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Articles 10261 - 10290 of 12092
Full-Text Articles in Entire DC Network
Task Planner For Simultaneous Fulfillment Of Operational, Geometric And Uncertainty-Reduction Goals, S. A. Hutchinson, A. C. Kak
Task Planner For Simultaneous Fulfillment Of Operational, Geometric And Uncertainty-Reduction Goals, S. A. Hutchinson, A. C. Kak
Department of Electrical and Computer Engineering Technical Reports
Our ultimate goal in robot planning is to develop a planner which can create complete assembly plans given as input a high level description of assembly goals, geometric models of the components of the assembly, and a description of the capabilities of the work cell (including the robot and the sensory system). In this paper, we introduce SPAR, a planning system which reasons about high level operational goals, geometric goals and uncertainty-reduction goals in order to create assembly plans which consist of manipulations as well as sensory operations when appropriate. Operational planning is done using a nonlinear, constraint posting planner. …
Output-Sensitive Hidden Surface Elimination For Rectangles, Mikhail J. Atallah, Michael T. Goodrich
Output-Sensitive Hidden Surface Elimination For Rectangles, Mikhail J. Atallah, Michael T. Goodrich
Department of Computer Science Technical Reports
No abstract provided.
Semi-Automatic Process Decomposition For Non-Shared Memory Machines, Charles Koelbel, Piyush Mehrotra
Semi-Automatic Process Decomposition For Non-Shared Memory Machines, Charles Koelbel, Piyush Mehrotra
Department of Computer Science Technical Reports
No abstract provided.
A Formalism For Describing Data Distribution, Charles Koelbel
A Formalism For Describing Data Distribution, Charles Koelbel
Department of Computer Science Technical Reports
No abstract provided.
Time-Varying Images: The Effect Of Finite Resolution On Uniqueness, Chia-Hoang Lee
Time-Varying Images: The Effect Of Finite Resolution On Uniqueness, Chia-Hoang Lee
Department of Computer Science Technical Reports
No abstract provided.
A User Guide To The Algorithm Mapper: A System For Modeling And Evaluating Parallel Applications/Architecture Pairs, C. E. Houstis, Elias N. Houstis, John R. Rice, S. M. Samartizis, D.L. Alexandrakis
A User Guide To The Algorithm Mapper: A System For Modeling And Evaluating Parallel Applications/Architecture Pairs, C. E. Houstis, Elias N. Houstis, John R. Rice, S. M. Samartizis, D.L. Alexandrakis
Department of Computer Science Technical Reports
No abstract provided.
On-Line Object Feature Extraction For Multispectral Scene Representation, Hassan Ghassemian, David Landgrebe
On-Line Object Feature Extraction For Multispectral Scene Representation, Hassan Ghassemian, David Landgrebe
Department of Electrical and Computer Engineering Technical Reports
This thesis investigates a new on-line unsupervised object-feature extraction method that reduces the complexity and costs associated with the analysis of the multispectral image data and the data transmission, storage, archival and distribution as well. Typically in remote sensing a scene is represented by the spatially disjoint pixel-oriented features. It would appear possible to reduce data redundancy by an on-line unsupervised object-feature extraction process, where combined spatial-spectral object's features, rather than the original pixel-features, are used for multispectral scene representation. The ambiguity in the object detection process can be reduced if the spatial dependencies, which exist among the adjacent pixels, …
Spectral Feature Design In High Dimensional Multispectral Data, Chih-Chien Thomas Chen, David A. Landgrebe
Spectral Feature Design In High Dimensional Multispectral Data, Chih-Chien Thomas Chen, David A. Landgrebe
Department of Electrical and Computer Engineering Technical Reports
The High resolution imaging Spectrometer (HIRIS) is designed to acquire images simultaneously in 192 spectral bands in the 0.4-2,5 μm wavelength region. It will make possible the collection of essentially continuous reflectance spectra at a spectral resolution sufficient to extract significantly enhanced amounts of information from return signals as compared to existing systems. By effectively utilizing these signals, direct identification of the parameters of species can be achieved and their subtle changes can also be observed and measured. The advantages of such high dimensional data come at a cost of increased system and data complexity. For example, since the finer …
Planar Graph Decomposition And All Pairs Shortest Paths, Greg N. Frederickson
Planar Graph Decomposition And All Pairs Shortest Paths, Greg N. Frederickson
Department of Computer Science Technical Reports
No abstract provided.
