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Electronic Theses and Dissertations

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Drought Resistance Of Ponderosa Pine And Eastern Redcedar On Central South Dakota Soils, Gerald L. Jensen Feb 1968

Drought Resistance Of Ponderosa Pine And Eastern Redcedar On Central South Dakota Soils, Gerald L. Jensen

Electronic Theses and Dissertations

Afforestation of the Missouri River hills along the Great Lakes of South Dakota's reservoirs is a varied problem. Most of the flood plain vegetation, of which Eastern cottonwood, Populus deltoides Bartr is the dominant, has been flooded by the impoundments. The new, shores are mostly grasses of which the potential natural vegetation according to Kuchler (1964) would be in the Agropyron-Stipa association. Hardwood forest, mostly the Ulmus Fraxinus type, exists along tributaries of the Missouri. There are scattered stands of Eastern red cedar, Juniperus virginiana L., on the north facing slopes of the hills. There are several pockets of shrub …

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Determining Alternator Reactances From Load Test Data, Rohit K. Jani Jan 1968

Determining Alternator Reactances From Load Test Data, Rohit K. Jani

Electronic Theses and Dissertations

It is the purpose of this paper to establish equations, with some assumptions, for calculating the reactances of a synchronous generator, using load test data, and to analyze the results. For this purpose a report on power angle measurements on Unit No. 8, at Station 16, (Waukegan) of The Commonwealth Edison Company, Chicago, Illinois, was used.

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An Investigation Of Printing Education In Taiwan, Ben Meikong Hwang Jan 1968

An Investigation Of Printing Education In Taiwan, Ben Meikong Hwang

Electronic Theses and Dissertations

The purposes of this study are: (1) To analyze the factors which historically affected China in losing its legacy of printing after the Sung Dynasty. (2) To investigate the current need of school education and on-the-job training of the printing industry in Taiwan. (3) To determine if printing in the future should be taught in the arts or in the sciences. (4) To provide information for predicting the trend concerning the professional education of printers in Taiwan.

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The Field-Effect Transistor As A Mixer, Garald C. Sundberg Jan 1968

The Field-Effect Transistor As A Mixer, Garald C. Sundberg

Electronic Theses and Dissertations

The objective of this dissertation is to analytically and experimentally investigate the field-effect transistor as a mixer. The areas of study undertaken are: 1. Analysis of the parameters affecting mixing action. 2. Static-bias potentials for optimum mixing. 3. Conversion noise figure. This area also involves the correlation between amplifier and mixer noise factors. 4. Cross-modulation distortion. 5. High frequency mixing.

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Beneficial Effects Of An Intercepting Trench On Degraded Ground Water In The Vicinity Of A Refuse Landfill, William George Hendrickson Jan 1968

Beneficial Effects Of An Intercepting Trench On Degraded Ground Water In The Vicinity Of A Refuse Landfill, William George Hendrickson

Electronic Theses and Dissertations

The concern for ground water contamination resulting from the sanitary landfill method of disposal, the realization that adequate data were lacking, and the availability of a refuse landfill that could be used for obtaining more pertinent data, resulted in several research projects at this university. These included: a study of the effects of the refuse landfill on the quality of the underlying ground water (5) ; a study of the areal extent of the contamination and the variance due to seasonal changes (6); and a study of the effects of the refuse landfill on the subsequential uses of the related …

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Analysis Of Two Granular Pesticide Applicators For Experimental Plots, Gerald Albert Stangl Jan 1968

Analysis Of Two Granular Pesticide Applicators For Experimental Plots, Gerald Albert Stangl

Electronic Theses and Dissertations

Pesticides are applied to agricultural crops to maximize returns on the investment by the farmer. Granular pesticides are replacing liquid sprays in many applications. Granules are composed of a sorptive, inert carrier material impregnated with a toxicant which is released when the granules contact water. Application of pesticides by granular carrier has numerous advantages over liquid application: 1. Ease of handling and of application as no mixing or addition of water is necessary in the field. 2. Less drift because of particle weight, and thus reduced operator exposure to toxic chemicals. 3. Less total weight applied (10 to 20% of …

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An Evaluation Of The Pre-College Guidance Received By The College Dropout And The College Persister, Douglas John Soule Jan 1968

An Evaluation Of The Pre-College Guidance Received By The College Dropout And The College Persister, Douglas John Soule

