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Masters Theses

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Articles 1591 - 1620 of 2634

Full-Text Articles in Physical Sciences and Mathematics

Reservoir Geology Of The Dundee Limestone, West Branch Field, Michigan, Brendan Ciaran Curran Dec 1990

Reservoir Geology Of The Dundee Limestone, West Branch Field, Michigan, Brendan Ciaran Curran

Masters Theses

West Branch field is a low-relief, NW-SE-trending anticline near the center o f the Michigan basin. Since 1934, the Dundee Limestone (Middle Devonian) has produced over 12 million barrels of oil from this field. From core studies, six depositional facies types were recognized in the Dundee. These are dominated by bioclastic carbonate sand facies deposited in normal-marine shelf settings. Although burial cements have occluded some porosity, carbonate sand facies have retained significant primary interparticle porosity and are the most important reservoir rocks. Micritic facies with restricted faunal assemblages are present at the top of the Dundee. The top 10 to …


Cambrian-Early Ordovician Sequence Stratigraphy And Mount Simon Sandstone Petrology-Michigan Basin, Jeffrey T. Cottingham Dec 1990

Cambrian-Early Ordovician Sequence Stratigraphy And Mount Simon Sandstone Petrology-Michigan Basin, Jeffrey T. Cottingham

Masters Theses

Michigan subsurface correlation is complicated in the Cambrian-Early Ordovician section due to limited availability of rock data. Core and cuttings examination demonstrate that similar stratigraphic sequences exist between the Michigan Basin and surrounding regions. Lithofacies in Wisconsin outcrop are similar to their basinal counterparts, and are correlated on the basis of sediment types, sedimentary structures, and the sequence stratigraphic concept.

The Mount Simon Sandstone in Michigan correlates with that observed in Illinois, Wisconsin, and Iowa. Isopach data throughout the Midwest indicate a single depocenter in Northeastern Illinois. Sedimentary structures and lithology indicate a subtidal environment that may be a progradational …


A Hydrogeological And Hydrogeochemical Investigation Of Groundwater At A Landfill For Sludge From The Kalamazoo Wastewater Treatment Plant, Richard Howard Christensen Dec 1990

A Hydrogeological And Hydrogeochemical Investigation Of Groundwater At A Landfill For Sludge From The Kalamazoo Wastewater Treatment Plant, Richard Howard Christensen

Masters Theses

Major cations and anions were analyzed to determine groundwater chemistry at a site used for the disposal of municipal sludge in the late 1960s and contaminated Portage Creek sedimem dredged in the late 1970s. The disposal site consists of five unlined basins constructed over 50 to 100 feet of stratified sand and gravel outwash underlain by silt and clay. Groundwater in the outwash is unconfined and flows from east to west. A groundwater divide in the center of the site produces local divergent flow to the northwest and southwest. Measurements of chemical constituents indicate that three factors influence groundwater chemistry …


A Simulation Of A Multi-Hop Communications Network Using A Kinematic Topology Generator And Static Sphere-Packing Power Control, Kevin Charles Davis Aug 1990

A Simulation Of A Multi-Hop Communications Network Using A Kinematic Topology Generator And Static Sphere-Packing Power Control, Kevin Charles Davis

Masters Theses

No abstract provided.


Ctran: Transforming Scientific Fortran Programs To Unix Based Computing Environments, Qi Chen Aug 1990

Ctran: Transforming Scientific Fortran Programs To Unix Based Computing Environments, Qi Chen

Masters Theses

FORTRAN is one of the most popular scientific programming languages. The efficiency, rich libraries, and popularity of FORTRAN support its continued use as a programming language for scientific computing in the near future. However, in current multiprocessor UNIX environments, C is often better supported. The desire to use existing FORTRAN subroutines within such a C environment leads to several options. In this thesis, we introduce a "modern" scientific programming language called CTRAN for this purpose.

