Digital Commons Network^™

The Age And Fertility Of Lignite Strip Mine Spoils From The Darco Mine, Harrison County, Texas, Reagan Cook

Electronic Theses and Dissertations

Field observation of lignite strip mine spoils from the Darco mine near Marshall, Texas, revealed that gray spoil materials of various ages were devoid of vegetation. Within the same sites, spoil materials which were non-gray supported several conditions of revegetation. Analysis of spoil materials from this mine was undertaken to determine if spoils were differentiated on a chemical basis. Gray materials appear to have greater mineral sources of zinc, iron, and sulfate than non-gray spoils, and greater concentrations of zinc, calcium, magnesium, and potassium at all sites. Further, older spoils (17 to 31 years of age) have mean pH values …

Use Of Lignite Fly Ash As A Soil Amendment, Thomas Victor Brown

Electronic Theses and Dissertations

One-year-old loblolly pine (Pinus taeda L.) seedlings were grown in a greenhouse in potted mixtures of two Texas lignite fly ashes and a Troup sand, Sacul sandy loam, and a sandy clay loam strip-mine spoil. Mixtures contained 0, 25, 50, 75 and 100 percent fly ash. After six months, soil fly ash mixtures were analyzed for N, P, Ca, Mg, K, Na, Mn, Zn, pH, cation-exchange capacity, percent base saturation, and texture. Needle and root tissue analyses were performed on both live and dead seedlings. Survival and height growth were both adversely affected by fly ash amendments. Nearly all seedlings …

A New Procedure For Calculating Dipolar Sources Of Eeg Discharges., Joseph Harvey Rothweiler 1952-

Electronic Theses and Dissertations

A new procedure has been developed for determining the location of the source of certain EEG discharges given the measured surface potentials. The source is modeled as a single current dipole with arbitrary position and orientation, while the head is modeled either as a single homogeneous sphere or as three concentric spheres. This procedure is developed by extending the matched filter concept of communications theory to functions defined on a spherical surface. In addition, simplifications are developed which reduce the amount of computation required. Simulations have been performed using computer generated data to show the validity of the locating procedure …

A Description Of The Role Of The Public School Science Supervisor: 1895 To 1976, Judy Harmon

Electronic Theses and Dissertations

The Problem. The problem was to investigate the role of the public school science supervisor in the United States as perceived by recognized authorities, through the identification and description of beginnings, developments, trends, and projections found in scientific and educational literature. (Abstract shortened.)

A Comparison Of Attitudes Toward Community Colleges With Attitudes Toward Four-Year Colleges, Robert L. Gillespie

Electronic Theses and Dissertations

Purpose. The purpose of this research was to determine if the attitudes of high school seniors toward community colleges and four-year colleges were significantly different according to socio-economic measures, and to see how they compared with their teachers'attitudes. (Abstract shortened.)

Cost Comparison And Productivity Study Of Basic Apartment Maintenance Systems: Literature Survey And Field Study, Osmo Ville Kettunen

Electronic Theses and Dissertations

No abstract provided.

A Church Growth Study Of Churches In North East India, Clinton Brazle

Electronic Theses and Dissertations

The Church of Christ in North East Indian began as an indigenous movement among the Khasi tribe as an effort to restore New Testament Christianity. The movement is under fifty years old. It grew normally and rapidly until division occured among the leaders in 1963, when the growth rate dropped drastically. The movement has spread now to the Garos, Mizos, Mikirs, Nagas, Assamese, Kukis, and especially the Paites and Manipuree. There is a growing ethusiam among a few Christians which may eventually spread through many of the tribes of North East India and beyond.

Examination of the above-mentioned tribes of …

Employment Status Of Female Administrators And Attitudes Toward Employment Of Female Administrators In The Community College System Of North Carolina, Linda C. Gardner

Electronic Theses and Dissertations

Purpose. The purpose of the study was to determine the current employment status of female administrators and, further, to study attitudes held by female educators, male educators, presidents, and board chairmen of the North Carolina Community College System toward employment of female administrators in the Community College System of North Carolina. (Abstract shortened.)

The Status Of Science Supervision In Florida School Districts, Roy F. Ellis

Electronic Theses and Dissertations

No abstract provided.

