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Optimum Concrete Design With Random Variable Selection, Ima F. Goldman
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 …
Optimal Organizations For Southeastern South Dakota Livestock Farms: Land Acquisition And Minimum Resource Models, Everett Dean Du Bois
Optimal Organizations For Southeastern South Dakota Livestock Farms: Land Acquisition And Minimum Resource Models, Everett Dean Du Bois
Electronic Theses and Dissertations
Today’s farm, operators have an ever increasing number and variety of resourced under their control. With this increase in resource use, farm operators need guidelines to use in planning resource use and the possible expansion of their farm enterprises. Farm operators can use the resources under their control in various ways, but for each set of price relationships a certain resource combination provides maximum net income. Knowledge of alternative enterprise organizations for various farm situations, at different price levels, is useful in providing guidelines to farmers for organizing their farms. Livestock farmers of Southeastern South Dakota who wish to increase …
Preliminary Investigation Of A New Frequency Modulator, David A. Cleveland
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 …
Optimization Of Cover Plated Steel Frames By Linear Programming, Chong Soo Cho
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 …
Genetic Localization Of Chlorophyll Mutant Genes In Barley, Sheria Chaio Chaio-Tong Chang
Genetic Localization Of Chlorophyll Mutant Genes In Barley, Sheria Chaio Chaio-Tong Chang
Electronic Theses and Dissertations
Chlorophyll deficient mutants have been useful in studying the actions of genes determining the submicroscopic structure of the chloroplast and in analyzing the genetic control of the formation of macromolecular cell structures. Normal chlorophyll development is probably controlled by a large number of genetic factors, most of which are inherited as recessives when mutated. Each of the chlorophyll deficiency phenotypic groups seems to be determined by many genes. The chlorophyll mutations were produced. They could be divided into nine different types (Gustafsson, 1940), according to their appearance at certain stages of development of the plants: albino, xantha, albovridis (alboxantha, xanthalba, …
A Gravel Envelope For A Tile Drain In A Coarse Silt Base Material, Dale A. Bucks
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 …
Effects Of Dieldrin On Reproduction Of Penned Hen Pheasants In The Second Generation, William Lyman Baxter
Effects Of Dieldrin On Reproduction Of Penned Hen Pheasants In The Second Generation, William Lyman Baxter
Electronic Theses and Dissertations
Effects of dieldrin on penned hen pheasants (Phasianus colchicus) which were the offspring of hens receiving encapsulated dieldrin the previous year were measured. Hens produced by the previous year's control group received 0, 6, 8, or 12 mg of dieldrin per week for 14 weeks. Hens from treated groups received 0 or 6 mg per week. Effects of dieldrin were evaluated by influences upon reproductive success. Mortality occurred in all groups receiving dieldrin, and appeared to be correlated with a reduction in egg production. Dieldrin lowered egg production by reducing food consumption in the 12 mg group and two groups …
The Fish Population Of Lake Poinsett, South Dakota, As Indicated By The Catch, James C. Congdon
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 …
Snapping Turtle Life History On Lacreek Refuge, South Dakota, Donald Arthur Hammer
Snapping Turtle Life History On Lacreek Refuge, South Dakota, Donald Arthur Hammer
Electronic Theses and Dissertations
Investigations of the snapping turtle population on Lacreek National Wildlife Refuge in south-central South Dakota were conducted during 1965-67. Turtles captured by trapping, “hooking”, boxing nests and catching nesting females were measured, marked and released. Turtles were marked by toe-clipping, routing, flagging, and tagging. Attaching a metal tag with a “pop-rivet gun” was the most successful marking technique. Molluscs (95 percent frequency) and vegetation (91 percent frequency) were the most important food items of 22 turtles captured on Valentine Refuge in north-central Nebraska. Bird remains were found in 23 percent of the stomachs. Recapture of marked turtles indicated that individual …
Evaluations Of Techniques For Estimating Fall Age Ratios Of Canada And Snow Geese, Kenneth Frederick Higgins
Evaluations Of Techniques For Estimating Fall Age Ratios Of Canada And Snow Geese, Kenneth Frederick Higgins
Electronic Theses and Dissertations
Validity of flock counts, average group-size counts, cannot-net catches, and hunter-bag checks for estimating productivity of lesser snow geese (Anser caerulescens caerulescens) and small Canada geese (Branta cnadensis hutchinsii-parvipes complex) was studied at Sand Lake and Tewaukon National Wildlife Refuges during fall, 1965 and 1966. Age-ratios obtained from flock counts vaired with the number of flocks sampled, wind velocity and amount of sky cover. If adequate sampling sites are selected and weather conditions are standardized, age ratio data from flock counts are of value for assessing productivity. Variation in group composition and number contributed to the bias in average group-size …
Life History And Ecology Of The Black-Footed Ferret In The Wild, Conrad N. Hillman
Life History And Ecology Of The Black-Footed Ferret In The Wild, Conrad N. Hillman
Electronic Theses and Dissertations
