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The Abundance And Seasonal Distribution Of Tabanidae (Diptera) In Spink County, South Dakota, With A Study Of Geographic Variation In Chrysops Aestuans Wulp, Philippe Earl Cobb
The Abundance And Seasonal Distribution Of Tabanidae (Diptera) In Spink County, South Dakota, With A Study Of Geographic Variation In Chrysops Aestuans Wulp, Philippe Earl Cobb
Electronic Theses and Dissertations
This thesis is written in two parts. In part one I report on the results of a survey I conducted in Spink County, South Dakota, to determine the abundance and seasonal distributions of horse flies and deer flies (Diptera: Tabanidae), which bother livestock and people. The proposed Oahe Unit of the Pick-Sloan Missouri River Basin Program will provide many additional acres of tabanid habitat to this area. This survey could be compared with future studies in determining the effects additional acres of tabanid habitat will have had on the populations' levels. The second part of my thesis is an attempt …
Sulfur Supplementation With Soybean Meal Or Urea For Feedlot Lambs, Joseph Cletus Ebert
Sulfur Supplementation With Soybean Meal Or Urea For Feedlot Lambs, Joseph Cletus Ebert
Electronic Theses and Dissertations
One of the urgent tasks facing agricultural scientists throughout the world is that of supplying sufficient food of adequate quality to the ever-increasing human population. The problem is not only that of supplying calories but also providing adequate quantity and quality of protein. Ruminant animals have the ability to convert much plant energy, not utilizable or having low availability for man, and nonprotein nitrogen products into body tissues. Ruminant animals, therefore, can have a very important role in providing food for the human population. The most widely used nonprotein nitrogen compounds urea. The process of building amino acids into body …
Influence Of Growth Stage, Stubble Height, And Cutting Frequency On The Carbohydrate Reserves And Yield Of Switchgrass, Richard A. Lockert
Influence Of Growth Stage, Stubble Height, And Cutting Frequency On The Carbohydrate Reserves And Yield Of Switchgrass, Richard A. Lockert
Electronic Theses and Dissertations
The purpose of this study was to determine the effects of 1) plant growth stage at the time of initial harvest, 2) stubble height, and 3) frequency of harvesting on switchgrass herbage yields and carbohydrate reserves. The research site was located on the South Dakota State University Dairy Research Unit, 1 km north of Brookings. Climatological data were gathered at the Agronomy Research Farm, 3.2 km southeast of the experimental site. Average annual precipitation over the years 1893-1965 was 52 cm of which 80% or 41.6 cm occurred during the April to September period. Average annual temperature is 6 C. …
Synthesis Of S-(1-Diazo-2,2,2-Trifluorethyl) Cysteine Dioxide : A Potential Gutamine Antagonist, Robert M. Olson
Synthesis Of S-(1-Diazo-2,2,2-Trifluorethyl) Cysteine Dioxide : A Potential Gutamine Antagonist, Robert M. Olson
Electronic Theses and Dissertations
Compounds affecting the utilization of L-glutamine have a comparatively long history in the field of cancer chemotherapy. The Streptomyces antibiotics, azaserine (0-diazoacetyl-L-serine) and DON (6-diazo-5-oxo-L-norleucine) inhibit to varying extents those aminations in which glutamine serves as an amino group donor. This inhibition is achieved in at least one case by the glutamine antagonists alkylating the sulfhydryl group of the enzyme that catalyzes the amino group transfer of glutamine. A distinguishing feature of the diazo analogs of glutamine is the very reactive diazo group that enhances nucleophilic reactions on the adjacent carbon atom. Because of the increased reactivity created by the …
Feeding Of Hatchery-Reared Brown Trout (Salmo Trutta L.) In Relation To The Diet In A South Dakota Stream, Richard W. Mccoy
Feeding Of Hatchery-Reared Brown Trout (Salmo Trutta L.) In Relation To The Diet In A South Dakota Stream, Richard W. Mccoy
Electronic Theses and Dissertations
One thousand five hundred catchable brown trout (17-26 cm) were stocked into the South Fork of the Yellowbank River May 17, 1973. Samples were taken one month apart from May 22, 1973, through October 29, 1973. Fifteen-minute drift samples were collected every hour for 24 hours and trout were captured every 4 hours. Trout captured ruing the study varied in condition ® from 1.34 to 2.55. Condition progressively decreased through August, rose in September, and decreased again by the October sample. The average weight of brown trout increased through the September sample and decreased in October. Two peaks in number …
