Digital Commons Network^™

A Doppler Radar Controlled Traffic Indicator, Dennis L. Carr

Electronic Theses and Dissertations

Traffic hazards on our highways are decreasing with the onset of new safety regulations, lower speed limits and highway design procedures. Unfortunately, economics prevent their complete elimination. New roadways are made safer while old roadways are pretty much ignored. Obstructions such as trees which restrict a motorist's view can be removed but it could be a monumental task to relocate other obstructions such as buildings, or to get the public to agree to the expense of leveling hills which lie too close to crossroads or private drives. Should there be an obstruction such as a hills close to a driveway, …

Response Of Strain To Amino Acid Supplementation And Lysine Requirements In Low Protein Layer Diets, John B. Carey

Electronic Theses and Dissertations

Two primary means of meeting amino acid requirements of laying hens, and nonruminants in general, are the use of diets high enough in protein to supply the needed amounts of all amino acids along with some excesses or by feeding low protein diets supplemented with minimum levels of essential amino acids needed for maximum performance. Proper supplementation of these low protein diets requires knowledge of the laying hen's requirement for amino acids and the interrelationships among amino acids, along with information about the influence of factors such as strain and management on these requirements . One purpose of the studies …

N-Acetyl-Dl-Tryptophan And Dl-Tryptophan Supplementation To Low Protein Starter Diets For Swine, Michael Walrod Cox

Electronic Theses and Dissertations

Supplementation of individual amino acids to low protein swine diets is of current interest in the swine industry due to attempts to reduce feed costs. Although cereal grains provide the majority of the total protein requirements for swine, the remainder must be supplied either from natural protein supplements or synthetic amino acids. Research has shown amino acid content and balance are of greater importance than total protein alone in meeting nutrient needs. Because of this, a great deal of effort has been directed toward determining single amino acid requirements of swine. Research of this nature is complicated by the varying …

Attitudes Of Teachers And Principals Toward Nutrition Education In South Dakota Elementary Schools, Mary Beth Baker Davis

Electronic Theses and Dissertations

A survey of 361 elementary teachers and 285 principals in the state of South Dakota measured attitudes toward nutrition education in the elementary school. Attitudes of elementary teachers toward teaching nutrition were also assessed. Relationships between attitudes, nutrition knowledge and other characteristics were determined. Results are based on the returned responses of 272 teachers and 262 principals. Significant positive correlations were observed between elementary teachers' attitudes toward nutrition education, nutrition knowledge, and their attitudes toward teaching nutrition. Attitude scores of teachers and principals were found to vary significantly with the inclusion of nutrition in school curriculum and favorable perceptions of …

Embryonic Screening And Isolation Of Pine Needle Abortive Factors, Keith A. Dehaan

Electronic Theses and Dissertations

Cattleman and veterinarian in the western states and Canada have noted the frequent occurrence of reproductive failure in cattle grazing ranges with tree stands of ponderosa pine (Pinus ponderosa). Consumption of the needles or buds from this tree have caused pregnant stock cows to abort or deliver weak calves. Retained fatal membranes are also frequently associated with pine needle abortion. Surveys conducted by the Black Hills Area Resource and Development Project in 1974 covering eight countries in western South Dakota and eastern Wyoming estimate that at least 600 calves were lost through pine needle abortion in a three year period …

The Effects Of Participation In Competitive Basketball On Weight-Loss And Selected Measures Of Basketball Related Skills, Gary Esboldt

Electronic Theses and Dissertations

Significant weight reduction and decrement in shooting performance resulted from participation in competitive basketball. College males (n=21) with a mean age of 19.4 yrs were assigned to 4 basketball-teams according to their level of involvement, intramural participants (untrained=10) and intercollegiate players (trained=ll). Eighteen Ss completed. the study. Each team consisted of 5 players per session. Anthropometric data of ht, wt, and % body fat were collected.

Treatment consisted of a 36 minute workbout comprised of 3 competitive basketball games of 12 minutes each on 2 separate days. Replicated pre- and post-treatment measurements of basketball related skills involved modified vertical jump, …

Geographic Information System Inputs To The Model Implementation Program For Water Quality Improvement, Jeffery C. Eidenshink

Electronic Theses and Dissertations

The purpose of the study id to demonstrate and evaluate the effectiveness of geographical information system inputs to water quality improvement programs. The particular program in this case is the federally sponsored Model Implementation Program (MIP). The water quality problems addressed in the study stem from non-point sources of pollution. The major non-point source pollution is soil erosion from agricultural land. It must be noted that the purpose of the study is not to evaluate the effectiveness of water quality improvement programs. That evaluation is the goal of MIP and beyond the scope of this stud. The information needs for …

