Digital Commons Network^™

Optimal Planning Of Fixed Route Bus Transit Systems : A Systems Approach, Young Lee

Dissertations

A new bus transit planning tool is developed for application in determining operating policies of a fixed-route bus transit system. The objective of the study is to model a bus transit system which functions under time-varying passenger demands and service characteristics.

The two phase transit model developed in this research is intended for use as a mass transit planning tool, to solve transit problems confronting the mass transit planner. The model is used to compute cost differentials in transit system options. These alternatives of expanding, abandoning or modifying service depend upon the service frequency, fleet size and other system attributes …

Effect Of Gas Temperature Gradients And Radiant Heat Transmission On Kinetic Model Behavior, Richard W. J. Robertson

Dissertations

Satisfactory methods to predict radiant heat transmission in enclosures containing a radiating gas at uniform temperature are available. These methods have been traditionally used in solutions of kinetic models.

Kinetic models are strongly temperature dependent with a difference of 10°K able to double the reaction rate. In the present investigation, calculation techniques which make allowance for the non-uniformity of gas temperatures in an enclosure are applied to the kinetic models. The furnace problem considers only the radiation section with the assumption that detailed knowledge of combustion and fluid flow pattern within the enclosure is available.

If the gas space in …

A Comparison Of Two Approaches To One-Exposure Inservice Workshops Based On Values-Clarifying Questions, Marianne Kulak King

Dissertations

No abstract provided.

Ultrastructural Study On Protein Permeability Into The Ovarian Follicles Of The Mouse, Andrew F. Payer

Dissertations

No abstract provided.

Academic Problems And Personal Factors In The Education Of Thai Students In America As Related To Career Choice, Swana Pornputtkul

Dissertations

No abstract provided.

Toward A Psychological Understanding Of The American Bishop, Mary Sheehan

Dissertations

No abstract provided.

The Impact Of Psychiatric Ward Programming On Patient Habilitation: The Relative Merits Of Systematic Contingency Management, Noncontingent Milieu, And No Formal Ward Programs, Victor J. Bernstein

Dissertations

No abstract provided.

A Comparison Of Two Approaches To One-Exposure Inservice Workshops Based On Questioning In Classrooms, Sydell Weiss

Dissertations

No abstract provided.

An Analysis Of Selected Racial Issues In Public Education As Perceived By Black School Administrators In The State Of Indiana, Norman David Comer

Dissertations

No abstract provided.

Politics Of "Partnership": The Eisenhower Administration And Conservation, 1952-60, Dusen George Van

Dissertations

No abstract provided.

The Effects Of Students' And Teachers' Racial Identities On Student And Teacher Perceptions Of The Teacher Role, Karen Van Wagner

Dissertations

No abstract provided.

Dynamics Of Interconnected Systems With Pulse Frequency Modulators, Halil Ozcan Gulcur

Dissertations

The objective of this dissertation is to study the dynamics of systems consisting of interconnections of an arbitrary number of complete-reset pulse frequency modulators (CRPFM's) and linear dynamical subsystems (in general, time-varying, lumped and/or distributed). CRPFM, which represents a generalization of several types of pulse frequency modulators (PFM's), consists of two basic components; a multi-input dynamic element, called the timing-filter (TF) and a threshold device (TD). Whenever the output of the TF reaches a given threshold value the TD generates an impulse and, at the same time, resets all the states of the TF to zero. This dissertation is devoted …

Student Activism And Implications For Academic Governance In The Bicol University, Legazpi City, Philippines, Jaime Red Recana

Dissertations

No abstract provided.

The Effects Of A Student Determined Curriculum Versus A Traditionally Determined Curriculum On The Health Interests And Cognitive Development In Health Of College Students, James H. Price Jr.

Dissertations

No abstract provided.

The Integrated Basic Science Course At Kalamazoo Valley Community College, Dorothy Nichols Hackett

Dissertations

No abstract provided.

Adaptive, Differential Pulse-Code Modulation For Speech Processing, Peter Cummiskey

Dissertations

The objective of the research reported here is the design of efficient speech coders that can easily be implemented in integrated circuit hardware. Companding techniques like those introduced by M. R. Winkler, J. A. Greefkes, F. DeJager, A. Tomozawa and H. Kaneko were explored along with a large body of theory concerning the application of linear prediction to speech coding.

The best features of the speech signal to be measured and coded are the overall amplitude, the resonant frequencies and dampings of the vocal cavity and the fundamental frequency of the vocal cord oscillations. Adaptive quantization was used to track …

A Simulation Modeling Approach To Central City Dynamics, Leonard William Schaper Jr.