Electronic Theses and Dissertations

The amount of pre-college information that college dropouts received, as compared to college persisters, was the focal point of this study. This factor, along with certain external and internal forces, may determine the extent of college success. The objectives of this investigation have been to determine if there exists differences in the amount of pre-college information college dropouts received as compared to college persisters. Specifically, this investigation will seek answers to the following questions: 1. Is there a difference in the number of visits the dropout and the persister had with his high school counselor? 2. Is there a difference …

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Optimum Concrete Design With Random Variable Selection, Ima F. Goldman Jan 1968

Optimum Concrete Design With Random Variable Selection, Ima F. Goldman

Electronic Theses and Dissertations

The design of a Civil Engineering structure has been considered an art based upon science; for though the Strength of Materials formulae give the general solution for the problem, the fact that the particular chosen solution be a good one, relies on the ability of the designer. Indeed, intuition, experience, or just luck are necessary to pick out conveniently the elements that need to be chosen in the formulae. Thus, a confrontation with a design problem requires an answer to the question: What is the optimal (or fairly close to the optimal) solution that can be obtained for the given …

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Feasibility Of Vacuum Dewatering Of Combined Water Softening And Wastewater Sludges, Michael Gene Sisk Jan 1968

Feasibility Of Vacuum Dewatering Of Combined Water Softening And Wastewater Sludges, Michael Gene Sisk

Electronic Theses and Dissertations

There is an extensive amount of published literature regarding the principles of dewatering by vacuum filtration. However, the review of the literature indicated that very little work has been done regarding the vacuum filtration of combined lime sludge and sewage sludge. The Komline-Sanderson Company, manufacturers of the coil media vacuum filter, relate that several municipalities throughout the country have attempted to dewater combined sludges, but obtained unfavorable results. This appeared to result from incorrect proportioning of the two sludges and possibly the procedures used in conditioning the sludges prior to and after combining. Contrary to this, two cities in Nebraska, …

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Study Of Maintenance Deficiencies, Operating Horsepower, Fuel Efficiency, And Pump Efficiency Of Internal Combustion Engine Powered Pumping Plants, George Robert Durland Jan 1968

Study Of Maintenance Deficiencies, Operating Horsepower, Fuel Efficiency, And Pump Efficiency Of Internal Combustion Engine Powered Pumping Plants, George Robert Durland

Electronic Theses and Dissertations

The transition of sugar beet production from Western South Dakota to the southeastern area of the state, in 1964 and 1965, brought many changes in cropping practices. These changes occurred in the preparation of the seedbed, the seeding process, cultivation practices and methods of har�esting. The farmers, who switched to beet production, in this area were confronted with cropping practices that were completely foreign to them. They were offered assistance by Sugar Beet Company fieldmen, Cooperative Extension personnel and South Dakota State University research personnel. With an experienced background in sugar beet production, the company fieldmen were able to direct …

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Relationships Between Beef Palatability And Bone Density, Bone Hardness And Other Maturity Indicators, David E. Schafer Jan 1968

Relationships Between Beef Palatability And Bone Density, Bone Hardness And Other Maturity Indicators, David E. Schafer

Electronic Theses and Dissertations

A trend in recent years has been for meat scientists to concentrate much of their effort on obtaining a more complete understanding of those factors which affect or contribute to meat quality or palatability. Some of these topics have ranged from the effect of nutritional regime on palatability to the effects of hormone treatments, antemortem stress conditions, breeds or types, sex, marbling levels, maturity or age, cooking techniques, chemistry of muscle and fat, measurement of muscle fiber diameter and extensibility, connective tissues and, finally, color of muscle and fat. This emphasis on factors relating to beef palatability has also caused …

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Measurement, Analysis, And Reduction Of Noise Produced By An Agricultural Tractor, Dennis W. Ryland Jan 1968

Measurement, Analysis, And Reduction Of Noise Produced By An Agricultural Tractor, Dennis W. Ryland

Electronic Theses and Dissertations

Agricultural tractor noise has become an increasing concern of farmers, tractor and ·cab manufacturers, research engineers, and medical doctors. Requests from farmers concerned with reducing the noise levels in tractor cabs are being received at the Agricultural Engineering Department at South Dakota State University. The purpose of this study was to find suitable solutions to the problem of excessive noise produced by agricultural tractors. The objectives of this study were: 1. To develop noise reduction treatments for an agricultural tractor. 2. To evaluate the treatments on the basis of total loudness at the position of a seated operator's head. 3. …

