Digital Commons Network^™

The Design And Modeling Of An Active Solar Heating System For An Existing Residence, John R. Mlinar

Theses and Dissertations

No abstract provided.

A Study On Improving Strategic Missile Squadron Management Incorporating The New Assistant Operating Officer, Bradley B. Dunning

Theses and Dissertations

No abstract provided.

A Sense Of Loss : A Collection Of Short Stories, Bjorn H. Benson

Theses and Dissertations

No abstract provided.

The Later Career Of Tom Watson, 1906-1922 : A Study In The Dilemmas Of A Democratic Society, Michael C. Stermock

Theses and Dissertations

No abstract provided.

The Ashern Formation (Middle Devonian) In The Williston Basin, North Dakota, Frederick K. Lobdell

Theses and Dissertations

The Ashern Formation (Middle Devonian) is the basal unit of the Kaskaskia Sequence in North Dakota. It unconformably overlies the Interlake Formation (Silurian) and underlies, probably paraconformably, the Winnipegosis Formation (Middle Devonian). The Ashern is present in the northwestern one-half of the state, and attains a maximum thickness of 180 feet (55 meters) The Ashern Formation may be subdivided into a lower red member and an upper gray member. The latter directly overlies the Interlake Formation where the red member is absent. Both members are argillaceous, microcrystalline dolostones containing minor quartz silt. Anhydrite, present in both members, is much more …

Paleohydraulics Of Pleistocene Drainage Development Of The Souris, Des Lacs, And Moose Mountain Spillways, Saskatchewan And North Dakota, Mark L. Lord

Theses and Dissertations

Recent recognition of the rapid draining of numerous glacial lakes, including some in the Northern Plains, has revealed 'a need for further research concerning this process. Geomorphic interpretation of the Souris, Des Lacs, and Moose Mountain Valleys, and the gravel deposits in them, has resulted in the recognition of five phases in the development of the drainageways. Textural analyses and paleohydraulic methods were applied to the sediments associated with each phase to distinguish and characterize the discharges. Four of the five phases of development involved short-lived, high velocity (>4 m/s) discharges resulting from the rapid draining of glacial lakes; …

The Effects Of Seismic Blasting On Shallow Water Wells And Aquifers In Western North Dakota, Frank W. Beaver Jr. P. E.

Theses and Dissertations

Seismographic petroleum exploration throughout North Dakota has generated concern over the effects of blasting on groundwater supplies and wells. A preliminary investigation revealed complaints alleging declining productivity and decreased water quality in regions where coal aquifers are extensively used. Unplugged shotholes were frequently cited as a source of problems.

Experimental results indicate that changes due to blasting occur within long term physical the aquifers rather than in specific water wells. Pumping tests conducted in a sand and coal aquifer system showed no apparent physical effects when shots were detonated one quarter mile away from the pumping wells. Shots 500 feet …

Lignite Liquefaction Using Carbon Monoxide, Hydrogen And Water In A Hot Charged, Two-Staged, Batch Autoclave System, John James Gagliardi

Theses and Dissertations

The effects of second stage temperature and the effects of the type of solvent used on the liquefaction of North Dakota lignite in a staged liquefaction process were investigated. The UND hot-charge, time-sample, batch autoclave facility was used for the experimentation. Approximately one hundred and fifty grams of moisture- and ash-free (MAF) lignite, three hundred grams of solvent (either anthracene oil or a hydrogenated anthracene oil was used as the solvent), and seventy five grams of water were reacted in the hot charged experiments. Carbon monoxide was used in the first stage and hydrogen and one hundred grams of solvent …

Heat Transfer To Horizontal Tubes In A Pilot-Scale Fluidized-Bed Combustor Burning Low-Rank Coals : A Comparison Of Heat-Transfer Coefficient Equations, Eric S. Sorenson

Theses and Dissertations

No abstract provided.

Two-Dimensional Computer Modeling Of Joints And Fractures In Continua, Royd R. Nelson

Theses and Dissertations

This thesis presents a numerical formulation which incorporates the effects of joints, cracks, and fractures into a mathematical mode used to in an existing finite element code. Two separate crack definitions were incorporated, one involving a discrete crack model, and the other a continuum approach defining a new material with regularly spaced joints. Several examples are also presented demonstrating the use of this capability.

