Digital Commons Network^™

A Cross-Cultural Study Of Selected Leadership Principles, Reza Assadi

Dissertations

The intention of this study was to investigate whether leadership principles formulated by experts in the United States were applicable cross-culturally in extant leadership practices in Iran.

This study was designed to compare the attitudes of samples of American and Iranian graduate Engineering students from four state universities in Michigan— Western Michigan University, Wayne State University, Michigan State University, and.the University of Michigan— toward some selected U.S.-based leadership principles pertaining to the leaders' use of authority, influence, and power. Specific comparisons were made between the two groups of graduate students majoring in Engineering in terms of their attitudes toward the …

Analysis Of Oscillations In Nonlinear Systems Using Multiple Input Describing Functions, Frederic Lee Swern

Dissertations

Sufficient conditions for oscillation as well as absence of oscillations are presented for a class of systems containing one lumped linear element and a differentiable nonlinearity. The results are obtained by estimating the error inherent in using a describing function analysis. Contraction type arguments are used to show common topological properties of the describing function solution and the balance of first harmonic terms of the system.

After discussing the describing function method, two theorems are presented regarding existence or nonexistence of oscillations from homotopic considerations. A graphical method for examining systems with power law nonlinearities is given using a parameter …

Deposition Of Particles In Vertical Conduits Due To Electrostatic Charge, Diffusion, And Gravity, Melvin Wilbur Gelber

Dissertations

This investigation was made to determine the effect on the deposition of fine particles in a vertical channel and in a vertical tube due to the influences of electrostatic charge, diffusion, and gravity acting in the direction of flow. The flow considered was laminar, incompressible and steady.

The governing equations for the fluid phase were derived from the Navier-Stokes equation and the continuity equation while the equations for the particle phase were derived from Poisson's potential equation and the continuity equation. Since the governing equations are non-linear partial differential equations the solutions were developed using numerical methods.

The flow patterns …

Mathematical Modeling And Analytical Solutions Of Dissolved Oxygen And Biochemical Oxygen Demand Profiles Under Three-Dimensional, Unsteady-State Conditions, Uing Woong Kim

Dissertations

Mathematical models describing the temporal and spatial distribution of Dissolved Oxygen (DO) and Biochemical Oxygen Demand (BOD) for both pervious and impervious channel conditions in 3-dimensions have been constructed, and their analytical solutions were obtained. The solutions were implemented through the application of a digital computer, and their results are presented.

It has been found that there are significant differences in terms of DO and BOD distribution with respect to time and space in relatively deep and wide channels, thus necessitating the use of a 3-D, unsteady-state model.

Investigations Of Gate Turn-Off Structures, Hans Werner Becke

Dissertations

Research and Development was done on gate turn-off devices. The aim was i) to improve turn-off capability without compromise of turn-on, on-state, and useful temperature range, ii) to implement "safe" turn-off.

A) The dependence of the electrical device characteristics on cathode width for an optimized vertical structure was determined. Fall times of 100 to 200 nsec and risetimes of <400 nsec were simultaneously obtained for average current densities of 53 A/cm² @ T_j = 125°C. From spreading resistance analysis the fast t_r and t_f response is shown to be a consequence of proper Au-distribution in the active device volume.

From transient analysis it is concluded that for safe …

Statistical Averaging In Position Determination By Holography Under Turbulence Conditions, Paul Aloysius Mcgovern

Dissertations

An investigation of several, disparate phenomena is conducted with the aim of developing a novel surveying system capable of overcoming the limitations imposed by turbulence in modern surveying. This method incorporates standard holographic techniques and time domain statistical averaging of survey data.

Some pertinent characteristics of atmospheric turbulence are reviewed, and the restrictions imposed on standard surveying practices by such turbulence are identified. A model for the turbulent medium is proposed on the basis of previous work and several theoretical results are summarized and extended.

On this basis the technical characteristics of the proposed technique are developed and each step …

Correlation And Prediction Of Vapor-Liquid Equilibrium In Electrolytic Solutions, Anil Krishna Rastogi

Dissertations

Two expressions for the excess Gibbs free energy are presented which correlate and predict vapor-liquid equilibrium and the mean molal activity coefficient of an electrolyte in a ternary mixture containing water and either MeOH or EtOH. The proposed equations take into account coulombic forces between ions and the physical interaction forces between ion-solvent and solvent-solvent molecules in a solution.