We begin with a brief review of the history of scientific programming languages. An introduction of CTRAN is given in Chapter HI. In Chapter IV, …


Hydrogeology And Hydrogeochemistry Of The Tekonsha Moraine And Adjacent Interlobate Deposits In Charleston Township, Kalamazoo County, Michigan, Victor V. Melbardis Aug 1990

Hydrogeology And Hydrogeochemistry Of The Tekonsha Moraine And Adjacent Interlobate Deposits In Charleston Township, Kalamazoo County, Michigan, Victor V. Melbardis

Masters Theses

Hydrogeochemical analyses and hydrogeologic interpretations provide the basis for an understanding of local ground-water flow, in a 12 square mile study area, transected by the Tekonsha Moraine and bound by glaciofluvial deposits. Glacial tills separate an upper and lower aquifer system throughout most of the area.

Degraded and tritiated ground water is present in the lower aquifer system. A negative correlation (-0.62) between tritium concentrations and depth is statistically significant (.04). In this local system, hydrochemical trends are characterized by decreases in sulfate percentages and increases in bicarbonate in the direction of ground-water flow. Statistical evaluation of the hydrochemical data …


Mocad: A Graphic Predetermined Time Standards Software For The Ibm P.C., Raad A. Dawood Jun 1990

Mocad: A Graphic Predetermined Time Standards Software For The Ibm P.C., Raad A. Dawood

Masters Theses

MODCAD is a software program designed to give MODAPTS (MODular Arrangement of Predetermined Time Standards) the capability to generate workplace layouts that can be used in conjunction with the time study analysis. Software packages have been developed for MODAPTS such as MODAPTS Plus and Task Master that allow the user to input the predetermined codes of MODAPTS.

AutoCAD (a computer aided design software) is used to combine MODAPTS codes and workplace layout drawings in a single environment by customizing the standard AutoCAD menus and icons to include the MODAPTS codes and routines. AutoLisp (AutoCAD resident language) is used to write …


Sql/Ds, Ingres And Indexes: A Comparative Study Of The Use Of Indexes In Two Database Systems, Karen L. Bourn Jun 1990

Sql/Ds, Ingres And Indexes: A Comparative Study Of The Use Of Indexes In Two Database Systems, Karen L. Bourn

Masters Theses

Many people in data processing desire to know more about the performance of relational databases. Little information about performance exists in the product or public literature. The purpose of this study is to compare one aspect of the performance of relational databases. The aspect explored is the indexing of tables in a relational database. This paper compares the use of indexing in two relational databases, SQL/DS (Ver. 2, Rel. 1) and INGRES (Rel. 5.0/0.6). Queries were created and executed on tables in both databases, first without an index and then with several different indexes.

The findings in this study show …


Development Of A Neural Net Model For The Assignment Problem, Philip Paul Moss Jun 1990

Development Of A Neural Net Model For The Assignment Problem, Philip Paul Moss

Masters Theses

This thesis traces the development of a neural net model which will solve the assignment problem. In addition, the neural net model was compared for optimal performance with four other algorithms: two greedy methods and two well-known solutions, Vogel's Approximation Method (VAM) and the Hungarian method. Assignments were made to randomly generated problems using each method and the results were compared.

The findings from this testing indicated that: (a) the assignments selected by the neural net model were closer to optimal than the two greedy methods and VAM, and (b) the assignments selected by the neural net were not optimal. …


Simulation Of Bromide Transport In A Layered Aquifer Using Two-Dimensional And Three-Dimensional Computer Models, Kathleen Michelle Hewitt Jun 1990

Simulation Of Bromide Transport In A Layered Aquifer Using Two-Dimensional And Three-Dimensional Computer Models, Kathleen Michelle Hewitt

Masters Theses

Simulation of a two-well tracer test at a site near Mobile, Alabama was performed and compared with the experimental breakthrough curve. The models used to simulate the test results were the three-dimensional USGS code HST3D and the two-dimensional USGS code MOC. The results of the three-dimensional model were also compared with the results of the two-dimensional model.

