Digital Commons Network^™

Movements And Habitat Use By Hen Pheasants During Brood Rearing, Lynn E. Hanson

Electronic Theses and Dissertations

Land-use patterns characteristic of prime pheasant range in the Great Plains and prairie region have 50-75 percent of the land under cultivation according to Kimball et. al. (1956). Farmland is pheasant habitat, and the production of pheasants is therefore greatly influenced by farming practices. Considerable research has been done on rates of pheasant production, nest success, and cover preferences for nesting. However, little information has been obtained on movements and cover preferences for brood rearing. Most studies of the type of cover utilized by pheasant broods have been based on roadside and random field observations. Kozicky and Hendrickson (1951) carried …

Interpretive Potential Of South Dakota Wetlands, Douglas C. Harr

Electronic Theses and Dissertations

A study was initiated to devise a method for selecting prairie wetlands on which nature interpretation areas could be established. An evaluation form was designed to systematically identify areas of good potential and 64 prairie wetlands were evaluated. Twenty-two percent of the evaluated marshes were found to rank “excellent”: the method of evaluation was determined successful. A survey was initiated to determine visitor preferences for interpretive methods and facilities at an existing wildlife-interpretive trail. Seventy-nine percent of the visitors indicated preference for a self-guiding interpretive trail. Maps and pictures used in conjunction with self-guiding signs were deemed important. Ninety-one percent …

Effects Of Selected Music Environments On Performance Of An Endurance Event, Carol Evonne Mccormick

Electronic Theses and Dissertations

The present study was conducted to objectively investigate the effects of music upon human performance during an endurance event. If a regulation of human performance can be established, music could be an invaluable aid for use during physical activity. The purpose of this study was to determine the effects of different types of music upon performance of an endurance event. The following two hypotheses were investigated:

1. There is no significant difference among the five treatments on distance performance of an endurance event.

2. There is no significant difference among the five treatments on heart rate before and during an …

An Investigation Of The Effects Of Instantaneous Jockeying In Queues By Simulation, B. Radindranath

Electronic Theses and Dissertations

In today's world, waiting lines formed by people, machines and other types of units are commonplace. Queues form whenever the current demand for a service exceeds the current capacity to provide that service. In many cases, the interarrival times or service times are not constants, but involve distributions from which the values occur randomly.

A waiting line causes concern when there is an economic value associated with it. A waiting line may have a negative monetary value if units leave without service, or if units have costs as they wait. Idle service facilities may also have a negative monetary value …

The History Of Intercollegiate Athletics At Northwestern College, Richard Wayne Vander Berg

Electronic Theses and Dissertations

Historical studies in athletics typically present which confronted coaches and athletic directors in the past. Such studies could be of importance in planning future programs of athletics. “The problem facing education today is the result of a long historical evolution. A vision of the future depends on the understanding and intelligent interpretation of the past.” The data collected and presented in this study should be of interest and value to individuals in the Health, Physical Education and Recreation Department, to Alumni, and to all people interested in the intercollegiate athletic program at Northwestern College, Orange City, Iowa. Members of the …

The Relationship Of Forward Pass Catching Ability In Football And Selected Anatomical Measurements And Motor Responses, Marlin Peter Vis

Electronic Theses and Dissertations

American football has undergone many significant changes since its first recorded game between Rutgers and Princeton in 1869. Once change has been the growth in the importance of the forward pass to the offense. Rockne cites the year 1912 as a turning point of the growth in popularity of football. It was during this year that the Rules Committee removed many of the restrictions against the forward pass and made more definite the penalties against interfering with the receiver. Rockne states that this increase in the popularity of football is due “entirely to the open game, to the increase of …

The Influence Of Various Stress Conditions On Cholinesterase Levels Of Cattle Treated With An Organophosphorus Insecticide, Mitchell J. Wrich

Electronic Theses and Dissertations

Six-to 8-months-old Hereford heifers categorized as grubby or grub-free calves were used for this research. Forty calves were purchased in 1968 and also in 1969. The grubby calves were obtained from Highmore, South Dakota, an area where calves have a history of heavy grub infestations of both Hypoderma bovis (L.) and Hypoderma lineatum (de Villers). The grub-free calves were purchased in Fargo, North Dakota. Calves raised in this area seldom are infested with cattle grubs. Specified groups of calves were subjected to 30 minutes of continuous exercise or the withholding of feed and water for 24 hours prior to treatment …

An Evaluation Of An Aerated Lagoon System Treating Combined Dairy And Domestic Wastes During Summer Operation, Douglas M. Skie

