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Articles 10171 - 10200 of 12092
Full-Text Articles in Entire DC Network
A Paradigm For Concurrency Control In Heterogeneous Distributed Database Systems, Weimin Du, Ahmed K. Elmagarmid
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
Efficient Implementation Of Modularity In Raid, Charles Koelbel, Fady Lamaa, Bharat Bhargava
Department of Computer Science Technical Reports
No abstract provided.
Communication-Based Recovery In Replicated Databases, Bharat Bhargava, Shirley Browne
Communication-Based Recovery In Replicated Databases, Bharat Bhargava, Shirley Browne
Department of Computer Science Technical Reports
No abstract provided.
Parallel Rectilinear Shortest Paths With Rectangular Obstacles, Mikhail J. Atallah, Danny Z. Chen
Parallel Rectilinear Shortest Paths With Rectangular Obstacles, Mikhail J. Atallah, Danny Z. Chen
Department of Computer Science Technical Reports
No abstract provided.
Parallel Asynchronous Connected Components In A Mesh, Susanne E. Hambrusch, Michael Luby
Parallel Asynchronous Connected Components In A Mesh, Susanne E. Hambrusch, Michael Luby
Department of Computer Science Technical Reports
No abstract provided.
Digital Measurement Of Partial Discharge, James Patrick Steiner, W. L. Weeks
Digital Measurement Of Partial Discharge, James Patrick Steiner, W. L. Weeks
Department of Electrical and Computer Engineering Technical Reports
Various new measurement techniques have been developed for a high voltage phenomenon referred to as partial discharge. Partial discharge is a localized breakdown of the high voltage insulation system which is observed as low level, random emissions. Both electrical and acoustic emissions have been measured in underground power cables, solid cast power transformers and in lumped specimens. Typical problems complicating the measurements are the randomness of the emission, high levels of interference and extreme distortion of the signal by the propagation path. Various signal processing techniques have been adapted to the measurement of partial discharge. The techniques investigated are capable …
Tutorial On Lisp Object- Oriented Programming For Blackboard Computation (Solving The Radar Tracking Problem), P. R. Kersten, A. C. Kak
Tutorial On Lisp Object- Oriented Programming For Blackboard Computation (Solving The Radar Tracking Problem), P. R. Kersten, A. C. Kak
Department of Electrical and Computer Engineering Technical Reports
This exposition is a tutorial on how object-oriented programming in Lisp can be used for programming a blackboard. Since we have used Franz Lisp and since object oriented programming in Franz is carried out via flavors, the exposition demonstrates how flavors can be used for this purpose. The reader should note that the different approaches to object-oriented programming share considerable similarity and, therefore, the exposition should be helpful to even those who may not wish to use flavors. We have used the radar tracking problem as a ‘medium’ for explaining the concepts underlying blackboard programming. The blackboard database is constructed …
Physics And Modeling Of Submicron Devices, Supriyo Datta, Mark S. Lundstrom, Amitava Das, Roger Lake, Michael J. Mclennan, Mark Stettler
Physics And Modeling Of Submicron Devices, Supriyo Datta, Mark S. Lundstrom, Amitava Das, Roger Lake, Michael J. Mclennan, Mark Stettler
Department of Electrical and Computer Engineering Technical Reports
No abstract provided.
Adaptable Recovery Using Dynamic Quorum Assignments, Bharat Bhargava, Shirley Browne
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
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 …
Detailed Modeling And Reliability Analysis Of Fault-Tolerant Processor Arrays, Noe Lopez-Benitez, Jose A. B. Fortes
Detailed Modeling And Reliability Analysis Of Fault-Tolerant Processor Arrays, Noe Lopez-Benitez, Jose A. B. Fortes
Department of Electrical and Computer Engineering Technical Reports
Recent advances in VLSI/WSI technology have led to the design of processor arrays with a large number of processing elements confined in small areas. The use of redundancy to increase fault-tolerance has the effect of reducing the ratio of area dedicated to processing elements over the area occupied by other resources in the array. The assumption of fault-free hardware support (switches, buses, interconnection links, etc.,), leads at best to conservative reliability estimates. However, detailed modeling entails not only an explosive growth in the model state space but also a difficult model construction process. To address the latter problem, a systematic …
Self-Organizing Neural Network For Optimum Supervised Learning, Manoel Fernando Tenorio, Wei-Tsih Lee
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
Supporting Value Dependency For Nested Transactions In Interbase, Ahmed K. Elmagarmid, Weimin Du
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
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
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.
Current Controlled Brushless Dc Motor Drive, Fadi Abdal
Current Controlled Brushless Dc Motor Drive, Fadi Abdal
Department of Electrical and Computer Engineering Technical Reports
Current-control strategies for a three-phase four-pole brushless dc motor are developed and analyzed. The brushless dc motor and the voltage-fed inverter used in the system are first described. Voltage control through pulse width modulation is presented and then the current-controlled brushless dc drive system is examined in detail. A relationship between the inverter source voltage magnitude and the motor’s parameters is determined. Feedback control schemes are studied, and lastly the dynamic performance using computer simulation is presented.
