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Articles 7411 - 7440 of 8614
Full-Text Articles in Entire DC Network
Algorithms And Data Structures For An Expanded Family Of Matroid Intersection Problems, Greg N. Frederickson, Mandayam A. Srinivas
Algorithms And Data Structures For An Expanded Family Of Matroid Intersection Problems, Greg N. Frederickson, Mandayam A. Srinivas
Department of Computer Science Technical Reports
No abstract provided.
Efficient Scheduling Algorithms For Robot Inverse Dynamics Computation On A Multiprocessor System, C. L. Chen, C. S. G. Lee, S. H. E. Hou
Efficient Scheduling Algorithms For Robot Inverse Dynamics Computation On A Multiprocessor System, C. L. Chen, C. S. G. Lee, S. H. E. Hou
Department of Electrical and Computer Engineering Technical Reports
Robot manipulators are highly nonlinear systems and their motion control requires the computation of generalized forces/torques to drive all the joint motors at an adequate rate. This paper presents efficient scheduling algorithms for computing the robot inverse dynamics on a multiprocessor system. The problem of scheduling the inverse dynamics computation consisting of m computational modules to be executed on a multiprocessor system consisting of p identical homogeneous processors to achieve a minimum-scheduled length is known to be NP-complete. In order to achieve the minimum computation time, the Newton-Euler equations of motion are expressed in the homogeneous linear recurrence form which …
An Expert System Controlling An Adaptable Distributed Data Base System, Bharat Bhargava, John Riedl, Detlef M. Weber
An Expert System Controlling An Adaptable Distributed Data Base System, Bharat Bhargava, John Riedl, Detlef M. Weber
Department of Computer Science Technical Reports
No abstract provided.
An Experimental Analysis Of Replicated Copy Control During Site Failure And Recovery, Bharat Bhargava, Paul Noll, Donna Sabo
An Experimental Analysis Of Replicated Copy Control During Site Failure And Recovery, Bharat Bhargava, Paul Noll, Donna Sabo
Department of Computer Science Technical Reports
No abstract provided.
Concurrent Checkpointing And Recovery In Distributed Systems, Pei-Jyun Leu, Bharat Bhargava
Concurrent Checkpointing And Recovery In Distributed Systems, Pei-Jyun Leu, Bharat Bhargava
Department of Computer Science Technical Reports
No abstract provided.
Piplined Iterative Methods For Shared Memory Machines, John P. Bonomo, Wayne R. Syksen
Piplined Iterative Methods For Shared Memory Machines, John P. Bonomo, Wayne R. Syksen
Department of Computer Science Technical Reports
No abstract provided.
Optimal Burnable Absorber Assignment For Pwr Core Reload Design, Timothy R. Niggel
Optimal Burnable Absorber Assignment For Pwr Core Reload Design, Timothy R. Niggel
Department of Electrical and Computer Engineering Technical Reports
A new method has been developed to assign burnable poison loadings in the optimization of Pressurized Water Reactor core reload design. The method utilizes successive linear programming to determine the desired burnable poison loading. The optimum loading is selected after the evaluation of all candidate loadings close to the desired loading. The design method was implemented as a sub-program in the nodal core analysis code SIMULATE. The technique was applied to re-design Commonwealth Edison's Zion Unit-1 cycles 9 and 10. Significant improvements were achieved in cycle length, number of BP rods required, and power peaking. The present work completely automates …
Designing Networks With Compact Routing Tables Available In A Journal, Greg N. Frederickson, Ravi Janardan
Designing Networks With Compact Routing Tables Available In A Journal, Greg N. Frederickson, Ravi Janardan
Department of Computer Science Technical Reports
No abstract provided.
A Model For Adaptable Concurrency Control, Bharat Bhargava, John Riedl
A Model For Adaptable Concurrency Control, Bharat Bhargava, John Riedl
Department of Computer Science Technical Reports
No abstract provided.
Reachability Graphs And Invariants For Stochastic High Level Petri Nets, Jing Dong, Dan C. Marinescu, Chuang Lin
Reachability Graphs And Invariants For Stochastic High Level Petri Nets, Jing Dong, Dan C. Marinescu, Chuang Lin
Department of Computer Science Technical Reports
No abstract provided.
An M/Sm/1 View Of A Token Ring Queue, Vernon J. Rego, Wojciech Szpankowski
An M/Sm/1 View Of A Token Ring Queue, Vernon J. Rego, Wojciech Szpankowski
Department of Computer Science Technical Reports
No abstract provided.
