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Articles 5071 - 5100 of 6589
Full-Text Articles in Entire DC Network
A Study Of The Generality Of The Herzberg Two-Factor Theory Of Motivation To Elements Of The Chronically Underemployed And Unemployable Population, John R. Murray
Masters Theses
No abstract provided.
Ten Hours Or No Sawdust: A Study Of Strikes In The Michigan Lumber Industry 1881-1885, Daniel J. Yakes
Ten Hours Or No Sawdust: A Study Of Strikes In The Michigan Lumber Industry 1881-1885, Daniel J. Yakes
Masters Theses
No abstract provided.
Generalization Of A Matching Discrimination, Klaus E. Liebold
Generalization Of A Matching Discrimination, Klaus E. Liebold
Masters Theses
No abstract provided.
Comfort Climates At Grand Rapids, Michigan: A Dynamic Approach, Robert L. Janiskee
Comfort Climates At Grand Rapids, Michigan: A Dynamic Approach, Robert L. Janiskee
Masters Theses
No abstract provided.
Reinforcement Of Sitting Behavior In Retardates In An Institutional Setting, Robert James Bonner
Reinforcement Of Sitting Behavior In Retardates In An Institutional Setting, Robert James Bonner
Masters Theses
No abstract provided.
The Influence Of Extrinsic And Intrinsic Decision Factors On Company Selection Among College Seniors, Lawrence J. Hahn
The Influence Of Extrinsic And Intrinsic Decision Factors On Company Selection Among College Seniors, Lawrence J. Hahn
Masters Theses
No abstract provided.
A Survey Of Junior High School Industrial Arts In Selected Counties In Illinois, Martin W. Pattin
A Survey Of Junior High School Industrial Arts In Selected Counties In Illinois, Martin W. Pattin
Masters Theses
No abstract provided by author.
Some Aspects Of Aerated Open-Channel Flow At Shallow Depths And Low Velocities, D. L. Fread
Some Aspects Of Aerated Open-Channel Flow At Shallow Depths And Low Velocities, D. L. Fread
Masters Theses
"This study is concerned with the effect of entrained air bubbles on the open-channel hydraulics of water flowing at low velocities. The air bubbles are introduced into the flowing water by injecting diffused compressed air along the channel bottom. The variations of the velocity profile and velocity distribution energy coefficient of aerated and nonaerated flow are discussed. Empirical equations have been determined for the air concentration and increased depth of flow or "bulking" of the aerated open-channel flow. The investigation revealed a significant increase in the Manning roughness coefficient and the related Darcy friction factor for aerated flow relative to …
A Study Of The Nucleate Boiling Of Liquid Nitrogen, Liquid Argon, And Liquid Carbon Monoxide From Atmospheric To Near The Critical Pressure, Craig Bauer Johler
A Study Of The Nucleate Boiling Of Liquid Nitrogen, Liquid Argon, And Liquid Carbon Monoxide From Atmospheric To Near The Critical Pressure, Craig Bauer Johler
Masters Theses
"The nucleate boiling curves of three corresponding states liquids (nitrogen, argon, and carbon monoxide) were analyzed. Each liquid was studied at pressures ranging from atmospheric pressure to near the critical pressure. Saturated liquid boiling was conducted from cylindrical heaters in the horizontal position having diameters of 0.75 inches and lengths of three inches. Liquid nitrogen was boiled from four different gold heat transfer surfaces; argon and carbon monoxide were boiled from the same gold surface. The critical heat flux correlation of Cobb and Park was further verified by agreement with the experimental critical heat flux ratios obtained in this investigation. …
An Analysis Of A Standardized Digital Circuit Driving A Coaxial Cable, John Pitkin Lappington
An Analysis Of A Standardized Digital Circuit Driving A Coaxial Cable, John Pitkin Lappington
Masters Theses
"The expense of developing new circuit designs has forced electronic manufacturers to develop and use multipurpose circuits that can be adapted to fit many requirements. Sometimes this procedure leads to problems that would not have occurred if a circuit, designed to fit a particular application, had been developed. One problem of this type deals with the effect of improperly terminated coaxial cables loading output signals from a digital computer. The unterminated cable reflected the signal back in the computer. This did not affect the putout stage, but the preceeding [sic] driving stage was affected. The degradation of the output of …
The Effect Of Structure On The Consolidation Of Compacted Unsaturated Clay Soils, William Joseph Graham
The Effect Of Structure On The Consolidation Of Compacted Unsaturated Clay Soils, William Joseph Graham
Masters Theses
"Contained in this paper are the results of research which was performed to investigate the relation between the volume-change mechanisms of shrinkage and one-dimensional compression for two clay soils, including some samples whose structures had been altered by the addition of flocculating and dispersing agents. Shrinkage tests were conducted with a special mold designed to facilitate the study of a soil's shrinkage path. consolidation tests on undisturbed samples and one-dimensional compression tests on unsaturated samples compacted in the vicinity of optimum moisture content were performed. A detailed study was made of a highly plastic red Missouri clay. Complications arose in …
System Definition Of A Small, Economical General Purpose Computer, Thomas Elden Kreger
System Definition Of A Small, Economical General Purpose Computer, Thomas Elden Kreger
Masters Theses
"The major differences between commercially available electronic calculators and the small, general purpose computer are discussed. A computer system organization is proposed with low cost, physical compactness and user convenience as design objectives. In addition, a system block diagram and a set of micro-instructions are postulated. These micro-instructions are micro-programmed to provide floating point arithmetic capability and a library of function generating sub-routines"--Abstract, page ii.