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Preliminary Investigation Of A New Frequency Modulator, David A. Cleveland Jan 1968

Preliminary Investigation Of A New Frequency Modulator, David A. Cleveland

Electronic Theses and Dissertations

Communication is an inherent characteristic of the human species. Man has continually strived to improve his methods of communicating with his fellow man. With the understanding of electricity and its subsequent control, a powerful tool became available; one important use of this tool is in the field of communications. First applications of electricity to communications involved physical connections between sending and receiving instruments. When scientists desired to eliminate the direct connections between the communicators, new methods had to be devised. The new methods which were developed involved the transmission of electromagnetic energy through space. One of the basic electrical waveforms …

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Optimization Of Cover Plated Steel Frames By Linear Programming, Chong Soo Cho Jan 1968

Optimization Of Cover Plated Steel Frames By Linear Programming, Chong Soo Cho

Electronic Theses and Dissertations

Structural engineers are required to design economical, reliable, and aesthetic structures which conform to given requirements and constraint conditions. To do this requires a knowledge of structural analysis methods and behavior of structural materials. In principle, structural engineers can work with any kind of structural material and any type of structure such as a two dimensional structure (frames, plates, . . . , etc.) or a three dimensional structure (shells, plates, . . . , etc.) in order to fulfill the requirements. There exists an infinite number of possible ways to design a proposed structure as well as a multitude …

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Describing Function Analysis Of The Field-Effect Transistor Oscillator, Edward C. H. Chang Jan 1968

Describing Function Analysis Of The Field-Effect Transistor Oscillator, Edward C. H. Chang

Electronic Theses and Dissertations

Recently, due to advances in fabrication techniques, it has become possible to manufacture field-effect transistors having electrical properties which make them very attractive for circuit applications. In the bipolar transistor both positive and negative free carriers take part in the functioning of the device; hence the name bipolar. On the other hand, in unipolar devices, the current is carried only by the free majority carriers in the conducting channel and no essential role is played by the small number of minority carriers; hence the name unipolar. The purpose of this paper is to study the applicability of the describing-function method …

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A Gravel Envelope For A Tile Drain In A Coarse Silt Base Material, Dale A. Bucks Jan 1968

A Gravel Envelope For A Tile Drain In A Coarse Silt Base Material, Dale A. Bucks

Electronic Theses and Dissertations

In recent years, drainage has been recognized as essential to the development of a large-scale irrigation project. South Dakota is now planning for the irrigation of approximately one-half million acres of land through the proposed Oahe Irrigation Unit located in the northeastern part of the state. There are two main bodies of land in the Oahe Unit – the Lake Plain area which is the postglacial “Lake Dakota” and the larger portion of the project, and the Missouri Slope Area which is part of the Great Plains province lying east of the Missouri River. A large percentage of this project’s …

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A Study Of Resource Allocation On Farms Engaged In Swine Production In Southeastern South Dakota, Robert Lincoln Borgers Jan 1968

A Study Of Resource Allocation On Farms Engaged In Swine Production In Southeastern South Dakota, Robert Lincoln Borgers

Electronic Theses and Dissertations

This study was undertaken to compare alternative livestock programs on southeastern South Dakota farms. Variations in hog production have been emphasized since swine feeding accounts for much of the income generated within the community. In addition to the amount of income, stability of income, risk, capital and labor requirements have been compared as limiting factors to be seriously considered. Diminishing numbers of farmers and new pork production methods have caused remaining farmers and new pork production methods have caused remaining farmers to reassess use of scarce inputs and new means of successful swine raising. Some questions which arise in the …

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The Fish Population Of Lake Poinsett, South Dakota, As Indicated By The Catch, James C. Congdon Jan 1968

The Fish Population Of Lake Poinsett, South Dakota, As Indicated By The Catch, James C. Congdon

Electronic Theses and Dissertations

Gill nets, trap nets, an otter trawl, and a boom-type electric shocker were utilized to obtain samples of the fish population of Lake Poinsett, South Dakota. The species and size composition of the samples differed significantly with time of season, time of day, location on the lake, and type of gear. Decreased activity following spawning was the apparent cause of a midsummer decline in gill net and trap net catches of black bullhead, black crappie, and white crappie. A late summer increase in the catch of yearling black bullheads, crappies, white bass, carp and bigmouth buffalo was attributed to an …

