Engineering Commons^™

Defeasible Decisions: What The Proposal Is And Isn't, R. P. Loui

All Computer Science and Engineering Research

In two recent papers, I have proposed a description of decision analysis that differs from the Bayesian picture painted by Savage, Jeffrey and other classic authors. Response to this view have been either overly enthusiastic or unduly pessimistic. In this paper I try to place the idea in its proper place, which must be somewhere in between. Looking at decision analysis as defeasible reasoning produces a framework in which planning and decision theory can be integrated, but work on the details has barely begun. It also produces a framework in which the meta-decision regress can be stopped in a reasonable …

Development, Simulation, And Validation Of A Highly Nonlinear Hydraulic Servosystem Model, Tim W. Mclain, E K. Iversen, C C. Davis, S C. Jacobsen

Faculty Publications

A highly accurate and predictive dynamic model of an electrohydraulic actuation system has been developed and verified. The accuracy of the model can be attributed to the inclusion of nonlinear representations of many system elements including hysteresis and saturation effects, orifice areas, piston damping, and flow forces. This level of accuracy makes the model a potentially valuable tool in the analysis and design of electrohydraulic actuation systems.

Back Propagation With Integer Arithmetic, Takayuki Dan Kimura

All Computer Science and Engineering Research

The present work investigates the significance of arithmetic precision in neural network simulation. Noting that a biological brain consists of a large number of cells of low precision, we try to answer the question: With a fixed size of memory and CPU cycles available for simulation, does a larger sized net with less precision perform better than smaller sized one with higher precision? We evaluate the merits and demerits of using low precision integer arithmetic in simulating backpropagation networks. Two identical backpropagation simulators, ibp and fbp, were constructed on Mac II, ibp with 16 bits integer representations of network parameters …

Guide To Revenue Calculations: Local Option Highway User Tax 1989, Herpicc

Indiana Local Technical Assistance Program (LTAP) Publications

This guide is provided to explain the output generated by the computer programs, and to suggest ways in which the results can be adapted to specific LOHUT proposals before a County Council. HERPICC neither endorses nor opposes passage of a LOHUT. The revenue projections it provides are intended to be an aid to well-informed decision-making on the part of a county’s citizens and its County Council.

Test 1625: John Deere 8960 Powersync Diesel 12 And 24-Speed, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF THE TEST PROCEDURE General Tractors are tested at the University of Nebraska according to the Agricultural Tractor Test Code approved by the American Society of Agricultural Engineers and the Society of Automotive Engineers or official Nebraska test procedure. The manufacturer selects the tractor to be tested and certifies that it is a stock model. Each tractor is equipped with the common power consuming accessories such as power steering, power lift pump, generator, etc., if available. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operating station. An official representative of …

Performance Of Solar-Assisted Modified-Open-Front Swine Nurseries, G. R. Bodman, M. F. Kocher, J. A. Deshazer

Department of Agricultural and Biological Systems Engineering: Faculty Publications

Performance data of two modified-open-front non-mechanically ventilated swine nurseries have shown that solar energy can be effectively utilized to maintain a productive environment within the animal space during cold weather (temperatures as low as -26°C ( - 15 °F). The nurseries feature a monoslope roof design and passive collector panels that also function as warm weather ventilation panels. An active solar-heating system uses a ground-level collector operated in conjunction with an in-floor solar heat distribution and storage system. The nurseries were designed to handle pigs weighing from 7 to 23 kg (15 to 50 lb). An average of 19% of …

On-Farm Reservoir Construction In The Grand Prairie Region Of Arkansas: An Engineering Economic Analysis, Jayson K. Harper, Richard C. Peralta, Robert N. Shulstad

Civil and Environmental Engineering Faculty Publications

No abstract provided.

Theory Of A Synchronously Pumped Mode-Locked Dye Laser In The Short Pump Pulse Limit, Duncan Leo Macfarlane, Lee W. Casperson

Electrical and Computer Engineering Faculty Publications and Presentations

We study the operation of a synchronously pumped mode-locked dye laser when the pump pulse is taken as a Dirac delta function, a limit that is sometimes experimentally reasonable. We find that in this limit the model simplifies considerably and that with further assumptions the physical interpretation of synchronously pumped mode-locked operation becomes apparent. Specifically, our nonlinear dynamical model reduces to the same set of equations that govern a prepumped Q-switched laser, and from this simple picture we are able to derive approximate analytic formulas for the synchronously pumped mode-locked laser pulse width and peak intensity. Additionally, we present a …

Radio-Frequency Plasma Chemical Vapor Deposition Growth Of Diamond, Duane E. Meyer, Rodney O. Dillon, John A. Woollam