Model #1 is a combination of an extended Debye and Huckel equation and the local composition of non-random two liquid (NRTL) model. A ternary mixture requires six adjustable binary parameters to predict activity coefficients. These six parameters are evaluated from three …

Separation Of Proteins Via Continuous Ph Parametric Pumping, Steve Wu

Dissertations

This dissertation covers the separation of proteins via recuperative mode pH parametric pumping. Continuous pH parametric pumping separations using the model system haemoglobin and albumin on a CM-Sepharose cation exchanger have been experimentally and theoretically investigated.

The pH parametric pumping system has a feed containing the protein mixture to be separated, introduced alternately to the top and bottom of the column. The top and bottom products are withdrawn from the apparatus during the bottom and top feed, respectively. Both equilibrium and nonequilibrium cases were considered, and theoretical results agreed with the experimental data.

Buffer concentration, flow rate, reservoir displacement, and …

Parametric Pumping With Ph And Ionic Strength : Enzyme Purification, Zikri Mostafa Ahmed

Dissertations

The work on separation and purification of proteins by parametric pumping has been restricted so far to pH parametric pumping where the difference between the iso-electric points of the components to be separated is apparent. The present work establishes the foundations for the continuous separation and purification of proteins (including enzyms) that have similar or very close iso-electric points by using the ionic strength as a driving force for the separation process. This technique has commercial advantages over batch processes.

It was found that the most promising technique for separating alkaline phosphatase consists of the following three major steps: (I) …

Separation Via Multi-Column Ph Parametric Pumping, Wei Tai Yang

Dissertations

This thesis presents the study of multi-column pH parametric pumping, a separation technique which applies the principle of parametric pumping and uses pH as control variable. Studies emphasize the mass transfer and the capability of separation by multi-column pH parametric pumping. Many operation modes of multi-column pH parapump are developed for varied objectives of separation. A Two-pH Levels Parapump is capable of enriching the product stream with solute components; a Three-pH Levels Parapump is capable of splitting components into two product streams. The separation capability of multi-column parapump is greatly superior to that of single-column parapump. As compared to cycling …

A Study Of Supervisory Procedures And Behaviors In Relation To Teacher Morale In Selected Cook County Schools, George Herbert Capper

Dissertations

No abstract provided.

The Effects Of Accreditation By The North Central Association On The Organization, Administration And Programs Of Selected Accredited Michigan Public Community Colleges, Margaret A. Crishal

Dissertations

Purpose. The purpose of the study was to determine the impact the self-study and accreditation process had on the administration and management of selected accredited Michigan public community colleges. The study investigated the following questions: 1. Does accreditation bring about educational improvements? 2. Does accreditation protect the various publics which educational institutions serve? 3. Is accreditation a catalyst for educational change? 4. Does accreditation provide the spark which results in educational services of superior quality? Five categories of possible improvements and/or change which might result from an accreditation process were investigated: goals and objectives of the institution; curriculum, instruction and/or …

A Content Validation Study Of Performance Standards Application In Technical Skills Education, John J. Gammuto

Dissertations

No abstract provided.

Educational And Occupational Aspirations: A Study Of High School Seniors In Benin City, Nigeria, Michael Sunday Onwueme

Dissertations

No abstract provided.

Perception Of Counseling Services In Job Corps By Corpsmembers, Counselors, Staff, And Administrators, Harry Kall

Dissertations

No abstract provided.

Domingo Faustino Sarmiento, His Educational Work, Ideas And Contributions, Maria Korkatsch-Groszko

Dissertations

No abstract provided.

An Investigation Of The Role Of Quantitative And Qualitative Objectives And Delayed Feedback In Prose Learning, Lawrence Allen Biro

Dissertations

No abstract provided.

Intra-Role Conflict Experience In Four Health Occupations: A Comparative Study Of Female-Intensive Vs. Male-Intensive Allied Health Occupations, Elizabeth L. Brutvan

Dissertations

No abstract provided.

Satire On Mankind: The Nature Of The Beast, Thomas Patrick Tierney

Dissertations

No abstract provided.

Patterns Of Stress In Employees Of A General Medical Hospital, Kay Bienemann

Dissertations

No abstract provided.

Cognitive Processing Style And Relaxation Training: A Comparison Of Emg Biofeedback Versus Directed Imagery As A Relaxation Technique, David J. Wakely

Dissertations

No abstract provided.

An Investigation Of The Dynamic Response Of The Activated Sludge Process, Tin-Bai Pan

Dissertations

A new mathematical model, derived from first principles of mass balance, is proposed for describing the mass transfer response of an activated sludge aeration tank in terms of a fluidized bed. The operational data to verify the proposed model were taken from an existing conventional wastewater treatment plant and a bench scale pilot plant.

