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Articles 6991 - 7020 of 8042
Full-Text Articles in Entire DC Network
A Study Of The Interrelationship Between Personality With Special Reference To Self Concept And Achievement In Reading, Betty F. Feezel
A Study Of The Interrelationship Between Personality With Special Reference To Self Concept And Achievement In Reading, Betty F. Feezel
Masters Theses
No abstract provided.
An Evaluation Of Three Stimulus Media For Eliciting Verbal Language Samples From Educable Mentally Handicapped Children, Shirley E. Baughman Mintun
An Evaluation Of Three Stimulus Media For Eliciting Verbal Language Samples From Educable Mentally Handicapped Children, Shirley E. Baughman Mintun
Masters Theses
No abstract provided by author.
Intensity And Frequency Analyses Of A Sampling Of Modern-Day Rhythm-Blues Music, Carol Mcduffie Hamilton
Intensity And Frequency Analyses Of A Sampling Of Modern-Day Rhythm-Blues Music, Carol Mcduffie Hamilton
Masters Theses
No abstract provided by author.
The Influence Of Newton Bateman On The Illinois School System, Virginia H. Atkins
The Influence Of Newton Bateman On The Illinois School System, Virginia H. Atkins
Masters Theses
No abstract provided.
An Investigation Of Handwriting Traits, Colleen Ann Petty
An Investigation Of Handwriting Traits, Colleen Ann Petty
Masters Theses
No abstract provided.
Studies On Blood Parasites Of Birds In Coles County, Illinois, Edward G. Fox
Studies On Blood Parasites Of Birds In Coles County, Illinois, Edward G. Fox
Masters Theses
No abstract provided.
Studies On The Planktonic Protozoa And Other Microbiota Of A Eutrophic Lake, Neil Howard Chance
Studies On The Planktonic Protozoa And Other Microbiota Of A Eutrophic Lake, Neil Howard Chance
Masters Theses
No abstract provided.
Internship In The Principal's Office Of The Belleville Township High School East, Belleville, Illinois, Aaron W. Phillips
Internship In The Principal's Office Of The Belleville Township High School East, Belleville, Illinois, Aaron W. Phillips
Masters Theses
No abstract provided.
The Design Of A Molten Fueled, Vortex Reactor, For Use As A Rocket Propulsion Device, Robert Philip Schmitt
The Design Of A Molten Fueled, Vortex Reactor, For Use As A Rocket Propulsion Device, Robert Philip Schmitt
Masters Theses
"The purpose of this investigation is to design a nuclear reactor which can be used as a rocket propulsion device. The reactor investigated is fueled with a molten uranium-bismuth alloy and utilizes a two phase vortex flow principle. Hydrogen is employed as a coolant and rocket propellant. The hydrogen is heated directly by the fuel thus eliminating the need for heat exchangers. The major part of the investigation consists of a two group neutron diffusion study to show the operational feasibility of this type of reactor and to obtain an optimum design. the study shows that this type of reactor …
Semiempirical Determination Of The Differential Fast Flux Spectrum For U-235 Fission With Water Moderator, Henry Anthony Till
Semiempirical Determination Of The Differential Fast Flux Spectrum For U-235 Fission With Water Moderator, Henry Anthony Till
Masters Theses
"The differential fast flux spectrum of the UMR Pool Research and Training Reactor core was determined by simultaneous activations of threshold foil detectors by neutron-nucleon reactions. This represents one phase of the composite neutron environment at two sample irradiation locations and the center of a fuel element during a power operation of 200 Kw (th). To accomplish this measurement a semiempirical least-squares approximation fitting activation date to a theoretical Cranberg U-wet fission spectrum was applied. This is a technique designed specifically for water moderated systems and takes into consideration both virgin and down-scatter neutrons. Gamma decay photopeaks were reduced using …
Film Boiling Of Nitrogen From A Spherical Heating Surface At Atmospheric Pressure And Standard Gravity, Juan Jorge MariáNyi
Film Boiling Of Nitrogen From A Spherical Heating Surface At Atmospheric Pressure And Standard Gravity, Juan Jorge MariáNyi
Masters Theses
"A steady state film boiling heat transfer study was conducted at atmospheric pressure, with a heated sphere as the heat transfer surface and liquid nitrogen as the boiling medium. Results indicate that the heat transfer rate in film boiling is not the same around the sphere. For the same heat flux, heat transfer at the sides of the sphere takes place at higher temperatures than at the bottom of the sphere. The data were compared with the equation of Frederking and Clark for spheres (1̲8̲), which was derived to predict steady state conditions at standard, fractional and near zero gravity. …
