Digital Commons Network^™

Hans Hofmann: Master Teacher Of Painting, Diane S. Newbury

Dissertations

No abstract provided.

Chicago Area Ethnic Weekend Schools: Goals And Achievements, Wilma M. Hoffmann

Dissertations

No abstract provided.

Polish Commission For National Education, 1773-1794: Its Significance And Influence On Russian And American Education, Leszek August. Wolkowski

Dissertations

No abstract provided.

The City As Metaphor In Selected Novels Of James Purdy And Saul Bellow, Yashoda Nandan Singh

Dissertations

No abstract provided.

Illich's "Learning Web Theory" And Its Implications For Development: For The Rural Regions Of Malaysia, Colette Frances Kung

Dissertations

No abstract provided.

A Monte Carlo Study Of Pearson And Log-Linear Chi-Square One Sample Tests With Small N, Adam James Miller

Dissertations

No abstract provided.

The Relative Contribution Of Perceived Parental, Science Teacher, And Best Friend Evaluations Of Science Ability On The Self Concept Of Science Ability Held By Eighth Grade Females, Virginia Kemp Fish

Dissertations

No abstract provided.

A Meta-Analysis Of The Effects Of Modern Mathematics In Comparison With Traditional Mathematics In The American Educational System, Kuriakose K. Athappilly

Dissertations

No abstract provided.

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 Role Of Curricular And Instructional Innovation In The Past, Present, And Future Of Honors Programs In American Higher Education, Timm R. Rinehart

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.

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 …

The Continuous Non-Equilibrium Parametric Pump: A Theoretical And Experimental Study, John Lawrence Rak

Dissertations

A continuous parametric pump in which the feed and product streams flow steadily both in upflow and downflow (hot and cold temperatures, respectively) is examined theoretically and experimentally. The model system is Sodium Chloride-Water-Bio Rad AG11A8 Ion Retardation Resin, a physical system characterized by relatively slow interphase mass transfer rates. For short half-cycle times, where interphase equilibrium is not approached, separation of the salt from water is found to be enhanced by longer half-cycle times, smaller reservoir displacements, and longer adsorbant columns. In most cases, separation improves with increasing number of cycles. However, steadily degrading separation is found to exist …

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 …

Paper Recycling : Recovery Of Secondary Fibers By Selective Wettability, Gary Keith Welshans

Dissertations

A separation process has been developed which recovers similar paper grades from a mixed stock by selective wettability. This process capitalizes on the various paper additives which are intended to resist water wetting and result in paper flotation. While water can be used to achieve many desirable paper separations, the detention times required are excessive, and therefore, limit any industrial application. Surface-active agents, in low concentrations, can be used advantageously by reducing the detention times for all paper while the structure of the surfactant can be used to selectively recover similar papers over a controlled time period. Detention times have …

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.

The Social Dimension Of Mysticism: A Study Of The Meaning And Structure Of Religious Experience In The Philosophy Of William Ernest Hocking, Richard Woods

Dissertations

No abstract provided.

An Assessment Of The Organizational Climate For Creativity In The Canadian Union Conference Of Seventh-Day Adventists : Recommendations For Change Based On The Perceptions Of Leading Church Members, Donald Douglas Devnich

Dissertations

Problem. In a changing society, organizations must innovate. To achieve productive change it is necessary that the organizational climate and its effect upon organizational personnel be understood. In the field of human resource management there is always a need for insights into psychological climate in order for organizational initiative and creativity to operate. It was the purpose of the present study to construct a patterned profile of how Seventh-day Adventist leading church members in Canada perceive the organizational climate, and to analyze the findings in relationship to creativity.

Method. The Litwin-Stringer Improved Climate Questionnaire was used to assess the perceived …

A Study Of The Nature Of The Relationship Of Selected Administrative Policies Of The State Board Of Trustee's Of Indiana Vocational Technical College On Regional Administration Practices, Alois Leo Lewandoski

Dissertations

No abstract provided.

An Analysis Of Budgeting Processes And Strategies In Selected Illinois Baccalaureate Nursing Schools, Linda Cruz Agustin-Simunek

Dissertations

No abstract provided.

A Model For Initiating Change In Large Social Systems, Richard E. Ault

Dissertations

The purpose of this study was to develop a model for introducing change in large social systems. The model was based on (1) a review of existing models, and (2) the analysis of a participant-observer study of an attempt at intraducing large system change. Organization Development was the focal change modality examined. It was intended that the model thus developed would be of utility to the practicing change agent in whatever field--education, social work, community development, government, unions, business, or industry.

From the review of existing models and related literature, it was concluded that a useful model for practitioners would …

A Behavioral Systems Analysis Of Job Performance In A Food Co-Operative, Harry M. Kent

Dissertations

No abstract provided.

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 …

Science Curriculum Change As It Occurred In A Small Rural Community: A Case Study, William J. Pollard

Dissertations

No abstract provided.

A Fast Boundary Tracking Alogorithm For Constrained Nonlinear Mathematical Programming Problems, Jacob Yaghoub Moradi

Dissertations

A fast search algorithm for the solution of nonlinear mathematical programming optimization problems is presented in this thesis. A gradient search procedure is combined with a "Boundary Tracking"(BT) method using the feasible direction finding method of Zoutendijk for generating a feasible starting direction along the feasible-infeasible boundary.

The algorithm is applied to the minimum weight design of submersible, circular, cylindrical shells reinforced by equally spaced "T" type frames. This problem had produced algorithm failure in two earlier studies and was only recently solved by the Direct Search-Feasible Direction Algorithm (DSFD) which was shown by recent comparison studies to be among …

Nonlinear Buckling Of Deep Cylindrical Shell Panels With Imperfections, Madhusudan H. Jhaveri

Dissertations

The work presented in this dissertation is devoted to the analysis of nonlinear buckling of thin cylindrical shells with imperfections. The nonlinearity of the problem treated in this dissertation is that associated with large displacements in the linear elastic range. The method used is not restricted by the magnitude of the displacements provided that the strains do not exceed the limit of proportionality.

Thus, based upon the large deflection theory, cylindrical shell panel is investigated for buckling under the action of uniform external pressure. Certain higher order infinitesimal terms which are usually neglected in the shallow shell theories, have been …

Flow Of Polymer Melt Blends Through Porous Media, James Atwood Parker

Dissertations

The flow of molten polystyrene, poly(methyl methacrylate) and three blends of these polymers has been studied in a rheogoniometer and in packed beds of unconsolidated spherical glass beads. One primary purpose of the study was to determine the behavior of polymer melt blends in porous media flow. The second major purpose of the work was to develop and test a new and powerful model for packed bed flow based upon the Huang generalized rheological constitutive equations.

Rheological characterization of the pure polymers and blends was obtained using a Roberts-Weissenberg rheogoniometer. Shear and normal stresses were measured at shear rates from …

Acoustical Holography By Holographic Interferometry, Amin Mohamed Hanafy

Dissertations

The ability to "see" with sound has long been an intriguing concept. It is apparent that ultrasonic energy can give an image of an object not obtainable with light or even with x-rays.

In this dissertation, a novel "three-step acoustical holographic imaging system" is described and several means for its implementation are analyzed. A novel holographic acoustic image converter, which constitutes a fundamental link in the three step imaging method was also developed. The use of optical holographic techniques to convert an arbitrary acoustic image to a visible image is conducted and resulted in the introduction of the new technique …