Open Access. Powered by Scholars. Published by Universities.®
Electrical and Computer Engineering
Electrical and Computer Engineering Faculty Research & Creative Works
- Keyword
-
- Electromagnetic Interference (102)
- Electromagnetic Compatibility (95)
- Neurocontrollers (62)
- Printed Circuits (60)
- Finite Difference Time-Domain Analysis (58)
-
- Printed Circuit Boards (57)
- Power System Control (56)
- Computer Simulation (52)
- Mathematical Models (49)
- Voltage Control (46)
- EMI (44)
- Neural Nets (43)
- Capacitors (41)
- Power Electronics (41)
- Optimal Control (38)
- Time Domain Analysis (38)
- Neural Networks (37)
- Power System Stability (37)
- Particle Swarm Optimization (36)
- Printed Circuit Design (36)
- Learning (Artificial Intelligence) (34)
- Invertors (33)
- Equivalent Circuits (32)
- Electromagnetic Shielding (31)
- Adaptive Control (30)
- Microwave Measurement (30)
- Dielectric Materials (29)
- Nondestructive Testing (29)
- Finite Difference Method (28)
- Energy Storage (27)
- Publication Year
Articles 2341 - 2370 of 2389
Full-Text Articles in Engineering
Memory Utilization For A Dynamically Microprogrammed Computer, Paul D. Stigall
Memory Utilization For A Dynamically Microprogrammed Computer, Paul D. Stigall
Electrical and Computer Engineering Faculty Research & Creative Works
A Particular, Dynamically Microprogrammed Computer (Proposed by Tucker and Flynn in Commun. of ACM, April 1971) is Considered with Respect to Main Memory and Micro-Memory Utilization. a Dependency is Shown between Memory Utilization and Utilization of the Arithmetic and Logic Unit.
Generalized Feedback Shift Register Pseudorandom Number Algorithm, Theodore Gyle Lewis, W. H. Payne
Generalized Feedback Shift Register Pseudorandom Number Algorithm, Theodore Gyle Lewis, W. H. Payne
Electrical and Computer Engineering Faculty Research & Creative Works
The generalized feedback shift register pseudorandom number algorithm has several advantages over all other pseudorandom number generators. These advantages are: (1) it produces multidimensional pseudorandom numbers; (2) it has an arbitrarily long period independent of the word size of the computer on which it is implemented; (3) it is faster than other pseudorandom number generators; (4) the "same" floating-point pseudorandom number sequence is obtained on any machine, that is, the high order mantissa bits of each pseudorandom number agree on all machines— examples are given for IBM 360, Sperry-Rand-Univac 1108, Control Data 6000, and Hewlett-Packard 2100 series computers; (5) it …
On The Method Of Stationary Phase, Byungkyu Park
On The Method Of Stationary Phase, Byungkyu Park
Electrical and Computer Engineering Faculty Research & Creative Works
The method of stationary phase (MSP), which is an asymptotic method of integration, nevertheless yields general (nonasymptotic) results when applied to certain integrals involving the spherical function. In such cases one may drop the requirement of far-field or high frequency from the results. Copyright © 1973 by The Institute of Electrical and Electronics Engineers. Inc.
Performance Degradation Due To Specular Multipath Intersymbol Interference, G. H. Smith, David R. Cunningham, Rodger E. Ziemer
Performance Degradation Due To Specular Multipath Intersymbol Interference, G. H. Smith, David R. Cunningham, Rodger E. Ziemer
Electrical and Computer Engineering Faculty Research & Creative Works
Plots of performance degradation are used to compare the effects of fading and intersymbol interference in a two-component specular multipath digital communications channel. Similar plots are then used to compare two practical receivers designed to combat the interference. Degradation plots are shown to allow easy identification of each receiver's range of usefulness, as well as identification of variance bounds demanded of channel parameter estimates which the receivers require. Copyright © 1973 by The Institute of Electrical and Electronics Engineers, Inc.
