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Interaction Between Structures And Fluids, Rahim Falsafi-Haghighi

Dissertations

A finite element model for the study of solid-fluid interaction, with applications in flow-induced vibration analysis of reactor vessel and heat exchanger internals, is presented. The model is based on the discretization of the solid equation of motion and the fluid continuity and momentum equations and employs the solid displacements together with the fluid pressure and velocity components as the nodal degrees of freedom. This permits a realistic and accurate implementation of boundary conditions, in contrast with methods using solid displacements and fluid pressure as the only field variables. The numerical solution of the resulting matrix equation, involving non-symetric matrices, …

The Causal Relationship Between Mathematics Achievement And Attitude In Grades 3 To 6: A Cross-Lagged Panel Analysis, D. William Quinn

Dissertations

No abstract provided.

The Effects Of Modeling And Feedback In Training Tutors, Kathleen M. Krumhus

Dissertations

No abstract provided.

The Effects Of Emg Biofeedback Assisted Relaxation Training Upon Problem-Solving Abilities Of Anxious Children, Mazhar Khan

Dissertations

No abstract provided.

On A System Of Nonlinear Ordinary Differential Equations With An Irregular Type Singularity: A Degenerate Case, Jerome John Przybylski

Dissertations

No abstract provided.

Dynamics Of Submerged Cylindrical Shells With Eccentric Stiffening, Kerry Kier-Ten Chu

Dissertations

A theoretical analysis is presented for treating the free vibrations of submerged, ring stiffened cylindrical shells with simply supported ends. The effects of the eccentric stiffeners are averaged over the thin-walled isotropic cylindrical shell. The energy method is utilized and the frequency equation is derived by Hamilton's Principle. All three degrees of freedom are considered. Numerical results are presented for frequencies and mode separation for several cases of interest. Comparisons with previous theoretical and experimental results indicate good agreement. The cylindrical wave approximation and the plane wave approximation for the field equation were investigated. Their applicability was evaluated and the …

Deposition Of Suspensions In Laminar Flow In The Entrance Region Of Channels With Diffusive, Electrostatic And Gravitational Effects, Thomas Anthony Korjack

Dissertations

This investigation entailed the consideration of the deposition of suspensions in laminar flow in the entrance region of a parallel-plate channel, and both converging and diverging channels, under the combined influences of diffusive, electrostatic and gravitational effects. The fluid phase was assumed to be incompressible, steady and laminar; the particle phase was assumed to be steady, laminar, dilute, and with negligible lift force.

The complete solution of the problem involved solving the boundary layer equations for the completely viscous fluid phase, and the particulate momentum, continuity and potential equations for the particle phase. Since the resulting equations are non-linear partial …

Axisymmetric Air Jet Impinging On A Hemispherical Concave Plate, Stefan Jachna

Dissertations

This experimental study was conducted on an axisymmetric air jet impinging normally on a smooth, hemispherical, concave plate. The jet Reynolds numbers, based on bulk nozzle velocity and nozzle exit air properties, were between 14,000 and 75,000.

The impingement plate used in this work was a hemispherical surface with the radius of 94 mm.

Calibrated Pitot tubes and a micromanometer were used for pressure and velocity measurements. The Pitot tubes were mounted on precision positioning mechanisms permitting the accurate traversing of any direction in space. The test air flow rate was measured with calibrated rotometers.

The following results of this …

A Longitudinal Study Of The Effects Of Selected Personality And Interest Testing On Curricular Choice And Progress Level Of Students, Rosa Stone

Dissertations

No abstract provided.

Relationships Of Screening And Diagnostic Preschool Measures To Later School Adjustment And Achievement Measures, Dorothea S. Goldenberg

Dissertations

No abstract provided.

Effects Of Bilingual Education On The Cognitive Characteristics Of The Spanish Speaking Children In Chicago Public Schools, Ramon Luis Merlos

Dissertations

No abstract provided.

Perceived Velocity Of Apparent Movement: Evidence For A Distance/Time Rule, Kathleen Ann Carlson

Dissertations

No abstract provided.

Community College Student Opinions Regarding Student Participation In Selected Academic Collective Bargaining Issues, Larry Joseph Larvick

Dissertations

No abstract provided.

Utilization Of A Selected Multiple Criteria Decision Analytic Framework To Aid Health Care Consumers In Making Educated, Objective Choices Between Health Care Delivery Alternatives, Jill Ann Kammermeyer

Dissertations

No abstract provided.

The Desmond Rebellions, 1569-1573 And 1579-1583, Claude Ronald Sasso

Dissertations

No abstract provided.

Expressed Parental Attitudes Toward Child Rearing In Relation To Study Habits, Study Attitudes And Study Skills Achievement In Early Adolescence, Minerva Elizabeth Straman

Dissertations

Problem. Parents' attitudes toward child rearing are considered to be a major factor affecting their children's study habits, study attitudes, and study skills achievement. The purpose of this study was to determine whether there is a correlation between parental attitudes toward child rearing and the study skills, study habits, and study attitudes of early adolescents toward their schoolwork.