The three-dimensional model HST3D predicted the measured breakthrough curve accurately with the exception of early arrival times of the tracer in the withdrawal well. The two-dimensional model MOC did not accurately predict the bromide concentration in the withdrawal well during the two-well test. …


Kinetics Of The Metal-Exchange Reaction Between Ortho-Phospho-Dl -Serinenickelate(Ii) And Copper(Ii), Jeffrey M. Peterman Apr 1990

Kinetics Of The Metal-Exchange Reaction Between Ortho-Phospho-Dl -Serinenickelate(Ii) And Copper(Ii), Jeffrey M. Peterman

Masters Theses

No abstract provided.


Michigan Apple Pest Identifier And Manager Expert System, James R. Schalk Apr 1990

Michigan Apple Pest Identifier And Manager Expert System, James R. Schalk

Masters Theses

The Michigan Apple Pest Identifier and Management System (MAPI) is a knowledge- based consultation software system. MAPI was designed to provide the user with the ability to identify insects which may harm the apples of Michigan orchards and to project occurrences of maximum adult emergence. A discussion of standard entomological and expert system concepts and the application of these concepts to the processing of information by the Michigan Apple Pest Identifier and Management System is presented. Future possible expansions of the system are suggested.


The Mapping Of A Colored Petri Net Model To An Ops5 Rule-Based Production System, Sally S. Lockwitz Apr 1990

The Mapping Of A Colored Petri Net Model To An Ops5 Rule-Based Production System, Sally S. Lockwitz

Masters Theses

This paper defines a method by which the colored petri net model of a concurrent system may be mapped to an equivalent rule-based production system. The mapping method defined is an intuitive process which results in a production system that clearly represents the petri net model.

In order to demonstrate the effectiveness and correctness of this method, the colored petri net representation of a part of a flexible manufacturing system of the Renault Car Company is mapped to an equivalent Sierra OPS5 rule-based production system.

An overview of petri nets and rule-based production systems is presented, along with a brief …


Effects Of Lake Management On Chemical, Physical, And Phycological Characteristics Of A Hypereutrophic Reservoir, Kaye J. Surratt Jan 1990

Effects Of Lake Management On Chemical, Physical, And Phycological Characteristics Of A Hypereutrophic Reservoir, Kaye J. Surratt

Masters Theses

Lake Charleston is a 1.1 billion gallon capacity side channel reservoir which was constructed in 1982 as a public drinking water supply for the City of Charleston in Coles County, Illinois. Past studies of the lake indicated an increase in eutrophication and the capacity to support large algal populations. Recent lake management practices include copper sulfate applications as an algicide and aeration to reduce flavor and odor.

In order to assess present lake status and to evaluate the effectiveness of lake management practices, two lake sites were sampled on a weekly basis from May to October, 1989. Chemical, physical, and …


Indirect Photometric Chromatography Of Inorganic And Organic Anions Using Benzoate As An Eluent, Shahab A. Shamsi Jan 1990

Indirect Photometric Chromatography Of Inorganic And Organic Anions Using Benzoate As An Eluent, Shahab A. Shamsi

Masters Theses

For many years the determination of common inorganic and organic anions was hindered by the lack of adequately sensitive analytical techniques. The determination of these anions was laborious and time consuming (e.g. titration, precipitaion, gravimetric analysis etc.). Because of the development of high-performance liquid chromatography, the anion exchange separation of simple inorganic and organic anions is now possible. Now, there are a broad and ever-increasing array of chromatographic methods supplanting these older chemical methods. However, detection is still a problem, but indirect detection provides a practical route for the detection of non-chromophoric inorganic and organic anions.