The Effects Of Prescribed Burning On Nutrient Content Of Selected Understory Species In An East Texas Loblolly-Shortleaf Pine Stand, Kelly Bell

Electronic Theses and Dissertations

The objectives of this study were to determine whether prescribed burning affected nutrient levels in leaves and twigs of six species and whether there were differences in response between leaves and twigs. Backfire and headfire treatments were used to determine differences between burning techniques. Samples were collected in October, 1974. The burn was in March, 1975 and post-burn sampling was in June, 1975, September, 1975, and June, 1976. Leaf and twig tissue were analyzed for contents of protein, calcium, potassium, and phosphorus and then subjected to statistical analysis. No difference was found between burning techniques. Protein and phosphorus increased and …

The Puritan Tradition In The Novels Of Robert Herrick, Allen D. Towery

Electronic Theses and Dissertations

No Abstract

Project Remand : Estimating Probability Of Failure To Appear, Glen Arthur Just

Electronic Theses and Dissertations

The study investigated the following problem: What is the best estimator of failure to appear (FTA) for felons in Ramset County, Minnesota, who are released into the community during their pretrial period? An estimator of FTA and nonFTA probabilities was derived with the aid of stepwise discriminant analysis. The method demonstrates the expost facto ability to correctly place 98 percent of the nonFTA’s and 30 percent of the FTA’s in the 1975 sample. The overall total group placement, due to the large percentage of nonFTA’s in the sample, was approximately 90 percent. Even though it is recognized that multiple regression …

A Study Of Selected Factors Associated With Formal Normative Inmate Behavior At The Maryland State Correctional Institution, Virgil J. Brown

Electronic Theses and Dissertations

This research was designed to answer the following question: “What factors are associated with inmate deviations from formal rules and regulations within a correctional institution?” The study had the following objectives: (1) the development of a theoretical model which would be capable of analyzing formal normative behavioral patterns of incarcerated individuals; (2) the development of instruments for measuring formal normative behavior and a set of related variables; (3) to establish the degree of association between selected variables and formal normative behavior of inmates; and (4) the development of an index for prediction of inmates propensity to conform to or deviate …

A Microprocessor Controlled Clock System, Joseph P. Clarke

Electronic Theses and Dissertations

While the areas of time keeping and computers have been somewhat independent, there have been exceptions. The commercial time recording clocks have for many years been used of ring bells in schools and factories. An example of this type of system is the simplex control clock designed by International Business Machines in 1949. This type of clock relies on electromechanical logic. With the introduction of low cost digital logic and microprocessors, the designer has been given the opportunity to develop real time control systems and sophisticated digital clocks. The first attempt at this project definition was to develop a digital …

Comparative Analysis Of Participation And Finances In Programs Of The Brookings Parks And Recreation Department, Michael A. Blazey

Electronic Theses and Dissertations

The purpose of this study was to conduct and comparative analysis of the nature and frequency of participation in recreation programs of the Brookings Parks and Recreation Department and the sources of revenue used in support of these activities. The study has been deemed significant as the present researcher was unable to fund and evidence that studies on the nature and frequency of participation as related to cost have been attempted. It was hoped that this study might provide a framework for data collection for future studies of a similar nature. The study was designed and conducted to provide Parks …

Probabilities Of Solar Weather, Hand-Hung Chen

Electronic Theses and Dissertations

During the last several years we have witnessed increasing costs and shortages of energy from conventional sources. This “energy crisis” promises to be with us for some time to come unless we change our way of life and in addition develop new sources of energy. The energy crisis is spurring the development of several new energy have been considered including heating and cooling of homes, domestic hot water heating, drying of agricultural products and many more. The economic feasibility of a solar system depends upon how well the system perform in the particular location in which it is to be …

Sodium Bentonite, Sodium Bicarbonate And Limestone Supplementation In High-Concentrate Diets For Ruminants, Barry Howard Dunn

Electronic Theses and Dissertations

In the past several years, there has been increased interest in what has been referred to by some as the two-phase feeding of ruminants. This includes backgrounding, when animals are fed diets high in roughage during a growing period, followed by high-grain feeding during a relatively short finishing period. An interim period of grain adaptation, usually 2 to 3 weeks in length, is necessary in this feeding system to avoid the deleterious effects of the rumen acidosis associated with abrupt changes from predominantly roughage diets to high-grain diets. Feedlot performance during this adaptation phase is generally lower than desired. The …