An Accurate Digital Instrument To Measure Reactor Period, Ernest W. Scott, Paul D. Stigall
An Accurate Digital Instrument To Measure Reactor Period, Ernest W. Scott, Paul D. Stigall
Electrical and Computer Engineering Faculty Research & Creative Works
At Facilities Having a Research-Training Reactor, such as the University of Missouri-Rolla Reactor (UMRR), One Finds It Necessary to Perform a Large Number of Rod Calibrations during the Course of the Year. in Practice Rod Worths Are Determined by Measuring the Reactor Period Created by an Incremental Withdrawal of the Rod under Calibration. Period is Then Related to Reactivity Thru the Use of a Publication Such as the AEC Publication, ID016485. This Frequent Measurement of Period Makes It Desirable to Have a Simple, Automatic and Accurate Method to Make Such Measurements. at UMRR We Have Designed, Constructed and Installed Such …
An Improved Single Flight Technique For Radar Stereo, Gordon E. Carlson
An Improved Single Flight Technique For Radar Stereo, Gordon E. Carlson
Electrical and Computer Engineering Faculty Research & Creative Works
An improved technique for obtaining stereo radar image pairs is described. The technique uses a unique combination of two different radar beam pattern characteristics. The resulting stereo radar images are illuminated from very nearly the same aircraft position which results in radar shadow and back-scatter characteristics which are very similar and in improved image registration possibilities. The reduction in illumination angle and aircraft position differences is shown to be nearly an order of magnitude or more when compared with a previously proposed single flight technique which used two vertical fan beam patterns at different azimuth angles. As a related sidelight …
Tilt-Table Alignment For Inertial-Platform Maintenance Without A Surveyed Site, Gordon E. Carlson, Max E. Bott
Tilt-Table Alignment For Inertial-Platform Maintenance Without A Surveyed Site, Gordon E. Carlson, Max E. Bott
Electrical and Computer Engineering Faculty Research & Creative Works
A method for aligning the rotary tilt table for an inertial-platform maintenance facility without surveying the site is analyzed and evaluated. The method utilizes multiple measurements of the tilt-table azimuth alignment error with different inertial platforms to determine a best estimate of the alignment error. Error analysis indicates that useful facility performance can be obtained with only a small number of measurements. The tilt-table alignment accuracy can be improved as more measurements of the alignment error are made during normal facility operation. © 1973, IEEE. All rights reserved.
Microprogramming For Probability Distribution Sampling, Theodore Gyle Lewis
Microprogramming For Probability Distribution Sampling, Theodore Gyle Lewis
Electrical and Computer Engineering Faculty Research & Creative Works
Microprogramming of special instructions for sampling of random variates from any probability distribution is a means of increasing sampling speed. The diversity of sampling techniques is narrowed to one general algorithm: conditional bit sampling. Conditional bit sampling uses a high-speed uniform random number generator based on feedback shift registers to sample one bit at a time. The probability of a bit being a one in the j-th position of a binary expanded variate is stored in a table of conditional probabilities. A comparison with the pseudorandom number yields a one or zero. The table of conditional probabilities is generated once …
Comments On “Accelerated Model-Reference Adaptation Via Lyapunov And Steepest Descent Design Techniques”, John S. Pazdera, Hugh F. Spewce
Comments On “Accelerated Model-Reference Adaptation Via Lyapunov And Steepest Descent Design Techniques”, John S. Pazdera, Hugh F. Spewce
Electrical and Computer Engineering Faculty Research & Creative Works
No abstract provided.
Reconstruction Of Finite Duration Signals, John A. Stuller
Reconstruction Of Finite Duration Signals, John A. Stuller
Electrical and Computer Engineering Faculty Research & Creative Works
The Problem of Reconstructing a Finite-Duration Finite- Energy Signal that Has Been Band Limited and Sampled is Considered. an Interpolation Formula is Derived that, in Principle, Permits Perfect Signal Reconstruction in the Noiseless Case Provided Only that the Sampling Frequency Exceeds the Cutoff Frequency of the Band-Limiting Filter. the Degradation Introduced by Measurement Noise on the Samples is Evaluated. © 1972, IEEE. All Rights Reserved.
A State-Space Approach To Rlct Two-Port Transfer-Function Synthesis, Eddie R. Fowler, Rao Yarlagadda
A State-Space Approach To Rlct Two-Port Transfer-Function Synthesis, Eddie R. Fowler, Rao Yarlagadda
Electrical and Computer Engineering Faculty Research & Creative Works
This paper presents an interesting procedure for the synthesis of an RLCT two-part transfer function. An RLC ladder, consisting of n reactive elements and two resistors, is derived by using a tridiagonal matrix developed by Navot. The entries in this matrix are expressed in terms of the element values of the ladder network. Two voltage drivers are introduced into the ladder network to obtain a desired short-circuit transfer-admittance function numerator degree, using the classical theorems on transmission zeros. If the numerator degree of the transfer function is i (i < n), then, in general, (i) ladder networks need to be derived. The final network, corresponding to this transfer function, is obtained by paralleling the ladder networks (with transformers if necessary). Extensions to general short-circuit transfer admittance, open-circuit transfer impedance, and voltage transfer functions are briefly discussed. © 1972, IEEE. All rights reserved.
