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Articles 7261 - 7290 of 8612
Full-Text Articles in Entire DC Network
Simplification Of Manipulator Dynamic Model For Nonlinear Decoupled Control, J. W. Jeon, C S. G. Lee
Simplification Of Manipulator Dynamic Model For Nonlinear Decoupled Control, J. W. Jeon, C S. G. Lee
Department of Electrical and Computer Engineering Technical Reports
This paper presents the development of simplified manipulator dynamic models which satisfy the desired steady-state error specification in the joint-variable space or in the Cartesian space under a nonlinear decoupled controller. The formulae which relate the tracking errors of joint variables in the joint-variable space or the manipulator hand in the Cartesian space to the dynamic modeling errors are first developed. Using these formulae, we derive the maximum error tolerance for each dynamic coefficient of the equations of motion. Then each simplified dynamic coefficient of the equations of motion can be expressed as a linear combination of the product terms …
A Lower Bound On Embedding Tree Machines With Balanced Processor Utilization, Ajay K. Gupta, Susanne E. Hambrusch
A Lower Bound On Embedding Tree Machines With Balanced Processor Utilization, Ajay K. Gupta, Susanne E. Hambrusch
Department of Computer Science Technical Reports
No abstract provided.
Efficient Algorithms For Hybrid Data/Voice Transmissions, Andrzej Kusiuk, Wojciech Szpankowski
Efficient Algorithms For Hybrid Data/Voice Transmissions, Andrzej Kusiuk, Wojciech Szpankowski
Department of Computer Science Technical Reports
No abstract provided.
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.
Analysis Of A Two Level Asynchronous Algorithm For Pdes, John R. Rice, Dan C. Marineseu
Analysis Of A Two Level Asynchronous Algorithm For Pdes, John R. Rice, Dan C. Marineseu
Department of Computer Science Technical Reports
No abstract provided.
An Optimal Parallel Algorithm For Preemptive Job Scheduling That Minimizes Maximum Lateness, Susan Rodger
An Optimal Parallel Algorithm For Preemptive Job Scheduling That Minimizes Maximum Lateness, Susan Rodger
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.
Symbolic Analysis Of Large-Scale Networks, M. M. Hassoun, P. M. Lin
Symbolic Analysis Of Large-Scale Networks, M. M. Hassoun, P. M. Lin
Department of Electrical and Computer Engineering Technical Reports
A new approach to the problem of symbolic circuit analysis of large-scale circuits is presented in this report. The methodology has been implemented in a computer program called SCAPP (Symbolic Circuit Analysis Program with Partitioning). The method solves the problem by utilizing a hierarchical network approach and the sequence of expressions concept rather than a topological approach and the single expression idea which have dominated symbolic analysis in the past. The method employs further modifications to the modified nodal analysis (MNA) technique by allowing ideal opamps in the matrix formulation process and introducing the reduced modified analysis matrix (RMNA). The …
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 …
Impedance Measurements Of Underground Cable Systems, Robert N. Bruce
Impedance Measurements Of Underground Cable Systems, Robert N. Bruce
Department of Electrical and Computer Engineering Technical Reports
This paper documents a series of experimental impedance measurements made on underground residential distribution (URD) power components which included 15 KV class power cables, elbow connectors and a padmount transformer. The measurements were performed at high frequency, i.e. the MHz frequency region. The purpose was to study how the impedance of these devices behaves at high frequencies. Two port transmission parameters and network analysis were used to study the characteristics of these types of systems at these high frequencies.
Experimenal Evaluation Of Concurrent Checkpointing And Rollback-Recovery Algorithms, Bharat Bhargava, Pei-Jyun Leu, Shy-Renn Lian
Experimenal Evaluation Of Concurrent Checkpointing And Rollback-Recovery Algorithms, Bharat Bhargava, Pei-Jyun Leu, Shy-Renn Lian
Department of Computer Science Technical Reports
No abstract provided.
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.
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 …
Analysis And Modeling Of A Single-Phased Bifilar-Wound Brushless Dg Motor, Jeffrey S. Meyer
Analysis And Modeling Of A Single-Phased Bifilar-Wound Brushless Dg Motor, Jeffrey S. Meyer
Department of Electrical and Computer Engineering Technical Reports
A single-phase brushless dc motor utilizing a bifilar stator winding and having asymmetrical stator pole faces is investigated. The form of the permanent-magnet component of the stator winding flux linkage is analyzed considering the asymmetry of the stator pole faces. Equations describing the electromechanical dynamics of the motor are then derived along with an expression for the electromagnetic torque. The requirements of the dc-to-ac inverter which drives the motor are determined. Using the expression for electromagnetic torque and inverter characteristics, the form of the so-called static electromagnetic torque is analyzed. The so-called cogging torque is established, and in conjunction with …
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 …
Shape Recognition: A Landmark-Based Approach, Nirwan Ansari, Edward J. Delp
Shape Recognition: A Landmark-Based Approach, Nirwan Ansari, Edward J. Delp
Department of Electrical and Computer Engineering Technical Reports
Shape recognition has applications in computer vision tasks such as industrial automated inspection and automatic target recognition. When objects are occluded, many recognition methods that use global information will fail. To recognize partially occluded objects, we represent each object by a Set of landmarks. The landmarks of an object are points of interest which have important shape attributes and are usually obtained from the object boundary. In this study, we use high curvature points along an object boundary as the landmarks of the object. Given a scene consisting of partially occluded objects, the hypothesis of a model object in the …
Flows: Performance Guarantees In Best Effort Delivery Systems, Douglas E. Comer, Rajendra Yavatkar
Flows: Performance Guarantees In Best Effort Delivery Systems, Douglas E. Comer, Rajendra Yavatkar
Department of Computer Science Technical Reports
No abstract provided.
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.
On The Maximum Queue Length With Applications To Data Structures: A Simple But Yet Asymptotically Exact Approach, Wojciech Szpankowski
On The Maximum Queue Length With Applications To Data Structures: A Simple But Yet Asymptotically Exact Approach, Wojciech Szpankowski
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.
Seth: A Quorum-Based Replicated Database System For Experimentation With Failures, Bharat Bhargava, Abdelsalam Helal, Jagannathan Srinivasan
Seth: A Quorum-Based Replicated Database System For Experimentation With Failures, Bharat Bhargava, Abdelsalam Helal, Jagannathan Srinivasan
Department of Computer Science Technical Reports
No abstract provided.
Three Experiments In Reliable Transaction Processing In Raid, Bharat Bhargava, Fady Lamaa, Pei-Jyun Leu, John Riedl
Three Experiments In Reliable Transaction Processing In Raid, Bharat Bhargava, Fady Lamaa, Pei-Jyun Leu, John Riedl
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.
(Probably) Optimal Solution To Some Problems Not Only On Graphs, Wojciech Szpankowski
(Probably) Optimal Solution To Some Problems Not Only On Graphs, Wojciech Szpankowski
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.