The Compressibility Of Preconsolidated Till, William H. Koechlein
The Compressibility Of Preconsolidated Till, William H. Koechlein
Masters Theses
"Preconsolidated glacial till was tested "in-situ" with the Geoprobe and in the laboratory on undisturbed soil samples. The two soil testing methods were compared and three tests; consolidation, "thin-cake", and Geoprobe were analyzed to see if a more rapid method for determining the preconsolidation stress of soil could be developed. When comparing Geoprobe results to laboratory results for foundation conditions, it was found the two methods agreed on bearing capacity but differed significantly on settlement. The three tests analyzed for determining the preconsolidation stress indicated they are a function of preconsolidation stress even though there was variation in the test …
The Computer-Aided Generation Of Flow-Tables For Asynchronous Sequential Circuits, Ronald Lee Altman
The Computer-Aided Generation Of Flow-Tables For Asynchronous Sequential Circuits, Ronald Lee Altman
Masters Theses
"One step in the synthesis of asynchronous sequential circuits is the construction of a flow table. This paper discusses the requirements of a computer program to allow on-line generation of flow tables for asynchronous sequential circuits. Such topics as the form of the data entered into the program, the type of terminal required, the routines necessary for the designer to enter and correct data, and the internal data structure are discussed. An algorithm for the generation of these flow tables is also presented"--Abstract, page ii.
The Density Of Horizontal Control In Missouri, Norman Lee Brown
The Density Of Horizontal Control In Missouri, Norman Lee Brown
Masters Theses
"In 1965 the Missouri Legislature passed House Bill 201 adopting the Missouri Plane Coordinate System as computed by the United States Coast and Geodetic Survey. The requirements of this law and the density and distribution of usable control within the state is the topic of this thesis"--Abstract, page ii.
A Study Of A Model-Referenced Adaptive Control System, James William Graham
A Study Of A Model-Referenced Adaptive Control System, James William Graham
Masters Theses
"A model-referenced adaptive controller for a first-order plant with time-varying parameters is developed using Lyapunov's second method. The system is studied with the aid of analogue computer simulation and an oscillatory mode is encountered. A method of reducing the oscillations by addition of a compensating network is proposed. The compensation is obtained through the use of linearization and root locus techniques. The compensated system shows a much improved error response over the original system"--Abstract, page ii.
A Mechanical Metallurgical Method Of Predicting The Springback Tendencies Of A Bent Metal Strip, Jerrold Myles Alyea
A Mechanical Metallurgical Method Of Predicting The Springback Tendencies Of A Bent Metal Strip, Jerrold Myles Alyea
Masters Theses
"Attempted substitution of new solid materials and composite metal strips for those materials presently being used in many applications now being pursued vigorously in industry. A serious problem was created because the newly proposed materials do not exhibit the same springback after bending as did the previously used materials in a particular bend angle and radius situation. Elementary bend theory and mechanical metallurgical techniques have been incorporated into a method which can be used to accurately predict the .2% offset yield strength of any proposed rolled-temper solid metal strip and some composite strips when they must exhibit the same springback …
A Method Of Supervised Pattern Recognition By An Adaptive Hypersphere Decision Threshold, Darroll Steven Mccormack
A Method Of Supervised Pattern Recognition By An Adaptive Hypersphere Decision Threshold, Darroll Steven Mccormack
Masters Theses
"In this study the Bayes likelihood detector is combined with an adaptive decision threshold classifier to solve the multicategory pattern recognition problem. It is assumed that the pattern classes can be represented by an n-dimensional vector sample taken from a multivariate gaussian probability distribution. This study presents (1) the derivation of the A̲daptive H̲ypersphere D̲ecision T̲hreshold classifier (AHDT classifier) and shows (2) how the AHDT classifier minimizes the probability of error using the learning patterns. Finally the AHDT classifier is applied to the solution of a physical problem through computer simulation"--Abstract, page ii.