This dissertation describes the …


Molecular Mobility In A Model Polymer Composite, Joan Ethel Gambogi Jan 1990

Molecular Mobility In A Model Polymer Composite, Joan Ethel Gambogi

Masters Theses

"The adsorption of aminoalkysilane coupling agents onto silica surfaces and the interaction of these functional silanes with a bismaleimide and an epoxy resin has been studied using solid-state NMR techniques. 13C CP-MAS was used to confirm the bonding between the silence and bismaleimide (BMI) resin and elucidate the nature of the crosslinking reaction of BMI. Deuterated coupling agents were synthesized and adsorbed on silica surfaces. The motional dynamics were probed using deuterium solid-echo NMR. It was determined that the motion of the alky portion of the coupling agents was consistent with gauche migrations (gtt ↔ tig) and pair gauche …


The Relation Of Radium-226 And 228 To The Groundwater Geochemistry Of Carbon, Sulfur, And Chlorine Near Michigan's Saginaw Bay, Ray Milejczak Dec 1989

The Relation Of Radium-226 And 228 To The Groundwater Geochemistry Of Carbon, Sulfur, And Chlorine Near Michigan's Saginaw Bay, Ray Milejczak

Masters Theses

The Michigan Department of Public Health (MDPH) sampled 149 residential wells producing from glacial drift and Saginaw Formation aquifers in Bay, Midland, Saginaw, and Tuscola counties in 1987. These wells were analyzed for 226Ra, 228Ra and general chemistry. Of the 149 samples, 50 exceeded the USEPA MCL of 5 pCi/L or greater for combined 226Ra + 228Ra activities. A geochemical model (WATEQF, Plummer et al., 1976) was used to determine activity coefficients, activities, ionic strength, and mineral saturation. The radium isotopes were statistically analyzed with respect to the chemical data from MDPH and the geochemical model …


Calculation Of Electron Scattering For 4He In A Continuum Shell Model, Ming Yu Dec 1989

Calculation Of Electron Scattering For 4He In A Continuum Shell Model, Ming Yu

Masters Theses

Calculations for the electroexcitation of the 4He, O+ state have been performed within the context of recoil corrected continuum shell model. Approximations previously employed for inelastic scattering with the recoil corrected continuum shell model are eliminated in the work. The O+ state exhausts only 10% of the energy weighted sum rule and previous shell model calculations for the excitation of this state produce about ten times too much strength. This difficulty is alleviated by the use translationally invariant wave functions and the application of continuum boundary conditions for this particle unbound state. The structure of the O+ state is …


Relativistic And Non-Relativistic Nuclear Charge Form Factors, Tao Wang Dec 1989

Relativistic And Non-Relativistic Nuclear Charge Form Factors, Tao Wang

Masters Theses

This thesis presents an examination that the two nuclear charge form factors, relativistic and non-relativistic, are equivalent approximately in an appreciable range. The relativistic one is contributed by both vector charge density and tensor charge density. And the non-relativistic charge form factor is contributed by the nuclear densities from experimental electron scattering cross section, these densities are fundamental to much of nuclear structure physics.

The Dirac equation is used to calculate the vector charge density and tensor density, because the charge density from the analysis of the experimental data may be compared with proton charge densities obtained from various models …


An Efficient Implementation Of Logical Design For Relational Databases, Shakeel Ishaque Aug 1989

An Efficient Implementation Of Logical Design For Relational Databases, Shakeel Ishaque

Masters Theses

This work presents efficient methodology for the design of relational databases and an implementation of a design tool. A set of algorithms and supporting theory are discussed. Improvements are made on existing decomposition approaches.

The Dependency Preserving Normal Fom (DPNF), which is stronger than 3NF, is presented. It guarantees a decomposition with lossless join property and at the same time preserves all of the functional dependencies.