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A Historical Analysis And Comparative Classification Of The Use Of Computers In The Typographic Industry, Harvey R. Levenson Jan 1968

A Historical Analysis And Comparative Classification Of The Use Of Computers In The Typographic Industry, Harvey R. Levenson

Electronic Theses and Dissertations

Although developments of the past several decades confirm a revolutionary expansion of graphic arts technology, the printing industry has traditionally been known for its lack of technological progress. It is frequently stated that printing techniques, until recently, were considered to be approximately 50 years behind other industries with regard to technological advancement. Such conditions were particularly true in the area of typesetting. To witness the unprogressive implements being used, all one had to do was visit a typica1 composing room entangled with the awkward mechanisms of conventional Linotypes, Intertypes, and other similar typesetting devices. Such composing systems are steadily becoming …

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Relationship Of Dissolved Oxygen Concentration With Flow, Temperature And Bod For The Big Sioux River Downstream From Sioux Falls, South Dakota, Daniel Joseph Naughton Jan 1968

Relationship Of Dissolved Oxygen Concentration With Flow, Temperature And Bod For The Big Sioux River Downstream From Sioux Falls, South Dakota, Daniel Joseph Naughton

Electronic Theses and Dissertations

The first phase of the study sought to determine if the past quality of the Big Sioux River in that reach would have been sufficient to meet the adopted standards. The resulting paper (2) by John M. Herreid compared data for the quality parameters available at the Brandon, South Dakota sampling station with the recommended limits for various stream beneficial uses as set forth in the South Dakota Water Quality Standards. The appraisal by Herreid was completed before the addendum was attached to the standards. The major change of consequence in the addendum was essentially that of raising the minim …

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Viscoelastic Flow Past A Wedge With A Soluble Coating, Franklyn W. Roitsch Jan 1968

Viscoelastic Flow Past A Wedge With A Soluble Coating, Franklyn W. Roitsch

Electronic Theses and Dissertations

Due to the apparent suppression of turbulent energy dissipation, viscoelastic materials make excellent drag reducing agents. The applications of viscoelastic fluids in this role have been multiplying rapidly since they can be used as drag reducing agents for the transporting and processing of most fluid substances without any ill effects. In the future it may even be possible to reduce the drag on a ship's hull or on a submarine by injecting a water soluble polymer into the boundary layer on the body. Since many of the phenomena exhibited by viscoelastic fluids, such as the swelling of a jet as …

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A Comparison Of South Dakota State University's Radio Tape Service With That Of Other Land-Grant Institutions In The United States, Neil Stueven Jan 1968

A Comparison Of South Dakota State University's Radio Tape Service With That Of Other Land-Grant Institutions In The United States, Neil Stueven

Electronic Theses and Dissertations

Little is actually known about what radio services are provided to the public by individual land-grant institutions. A search of literature reveals that there is little concrete evidence of what these services consist and also the mechanics behind their production. The purpose of this study is to gather information on the use of radio at land-grant institutions in the United States, to assemble this information in manageable form, to compare South Dakota State University's tape service with those at similar institutions end to get new ideas for further improvement of South Dakota State University's tape service. The author hopes this …

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Social And Economic Factors Affecting Household Expenditures For Outdoor Recreation In Northeastern South Dakota, Albert Ward Van Ness Jan 1968

Social And Economic Factors Affecting Household Expenditures For Outdoor Recreation In Northeastern South Dakota, Albert Ward Van Ness

Electronic Theses and Dissertations

The measure and extent of outdoor recreation demand and associated household consumption expenditures can be estimated at the national, state, and local levels. This study is an attempt to measure the household expenditures f or outdoor recreation within an economically based trade area and to determine the relationship between these expenditures and the socio-economic characteristics of households. . . . The study characterizes the scope and nature of the family consumption expenditures for outdoor recreation. The project examines these demands in terms of the family budget in the selected area. Specifically the research in this study has the following objectives: …

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The New Vertical Starting Block And Its Effect On Sprint Starting Time, Lloyd Lawrence Kolker Jan 1968