Income Expectations Among Adc Recipients In Rapid City, South Dakota : An Application Of Discriminant Analysis, Craig Edwards Clark
Income Expectations Among Adc Recipients In Rapid City, South Dakota : An Application Of Discriminant Analysis, Craig Edwards Clark
Electronic Theses and Dissertations
In the present study the question of expectations of welfare recipients, specifically income expectations, is addressed. The general population chosen for examination are women and children receiving Aid to Dependent Children (ADC) payments. This general population is examined in an attempt to determine the specific factors contributing to positive or negative income expectations. These factors cover a wide range of socio-economic considerations, such as employment, receivable income, race, age of recipients~ the number of dependent children, and many other factors. The specific problem may be stated as follows: Does an identifiable, identical set of variables exist among unmarried ADC recipients …
Factors Associated With Population Changes In Rural South Dakota Communities, Sidney G. Goss
Factors Associated With Population Changes In Rural South Dakota Communities, Sidney G. Goss
Electronic Theses and Dissertations
Students of demography have long been aware that populations change over time: they are dynamic. The determination and explanation of population change forms the central focus of population analysis, and the question arises as to what factors best explain observed variations in population changes occurring in South Dakota rural towns. Consequently, this study investigates the following problem. What is the association between selected demographic, geographic, economic, and social factors and the population changes that transpired from 1960 to 1970 in South Dakota incorporated places classified as rural in both 1960 and 1970? Specifically, the study attempts to determine: 1. What …
The Effect Of Market Weight And Ration Concentrate Level On Carcass Traits Of Bulls, Heifers And Steers, Peter B. Smith
The Effect Of Market Weight And Ration Concentrate Level On Carcass Traits Of Bulls, Heifers And Steers, Peter B. Smith
Electronic Theses and Dissertations
Increasing worldwide demand for animal protein, growing pressure on the available cereal grains by a multiplying world population and greater availability of United States agricultural products worldwide make it imperative that beef volume and production efficiency increase. Consumer demand for a lean, high quality, trim product dictates production of rapid growing, efficient beef animals with minimum fat deposition at market weights. In the face of increasing demand, governmental constraints in the form of economic controls, ecological considerations and restrictions in the use of antibiotics and growth promoting agents force the beef industry to examine and improve production efficiency. Currently, packers …
The Economic Feasibility Of Confinement Feedlots And The Analysis Of Seasonal Marketing Variations For Feeder Cattle In South Dakota, Daniel W. Francke
The Economic Feasibility Of Confinement Feedlots And The Analysis Of Seasonal Marketing Variations For Feeder Cattle In South Dakota, Daniel W. Francke
Electronic Theses and Dissertations
South Dakota apparently produces an adequate quantity of feeders and feed grains to substantially increase slaughter cattle production. Furthermore, South Dakota prices for feed grain, roughage, and feeder cattle are equal to, or less than, the prices for these inputs in other areas where cattle feeding has flourished in recent years. It should also be determined how South Dakota farmers might increase fat cattle production. Therefore, in an attempt to explain South Dakota's slow cattle feeding growth and possibly help farmers in South Dakota and neighboring areas develop the cattle feeding industry, the following problems were researched. First, this area …
Computerized Construction Of A Seasonal Flow-Duration Table, Gregory C. Meyer
Computerized Construction Of A Seasonal Flow-Duration Table, Gregory C. Meyer
Electronic Theses and Dissertations
Various graphical methods have been developed to handle the statistical data gathered for hydrological studies. Those most familiar are probably the hydrograph, the mass curve, and the flow-duration curve. The first two graphical techniques have been in use for numerous years and as a result, are described in many textbooks. The first published writings dealing with the flow-duration curve are believed to have been released in about 1878. However, the general use of the flow-duration curve started around the year 1915, but as late as 1934 it was felt that many of the fundamental principles of the flow-duration curve were …
A Study Of Engineering Services For South Dakota Hospitals, Duane Robert Nelson
