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A Demographic Evaluation Of The Certification Qualifications Of Secondary Science Teachers With Implications For School Administrators, Joan S. Bowen Dec 1988

A Demographic Evaluation Of The Certification Qualifications Of Secondary Science Teachers With Implications For School Administrators, Joan S. Bowen

Electronic Theses and Dissertations

This population study of the certification qualifications of the secondary science teachers of the Upper East Tennessee region in 1984-85 was conducted to determine if there was a qualification shortage in any science-teaching area at the beginning of the Comprehensive Education Reform Act (CERA). Data were obtained from the Tennessee State Department of Education Preliminary Report Forms for Staff. Subject certification data and 1984-85 teaching assignment were analyzed to find percentages of infield, out-of-field teaching and the size of the internal pool of active certificated science teachers who were not teaching. Results of these analyses were presented for each system …

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Divergent Soliloquy : The Unfolding Of Content, James L. Weems Aug 1988

Divergent Soliloquy : The Unfolding Of Content, James L. Weems

Electronic Theses and Dissertations

No abstract provided.

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The Effect Of Grass Carp Introduction On Aquatic Vegetation And Existing Fish Populations In Two Small Prairie Lakes, David L. Bauer Jan 1988

The Effect Of Grass Carp Introduction On Aquatic Vegetation And Existing Fish Populations In Two Small Prairie Lakes, David L. Bauer

Electronic Theses and Dissertations

Within two years after triploid grass carp introduction in 2.3 hectare Prior Lake in South Dakota, aquatic vegetation coverage and height in the water column were significantly lower (P<0.005). During the same two year period, triploid grass carp did not significantly reduce aquatic vegetation coverage or height in the water column in 11.4 hectare East Lake Eureka, also in South Dakota. Stocking densities were 49 fish/hectare and 61 fish/hectare (229 mm mean total length) in Prior Lake and East Lake Eureka, respectively. The biomass of prey fish in East Lake Eureka in 1986 was quite high with 88.3, 85.3 and 17.3 kg/hectare for black bullhead (Ictalurus melas), yellow perch (Perea flavescens), and bluegill (Lepomis macrochirus), respectively. The biomass of northern pike (Esox lucius) was also high at 13.8 kg/hectare. A Proportional Stock Density (PSD) of 11 and Relative Weight (WK) of 117 indicated a relatively healthy bluegill population in East Lake Eureka. However, the PSD value for black bullheads was lower (8) while their condition was relatively good (K=l.58). The yellow perch population appeared to be over-populated in East Lake Eureka with a PSD of only 5 and a relatively low condition factor (K=l.14). The northern pike population in East Lake Eureka had a PSD value of 53, but a slightly low Wr of 94. Available prey/predator ratio indicated that there was an excess of prey fish for most size classes of predators. Because no significant vegetation reduction occurred in East Lake Eureka, no changes in existing fish populations could be attributed to grass carp introduction or aquatic vegetation reduction. Data gathered on existing fish populations in East Lake Eureka will serve as a pre-treatment data set to be compared to future conditions if aquatic vegetation is reduced. Fish sampling in Prior Lake was greatly reduced due to a winterkill which occurred in the late winter of 1986. Bluegill and largemouth bass (Micropterus salmoides) were the most abundant fish species found in Prior Lake in 1987. Bluegill appeared to be overpopulated as their PSD value was 1; a high Wr of 109 may have indicated improved conditions immediately following the winterkill. Results for the largemouth bass in Prior Lake were similar with a low PSD (7) and a high w~ (112). Winterkill (Prior Lake) and lack of aquatic vegetation control by grass carp (East Lake Eureka) prohibited making conclusions about the effect of grass carp introduction on the existing fish populations in the two lakes. Further research needs to be conducted in South Dakota to determine appropriate grass carp stocking rates for South Dakota waters, and to evaluate what effect grass carp introduction and aquatic vegetation reduction has on existing fish populations.

