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Ultimate Characterizations Of The Burst Response Of An Interval Searching Algorithm, Philippe Jacquet, Wojciech Szpankowski Sep 1987

Ultimate Characterizations Of The Burst Response Of An Interval Searching Algorithm, Philippe Jacquet, Wojciech Szpankowski

Department of Computer Science Technical Reports

No abstract provided.


Partitioning The Process Of Interaction: An Implementation, Balachander Krishnamurthy Sep 1987

Partitioning The Process Of Interaction: An Implementation, Balachander Krishnamurthy

Department of Computer Science Technical Reports

No abstract provided.


Partitioning The Process Of Interaction: An Abstract View, Balachander Krishnamurthy Sep 1987

Partitioning The Process Of Interaction: An Abstract View, Balachander Krishnamurthy

Department of Computer Science Technical Reports

No abstract provided.


Shells In An Interactive System, Balachander Krishnamurthy Sep 1987

Shells In An Interactive System, Balachander Krishnamurthy

Department of Computer Science Technical Reports

No abstract provided.


Raid Programmers's Manual, Bharat Bhargava Sep 1987

Raid Programmers's Manual, Bharat Bhargava

Department of Computer Science Technical Reports

No abstract provided.


Supercomputing About Physical Objects, John R. Rice Sep 1987

Supercomputing About Physical Objects, John R. Rice

Department of Computer Science Technical Reports

No abstract provided.


Basic Studies Of Iii-Iv High Efficiency Cell Components, Mark S. Lundstrom, M. R. Melloch, R. F. Pierret, Paul D. Demoulin, D. P. Rancour, C. S. Kyono Sep 1987

Basic Studies Of Iii-Iv High Efficiency Cell Components, Mark S. Lundstrom, M. R. Melloch, R. F. Pierret, Paul D. Demoulin, D. P. Rancour, C. S. Kyono

Department of Electrical and Computer Engineering Technical Reports

The objective of the project is to raise the understanding of dark current mechanisms in GaAs-related solar cells to a level comparable to that of silicon cells. Motivation for this work arises from the observation that much of the progress in crystalline silicon cell performance has occurred as a result of a very deep knowledge of the physics controlling the cell’s dark current. Based on this knowledge, new cell structures evolved to suppress dominant dark current mechanisms. A comparable level of knowledge of GaAs cell device physics does not yet exist, but will be essential if cell performance near the …


Independent Checkpointing And Concurrent Rollback For Recovery In Distributed System—An Optimistic Approach, Bharat Bhargava, Shy-Renn Lian Aug 1987

Independent Checkpointing And Concurrent Rollback For Recovery In Distributed System—An Optimistic Approach, Bharat Bhargava, Shy-Renn Lian

Department of Computer Science Technical Reports

No abstract provided.


A Characterization Of Digital Search Trees From The Average Complexity Viewpoint, Wojciech Szpankowski Jul 1987

A Characterization Of Digital Search Trees From The Average Complexity Viewpoint, Wojciech Szpankowski

Department of Computer Science Technical Reports

No abstract provided.


Computing About Physical Objects, Chanderjit Bajaj, Christoph M. Hoffmann, Elias N. Houstis, John T. Korb, John R. Rice Jul 1987

Computing About Physical Objects, Chanderjit Bajaj, Christoph M. Hoffmann, Elias N. Houstis, John T. Korb, John R. Rice

Department of Computer Science Technical Reports

No abstract provided.


Algorithms And Data Structures For An Expanded Family Of Matroid Intersection Problems, Greg N. Frederickson, Mandayam A. Srinivas Jul 1987

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 Jul 1987

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 Jun 1987

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 Jun 1987

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 Jun 1987

Concurrent Checkpointing And Recovery In Distributed Systems, Pei-Jyun Leu, Bharat Bhargava

Department of Computer Science Technical Reports

No abstract provided.


The Parse Programming Paradigm. Part I: Software Development Methodology. Part Ii: Software Development Support Tools, T. L. Casavant, Henry G. Dietz, P. C.-Y. Sheu, H. J. Siegel Jun 1987

The Parse Programming Paradigm. Part I: Software Development Methodology. Part Ii: Software Development Support Tools, T. L. Casavant, Henry G. Dietz, P. C.-Y. Sheu, H. J. Siegel

Department of Electrical and Computer Engineering Technical Reports

The programming methodology of PARSE (parallel software environment), a software environment being developed for reconfigurable non-shared memory parallel computers, is described. This environment will consist of an integrated collection of language interfaces, automatic and semi-automatic debugging and analysis tools, and operating system —all of which are made more flexible by the use of a knowledge-based implementation for the tools that make up PARSE. The programming paradigm supports the user freely choosing among three basic approaches /abstractions for programming a parallel machine: logic-based descriptive, sequential-control procedural, and parallel-control procedural programming. All of these result in efficient parallel execution. The current work …


A Model For Adaptable Concurrency Control, Bharat Bhargava, John Riedl May 1987

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 May 1987

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 May 1987

An M/Sm/1 View Of A Token Ring Queue, Vernon J. Rego, Wojciech Szpankowski

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 May 1987

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.


On The Variance Of The External Path Length In A Binary Digital Trie, Peter Kirschenhofer, Helmut Prodinger, Wojciech Szpankowski May 1987

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.


Efficient Parallel Algorithms And Vlsi Architectures For Manipulator Jacobian Computation, T. B. Yeung, C. S. G. Lee May 1987

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 …


The Harmonic Impact Of Rectifiers Serviced By Scott And Leblanc Connected Transformers, William P. Butler May 1987

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 …


Triangulating A Polygon In Parallel, Michael T. Goodrich May 1987

Triangulating A Polygon In Parallel, Michael T. Goodrich

Department of Computer Science Technical Reports

No abstract provided.


On An Alternative Sum Useful In The Analysis Of Some Data Structures, Wojciech Szpankowski Apr 1987

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 Apr 1987

Decompositions Of Objects Bounded By Algebraic Curves, Chanderjit Bajaj, Myung-Soo Kim

Department of Computer Science Technical Reports

No abstract provided.


Contour Tracking With Force Feedback, Shaheen Ahmad Apr 1987

Contour Tracking With Force Feedback, Shaheen Ahmad

Department of Electrical and Computer Engineering Technical Reports

In this paper we describe an algorithm to allow a manipulator to track a complex contour without having to teach or program any points on the contour. This is an important problem in many manufacturing situations, when a robot tool such as a deburring tool must follow a complex work piece contour. La such instances it is tedious to teach or program the manipulator to follow such contour additionally calibration of the manipulator or the workpart may be difficult. The algorithm we present has been experimentally demonstrated utilizing a force sensor, a five degree of freedom manipulator and a 68000 …


Distributed Systems Based Upon A Functional Communication Model With A Timed Token Protocol, Dan C. Marinescu Mar 1987

Distributed Systems Based Upon A Functional Communication Model With A Timed Token Protocol, Dan C. Marinescu

Department of Computer Science Technical Reports

No abstract provided.


Applying Ai Techniques To Program Optimization For Parallel Computers, Ko-Yang Wang, Dennis Gannon Mar 1987

Applying Ai Techniques To Program Optimization For Parallel Computers, Ko-Yang Wang, Dennis Gannon

Department of Computer Science Technical Reports

No abstract provided.


50 Years Of The Joint Highway Research Project (Jhrp), Harold L. Michael Mar 1987

50 Years Of The Joint Highway Research Project (Jhrp), Harold L. Michael

Purdue Road School

No abstract provided.