Stochastic Estimation Applied To The Land Speed Of Sound Record Attempt By A Rocket Car, David A. Reinholz

Theses and Dissertations

Optimal linear smoothing theory is applied to the data from the Speed of Sound record attempt of a three-wheeled rocket car on 17 December 1979. A forward-backward estimation method is used which employs a seven state forward-running extended Kalman filter and a Meditch-form backward recursive 'fixed-interval' smoothing algorithm. Data for this analysis is supplied by a longitudinal accelerometer mounted on the vehicle and tracking radar measurements of range, azimuth, and elevation. States of interest include two components of vehicle position and velocity, accelerometer time-correlated error, and radar range and azimuth bias errors. Two iterations of the forward-backward smoothing algorithm provide …

Kinetic Analysis Of The Ion Exchange Of Sodium From Subbituminous Coal, Jason Allen Chesley

Theses and Dissertations

The removal of Na from subbituminous coal by ion ex change was investigated on a batch basis with H-ion donated by dilute aqueous The exchange of K, Mg, Ca, and A1 from the coal was also observed. The four parameters stud ied were initial H2SC>4 concentration, coal particle size, residence time, and liquid to solid mass ratio.

Results from this investigation indicate that at equi librium 95 % of the initial Na content of the subbituminous coal can be removed by ion exchange with dilute aqueous H2S04 . It was also determined that Na removal is directly proportional to …

Annular Flow In A Low - Pressure Steam - Water System, Arnfinn Borch Lund

Theses and Dissertations

Two-phase annular flow is an important aspect of two- phase flow. Three different models, Ghosal, Wallis, and Levy models, were used to calculate the pressure drop in an nular two-phase flow. The calculated pressure drop was com pared with a set of experimental data. The pressure range of the data was 350 to 850 kPa. Steam quality varied from 4.0 to 52.7 percent, while the total mass flux varied from 245.4 to 2303.7 kg/m^,s.

The predictions of the Wallis model were found to agree best with the data. This model appears to be well developed with respect to the hydrodynamic …

Development Of A Computer-Aided Graphics Capability To Display Field Test Data, L. Allen Adams

Theses and Dissertations

This thesis develops an interactive computer-aided graphics package for the display of experimental and field test data. EXPERT was developed to be used in conjunction with MOVIE.BYU and DISSPLA, utilizing a bivariate interpolation scheme to create a full field of data using the "sparse" field data as pivotal points. The usefulness and practicality of the program is demonstrated by graphically displaying the data from the Air Force Weapons Laboratory's CHEAT test.

Gasification Of Lignite Using Solar Energy, Rodney E. Sears

Theses and Dissertations

No abstract provided.

Political Aspects Of Natural Resource Agency Administration: Citizen Participation Applied, John Staley

Theses and Dissertations

No abstract provided.

The Construct Of Personality And Hemispheric Usage, Steven L. Dawson

Theses and Dissertations

Studies on the differential contributions of the cerebral hemispheres to human experience and behavior have demonstrated that the hemispheres are lateralized for cognitive strategies and, possibly, for emotional valance. Recently researchers have demonstrated that the hemispheres may also be lateralized for certain personality disorders and personality traits. Using lateral eye movements as a measure of hemispheric activation, Dawson, Tucker, and Swenson (in preparation) have shown that certain self-description questionnaires may serve to discriminate subjects who characteristically utilize one hemisphere over the other, regardless of the relative adaptiveness of the cognitive strengths of that hemisphere for the task at hand.

This …

Comparison Of Walleye: Stizostedion Vitreum Vitreum (Mitchell), Ecology And Biology From Three Discrete Areas Of Lake Sakakawea, North Dakota, Randy J. Hiltner

Theses and Dissertations

Various aspects of the ecology and biology of the walleye were examined from three discrete areas of Lake Sakakawea during the summer of 1982. Spatial distribution, predator-prey relationships and species association data were procured by simultaneously placing experimental and 0.5 in mesh gill nets at three depth ranges: 0-10 ft, 11-20 ft and 21-40 ft. Temporal distribution data were collected by lifting and resetting the gill nets approximately every six hours. Four time periods were used: 0600-1200 h, 1200-1800 h, 1800-2400 h and 2400-0600 h. Walleye age, growth and food habit data were also collected from the fish caught.

The …

Cause And Effects Of Governmental Deregulation Of The Airline Industry, D.K. Miller

Theses and Dissertations

No abstract provided.

The University Of North Dakota: The Relationship Between Personal Characteristics And Attitudes On Taxes, Terry L. Nyhous

Theses and Dissertations

No abstract provided.

Variant Editions Of The Appeal To Reason 1905-1906, Sharen E. Neet

Theses and Dissertations

No abstract provided.