Industry Participation In Electrical Engineering Education-Extra High Voltage Laboratory, J. Derald Morgan
Industry Participation In Electrical Engineering Education-Extra High Voltage Laboratory, J. Derald Morgan
Electrical and Computer Engineering Faculty Research & Creative Works
A unique electrical engineering laboratory course is described. This laboratory is an example of how industry can cooperate with universities in engineering education. The organization and operation of the course as well as the course material is outlined and explained, including the ways in which the industry participates in the operation of the laboratory. The educational benefits derived from such a cooperation between industry and the university are briefly detailed. These benefits are extended to the student, the University, the faculty, and the participating industry. This article provides the framework on which other laboratory experiences could be conceived and developed …
A Gamma-Level Portable Ring-Core Magnetometer, Stanley V. Marshall
A Gamma-Level Portable Ring-Core Magnetometer, Stanley V. Marshall
Electrical and Computer Engineering Faculty Research & Creative Works
A four-transistor circuit is described for a battery-operated magnetometer that has 0.1 γ resolution using t-in diameter 4–79 or 6–81 Mo-Permalloy tape cores of 20–40 Mx capacity. The center-tapped drive winding also serves as the sense winding, simplifying the sensor assembly. Some signal-to-noise results are presented to illustrate the fairly wide difference that may exist between cores of the same cross section and to demonstrate the advantage of reducing core area. Copyright © 1971 by The Institute of Electrical and Electronics Engineers, Inc.
Deriving Dc Machine Torque By The Principle Of Virtual Work, George Mcpherson
Deriving Dc Machine Torque By The Principle Of Virtual Work, George Mcpherson
Electrical and Computer Engineering Faculty Research & Creative Works
The purpose of this paper is to fill a gap which exists in the "textbook" theory of dc machines. The paper shows that the usual expression for dc machine torque can be obtained from the direct application of the principle of virtual work to the machine, making the traditional assumptions. The method provides additional benefits in that it demonstrates the reluctance torque which results from the saliency of the field structure and shows that compensating windings have no effect on the torque under the assumed linear conditions. Copyright © 1971 by The Institute of Electrical and Electronics Engineers, Inc.
A State Assignment Procedure For Asynchronous Sequential Circuits, Gary K. Maki, James H. Tracey
A State Assignment Procedure For Asynchronous Sequential Circuits, Gary K. Maki, James H. Tracey
Electrical and Computer Engineering Faculty Research & Creative Works
This paper presents a new procedure for constructing nonuniversal shared-row internal state assignments for asynchronous sequential circuits. The method consists basically of establishing an initial code with the minimum number of variables required to dis. © 1971, IEEE. All rights reserved.
Electrical Engineering Education In An Industrial Laboratory, J. Derald Morgan
Electrical Engineering Education In An Industrial Laboratory, J. Derald Morgan
Electrical and Computer Engineering Faculty Research & Creative Works
This paper describes a unique electrical engineering laboratory course. This laboratory is an example of industry-uni-versity cooperation in engineering education. The organization and operation of the course is outlined and explained. The educational benefits derived from such cooperation between industry and the university are briefly detailed. These benefits are extended to the students, the university, the faculty, and the participating industry. This paper provides the framework and challenge to industry from which other laboratory experiences can be conceived and developed. Copyright © 1971 by The Institute of Electrical and Electronics Engineers, Inc.
The Effect Of Channel Errors In The Differential Pulse-Code-Modulation Transmission Of Sampled Imagery, Roger J. Arguello, Harvey R. Sellner, John A. Stuller
The Effect Of Channel Errors In The Differential Pulse-Code-Modulation Transmission Of Sampled Imagery, Roger J. Arguello, Harvey R. Sellner, John A. Stuller
Electrical and Computer Engineering Faculty Research & Creative Works
This Paper Presents an Analysis, Simulation, and Discussion of the Effects of Communication Errors on Four-Bit Differential Pulse-Code Modulation (DPCM) Sampled Imagery. Simulations Are Presented that Describe the Effects of Inserting Periodic "PCM Updates" in Order to Correct Communication Errors in the DPCM Transmission of Photographic Scenes that Have Been Scanned and Sampled at the Nyquist Rate. Copyright © 1971 by the Institute of Electrical and Electronics Engineers, Inc.