An algorithm to obtain DPNF decomposition is presented. The algorithm computes DPNF decomposition in polynomial time. It converts supplied functional dependencies to annular cover and uses reduced annular cover to compute closures and decomposition. …


A Generalized Data Distribution Model For Distributed Relational Databases, Patrick D. Yurk Aug 1989

A Generalized Data Distribution Model For Distributed Relational Databases, Patrick D. Yurk

Masters Theses

This thesis presents a generalized model for the allocation of data in a distributed relational database. The model is applicable to a network of computers where there are different retrieval and update costs at the various sites, and different communication costs between sites.

The method used in this model is based upon clustering of similar computers within the network. Clusters are derived from grouping together sites with similar update, retrieval and communication costs. Data is then allocated to a cluster based on actual communication and processing costs.

The data distribution method between clusters uses a technique where the benefit of …


Wetland Study Of Southeastern Portage Township, Kalamazoo County, Michigan, Kevin M. Walsh Aug 1989

Wetland Study Of Southeastern Portage Township, Kalamazoo County, Michigan, Kevin M. Walsh

Masters Theses

Under the Clean Water Act, Congress passed legislation to maintain and restore the chemical, physical, and biological integrity of the water of the United States. The objective of this study is to determine if the wooded area located in Upjohn Company's Property in southeastern Portage Township, Portage, Michigan falls under the classification of a wetland.

This objective has been pursued through an examination of the hydrology of the area, the soil characteristics of the area, and the vegetation types and characteristics of the area. These parameters have been utilized following the guidelines outlined in the "Corps of Engineers Wetland Delineation …


Debris Slides And Flows On Anakeesta Ridge Within The Great Smoky Mountains National Park, Tennessee, U.S.A, Patrick T. Ryan Aug 1989

Debris Slides And Flows On Anakeesta Ridge Within The Great Smoky Mountains National Park, Tennessee, U.S.A, Patrick T. Ryan

Masters Theses

Debris slides and flows along Anakeesta Ridge in the GSMNP have been investigated utilizing dendrochronology, aerial photography, erosion stations, precipitation data and rockslope engineering techniques.

Based on the slides for which the specific dates of occurrence are known, the corresponding precipitation that was at least in part responsible for triggering the mass-wasting events varies from 1 .5 inches of rain per day to 4 inches of rain for a 6 hour period. Unfortunately, intensity records are not available to provide at what rate the precipitation was delivered. Based on TV A precipitation records it was determined that 1273 storms (1 …


The Implementation Of A Generalized Database Directory, Claudia Helms-Vaccaro Jun 1989

The Implementation Of A Generalized Database Directory, Claudia Helms-Vaccaro

Masters Theses

This paper presents the use of an index made up of a single B+ tree connected at its leaf nodes to a lower set of B+ trees--a multitree. It may be utilized to index dense or non-dense attributes of a file. An extra benefit of this structure is the ability to store a secondary attribute value for use when searching the index, often decreasing accesses and time required to complete the search.

Improved efficiency over current indices, such as conventional B+ trees or inverted files, is evaluated.


A Laboratory Characterization Of Pulp And Paper Mill Solid Wastes For Potential Use As Hydraulic Barrier Material In Landfill Covers, Carleton Van Maltby Jun 1989

A Laboratory Characterization Of Pulp And Paper Mill Solid Wastes For Potential Use As Hydraulic Barrier Material In Landfill Covers, Carleton Van Maltby

Masters Theses

Fifteen sludges from wastewater treatment systems of pulp and paper mills that encompass major production categories, and eight fly ashes from mill boilers incinerating wood waste, coal, or their combination were characterized for their potential suitability as hydraulic barrier material. Hydraulic conductivity was observed to range over four orders of magnitude for the materials tested.


Resistivity And Seismic Refraction Surveys Applied To A Groundwater Investigation In Richland Township, Kalamazoo County, Michigan, Homa Moaddel Apr 1989

Resistivity And Seismic Refraction Surveys Applied To A Groundwater Investigation In Richland Township, Kalamazoo County, Michigan, Homa Moaddel

Masters Theses

Many geophysical methods are increasingly being applied in investigations of contaminated sites. Among the most popular ones are resistivity and seismic refraction techniques.

