2011 EURASIP journal on wireless communications and net Vol.2011 No.-
<P>Convergence environments and technologies are urgently coming close to our life with various wireless communications and smart devices in order to provide many benefits such as connectivity, usability, mobility, portability, and flexibility as well as lower installation and maintenance costs. Convergence has brought important change not only in the way we live but also in the way we think. It is the progress towards the attempt to create and to evolve new valuable services through the device convergence and fusion of in-home, office, and various environments around the personal mobile apparatus. Based on the dynamic trends of convergence, it is widely argued that the increased requirements on secure and robust connectivity between a variety of mobile devices and their applications provide us the era of real pervasive computing environment. Thus, in this paper, we present a novel connectivity architecture using RF4CE-(Radio Frequency for Consumer Electronics-) based wireless zero-configuration and enhanced key agreement approach. We analyze the security and performance of our proposed approach by the development of the prototype H/W and the construction of a testbed with CE and mobile devices.</P>
Shon, Kwang Ho 울산대학교 1980 연구논문집 Vol.11 No.2
Cesaro sequence spaces Ces(p)와 Ces(∞)는 J.S. Shiue(1969)가 처음 소개한 sequence space로서 l space와 l space들과 유사한 해석적 구조를 가지고 있음이 연구되었다. 본 논문에서는 Cesaro sequence spaces Ces(p), 1<p<∞들 사이의 몇가지 위상적 관계를 규명하고 Ces(p)=Ces(q)가 성립할 필요충분 조건을 구하였다. The Cesaro sequence spaces Ces(p), 1<p<∞ and Ce(∞ was introduced by J.S. Shiue (1969) and he showed that they have an analytic structure like spaces l? and l? . In this paper we consider various topological relationaships between the Cesaro sequence spaces Ces(p), 1<p<∞ and we give conditions of a nature which are equivalent to the statements that Ces(p)=Ces(q).