Electronic Theses and Dissertations

The Water Quality Act of 1965 and the adoption of the subsequent state water quality standards emphasized the general public's concern for the control of water pollution; for it has become the goal of our nation to maintain all American waters in a suitable condition for domestic and industrial supply, for recreation and for other beneficial uses. It is for these reasons that many communities have been faced with the problem of constructing new sewage treatment facilities or expanding present operations. The use of stabilization ponds as a means of providing sewage treatment has been the practice of many small …

A Study Of Silver Recovery Processes And Comparative Classification Of Silver Recovery Equipment For The Graphic Arts Industry, Kenneth K. Bittner

Electronic Theses and Dissertations

The first objective of this investigation is to alert the graphic arts industry to important problems now facing those who use photographic materials, and to show the importance of silver recovery as an effective means of solving these current problems. Another objective of this study is to explain the several silver recovery processes so that the potential buyer of silver recovery equipment may understand exactly how each process works. This area of study would also explain where silver is to be found; how a firm can estimate its potential savings from silver recovery, and how a firm can determine the …

Plant Analysis Of Spring Small Grains At Different Stages Of Growth, James Henry Pfeifer

Electronic Theses and Dissertations

Plant analysis has developed into a diagnostic tool for measuring the nutrient status of crops. Plant analysis promises to greatly supplement the methods now available for estimating nutrient sufficiency, and as a result, increase the yield of crops. For small grains, the sampling time recommended for plant analysis is the reproductive stage ·of growth. This period has been used to determine nutrient concentrations of N, P, K, Ca, Mg, S, Zn, Mn, and Fe. Much concern exists with regards to the accuracy of plant analysis in predicting the nutrient status of small grain plants. Concern spring wheat, and barley under …

S. I. Hayakawa's Expressed Positions Regarding Campus Government And Control From November 26, 1968 To March 20, 1969, Richard E. Pletcher

Electronic Theses and Dissertations

Since the role of many college administrators has been challenged in the past by segments of the college community, it may be valuable to look at possible effects of this challenge. In any college, one of the main figures of established authority is the college president. The purpose of this study has been to ascertain to what extent the position of the chosen administrator regarding campus government and control, as revealed in his public statements, has been altered over the period of time from November 26, 1968, to March 20, 1969. For purposes of this study campus government and control …

Sinusoidal Ecl Gate Oscillators, Richard W. Sawrey

Electronic Theses and Dissertations

The frequency range of solid state oscillators has increased to the point where classical low frequency design and analysis techniques are no longer completely adequate. Development of very high frequency emitter coupled logic (ECL) gates has provided a new active device that may be used in high frequency oscillators. In light of these facts the objective of this study is to develop an analysis of high frequency ECL gate oscillators. This analysis will be based on the s-parameters of the gate and those of the feedback network. The relationship between the s-parameter description of an oscillator and negative resistance oscillators …

The Relationship Of Porcine Muscle Fiber Size And Number To Management, Meatiness And Quality, Ronald J. Smith

Electronic Theses and Dissertations

For many years animal scientists have been striving to find the “foolproof” method foreseeing the desired carcass and consumer characteristics in live animals before they are slaughtered. As a result, several different live animal and carcass evaluation techniques have been developed and tested with slow but encouraging success in some areas. This “never-ending” search has been stimulated by the development of new and more sophisticated research tools and facilities as time advances. Increasing consumer demands for a muscular, trim, high quality meat product makes identification of these desired traits in the live animal and carcass necessary. Thus, the producer, feeder …

Characteristics Of Irregularly Shaped Compaction Curves Of Soils, Richard John Suedkamp

Electronic Theses and Dissertations

Considering these basic facts an investigation was carried out at South Dakota State University, sponsored by the National Science Foundation, to examine the existence of double-peak and irregularly shaped moisture-density compaction curves. The objective of the experiment was two-fold: 1. To establish the existence of irregularly shaped compaction curves and 2. To examine the characteristics of soils which produce irregularly shaped compaction curves from a macroscopic and also microscopic level. The results of this study should confirm the existence of irregularly shaped compaction curves and also provide information on whether a correlation of the compaction curve shapes and the index …

Metabolism Of Urea Nitrogen By Rumen Ciliate Protozoa, Alan Lewis Vogel

Electronic Theses and Dissertations

The objective of this research was to study the utilization of urea by mixed populations of rumen protozoa in vitro in the absence of bacteria. Initial experiments were conducted to determine the validity of chemical determinations used by other researchers in quantitating the nitrogen fractions in the medium following incubation. An experiment was conducted to determine the utilization of urea by rumen bacteria and this served as the basis for evaluating utilization of urea by protozoa. Culture techniques were developed to grow and maintain protozoa under in vitro conditions. Three experiments were conducted in which various nitrogen fractions of fermentation …