Twenty-one black-footed ferrets (Mustela nigripes) were observed at six different locations in southwest South Dakota between April 1966, and September 1967. All observations were made on black-tailed prairie-dog (Cynomys ludovicianus) towns from 15 to 100 acres in size. Because of the proximity of towns inhabited by ferrets, it was possible that individual animals were observed in more than one location. Three litters of ferrets were studied. Young ferrets were most active during early morning and late evening hours. Ferrets remained as a group until early fall when dispersal evidently occurred. Young ferrets accepted live-tethered and dead prairie dogs, mice, cottontails …
Food Habits And Energy Utilization Of Badgers, Grant K. Jense
Food Habits And Energy Utilization Of Badgers, Grant K. Jense
Electronic Theses and Dissertations
A study was initiated in 1966 to determine food habits and energy utilization of badgers. Digestive tracts were collected in eastern South Dakota from November 1966 to November 1967. A male and a female badger were used for two energy-balance and three digestion trials. Ground squirrels, mice and rabbits were found to be the most important mammal foods eaten. Birds and eggs were only eaten during spring and summer. Toads and grains were important fall foods. Insects were eaten throughout the year but usually only in trace amounts. However, when available, badgers ate large quantities of beetles and ground-nesting bees. …
A Survey Of Pollution On Selected Streams In The Black Hills Of South Dakota, Thomas J. Jurgens
A Survey Of Pollution On Selected Streams In The Black Hills Of South Dakota, Thomas J. Jurgens
Electronic Theses and Dissertations
Seven Streams in the Black Hill of South Dakota were surveyed to determine the influence of suspected sources of pollution on these streams. The sources of pollution included both sewage treatment plant effluents and mining wastes. A comparison of the benthic fauna community below a pollution source to that above it was the primary basis for evaluating the effect of the pollution source on the stream. The results of the benthic fauna samples indicated that the streams surveyed were being polluted. The degree of pollution of each stream was also indicated by these results. Chemical analysis were sued to verify …
Limnology Of Selected South Dakota Lakes, Artwin E. Schmidt
Limnology Of Selected South Dakota Lakes, Artwin E. Schmidt
Electronic Theses and Dissertations
Physical, chemical, and biological aspects of 45 lakes in South Dakota were studied from July 1965 to July 1967. Maximum water temperature at the surface reached 28 C. Most of the lakes studied exhibited continuous circulation except when ice covered. Thermocline formation was observed in six of the lakes. Light transmission was influenced by turbidity, and varied greatly within individual lakes and among lakes. Dissolved oxygen concentrations ranged from near saturation to less than the recommended minimum for fish life. All likes studied were basic ranging from a pH of 7.1 to 11.3. Specific conductance of lakes occupying open basins …
Fishes Of The Big Sioux River, James A. Sinning
Fishes Of The Big Sioux River, James A. Sinning
Electronic Theses and Dissertations
An understanding of the fishes and limnology of a river is essential to the effective management of the river. The climate, soils, and agricultural practices in eastern South Dakota create unusual characteristics in rivers draining that area. One of the principal rivers of the area is the Big Sioux River. Fishes of this river were first studied about 1900 by Meek and by Everman and Cox (Bailey and Allum, 1962). A later survey by Churchill and Over (1933) apparently included the Big Sioux River, but collection data were inadequate for detailed comparisons. Since that time collections of fishes were made …
A Historical Analysis And Comparative Classification Of The Use Of Computers In The Typographic Industry, Harvey R. Levenson
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 …
Viscoelastic Flow Past A Wedge With A Soluble Coating, Franklyn W. Roitsch
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 …
Ecological Relationships Of Breeding Blue-Winged Teal To Prairie Potholes, Roderick C. Drewien
Ecological Relationships Of Breeding Blue-Winged Teal To Prairie Potholes, Roderick C. Drewien
Electronic Theses and Dissertations
Ecology and behavior of breeding blue-winged teal (Anas discors) were studied in northeastern Day County, South Dakota in 1965 and 1966. Breeding pair use of the wetland habitat and importance of Type 1 ponds in the wetland complex were evaluated. Pair densities of 30.7 and 33.0 per square mile in 1965 and 1966, respectively, were above the 16-year average from 1950-66 and near maximum. Blue-winged teal comprised 46.7 percent of the waterfowl breeding population in 1965 and 51.7 percent in 1966. Number of water areas per square mile through mid-spring 1965 was comparable to the average for the 16-year period …
Optimum Plans For A 1600 Acre Ranch On Williams-Tetonka-Cavour Soil Association In Central South Dakota Including An Analysis Of Pasture Improvement Work Done By Ranchers, Herbert R. Allen
Electronic Theses and Dissertations
A profit maximizing linear programming model was used to arrive at optimum plans for a typical ranch in the Willimas-Tetonka-Cavour soil association are of central South Dakota. The typical ranch used for the analysis had 500 acres of cropland and 1056 acres of native grass. Low, medium and high levels of efficiency were assumed in grain crop and livestock production. Forage production was obtained from different management systems on tame grasses and native grasses. Tame grasses included brome-alfalfa, crested wheatgrass, Russian wild rye, and sudan grass. Native grass production was obtained from alternative management systems including renovated pasture, fertilized pasture, …
On The Reduction Of A Matrix To A Canonical Form / By Howell Wayne Todd, Howell Wayne Todd
On The Reduction Of A Matrix To A Canonical Form / By Howell Wayne Todd, Howell Wayne Todd
Electronic Theses and Dissertations
No abstract provided.