Dissertations

This dissertation describes a computer simulation model of a central city with emphasis on its application to Newark, New Jersey. The work begins with a review of the Forrester Urban Dynamics Model; the first attempt to simulate the entire system of the city. The objections to this model which have appeared in the literature are discussed, and the model is viewed in the light of other work in the field. A set of guidelines to aid the "second generation" model building effort is developed. The actual construction of a model which attempts to follow these guidelines is described. First, the …

Representation And Characterization Of Thixotropic Fluids, Huei-Hsiung Wang

Dissertations

Thixotropy is a time-dependent rheological behavior of a group of fluids which are characterized by an isothermal reversible breakdown induced by a mechanical disturbance. Based on this definition, a mathematical model of reversible degradation kinetics is set up. Its development leads to two equations which represent quantitatively the hysteresis loop and torque-decay curve. These equations consist of five independent parameters with their physical meanings. These parameters can be used to characterize the properties of thixotropic materials.

The original Weissenberg Rheogoniometer was modified to measure the thixotropic behavior of blood with the step change and the ramboid change of shear rate. …

The Effect Of Ultrasonic Vibrations On Heterogeneous Catalysis, William Lintner

Dissertations

The effect of ultrasonic vibrations on the vapor phase decomposition of cumene to benzene and propylene was investigated employing silica-aluminum cracking catalyst.

The catalytic reactor consisted of a 1 cm. diameter stainless steel tube containing a 20 in. long preheater and a 4 in. long catalyst chamber. The catalyst bed was irradiated from above by means of an ultrasonic horn which transmitted acoustical energy directly into the vapor.

The reactor was run at temperatures of 650°F. and 1050°F., frequencies of 26,000 cps and 39,000 cps, feed rates of 20 to 600 gms./hr., power outputs of 0.5 to 1.3 watts/cm.^{2 …}

The Procedural Comparison Method Of Performance Analysis For Comprehensive Community Colleges, Robert Walter Pricer

Dissertations

No abstract provided.

The Stratification And Mobility Of American Sociologists, 1935-1970, Daryl E. Chubin

Dissertations

No abstract provided.

Teacher Expectations: A Study Of The Psychological Contract From The Teachers' Point Of View, Robert C. Atkinson S.J.

Dissertations

No abstract provided.

A Comparison Of The Perception Of Two Groups Of Elementary School Principals Concerning The Exercise Of The Leadership Role In Effecting Change, James Ernest Michaletz

Dissertations

The society of the seventies has been affected by the many substantial and rapid changes that have taken place in recent years. Initially, the changes were in technology, science, and communications. These changes were enthusiastically welcomed, because they made life easier and more enjoyable. However, concomitant with these changes are changes in lifestyle and personal relationships, which, although less evident at first, are having a far more radical influence on the lives of people.

Evaluating The Effectiveness Of An Auto-Instructional Method In The Teaching Of Mathematics In A Community College, Paul Lawrisuk

Dissertations

No abstract provided.

Flynn: A Study Of A.E. Coppard And His Short Fiction, Frank Edmund Smith

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No abstract provided.

A Descriptive Assessment Of Diversity In Bachelor Of Arts And Bachelor Of Sciences Curricula In Schools Of Arts And Sciences, 1970-1971, John H. Borgard

Dissertations

No abstract provided.

The Corporation Of Foreign Bondholders And British Diplomacy In Egypt 1876 To 1882, The Efforts Of An Interest Group In Policy-Making Paul Frank Meszaros, Paul Frank Meszaros

Dissertations

No abstract provided.

The Preparation Of Cis- And Trans-1,2-Dimethoxyethylene. The Study Of The Cis-Trans-Rearrangement And Evaluation Of Equilibrium Constants, James T. Waldron

Dissertations

Equilibrium constants for the mercuric acetate-catalyzed reaction, cis-CH₃ OCH=CHOCH₃ D trans-CH₃ OCH=CHOCH₃, have been determined in the liquid and vapor phase over the temperature range 30° - 175°C by gas chromatography analysis. A novel synthesis of the cis- and trans-isomers of 1,2-dimethoxyethylene is discussed. From a screening of 29 catalysts, mercuric acetate, mercuric benzoate, and mercuric salicylate were found to be favorable isomerization catalysts. For the liquid phase reaction,

ln K = -779.8/T + 0.6748

with ΔH° = +1.549 ± 0.019 Kcal/mole
and ΔS° = +1.34 ± 0.05 e.u./mole

Similarly, for the vapor phase reaction, …

The Relationships Between Two Methods Of Teaching College Biology In Achievement And Attitude, Judson M. Vander Wal

Dissertations

No abstract provided.

A Study Of Non-Transferring Community College Graduates From Selected Michigan Community Colleges, Paul Richard Heath

Dissertations

No abstract provided.