The mass transfer rate, (K_dA_s), was presented by an empirical dimensionless group function as follows:

((K_dA_s)D_p/D_v) = fA_c (uD_p/ν)a ((ν/D_ν)(MLSS))^b

Or

Sh = f(A_c/A_s ) …

Feasibility Study For A Comprehensive Community College System In The United Arab Emirates, Kadhim Abdul Rassool-Ali

Dissertations

The problem in the United Arab Emirates (U.A.E.) is the shortage of trained personnel in technical and middle management among its nationals as demonstrated by the importing of 98% of its labor force from abroad.

The purpose of the study was to determine if the community college system, as designed in the United States, would be feasible in the U.A.E. in assisting the government to meet the demand for trained middle level technicians and managers. This system with its open door policy has been very successful in the United States and has extended higher education opportunities to the public from …

A Study Of Four Year State University Related Foundations, Timothy Arthur Reilley

Dissertations

The Purpose. The purpose of this study was to define the organizational and operational structures of four year state university related foundations. An additional purpose was to compile a listing of all four year state university related foundations in the United States.

Methodology. Data were obtained through the use of a questionnaire mailed to all four year state universities in the United States. The questionnaire was divided into two parts. Part one included a series of three demographic questions which identified the respondent at a certain level in each of three categories, number of students, kinds of degrees and number …

A Comparison Of Three Operational Definitions Of Job Satisfaction, Thomas J. Kuieck

Dissertations

The major purpose of the study was to provide to educational leaders information pertinent to the selection of job satisfaction instruments. The Need Satisfaction Questionnaire created by Porter, as modified by Trusty and Sergiovanni, and the Quality of Employment Job Satisfaction Survey developed by personnel from the Institute for Social Research at the University of Michigan were compared with the Minnesota Satisfaction Questionnaire developed by Weiss, Dawis, England, and Lofquist to investigate the concurrent validity of the instruments. The study focused primarily on the psychometric aspects of the Need Satisfaction Questionnaire, an instrument used by earlier investigators to assess individuals' …

A Limnological Investigation Of A Tropical Fresh-Water Ecosystem: The Belize River, Belize, Central America, Victor J. Gonzalez

Dissertations

The limnology of the Belize River, from the region of Spanish Lookout to the region of Belize City, was investigated from 1977 through 1979. The investigation was done primarily during the months of May through August, covering the two seasonal changes--wet and dry--that occur in this tropical region. The investigation sought to describe various parameters of the Belize River so as to gain an understanding of this tropical fresh-water ecosystem and to provide basic information needed for the development of management programs.

Water samples were collected from eight stations and analyzed for acidity, alkalinity, carbon dioxide, chloride, sodium chromate, hexavalent …

An Analysis Of The Decision-Making Process Used By Chief Student Personnel Administrators, Lawrence Anthony Pfaff

Dissertations

The purpose of this study was to examine the decision-making (DM) process used by chief student personnel administrators within universities from the perspective of both the chief administrator and his/her subordinates. The relation between DM method and several situational variables was examined. A comparison was made between the chief student personnel administrators' perceptions of their DM methods and the subordinates' perceptions of the chiefs' DM methods, and subordinates' perceived and preferred DM methods were compared. Also, the chief administrators' DM methods were studied in relation to: the importance of the situation as judged by subordinates and chiefs; span of control …

A Strategy For Inservice Education Of Junior-High/Middle-School Science Teachers In The Grand Rapids Public School System, David Andrew Degraaf

Dissertations

No abstract provided.

The Interrelationship Of Leader Self-Actualization And Life Stressors To The Resultant Incidence Of Reported Medical Problems Of Middle Management Educators, John S. Thatcher

Dissertations

Schools, being a part of the larger social system, have not escaped the increasing pressures evident in our society. The principalship as an important component of the educational process has not enjoyed immunity from this same problem.

Because school principals are individuals, they react differently to life stressors. Some appear to have the ability to handle all stressors without suffering any onset of medical problems. Others appear not to have this immunity and as a result have medical difficulties. Because of this seeming difference and because of a lack of research of this type in education, the relationships between life …

The Development And Use Of A Film On Public Art In The City Of Kalamazoo, Michigan, For The Purpose Of Building Community, Sesta V. Peekstok

Dissertations

The goals of this study were: (a) to produce and test the impact of a film on public art in Kalamazoo, Michigan, and (b) to demonstrate through development and use of a film on public art how public art can contribute to the building of community.

A survey of public art in the United States suggests that people's commitment to their community can be influenced by their relationship with the public art in the community. In 1965 Congress created the National Foundation on the Arts and Humanities. Stimulated by that support over the past 15 years, works of art, funded …