A Lyapunov Designed Model-Referenced Control System With Signum Function Adaptive Control Laws, James Steven Epstein
A Lyapunov Designed Model-Referenced Control System With Signum Function Adaptive Control Laws, James Steven Epstein
Masters Theses
"An examination of a model-referenced adaptive control system designed to satisfy the requirements of Lyapunov's direct method is made. It is found that each adaptive control loop requires a multiplier for its implementation. A new design is proposed which replaces the multipliers in the control loops by switches, thereby gaining a significant hardware advantage. A first order system designed by the new method is simulated on an analog computer and some refinements are made. The method is then generalized to include nth order systems. The poles of the model, however, are subject to some restrictions. Finally, the problems associated with …
Some Effects Of Lead-Zinc Mining Wastewater On A Stream Environment, Anthony Ralph De Alonso Handler
Some Effects Of Lead-Zinc Mining Wastewater On A Stream Environment, Anthony Ralph De Alonso Handler
Masters Theses
"The continuous discharge of lead-zinc mine and mill wastewater into some streams in southeastern Missouri may alter the ecology of those streams. A field and laboratory study was conducted to evaluate the potential pollution problem. Bee Fork Creek, the first stream in that area to receive tailings from mining operations, was selected for this study and periodically surveyed. Laboratory tests included static bioassays of lead, zinc, and copper, and the mode of action of the metals was investigated through post-mortem examination of the experimental fish. The test animals used in the bioassays were bluegill sunfish (Lepomis macrochirus, Rafinesque). The heavy …
Effect Of Hydrostatic Pressure On Anelastic Stress Relaxation In A Mixed-Alkali Silicate Glass, Young-Gil (Gilbert Y.) Kim
Effect Of Hydrostatic Pressure On Anelastic Stress Relaxation In A Mixed-Alkali Silicate Glass, Young-Gil (Gilbert Y.) Kim
Masters Theses
"The effect of hydrostatic pressure on the anelastic stress relaxation of a mixed-alkali silicate glass (0.05 Na₂O, 0.95 K₂O, 3 SiO₂) was studied at 75°C between ambient pressure and 6 kbar. The activation volume of diffusion was found to be - 4.2 cm³/mole. It is proposed that a reequilibration of the defect population at pressure gives rise to the negative activation volume of diffusion"--Abstract, page ii.
The Electrodeposition Of Zinc; Changes In Current Efficiency And Surface Structure Resulting From Various Addition Agents, Haruhisa Fukubayashi
The Electrodeposition Of Zinc; Changes In Current Efficiency And Surface Structure Resulting From Various Addition Agents, Haruhisa Fukubayashi
Masters Theses
"An examination of the surface structure of zinc electrodeposited from an acid-sulfate solution was made by scanning electron microscopy techniques. The current efficiencies were also determined, to a lesser extent, in order to correlate the results with the surface structures. Commercial and pure zinc oxide were used to prepare the neutral zinc sulfate solutions. The starting solutions were in a range of acid and zinc concentrations commonly used in commercial practice. Changes in morphology resulting from addition agents such as animal glue, gum arabic, and sodium silicate are compared"--Abstract, page ii.
