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A Paradigm For Concurrency Control In Heterogeneous Distributed Database Systems, Weimin Du, Ahmed K. Elmagarmid Jul 1989

A Paradigm For Concurrency Control In Heterogeneous Distributed Database Systems, Weimin Du, Ahmed K. Elmagarmid

Department of Computer Science Technical Reports

No abstract provided.


Efficient Implementation Of Modularity In Raid, Charles Koelbel, Fady Lamaa, Bharat Bhargava Jul 1989

Efficient Implementation Of Modularity In Raid, Charles Koelbel, Fady Lamaa, Bharat Bhargava

Department of Computer Science Technical Reports

No abstract provided.


Communication In The Raid Distributed Database System, Bharat Bhargava, Enrique Mafla, John Riedl Jul 1989

Communication In The Raid Distributed Database System, Bharat Bhargava, Enrique Mafla, John Riedl

Department of Computer Science Technical Reports

No abstract provided.


Communication-Based Recovery In Replicated Databases, Bharat Bhargava, Shirley Browne Jul 1989

Communication-Based Recovery In Replicated Databases, Bharat Bhargava, Shirley Browne

Department of Computer Science Technical Reports

No abstract provided.


Parallel Asynchronous Connected Components In A Mesh, Susanne E. Hambrusch, Michael Luby Jul 1989

Parallel Asynchronous Connected Components In A Mesh, Susanne E. Hambrusch, Michael Luby

Department of Computer Science Technical Reports

No abstract provided.


Control Of Dynamic Systems Via Neural Networks, Stanislaw H. Zak, S. Mehdi Madani-Esfahani, Stefen Hui Jul 1989

Control Of Dynamic Systems Via Neural Networks, Stanislaw H. Zak, S. Mehdi Madani-Esfahani, Stefen Hui

Department of Electrical and Computer Engineering Technical Reports

This report is devoted to the problem of controlling a class of linear time-invariant dynamic systems via controllers based on additive neural network models. In particular, the tracking and stabilization problems are considered. First, we show how to transform the problem of tracking a reference signal by a control system into the stabilization problem. Then, some concepts from the variable structure control theory are utilized to construct stabilizing controllers. In order to facilitate the stability analysis of the closed-loop systems we employ a special state space transformation. This transformation allows us also to reveal connections between the proposed controllers and …


Performability Evaluation Of Gracefully Degradable Systems, Christoph W. Lindemann Jun 1989

Performability Evaluation Of Gracefully Degradable Systems, Christoph W. Lindemann

Department of Computer Science Technical Reports

No abstract provided.


Adaptable Recovery Using Dynamic Quorum Assignments, Bharat Bhargava, Shirley Browne Jun 1989

Adaptable Recovery Using Dynamic Quorum Assignments, Bharat Bhargava, Shirley Browne

Department of Computer Science Technical Reports

No abstract provided.


Dap2d: A Two-Dimensional Device Simulation Tool For Silicon Bipolar Transistors, J. L. Egley, J. L. Gray Jun 1989

Dap2d: A Two-Dimensional Device Simulation Tool For Silicon Bipolar Transistors, J. L. Egley, J. L. Gray

Department of Electrical and Computer Engineering Technical Reports

The purpose of this document is to serve as the final report for work performed for Delco Electronics for the period January 1, 1986 through May 15, 1989. A computer program, SCAP2D (Solar Cell Analysis Program in 2- Dimensions) has been successfully converted to enable the simulation of bipolar transistors, including Delco’s thin-epi transistor. This code will be referred to as DAP 2D (Device Analysis Program in 2-Dimensions). Complete source code of DAP 2D is being released to Delco Electronics. This report is organized as follows. Chapter 2 provides a review of the numerical device modeling and discusses code enhancements …


Self-Organizing Neural Network For Optimum Supervised Learning, Manoel Fernando Tenorio, Wei-Tsih Lee Jun 1989

Self-Organizing Neural Network For Optimum Supervised Learning, Manoel Fernando Tenorio, Wei-Tsih Lee

Department of Electrical and Computer Engineering Technical Reports

This work introduces a new algorithm called the Self-Organizing Neural Network (SONN), and demonstrates its use in a system identification task. The algorithm constructs a network, chooses the neuron functions, and adjusts the weights. Here, it is compared to the Back-Propagation algorithm in the identification of the chaotic time series. The results show that SONN constructs a simpler, more accurate model, requiring less training data and epochs. The algorithm can also be applied as a classifier.