Maximum-Distance Linear Codes, Gary K. Maki, James H. Tracey
Maximum-Distance Linear Codes, Gary K. Maki, James H. Tracey
Electrical and Computer Engineering Faculty Research & Creative Works
Described here is a linear code that has a maximum distance between codewords of k for a code of order 2k. Since the minimum-maximum distance is k for a code of order 2k, a class of minimum-maximum distance codes results. For an (n,k) linear code, k ≤ n ≤ k + k∣2 for k even and k ≤ n ≤ k + (k - 1)/2 for k odd. Maximum-distance codes are found useful in encoding the states of sequential circuits. © 1971, IEEE. All rights reserved.
Empirical Bayesian Learning, David R. Cunningham, Arthur M. Breipohl
Empirical Bayesian Learning, David R. Cunningham, Arthur M. Breipohl
Electrical and Computer Engineering Faculty Research & Creative Works
It is shown that a certain weighted average of the prior distribution and the empirical distribution yields an estimate of the posterior distribution that is consistent with Bayes' theorem. Acomparison of this approach and conventional parametric Bayesian estimation is made for some specific cases. Copyright © 1971 by The Institute of Electrical and Electronics Engineers, Inc.
A Simplification Heuristic For Large Flow Tables, R. J. Smith, James H. Tracey
A Simplification Heuristic For Large Flow Tables, R. J. Smith, James H. Tracey
Electrical and Computer Engineering Faculty Research & Creative Works
Flow tables specifying large asynchronous sequential circuits often contain more internal states than are required to specify desired circuit behavior. Known minimization techniques appear unsuited for reduction of such large (rows X columns > 250) flow tables, because of excessive computation and intermediate data requirements for problems of this size. The algorithm described here is intended to rapidly produce a simplified-but in general non-minimal-flow table. It is most economical when applied to extremely large tables and was devised primarily for automated design applications. The procedure has been programmed in PL/1 and has been incorporated into an asynchronous sequential circuit design automation …
State Assignment Selection In Asynchronous Sequential Circuits, Gary K. Maki, James H. Tracey
State Assignment Selection In Asynchronous Sequential Circuits, Gary K. Maki, James H. Tracey
Electrical and Computer Engineering Faculty Research & Creative Works
Methods already exist for the construction of critical race-free assignments for asynchronous sequential circuits. Some of these methods permit the construction of many assignments for the same flow table. The algorithm presented here consists of two easy to apply tests which select that critical race-free assignment most likely to produce a set of simple next-state equations. The algorithm has been programmed. Copyright © 1970 by The Institute of Electrical and Electronics Engineers, Inc.
Baseband Agc In An Am-Fm Telemetry System, Richard S. Simpson, William H. Tranter
Baseband Agc In An Am-Fm Telemetry System, Richard S. Simpson, William H. Tranter
Electrical and Computer Engineering Faculty Research & Creative Works
The use of AGc loops at the input and output of the FM link in an AM-FM telemetry system allows the mean-square transmitter deviation to be maintained near maximum value, even though data may be nonstationary. However, errors result because of the inability of the receiver AGc loop to track perfectly gain variations in the transmitter loop. In this paper the general characteristics of AGc are discussed, and a theoretical analysis is performed to determine the time constant, steady-state error, and tracking error for a first-order loop. Also, tracking error for first order and second-order loops is investigated by simulation. …
Electric Field Strength Dependence Of Surface Damage In Oxide Passivated Silicon Planar Transistors, C. A. Goben
Electric Field Strength Dependence Of Surface Damage In Oxide Passivated Silicon Planar Transistors, C. A. Goben
Electrical and Computer Engineering Faculty Research & Creative Works
A dependence of surface degradation induced by ionizing radiation in matched oxide-passivated silicon planar epitaxial transistors on junction fringing electric field strength present during exposure is reported. The electric field strength and gamma dose dependence are investigated of the decrease in the forward current gain, hFE (as reflected by the increase in the surface recombination current component), the increase in the surface recombination velocity (as reflected by the increase in the reciprocal of the minority carrier lifetime), and the increase in junction capacitance. Empirical prediction equations have been derived, for matched devices, correlating the normalized base current increase and the …
Nuclear Radiation Enhancement Of Transistor Forward Gain At High Frequencies, C. A. Goben, Y. P. Han
Nuclear Radiation Enhancement Of Transistor Forward Gain At High Frequencies, C. A. Goben, Y. P. Han
Electrical and Computer Engineering Faculty Research & Creative Works
This investigation has characterized the effects of fast neutron bombardment on a typical n-p-n transistor (2N914) of a common emitter amplifier operating at high-frequencies (>100 MHz) by means of s-parameter measurements from 120 MHz to 350 MHz, inclusive, every 10 MHz. The changes in the four (4) s-parameters and the trends and consequences of neutron bombardment are examined pictorially on graphs. The general effect of fast neutron bombardment is to decrease the magnitude of each s-parameter for frequencies below z. fT (where z = (O/1013)0.1). However, if the device is operating above z fT, the magnitudes of s11 (input …
Excitation Requirement For Rectified Output Ac Generators, Richard Thomas Smith
Excitation Requirement For Rectified Output Ac Generators, Richard Thomas Smith
Electrical and Computer Engineering Faculty Research & Creative Works
This paper develops a method for calculating the required dc field current of a three-phase synchronous ac generator for known dc load conditions and machine characteristics. The method is simple to apply and has shown good agreement with test data. The method is of utility for preliminary design and analysis of rectified output alternators, such as may be used in excitation systems of the largest ac generators, space vehicle power applications, or high-power industrial rectification. Copyright © 1971 by The Institute of Electrical and Electronics Engineers, Inc.