An Estimation Of The Economic Value Of Water Used For Irrigation In Eastern South Dakota, Curtis Alan Everson

Electronic Theses and Dissertations

The general objective of this study was to estimate an economic value for water used for irrigation in the Big Sioux and Vermillion River Basins of eastern South Dakota. The accomplishment of the following specific goals led to the achievement of the primary objective:

1. to derive irrigated crop production budgets from primary data for each river basin,

2. to develop net returns for 1977 per irrigated composite acre net in each river basin,

3. to develop dryland composite acre net returns for 1977,

4. to develop and compare dryland and irrigated crop production budgets and composite acre net returns …

An Interlinear Translation Of John Lydgate's The Complaint Of The Black Knight With An Introduction, Notes, And Glossary / By Katherine Jane Thomas, Katherine Jane Thomas

Electronic Theses and Dissertations

No abstract provided.

A Study Of The Hydrocracking Of Hydrogenated Pyrenes And Tetralin Over A Nickel-Tungsten Ultrastable-Y Zeolite Catalyst, Damon Tat-Man Lai

Electronic Theses and Dissertations

No abstract provided.

Special Reflectance Of Hydrophytes, Robert G. Best

Electronic Theses and Dissertations

Identification of hydrophytes will improve the delineation and classification of wetlands on remotely sensed imagery. Spectral reflectance measurements of 10 species of hydrophytes were made with an Exotach radiometer during three phenological stages, flowering and early seed, senescence, and early emergent. Reflectance data were analyzed to determine significant (≥.95) reflectance differences between species in each of four spectral regions during each phenological stage. Eight species had significantly (≥.95) different reflectances during the flower and early seed stage. Only one species could not be spectrally separated during at least one phenological stage. The results indicate that films sensitive to both visible …

Winter Limnological Conditions In A Prairie Pothole And The Application Of Molecular Oxygen, Richard A. Fike

Electronic Theses and Dissertations

The physical, chemical, and biological conditions in Round Lake, Oakwood Lakes State Park, South Dakota were monitored during the 1977-1978 winter, and reaeration utilizing molecular oxygen was evaluated as a practical method to prevent winterkill. Ice and snow conditions after 20 December, 1977 allowed little light penetration, and phytoplankton numbers (6174/ml to 1668/ml) and chlorophyll concentration (46.6 mg/L to 14.1 mg/L) decreased throughout the winter. Aquatic bacteria and fungi comprised from 87.0% to 93.7% by number of the total cells identified (phytoplankton, bacteria, and fungi) in the lake water under ice. Dissolved oxygen declined to anoxic conditions after 19 January, …

The Effect Of Sodium Hexametaphosphate On Cottage Cheese Yields, Stephen T. Dybing

Electronic Theses and Dissertations

A major concern in the cottage cheese industry is the inefficient use of the available milk proteins. Currently, the methods of cottage cheese manufacture convert an average of only 74.9% of the milk proteins into cottage cheese, while the remainder are removed in the by-product whey (43, 56). As protein is the main determinant of both the yield and nutritional value of cottage cheese, if 25% of the available protein is lost to the whey, then potential cottage cheese yield and nutrition have been lost as well. The proteins lost in the whey are mainly -lactalbumin and β-lactoglobulin, which remain …

An Econometric Analysis Of The Cash Receipts From Crops In South Dakota, Dennis James Senger

Electronic Theses and Dissertations

It is the intent of this research effort to fill a void left in the previous research efforts. This study will not be concerned with how farmers adjust production in response to price or government policies. The attempt will be made to adept single equation regression models to the examination of how the level of prices and supplies affect a major portion of the income farming sector receives, specifically the cash crop receipts. The specific objectives of this study are as follows: 1. To construct an economet5ric model of South Dakota crop receipts. 2. To demonstrate the model’s use as …

A Profile Of Women In Broadcasting In South Dakota, Kathy Mitchell Austad

Electronic Theses and Dissertations

The purpose of this study is to develop a profile of South Dakota's typical women broadcasters. The profile will report how long they have worked in broadcasting, what their age was when they started in the industry, how many stations they have worked for, if their previous job was in broadcasting, if they were living in the present town before they took their current job, how they first heard about the opening for their position, and why they entered the broadcasting profession. The study is also an attempt to find out the attitudes of women in broadcasting toward job performance, …

The Profitability Of Alternative Marketing Strategies, Freddie Joe Baatz

Electronic Theses and Dissertations

The general objective of this study is to evaluate alternative marketing strategies to determine the net return of each under varying conditions. Specific objectives were: 1. Identify marketing strategies which might be used by South Dakota corn and soybean growers to cope with changing market conditions.

2. Determine marketing strategies which maximized net return for corn and soybean growers’ for the crop years from 1972 through 1977.