Department of Electrical and Computer Engineering: Faculty Publications

Plasma chemical vapor deposition (CVD) at 13.56 MHz has been used to produce diamond particles in two different inductively coupled systems with a mixture of methane and hydrogen. The effect of a diamond-like carbon (DLC) overcoating on silicon, niobium, and stainless-steel substrates has been investigated and in the case of silicon has been found to enhance particle formation as compared to uncoated polished silicon. In addition the use of carbon monoxide in hydrogen has been found to produce well-defined individual faceted particles as well as polycrystalline films on quartz and DLC coated silicon substrates. Plasma CVD is a competitive approach …

Earthquake Hazard Mitigation Of Transportation Facilites For Todd County, Bobby W. Meade, David L. Allen, Vincent P. Drnevich

Kentucky Transportation Center Research Report

Concern has grown in recent years over the seismic activity of the New Madrid seismic zone in Western Kentucky. Todd County, Kentucky is located in this region. To permit emergency medical, supply, and equipment traffic into this area after an earthquake has occurred, the Kentucky Transportation Cabinet is interested in the possibility of keeping selected routes passable. This report lists the routes that have been investigated and recommended as being the routes in Todd County that should be maintained in a passable condition. The recommended routes, KUS 68/KY 80 and US 79 have been visually surveyed and all seismically significant …

Earthquake Hazard Mitigation Of Transportation Facilites For Daviess County, L. John Fleckenstein, David L. Allen, Vincent P. Drnevich

Kentucky Transportation Center Research Report

Concern has grown in recent years over the seismic activity of the New Madrid seismic zone in Western Kentucky. Daviess County, Kentucky is located in this region. To permit emergency medical, supply, and equipment traffic into this area after an earthquake has occurred, the Kentucky Transportation Cabinet is interested in the possibility of keeping selected routes passable. This report lists the routes that have been investigated and recommended as being the routes in Daviess County that should be maintained in a passable condition. The recommended routes, US 231, KY 56, KY 1554, and Audubon Parkway have been visually surveyed and …

Earthquake Hazard Mitigation Of Transportation Facilites For Henderson County, L. John Fleckenstein, David L. Allen, Vincent P. Drnevich

Kentucky Transportation Center Research Report

Concern has grown in recent years over the seismic activity of the New Madrid seismic zone in Western Kentucky. Henderson County, Kentucky is located in this region. To permit emergency medical, supply, and equipment traffic into this area after an earthquake has occurred, the Kentucky Transportation Cabinet is interested in the possibility of keeping selected routes passable. This report lists the routes that have been investigated and recommended as being the routes in Henderson County that should be maintained in a passable condition. The recommended routes, US 60, US 41, KY 351, KY 416 and Audubon Parkway have been visually …

Earthquake Hazard Mitigation Of Transportation Facilites For Muhlenberg County, L. John Fleckenstein, David L. Allen, Vincent P. Drnevich

Kentucky Transportation Center Research Report

Concern has grown in recent years over the seismic activity of the New Madrid seismic zone in Western Kentucky. Muhlenberg County, Kentucky is located in this region. To permit emergency medical, supply, and equipment traffic into this area after an earthquake has occurred, the Kentucky Transportation Cabinet is interested in the possibility of keeping selected routes passable. This report lists the routes that have been investigated and recommended as being the routes in Muhlenberg County that should be maintained in a passable condition. The recommended routes, US 431 and KY 176 have been visually surveyed and all seismically significant features …

Demonstration Project No. 59: The Use Of Fly Ash In Highway Construction, Fayette County, Kentucky, David Q. Hunsucker, Gary W. Sharpe

Kentucky Transportation Center Research Report

This report summarizes preliminary site investigations, design criteria and procedures, construction criteria and procedures, and results of initial and final evaluations of an experimental road base utilizing lime kiln dust, fly ash and aggregate. Observed performance has been satisfactory. Compressive strength evaluations indicate exceptional early strength and continued strength gain of the pozzolanic base. Back calculation of specific elastic layer moduli indicate that the moduli of the pozzolanic base material is most likely within a range of 500,000 to 1,000,000 psi.

Based upon observations to date, treated bases enhance overall pavement performance and their use should be continued. It is …

Earthquake Hazard Mitigation Of Transportation Facilites For Butler County, L. John Fleckenstein, David L. Allen, Vincent P. Drnevich

Kentucky Transportation Center Research Report

Concern has grown in recent years over the seismic activity of the New Madrid seismic zone in Western Kentucky. Butler County, Kentucky is located in this region. To permit emergency medical, supply, and equipment traffic into this area after an earthquake has occurred, the Kentucky Transportation Cabinet is interested in the possibility of keeping selected routes passable. This report lists the route that has been investigated and recommended as being the route in Butler County that should be maintained in a passable condition. The recommended route, US 231, has been visually surveyed and all seismically significant features cataloged. These features …

