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Articles 1 - 6 of 6
Full-Text Articles in Engineering
Snow Pack Temperature Sensor, M. Shamshi, Raman Attri, V. Sharma
Snow Pack Temperature Sensor, M. Shamshi, Raman Attri, V. Sharma
Raman K. Attri
The study of snow hydrological characteristics plays the major part in forecast of snow-melt, snow run-off water of rivers, potential release of snow avalan'che and climatic changes. Increasing importance of study of snow hydrology has lead to the development of many snow sensors which monitors physical parameter of snow. Design of such snow sensors has been a difficult job because of harsh environmental conditions. This paper present the design considerations and performance characteristics of snowpack temperature profile sensing probe. This probe provides temperature gradient and temperature distributions within the snow-pack, and ground at different depths. The information on temperature distribution …
Subband Absolute Moment Block Truncation Coding, Kai-Kuang Ma, Sarah A. Rajala
Subband Absolute Moment Block Truncation Coding, Kai-Kuang Ma, Sarah A. Rajala
Sarah A. Rajala
In this paper, a new subband coding system called subband absolute moment block truncation coding (SAMBTC) is introduced to compress monochrome images and color images recorded in YIQ and L*u*v* uniform color spaces. The SAMBTC incorporates full‐band absolute moment block truncation coding (AMBTC) into subbands along with a new subband dynamic bit allocation algorithm which is derived from the Shannon rate‐distortion bound. Simulation results show that the proposed Shannon/bound‐based bit allocation algorithm outperforms the commonly used standard‐deviation‐based bit allocation scheme. Compared with ABMTC, SAMBTC achieves superior imaging without blocking artifacts at low bit rates
Low‐Frequency Perturbation Theory In Eddy‐Current Non‐Destructive Evaluation, Nicola Harfield, Y. Yoshida, John R. Bowler
Low‐Frequency Perturbation Theory In Eddy‐Current Non‐Destructive Evaluation, Nicola Harfield, Y. Yoshida, John R. Bowler
Nicola Bowler
A method is presented by which series solutions for the impedance change in an eddy‐current test probe due to closed cracks in a non‐magnetic, conducting half‐space can be derived at low frequency. The series solution is applicable for flaws whose dimensions are much smaller than the electromagnetic skin‐depth. The problem is formulated using an approach in which the flaw is represented by an equivalent distribution of current dipoles. The electric field scattered by the flaw is then written as an integral, over the flaw, of the product of the dipole density distribution and an appropriate Green’s function. Terms in the …
Toward Efficient Scheduling Of Evolving Computations On Rings Of Processors, Lx Gao, Al Rosenberg
Toward Efficient Scheduling Of Evolving Computations On Rings Of Processors, Lx Gao, Al Rosenberg
Lixin Gao
No abstract provided.
Reconfigurable Intelligent Optical Backplane For Parallel Computing And Communications, Ted H. Szymanski, Harvard Scott Hinton
Reconfigurable Intelligent Optical Backplane For Parallel Computing And Communications, Ted H. Szymanski, Harvard Scott Hinton
H. Scott Hinton
A reconfigurable intelligent optical backplane architecture for parallel computing and communications is described. The backplane consists of a large number of reconfigurable optical channels organized in a ring with relatively simple point-to-point optical interconnections between neighboring smart-pixel arrays. The intelligent backplane can implement (l) dynamically reconfigurable connections between any printed circuit boards, (2) dynamic embeddings of classical interconnection networks such as buses, rings, multidimensional meshes, hypercubes, shuffles, and crossbars, (3) multipoint switching, (4) sorting, (5) parallel-prefix operations, (6) pattern-matching operations, (7) snoopy caches and intelligent memory systems, and (8) media-access control functions. The smart-pixel arrays can be enhanced to include …
System For Synchronizing Execution By A Processing Element Of Threads Within A Process Using A State Indicator Us:5553305, Robert Iannucci, Steven Gregor
System For Synchronizing Execution By A Processing Element Of Threads Within A Process Using A State Indicator Us:5553305, Robert Iannucci, Steven Gregor
Robert A Iannucci
No abstract provided.