3. Analyze the use of basis as a marketing strategy.

4. Estimate the cost of new on-farm storage facilities.

Aubrey Sherwood Of The De Smet News, Dale Blegen

Electronic Theses and Dissertations

The author has selected two major contributions by Sherwood for the focus of this paper--Sherwood 's roles in developing the Dunn interests and the Wilder interests. In order to put those efforts into perspective, the author will review the history of The News and provide a brief biography of Aubrey Sherwood, emphasizing the kind of editor and businessman he was. This will set the stage for the exploring of the relationship between Sherwood and Harvey Dunn and the years Sherwood spent promoting the works of Dunn. The paper also will record the manner in which Sherwood used The News to …

Drying Of Large Cylindrical Bales With A Solar Energy Intensifier-Thermal Energy Storage System, Jose L. Calle

Electronic Theses and Dissertations

Recent energy conditions have caused a reexamination of the use of solar energy for the drying of agricultural crops. As a result, because of the great importance in developing alternate energy sources as substitutes for conventional energy sources, research was conducted with the following objectives:

1. Test a multi-use solar energy intensifier-thermal energy storage system using various drying systems for a low temperature hay drying application.

2. Evaluate the thermal efficiency in terms of useful energy collected for a solar energy intensifier used to provide supplemental heat to dry hay, under actual climatic conditions.

Newspaper Coverage Of The Woman's Suffrage Movement In South Dakota At The Time Of Statehood, Cecelia M. Wittmayer

Electronic Theses and Dissertations

This thesis will examine coverage by selected newspapers of the first and last campaign to secure the vote for women in South Dakota -- 1989-1890 and 1917-1918.

Comparative Studies Of Two Flax (Linum Usitatissimum) Cultivars For Stomatal Characteristics, Adaxial Stomatal Resistance, And Osmotic Potential, Patricia Ann Franks

Electronic Theses and Dissertations

Limitations on seed yield of flax (Linum usitatissimum L.) are a major concern of re searchers trying to develop higher yielding oilseed cultivars (37, 71). Dybing (37) stated that comparative studies of physiological and biochemical factors could provide necessary insight into the cause of these limitations. Based on repeated observations and yield trials of lines from the world collection, CI 2522 ('Linott') and CI 1194 (Grant) were selected as an "appropriate" pair for such studies (37). The basic criteria of selection of these two cultivars were a consistent difference in seed yield cross environments tested and similarities in such …

The Relationship Of Root-Pulling Resistance, Tassel Size, And Silk Delay With Yield In The F1 Hybrids Of 12 Corn (Zea Mays L.) Inbreds, David W. Peters

Electronic Theses and Dissertations

One of the major objectives of commercial and publicly supported plant breeding programs is the selection of corn lines which exhibit superior yielding ability under stress conditions. To accomplish such a goal, various plant characteristics have been examined. For example, strong, high volume root systems have been selected to increase resistance or tolerance to corn rootworm feeding and root rot. Large tussels are also selected, whether consciously or not, to maintain good pollen production over a long period of time under dry or adverse conditions. Similarly, many researchers stress selection of lines which exhibit a short period of time between …

A Nutrition Knowledge Survey Of Elementary Teachers In South Dakota, Karen E. Pearson

Electronic Theses and Dissertations

If the elementary teacher is to play a significant role in nutrition education, assessing their current status of nutrition knowledge is imperative. Such a data base can assist in determining the nature of educational efforts to adequately prepare elementary teachers for their role as nutrition educators. The primary objective of this research is to determine the present level of nutrition knowledge of elementary teachers in South Dakota. The findings of this study can assist state nutrition education program development by providing: (1) a representative picture of the nutrition knowledge of elementary teachers-presently in the field. (2) information regarding the major …

Evaluation Of South Dakota Collegiate Proscenium Arch Theatres, Kenneth W. Stofferahn

Electronic Theses and Dissertations

The purpose of this study is to determine the adequacies of the proscenium arch theatrical facilities for a comprehensive educational theatre program in the four-year degree granting institutions in the state of South Dakota. More specifically, answers to the following questions were sought:

1 . What are the minimum requirements for a proscenium arch theatre in a comprehensive educational theatre program?
A. What are the.minimum requirements for a proscenium arch stage?
B. What are the minimum requirements for a seating facility (house area) ?
C. What are the minimum requireme11ts for a lighting facility'?
D. What are the minimum requirements …

Variability And Breeding Behavior In Big Bluestem Populations From Eastern South Dakota, Arvid A. Boe

