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Analysis Of Multistory Frames With Light Gauge Steel Panel Infills, Craig J. Miller, Robert G. Sexsmith, Arthur H. Nilson

CCFSS Library (1939 - present)

PREFACE This report was originally presented as a thesis to the Faculty of the Graduate School of Cornell University in partial fulfillment of the requirements for the degree of Doctor of Philosophy, conferred in August 1972. The author wishes to thank Professor Arthur H. Nilson, Project Director, and Professor Robert G. Sexsmith, Principal Investigator, for the help and guidance that made this work possible. This investigation was supported by the American Iron and Steel Institute.

Design Of Near-Time-Optimal Feedback Controllers., Chon Ho Hyon

Electrical and Computer Engineering ETDs

This dissertation presents a method for designing near-time-optimal feedback controllers of time-invariant linear normal systems in which the system matrix is negative definite and the control input is a bounded scalar function.

The basic design approach is to systematically construct a sequence of multiplane (piecewise linear) suboptimal switching surfaces which converges to the optimal switching surface and to test the quality of the suboptimal switching surface constructed in each iteration until one which satisfies the relative (optimal/suboptimal) performance criterion given a priori is obtained.

Continuous Crystallization Of High Explosives, Larry E. Hatler

Chemical and Biological Engineering ETDs

Nitroguanidine (NQ) is a high explosive which is commercially available in low bulk density form (0.20 to 0.30 gms/cm³). This low bulk density limits its usefulness as an explosive. High bulk density NQ can be produced from a NQ-N, N-dime-thylformamide-Versamid 125 system when crystallized in a mixed suspension mixed product removal crystallizer. Bulk densities ranged from 0.92 to 1.05 gms/cm³ for the operating conditions used. The effect of agitator speed, growth rate, and solids concentration on nucleation rates was determined using a multiple linear regression technique. The resulting equation is: B₀ = 0.19 (RPM) ^1.54 (G) …

Entropy Reduction Of English Text Using Variable Length Grouping, Vincent Norman Ast Jr.

Dissertations and Theses

It is known that the entropy of English text can be reduced by arranging the text into groups of two or more letters each. The higher the order of the grouping the greater is the entropy reduction. Using this principle in a computer text compressing system brings about difficulties, however, because the number of entries required in the translation table increases exponentially with group size. This experiment examined the possibility of using a translation table containing only selected entries of all group sizes with the expectation of obtaining a substantial entropy reduction with a relatively small table.

An expression was …

A New Optimization Procedure For Digital Simulation, Donald Howard Schroeder

Electrical and Computer Engineering ETDs

The theory needed to define and obtain an optimized digital simulation of a given continuous system is presented in this dissertation. The frequency domain approach to simulation is used and a nonlinear function minimization algorithm, implemented on a digital computer, is incorporated to obtain the optimum simulation.

The discrete transfer function obtained from z-transform theory is used to represent the digital system. The frequency domain response of this discrete transfer function can then be expressed simply as a function of frequency, for frequencies up to one-half the sampling frequency. A frequency domain error measure, in the complex plane, is defined …

Dispersion In Laminiar Flow Of Non-Newtonian Fluids, Subhash N. Shah

Chemical and Biological Engineering ETDs

In the present investigation, Taylor's analysis of the dispersion of solutes in laminar flow of a Newtonian fluid through a circular tube was extended to the case of a non-Newtonian Eyring model fluid. A new approach was taken to solve the convective diffusion equation for the Eyring model fluid. This approach incorporates the use of the dimensionless longitudinal pressure gradient and the mean velocity to obtain the dimensionless concentration. Using an approach similar to that of Taylor, a solution of the diffusion equation was obtained for quantities such as the dimensionless concentration, mean concentration, and effective dispersion coefficient as a …

Moment-Curvature-Thrust Relationships In Hybrid Members, Douglas Wrenn Fiala

Dissertations and Theses

In order to overcome the difficulties encountered in closed form solutions, moment-curvature-thrust relationships are developed for hybrid and nonhybrid cross sections utilizing an open form method. The use of horizontal sectors permits the inclusion of residual stresses and/or nonbilinear stress-strain relationships, if desired. Theoretical and experimental data are compared. Applications to circular tubes and other cross sections are discussed. Results indicate that open form solutions are feasible for calculating moment-curvature-thrust data. Hybrid cross sections are easily treated by open form solutions.