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Electrophoretic, Morphometric, And Meristic Comparisons Of Walleye Broodstock In South Dakota, Chantel M. Waltner Jan 1988

Electrophoretic, Morphometric, And Meristic Comparisons Of Walleye Broodstock In South Dakota, Chantel M. Waltner

Electronic Theses and Dissertations

Electrophoretic and morphological variability among walleyes collected from three upper Missouri River tributaries and a glacial lake in South Dakota was investigated, and an upper Mississippi River stock was electrophoretically compared to the South Dakota stocks. Allele frequencies of two (MDH-3, GMP-3) of the twenty-one loci examined differed significantly (P<0. 05) between South Dakota and Mississippi River walleyes. Contingency chi-square tests of allele frequencies showed homogeneity among walleyes from the Missouri River tributaries, and significant (P<0.001) heterogeneity (P<0.001) at the GMP-3 locus between Missouri River and glacial lake stocks. A dendogram derived from Nei unbiased genetic identity values produced separate branchings for the South Dakota and Mississippi River walleyes. All four walleye stocks in South Dakota were morphologically variable, although no one character could be used as a diagnostic tool to separate the stocks visually. Discriminant function analysis of eight of the most powerful discriminatory characters was successful in correctly classifying walleyes by origin with 83-97% accuracy.

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Growth, Survival, And Vulnerability To Predation Of Stocked Walleye (Stizostedion Vitreum) Fingerlings, James D. Wolters Jan 1988

Growth, Survival, And Vulnerability To Predation Of Stocked Walleye (Stizostedion Vitreum) Fingerlings, James D. Wolters

Electronic Theses and Dissertations

In laboratory tanks, largemouth bass (Micropterus salmoides) and northern pike (Esox Lucius consumed fathead minnows (Pimephales promelas) 2.6 times more frequently than walleye (Stizostedion vitreum) and 5.7 times more than lepomids. Prey were more vulnerable in circular than rectangular tanks. In field studies, walleye fingerlings averaging 35 mm and 53 mm (mean total length) were stocked in two ponds (3- and 7- hectares) respectively: both contained largemouth bass, northern pike, yellow perch (Perca flavescenes), green sunfish (Lepomis cyanellus), and fathead minnows. Aquatic insects dominated the diet of largemouth bass for 3 days after walleye were stocked, indicating that walleye fingerlings …

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Waterfowl Production On Three Types Of Artificial Nesting Structures In South Dakota Wetlands, Marcy Haworth Jan 1988

Waterfowl Production On Three Types Of Artificial Nesting Structures In South Dakota Wetlands, Marcy Haworth

Electronic Theses and Dissertations

Artificial nesting structures are currently being used by various agencies to offset the decline in waterfowl production due to predation losses and degradation of nesting habitats. However, the various structure types available are not equally attractive to nesting waterfowl. This study looked at 3 types of artificial nesting structures – open topped cone baskets, round hay bales, and concrete culverts – and evaluated their used, success, and production in South Dakota. Structure type and site characteristics were correlated to occupancy rates and nesting success. Sixty-eight baskets and 205 bales were monitored during 1986, and 154 baskets, 200 bales, and 20 …

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Forage Potential Of Seasonal Wetlands, Daniel Edward Hubbard Jan 1988

Forage Potential Of Seasonal Wetlands, Daniel Edward Hubbard

Electronic Theses and Dissertations

Investigations on aspects of seasonal wetland forage potential were conducted in eastern South Dakota. The quantity and quality of the standing crop of vegetation in 6 seasonal wetland communities were assessed at the end of the growing season in 1983 and in 2 seasonal-wetland-dominated basins and their associated uplands (native mixed-grass prairie) over the growing season in 1985. Crude protein (CP), ash, detergent fiber, and in vitro digestible dry matter (IVDDM) values were measured on the above-ground material of whitetop [Scolochloas festucacea (Willd.) Link], slough sedge (Carex atherodes Spreng.), burred (Spargnaium eurycarpum Engelm.), and smartweed (Polygonum amphibium L. var. emersum …

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Productivity, Movements, And Habitat Use Of Nesting And Brooding Wild Turkey Hens In Gregory County, South Dakota, Keith Stephen Day Jan 1988

Productivity, Movements, And Habitat Use Of Nesting And Brooding Wild Turkey Hens In Gregory County, South Dakota, Keith Stephen Day