Electronic Theses and Dissertations

Three spaced-plant big bluestem (Andropogon gerardii Vit.) nurseries at Brookings, South Dakota were analyzed for their genetic variability and agronomic potential. Unselected native collections, the 1972 nursery, was comprised of 34 strains each representing a site collection from the eastern edge of South Dakota. The first cycle recurrent selection nursery, established in 1977, was comprised of progeny of 19 plants from the 1972 nursery that were exceptional seed producers in the drought year 1976. The second cycle recurrent selection nursery, established in 1976, was comprised of progeny of 33 agronomically desirable plants from open-pollinated nurseries established from difference southeastern South …

Determination Of Rnase Phenotype In Winter Barley Populations, Thomas Keith Blake

Electronic Theses and Dissertations

Selection for high levels of freeze resistance in winter barley (Hordeum vulgare L.) has resulted in development of cultivars which: 1) contain low RNase I activity in young shoot tissue and 2) a single RNase activity band in expanding leaf tissue at R_f 0.08. By contrast, seedlings of less-hardy cultivars typically have; 1) two RNase polymorphs (Rf=0.54 and 0.58) in young shoot tissue and 2) fours polymorphs (Rf-054, 0.58, 0.64 and 0.81) in expanding leaf samples. All enzymes migrate toward the anode (ph 7.9) and only the fastest moving band is common to expanded leaves in both groups of …

Nesting Chronology Of South Dakota Ducks, Stephen A. Tessmann

Electronic Theses and Dissertations

Duck broods were censused on 476 randomly selected plots in South Dakota during July of the years 1973 through 1976. Broods were also censused on wetlands located off the study plots both in July and August of these years, except in 1976 when no August counts were made. Hatching and nest initiation dates were determined by back dating from brood age classes. Early nesting species were mallards (Anas platyrhynchos) and pintails (A. acuta). Northern shovelers (A. clypeata), redheads (Aythya americana), and canvasbacks (A. valisineria) were intermediate nesters while blue-winged teal (Anas discors), gadwalls (A. strepera), and American wigeons (A. americana) …

Catfish Cage Culture In A South Dakota Power Plant Cooling Reservoir, Gary P. Wheeler

Electronic Theses and Dissertations

Studies were conducted to evaluate the Big Stone Power Plant cooling reservoir in northeastern South Dakota as a site for cage culturing channel catfish (Ictalurus punctatus) for market and sport fishery stocking. Temperatures suitable for catfish culture (21-32 C) were present in the reservoir from mid-March through mid-September 1978 and from mid-October through 4 November 1978, the end of the study period. Mean values of chemical parameters analyzed included dissolved oxygen - 8.8 mg/1, total available chlorine- 0.13 mg/1, pH - 8.6, specific conductance - 2228 micromhos/cm, total hardness - 1128 mg/1 as CaC03, calcium hardness - 570 mg/1 as …

Breeding Waterfowl Use Of Intermittent Streams, Mchenry County, North Dakota, Daniel E. Hubbard

Electronic Theses and Dissertations

Thirty-three 425 m segments of 4 intermittent streams in north central North Dakota were censured for breeding pairs of waterfowl in 1977 and 1978. Pair count data were available for 1976. Emphasis of this study was placed on the narrow meandering portions of the streams. High dabbling duck (Anas spp.) densities were observed in 1977 and 1978; 6.11 pairs per ha and 5.60 pairs per ha, respectively, for the first census of each year. Accepting blue-winged teal (A. discors), numbers of dabbler pairs were similar in 1976 and 1978. Dry conditions in 1977 caused lower numbers of all species of …

Hei-Gro Intravaginal Devices And Synovex-H Implants For Feedlot Heifers, James P. Goodman

Electronic Theses and Dissertations

Heifers gain at a slower rate, generally require more feed per unit gain and sell at a lower market price than steers. Due to the fact that heifer carcasses are commonly fatter and contain more waste trim than steers, the value of a heifer carcass is routinely less than that of a steer carcass of comparable yield and quality grade. In the past, the ways in which the livestock operator could increase his profit from feeding heifers were limited. Differential cost of feeder heifers versus steers and feed cost were the major criteria involved in his decision of whether or …

An Investigation Of The Validity Of Selected Submaximal Field Tests To Estimate Aerobic Capacity In Untrained Females, Barbara A. Moran

Electronic Theses and Dissertations

The purpose of this investigation was twofolds (1) to determine the validity of selected submaximal field tests used to estimate aerobic capacity, and (2) to determine the association of maximal oxygen consumption with the performance of selected submaximal field test. Eighteen females (X = l.9.4 yrs) volunteered to be Ss. Prior to the first two field tests, anthropometric data of ht and wt were collected and %BF, FW, and FFW were computed from skinfold measurements. The field tests investigated were the 12 min run, the 600 yd run, and the QCST. All measurements were analyzed for reliability and reproducibility by …