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Articles 5161 - 5190 of 6589
Full-Text Articles in Entire DC Network
Scraped-Surface Heat Exchange, Kyung Jun Park
Scraped-Surface Heat Exchange, Kyung Jun Park
Masters Theses
"An experimental study was made to test a theory developed for scraped-surface heat exchange. The apparatus was a cylindrical vessel equipped with two blades and baffles, cooled in an ice bath. The experiments showed the approach of dimensionless temperature deviated greatly from the theoretical prediction. It was found that part of this effect was the result of a change in temperature of the scraped wall, which could be accounted for by using the overall heat transfer coefficient between the cooling medium and the apparatus. Measurements on water showed the cooling rate to be much faster than the theory would predict. …
Investigation Of Target Detection In Noncoherent Systems With Colored Noise, Edward Windsor Bailey
Investigation Of Target Detection In Noncoherent Systems With Colored Noise, Edward Windsor Bailey
Masters Theses
"Design efforts concerning the problem of detecting moving ground targets from an airborne platform with a noncoherent radar have been concentrated in the area of video filter design. The filter formulation generally follows an empirical path with no generally acceptable criterion for an optimum processor. This Thesis considers several problem formulations which are based on a Neyman-Pearson detection criteria. A square-law second detector is assumed and the resulting likelihood ratio shown to be too complex for closed form solution. The problem is reformulated in terms of sequences using complex random variable representations and the likelihood ratio is investigated. A test …
The Anodic Dissolution Of Molybdenum In Alkaline Solutions, Chen Hwei Chi
The Anodic Dissolution Of Molybdenum In Alkaline Solutions, Chen Hwei Chi
Masters Theses
"Details concerning the anodic dissolution of many metals in various solutions are still unknown. Discrepancies are found between the actual weight-loss of an electrode and that calculated from coulometric data. The purpose of this investigation was to study the anodic dissolution of molybdenum (Mo) in basic solutions to determine the apparent valence of Mo ions going into solution, the nature of any surface films formed during dissolution, and the polarization behavior. Three electrolytes were used: 1 N potassium hydroxide (pH = 13.6), 0.667 N potassium carbonate (pH = 11.5), and potassium carbonate-potassium sulfate mixture (pH = 9.5). chloride ion additions …
An Impact Sensitivity Study Of Reactive Materials, Carl E. Delong
An Impact Sensitivity Study Of Reactive Materials, Carl E. Delong
Masters Theses
"The impact sensitivity of a potassium chlorate, stabilized red phosphorous, Quso, and magnesium oxide mixture in a 34/14/4/2 ratio has been found to be about 18 ł 5 gram-centimeters for a 50% sensitivity to initiation. Chi-square tests at the 95% confidence level have determined that it is not possible to reject the hypothesis that the distribution is either normally distributed or log-normally distributed within the 50% range. Humidity, aging, and some additives were found to desensitize the mixture. Energy versus drop weight and test height curves show that momentum considerations are crucial over large test ranges in studies of impact …
Stochastic Simulations Analysis And Determination Of Iteration Requirements, James Walter Smith
Stochastic Simulations Analysis And Determination Of Iteration Requirements, James Walter Smith
Masters Theses
"A thorough analysis of computerized stochastic simulation problems has been undertaken to determine the number of iterations (or random draws) necessary to achieve a required degree of output accuracy. The basic problem is to determine when the sampled output mean and standard deviation are within specified accuracy limits. An error analysis is made of the statistical properties of deterministic-probablistic [sic] and logic (random walk) type problems. A recommendation for determining the number of problem iterations required is then presented"--Abstract, page ii.