The Relationship Between Personal Characteristics And Attitudes On Taxes, Terry L. Nyhouse

Theses and Dissertations

No abstract provided.

Ultrasonic Continuous Wave Spirometer, Todd A. Ell

Theses and Dissertations

There exists a problem of accurately performing spirographic measurements under physical stress situations. Existing systems, which use mechanical structures in the measurement process, have response times that are too slow, or are too bulky to be considered portable.

The proposed system solves these problems and has a number of attractive characteristics. The system uses relatively inexpensive solid state electronic components which implies a minimal of mechanical parts; portability; and a linear, fast response time.

The system presented in this thesis determines the velocity and temperature fluctuations of the human breath by measuring the difference and sum of the transit times …

A Theoretical Model For Captive Columns In Bending, Michael J. Gilberg

Theses and Dissertations

A theoretical model for the determination of the beam stiffness of a captive column loaded as a simple-supported beam with a concentrated midspan load is described. A captive column is a high strength, light-weight composite structural member. Due to the composite nature of a captive column, the deflection due to shear forces, which is neglected in typical beam applications, must be included in the determination of the lateral deflection. The total deflection is obtained by setting the elastic strain energy stored in the captive column equal to the work that is applied to the column. The effects of changes in …

Development Of A Computer-Aided Analysis Package For Linear Elastic Fracture Mechanics, William E. Warkentin

Theses and Dissertations

This thesis develops an interactive computer-aided analysis package for solving linear elastic fracture mechanics problems. CHILES 2 (an existing finite element fracture mechanics program) was modified to be interactive. The modified program is named CHILES.BYU and is used in conjunction with QMESH.BYU and MOVIE.BYU to form the total software package. An analysis of glass ceramics and glass ceramic/metal interfaces was performed demonstrating the capabilities of the package. This study demonstrates the usefulness of an interactive package of computer programs to allow an engineer to rapidly investigate different crack configurations.

Scrubs.Byu A Two Dimensional Finite Element Package For Continuum Analysis Using Quadratic Isoparametric Elements, Michael Glenn Long

Theses and Dissertations

This thesis develops a two dimensional, axisymmetric finite element package for solving continuum problems including rubbleization subsidence and nonlinear fracture mechanics. This package includes both a user friendly preprocessor, PRESCRUBS.BYU, and a versatile analysis code SCRUBS.BYU. PRESCRUBS.BYU systematically creates the data file necessary to run SCRUBS.BYU. SCRUBS.BYU provides many options of nonlinear static analysis using either linear or quadratic isoparametric finite elements. Sample problems are presented that demonstrate the capabilities of this package.

A Study Of Sensitive Lands In Provo, Doris R. Monson

Theses and Dissertations

Sensitive lands are being developed in great quantity. Because of problems caused by the development of sensitive lands, Provo City has developed land use ordinances. This thesis examines the development of Provo's ordinances along with the development of its sensitive lands. It determines ways that the city can strengthen their land use ordinances and avoid some of the problems found in sensitive land development.

The James H. Dooley Mansion : A Richmond Example Of The Richardsonian Romanesque Style, Vera Twiggs Underwood

Theses and Dissertations

The Dooley estate, Maymont, is located at 1700 Hampton Street in Richmond, Virginia. Once a dairy farm, the approximately 105-acre home site is adjacent to the popular Byrd Park and overlooks the James River. In this paper I have researched the architectural construction of the Dooley mansion and its significance to the Richmond area with regards to the Dooleys, their art collections, and their interest in European trends.

Early Mormon Woodworking At Its Best: A Study Of The Craftsmanship In The First Temples Of Utah, Thomas Weston Welch

Theses and Dissertations

The original intent of this paper was to examine early mormon pioneer woodworking. Upon investigation, however, it was discovered that there is one type of early utah mormon woodworking about which very little has been written and which includes some of the best efforts of these early craftsmen. This woodworking is the interior work done in the construction of the early mormon temples. This paper will attempt to document the state of early pioneer craftsmanship and show examples of this work.

A Comparison Of Processor Technologies, Eddie R. Wachter

Theses and Dissertations

The purpose of this paper is to present a discussion of the technology implementation and design of four very high performance mainframe computer systems. The systems evaluated are:

Amdahl 580 Series

CDC 170 Series 800

IBM 308x Series

Univac 1100/90 Series

Included in this evaluation is a survey of the technology used, its characteristics, packaging and performance. Each system component is evaluated on the basis of design philosophy, technology, and the total system design with regards to reliability, availability, and performance.