The New Vertical Starting Block And Its Effect On Sprint Starting Time, Lloyd Lawrence Kolker

Electronic Theses and Dissertations

The purpose of this investigation was to compare the starting and performance times of sprinters using the vertical starting blocks with their starting and performance times using the conventional blocks. Thirteen volunteer members of the combined freshman and varsity track teams at South Dakota State University served as both the experimental and control groups. The subjects participated in a six week training program with both the vertical and the conventional blocks being utilized, during which time they met for twelve training sessions. The subjects were tested two and one-half weeks after the training program had begun and immediately following the …

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The Pollution Potential Of Feedlots Along The Main Stem Of The Big Sioux River, John Edward Foley Jan 1968

The Pollution Potential Of Feedlots Along The Main Stem Of The Big Sioux River, John Edward Foley

Electronic Theses and Dissertations

Modern technology is reshaping the world. Advances, accompanied by great changes, are being made in every facet of this nation's and the world's way of life. Every person, place, or object is affected to some degree by these technological advances. An area of endeavor receiving a great amount of benefit from twentieth-century science is agriculture. Farms in the United States have been lifted to levels of production and efficiency undreamed of not very long ago. But, as in the case of most technological advances, unraveling the old problems has brought about a new set of problems which are perhaps even …

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Stabilization Pond Site Evaluation, Terrence Owen Hausken Jan 1968

Stabilization Pond Site Evaluation, Terrence Owen Hausken

Electronic Theses and Dissertations

With the increasing number of stabilization ponds, it becomes desirable that they be located where they will least affect the present and future uses of water, cause the least amount of nuisances, and be economical with respect to location and construction. These desirable characteristics cannot always be fulfilled and thus a compromise must be made when choosing the site of the pond. At present there is no conventional method for evaluating various site characteristics and construction practices of areas or sites where wastes are released to the ground. Studies have been conducted on various phases or areas relating to stabilization …

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An Investigation Of The Employment Of Multiple Objectives In Water Resources Planning, Robert Rehm Werner Jan 1968

An Investigation Of The Employment Of Multiple Objectives In Water Resources Planning, Robert Rehm Werner

Electronic Theses and Dissertations

A number of objectives in water resources development have been identified historically, but planning practice has adhered most closely to economic efficiency. A question of growing concern is whether or not the conscious inclusion of multiple objectives simultaneously in water resources planning can result in the formulation of plans closer to an optimum in the satisfaction of peoples’ total desires than does a plan which optimizes the objective of economic efficiency or other single objective. The purpose of this study was to determine if the explicit employment of multiple objectives in water resources planning represents a strengthening of capability to …

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Potential Surface Water Storage Capacities Of Various Contoured Geometric Shapes, Coy W. Doty Jan 1968

Potential Surface Water Storage Capacities Of Various Contoured Geometric Shapes, Coy W. Doty

Electronic Theses and Dissertations

Since the beginning of time man has been concerned with floods and surface runoff. Several floods are recorded in the Bible, including one flood so large that it would have destroyed the world if special provisions had not been made. Runoff can affect man's food, clothing, and shelter and can even take his life. The storage of water on the field in order to prevent runoff has been practiced for many years. The concept of storing water where it falls is not new. Contouring practices store some water in place. Gradient terraces also provide a limited amount of storage of …

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Proposed Modifications To The Los Angeles Rattler Test, Reinhold P. Mathiowetz Jan 1968

Proposed Modifications To The Los Angeles Rattler Test, Reinhold P. Mathiowetz

Electronic Theses and Dissertations

The amount of highway construction is increasing every year. As a result, there is an ever increasing demand for mineral aggregates. Engineers classify these mineral aggregates as the smaller rocks which are composed of one or more minerals. In the state of California, between one-fifth and one-third of the 300 million dollars spent annually for the construction of highways is used for the procurement and placement of aggregates. (l) This cost is steadily increasing because of the depletion of the more accessible and higher quality aggregates. Because the traffic volume and loads are steadily increasing, the Interstate system as well …

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On The Reduction Of A Matrix To A Canonical Form / By Howell Wayne Todd, Howell Wayne Todd Jan 1968

On The Reduction Of A Matrix To A Canonical Form / By Howell Wayne Todd, Howell Wayne Todd

Electronic Theses and Dissertations

No abstract provided.

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