Sorption And Desorption Of Chlorinated Hydrocarbon Pesticides By Clay Minerals, Cheng Sun Liao
Sorption And Desorption Of Chlorinated Hydrocarbon Pesticides By Clay Minerals, Cheng Sun Liao
Masters Theses
"This thesis describes the sorption and desorption of chlorinated hydrocarbon pesticides by clay minerals under laboratory controlled environmental systems. Particular emphasis was directed toward the investigation of the fundamental adsorption phenomena which occurred in selected pesticide-clay systems. the effects of certain environmental stresses, including pH, temperature and salt (NaCl) concentration of water, on the behavior of sorption and desorption were also studied. Pesticides selected for this study included DDT, dieldrin and heptachlor, and clay minerals employed were kaolinite, montmorillonite and illite. The adsorption rate and equilibrium were evaluated by batch techniques employing completely mixed systems while the effects of the …
Failure Analysis Of Binary Address Decoders, Kanaiyalal Jekisondas Gandhi
Failure Analysis Of Binary Address Decoders, Kanaiyalal Jekisondas Gandhi
Masters Theses
"This paper describes the organization and failure analysis of various types of binary address decoders. Logical type faults are considered and all possible faulty output patterns, resulting from these faults, are derived. A basic theory is developed, showing that these failure patterns are independent of the decoder size and organization. Digital simulation programs were used as an aid in the development of this theory. Results of the simulation are provided in the appendix"--Abstract, page ii.
Fault Diagnosis Of Sequential Circuits, Virgil Willis Hughes
Fault Diagnosis Of Sequential Circuits, Virgil Willis Hughes
Masters Theses
"Compared to the problem of combinational network (CN) diagnosis, that of sequential network (SN) diagnosis has been an extremely difficult one. Present techniques of SN diagnosis are difficult to apply, and generally lead to lengthy test schedules or additional logic. This paper presents a new approach to the SN diagnostic problem which results in a substantially simpler technique than those found in the literature. The approach is to modify the SN so that it can be diagnosed from a combinatoric point of view. This is accomplished by the addition of outputs for testing purposes to certain lines in the circuit--no …
Stratigraphy And Economic Geology Of Uranium-Bearing Sediments In The Poison Spider District, Natrona County, Wyoming, Carlos Enrique Reijenstein D'Acierno
Stratigraphy And Economic Geology Of Uranium-Bearing Sediments In The Poison Spider District, Natrona County, Wyoming, Carlos Enrique Reijenstein D'Acierno
Masters Theses
"Geologic, stratigraphic, and mineralogic characteristics of the Eocene Wind River and Oligocene White River Formations were determined for the southern portion of the Poison Spider District, Natrona County, Wyoming. Sieve analysis and heavy mineral techniques were used to recognize stratigraphic units, determine their environment of deposition, obtain a better knowledge of the grain size distribution, and to identify a possible source area for the sediments. Particular emphasis was concentrated on the evaluation and interpretation of the available geophysical data (gamma ray and resistivity logs), and geological information which had led to the establishment of several relationships between the local geology …
Numerical Simulation Of Pressures In A Radical System, Vijender Nath Gopal
Numerical Simulation Of Pressures In A Radical System, Vijender Nath Gopal
Masters Theses
"The time-space location of an advancing front has been described in such a manner as to permit the calculation of frontal pressures when a heterogeneous (in permeability) radial system is subjected to water encroachment. A finite difference application has been developed to calculate these pressures at specified radial distances from the injection or production wellbore. These pressure have been further utilized to predict the pressures at the advancing front for different time intervals"--Abstract, page iii.
