As low resolution shots, rotations of the head with respect to the camera, face deformation due to speech and so on inflict a great deal of uncertainty in FAP measurements, uncertainty is also inherent in the process ...
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ISBN:
(纸本)0780383532
As low resolution shots, rotations of the head with respect to the camera, face deformation due to speech and so on inflict a great deal of uncertainty in FAP measurements, uncertainty is also inherent in the process of expression analysis. In this paper we tackle such uncertainty via the observation that user emotions do not typically alter rapidly very often. Thus, possibilistic evidence may be gathered from each frame about the user expression;evidence from the current and recent frames can be combined using evidence theory.
An improved algorithmic ADC clocking sch.me is presented. Using an optimized clock generator, a significant improvement in conversion speed is achieved in the converter. This proposed optimized clock generator removes...
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An improved algorithmic ADC clocking sch.me is presented. Using an optimized clock generator, a significant improvement in conversion speed is achieved in the converter. This proposed optimized clock generator removes the wasted time which exists during all conversion cycles except for the first one. This technique can improve the conversion speed up to 82% compared to conventional algorithmic ADCs. Alternatively, static power consumption can also be reduced for a given conversion speed. An algorithmic ADC using the new clocking sch.me is validated using MATLAB behavioral simulations.
The objective of this paper is to model a linear variable reluctance motor using nonlinear magnetic circuit techniques, in order to account for material saturation and mutual coupling. The magnetic circuit approach ha...
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The objective of this paper is to model a linear variable reluctance motor using nonlinear magnetic circuit techniques, in order to account for material saturation and mutual coupling. The magnetic circuit approach has the advantages of simplicity and computational efficiency, so it is well suited for rapid performance evaluation at the initial design stage. The accuracy of the magnetic circuit model is directly compared with results from finite element analysis.
A novel multitarget tracking sch.me for passive radar, using a particle filter implementation of Ronald Mahler's Probability Hypothesis Density (PHD), is presented. Using range and velocity measurements from a sim...
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A novel multitarget tracking sch.me for passive radar, using a particle filter implementation of Ronald Mahler's Probability Hypothesis Density (PHD), is presented. Using range and velocity measurements from a simple non-directional receive antenna and low frequency transmitter pair, a target can be located along an ellipse. To pinpoint a target, multiple such antenna pairs are needed to locate the target at the intersection of the corresponding ellipses. Determining the intersection of these bistatic range ellipses, and resolving the resultant ghost targets, is generally a complex task. However, the PHD is found to provide a convenient and simple means of fusing together the multiple range and velocity measurements into coherent target tracks.
The objective of this paper is to simulate and study the dynamics of a linear variable reluctance motor using coupled network models. The need for an explicit functional expression to describe flux linkage has been el...
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The objective of this paper is to simulate and study the dynamics of a linear variable reluctance motor using coupled network models. The need for an explicit functional expression to describe flux linkage has been eliminated, since the magnetic subsystem is coupled to, and simultaneously solved with, the dynamics of the elec.rical and mechanical subsystems. This paper focuses on the development of a coupled network model that incorporates the effects of magnetic saturation and spatial harmonics, and also includes the application of position control software interacting with the physical system.
This paper presents an overview of our work, concerning a complete end-to-end framework for automatically generating message passing parallel code for tiled nested for-loops. It considers general parallelepiped tiling...
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ISBN:
(纸本)9781581138122
This paper presents an overview of our work, concerning a complete end-to-end framework for automatically generating message passing parallel code for tiled nested for-loops. It considers general parallelepiped tiling transformations and general convex iteration spaces. We address all problems regarding both the generation of sequential tiled code and its parallelization. We have implemented our techniques in a tool which automatically generates MPI parallel code and conducted several series of experiments, concerning the compilation time of our tool, the efficiency of the generated code and the speedup attained on a cluster of PCs. Apart from confirming the value of our techniques, our experimental results show the merit of general parallelepiped tiling transformations and verify previous theoretical work on sch.duling-optimal tile shapes.
This paper presents a half-rate clock and data recovery circuit (CDR) that combines the best features, fast acquisition and low jitter, of digital phase selec.ion and phase-lock-loop (PLL) CDR circuits. This CDR circu...
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ISBN:
(纸本)0780383699
This paper presents a half-rate clock and data recovery circuit (CDR) that combines the best features, fast acquisition and low jitter, of digital phase selec.ion and phase-lock-loop (PLL) CDR circuits. This CDR circuit consists of a phase selec.or, which can lock to the data in just a few clock cycles but has high jitter, and a PLL, which requires a much longer lock time but provides a low-jitter clock after locking. Fabricated in a 0.5 μm CMOS process, the combined CDR achieves operation up to 750 Mbps. Measurements show at least a 6% acquisition range, an initial acquisition time of 8 bit times with jitter of 30% bit time, and jitter of 16 ps at 688 Mbps after a PLL lock time of 700 ns. Power dissipation is 300 mW and die area is 1.4 × 1.4 mm2.
The notion of balancing for linear systems is extended to the nonlinear realm. The proposed method of balancing is based upon three principles: 1) Balancing should be denned with respect to a nominal flow;2) Only Gram...
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The notion of balancing for linear systems is extended to the nonlinear realm. The proposed method of balancing is based upon three principles: 1) Balancing should be denned with respect to a nominal flow;2) Only Gramians defined over small time intervals should be used to preserve the accuracy of the linear perturbation model and;3) Linearization should commute with balancing, in the sense that the linearization of a globally balanced model should correspond to the balanced linearized model in the original coordinates. Whereas it is generically possible to define a balanced framework locally, it is not possible to do so globally. Obstruction to the integrability of the Jacobian is generic in dimensions, n > 2. Here we show how to obtain the global balanced realization if the Mayer-Lie conditions are satisfied, and an interpolation method by integrable functions is proposed when this is not the case. The latter thus defines pseudo-balanced realizations.
The characteristics of the spreading sequence significantly affect the signal-to-interference power ratio (SIR) of the received signal in direct sequence code division multiple access (DS-CDMA) system. In this paper, ...
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The characteristics of the spreading sequence significantly affect the signal-to-interference power ratio (SIR) of the received signal in direct sequence code division multiple access (DS-CDMA) system. In this paper, we analyze the receiver performance of the forward link of a DS-CDMA system in terms of the SIR and bit error rate (BER) when pseudo noise (PN) codes and concatenated orthogonal/PN (OPN) codes are used as the spreading sequence. The use of OPN spreading codes can cancel out the intra-cell interference signals with equal path delay, but the use of PN spreading codes cannot, significantly degrading the performance. As a result, the BER performance of the OPN spreading system is better than that of the PN spreading system. The use of OPN spreading sequences can provide the system capacity at least two times larger than the use of PN spreading sequences in the single-cell environment even when the channel has a large number of multipaths. The two spreading systems also show significant difference in the user capacity even in a multi-cell environment.
The deep-ulraviolet (DUV) resist contamination for low-k organosilicate SiOC:H dielec.ric was investigated. The low-k SiOC:H and SiON films were deposited in an Applied Materials Centura PECVD system. GC-MS analysis s...
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The deep-ulraviolet (DUV) resist contamination for low-k organosilicate SiOC:H dielec.ric was investigated. The low-k SiOC:H and SiON films were deposited in an Applied Materials Centura PECVD system. GC-MS analysis showed a small amount of hydrocarbons on the SiOC:H samples subjected to cleaning. SiON, used as antireflective layers, and SiC capping layers showed maximum-resist poisoning at the interface between capping layer and underlying-dielec.ric stack.
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