The Use Of Hardboard And Particleboard For Composition Panels In Furniture Construction, Jerry Dean De Penning

Graduate Research Papers

This study is concerned with the investigation of lamination using particleboard and hardboard as substrates for overlays. The purpose of the research includes the following:

1. To acquire information about the history and construction processes of particleboard, hardboard, and plastic laminates.

2. To investigate the procedural application of plastic laminates and vinyl overlays to particleboard and hardboard substrates.

3. To relate to the industrial arts students the industrial use of overlays laminated to a substrate.

4. To develop an instructional unit to be used in the industrial arts program.

5. To construct a school shop project in the area of …

Complex Systems And The Price-Resource Directive Coordination Procedure, Chamberlain Lambros Foes

Dissertations and Theses

In this thesis, the problem considered is that of linear static optimization of a large system which is composed of a finite number of subsystems, each characterized by its own constraint matrix and objective function.

The total system is itself constrained by resource availabilities and other factors, and its objective function is the mathematical linear sum of the objective function of the subsystems. The total system constraints couple together all the subsystems. The total system is first reformulated as a two-level problem by decoupling the total system constraints utilizing an arbitrary partition of the total system resources and other factors …

Rotary Engine Designs Based On A Particular Off-Set Cavity/Rotor System, M. Dean Black

Theses and Dissertations

The subject of this thesis is a family of rotary engines, each consisting of a two-tipped rotor turning about an off-center axis within a nearly round cavity.

Intense Relativistic Charged Particle Beam Transport Phenomena In Vacuum, Alan Michael Chodor

Electrical and Computer Engineering ETDs

The purpose of this report is to investigate the nature of propagation processes for intense, relativistic charged particle beams in vacuum. Three areas of the problem are studied. The first subject, envelope optics, includes a formal development of the envelope equations and consideration of this approach as a device of approximation. Secondly, assuming laminar behavior, the entire beam is modeled in a closed set of partial differential equations in configuration space. A general study of this condition emphasizes invariants of laminar flow and geometric scaling. Finally, the coupled beam-field equations are solved exactly for several special cases. The optical properties …

An Electromagnetic Boundary Value Problem In An Inhomogeneous Medium, Thomas Franklin Ezell

Electrical and Computer Engineering ETDs

This dissertation presents a general theory for the solution of electromagnetic boundary value problems for regions which are not homogeneous. The theory begins with the wave equation in Fourier frequency domain for the electric field in the interior of a closed volume; the electromagnetic property parameters, specifically conductivity and dielectric constant, are written as functions of position. The wave equation, which holds throughout the interior of the closed volume, is then converted to an integral equation by use of a Green's function for the same volume containing a homogeneous medium. Boundary conditions between homogeneous regions inside the closed volume appear …

Polarization Of Infrared Waves Due To Propagation Through The Atmosphere, J. Philip Castillo

Electrical and Computer Engineering ETDs

This study presents an investigation of the polarization of infrared waves due to propagation through the atmosphere. Cumulus cloud and Haze M particle size distributions are considered for various optical depths at wavelengths of 4.0 and 10.0µ. Results at these wavelengths are compared to results at a wavelength of 0.5µ for the same physical atmosphere. Initially the radiative transfer integral equations are derived which include the Stokes polarization vector. From these integral equations a Monte Carlo simulation technique is used to simulate photon histories through the atmosphere. The effects of multiple scattering on the polarization state of the scattered intensity …

The Optimum Design Of A Shock Absorber To Minimize The Force Transmitted To The Supporting Base Of A Vibrating Equipment, J. P. Singh

Theses and Dissertations

The present study involved two types of analyses as a part of the investigation leading to the design of a shock absorber providing optimal vibration control and minimum transmissibility. Those two types of analyses were the following.

Determination Of Drag And Lift Coefficients For A Spinning Baseball, M. B. Parekh

Theses and Dissertations

Few experiments have been carried out in the past to deter mine the effect of the lift and the drag forces on the trajectory of a ball used in any game. In a baseball game, it was reported that sometimes the ball took a sharp turn aburptly in the region of 15 to 20 feet from the home plate. This indicated a sudden change of the forces acting on the ball. The principal forces acting w ere as fol lows: 1. Weight of the ball. 2. Drag force acting in the direction parallel to the relative wind. 3. Lift force …

The Dynamic Characteristics Of A Beam Whose Material Is Represented By A Three-Parameter Viscoelastic Solid, Vishnurao K. Devkar

Theses and Dissertations

Man observes many phenomena occurring in nature which he can use to his benefit. He observes how physical quantities vary as a function of their environment in order to predict how these variations will affect a system he wishes to design. For this purpose, he must establish a model that is representative of the relation between those physical quantities and certain environments to which they are subjected.