Algebraic Curves, Christoph M. Hoffmann
Algebraic Curves, Christoph M. Hoffmann
Department of Computer Science Technical Reports
No abstract provided.
Non Homogeneous Parallel Computations I. Synchronization Analysis Of Parallel Algorithms, Dan C. Marinescu, John R. Rice
Non Homogeneous Parallel Computations I. Synchronization Analysis Of Parallel Algorithms, Dan C. Marinescu, John R. Rice
Department of Computer Science Technical Reports
No abstract provided.
A Face Area Evaluation Algorithm For Solids In Csg Representation, Muh-Cherng Wu, Chanderjit Bajaj, C. R. Liu
A Face Area Evaluation Algorithm For Solids In Csg Representation, Muh-Cherng Wu, Chanderjit Bajaj, C. R. Liu
Department of Computer Science Technical Reports
No abstract provided.
On The Variance Of The External Path Length In A Binary Digital Trie, Peter Kirschenhofer, Helmut Prodinger, Wojciech Szpankowski
On The Variance Of The External Path Length In A Binary Digital Trie, Peter Kirschenhofer, Helmut Prodinger, Wojciech Szpankowski
Department of Computer Science Technical Reports
No abstract provided.
Linear And Nonlinear Programming Methods For Dispatching Power In An Integrated Ac-Dc System, C. N. Lu, S. S. Chen, C. M. Ong
Linear And Nonlinear Programming Methods For Dispatching Power In An Integrated Ac-Dc System, C. N. Lu, S. S. Chen, C. M. Ong
Department of Electrical and Computer Engineering Technical Reports
As the number of dc systems increases, it is natural to ask what other roles, aside that of bulk power transfer, that these systems could play in the operation of modern power systems. The objective of this research is to develop formulations and methods of solution to coordinate the dispatch of powers in an integrated ac-dc power system for purposes of minimizing transmission losses and production costs. In Section I we present an LP formulation and method of solution to minimize the ac and dc network transmission losses by coordinating the traditional reactive sources with the dispatch of the dc …
Efficient Parallel Algorithms And Vlsi Architectures For Manipulator Jacobian Computation, T. B. Yeung, C. S. G. Lee
Efficient Parallel Algorithms And Vlsi Architectures For Manipulator Jacobian Computation, T. B. Yeung, C. S. G. Lee
Department of Electrical and Computer Engineering Technical Reports
Real-time computations of manipulator Jacobian are examined for executing on uniprocessor computers, parallel computers, and VLSI pipelines. The characteristics of the Jacobian equations are found to be in the form of the first-order linear recurrence. The time lower bound of computing the first-order linear recurrence, and hence the Jacobian, is of order O(N) on uniprocessor computers, and of order O(log2N) on parallel SIMD computers, where TV is the number of degrees-of-freedom of the manipulator. The Generalized-^ method, which achieves the time lower bound on uniprocessor computers, is derived to compute the Jacobian at any desired reference coordinate frame A; from …
A Non-Iterative Power Flow Study Technique Based On The Method Of Minimal Least Squares, Michael Carl Merow
A Non-Iterative Power Flow Study Technique Based On The Method Of Minimal Least Squares, Michael Carl Merow
Department of Electrical and Computer Engineering Technical Reports
A load flow study is used to determine the state variables of a power system. Load flow studies are essential for analyzing the effects of future load growth, for planning new facilities, and for the normal daily operation of the power system. The goal of this research is to examine an alternative load flow solution to be used in connection with the power system’s data acquisition system. Three standard linear power flow models are proposed which form a redundant set of linear equations. The equations make use of system measurements to help overcome errors introduced in the linear models. The …
The Harmonic Impact Of Rectifiers Serviced By Scott And Leblanc Connected Transformers, William P. Butler
The Harmonic Impact Of Rectifiers Serviced By Scott And Leblanc Connected Transformers, William P. Butler
Department of Electrical and Computer Engineering Technical Reports
Conventional three-phase, six-pulse rectifiers produce harmonic currents which propagate into the ac power system from which they are supplied. A two-phase, four-pulse rectifier can be operated such that there are no ac harmonic currents generated. In this connection, although there is no harmonic impact, the three-phase load current is imbalanced. The operation of a line-commutated two-phase, four-pulse rectifer [rectifier] served by the Scott and LeBlanc three-phase to two-phase transformer connections is simulated using a digital computer program in this thesis. Several different methods of rectification for a two-phase bridge are simulated and their current waveforms analyzed for harmonic content and …