Laboratory Measurement Of Pore Water Pressure Induced By A Model Friction Pile, Charles Alfred Miller
Laboratory Measurement Of Pore Water Pressure Induced By A Model Friction Pile, Charles Alfred Miller
Masters Theses
"This research program has been undertaken to develop a laboratory testing procedure for the measurement of pore water pressure induced by the static loading of a model friction pile. Most of the investigation involved the design, construction, and testing of equipment to be used during the tests which would produce satisfactory and reliable results. It was also desired to simulate field conditions during the tests. A series of tests were performed varying the consolidation pressure on the soil around the model pile. The effects of changing the location of the pore pressure measurements was also investigated. Results of the tests …
Correlation Of Particulate Theory And Behavior Of Real Soils, Christopher Byron Groves
Correlation Of Particulate Theory And Behavior Of Real Soils, Christopher Byron Groves
Masters Theses
"The behavior of granular soils subjected to triaxial stresses can be explained in terms of a combination of elastic deformation and sliding friction. Three sans and a coarse silt at various initial void ratios were tested in drained triaxial compression. Cell pressures were varied between 50 and 1500 psi. Prediction techniques for simulating laboratory data was based on various packings of equal radii spheres. Equilibrium and compatibility equations were used to calculate the principal strains under certain applied stresses. The assumed arrays predicted much smaller strains than those than the soils exhibited. If these strains were subtracted from those observed, …
State Assignments For Non-Normal Asynchronous Sequential Circuits, Gary Keith Maki
State Assignments For Non-Normal Asynchronous Sequential Circuits, Gary Keith Maki
Masters Theses
"There is a lack of procedures that can be used to find good internal state assignments for asynchronous sequential circuits operating in the non-normal mode. Presented here, are two generalized state assignments, which are functions only of the number of rows in a flow table. The suggested bounds for the generalized state assignments are m + [log₂m] and m + [m/2] internal state variables for a 2m-row flow table, where [ ] means "next lowest integer". Both generalized state assignments produce group (linear) codes. The algorithms for generating these internal state assignments are easy and straight-forward to implement. …
A Comparison Of Lumped Parameter Models Commonly Used To Describe One-Dimensional Vibration Problems, Suresh Kumar Tolani
A Comparison Of Lumped Parameter Models Commonly Used To Describe One-Dimensional Vibration Problems, Suresh Kumar Tolani
Masters Theses
"Three lumped parameter model representations of the one-dimensional uniform continuous system in a vibration state are examined. The exact (continuous) solutions were used as a reference to evaluate the accuracy of the results obtained via these discrete element models. The model comparisons, carried out for both the principal modes and the systems under forced excitations, are based on the maximum strain energy. The effect of varying the number of segments in the model representation showed improvement in approximating the exact strain energy solution as the number of segments was increased. In general, the results of the model comparisons based on …
The Analysis Of R-S-S-R Spatial Four-Bar Mechanism, David Perng Chyi
The Analysis Of R-S-S-R Spatial Four-Bar Mechanism, David Perng Chyi
Masters Theses
"Although many methods are known for the kinematic analysis of spatial mechanisms, such as descriptive geometry, vector analysis, dual number theory, matrices, screw calculus, and various other methods, a better way to analyze the specific R-S-S-R four-bar mechanism is to use tensor methods in order to eliminate the apparently formidable and tedious tasks of mathematically formulating problems and obtaining solutions. The analysis described in this paper is developed basically by using tensor notations and operations, and the calculations take advantage of the capabilities of modern digital computers. A FORTRAN program for the IBM 360 Data Processing System which will analyze …
An Experimental Comparison Of Various Nuclei Counters, Joel William Mansell
An Experimental Comparison Of Various Nuclei Counters, Joel William Mansell
Masters Theses
"A series of simultaneous nuclei concentration measurements, with four different nuclei counters, have been made. these counters were a Pollak and a Gardner counter supplied by Mr. Paul Allee of the Environmental Science Services Administration, Boulder, Colorado, and a Pollak and a G.E. counter supplied; by Mr. Norman White of the National Center for Air Pollution Control, Cincinnati, Ohio. In the absence of any knowledge of the absolute concentrations in the samples, the data for each of the individual counters have been compared to the averages computed from all four counters. The results of these comparisons indicate the following: (1) …
The Use Of Turbulence Energy Equation In Boundary Layer Study, Ro-Chi Tai
The Use Of Turbulence Energy Equation In Boundary Layer Study, Ro-Chi Tai
Masters Theses
"A turbulent boundary layer problem has been studied analytically and compared with an available experiment in the literature. Correlations of the experimental data were made to investigate the validity of the commonly used empirical relations on turbulent shear stresses. It was found that the model which related the local turbulent shear stress linearly with the local turbulent kinetic energy, as used by Bradshow et. al., appeared to be most reasonable. combining this model with the expression of turbulent viscosity given by Boussinesq, it was then possible to introduce the turbulence-energy equation in addition to the governing equations of continuity and …