A Computerized Method For Finding The Dynamic Response Of Multi-Mass Systems With Damping To Arbitrary Inputs, Bakulesh Balbhadra Patel
A Computerized Method For Finding The Dynamic Response Of Multi-Mass Systems With Damping To Arbitrary Inputs, Bakulesh Balbhadra Patel
Masters Theses
"A practical procedure for the systematic application of Foss's method to the solution of multi-degree-of-freedom damped systems is presented. It is relatively easy to determine the response of classically damped systems to various inputs. For non-classically damped systems the method proposed by K. A. Foss has been employed. This method gives an exact and complete solution for the response of linear multi-mass damped systems subjected to arbitrary inputs. Since the method requires lengthy and complex computations, the use of a digital computer is essential. In order to obtain the complete response of a multi-mass damped system to both sinusoidal and …
A Geochemical Study Of The Maquoketa Formation In Pike County, Missouri, John Siegfried Trapp
A Geochemical Study Of The Maquoketa Formation In Pike County, Missouri, John Siegfried Trapp
Masters Theses
"Statistical interpretation of geochemical data was used to determine the environment of deposition of the Maquoketa Formation in Pike County, Missouri. A cyclic sequence was noted which can be best explained by cyclic climatic changes. During the study it was found that elemental relationships which would be expected in a freshly deposited sediment can be found in core samples. In samples from outcrops and quarry faces these relationships have been destroyed. As these elemental relationships reflect mineralogical relationships, serious doubts have arisen as to the validity of petrographic studies of samples taken from outcrops. This study indicates weathering may be …
Neutron Induced Changes To The Modified Ebers-Moll Transistor Model Used In The Net-1 Program, Kenneth Robert Smith
Neutron Induced Changes To The Modified Ebers-Moll Transistor Model Used In The Net-1 Program, Kenneth Robert Smith
Masters Theses
"The development of theoretical and empirical relations which predict the permanent changes to the electrical characteristics of silicon transistors is described in this paper. Analytical techniques are also developed to obtain the parameters used in the Modified Ebers-Moll transistor model. The method employed is to determine the effects on externally measurable characteristics and to relate these changes to the parameters in the Modified Ebers-Moll transistor model. Further, all nonlinear characteristics are related to the independent variables with interpolating polynomials and degraded characteristics presented. then degraded characteristics are used to establish the parameters for and parameter changes to the transistor model …
An Aggregate Quality Investigation Of The Meramec River Gravels, Kadri Ercin Kasapoglu
An Aggregate Quality Investigation Of The Meramec River Gravels, Kadri Ercin Kasapoglu
Masters Theses
"This thesis represents a study which was made to evaluate and interpret the downstream variations in the quality of the Meramec River gravels as coarse aggregate for concrete. Since gravel deposits constitute a valuable resource for a region, it is desirable that extent and quality variations of these deposits are known. It was hoped that an evaluation of certain properties of the Meramec River gravels would assist in determining the value of the Meramec River as undeveloped aggregate source by indicating the relative quality of the gravels from alternate sites of the river. For the purpose of this investigation, representative …
Study Of Diagnosability Of Binary Address Decoders, Girishchandra Mahendrakumar Gandhi
Study Of Diagnosability Of Binary Address Decoders, Girishchandra Mahendrakumar Gandhi
Masters Theses
"This paper studies the diagnosability of various types of binary address decoders. An attempt is made to develop a theory of diagnosis for logical faults that might occur in these logic nets. The developed theory is used to analyze these logic nets for various input combinations. Finally, the derivation of optimum diagnostic test sequences is considered"--Abstract, Page i.
Numerical Simulation Of One-Dimensional Three-Phase Fluid Flow In A Stratified Petroleum Reservoir With No Cross-Flow, Ali Mohammed Akbar
Numerical Simulation Of One-Dimensional Three-Phase Fluid Flow In A Stratified Petroleum Reservoir With No Cross-Flow, Ali Mohammed Akbar
Masters Theses
"A numerical model for linear, three-phase fluid flow in a stratified petroleum reservoir has been developed for the purpose of studying water-flooding performance characteristics. Gravity forces, capillary pressure and cross-flow were neglected, but the fluids were considered compressible and evaluations of dissolved gas concentrations have been accounted for. The model was used in evaluating the performance of a water flood project for a hypothetical reservoir which contained the three phases of oil, gas, and water. The results were then compared with those obtained using the Dykstra-Parsons technique. The model produces results which were found to be similar to those obtained …
The Background Concentrations Of Copper, Lead, And Zinc In Streams Of The "New Lead Belt", Missouri, Nicholas Howard Tibbs
The Background Concentrations Of Copper, Lead, And Zinc In Streams Of The "New Lead Belt", Missouri, Nicholas Howard Tibbs
Masters Theses
"This study was initiated to determine the background concentrations of copper, lead, and zinc in the streams of the Viburnum Trend or New Lead Belt of southeast Missouri. Analytical methods were developed for atomic adsorption spectroscopy. These methods initially consisted of coextraction of cooper, lead, and zinc using the APDC/MIBK system, and finally of extraction of copper by APDC/MIBK and direct analysis of lead and zinc using the newly developed "Sampling Boat" technique. The data obtained from these analyses were arranged in histograms and critically analyzed. The background concentrations were established to be 4-6 ppb for all three elements. Methods …
Application Of Reinforcement Principles To The Modification Of Isolate Behavior In A Withdrawn Child, Patricia C. Rinaldi
Application Of Reinforcement Principles To The Modification Of Isolate Behavior In A Withdrawn Child, Patricia C. Rinaldi
Masters Theses
No abstract provided.