Synthesis And Pyrolysis Of Dichlorocyclopropanol Lactones, Avon J. Whitehead

Electronic Theses and Dissertations

The affluent countries of the world have been concerned for generations about the eradication of economic pests. In their continuing search for ways to increase the percentage of harvestable crops, to reduce structural damage done to their shelters and places of business, and to limit disease they have relied in the past on the extensive use of pesticides. Insects are one of man’s primary ecological competitors and the weapons that he uses against them, if not chosen wisely, may contribute more to the destruction of his paradise than his weapons of war. It is now common knowledge that the indiscriminate …

The Chemistry Of Some Unusual Carbodiimides, Donald Melvin Plautz

Electronic Theses and Dissertations

Several N¹-alkyl-N²-(N,N-dialkylamino)carbodiimides, which were found to form dimeric species, were prepared, and the structure of the dimeric species determined. A study of the reaction chemistry of both the monomeric and dimeric carbodiimides led to the conclusion that dimerization occurred via a (π2s + π2a) ground-state, symmetry-allowed mechanism, and that thermal decomposition of the dimeric species occurred via a (π2s +-π2s) excited-state, symmetry-allowed mechanism. Although dialkylphosphoramidates have been shown to be useful intermediates in the preparation of unsaturated organic nitrogen compounds, N-acyl- and N-imino-dialkylphosphorohydrazidates were found to be too unstable, forming trialkylphosphates upon distillation, to be of …

Herbicide Residue And Weed Control In Switchgrass, Charles Nicholas Smith Jr.

Electronic Theses and Dissertations

Purposes of this study were to find an effective herbicide for control of grassy weeds in a pasture, to adapt known laboratory procedures for analyzing residues and to determine amounts of residues during the growing season in treated plots. Nine herbicides were screened for controlling grassy weeds, primarily downy brome (Bromus tectorum L.) in a native pasture. Data indicated 2-chloro-4-ethylamino-6-isopropylamino-s-triazine (atrazine) applied postemergence at 1 lb/A was the most effective at 85% control. The following year, atrazine, 2-chloro-4, 6-bis­ (ethylamino)-s-triazine (simazine) and 2, 2-dichloropropionic acid (dalapon) each at 1, 2 and 3 lb/A were applied preemergence to switchgrass pasture. Of …

Food Habits Of Black Crappies, White Crappies, Yellow Perch And White Suckers In A Small Impoundment In Northeastern South Dakota, Dennis Unkenholz

Electronic Theses and Dissertations

Crustaceans, aquatic insects and fish were the most important food items found in stomach samples. Black crappies depended on zooplankton and aquatic insects as their major food source as they occurred in all samples and were major food items in 70 percent and 40 percent respectively. Insects, zooplankton and fish were the major food items of white crappies. Insects were the dominant forage present in 54 percent of the samples while zooplankton and fish were dominant in 36 percent and 21 percent of the samples respectively. Perch relied on crayfish, fish and aquatic insects as their major food source. Aquatic …

A History Of Intercollegiate Baseball At South Dakota State University, Robert Tanios Bozied

Electronic Theses and Dissertations

Baseball, as a sport at South Dakota State University, has had a long and colorful history. From the day the first baseball game was played by the University team in 1885 to the present, South

Dakota State University has made a constant effort toward improving baseball through better staffing, selective scheduling, and a limited recruiting program. The present study describes how baseball grew and developed and also reports interesting highlights that occurred during the period of 1885-1970. The data collected in this study could be of interest and value to individuals in the Health, Physical Education, and Recreation Department, Athletic …

Field Testing Of Bridge Girder Webs Subjected To Horizontal Loads, Duane Darrrel Boice

Electronic Theses and Dissertations

In construction of plate girder bridges, when no ground supported falsework is used, metal brackets bolted to the web of the exterior girders are used to support construction loads. The loads include the weight of the falsework, the weight of the freshly poured concrete of the overhanging portion of the bridge deck, and the weight of the finishing machine. Figure 1 shows a cross section of the bridge with the bracket mounted on the exterior girder and formwork in place. The brackets transmit to the plate girder web a vertical shear force and a couple. The couple applied to the …

Changes In The Physical Condition Of College Football Players Throughout A Competitive Season, Thomas Arthur Ball

Electronic Theses and Dissertations

The purpose of this study was to determine the physical condition of football players as they reported to the pre-season fall training camp and the resulting effects a season of competitive football had on selected measures of physical condition. Measurements taken to determine this condition were cardiovascular endurance, muscular endurance, muscular strength, agility, explosive power, weight and body fat.