Steady State Analysis Of A Brushless Dc Motor With Half Bridge Inverter, Todd J. Kazmirski
Steady State Analysis Of A Brushless Dc Motor With Half Bridge Inverter, Todd J. Kazmirski
Department of Electrical and Computer Engineering Technical Reports
Brushless do motors have received significant attention in the fractional horsepower motor industry in recent years. The inverter drive used with this system has traditionally been of the full bridge configuration. However, it is possible to use a half bridge inverter to drive the machine. In this paper a method to analyze the brushless dc motor with half bridge inverter is developed. The method is integrated into a digital computer program to simulate the steady state response of the system. The program allows both the inverter conduction angle and the inverter firing angle to be changed. This provides an efficient …
Methods For Multisource Data Analysis In Remote Sensing, Jon Atli Bensdiktsson, Philip H. Swain
Methods For Multisource Data Analysis In Remote Sensing, Jon Atli Bensdiktsson, Philip H. Swain
Department of Electrical and Computer Engineering Technical Reports
Methods for classifying remotely sensed data from multiple data sources are considered. Special interest is in general methods for multisource classification and three such approaches are considered: Dempster-Shafer theory, fuzzy set theory and statistical multisource analysis. Statistical multisource analysis is investigated further. To apply this method successfully it is necessary to characterize the "reliability" of each data source. Separability measures and classification accuracy are used to measure the reliability. These reliability measures are then associated with reliability factors included in the statistical multisource analysis. Experimental results are given for the application of statistical multisource analysis to multispectral scanner data where …
Triangulating A Polygon In Parallel, Michael T. Goodrich
Triangulating A Polygon In Parallel, Michael T. Goodrich
Department of Computer Science Technical Reports
No abstract provided.
A Fast Grid Adaption Scheme For Elliptic Partial Differential Equations, Calvin J. Ribbens
A Fast Grid Adaption Scheme For Elliptic Partial Differential Equations, Calvin J. Ribbens
Department of Computer Science Technical Reports
No abstract provided.
On An Alternative Sum Useful In The Analysis Of Some Data Structures, Wojciech Szpankowski
On An Alternative Sum Useful In The Analysis Of Some Data Structures, Wojciech Szpankowski
Department of Computer Science Technical Reports
No abstract provided.
Decompositions Of Objects Bounded By Algebraic Curves, Chanderjit Bajaj, Myung-Soo Kim
Decompositions Of Objects Bounded By Algebraic Curves, Chanderjit Bajaj, Myung-Soo Kim
Department of Computer Science Technical Reports
No abstract provided.
Three Dimensional Graphics Software In Interactive Ellpack, John P. Bonomo, Wayne R. Dyksen
Three Dimensional Graphics Software In Interactive Ellpack, John P. Bonomo, Wayne R. Dyksen
Department of Computer Science Technical Reports
No abstract provided.
A Computational Framework For Constructing Adaptive Grid Domain Mappings, Calvin J. Ribbens
A Computational Framework For Constructing Adaptive Grid Domain Mappings, Calvin J. Ribbens
Department of Computer Science Technical Reports
No abstract provided.
A Comparison Of Two Evidential Reasoning Schemes, Sunny Lee
A Comparison Of Two Evidential Reasoning Schemes, Sunny Lee
Department of Computer Science Technical Reports
No abstract provided.
Planar Linear Arrangements Of Outerplanar Graphs, Greg N. Frederickson, Susanne E. Hambrusch
Planar Linear Arrangements Of Outerplanar Graphs, Greg N. Frederickson, Susanne E. Hambrusch
Department of Computer Science Technical Reports
No abstract provided.
Mathematics For Visual Guidance Of Robots, Yiucheung Shiu, Shaheen Ahmad, Richard P. Paul
Mathematics For Visual Guidance Of Robots, Yiucheung Shiu, Shaheen Ahmad, Richard P. Paul
Department of Electrical and Computer Engineering Technical Reports
Vision can be used to position a robot relative to a known object or a known environment in 3D. If the object has enough feature points, one view is sufficient for determining the relative position between the object and the camera, otherwise, multiple views are required. We discuss the mathematics of viewpoint determination, using a combination of calibration matrix decomposition and space resection. The combined method has low noise sensitivity and does not require knowledge of camera parameters. If the object does not have enough features, multiple views are required to determine its position and orientation; an example of this …