Earthquake Hazard Mitigation Of Transportation Facilites For Ballard County, L. John Fleckenstein, David L. Allen, Vincent P. Drnevich

Kentucky Transportation Center Research Report

Concern has grown in recent years over the seismic activity of the New Madrid seismic zone in Western Kentucky. Ballard County, Kentucky is located in this region. To permit emergency medical, supply, and equipment traffic into this area after an earthquake has occurred, the Kentucky Transportation Cabinet is interested in the possibility of keeping selected routes passable. This report lists the routes that have been investigated and recommended as being the routes in Ballard County that should be maintained in a passable condition. The recommended routes, US 60 and KY 121, have been visually surveyed and all seismically significant features …

Earthquake Hazard Mitigation Of Transportation Facilites For Logan County, Bobby W. Meade, David L. Allen, Vincent P. Drnevich

Kentucky Transportation Center Research Report

Concern has grown in recent years over the seismic activity of the New Madrid seismic zone in Western Kentucky. Logan County, Kentucky is located in this region. To permit emergency medical, supply, and equipment traffic into this area after an earthquake has occurred, the Kentucky Transportation Cabinet is interested in the possibility of keeping selected routes passable. This report lists the routes that have been investigated and recommended as being the routes in Logan County that should be maintained in a passable condition. The recommended routes, US 431, US 68/KY 80, and US 79 have been visually surveyed and all …

Earthquake Hazard Mitigation Of Transportation Facilities For Webster County, Bobby W. Meade, David L. Allen, Vincent P. Drnevich

Kentucky Transportation Center Research Report

Concern has grown in recent years over the seismic activity of the New Madrid seismic zone in Western Kentucky. Webster County, Kentucky is located in this region. To permit emergency medical, supply, and equipment traffic into this area after an earthquake has occurred, the Kentucky Transportation Cabinet is interested in the possibility of keeping selected routes passable. This report lists the routes that have been investigated and recommended as being the routes in Webster County that should be maintained in a passable condition. The recommended routes, KY 109 and US 41 have been visually surveyed and all seismically significant features …

Evaluation Of Hydraway And Advanedge Pavement Edge Drains On The Mountain Parkway, L. John Fleckenstein, David L. Allen

Kentucky Transportation Center Research Report

Since 1985, Kentucky has used prefabricated edge drains on many of its major highways. Three brands have been installed to date (Hydraway, Advanedge, Akwadrain). By far, the largest quantity of material used has been Hydraway. In the past year, considerable effort has been expended in observing these materials and their behavior in the field. Problems have developed with the Hydraway material, some of which were documented in Research Report No. UKTRP-88-15 (Evaluation of Hydraway Edge Drain on Pennyrile Parkway). This brief report documents the history of edge drain installations, recent observations made on the Mountain Parkway in Powell County, and …

Relationship Between Weights Measured By Permanent Truck Scales And Golden River Weigh-In-Motion Scales, Herbert F. Southgate

Kentucky Transportation Center Research Report

The Division of Planning purchased a Golden River Weigh-in-Motion system. The first assignment was to determine the optimum calibration setting for operating each weigh mat. The second assignment was to determine the sensitivity of the weigh data. The third assignment was to develop appropriate relationships to adjust the dynamic data to equivalent static data.

A series of correlation efforts established the appropriate calibration factor for each weigh mat. Then the mats were installed at a site on I 64 in Shelby County and data were collected for over 1,600 trucks. From these data, it became evident that equations to adjust …

Earthquake Hazard Mitigation Of Transportation Facilities For Union County, Bobby W. Meade, David L. Allen, Vincent P. Drnevich

Kentucky Transportation Center Research Report

Concern has grown in recent years over the seismic activity of the New Madrid seismic zone in Western Kentucky. Union County, Kentucky is located in this region. To permit emergency medical, supply, and equipment traffic into this area after an earthquake has occurred, the Kentucky Transportation Cabinet is interested in the possibility of keeping selected routes passable. This report lists the routes that have been investigated and recommended as being the routes in Union County that should be maintained in a passable condition. The recommended routes, US 60, KY 130, and KY 109 have been visually surveyed and all seismically …

Test 1624: John Deere 8760 Powersync Diesel 12 And 24-Speed, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF THE TEST PROCEDURE General Tractors are tested at the University of Nebraska according to the Agricultural Tractor Test Code approved by the American Society of Agricultural Engineers and the Society of Automotive Engineers or official Nebraska test procedure. The manufacturer selects the tractor to be tested and certifies that it is a stock model. Each tractor is equipped with the common power consuming accessories such as power steering, power lift pump, generator, etc., if available. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operating station. An official representative of …

