Engineering Commons^™

Mathematical Modeling Of A Sociological And Hydrologic Decision System, Wade H. Andrews, J. Paul Riley, Malcolm B. Masteller

Reports

The general goal of this study was to develop a functional model of the sociological and related hydrologic elements in flood control decision-making. Conceptual system models were developed for the hydrologic system and for the sociological system. The sociological variables were identified as they related to the steps in the process of the model. Following the conceptual decision process model the social elements of the model were calibrated from data obtained from field studies and mathematical equations were developed and tested. Finally simulations of the process were run. After adjustments were made the model was found to function. Several methodological …

The Transition Of An Engineer To An Engineering Manager: The People Problem., Edward Leon Boyd

Masters Theses

“A review of existing literature and a survey of engineering managers are used to determine the work of the engineering manager, the career path leading to an engineering management position, and the skills that should be acquired by the engineer desiring to make the transition to an engineering management position.

The work of the engineering manager, like that of any manager, is getting things done through other people. In advancing to the first formal management position, the engineer usually passes through three career stages: engineer, informal manager, and formal manager. While advancing through these career stages, the engineer must increase …

Development Of A Quadratic Finite Element Solution Of The Convective-Transport Equation., David A. Dillard

Masters Theses

"A quadratic finite element has been developed for the solution of the general three-dimensional convective-transport equation. Inherent instabilities in the numerical solution arise when the convective terms in the governing equation become significant. An application of upwinding techniques to the 20 degree of freedom serendipity element failed to produce acceptable results. Upwinding was applied to the 27 degree of freedom Lagrangian element with good results. Results of the latter element are given for several problems, including a model of a round to round metal forming process"--Abstract p. iii

Measurement Of Poisson's Ratio And Tangent Modulus Of A Loess, Craig Randall Bowers

Masters Theses

"A series of triaxial tests are used to develop mathematical models for tangent modulus and Poisson's ratio for a remolded loessial soil. These two models are then utilized in a finite element computer program to model the behavior of a shallow foundation placed on compacted loess. Different models for Poisson's ratio gave widely varying load settlement curves, however a constant value of .32 gave results very similar to that given by the experimentally developed model. It was found that the model developed for tangent modulus yielded unreasonable results when utilized in the finite element analysis until a limiting value was …

Maintenance Methods For Continuously Reinforced Concrete Pavements : Interim Report, Stanley Jay Virkler

JTRP Technical Reports

No abstract provided.

Mortar Mixtures For Thin, Skid Resistant Concrete Surfaces : Interim Report, Jorge Gomez-Dominguez

JTRP Technical Reports

No abstract provided.

The Development Of The Computerized Geotechnical Data Bank For The State Of Indiana : Interim Report, Gary Dana Goldberg

JTRP Technical Reports

No abstract provided.

Treatment Of Sanitary Wastes At Interstate Rest Areas, Phase 3 : Interim Report, James E. Etzel

JTRP Technical Reports

No abstract provided.

Application And Field Evaluation Of Very Thin Skid Resistant Pavement Surfaces : Interim Report, Ryan R. Forrestel

JTRP Technical Reports

No abstract provided.

Effect Of Binder Characteristics On Tensile Properties Of Bituminous Mixtures, Narendra Prakash Khosla

JTRP Technical Reports

No abstract provided.

Field Evaluation Of A Nuclear Density Gauge For Evaluating Concrete Consolidation, Phase 2, Charles F. Scholer, Wayne P. Schumm

JTRP Technical Reports

No abstract provided.

A Laboratory Investigation Of Cold-Mix Recycled Bituminous Pavements : Interim Report, Mang Tia

JTRP Technical Reports

No abstract provided.

Correlation Between Pore Size Distribution And Freeze Thaw Durability Of Coarse Aggregate In Concrete : Interim Report, Makoto Kaneuji

JTRP Technical Reports

No abstract provided.

Development Of A System For The Evaluation Of Pavements In Indiana : Interim Report, Satish Mohan

JTRP Technical Reports

No abstract provided.

Irish H & V News Incorporating Zone

Building Services Engineering

No abstract provided.

Torsional Vibrations Of A Composite Elastic/Viscoelastic Cylindrical Shaft, Deepak Kumar Mullick

Electronic Theses and Dissertations

The primary objective of this research is to analyze the torsional vibrations of a composite bar, and the parameters associated with the vibrations. The ultimate goal in this study of vibrations is to determine their effect on the performance and safety of the system under consideration.

Traffic Speed Report No. 105 : Interim Report, James Robert Mekemson, George K. Stafford

JTRP Technical Reports

No abstract provided.

A Multidisciplinary Team Study Of High Accident Locations : Interim Report, James R. Ogren

JTRP Technical Reports

No abstract provided.

Performance Of Buried Flexible Conduits : Interim Report, G. A. Leonards, Robert Edward Stetkar

JTRP Technical Reports

No abstract provided.

