Engineering Commons^™

Methodology For Evaluating The Impacts Of Energy, National Economy, And Public Policies On State Highway Financing And Performance, Fred L. Mannering

JTRP Technical Reports

No abstract provided.

Superior Bluegrasses For Roadside Turf, William Hugh Daniel, R. P. Freeborg

JTRP Technical Reports

No abstract provided.

Traffic Speed Report No. 107 : Interim Report, James Robert Mekemson, George K. Stafford

JTRP Technical Reports

No abstract provided.

Development And Use Of A Computer Simulation Model For The Evaluation Of Design And Control Alternatives For Intersections Of Minor Road With Multi-Lane Rural Highways: Model Application: Interim Report, Ahmed Essam Radwan, Kumares C. Sinha, Harold L. Michael

JTRP Technical Reports

No abstract provided.

Relationship Of Highway Development And City Development For Non-Metropolitan Places In Indiana, Hadi Yamin

JTRP Technical Reports

No abstract provided.

Validation And Practical Application Of The Utcs-1s Network Simulation Model On An Urban Arterial Street : Interim Report, Bruce Allen Hillson

JTRP Technical Reports

No abstract provided.

Traffic Speed Report No. 109 : Interim Report, Richard Philip Guenthner, George K. Stafford

JTRP Technical Reports

No abstract provided.

The Development And Application Of A Standard Compaction-Degradation Test For Shales : Interim Report, Barney Conrad Hale

JTRP Technical Reports

No abstract provided.

Development And Use Of A Computer Simulation Model For The Evaluation Of Design And Control Alternatives For Intersections Of Minor Road With Multi-Lane Rural Highways: Field Studies And Model Validation: Interim Report, Ahmed Essam Radwan, Kumares C. Sinha, Harold L. Michael

JTRP Technical Reports

No abstract provided.

Plasma Polymerization Of Tetrafluoroethylene. I. Inductive Radio Frequency Discharge, H. Yasuda, N. Morosoff, E. S. Brandt, C. N. Reilley

Chemistry Faculty Research & Creative Works

The plasma polymerization of tetrafluoroethylene in an inductively coupled radio frequency glow discharge, using a flow system, was studied. A simple long tube reactor, with the coupling coil placed at the middle of the tube and gas entrance and exit at the respective ends, was used. Deposition rates and the chemical nature of the polymer (as revealed by ESCA spectra and surface energy studies) are obtained as a function of location in the reactor tube with respect to the coupling coil and of applied energy per unit mass of tetrafluoroethylene (W/FM). It was found that a fluorine poor polymer, containing …

Thermally Stimulated Polarization Current Technique For Measuring The Electrical Conductivity Of Vitreous Solids, Chi-Ming Hong, D. E. Day

Materials Science and Engineering Faculty Research & Creative Works

The electrical conductivity of glasses determined by TSPC agrees well with that measured by conventional ac or dc techniques. The TSPC technique is a rapid and easy method of measuring the dc conductivity over the range 10−15-10−7 (Ω cm)−1 and is especially suited for conductivities <10−12 (Ω cm)−1. Polarization at the electrodes is easily detected and avoided.

Transform Domain Motion Estimation, J. A. Stuller, A. N. Netravali

Electrical and Computer Engineering Faculty Research & Creative Works

This Paper Introduces an Algorithm for Estimating the Displacement of Moving Objects in a Television Scene from Spatial Transform Coefficients of Successive Frames. the Algorithm Works Recursively in Such a Way that the Displacement Estimates Are Updated from Coefficient to Coefficient. a Promising Application of This Algorithm is in Motion‐compensated Interframe Hybrid Transform‐dpcm Image Coding. We Give a Statistical Analysis of the Transform Domain Displacement Estimation Algorithm and Prove its Convergence under Certain Realistic Conditions. an Analytical Derivation is Presented that Gives Sufficient Conditions for the Rate of Convergence of the Algorithm to Be Independent of the Transform Type. This …

An Adaptive Intraframe Dpcm Codec Based Upon Nonstationary Image Model, N. F. Maxemchuk, J. A. Stuller

Electrical and Computer Engineering Faculty Research & Creative Works

This Paper Introduces a Nonstationary Model for Images and Develops an Adaptive Intrafield Dpcm Codec based Upon the Model. the Codec Attempts to Minimize the Mean‐square Coding Error at Each Sample Point in the Picture. the Quantizer in the Resulting Adaptive Codec is Found to Be Similar to that Previously Obtained from Visual Masking Considerations. Comparative Simulation Results using 256 X 256 Pixel Rasters Are Given for Two‐ and Three‐bit/pixel Versions of the Adaptive Codec, the Three‐bit/pixel Graham Codec, and Three‐bit/pixel Previous Element Dpcm. © 1979 the Bell System Technical Journal

A Microcomputer-Based Data Acquisition System With Hardware Capabilities To Calculate A Fast Fourier Transform, R. A. Kobylinski, Rodger E. Ziemer, Paul D. Stigall

Electrical and Computer Engineering Faculty Research & Creative Works

The Fast Fourier Transform (FFT) Has in Recent Years Become an Important Tool to the Engineer. There Are a Number of Algorithms Which Calculate the FFT. One Such Algorithm is the Cooley-Tukey FFT Algorithm (Radix-2) Which Lends itself Rather Easily to a Combination Software and Hardware Implementation. with a Microcomputer as the Controller of a Data Acquisition Module and Hardware Which Computes the Butterfly Associated with the FFT Algorithm, the FFT Can Be Calculated Efficiently. © 1979 IEEE

Attenuation And Speed Of 10 Mhz Ultrasound In Canine Blood Of Various Packed Cell Volumes At 37c, D J. Hughes, L A. Geddes, Charles F. Babbs, J D. Bourland, V L. Newhouse