A Study Of Engineering Services For South Dakota Hospitals, Duane Robert Nelson
Electronic Theses and Dissertations
The hospitals in South Dakota, like all other hospitals, need engineering services for efficient and economical operation. Presently, about one-half of the hospitals licensed by the State Health Department are accredited by the Joint Commission on Hospital Accreditation. Mr. Norton, Administrator at Yankton's Sacred Heart Hospital, indicated that about one-half of South Dakota's hospitals are meeting the required standards, for hospital safety and equipment maintenance, of the Joint Commission on Accreditation of Hospitals. The larger hospitals in the state have personnel providing engineering services, but these larger hospitals comprise a small part or' the total health care facilities in the …
An Analysis Of The Earnings-Price Index As An Investment Tool, Raymond J. Wood
An Analysis Of The Earnings-Price Index As An Investment Tool, Raymond J. Wood
Electronic Theses and Dissertations
An investor maintains a portfolio containing various quantities of such items as money, bonds, securities, or other physical goods which comprise his wealth. Assuming that the investor attempts to maximize his wealth subject to his preferences toward risk, then the investor must make a change in his portfolio to maintain equilibrium if there is a change in the condition affecting either risk, appreciation, rate of return or any of the assets in his portfolio. As a result, the rates of return of the various forms of wealth become very important, i.e., the expected rate of return on bonds vis-a-vis the …
Pathos And Its Paradox : The Vision Of J. M. Synge, William K. Schultz
Pathos And Its Paradox : The Vision Of J. M. Synge, William K. Schultz
Electronic Theses and Dissertations
For J. M. Synge what Francis Bickley calls the "hard light" of reality and the "passion" of imagination are combined in the character of the Irish peasant. As Bickley again observes, "in this people, as he saw it--and he had no sentimentality to mar his vision--the god and the beast were mixed in just proportions; corresponding to that juxtaposition of exaltation and brutality which figures in his theory of poetry." It is the poetic richness of Synge's language, too, that juxtaposes the potential of language and the potential of life. It is a rhythmic language that pulsates with the fullness …
Legislative Efforts Pertinent To The Subject Matter Of Selected Debate Propositions From 1920 To 1967, Michie J. Wienk
Legislative Efforts Pertinent To The Subject Matter Of Selected Debate Propositions From 1920 To 1967, Michie J. Wienk
Electronic Theses and Dissertations
National intercollegiate debate propositions have dealt with topics of national or international concern since 1920. In A History of Speech Education in America, L. Leroy Cowperthwaite and A. Craig Baird stated that the subjects selected for debate propositions have clearly reflected the political, 'economic, and sociological issues of the time. Since the topics selected for intercollegiate debate refer to national and international subjects that are reflective of timely issues, it may be beneficial to those concerned with topic selection, and. anyone else involved. or interested in debate, to determine to what extent the national intercollegiate debate propositions have been reflected …
Evaluation Of Duck Production On Waterfowl Production Areas In Northeast North Dakota, Gerald L. Heismeyer
Evaluation Of Duck Production On Waterfowl Production Areas In Northeast North Dakota, Gerald L. Heismeyer
Electronic Theses and Dissertations
An investigation of duck production on six Waterfowl Production Areas (WPA’s) in northeastern North Dakota was conducted during 1970-73. This investigation was conducted in conjunction with habitat-manipulation study by the Northern Prairie Wildlife Research Center that entailed prescribed burning of three WPA’s. Wetland habitat conditions, breeding populations and nesting were evaluated all four years. Brood observations were made during the last three years and nesting cover was evaluated during the last two years of investigation. Wetland habitat conditions were generally favorable during the first three years of investigation but in 1973 wetland conditions were extremely poor due to low precipitation …
Habitat Preferences And Food Habits Of Striped Skunks In Eastern South Dakota, Melvin S. Moe
Habitat Preferences And Food Habits Of Striped Skunks In Eastern South Dakota, Melvin S. Moe
Electronic Theses and Dissertations