In this study seismic refraction utilizing a twelve channel digital seismograph and hammer impact source provided records that have given important information about the subsurface layers. Along the same traverses, the Schlumberger resistivity method was applied at selected points. An AC digital resistivity system with a separate uncoupled transmitter (50 watts) and receiver was applied to obtain these measurements.

Geoelectrical cross-sections provided information about the variation in thickness of important layers within the glacial drift aquifer system. …


An Analysis Of High Dimensional Data, Ravishankar Swamy Apr 1989

An Analysis Of High Dimensional Data, Ravishankar Swamy

Masters Theses

Projection of a high dimensional data set into a two dimensional subspace can lead to very interesting projections. Note that P dimensional data can be projected onto P orthogonal two dimensional planes, which completely determines the original data. Two dimensional orthogonal projections can be analyzed for patterns in several ways.

In this work we will be trying to explore an unknown P dimensional data set by comparing its test projections with a set of standard patterns. A set of P dimensional data is transformed into K.K grid counts and the whole process of recognition is done using these K.K grid …


A Spectroscopic Study Of Charge Distribution In Transition Metal Bridging Hydride Complexes, Shixiong Chen Jan 1989

A Spectroscopic Study Of Charge Distribution In Transition Metal Bridging Hydride Complexes, Shixiong Chen

Masters Theses

A series of transition metal bridging hydrides of general formula C[μ-HM2(CO)10] (C = tetraethylammonium, Et4N+; tetraphenylphosphonium, Ph4P+; of bis(triphenylphosphine)iminium, PPN+; M = Cr or W) were synthesized from M(CO)6 and NaBH4 bt known methods. As a means of obtaining information about the charge distribution in these complexes, they were allowed to interact in solution and the solid state with triphenylphosphine oxide (TPPO) on the premise that this electron donor could identify sites of relative electron deficiency. Evidence for interaction was sought via solution and …


A Novel Synthesis Of Cyclic And Acyclic 3-Alkenoic Acids Via Ionization/Elimination Of Β-Lactones, Stephen Lucas Maluleka Jan 1989

A Novel Synthesis Of Cyclic And Acyclic 3-Alkenoic Acids Via Ionization/Elimination Of Β-Lactones, Stephen Lucas Maluleka

Masters Theses

Exposure of spiro β-lactones and 3-substituted 4,4-dialkyl oxetan-2-ones to magnesium bromide in diethyl ether solvent resulted in the smooth generation of β,γ-unsaturated acid derivatives in high yield and isomeric purity. It is believed that this reaction occurs via the formation of a stable tertiary carbocation at the β-carbon resulting from cleavage of the carbon-oxygen sigma bond due to the complexation of magnesium cation with the ring oxygen atom. Rapid loss of an adjacent proton then furnishes the unsaturated acids. The β-lactone precursors were prepared by the dehydration of β-hydroxy acid derivatives (obtained from the condensation of ketones with acetic acid …


Derivatization Of Coal By Alkylation And Lithium Iodide Treatment, Cynthia L. Ludwig Jan 1989

Derivatization Of Coal By Alkylation And Lithium Iodide Treatment, Cynthia L. Ludwig

Masters Theses

The hypothesis that hydrogen-bonded ethers in coal could be cleaved by reaction with lithium iodide in pyridine to form new phenol groups was investigated for coals #2, 3, and 5 plus their alkylated derivatives from the Argonne Premium Coal Sample Program. Changes caused by alkylation and reaction with LiI were monitored by solvent extraction yeilds, solvent swelling, FT-IR and Size Exclusion Chromatography (SEC).

Solubilities of alkylated coals are rank and oxygen functionality dependent. Evidence supports the hypothesis that the solubilization mechanism is dependent on the extent of hydrogen-bonding in the coal. Elimination of hydrogen-bonds through alkylation increases toluene solubility and …