Etch Patterns On Zone-Refined Fe, M. E. Straumonis, Chang-Soo Kim
Etch Patterns On Zone-Refined Fe, M. E. Straumonis, Chang-Soo Kim
Electrical and Computer Engineering Faculty Research & Creative Works
Upon dissolution of zone-refined Fe in strong acids, mainly three kinds of corrosion patterns were observed in the crystallites of the sections. Regardless of the acids, the {110} plane always appeared on the three patterns in the form of smooth and even steps, ledges, or facets. The {112}, {122}, and {123} planes were also developed but to a much lesser degree. The {100} and {111} planes were not observed because grains of the respective orientation were missing on the sections. Attempts were made to explain the formation of the planes by taking into consideration the reticular density of the planes …
Neutron Dependence Of Neutral Base Region Recombination, J. Bereisa, C. A. Goben
Neutron Dependence Of Neutral Base Region Recombination, J. Bereisa, C. A. Goben
Electrical and Computer Engineering Faculty Research & Creative Works
A discrete, deterministic mathematical model has been developed for the bulk base region of graded base devices that accounts for both the effects of neutron-induced recombination and built-in electric field in the base region at low, intermediate, and moderate current/injection levels. Exact expressions are developed for the bulk base recombination current and the collector current as functions of neutron fluence. Exact expressions are derived for the base recombination term and the relative rates of neutron-induced base current increase and collector current decrease. These expressions involve exponential and hyperbolic functions and are well suited for numerical computations and theoretical analysis. Damage …
Time-Domain Analysis And Measurement Techniques For Distributed Rc Structures. Ii. Impulse Measurement Techniques, Robert C. Peirson, Edward C. Bertnolli
Time-Domain Analysis And Measurement Techniques For Distributed Rc Structures. Ii. Impulse Measurement Techniques, Robert C. Peirson, Edward C. Bertnolli
Electrical and Computer Engineering Faculty Research & Creative Works
Transient analysis for uniform RC structures is considered in this paper. A method is presented for determining the parameters of such structures. The measurements are obtained using impulse excitations in open-circuit and short-circuit configurations. The theoretical results obtained predict fairly the experimental results. © 1969 The American Institute of Physics.
Transients Analysis Of Distributed Systems, T. N. Trick, Jack J. Bourquin
Transients Analysis Of Distributed Systems, T. N. Trick, Jack J. Bourquin
Electrical and Computer Engineering Faculty Research & Creative Works
An isomorphic relation exists between the transient response of systems whose transfer functions are of the form H(s)=B and the transient response of systems whose transfer functions are of the form [formula omitted]. Several interesting conclusions are drawn from this relationship concerning the transient response of distributed systems. Copyright © 1969 by The Insitute of Electrical and Electronics Engineers Inc.
Detection Of Slowly Fading Targets With Frequency Agility, Kenneth L. Horn, Norval D. Wallace
Detection Of Slowly Fading Targets With Frequency Agility, Kenneth L. Horn, Norval D. Wallace
Electrical and Computer Engineering Faculty Research & Creative Works
Detection probabilities for a noncoherent pulsed radar are presented as a function of maximum possible pulse-to-pulse frequency change (transmitter bandwidth) and target depth for frequency agility applied to Swerling's case I target. The transmitted frequency is a uniformly distributed random variable. Copyright © 1969 by The Institute of Electrical and Electronics Engineers, Inc.