An Analysis Of Stephen Leacock's Treatment Of The Detective Story, Beverly Lamb
An Analysis Of Stephen Leacock's Treatment Of The Detective Story, Beverly Lamb
Electronic Theses and Dissertations
On any list of Canadian writers, Stephen Leacock's name would have to appear at the top because of his achievements in humor. He has won for himself a unique place in the Canadian scene as economist, historian, critic, essayist, lecturer, and teacher, but above all, as a writer and speaker who is the incarnation of humor. Born in the south of England, at Swanmoor in Hampshire on December 30, 1869, he moved, in 1876, with his family to Canada. For some time he had a tutor for his schooling but when his father left the family, Stephen was sent to …
A History Of The University Of Mississippi Radio Station Wcbh, Mary Wilhoit Harbour
A History Of The University Of Mississippi Radio Station Wcbh, Mary Wilhoit Harbour
Electronic Theses and Dissertations
No abstract provided.
Science Fiction In Modern Theatre, Carolyn Byrd Combs
Science Fiction In Modern Theatre, Carolyn Byrd Combs
Electronic Theses and Dissertations
No abstract provided.
The Use Of The Sea In Some Of Byron's Poems, Yurio Nishimura
The Use Of The Sea In Some Of Byron's Poems, Yurio Nishimura
Electronic Theses and Dissertations
No abstract provided.
Radiant Distribution And Transmission Characteristics For Specular Conical Configuration, Harish Peshorilal Bhasin
Radiant Distribution And Transmission Characteristics For Specular Conical Configuration, Harish Peshorilal Bhasin
Electronic Theses and Dissertations
No abstract provided.
The Attitudes Of Fifth Century Greece Toward Women In Society As Reflected In Three Plays By Euripides : The Electra, The Hippolytus, And The Medea / By Theodore O'Bryant Solomon, Jr, Theodore O'Bryant Solomon Jr
The Attitudes Of Fifth Century Greece Toward Women In Society As Reflected In Three Plays By Euripides : The Electra, The Hippolytus, And The Medea / By Theodore O'Bryant Solomon, Jr, Theodore O'Bryant Solomon Jr
Electronic Theses and Dissertations
No abstract provided.
The Determination Of The Saturation Point And The Crystallization End Point For The Four-Component System Nalmgcl H At 50 And 10 / By Ching-Yang Tu, Ching-Yang Tu
Electronic Theses and Dissertations
No abstract provided.
The Numerical Solution Of Laminar Boundary Layer Equations And Its Applications Including The Study Of Convective Heat Transferin A Partially Ionized Boundary Layer / By G. Venkataramu, G Venkataramu
Electronic Theses and Dissertations
No abstract provided.
Study Of Turbulent Boundary Layer Development Over Smooth And Rough Surfaces / By Shyam Ramchand Suchdeo, Shyam Ramchand Suchdeo
Study Of Turbulent Boundary Layer Development Over Smooth And Rough Surfaces / By Shyam Ramchand Suchdeo, Shyam Ramchand Suchdeo
Electronic Theses and Dissertations
No abstract provided.
The Effects Of Sophistication Of Theories And Uncertainties Of Collision Integrals On The Calculation Of Transport Properties Ofa Partially Ionized Diatomic Gas - Nitrogen, Noah Neng Kou
Electronic Theses and Dissertations
No abstract provided.