The Pseiki Report—Version 2. Evidence Accumulation And Flow Of Control In A Hierarchical Spatial Reasoning System, K. M. Andress, A. C. Kak
The Pseiki Report—Version 2. Evidence Accumulation And Flow Of Control In A Hierarchical Spatial Reasoning System, K. M. Andress, A. C. Kak
Department of Electrical and Computer Engineering Technical Reports
A fundamental goal of computer vision is the development of systems capable of carrying out scene interpretation while taking into account all the available knowledge. In this report, we have focused on how the interpretation task may be aided by expected-scene information which, in most cases, would not be in registration with the perceived scene. In this report, we describe PSEIKI, a framework for expectation-driven interpretation of image data. PSEIKI builds abstraction hierarchies in image data using, for cues, supplied abstraction hierarchies in a scene expectation map. Hypothesized abstractions in the image data are geometrically compared with the known abstractions …
Rule-Based Approach To Binocular Stereopsis, S. Tanaka, A. C. Kak
Rule-Based Approach To Binocular Stereopsis, S. Tanaka, A. C. Kak
Department of Electrical and Computer Engineering Technical Reports
This research is motivated by a desire to integrate some of the diverse, yet complimentary, developments that have taken place during the past few years in the area of passive stereo vision. On the one hand, we have approaches based on matching zero-crossings along epipolar lines, and, on the other, people have proposed techniques that match directly higher level percepts, such as line elements and other geometrical forms. Our rule-based program is a modest attempt at integrating these different approaches into a single program. Such integration was made necessary by the fact that no single method by itself appears capable …
Improving Cache Performance By Selective Cache Bypass, Chi-Hung Chi, Henry Dietz
Improving Cache Performance By Selective Cache Bypass, Chi-Hung Chi, Henry Dietz
Department of Electrical and Computer Engineering Technical Reports
In traditional cache-based computers, all memory references are made through cache. However, a significant number of items which are referenced in a program are referenced so infrequently that other cache traffic is certain to “bump” these items from cache before they are referenced again. I n such cases, not only is there no benefit in placing the item in cache, but there is the additional overhead of “bumping” some other item out of cache to make room for this useless cache entry. Where a cache line is larger than a processor word, there is an additional penalty in loading the …
Harmonic Impact Of Rectifiers Served By Unbalanced Three-Phase Sources, Kraig J. Olejniczak
Harmonic Impact Of Rectifiers Served By Unbalanced Three-Phase Sources, Kraig J. Olejniczak
Department of Electrical and Computer Engineering Technical Reports
A converter is a rectifier or inverter which is intended to transfer electrical energy between AC and DC busses. A common industrial converter usually employs the familiar Graetz bridge configuration and usually has a rating in the kilowatt through lower megawatt range. The operation of such a device is nominally in the balanced three-phase mode in which the phase currents are nonsinusoidal. The Fourier series components of these currents, or harmonics, have been studied extensively, but relatively little has been done in the unbalanced operating mode. The principal goal of this research is to examine how unbalance in magnitude and …
Physics And Modeling Of Submicron Devices. Annual Report: August I, 1987 - July 31, 1988, Supriyo Datta, Mark S. Lundstrom, Amitava Das, H. Bob Frohne, Michael J. Mclennan
Physics And Modeling Of Submicron Devices. Annual Report: August I, 1987 - July 31, 1988, Supriyo Datta, Mark S. Lundstrom, Amitava Das, H. Bob Frohne, Michael J. Mclennan
Department of Electrical and Computer Engineering Technical Reports
The work described in this report is directed at understanding quantum transport phenomena in sub-micron heterostructure devices, at developing computational techniques for modeling such devices, and at applying these techniques to develop new device concepts. During the past year we have (l) applied a previously developed collisionless quantum device model (SEQUAL) and Monte Carlo model (DEMON) to the design and study of heterojunction bipolar transistors (Chapter 2); (2) developed a technique for the analysis of arbitrarily shaped quantum devices with elastic scattering (Chapter 3); and (3) developed an approach for incorporating inelastic dissipative processes in quantum transport theory (Chapter 4). …
Analysis Of Image Sequence Data With Applications To Two-Dimensional Echocardiography, C. Henry Chu, Edward J. Delp
Analysis Of Image Sequence Data With Applications To Two-Dimensional Echocardiography, C. Henry Chu, Edward J. Delp
Department of Electrical and Computer Engineering Technical Reports
Digital two-dimensional echocardiography is an ultrasonic imaging technique that is used as an increasingly important noninvasive technique in the comprehensive characterization of the left ventricular structure and function. Quantitative analysis often uses heart wall motion and other shape attributes such as the heart wall thickness, heart chamber area, and the variation of these attributes throughout the cardiac cycle. These analyses require the complete determination of the heart wall boundaries. Poor image quality and large amount of noise makes computer detection of the boundaries difficult. An algorithm to detect both the inner and outer heart wall boundaries is presented. The algorithm …
Pulse-Width Modulation Control Of A Three-Phase Inverter, Shawn M. O'Connor
Pulse-Width Modulation Control Of A Three-Phase Inverter, Shawn M. O'Connor
Department of Electrical and Computer Engineering Technical Reports
The goal of this thesis was to design, construct, and prove operational a three-phase inverter. This inverter was to incorporate pulse-width modulation control and was to function as a classroom demonstration unit. Before constructing the full three- phase inverter, a single-phase inverter was constructed with four Darlingtons. A pulse-width modulation scheme was developed and applied to the single-phase inverter. Upon slight modification of the control scheme, controllable single-phase inverter operation was demonstrated. With this insight gained, a pulse-width modulation scheme was developed for a three-phase inverter. After adding a third set of Darlingtons to the initial four, the pulse-width modulation …
A Generic Algorithm For Transaction Processing During Network Partitioning, Bharat Bhargava, Shirley Browne
A Generic Algorithm For Transaction Processing During Network Partitioning, Bharat Bhargava, Shirley Browne
Department of Computer Science Technical Reports
No abstract provided.