Habitat preferences of striped skunks (Mephitis mephitis) in Brookings County, South Dakota, were determined rom the relationship of nighttime roadside indices to 25 habitat variables of 277, 1-square mile plots. Winter tracking was also conducted. Skunks were collected on the study area in 1972-1972, and contents of 59 stomachs and 63 colons were studied to determine food habits. Indices of prey abundance in different habitat types were obtained from snap-trap surveys. The 25 variables accounted for 14.9 percent of the variation in skunk numbers. The relationships of three of these variables to skunk numbers were significant (P<0.05). The significant variables and the variation accounted for by each were: (a) number of areas of idle grassland, 6.3 percent; (b) number of rockplies, 1.5 percent; and (c) acreage of idle grassland, 1.3 percent. Idle grasslands were the main activity centers of skunks tracked during the winter. Food habits were analyzed for the periods March-April, May-June, July-August, and September-November. Insects were the most frequently found food item in al time periods except March-April, during which mammals occurred more frequently. Mammals made up the largest volume of food in March-April and May-June. Amphibians made up the greatest volume in July-August, while amphibians, mammals, and insects were found in nearly equal volumes in September-November. Bird remains occurred during all time periods. Eggs were found in May-June and July-August. Meadow voles (Microtus spp.), the most frequent mammalian food item during all time periods, were common only in habitat types having heavy residual cover. Idle grassland is an important nestling cover for gamebirds and waterfowl. Since the number of areas of this cover type apparently has a stronger relationship with skunk numbers than its total acreage, grassland nesting cover might best be managed in large, homogeneous blocks. Areas managed in this way would probably support lower skunk densities than more diverse areas containing equal acreages of idle grassland, thus reducing nest predation by skunks. Skunk control programs should be most efficient when centered around idle grassland and rockplies.
The Existence Of Reversed Digit Addends Modulo N, Lance Adair Wheeler
The Existence Of Reversed Digit Addends Modulo N, Lance Adair Wheeler
Electronic Theses and Dissertations
One of the most interesting and commonly pursued branches of mathematics is the study of number theory. Its appeal lies not in its applicability, but in a fascination for the properties of the numbers themselves. It should be noted that, on occasion, problems of number theory have contributed to more pragmatic branches of mathematics and hence to a practical application. Frequently this happens without the original author's expectation or intention since he was merely remarking on what he considered to be a singular or unusual facet of the employed number system. Such a problem is that which involves the rearrangement …
Volatility, Drift And Phytotoxicity Of Dicamba To Corn When Applied With Additives, Bart A. Brinkman
Volatility, Drift And Phytotoxicity Of Dicamba To Corn When Applied With Additives, Bart A. Brinkman
Electronic Theses and Dissertations
Herbicides have become an important asset to the farmer since the discovery of 2,4-D as a useful weed killer. Although herbicides are a relatively new and useful tool, various hazards are associated with their use. Drift and volatility are of primary concern. Air pollution is recognized as an environmental detriment to both plants and animals. The prevention of herbicide drift and volatility is necessary to maintain an environment suitable for many plant habitats. Dicamba (3,6-dichloro-o-anisic acid) is used to control broadleaf weeds in corn, small grains, lawns, and rangelands. Sometimes nontarget areas adjacent to crops are affected seriously because of …
Development Of A Simulation Game In The Area Of Housing, Beverlee Olson Buenning
Development Of A Simulation Game In The Area Of Housing, Beverlee Olson Buenning
Electronic Theses and Dissertations
This study focused on the development of a simulation game to teach certain aspects of housing. Underlying the development of the game was the assumption that a simulation game can be an effective teaching technique. The development of the game involved the use of a simulation design: objectives and generalizations for housing, questions that required decision-making, and designing a game board. More precise objectives were (1) to gain information about simulation gaming, particularly current research in the area of gaming in home economics, and (2) to develop a game for use in teaching specific behavioral objectives in the area of …
An Economic Analysis Of The Impacts Of Weather Modification On Crop And Livestock Production In Southeastern South Dakota, James W. Dunn