Application Of The Maximum Deformation Theory Of Failure To The Torsional Failure Due To Fracture Of 4140 Steel, C. V. Krishna Kumar

Theses and Dissertations

Forming is the fastest way of changing the shape of a piece of metal. It is the most economical process to use for high-volume mass production when the shape of a part is such that it can be made by one of the forming operations

A Study Of The Effects Of Water Institutions On Planning And Management Of Water Resources In Utah, Donald H. Mclean

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

One area of research that has been somewhat neglected in water planning programs and water development is that pertaining to water law and water institutions. Over the years each state has developed a complex system of water law and organizations for the allocation and distribution of water. The usual role of these institutions is one of orderly development and the efficient use of the water resource. However, in many cases water law and institutions have imposed serious constraints upon the planning and the most efficient use of a valuable resource.

This study, through historic research, has attempted to define these …

Diaphragm Braced Channel And Z-Section Beams, George Winter, Nuri Celebi, Teoman Peköz

CCFSS Library (1939 - present)

PREFACE Cold-·formed channels and Z-shapes are widely used as purlins supporting roof surfaces which consist of light-gage steel panels or other material. If the panels are interconnected to form diaphragms, they brace the purlins and increase their carrying capcity sizeably. It is the purpose of this investigation to explore this bracing effect and provide tools for its utilization in~design. The author wishes to express his gratitude to Professors George Winter and Teoman Pekoz, Project Directors. Their suggestions, criticism and guidance made this work possible. The research project covered by this report was sponsored at Cornell University by the American Iron …

The Structural Behavior Of Cold-Formed Steel Members With Perforated Elements, Charles S. Davis, Wei-Wen Yu

CCFSS Library (1939 - present)

PREFACE This report was originally a dissertation presented to the Faculty of the Graduate School of the University of Missouri-Rolla in partial fulfillment of the requirements for the Degree of Doctor of Philosophy in Civil Engineering, for conferment in May 1972. The research project described within was sponsored by American Iron and Steel Institute through a Special Engineering Fellowship in the fiscal year 1970-71. The author wishes to thank Dr. Wei-Wen Yu, Associate Professor of Civil Engineering, University of Missouri-Rolla for his invaluable guidance in his joint capacity as the project director and as major advisor of my advisory committee. …

The Technology And Management Of Mobile Home Production, Arthur D. Bernhardt

International Symposia on Low Cost Housing Problems

No abstract provided.

Neighborhood Satisfaction: A Study Of User Assessments Of Low Income Residential Environment, Henry Sanoff

International Symposia on Low Cost Housing Problems

No abstract provided.

A Mechanized Construction Technique For Producing Lower Cost Structures, T. Korman, H. S. Smith, G. L. Emig

International Symposia on Low Cost Housing Problems

No abstract provided.

Risk Analysis Of Lower Cost Housing Construction, Robert I. Carr Jr.

International Symposia on Low Cost Housing Problems

No abstract provided.

Problems Encountered In The Manufacture Of Monolithic Concrete Modular Houses, W. D. Tiner

International Symposia on Low Cost Housing Problems

No abstract provided.

Low Cost High Quality And High Strength Gap-Graded Concrete For Urban Renewal Housing Construction, Shu-Tien Li, V. Ramakrishnan

International Symposia on Low Cost Housing Problems

No abstract provided.

The Systems Approach To Lower-Cost Housing, Kenneth G. Jessop

International Symposia on Low Cost Housing Problems

No abstract provided.

Housing Design Process And Ekistics -- A Systems Approach, Jawalker K. Sridhar Rho

International Symposia on Low Cost Housing Problems

No abstract provided.

Precast Construction Of Tall Buildings Utilizing The Tension-Structure Principle, Rudolph Szilard, Philip C. French

International Symposia on Low Cost Housing Problems

No abstract provided.

Lower-Cost Housing Research -- Interdisciplinary Graduate Study Programs, Gunter Schmitz

International Symposia on Low Cost Housing Problems

No abstract provided.