Weldon School of Biomedical Engineering Faculty Publications

The attenuation coefficient and the speed of 10 MHz ultrasound were determined in canine blood at 37 oC by a differential path length technique. Blood specimens with packed cell volumes (PCV) ranging from 0 to 53% were prepared by separating the cells from the plasma and mixing the two components. The mean attenuation coefficient increased linearly with packed cell volume, the least squares regression function being  (dB/cm) = 0.992 +0.039 PCV with a standard error of the estimate = 0.255. The speed of 10 MHz ultrasound, c, in millimetres per second, increased with packed cell volume, the regression function …

Elevation Of Ventricular Defibrillation Threshold In Dogs By Antiarrhythmic Drugs, Charles F. Babbs, Gkw Yim, S J. Whistler, W A. Tacker, L A. Geddes

Weldon School of Biomedical Engineering Faculty Publications

Effects of antiarrhythmic drugs upon the threshold delivered energy (TDE) and threshold peak current (TPC) for electrical ventricular defibrillation by damped sinusoidal shocks were investigated in 25 pentobarbital-anesthetized dogs. TDE and TPC were increased by the three antiarrhythmic drugs tested. Bolus injections produced a transient rise, and continuous infusions produced a steady rise in defibrillation threshold. The maximal percent elevations in mean defibrillation threshold during the 60 minutes after intravenous drug treatment in groups of n = 5 dogs were: Treatment % increase in TDE % increase in TPC Lidocaine bolus (3 mg/kg) 48 26 Lidocaine (0.5 mg/Kg/min) 99 45 …

Measurements Of Young's Modulus Of Elasticity Of The Canine Aorta With Ultrasound, D J. Hughes, Charles F. Babbs, L A. Geddes, J D. Bourland

Weldon School of Biomedical Engineering Faculty Publications

We have developed an ultrasonic technique for determining the dynamic Young's modulus of elasticity (E) of the canine aorta in vivo. Young's modulus was measured in the descending thoracic aorta (DTA) and the abdominal aorta (AA) of 12 dogs over a range of mean blood pressures from 40-200 mmHg. The vessels were excised and dynamic moduli were determined in vitro postmortem from pressure-volume curves. The data so obtained were compared to the in vivo values. In vivo and in vitro moduli increased exponentially with mean distending pressure (P). The equation of best fit for these data was of the form …

The Effect Of Laboratory Compaction On The Shear Behavior Of A Highly Plastic Clay After Saturation And Consolidation : Interim Report, James M. Johnson, C. W. Lovell

JTRP Technical Reports

No abstract provided.

Some Effects Of Unwarranted Traffic Signals, Chung-Cha Liu

JTRP Technical Reports

No abstract provided.

Amount Of Travel And Fuel Sales Attributable To Out-Of-State Vehicles On Indiana Highways, Kumares C. Sinha

JTRP Technical Reports

No abstract provided.

Effects Of Raising Load Limits On Pavements And Bridges In Indiana, Eldon J. Yoder, Benjamin Colucci-Rios, J. John Fraczek, James A. Skees

JTRP Technical Reports

No abstract provided.

Study Of The Segmental Box Girder Bridge At Turkey Run: Construction, Instrumentation, And Data Collection : Interim Report, Stephen P. Wanders, Douglas Windslow, Charles D. Sutton

JTRP Technical Reports

No abstract provided.

The Effect Of Compacted Prestress On Compacted Shale Compressibility : Interim Report, Gary Robert Witsman, C. W. Lovell

JTRP Technical Reports

No abstract provided.

Series Induction/Parallel Inverter Power Stage And Power Staging Method For Dc-Dc Power Converter, Don Cronin, John J. Biess

Mechanical and Aerospace Engineering Faculty Research & Creative Works

An improved series inductor/parallel inverter power stage and power staging method for a transistor controlled DC-DC power converter in which the integrating capacitance is located in the output of the power stage transformer and the series inductor has a secondary winding connected across this capacitance for transferring stored energy from the inductor primary directly to the transformer output rather than through the transformer, and current flow through the transformer primary is controlled by two parallel, alternately conducting pulse-width-modulated transistors in a manner such that only a single transistor is located in the main current flow path at any given time. …

0254: Leslie Carl Borchert Papers, 1942-1954, Marshall University Special Collections

Guides to Manuscript Collections

Mr. Borchert was an engineer who worked on the Manhattan Project in Chicago during WWII. He was an employee of Houdaille-Hershey. Collection consists mainly of newspapers and clippings concerning the development of atomic energy, the bomb, etc. Also memos, certificates, and items relating to auxiliary fireman.

Some Possible Solutions To Future Water Needs Of Private Water Systems, Elmer R. Daniel, Richard C. Peralta

Civil and Environmental Engineering Faculty Publications

No abstract provided.

The Effects Of Simplifying Traffic-Zone And Street-Network Systems On The Accuracy Of Traffic Assignments In Small Urban Areas In Indiana : Interim Report, Edward Wilson Hanscom, Kumares C. Sinha

JTRP Technical Reports

No abstract provided.

Traffic Speed Report No. 110 : Interim Report, Richard Philip Guenthner, George K. Stafford

JTRP Technical Reports

No abstract provided.

Acuta Enews December 1978, Vol. 7, No. 12

ACUTA Newsletters

In This Issue

PRESIDENT'S MESSAGE

POTPOURRI

1979 ACUTA CONFERENCE ACTIVITIES QUESTIONNAIRE

MOUTH OF THE SOUTH

PARTY LINE

MOTOROLA

Deck-Reinforced Slab Systems, Max L. Porter, C. E. Ekberg Jr.

CCFSS Library (1939 - present)

No abstract provided.