Geochemical Abundance Of Iodine, Jane Hanisch Bennett
Geochemical Abundance Of Iodine, Jane Hanisch Bennett
Masters Theses
"The research reported herein includes unpublished iodine and uranium data on a group of United States Geological Survey standards and on a group of ultrabasic rocks. Data are also included for the major rock types, deep sea sediments, and for graphite and troilite inclusions in iron meteorites. Tellurium data for the troilite are also reported. Appendix I is a literature article (Bennett and Manuel, 1967a) on Canyon Diablo Graphite. Appendix II is a literature article (Bennett and Manuel, 1967b) on deep sea sediments. The results of this study show that most of the earlier estimates of the crustal abundance of …
Permeability And Additive Sorption And Extraction In Lubricating Greases, Chan-Shan Fan
Permeability And Additive Sorption And Extraction In Lubricating Greases, Chan-Shan Fan
Masters Theses
"The effect of the area and type of surface of ten silica thickeners and aluminum oxide on grease permeability, on the sorption of PAN [Phenyl-α-naphthylamine] by the grease, and on subsequent extraction were studied. For grease containing 6% per cent of thickener, permeability coefficients varied from 20.1 x 10⁻¹¹ cm² to 168 x 10⁻¹¹ cm². For each silica type they decreased with increase in surface area of the thickener. The level of the permeability coefficient is generally related to the worked penetration. In sorption measurements using permeating oils of varying PAN concentration, the amount of PAN associated with the thickener …
Electronic Transitions In Diatomic Molecules, James O. Hornkohl
Electronic Transitions In Diatomic Molecules, James O. Hornkohl
Masters Theses
"The electronic transition moments of many band systems have been found to be linear functions of the internuclear distance. However, some band systems exhibit a quadratic variation of the transition moment. In these quadratic cases, the plots from which the variation of the transition moment is determined are based upon the approximation of the second r-centroid by the square of the first r-centroid. The square of the first r-centroid does closely approximate the second r-centroid by a simple error analysis shows that the small difference between the two is not a quantitative measure of the error introduced into the transition …
Synchronization Of Pulse Code Modulation Telemetry, Lawrence J. Mueller
Synchronization Of Pulse Code Modulation Telemetry, Lawrence J. Mueller
Masters Theses
"Pulse Code Modulation (PCM) is one of the most widely utilized radio telemetry techniques for the recovery of test data from aerospace vehicles. Synchronization of the receiver with the transmitted data is perhaps the prime requisite of a PCM telemetry system. In this paper the frame synchronization process is analyzed by developing equations which define the three modes of synchronizer operation (SEARCH, VERIFY, and LOCK) in terms of the relative probabilities of operation. The criteria employed to optimize the synchronization process are the mean time to acquire true synchronization, the probability of true synchronization after verification of the synchronization decision, …
A Computer Adaption Of Plastic Analysis For Rigid Frames, Gerald Duane Galloway
A Computer Adaption Of Plastic Analysis For Rigid Frames, Gerald Duane Galloway
Masters Theses
"A computer program for the plastic analysis of rigid frames is presented. The program is based on the virtual work method of plastic analysis. The great number of failure mechanisms that must be considered in any virtual work analysis are given in Appendix C. The use of the program as a design aid is also discussed. A check for the virtual work program is also presented. The check is based on the method of inequalities as initially presented by Symonds and Neal"--Abstract, page ii.
A Study Of Bifeo₃ And The Hall Effect In Bifeo₃ And Cds, Fred Hoerger Taylor
A Study Of Bifeo₃ And The Hall Effect In Bifeo₃ And Cds, Fred Hoerger Taylor
Masters Theses
"Pure samples of BiFeO₃ were heat treated in oxygen and nitrogen atmospheres in an attempt to reduce the conductivity of the samples. Dielectric constant and dissipation factor measurements, as a function of frequency, were made to determine whether the samples had been altered. A special high temperature Hall effect apparatus was constructed. Using this apparatus an upper limit for the Hall mobility in BiFeO₃ was established. The apparatus was also used for room temperature measurements of Ga-doped CdS samples. Resistivity measurements to be used with the Hall effect results were made on both the BiFeO₃ and the CdS samples. Hot-Point …
Measurement Of Demagnetizing Factor Of Ring-Core, Subhashchandra Chimanlal Patel
Measurement Of Demagnetizing Factor Of Ring-Core, Subhashchandra Chimanlal Patel
Masters Theses
"A method has been presented to measure the demagnetizing factor of ring-cores. First the incremental apparent permeability and the incremental true permeability were measured at different degrees of saturation and then the demagnetizing factor was determined from those results. The cores used were tape would ring-cores of mean length of 8.0 cm. The method was found suitable for cores with 1/4 mil or thicker tape, but was in question for the 1/8 mil tape core tested"--Abstract, page ii.
