Specimens of concrete were cast for examination of size effect rule;theoretical considerations of size effect rule are in fairly good agreement with experimental values;relation between drying and shrinkage;shrinkage ...
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Specimens of concrete were cast for examination of size effect rule;theoretical considerations of size effect rule are in fairly good agreement with experimental values;relation between drying and shrinkage;shrinkage per unit drying is directly proportional to average drying value.
This paper deals with the problematic of the actual short-circuit power determination in real conditions. Presented principle of a real value of short-circuit power determination in arbitrary node of the power system ...
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This paper deals with the problematic of the actual short-circuit power determination in real conditions. Presented principle of a real value of short-circuit power determination in arbitrary node of the power system is based on the measurement of one cycle RMS voltage and current changes. Described should be useful for determination of short-circuit power in the nodes electrically far enough from any synchronous machines (mainly from a generators of big power plants), in which the subtransient and transient effects of synchronous machines can be neglected. The comparison of the maximum short-circuit power computed according to the IEC 60909-0 standard and the actual short-circuit power obtained from the measurement of RMS voltage and current changes in the island operation of a small network is presented in this paper.
For the purpose of sub-millisecond wavelength switching, the feedforward current control technique was applied to the DFB laser. At the switching from 191.2 THz to 191.0 THz, our designed controller successfully reduc...
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ISBN:
(纸本)9781509024513
For the purpose of sub-millisecond wavelength switching, the feedforward current control technique was applied to the DFB laser. At the switching from 191.2 THz to 191.0 THz, our designed controller successfully reduced the wavelength switching time of the tunable DFB laser array down to 800 μs.
The rapid advancement of deep learning techniques usage in treating several medical issues and search for innovative methods in predicting COVID19 is the leading cause for this finding. Feature-level ensemble model is...
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The expansion joints in the multi-span simply supported bridge can be eliminated by using the link slab. The ultra-high performance concrete (UHPC) with high tensile strength and crack resistance is an effective mater...
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In 1987, the Edward G. Miner Library of the University of Rochester Medical Center completed the second major renovation in its 62-year history. The goal of the renovation was to provide additional space for the libra...
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In 1987, the Edward G. Miner Library of the University of Rochester Medical Center completed the second major renovation in its 62-year history. The goal of the renovation was to provide additional space for the library's 3 main constituencies: its readers, its collections, and its staff. A case study of the renovation is presented, outlining processes and issues that shaped the final outcome. The success of the renovation is assessed in terms of project goals, design, and functionality. Changes made since 1987 to accommodate automation are also summarized. The conclusion suggests that library renovation be viewed as a continuing process, and proposes that principles of interface design are appropriate guidelines for evaluating library design across time.
The proceedings contains 55 papers from the Proceedings of SPIE: Sol-Gel Optics IV. The topics discussed include: preparation and optical properties of amorphous silica doped with porphins (TCPP);dye-matrix interactio...
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The proceedings contains 55 papers from the Proceedings of SPIE: Sol-Gel Optics IV. The topics discussed include: preparation and optical properties of amorphous silica doped with porphins (TCPP);dye-matrix interactions in sol-gel derived hybrid organic-inorganic nanocomposites;dye-doped spherical particles of optical cavity structure;optical and electro-optical devices from organically doped sol-gel materials and laser performance in dye-molecule-doped xerogels.
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