Supporting Value Dependency For Nested Transactions In Interbase, Ahmed K. Elmagarmid, Weimin Du May 1989

Supporting Value Dependency For Nested Transactions In Interbase, Ahmed K. Elmagarmid, Weimin Du

Department of Computer Science Technical Reports

No abstract provided.


A Virtual Memory Operating System For A Distributed Workstation Environment, James Griffioen May 1989

A Virtual Memory Operating System For A Distributed Workstation Environment, James Griffioen

Department of Computer Science Technical Reports

No abstract provided.


Constructing Trees In Parallel, Mikhail J. Atallah, S. R. Kosaraju, L. L. Larmore, G. L. Miller May 1989

Constructing Trees In Parallel, Mikhail J. Atallah, S. R. Kosaraju, L. L. Larmore, G. L. Miller

Department of Computer Science Technical Reports

No abstract provided.


Vision-Guided Mobile Robot Navigation, C. Lopez-Abadia, A. C. Kak May 1989

Vision-Guided Mobile Robot Navigation, C. Lopez-Abadia, A. C. Kak

Department of Electrical and Computer Engineering Technical Reports

This report discusses the use of vision feedback for autonomous navigation by a mobile robot in indoor environments. In particular, we have discussed in detail the issues of camera calibration and how binocular and monocular vision may be utilized for self-location by the robot. A noteworthy feature of monocular vision is that the camera image is compared with a CAD model of the interior of the hallways using the PSEIKI reasoning system; this reasoning system allows the comparison to take place at different levels of geometric detail.


Finite Memory Recursive Solutions In Stochastic Models: Equilibrium And Transient Analysis, G. Rama Murthy, Edward J. Coyle May 1989

Finite Memory Recursive Solutions In Stochastic Models: Equilibrium And Transient Analysis, G. Rama Murthy, Edward J. Coyle

Department of Electrical and Computer Engineering Technical Reports

G/M/1 and M/G/1-type Markov processes provide natural models for widely differing stochastic phenomena. Efficient recursive solutions for the equilibrium and transient analysis of these processes are therefore of considerable interest. In this direction, a new class of recursive solutions are proposed for the analysis of M/G/l and G/M/l type processes. In this report, the notion of when a process is LEDI-complete, which means it has complete Level Entrance Direction Information, is introduced for G/M/1-type Markov processes. This notion leads to a new class of recursive solutions, called finite-memory recursive solutions, for the equilibrium probabilities of a class of G/M/ 1-type …


Towards Computable Stability Criteria For Some Multidimensional Stochastic Processes Arising In Queueing Models, Wojciech Szpankowski Apr 1989

Towards Computable Stability Criteria For Some Multidimensional Stochastic Processes Arising In Queueing Models, Wojciech Szpankowski

Department of Computer Science Technical Reports

No abstract provided.


Approximate Delay Analysis Of Transaction Oriented Communication In A Distributed System, Dan C. Marinescu Mar 1989

Approximate Delay Analysis Of Transaction Oriented Communication In A Distributed System, Dan C. Marinescu

Department of Computer Science Technical Reports

No abstract provided.


Benchmarking Of Mimd Hardware On Subdomain Splitting Elliptic Pde Solvers., Elias N. Houstis, John R. Rice, E. A. Vavalis Mar 1989

Benchmarking Of Mimd Hardware On Subdomain Splitting Elliptic Pde Solvers., Elias N. Houstis, John R. Rice, E. A. Vavalis

Department of Computer Science Technical Reports

No abstract provided.


Bituminous Quality Assurance Status Report, Ronald P. Walker Mar 1989

Bituminous Quality Assurance Status Report, Ronald P. Walker

Purdue Road School

No abstract provided.


Attracting Students To A Professional Career In Transportation Engineering, Harold L. Michael Mar 1989

Attracting Students To A Professional Career In Transportation Engineering, Harold L. Michael

Purdue Road School

No abstract provided.


The Application Of Value Engineering To Highway Projects And Programs, Bruce A. Lind Mar 1989

The Application Of Value Engineering To Highway Projects And Programs, Bruce A. Lind

Purdue Road School

No abstract provided.