Pore Pressure Influences On Irregular Compaction, Steven Keith Cutler

Electronic Theses and Dissertations

At the present time Olson's hypothesis appears logical. If the hypothesis is correct, the results of this research should provide experimental verification of his proposal. Consequently, using the presented facts as an outline, research was carried out at South Dakota State University, sponsored by the National Science Foundation, to carefully examine irregularly shaped compaction curves. The objective of the investigation was three-fold: (1) to examine the influence of negative pore pressure on the irregularly shaped compaction curve by pore pressure measurements; and (2) to correlate pore pressure measurements with experiments using a surface tension reducing agent together with water; and …

The Physiological Effects Of A Season Of Varsity Swimming Competition And Training On Selected Bodily Responses Of Swimmers, William George Cook

Electronic Theses and Dissertations

The purpose of this investigation was to study the physiological-effects of a season of varsity swimming competition and training on selected bodily responses of swimmers. The following hypothesis was investigated: Throughout the competitive swimming and training season, there is no significant trend that can be observed in the selected bodily responses of the varsity swimmers. 1. The eight male subjects for this study were chosen from members of the South Dakota State University varsity swimming team on the basis of individual participation during the previous season and on predicted participation in varsity competition. 2. Only these physiological parameters were measured: …

A Characterization Of Four Prairie Grasses, Carolyn A. Cogswell

Electronic Theses and Dissertations

Even though native range forages have been available a long time, there is little research data concerning the specific grasses characterized as native forage or browse. Little research has been done to study these forages because of their natural habitat far from research laboratories, the task of collecting enough forage for adequate sample testing, and sparse yet hardy existence and questionable known vegetative growth with each year's different climate and environmental conditions. Certainly it seems logical that at some future time the knowledge of their nutritive value will become important. Perhaps then with adequate management the rancher can improve upon …

A Rhetorical Analysis Of Selected Speeches Of Senator Birch E. Bayh On The Twenty-Fifth Amendment To The Constitution Of The United States, Michael Lee Brubaker

Electronic Theses and Dissertations

Several times in the past, the American public has faced the possibility of having no President because of his illness or death in office. The question arising from this situation is significant not only to citizens of this country but to the citizens of the world community as well. For this reason the writer was prompted to initiate an analysis of the speeches of Senator Birch Bayh of Indiana in his support of the Twenty-fifth Amendment to the Constitution of the United States of America. The analysis of the speeches of a prominent person in our society carries a potential …

A Comprehensive Analysis Of The Rural Labor Force In East-Central South Dakota, William John Folkerts

Electronic Theses and Dissertations

This study will address itself to the general objective of defining in economic terms the rural labor force in a particular area of South Dakota. Two specific objectives are:

1. To identify and analyze the quantity and quality characteristics of a rural labor force.

2. To measure the rural labor force against quantity and quality characteristics so that the potential as well as the currently available labor is identified.

The geographical basis for the study was the service area of the Sioux Valley Empire Electric Association, a Rural Electric Association cooperative. This cooperative serves all or part of five counties …

Pasture Supplementation Of Beef Cattle Followed By Drylot Finishing With High-Concentrate Rations And Antibiotic Supplement, Cecil R. Graber

Electronic Theses and Dissertations

The objectives of the research reported in this thesis were to determine the effects of various levels of pasture grain feeding on pasture weight gains as well as on subsequent gains and feed requirements in drylot. The value of an antibiotic was tested at various levels to determine the effects in rapidly getting cattle on full feed of a high-concentrate ration. The effects of the various levels of the antibiotic were also studied when administered for five consecutive days at monthly intervals throughout the experiment.

Nonlinear System Identification Using An Analog Technique, G. N. Govindan

Electronic Theses and Dissertations

The prime purpose of this thesis project is to investigate and to implement Kohr's method. Kohr's method of identification was selected for study mainly because of the easy accessibility of the analog computer, in addition to the other advantages mentioned above. In this thesis the method of Kohr is shown to apply to the identification of single-valued nonlinearities. However, it is also shown in the work to follow that the method does not apply, in general, to double-valued nonlinearities. Further, an extension of this method is developed herein which enables the determination of system order. A number of examples illustrating …

Effects Of Delactosed Whey, Skim Milk, And Sugar On Ration Palatability And Performance Of Early Weaned Pigs, Larry A. Hauser

Electronic Theses and Dissertations

There has been much interest in the possibility and feasibility of weaning pigs at an early age with attempts to wean pigs as early as one to two hours post-partum. Most workers, however, have concentrated their studies upon weaning at two to four weeks of age. When pigs are weaned at this early age, it is important to utilize feedstuffs that will result in an economical, highly palatable, starter diet that will provide rapid and efficient pig gains. Therefore, the diet must provide all of the essential nutrients in a readily available form and at a cost which is not …