Electronic Theses and Dissertations

Radio-equipped wild turkey (Meleagris gallopavo) hens (n=53) were monitored in a prairie river breaks environment in south-central South Dakota during 1986 and 1987. Seventy percent (36 of 47 adults and 1 of 6 juveniles) of the monitored hens nested. Hens that nested prior to 7 May selected nest sites in woodland habitats, while hens nesting later than 7 May selected nest sites in grassland habitats. Hens nested at sites with higher (P<0.05) percent visual obstruction, percent shrub cover, presence of overhanging vegetation, and habitat diversity than found at random control sites. Nest sites also allowed greater field of vision and opportunities for escape than random controls. Discriminant models developed from variables measured at nest and control sites were effective in distinguishing between the 2 categories. Seventeen of 39 (43.6%) clutches hatched, and 11 broods survived to mid-August. Poult survival in 1986 was 42.9%, with all poult mortality occurring during the first 2 weeks post-hatch. Accurate data for poult survival was not obtainable during 1987, but survival appeared to be similar to 1986. Broods moved up to 3.5 km from nest sites before establishing definite ranges. Broods ranges were composed of ≥50% woodland types, while woodlands comprised only 30.8% of the study area. Mean range size increased 3-fold from the 0-4 week age class (Age 1) to the 4+ week age class (Age 2). Broods used habitats in proportion to availability within ranges. However, grasslands were used more than expected (P<0.05) between 0631 hr and 1130 hr over the summer, and less than expected (P<0.05) by Age 2 broods between 1131 hr and 1630 hr. Woodlands were used more than expected between 1131 hr and 1630 hr over the summer, but not significantly so. Seventy-seven percent of all brood sightings made between 0631 hr and 1130 hr, and 67% of all sightings made between 1631 hr and 2030 hr were in grassland habitats. Seventy-two percent of all brood sightings made between 1131 hr and 1630 hr were in woodlands. Grassland brood use sites had greater forb cover, less grass cover, and were closer to habitat edges than random control sites (P<0.05). Discriminant analysis effectively reclassified grassland brood use sites, but not control sites. Age 1 broods sued grassland sites with greater overhead (> 30 cm) shrub cover, and nearer habitat edges than sites used by Age 2 broods (P<0.05). Woodland brood use sites were nearer (P<0.05) habitat edges than random controls. No significant differences could be found between woodland sites used by Age 1 and Age 2 broods. Discriminant analysis was ineffective in distinguishing between classes for woodland brood use sites or between ages for either woodland or grassland brood use sites.

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Forced Vibrations Of Hollow Cylindrical Structures, Douglas Jose Nunez Briceno Jan 1988

Forced Vibrations Of Hollow Cylindrical Structures, Douglas Jose Nunez Briceno

Electronic Theses and Dissertations

Whereas the pioneers of vibration investigations sought the understanding of the natural phenomena and the derivation of mathematical models to better describe the vibration of physical systems, the researchers in this century have strived to apply the knowledge gained in the past to make new discoveries, so that vibration analysis can be applied to practical engineering problems. Hence, today's engineers have become aware of the fact that many engineering systems are subjected to vibrations either because of external excitations (forced vibrations) or because of the system's ability to store energy as a result of its elastic properties (free vibrations). Being …

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Parallel Processing Of The Fast Fourier Transform, Ke Zhou Jan 1988

Parallel Processing Of The Fast Fourier Transform, Ke Zhou

Electronic Theses and Dissertations

The first FFT algorithms were reported by Runge and Konig in 1924, and by Danielson and Lanczos in 1942. However, the FFT didn't receive much attention at all until Cooley and Tukey published their algorithm in 1965. The Cooley-Tukey algorithm is simple and widely used in many application software packages. Winograd developed his FFT in 1976, which is based upon the prime factor theory. It is typically faster than the Cooley-Tukey Algorithm, if the computer system has no multiplication instructions. According to the book prepared by the Digital Signal Processing Committee of the IEEE in 1979, the speed difference among …

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Impact Of Teacher In-Service On Use Of A Nutrition Education Program, Cathrene Drews Voelzke Jan 1988

Impact Of Teacher In-Service On Use Of A Nutrition Education Program, Cathrene Drews Voelzke

Electronic Theses and Dissertations

The purpose of this study was to determine if the methods used to place nutrition education materials with elementary teachers affected the use of the materials in the nutrition curriculum. Data were collected in March and April 1988 from a 36 percent random sample of the elementary teachers in South Dakota who received the Food ...Your Choice, 1-6 (FYC) nutrition education materials during the Fall of 1987. Demographic, background and usage information was obtained from a survey instrument designed by the researcher. Instruments were sent to 396 teachers who had participated in one of two different types of in-service training …