Framework For The Transferability Of Trip Generation Parameters Of Small Urban Areas In Indiana : Interim Report, Hani S. Mahmassani, Kumares C. Sinha

JTRP Technical Reports

No abstract provided.

Nucleate Boiling Heat Transfer Of Liquid Nitrogen From Plasma Deposited Polymer Coated Surfaces, Donald L. Warner, Efton Park, Kenneth G. Mayhan

Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works

In certain cases, nucleate boiling heat transfer from polymerized tetrafluoroethylene coated surfaces was more than five times the rate of heat transfer found for uncoated surfaces at a given temperature difference. It was also found that for the polymer coated surfaces the transition from nucleate to film boiling was much slower than for uncoated surfaces. © 1978.

Student Attitudes Toward The Free Enterprise System, Henry Metzner, Edwin C. Sims

Engineering Management and Systems Engineering Faculty Research & Creative Works

No abstract provided.

Discussion, Ronald A. Kohser

Materials Science and Engineering Faculty Research & Creative Works

No abstract provided.

Effect Of Pentobarbital Anesthesia On Ventricular Defibrillation Threshold In Dogs, Charles F. Babbs

Weldon School of Biomedical Engineering Faculty Publications

The effect of pentobarbital anesthesia upon the minimal voltage and current required for electrical ventricular defibrillation (the defibrillation threshold) was investigated in dogs. Threshold current, energy, and charge in five dogs averaged 2 per cent, 13 per cent, and 6 per cent less under surgical levels of pentobarbital anesthesia than thresholds in the same animals in the awake, unanesthetized state. In dogs given sufficient pentobarbital to produce apnea and supported by mechanical ventilation, threshold current, energy, and charge averaged 3 per cent, 17 per cent, and 2 per cent less than comparable awake values. These differences were far from statistically …

Protection Of Ischemic Myocardium By Whole-Body Hypothermia After Coronary Artery Occlusion In Dogs, Dana R. Abendschein, Willis A. Tacker Jr, Charles F. Babbs

Weldon School of Biomedical Engineering Faculty Publications

Anesthetized dogs were cooled to a core body temperature of 26°C or maintained at a body temperature of 37°C during periods of 5 and 10 hours of LAD coronary artery occlusion. Subsequent macroscopic dehydrogenase enzyme mapping showed that ischemic injury was 25 per cent less after 5 hours of coronary occlusion and 20 per cent less after 10 hours of occlusion in hypothermic dogs than in normothermic controls. The heart rate and left ventricular minute work in hypothermic dogs decreased to roughly half the levels measured in normothermic animals, while left ventricular contractility was 10 to 40 per cent lower …

Evaluation Of The Operating Internal Resistance, Inductance, And Capacitance Of Intact Damped Sine Wave Defibrillators, Charles F. Babbs, S J. Whistler

Weldon School of Biomedical Engineering Faculty Publications

A method is developed for determining actual values of circuit elements in a damped sine wave (Lown waveform) defibrillator, solely from measurements of the output, using two or more power resistors and a storage oscilloscope. If a defibrillator containing capacitance, C, inductance, L, and internal resistance, Ri, is discharged into increasing 5- to 100-ohm resistive loads, R, it is shown for underdamped output waveforms that aˆ = Ri/2L + R/2L and cˆ = CRi + CR, where aˆ = /[t2 tan(t1/t2)], cˆ = 2 aˆ /[ 2 aˆ + (/t2)2], t1 = time from onset to peak, and t2 = …

Temporal Stability And Precision Of Ventricular Defibrillation Threshold Data, Charles F. Babbs, S J. Whistler, G Yim

Weldon School of Biomedical Engineering Faculty Publications

Over two-hundred measurements of the minimum damped sinusoidal current and energy for transchest electrical ventricular defibrillation (ventricular defibrillation threshold) were made to determine the stability and precision of threshold data in 15 pentobarbital-anesthetized dogs. Threshold was determined by repeated trials of fibrillation and defibrillation with successive shocks of diminishing current, each 19% less than that of the preceeding shock. The lowest shock intensity that defibrillated was defined as threshold. In three groups of five dogs each, threshold was measured at intervals of 60, 15, and 5 min. over periods of 8, 5, and 1 hr. respectively. Similar results were obtained …

The Relation Between Permeability And Pore Size Distribution Of Compacted Clayey Silts : Interim Report, Ignacio Garcia-Bengochea

JTRP Technical Reports

No abstract provided.

Audio Triamplification System., John James Mccure

Electronic Theses and Dissertations

This thesis is for the purpose of determining if active filters are useful as audio crossover networks and in particular if they are better than passive crossover networks. An entire audio reproduction system was constructed with the express design intent of linear operation in two separate modes. These two modes being, first, a conventional single power amplifier passive crossover system, and second, an active filter triamplification system. Both systems were subjected to three different objective tests and one subjective test. The subjective testing included a wide spectrum of listeners ranging from rank amateurs to highly trained recording and mixing engineers. …

Evaluation Of Benefits Of The Indianapolis Innerbelt System, Charles Dulic

JTRP Technical Reports

No abstract provided.