A Theoretical Analysis Of The Free Vibrations Of A Clamped Circular Plate With Damping, Bhalchandra Krishnaji Vaidya
A Theoretical Analysis Of The Free Vibrations Of A Clamped Circular Plate With Damping, Bhalchandra Krishnaji Vaidya
Masters Theses
"A theoretical analysis of the free vibrations of a clamped circular plate was undertaken. The effects of transverse shear were considered for application to relatively thick plates in which there exist sharp transients and frequencies corresponding to higher modes. The method adopted by R. D. Mindlin was used to develope [sic] the differential equation of motion for the plate. The damping effect due to the resistance of the medium in which the plate vibrates was also considered. This damping was assumed to be due to the generation of pressure waves caused by the displacement of the plate...Since the solution requires …
Criteria For Planning A Mobile Home Park Development In Rural Areas, Richard Euguene Sharp
Criteria For Planning A Mobile Home Park Development In Rural Areas, Richard Euguene Sharp
Masters Theses
"The object of this study was to determine the possibility of developing a mobile home park as a partial solution to the problem of inadequate housing in rural communities. The investigation involved the study of modern mobile homes and mobile home parks, mobile home dwellers, and the social and economic aspects of mobile home living. It was suggested that a properly designed and managed mobile home park can provide a satisfactory location for the placement of mobile homes. The small down payment and low monthly payments associated with purchasing a mobile home, along with the inherent mobility of mobile home …
Computer-Aided Design Of Lossless Non-Uniform Transmission Lines, Larry Lee Wesner
Computer-Aided Design Of Lossless Non-Uniform Transmission Lines, Larry Lee Wesner
Masters Theses
"A numerical iterative design technique is presented for the synthesis of lossless non-uniform transmission lines. A variational approach is used to minimize an error functional to which the system and boundary equality constraints have been adjoined by Lagrangian multipliers. The resultant network optimization conditions lead to an iterative scheme requiring analysis of the non-uniform line, analysis of an adjoint system and calculation of the error gradient in parameter space. A steepest descent procedure is used to optimize parameter values. Finite difference equations are used to provide an approximation model for implementation on the digital computer. A design example and a …
A Digital Technique For Combining Frequency Standards, Lynn James Hawkey
A Digital Technique For Combining Frequency Standards, Lynn James Hawkey
Masters Theses
"A new technique for combining multiple frequency standards into a single timing reference based on the average of the frequency of each input is described. The uniqueness of this approach is that it is an all-digital scheme utilizing delay lines and high-speed logic elements currently available. The present and future applications of combiners are discussed, the requirements are highlighted, several digital solutions are briefly described, and the detailed block diagrams and characteristics of a particular general purpose combiner are presented. It is suggested that the optimum combiner include a stable quartz crystal oscillator with a frequency control feature. The output …
A Design Oriented Digital Design Language, David Michael Rouse
A Design Oriented Digital Design Language, David Michael Rouse
Masters Theses
"A digital design language is presented here which is more consistent with the design sequence of digital computer than existing languages. An ideal design sequence is first investigated and the following desirable design language characteristics obtained. A good design oriented language must be: 1) multi-level, 2) capable of expressing ideas easily, 3) easily understood, 4) machine acceptable, 5) modular and, 6) capable of showing timing and control. It should also be: 1) independent of technology, 2) unrestricted to any particular structural feature such as serial processes, synchronous processes, etc., 3) concise, 4) precise, and 5) non-ambiguous. With regard to these …
An Investigation Of Transient Negative Resistance In A Cadmium Sulfide Device, John Irvin Giem
An Investigation Of Transient Negative Resistance In A Cadmium Sulfide Device, John Irvin Giem
Masters Theses
"An analysis has been made of a CdS device which exhibits a transient negative resistance at room temperature and low field strengths whereas previously reported cases of negative resistance in CdS were observed at low temperatures and moderate to high electric fields. The CdS bar was illuminated on one end in the vicinity of an ohmic In contact. Contact was made to the other end of the device with a rectifying Ag contact and the device was reverse biased. Experimental evidence and the analytical results both indicated that it is necessary that the material used to make the negative resistance …
Precipitation Hardening Of A Mg - 3.5 Wt. % Th - 1. Wt. % Mn Alloy, Adolf Chun-Chiung Huang
Precipitation Hardening Of A Mg - 3.5 Wt. % Th - 1. Wt. % Mn Alloy, Adolf Chun-Chiung Huang
Masters Theses
"The precipitation process in a Mg - 3.5 wt. % Th - 1. wt. % Mn alloy during aging at 260⁰, 350⁰ and 400⁰C was determined principally by transmission electron microscopy. At 350⁰ and 400⁰C, general precipitation of the equilibrium Mg₄Th phase moderately hardens the alloy. No transition lattice of this phase was seen. The Mg₄Th precipitate forms initially as disc shaped plates parallel either to the prism or basal plane of the matrix...During prolonged aging at 400⁰C the plates lengthen into long laths on either of the above planes in the close packed direction...At 260⁰C an unidentified G. P. …