Organochlorine Insecticide, Polychlorinated Biphenyl And Metal Residues In Birds Of South Dakota, Brian Gueck

Electronic Theses and Dissertations

Chlorinated bydrocarbon insecticides, polychlorinated biphenyls (PCB’s) and metal residue levels were measured in tissues of common crows, American coots, starlings and Franklin’s gulls of South Dakota. Methods of analysis for insecticides and PCB’s included column, thin-layer and gas—liquid chromatography and atomic absorption spectrophotometry for metals. DDE was the most prevalent residue, being detected in 93% of all samples ad averaging 66% of the total residues in the carcass.

Inheritance Of Regrowth And Other Characters In Smooth Bromegrass, Geprge Lance Holborn

Electronic Theses and Dissertations

Land utilization is becoming increasingly important; farmers and ranchers are continually striving to produce more from production sites and to realize some production from their presently non-productive areas. Progress in this direction must be forthcoming in all areas of agriculture. In the case of cool-season grass species, growth takes place in the spring and fall of the year. With the exceptions of the cool-season grass species, orchardgrass, Dactylis glomerata L., little if any mid-summer growth is produced. Orchardgrass, however, is not winter-hardy or very productive under dryland conditions in South Dakota. Currently, there are no cool-season grass varieties recommended to …

The Photochemical Behavior Of Adsorbed Stilbene, Jeffrey L. Jensen

Electronic Theses and Dissertations

Only limited study has been conducted in the area of photoirradiation of trans-stilbene abdorbed on silica gel or alumina. These previous studies were characterized by the immediate removal of the resultant irradiation products from the solid matrix. Hecht, however has noted that if an irradiated system was left on alumina and monitored by reflectance spectroscopy the irradiation products did not produce a stable system, but a return of trans-stilbene was noted. The purpose of this work has been to investigate this behavior.

The Effect Of Oral Ferric Nitrilotriacetic Acid (Fe-Nta) Alone And In Combination With Ascorbic Acid And Choline On Serum Iron Concentration In Swine, Thomas Michael Juntti

Electronic Theses and Dissertations

Iron deficiency anemia has been a problem with pigs raised in confinement for over five decades. During that period effective treatments have been developed, but these still involve a considerable outlay of labor on the part of the swine producer. The need for an effective and easily administrable hematinic still exists. The possible advantage of the treatment tested here are: 1. The treatment may be administered to either sow or baby pigs in drinking water or feed. Pigs born to sows whose diet was supplemented may have increased iron stores. 3. The iron concentration of milk in sows whose diet …

Estimating The Elasticity Of Demand For Rail Transportation Of South Dakota Wheat, Karen Ann Olson

Electronic Theses and Dissertations

The overall objective of this study is to estimate the price elasticities of demand for rail transportation of wheat produced in South Dakota in 1974. The specific objective of this study is to estimate the demand for rail transportation in shipping wheat and the corresponding elasticity coefficients. By accomplishing this, the impact of changes in rail rates on quantities shipped by rail can be estimated. The degree of substitutability between rail and truck is also measured by estimating the elasticity of substitution. To accomplish the above, data on 1974 grain shipments is used to estimate demand functions from which the …

Winter Operating Constraints Of A High-Rate Infiltration-Percolation Treatment System For Wastewater, Eugene A. Miller

Electronic Theses and Dissertations

In order to comply with the federal Water Pollution Control act Amendments of 1972, many small communities in South Dakota are faced with the probability of having to update the quality of wastewater that is being discharged. Many of these communities presently use low-cost lagoons or stabilization ponds that provide various degrees of wastewater treatment. With lack of trained personnel for routine operation and maintenance and the inherent financial problems due to a limited tax base, small communities have a definite need for a simple and inexpensive form of wastewater treatment that ill upgrade effluents from stabilization ponds to meet …

Value Of Farm Groves To Nesting Songbirds In Sioux County, Iowa, Dennis L. Pluimer

