11,414 research outputs found
The construction of binary Huffman equivalent codes with a greater number of synchronising codewords
No full text[[abstract]]An inherent problem with a Variable-Length Code (VLC) is that even a single bit error can cause a loss of synchronisation, and thus lead to error propagation. Codeword synchronisation has been extensively studied as a means to overcome this drawback and efficiently stop error propagation. In this paper, we first present the sufficient and necessary conditions for the existence of binary Huffman equivalent codes with the shortest, or at most two shortest, synchronising codeword(s) of length m + 1, where m (>1) is the shortest codeword length. Next, based on the results, we propose a unified approach for constructing each of these binary Huffman equivalent codes with the shortest, or at most two shortest, synchronising codeword(s) of length m + 1, if such a code exists for a given length vector.[[note]]SC
Self-Assembled Water-Soluble Cobalt Porphyrin Monolayers at Gold Electrodes with High Electrocatalysis of 2-Mercaptoethanol Oxidation
No full text[[abstract]]We reported the study on the preparation and the electrocatalytic properties of self-assembled monolayers of a water-soluble cobalt(III) meso-tetrakis(N- methyl-4-pyridyl) porphyrin (CoTMPyP) on gold disk. Cyclic voltammetry showed that the modified electrode is stable, lowers the overpotentials and improves the electrochemical oxidation of 2-mercaptoethanol in 0.1 M NaOH solutions, as compared to the bare Au. Absorption spectral results showed that Co(III/II) center of CoTMPyP involved in the oxidation reactions. The electrocatalytic reaction mechanisms were proposed.[[note]]SC
Establishment, characterization and application of monoclonal-antibodies against eel virus European (EVE).
No full textPreparation, electrochemical and spectral properties of free-base and manganese N-methyl-pyridylethynyl porphyrins
No full text[[abstract]]Two series of free-base and manganese N-methyl-pyridylethynyl-5,15-biphenyl porphyrins were synthesized, and their UV-Visible, electrochemical and spectro-electrochemical properties were studied. Cyclic voltammetry experiments showed positive shifts in the reduction potentials and the UV-Visible spectra showed significant red-shifts in the absorption wavelengths of these porphyrins, indicating the effects of N-methyl-pyridylethynyl substituents.[[note]]SC
Documentation of soil conditions at liquefaction and non-liquefaction sites from 1999 Chi-Chi (Taiwan) earthquake
No full text[[abstract]]The 1999 Chi-Chi, Taiwan, earthquake provides case histories of ground failure and non-ground failure that are valuable to the ongoing development of liquefaction susceptibility, triggering and surface manifestation models because the data occupy sparsely populated parameter spaces (i.e. high cyclic stress ratio and high fines content with low to moderate soil plasticity). In this paper, we document results from several large site investigation programs conducted in Nantou, Wufeng and Yuanlin, Taiwan. The seismic performance of the investigated sites include non-ground failure building and free-field sites, building sites with partial foundation hearing failures, free-field lateral spread sites, and free-field level ground sites with sediment boils. Field and laboratory investigation protocols for the sites are described, including cone penetration testing (some with pore pressure and shear wave velocity measurements) and rotary wash borings with standard penetration testing (including energy measurements). Implications of the SPT energy measurements with respect to established guidelines for the estimation of SPT energy ratio (including short rod corrections) are presented. Finally, data for three example sites are shown that illustrate potential applications of the data set, and which also demonstrate a condition where existing liquefaction analysis procedures fail to predict the observed field performance. (C) 2004 Elsevier Ltd. All rights reserved.[[note]]SC
SC author and illustrator Kate Salley Palmer signing book
No full textPhotograph of SC author and illustrator Kate Salley Palmer signing boo
Book signing by SC author and illustrator Kate Salley Palmer
No full textPhotograph of Book signing by SC author and illustrator Kate Salley Palme
Analysis of a reinforced slope failure induced by the Chi-Chi (Taiwan) earthquake
No full text[[abstract]]A reinforced soil slope located at the entrance road of National Chi-Nan University failed during the Chi-Chi (Taiwan) Earthquake. The theme of this paper is to provide an insight into the design, construction, and failure of this reinforced slope. The location, geometry, and configuration of the slope are described. A detailed field observation of slope failure is made, in order to collect information about materials, construction, and failure mode. The soil and reinforcement materials retrieved from field are tested for strength properties. Slope stability analyses including pseudo-static and stress deformation analyses are performed. pseudo-static analysis reveals that the failure is likely induced by a pseudo-static coefficient between 0.4 and 0.5. The stress deformation analysis reveals that shear strain is initiated at the top and bottom connections between reinforced zone and natural soil. The critical failure surfaces estimated from field observation, pseudo-static analysis, and stress deformation analysis compare reasonably well.[[note]]SC
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