Method. The student population used in the study were the 103 seventh- and eighth-grade students who were enrolled in Andrews Junior Academy at Berrien Springs, Michigan during the 1977-78 school year. The parents included in the study were the parents of …

Hawthorne's Ontological Models: Daguerreotype And Diorama, John Dolis

Dissertations

No abstract provided.

Competitiveness, Cooperativeness, And Assigning Grades In The High School Classroom, Nelson Edward Evans

Dissertations

Problem. Currently, educators and psychologists have been rejecting the generally favorable position competition has held as a motivator and value within education. This study focused on teacher and student orientations varying as cooperative or competitive and the effect that they can have on student grades. That the interaction among students and teachers varying by orientation may prove counter-productive in the classroom is a crucial concern for both educators and students. It was hypothesized that dissimilarly oriented teachers and students would result in lowered grades for students. Independent variables were chosen in accordance with this major hypothesis which was divided into …

Review Of The Literature On The Treatment Of Sexual Dysfunction And A Study Of Couples Who Received Treatment At Loyola University Hospital, Catherine Green

Dissertations

No abstract provided.

Career Determinants Within A Denominational Organization: The Missouri Lutheran Minister, James Bernard Wirth

Dissertations

No abstract provided.

A Study Of The Relationship Of Perceptual And Judgmental Preferences With Academic Predictors In Medical School Success, Madhavi Mehta

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No abstract provided.

Evaluation Of A Questionnaire Designed To Measure Trait Differences Of Students In Lecture, Individualized And Independent Learning Modes, Ronald Svara

Dissertations

No abstract provided.

A Study Of The Attitudes Of The Non-Science Major Toward Science And Its Importance In Curriculum Design, Larry J. Fairbanks

Dissertations

The purposes of this study were to: (1) Identify and explore the non-science majors' attitudes toward science; (2) Use the results of the investigation to design a course to be used by instructors of Earth and Space Science.

Two major instruments were developed to collect data for the study. The first was an Attitude Inventory and the second was a Course Content Inventory. A major goal of the Attitude Inventory was to collect data with which to develop an Attitude Index which could be used to predict those non-science majors who have some "negative" attitudes toward science. The course design …

Reliability And Surface Degradation Aspects Of Synthetic Insulator Materials For Hv Application, Satyapal S. Bhatia

Dissertations

This study is a theoretical and experimental investigation on the state of the art of synthetic insulators for outdoor high voltage transmission systems.

The surface of a polymeric material is known to be degraded by, among other things, environmental stresses such as UV, air pollutants, etc. The reliability of an insulator material is governed by the surface and other characteristics that do not drift much as a function of stresses and time.

The surface characteristics of various synthetic materials, when these materials were exposed to UV radiation in the laboratory were studied. The changes in the surface properties of these …

Reliability Of Mos Devices : Threshold Voltage Instability, Sesha Rajamani Shankar

Dissertations

A very important factor in the reliability of MOS devices is the stability of the threshold voltage. This dissertation examines the effects of positive and negative gate bias stresses at elevated temperatures on the drift in the threshold voltage of MOS field effect transistors.

Over 400 p-channel enhancement mode devices were life tested under different temperature and gate bias conditions for periods of up to 15,000 hours, and the drift in their threshold voltages studied and analyzed. It was found that under both negative and positive bias-temperature tests, the threshold voltage drifted towards more negative values, though in the negative …

The Development And Empirical Validation Of A Concept Analysis Program To Teach The Concepts In B. F. Skinner's Verbal Behavior, Norman Mcleod Peterson

Dissertations

No abstract provided.

Partitions Of The Vertex Set Or Edge Set Of A Graph, H. Joseph Straight

Dissertations

No abstract provided.

A Survey Of Children's Analogical Abilities For Ages 2-15, Denyse Claire Dubrucq

Dissertations

ProbIems - The problems are three: What are children’s analogical abilities? How do they vary with age and sex? And, how do they relate one to another? These interrelated problems cannot be separately studied. Procedures - An instrument of seven activities was developed and presented in individual tape recorded interviews of twenty to thirty minute duration to 140 children. Ten children of each age from two through fifteen years were interviewed. To randomize the sample, only those children having birthdays during the month of the interview were interviewed. This procedure gave agespecificity for data analysis. The tapes were transcribed onto …

Proximity Effects. Kinetics, Mechanisms And Reactivity Correlations For The Acidic And Alkaline Hydrolysis Of Ortho-Substituted-N-Methylbenzohydroxamic Acids, Irl E. Ward

Dissertations

No abstract provided.

Effects Of The Strong-Campbell Interest Inventory, Employing A Computer Generated Prose Interpretation, On Vocational Behavior Of Community College Freshmen, Tony Swerbinsky

Dissertations

No abstract provided.