Electronic Theses and Dissertations

A two-year study (1974-1975) of birds in Sioux County, Iowa farm groves is reported. Twenty-eight groves were visited and 66 species of birds (34 breeding and 32 migrant) were observed. The number of species sighted per farm varied from 8 to 40. Grackles, starlings, and robins were the most abundant breeding birds and white-throated sparrows, Harris’ sparrows, and Myrtle warblers were the most abundant migrants. Number of species of birds per section did not depend upon the number of farms in that section. The mean number of sightings in a two farm section was 395, while the mean number of …

The Effects Of Mental Warm-Up On Jump Shooting Accuracy Among Selected Boys' High School Basketball Players, Thomas J. Murphy

Electronic Theses and Dissertations

The purpose of this study was to determine the effect of mental practice, as a warm-up activity, on performance in shooting accuracy as measured by success in the execution of a fifteen foot jump shot at an angle of forty-five degrees. A second purpose was to determine whether a relationship existed between the change in shooting accuracy from pre-test to post-test and academic achievement as measured by each subject’s grade point average. The subjects were sophomore and junior members of the Roncalli High School basketball team of Aberdeen, South Dakota. They were divided into two groups through the use of …

Supplemental Space Heating Using A Solar Energy-Intensifier-Thermal Energy Storage System, James L. Julson

Electronic Theses and Dissertations

Many variations of solar concentrators, solar collectors, and solar thermal energy storage units are currently being investigated for use in agricultural space heating applications. However, limited data are available on the use of solar concentrators and thermal storage systems for specific agricultural applications in most climatic areas. Since useful alternate energy sources are of such great importance, research was conducted with the following objectives: 1. Evaluate the thermal efficiency and energy collecting capabilities of a solar energy-intensifier under actual climatic conditions. 2. Study the temperature and energy storage characteristics of a native stone thermal energy storage unit used with a …

Ecological Changes On Pine-Grassland Burned In Spring, Late Spring, And Winter, Janet Ruth Schripsema

Electronic Theses and Dissertations

The research with which this thesis is concerned will, hopefully, provide additional data to develop a proscribed fire management program with the following objectives: reduce wildfire conflagration hazards which exist because of unnatural fuel accumulation, eliminate or reduce exotic plants, invigorate stagnating prairies through reduction of litter, open up dense pine thickets, reduce forest insect problems, create firebreaks, develop a natural vegetative mosaic by preventing unnatural pine encroachment into prairies, and re-establishing pine savannahs (Shilts 1976).

Soil Salinity And Water Movement Through Soils As A Consequence Of Manure Applications, Ronald R. Schnabel

Electronic Theses and Dissertations

The objectives of this investigation were: 1) to determine if under dryland conditions the salts present in manure applied to the land would accumulate in the root zone to levels high enough to seriously limit crop production, 2) to determine if the ratio of monovalent to divalent cations present in the manure would upset the balance of these cations in the soil and cause soil structure problems, and 3) to determine if the salts and organic matter added by the manure would affect the soil’s ability to transmit water.

Studies Of The Establishment And Characterization Of Lactobacilli In The Digestive Tract Of Chickens, David Linn Voelker

Electronic Theses and Dissertations

One objective of this study was to determine if the inoculation of young chicks with crop-adhering strains of lactobacilli affects the numbers of lactobacilli, fecal coliforms, and fecal streptococci in the intestinal tract. Only one known study has been conducted to identify the lactobacilli which adhere to crop cells. In this study 86% of the crop lactobacilli could not be identified as any known species. On the other hand, in a study of the types of lactobacilli present in the intestinal tract, nearly all could be classified as known species, with most identified as Lactobacillus acidophilus. These defined differences between …

The Relationship Between Maternal Satisfaction With Family Day Care And Mother And Caregiver Child Rearing Attitudes, Patricia Ellis Straub

Electronic Theses and Dissertations

This study attempted to gain information related to the following questions: 1. Do the child rearing attitudes of a mother differ from the child rearing attitudes of the caregiver that she has selected for her child? 2. If the child rearing attitudes of a mother and caregiver differ, does the mother indicate less satisfaction with the child care situation than the mother whose attitudes are similar to her caregiver?