A Comparison Of Three Numerical Techniques Used For The Solution Of The Two-Point Boundary Value Problem, William Richard Krall
A Comparison Of Three Numerical Techniques Used For The Solution Of The Two-Point Boundary Value Problem, William Richard Krall
Masters Theses
"Three numerical approximation techniques, called the Initial step, Shooting, and Direct Finite Difference Techniques, respectively, are compared and discussed as they apply to the solution of both linear and non-linear boundary-value problems of the form y"=f(x,y,y') with endpoint conditions y(xo)=yo and y(xn)=yn. The techniques are compared with respect to speed and accuracy by comparing the solution of each problem considered four times, each time for a different increment value, and comparing the errors at four pivotal points chosen at equally spaced distances over the domain of the function, to give an indication of …
Surface Interactions Between Nickel Ions And Sodium Dodecyl Sulfate, Ralph Edward Coleman
Surface Interactions Between Nickel Ions And Sodium Dodecyl Sulfate, Ralph Edward Coleman
Masters Theses
"In this research the interaction of nickel ions with the surfactant sodium dodecyl sulfate at the liquid-air interface was studied. Surface tension measurements were performed on pure sodium dodecyl sulfate solutions, with and without the addition of nickel ions. Results of these measurements showed that the addition of nickel ions lowered the equilibrium surface tension values of pure sodium dodecyl sulfate solutions and shifted the critical micelle concentration to lower concentrations. The foam fractionation technique was used to determine if the nickel ions could be removed from surfactant solutions. It was found that the removal of nickel ions was influenced …
Determination Of Molecular Diffusivities In Liquids, Pai-Chuan Wu
Determination Of Molecular Diffusivities In Liquids, Pai-Chuan Wu
Masters Theses
"A porous plate, initially at a uniform solute concentration is immersed in a well-stirred pure solvent bath of known volume. It is desired to find the molecular diffusivity of the solute-solvent system by observing the change of the solute concentration in the solvent bath with time. In this study, concentration-time data were curve-fitted by non-linear, least squares techniques to the various mathematical solutions describing molecular diffusion in the porous frit. This technique is used to determine the diffusion coefficient and predict the value of other parameters existing in the different mathematical diffusion models. The results from the different models are …
Lattice Parameters, Coefficients Of Thermal Expansion, Densities, And Lattice Perfection Of The Copper-Indium Primary Solid Solutions, Lin Sheng Yu
Masters Theses
"Precise measurements of lattice parameters and densities of the alpha-phase Cu-In solid solutions were made at temperatures of 25°C. The thermal expansion coefficients between 15 and 65°C, the solid solubility of In in Cu at 650°C, and the soundness of crystal structure resulting from alloying were determined. The Cu-In alloys were prepared from high purity (99.999%) Cu and In by melting both metals inside evacuated quartz tubes. The solidified alloys were annealed and then examined by X-ray for homogeneity...The slowly solidified alpha-phase alloys gave densities lower than the theoretical (X-ray) values due to the presence of shrinkage microporosity. This density …
Drag Reduction In Hydrocarbon Soap Solutions, Ian Radin
Drag Reduction In Hydrocarbon Soap Solutions, Ian Radin
Masters Theses
"Turbulent flow pressure drop measurements were made for solutions of aluminum dioleate (soap) in toluene at concentrations of 0.2, 0.5, 0.75 and 1.0 per cent. Tube diameters ranged in size from 0.01 to 2.0 inches. The results of these measurements differed from those observed in aqueous systems. Higher concentrations (at least 0.75 per cent) were required before drag reduction was observed. Although fresh solutions were somewhat sensitive to shearing, once a solution was over about two weeks old it showed little further mechanical degradation. Although in the toluene solutions, wall shear stresses were reached which were over an order of …
The Numerical Solution Of Two-Dimensional Fluid Flow Problems, E. David Spong
The Numerical Solution Of Two-Dimensional Fluid Flow Problems, E. David Spong
Masters Theses
"A numerical solution method is developed for the solution of two-dimensional, irrotational and compressible fluid flow problems. The partial differential equation, in terms of the velocity potential, describing the flow is replaced by finite difference equations and the resulting matrix is solved by Gaussian elimination. The method is successfully applied to two subsonic flow problems: a 7.5⁰ wedge and a 6⁰ wedge inlet. The method becomes invalid, as expected, with the appearance of sonic velocity in the flow field. An investigation of the definition of the singularities is made. This indicates that the best agreement with the experimental results for …