Economic Consequences Of The European Economic Community: A Study Of Economic Integration, Edward L. Sattler
Economic Consequences Of The European Economic Community: A Study Of Economic Integration, Edward L. Sattler
Masters Theses
No abstract provided.
An Elementary Student As A Behavioral Engineer, Paul R. Surratt
An Elementary Student As A Behavioral Engineer, Paul R. Surratt
Masters Theses
No abstract provided.
An Investigation Into The Effects Of A College Level Alcohol Education Course On The Implementation Of Alcohol Education Instruction, Ross G. Lane
Masters Theses
No abstract provided.
The Modification And Generalization Of Voice Loudness In An Emotionally Disturbed, Aphonic Girl As A Function Of Reinforcement Contingencies In A Laboratory Setting, Donald Alan Jackson
The Modification And Generalization Of Voice Loudness In An Emotionally Disturbed, Aphonic Girl As A Function Of Reinforcement Contingencies In A Laboratory Setting, Donald Alan Jackson
Masters Theses
No abstract provided.
The Effect Of Discrimination Training On Responses To A New Stimulus, Kathleen Ann Hammer
The Effect Of Discrimination Training On Responses To A New Stimulus, Kathleen Ann Hammer
Masters Theses
No abstract provided.
An Evaluation Of A Rehabilitation Program For Adolescent Psychiatric Patients, Kenneth Richard Gibson
An Evaluation Of A Rehabilitation Program For Adolescent Psychiatric Patients, Kenneth Richard Gibson
Masters Theses
No abstract provided.
Discrimination Decrement In An Auditory Task As A Function Of Time During A Prolonged Vigil, Wain Saeger
Discrimination Decrement In An Auditory Task As A Function Of Time During A Prolonged Vigil, Wain Saeger
Masters Theses
No abstract provided.
Vocational Interests And Curriculum Satisfaction Of Juniors At Western Michigan University: A Pilot Study, Reiko Matsumura
Vocational Interests And Curriculum Satisfaction Of Juniors At Western Michigan University: A Pilot Study, Reiko Matsumura
Masters Theses
No abstract provided.
The Influence Of Ionic Polarizability On The High Temperature Mechanical Properties Of Ionic Crystals, William A. Johnston
The Influence Of Ionic Polarizability On The High Temperature Mechanical Properties Of Ionic Crystals, William A. Johnston
Masters Theses
No abstract provided.
Application Of Delayed Conditioning Procedures To The Behavior Problems Of An Elementary School Child, Michael L. Schwarz
Application Of Delayed Conditioning Procedures To The Behavior Problems Of An Elementary School Child, Michael L. Schwarz
Masters Theses
No abstract provided.
A Survey Of The Need For An Area-Vocational School In Vermilion County, Illinois, Tom L. Davis
A Survey Of The Need For An Area-Vocational School In Vermilion County, Illinois, Tom L. Davis
Masters Theses
No abstract provided by author.
Numerical Integration Of Shell Equations Using The Field Method, Pravin R. Ghael
Numerical Integration Of Shell Equations Using The Field Method, Pravin R. Ghael
Masters Theses
"In this work field equations are introduced to numerically solve the six linear differential equations which determine the displacements and stress resultants for thin elastic shells with axially symmetric loadings. With the applications of the field equations to the analysis of symmetric shells, the two-point boundary-value problem is formulated in terms of twelve first-order ordinary differential equations with boundary conditions at only one point. These equations are solved by using a forth [sic]-order Runge_kutta integration formula. Three problems whose solutions are known have been evaluated to check the accuracy of the field equation method. These are: (1.) Simply-supported, thin circular …