An Economic Analysis Of The Impacts Of Weather Modification On Crop And Livestock Production In Southeastern South Dakota, James W. Dunn
Electronic Theses and Dissertations
The procedure used for the study was the application of linear programming to an aggregate farm. The characteristics of this aggregate farm were determined from data compiled by the South Dakota Crop and Livestock Reporting Service, with assistance from Dr. Wallace Aanderud and Dr. Richard Rudel, both with the Economics Department at South Dakota State University. The method of an aggregate farm approach was used because the desired estimates are of an aggregate nature. The activities were limited to their actual historical limits, in order to obtain results as representative of the actual effects of weather modification as possible. This …
Permeability And Consolidation Characteristics Of Soils Producing Irregular-Shaped Compaction Curves, Terry L. Forest
Permeability And Consolidation Characteristics Of Soils Producing Irregular-Shaped Compaction Curves, Terry L. Forest
Electronic Theses and Dissertations
Through many years of study, it has been found that one of the best methods of classifying soils is by strength, and the best and most economical method of obtaining strength is by compaction. By compacting a soil, the shear strength is increased permeability decreased, and future settlement or consolidation decreased. These properties. of' permeability and consolidation are important in the design of any structure whether it is a dam, single or multi-story building, bridge, highway, or lagoon. The engineer must be sure that the consolidation and permeability of the soil are such that the structure will be able to …
Accuracy Of College Women Shooting Set Shots As Affected By Selected Training Programs, Cindy Jane Fliss
Accuracy Of College Women Shooting Set Shots As Affected By Selected Training Programs, Cindy Jane Fliss
Electronic Theses and Dissertations
Power is defined as the product of strength times the speed of muscle contraction. Increased strength results in the ability to apply more force and thereby contributes to power. If all other factors remain equal, greater strength often results in better performance. In some athletic events, strength is the primary contributor and is, therefore, fundamental to excellence in those events. With the continual improvement of play in girls' basketball, the participants will need to be accurate outside shooters. The investigator felt that one factor that might hinder girls from being accurate outside shooters was the lack of strength to get …
Consumer Installment Loan Risk: A Discriminant Analysis, Ronald Edward Fisher
Consumer Installment Loan Risk: A Discriminant Analysis, Ronald Edward Fisher
Electronic Theses and Dissertations
All lending institutions are faced with the fact that a portion of their outstanding loans will not be repaid. A loan officer, or other designated individual, is normally charged 'it h the responsibility of evaluating loan applicants in terms of their comparative risks in order to reduce this inherent cost of doing business. The loan officer has traditionally evaluated consumer installment loan applicants using the three C's rule: character, collateral and capacity to repay, as his guideline for evaluating risk. The information required for this type of evaluation came from the data on the loan application, a credit check and …
Inversion In Chlorophytum Elatum, Carolyn A. Gregory
Inversion In Chlorophytum Elatum, Carolyn A. Gregory
Electronic Theses and Dissertations
The spider plant, Chlorophytum elatum R. Br., is a member of the lily family. It originated in south Africa and has spread all over the world as an ornamental plant. The plant occasionally sets seeds, but its propagation depends mainly on vegetative means. This method of reproduction provides the plant with chances or extended exposures to various environmental stresses, and genic and/or chromosomal mutations may result. In one of the Chlorophytum stocks maintained in the Botany greenhouse, Chen first noted that heterozygous inversion existed. Further cytological observation of another stock morphologically similar to the one Chen observed also revealed the …
A Survey Of The Attitudes Of School Board Members In South Dakota Toward School Guidance Programs, Alice Marie Gehrke
A Survey Of The Attitudes Of School Board Members In South Dakota Toward School Guidance Programs, Alice Marie Gehrke
Electronic Theses and Dissertations