Engineering The Object-Relation Database Model In O-Raid, Bharat Bhargava, Prasun Dewan, Stephen Leung
Engineering The Object-Relation Database Model In O-Raid, Bharat Bhargava, Prasun Dewan, Stephen Leung
Department of Computer Science Technical Reports
No abstract provided.
Topological Numbering Of Features On A Mesh (Cc-88-18), Mikhail J. Atallah, Susanne E. Hambrusch, Lynn E. Tewinkel
Topological Numbering Of Features On A Mesh (Cc-88-18), Mikhail J. Atallah, Susanne E. Hambrusch, Lynn E. Tewinkel
Department of Computer Science Technical Reports
No abstract provided.
Estimating Lower Bounds On Buffer Sizes For A Packet Switch, Douglas E. Comer, Rajendra Yavatkar
Estimating Lower Bounds On Buffer Sizes For A Packet Switch, Douglas E. Comer, Rajendra Yavatkar
Department of Computer Science Technical Reports
No abstract provided.
Summary Of The Activities Of The Purdue Electric Power Center December 1987-June 1988, G. T. Heydt
Summary Of The Activities Of The Purdue Electric Power Center December 1987-June 1988, G. T. Heydt
Department of Electrical and Computer Engineering Technical Reports
No abstract provided.
Extending Static Synchronization Beyond Simd And Vliw, Henry G. Dietz, Thomas Schwederski
Extending Static Synchronization Beyond Simd And Vliw, Henry G. Dietz, Thomas Schwederski
Department of Electrical and Computer Engineering Technical Reports
A key advantage of SIMD (Single Instruction stream, Multiple Data stream) architectures is that synchronization is effected statically at compile-time, hence the execution-time cost of synchronization between “processes” is essentially zero. VLIW (Very Long Instruction Word) machines are successful in large part because they preserve this property while providing more flexibility in terms of what kinds of operations can be parallelized. In this paper, we propose a new kind of architecture —- the “static barrier MIMD” or SBM — which can be viewed as a further generalization of the parallel execution abilities of static synchronization machines. Barrier MIMDs are asynchronous …
Interface Structures I: Abstract Structures For Computing About Physical Objects, Chandrajit Bajaj, Dayne Dyksen, Christoph M. Hoffmann, Elias N. Houstis, John T. Korb
Interface Structures I: Abstract Structures For Computing About Physical Objects, Chandrajit Bajaj, Dayne Dyksen, Christoph M. Hoffmann, Elias N. Houstis, John T. Korb
Department of Computer Science Technical Reports
No abstract provided.
Machine Learning: A Critique Of Research Efforts And Suggested Research Strategy, William S. Davis, David B. Murrell
Machine Learning: A Critique Of Research Efforts And Suggested Research Strategy, William S. Davis, David B. Murrell
Department of Computer Science Technical Reports
No abstract provided.
Robust Replication Control Using Primary Copy Method, Niraj K. Sharma
Robust Replication Control Using Primary Copy Method, Niraj K. Sharma
Department of Computer Science Technical Reports
No abstract provided.
The Problem Of Accuracy And Robustness In Geometric Computation, Christoph M. Hoffmann
The Problem Of Accuracy And Robustness In Geometric Computation, Christoph M. Hoffmann
Department of Computer Science Technical Reports
No abstract provided.
Applying Algebraic Geometry To Surface Intersection Evaluation, Christoph M. Hoffmann
Applying Algebraic Geometry To Surface Intersection Evaluation, Christoph M. Hoffmann
Department of Computer Science Technical Reports
No abstract provided.
Locating Distributed Information, Craig E. Wills
Locating Distributed Information, Craig E. Wills
Department of Computer Science Technical Reports
No abstract provided.
Service Execution In A Distributed Environment (Thesis), Craig E. Wills
Service Execution In A Distributed Environment (Thesis), Craig E. Wills
Department of Computer Science Technical Reports
No abstract provided.
Statistical Classifier Design And Evaluation, Keinosuke Fukunaga, Raymond Reynolds Hayes
Statistical Classifier Design And Evaluation, Keinosuke Fukunaga, Raymond Reynolds Hayes
Department of Electrical and Computer Engineering Technical Reports
This thesis is concerned with the design and evaluation of statistical classifiers. This problem has an optimal solution with a priori knowledge of the underlying probability distributions. Here, we examine the expected performance of parametric classifiers designed from a finite set of training samples and tested under various conditions. By investigating the statistical properties of the performance bias when tested on the true distributions, we have isolated the effects of the individual design components (i.e., the number of training samples, the dimensionality, and the parameters of the underlying distributions). These results have allowed us to establish a firm theoretical foundation …