An Integral Equation For Dissipative Quantum Transport, Supriyo Datta, Michael J. Mclennan Mar 1989

An Integral Equation For Dissipative Quantum Transport, Supriyo Datta, Michael J. Mclennan

Department of Electrical and Computer Engineering Technical Reports

We present an integral equation derived under the simplifying assumption that the inelastic scattering is caused by uncorrelated point scatterers, such as magnetic impurities or impurities with internal degrees of freedom. While this assumption is not always realistic, we believe that the model can be used to describe much of the essential physics of quantum transport in mesoscopic systems. This assumption allows us to write a transport equation that involves only the electron density and not the spatial correlations of the wave function. The kernel of this integral equation is calculated from the Schrodinger equation and contains all quantum interference …


3d Location Of Circular And Spherical Features By Monocular Model-Based Vision, Y. C. Shiu, Shaheen Ahmed Mar 1989

3d Location Of Circular And Spherical Features By Monocular Model-Based Vision, Y. C. Shiu, Shaheen Ahmed

Department of Electrical and Computer Engineering Technical Reports

This paper addresses the mathematics for using monocular model-based vision to find the 3-D positions of circular and spherical model features, and, for the circular case, orientations as well. Monocular model-based vision here refers to the use of a single projective image of modeled objects to solve for the 3-D positions and orientations of the objects in the scene. The mathematics for solving 3-dimensional position and orientation of the object from matched model and image points/lines features are well known. However, no known paper addresses spherical features arid very few papers address the mathematics involving circular model features. This paper …


Adding Slip Support To Unix System V, K. B. Sheets Mar 1989

Adding Slip Support To Unix System V, K. B. Sheets

Department of Electrical and Computer Engineering Technical Reports

SLIP (Serial Line Internet Protocal)[ROMK88][KARE86] is a means by which a serial line may be used as the data link interface for TCP/IP communication [POST80]. This document describes software which can be used to enable a computer running UNIX* System V Release 3 and equipped with the WIN3B [TWG86] software to utilize SLIP. This software is necessary to our organization since we have several UNIX machines for which no Ethernet interfaces are available and from which we would like to be able to access the campus network.


A Grid Based Subtree-Subcube Assignment Strategy For Solving Pdes On Hypercubes, Mo Mu, John R. Rice Feb 1989

A Grid Based Subtree-Subcube Assignment Strategy For Solving Pdes On Hypercubes, Mo Mu, John R. Rice

Department of Computer Science Technical Reports

No abstract provided.


Solving Linear Systems With Sparse Matrices On Hypercubes, Mo Mu, John R. Rice Feb 1989

Solving Linear Systems With Sparse Matrices On Hypercubes, Mo Mu, John R. Rice

Department of Computer Science Technical Reports

No abstract provided.


Description Of Semilog, Ryan Stanisfer, Chul Hung, Andrew B. Whinston, Parthasarathy Bhasker Feb 1989

Description Of Semilog, Ryan Stanisfer, Chul Hung, Andrew B. Whinston, Parthasarathy Bhasker

Department of Computer Science Technical Reports

No abstract provided.


Automatic Load Balanced Partitioning Strategies For Pde Computations, N. P. Chrisochoides, C. E. Houstis, Elias N. Houstis, S. K. Kortesis, John R. Rice Feb 1989

Automatic Load Balanced Partitioning Strategies For Pde Computations, N. P. Chrisochoides, C. E. Houstis, Elias N. Houstis, S. K. Kortesis, John R. Rice

Department of Computer Science Technical Reports

No abstract provided.


Reachability Trees For High Level Petri Nets With Marking Variables, Chuang Lin, Dan C. Marinescu Feb 1989

Reachability Trees For High Level Petri Nets With Marking Variables, Chuang Lin, Dan C. Marinescu

Department of Computer Science Technical Reports

No abstract provided.


Semi Iterative Methods On Distributed Memory Multiprocessor Architectures, A. Hadjidimos, Elias N. Houstis, John R. Rice, M. K. Samartzis, E.A. Vavalis Feb 1989

Semi Iterative Methods On Distributed Memory Multiprocessor Architectures, A. Hadjidimos, Elias N. Houstis, John R. Rice, M. K. Samartzis, E.A. Vavalis

Department of Computer Science Technical Reports

No abstract provided.