440 research outputs found
Groupers for deterministic guaranteed service in an FH-OFDM wireless system
No full textGroupers are proposed to guarantee strict delay bounds of a large number of real-time sessions in advanced wireless networks that adopt adaptive modulation techniques. We show that the number of admitted sessions is increased significantly, if groupers are used.
Raw Data for Real-time, In Vivo Skin Cancer Diagnostics by Laser Induced Plasma Spectroscopy Combined with Deep Learning-based Diagnostic Algorithm
No full textIn this study, we developed a real-time, minimally invasive, in vivo skin cancer diagnostic method utilizing non-discrete molecular Laser Induced Plasma Spectroscopy (LIPS) combined with deep neural network (DNN)-based diagnostic algorithm. LIPS has the capability of minimally invasively extracting biochemical information of skin lesion using an ultra-short pulsed laser. The objective of this in vivo study was to validate the practical applicability of LIPS and DNN-based diagnostic device to discriminate skin cancers including basal cell carcinoma (n=186), squamous cell carcinoma (n=93) and melanoma (n=14) from various benign lesions. In vivo LIPS spectra were acquired from total 293 skin cancers and 332 benign lesions in multi-site clinical study.
The raw data of analysed lesions is listed here
Hydride 형성 부극에서의 수소 흡수 및 발생 반응의 전기화학적 특성에 대한 연구
No full text학위논문(박사) - 한국과학기술원 : 재료공학과, 1996.2, [ xiii, 162 p. ]The present work is concerned with the electrochemical characteristics of hydrogen absorption into and evolution from hydride forming anodes.
In chapter Ⅲ, the hydrogen absorption reaction (HAR) into and hydrogen evolution reaction (HER) from Pd foil electrode have been investigated in 0.1 M NaOH solution by using electrochemical impedance spectroscopy (EIS), open-circuit potential transient and current transient techniques. Generalised Faradaic admittance for the indirect HAR into and HER from metal foil electrodes under the impermeable boundary conditions has been derived based upon Lim and Pyun``s kinetic approach to HAR and HER. The ac-impedance measurements were carried out in the overpotential range of -0.10 to 0.25 . Measured impedance spectra were analysed by using complex non-linear least squares (CNLS) fitting method on the basis of derived Faradaic admittance equation for hydrogen absorption under impermeable boundary conditions. Also, impedance spectra were theoretically calculated with different kinetic parameters for the HAR and HER having physical significance in order to characterise the influence of each kinetic parameter on the change of the impedance spectra in Pd foil electrode. From the occurrence of plateau region of the open-circuit potential transients and hydrogen content below 0.03 determined from the current transients it is suggested that a thin β-phase palladium hydride layer is formed beneath the electrode surface. The indirect to direct HAR transition in mode occurs at the overpotential of 0.08 below which the direct HAR is predominant. From the hydrogen diffusivity reduced with decreasing overpotential, it is indicated that the thin β-phase palladium hydride layer acts as a barrier for hydrogen diffusion in the electrode. The formation of the thin β-phase palladium hydride layer between the electrode surface and subsurface accounts for the predominant direct HAR mode and hydrogen diffusion impeded by the phase...한국과학기술원 : 재료공학과
The Building Block versus Stumbling Block Debate of Regionalism: From the Perspective of Service Trade Liberalization in Asia
No full textWhen debating the pros and cons of economic regionalism, haven't we focused enough on trade in goods at the expense of services? This article argues that regionalism is certainly a building block, not a stumbling block to a multilateral trading system, using the services liberalization scheme of Association of Southeast Asian Nations (ASEAN) as a case study. At the same time, it is critical to set out a proper institutional arrangement to ensure that regional services liberalization initiatives reinforce the global services regime. This paper proposes an amendment of the current GATS Article V to define the appropriate relationship between multilateralism and regionalism in the context of services.GATS; AFAS; ASEAN; services; regionalism; free trade; economic integration
Effects of applied potential on corrosive wear of Al-Si alloy
No full text학위논문(석사) - 한국과학기술원 : 재료공학과, 1989.2, [ vii, 62 p. ]한국과학기술원 : 재료공학과
Hydrogen transport through bilayers of Fe/electrodeposited Ni,Fe/electrodeposited Cr and Fe/passivating oxide film by electrochemical methods
No full text학위논문(박사) - 한국과학기술원 : 재료공학과, 1989.8, [ v, 149 p. ]한국과학기술원 : 재료공학과
Surface display of sialyltransferase on the outer membrane of <i>Escherichia coli</i> and ClearColi
No full text
α2,3-Sialyltransferase from Pasteurella multocida (PmST1)is an enzyme that transfers a sialyl group of donor substrates to an acceptor substrate called N-acetyl-D-lactosamine (LacNAc). In this study PmST1 was expressed on the outer membrane of wildtype Escherichia coli (BL21)with lipopolysaccharide (LPS)and ClearColi with no LPS, and then the enzyme activity and expression level of PmST1 were compared. As the first step, the expression levels of PmST1 on the outer membranes of wildtype E. coli (BL21)and ClearColi were compared according to the IPTG induction time, and the absolute amount of surface-displayed PmST1 was calculated using densitometry of SDS-PAGE. As the next step, the influence of LPS on the PmST1 activity was estimated by analyzing Michaelis-Menten plot. The enzyme activity of PmST1 was analyzed by measuring the concentration of CMP, which was a by-product after the transfer of the sialyl group of donor compounds to the acceptor compounds. From a Michaelis–Menten plot, the enzyme activity of the surface-displayed PmST1 and the maximum rate (V
max
)of ClearColi were higher than those of wildtype E. coli (BL21). However, the K
M
value, which represented the concentration of substrate to reach half the maximum rate (V
max
), was similar for both enzymes. These results represented such a difference in enzyme activity was occurred from the interference of LPS on the mass transport of the donor and acceptor to PmST1 for the sialyl group transfer.
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Re-considering Asian Financial Regionalism in the 1990s
No full textA common view holds that the trend toward Asian financial regionalism is a relatively new phenomenon that became significant after the Asian financial crisis of 1997/98. This paper challenges this view by exploring and analyzing financial regionalist projects in Asia throughout the 1990s. As they demonstrate, Asian countries, especially Japan, have held a strong desire to establish an Asia-only regional cooperation framework at least since the early 1990s. The basic policy stance of the United States (US), in contrast, was to participate in Asian forums and/or itself to propose and establish regional groupings with itself as a member. This competition is crucial to understanding the rise and fall of various regionalist projects. The analysis of Asian financial regionalism from the standpoint of the membership sheds new light on studies of regionalism. Among the important theoretical implications of this empirical study is that by exercising "blocking power" over a regionalist project, an outside power is not simply killing the proposal, but is participating in the proposed regional framework and seeking to influence it. Regionalism can be best understood as a project under which a relatively minor power seeks to establish a framework that excludes more influential states in order to increase its influence within the group.Regionalism; regional cooperation; Asian Monetary Fund (AMF); Chiang Mai Initiative (CMI); membership; blocking power
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