The following two primary purposes of the study were established: 1. To assess the attitudes of South Dakota school board members toward school guidance programs. 2. To assess the school board members attitudes toward guidance as identified through the variance of sex, size of school district, occupation, level of education attained, length of service on the school board, parent of school age children, employment of a certified counselor, and counselor assignment. Eight null hypotheses were generated for this study. The hypotheses were: 1. There are no differences in the attitude£ of male and female school board members toward guidance programs. …
The Application Of Erts-1 Multispectral Imagery For Crop Resource Evaluation And Inventory, James Lester Heilman
The Application Of Erts-1 Multispectral Imagery For Crop Resource Evaluation And Inventory, James Lester Heilman
Electronic Theses and Dissertations
The need to provide current information on the condition of our agricultural resources has never been as apparent as at the present time. The world demand for agricultural commodities has caused our agricultural exports to increase. The problem of satisfying worldwide demand and still maintaining adequate food supplies at home requires that up-to-date information on the condition of cur food resources be provided. Information in the past has been furnished by the Agricultural stabilization and Conservation Service and the Crop Reporting Service. This information has been largely historical in nature due to the time required to compile and evaluate it. …
The Effect Of Simulated Hail Damage On Oats, David Gaylord Hanson
The Effect Of Simulated Hail Damage On Oats, David Gaylord Hanson
Electronic Theses and Dissertations
With all of the advances in science and technology, the farmer is still helpless against the powers of nature. A natural disaster, such as a hailstorm, can seriously affect an individual fanner, or a small region. During the course of a growing season, the sum of these hailstorms can result in a substantial loss to the total farm economy. Hail insurance provides a way for farmers to protect themselves from losses due to hail, but the estimation of losses in a hailed field is a difficult job since the entire field is often hit leaving no check area from which …
The Public Relations Efforts Of South Dakota Colleges And Universities As Reflected By The Attitudes Of South Dakota High School Seniors, Daniel F. Jorgensen
The Public Relations Efforts Of South Dakota Colleges And Universities As Reflected By The Attitudes Of South Dakota High School Seniors, Daniel F. Jorgensen
Electronic Theses and Dissertations
This study will concentrate on one small, yet vital, public--the public composed of high school seniors. If this public is "aware" of what the South Dakota colleges and universities have to offer, then the public relations programs of those schools are having some effect. If the students are preparing for a college career, then it is important to the future of the state's higher education that they are aware of the costs and the offerings of its schools. Daniel Gladstone, a high school senior from New Jersey, supported this thinking in a personal opinion column in "Saturday Review." He said …
Field Comparisons Of Hydraulic Conductivity Methods And Drainage Envelope Hydraulic Characteristics, David E. Kramer
Field Comparisons Of Hydraulic Conductivity Methods And Drainage Envelope Hydraulic Characteristics, David E. Kramer
Electronic Theses and Dissertations
South Dakota is presently planning for the irrigation of approximately one-half million acres of land in the proposed Oahe Unit located in the north central part of the state. The main body of land in the Oahe Unit is the Lake Plain area which was once the lakebed of post-glacial Lake Dakota. Approximately one-fifth of the total cost of the project will be for drainage systems. The Bureau of Reclamation is responsible for the design of the Oahe project. They are presently using a transient drainage spacing equation developed by Glover in the design of the drainage system. The use …
Molecular Orbital Calculations For [Mo(Cn)₈]⁴⁻ An Investigation Of Eight Coordination Geometries, Patty S. Herman
Molecular Orbital Calculations For [Mo(Cn)₈]⁴⁻ An Investigation Of Eight Coordination Geometries, Patty S. Herman
Electronic Theses and Dissertations
Until the last twenty years only a few discrete 8-coordinate transition metal complexes were known. Increased interest in 8-coordination has led to the synthesis and characterization of a great many 8-coordinate compounds. Application of 3-dimensional X-ray analysis has made structural determination of these complexes much simpler. Two configurations dominate the stereochemistry of discrete 8-coordination, the D4d square antiprism and the D2d triangular dodecahedron. Both of these structures can be obtained by distorting the cube, a configuration not commonly observed. A 45° rotation of one square face of a cube about the perpendicular axis through that face results in the antiprism …