Test 1623: John Deere 8560 Powersync Diesel 12 And 24-Speed, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF THE TEST PROCEDURE General Tractors are tested at the University of Nebraska according to the Agricultural Tractor Test Code approved by the American Society of Agricultural Engineers and the Society of Automotive Engineers or official Nebraska test procedure. The manufacturer selects the tractor to be tested and certifies that it is a stock model. Each tractor is equipped with the common power consuming accessories such as power steering, power lift pump, generator, etc., if available. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operating station. An official representative of …

Optical- And Magnets-Optical Measurements Using A Variable Angle Of Incidence Spectroscopic Ellipsometer: Application To Dyco Multilayer, William A. Mcgahan, Z. S. Shan, Alan M. Massengale, Thomas E. Tiwald

Department of Electrical and Computer Engineering: Faculty Publications

We have extended the technique of variable angle spectroscopic ellipsometry to measurement of the magneto-optical effects as a function of wavelength and angle of incidence and field strength. Results on DyCo multilayers are reported.

Total Maximum Daily Loads And Waste Load Allocations For Las Vegas Bay: Rationale And Calulations, State Of Nevada: Division Of Environmental Protection

Publications (WR)

In September 1987 the Nevada Division of Environmental Protection revised Water Quality Standards for Las Vegas Wash (LVW) and Lake Mead. Standards were set for chlorophyll-a and unionized ammonia in Las Vegas Bay (LVB) (NDEP 1987). The 1986 and 1987 LVB data showed non-achievement of both the chlorophyll-a and unionized ammonia standard which triggered an analysis of total phosphorus and total ammonia Total Maximum Daily Loads and Waste Load Allocations which are presented in this report. This report is separated into three sections: 1. 1987 Las Vegas Bay Water Quality Conditions and Seasonal Periodicity. 2. Concentration Estimates at Northshore Road …

Direct Current-Excited Cw Co² Metal Waveguide Laser, Fahad S. Al-Mashaabi, Lee W. Casperson

Electrical and Computer Engineering Faculty Publications and Presentations

A novel design for a dc-excited cw CO₂ metal waveguide laser has been developed in which a slotted hollow cathode also doubles as a metal waveguide for the cavity modes. This design has been implemented in a compact structure that produces over 1 W of cw 10.6-µm radiation. The discharge characteristics, laser gain, and laser output have been studied as functions of various discharge parameters. The advantages of the transverse discharge of the slotted hollow cathode geometry include low voltage, positive impedance, rugged structure, and high optical gain. Overall efficiency is comparable with that of conventional longitudinal CO² lasers. The …

Convergence Properties Of The Waveform Relaxation Method As Applied To Electric Power Systems, Marija D. Ilić, J. K. White, Mariesa Crow

Electrical and Computer Engineering Faculty Research & Creative Works

Several theoretical results are presented and simple examples examined in order to determine the suitability of waveform relaxation for transient power system simulation. This examination leads to two practical suggestions that can easily be satisfied for power systems. The first is to break the simulation interval into sections, the first of which should be narrow and be used to kill off errors in the initial guess that activate the stiff modes. The second is to partition the system into subsystems that are stable, as this not only aids convergence but ensures multirate numerical stability.

College Of Engineering And Technology Bylaws 1989, Paul Savory

Department of Industrial and Management Systems Engineering: Reports

Attached are the Bylaw for the College of Engineering as approved April 21, 1989.

Optical-Absorption Edge And Disorder Effects In Hydrogenated Amorphous Diamondlike Carbon Films, T. Datta, John A. Woollam, W. Notohamiprodjo

Department of Electrical and Computer Engineering: Faculty Publications

Optical absorption (~1–5 eV) in rf-deposited hydrogenated (20–40 at. %) amorphous “diamondlike” carbon films has been studied as a function of heat treatment. For E >~ 2.5 eV a Tauc behavior is exhibited. Optical band gaps E_g are E₀, the width of the tail, is quantitatively explained in terms of the annealing temperature T_H. Increasing T_H (<700 >K) reduces the hydrogen content, lowers E_g, and appears to harden the films. E_g is determined to be a linear function of E₀. Additional analysis was performed in terms of a divergence …

Earthquake Hazard Mitigation Of Transportation Facilities For Ohio County, L. John Fleckenstein, David L. Allen, Vincent P. Drnevich

Kentucky Transportation Center Research Report

Concern has grown in recent years over the seismic activity of the New Madrid seismic zone in Western Kentucky. Ohio County, Kentucky is located in this region. To permit emergency medical, supply, and equipment traffic into this area after an earthquake has occurred, the Kentucky Transportation Cabinet is interested in the possibility of keeping selected routes passable. This report lists the route that has been investigated and recommended as being the route in Ohio County that should be maintained in passable condition. The recommended routes, KY 136 and US 231, have been visually surveyed and all seismically significant features cataloged. …