Report On A Periodic Extrinsic Infrared (Peir) Photoconductor, P. E. Welsh, R. J. Schwartz
Report On A Periodic Extrinsic Infrared (Peir) Photoconductor, P. E. Welsh, R. J. Schwartz
Department of Electrical and Computer Engineering Technical Reports
An infrared photoconductor, designated as the Periodic Extrinsic InfraRed (PEIR) photoconductor, is proposed. A PEIR photoconductor will be useful for detecting wavelengths from 7 μm (1400 cm-1) to longer than 100 μm (100 cm-1). Through epitaxial growth, a PEIR photoconductor is made up of heavily doped layers separated by lightly doped layers. The heavily doped layers are doped such that an impurity band forms but are not doped high enough to cause the impurity band to merge with the conduction or valence band. The lightly doped layers are used to confine the carriers in the impurity bands and consequently, conduction …
The Coupon-Collector Problem Revisited, Arnon Boneh, Micha Hofri
The Coupon-Collector Problem Revisited, Arnon Boneh, Micha Hofri
Department of Computer Science Technical Reports
No abstract provided.
The Design Of Equal Complexity Fir Perfect Reconstruction Filter Banks Incorporating Symmetries, Eric Viscito, Jan Allebach
The Design Of Equal Complexity Fir Perfect Reconstruction Filter Banks Incorporating Symmetries, Eric Viscito, Jan Allebach
Department of Electrical and Computer Engineering Technical Reports
In this report, we present a new approach to the design of perfect reconstruction filter banks (PRFB’s) which have equal length FIR analysis and synthesis filters. To achieve perfect reconstruction, necessary and sufficient conditions are incorporated directly in a numerical design procedure as a set of quadratic equality constraints among the impulse response coefficients of the filters. Any symmetry inherent in a particular application, such as quadrature mirror symmetry, linear phase, or symmetry between analysis and synthesis filters, may be exploited to reduce the number of variables and constraints in the design problem. A novel feature of our new approach …
Optical Flow Estimation By Integrating Feature-Based With Flow-Based Schemes Under Multiresolution, Chia-Hoang Lee, Zhongquan Wu
Optical Flow Estimation By Integrating Feature-Based With Flow-Based Schemes Under Multiresolution, Chia-Hoang Lee, Zhongquan Wu
Department of Computer Science Technical Reports
No abstract provided.
An Expert System For Unit Commitment, R. E. Tyson
An Expert System For Unit Commitment, R. E. Tyson
Department of Electrical and Computer Engineering Technical Reports
Methods used to solve the unit commitment problem of power generating systems should give a solution which is both feasible and optimal, and should be flexible enough to be rapidly and easily reimplemented in response to a changing and unpredictable environment. An expert system is proposed which incorporates both heuristic and numerical optimization methods to achieve such a solution. The expert system acts like a preprocessor for data which is to be used by a Dynamic Programming routine to determine the most economical schedule of generating units. After the schedule has been generated, the expert system acts like a postprocessor …
Annual Summary Activities Of The Purdue Electric Power Center May 1988 - April 1989, G. T. Heydt
Annual Summary Activities Of The Purdue Electric Power Center May 1988 - April 1989, G. T. Heydt
Department of Electrical and Computer Engineering Technical Reports
No abstract provided.
Insb/Cdte Heterostructures Grown By Molecular Beam Epitaxy, Jack L. Glenn Jr, Sungki O., Robert L. Gunshor, Leslie A. Kolodziejski
Insb/Cdte Heterostructures Grown By Molecular Beam Epitaxy, Jack L. Glenn Jr, Sungki O., Robert L. Gunshor, Leslie A. Kolodziejski
Department of Electrical and Computer Engineering Technical Reports
Given the potential for quantum effect device application, the growth, by molecular beam epitaxy, and characterization of InSb-CdTe heterostructures is described. Two procedures for growth of these heterostructures are employed. For the growth of InSb/CdTe double heterostructures, InSb and CdTe layers are grown in separate MBE growth chambers connected via an ultrahigh vacuum transfer module. Here, antimony originating from a compound InSb source oven is used for growth of InSb layers. For the growth of CdTe/InSb multiple quantum well structures, InSb and CdTe layers are grown in a single MBE growth chamber, where antimony is derived from an antimony cracking …
Hiris Performance Study, John P. Kerekes, D. A. Landgrebe
Hiris Performance Study, John P. Kerekes, D. A. Landgrebe
Department of Electrical and Computer Engineering Technical Reports
In this report, the remote sensing system simulation is used to study a proposed sensor concept. An overview of the instrument and its parameters is presented, along with the model of the instrument as implemented in the simulation. Signal-to-noise levels of the instrument under a variety of system configurations are presented and discussed. Classification performance under these varying configurations is also shown, along with relationships between signal-to-noise ratios, feature selection, and classification performance.
Approximate Delay Analysis Of Transaction Oriented Communication In A Distributed System, Dan C. Marinescu
Approximate Delay Analysis Of Transaction Oriented Communication In A Distributed System, Dan C. Marinescu
Department of Computer Science Technical Reports
No abstract provided.
Finding Point Correspondences And Determining Motion Of A Rigid Object From Two Weak Perspective Views, Chia-Hoang Lee, Thomas Huang
Finding Point Correspondences And Determining Motion Of A Rigid Object From Two Weak Perspective Views, Chia-Hoang Lee, Thomas Huang
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
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.
On The Parallel-Decomposability Of Geometric Problems, Mikhail J. Atallah, Jyh-Jong Tsay
On The Parallel-Decomposability Of Geometric Problems, Mikhail J. Atallah, Jyh-Jong Tsay
Department of Computer Science Technical Reports
No abstract provided.
Detecta-Duct Evaluation Update, Brian Shields
Detecta-Duct Evaluation Update, Brian Shields
Purdue Road School
No abstract provided.
Attracting Students To A Professional Career In Transportation Engineering, Harold L. Michael
Attracting Students To A Professional Career In Transportation Engineering, Harold L. Michael
Purdue Road School
No abstract provided.