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Incidence Of Fusarium Wilt Of Flax Influenced By Biotic And Abiotic Factors, Aly Abd El-Hady Aly Jan 1988

Incidence Of Fusarium Wilt Of Flax Influenced By Biotic And Abiotic Factors, Aly Abd El-Hady Aly

Electronic Theses and Dissertations

Pathogenicity tests of different Fusarium spp. isolated from roots of wilted flax plants and flax seeds, showed that all pathogenic isolates were F. oxysporum. The nonpathogenic Fusarium spp. included F. moniliforme, F. solani, F. oxysporum and F. acuminatym. Cross protection tests of the nonpathogenic isolates of Fusarium spp. revealed that the large majority of the isolates which had outstanding cross-protective ability were E. oxysporum, and large differences in cross-protective ability were observed. Simultaneous inoculation of seven flax cultivars with a highly virulent isolate of F. oxysportm f.sp. lini and a nonpathogenic isolate of F. oxysporuron, significantly decreased the amount of …

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An Evaluative Study And Analysis Of The Existing Senior High School Art Curricula Within The Memphis City School System / By Helen Margaret Stahl, Helen Margaret Stahl Jan 1988

An Evaluative Study And Analysis Of The Existing Senior High School Art Curricula Within The Memphis City School System / By Helen Margaret Stahl, Helen Margaret Stahl

Electronic Theses and Dissertations

No abstract provided.

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Population Modeling Of Greenbug Aphids In Spring Wheat, Marie Ann Coffin Jan 1988

Population Modeling Of Greenbug Aphids In Spring Wheat, Marie Ann Coffin

Electronic Theses and Dissertations

A computer model was developed which used weather data and initial field counts of green-bug aphids to predict the behavior of the aphid population throughout the season. The model considered the effects of heat, food supply, predati6n and rainfall on the population. Data were obtained on the life cycle of aphids grown in a controlled laboratory setting. These data were used to postulate a stochastic model of aphid growth which could be applied to a population in the field. A modified Leslie matrix model was used to predict the population's future behavior. Factors were then added to this basic model …

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Conservation Of Least Terns And Piping Plovers Along The Missouri River And Its Major Western Tributaries In South Dakota, Monica Jean Schwalbach Jan 1988

Conservation Of Least Terns And Piping Plovers Along The Missouri River And Its Major Western Tributaries In South Dakota, Monica Jean Schwalbach

Electronic Theses and Dissertations

Interior least terns (Sterna antillarum) and piping plovers (Charadrius melodus) are listed as endangered or threatened over all of their breeding range, including South Dakota (SD). Investigations were made into the status, distribution, production, habitat characteristics, and factors limiting productivity of least terns and piping plovers in SD. The study area included the Missouri River from the North Dakota state line to Ponca State Park, Nebraska, and the lower 1/3 of the Grand, Moreau, Cheyenne, and White rivers. Least tern numbers increased substantially (253; 367) between 1986 and 1987, but plover numbers increased only slightly (187; 197). Terns and plovers …

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Wetland Characteristics Of Avian Cholera Outbreaks And Surface Water Transfer In The Nebraska Rainwater Basin Area, Brian J. Smith Jan 1988

Wetland Characteristics Of Avian Cholera Outbreaks And Surface Water Transfer In The Nebraska Rainwater Basin Area, Brian J. Smith

Electronic Theses and Dissertations

Avian Cholera (Pateurella multocida) has infected and killed thousands of migrating waterfowl each year since 1975 in Nebraska’s rainwater basin area. Disease outbreaks in migrating waterfowl populations just prior to the nesting season are of concern to biologists. Feedlots and itner-wetland basin surface water transfer mechanisms of the avian cholera causative agent, P. multocida, were investigated using remote sensing techniques. Wetland basin characteristics (classification type, adjacent landuse, basin landuse, and basin densities) were also investigated for relationships to 1981 avian cholera outbreaks. No surface drainage relationships were found that would permit the transfer of P. multocida from one wetland basin …

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Production Of Triploid Rainbow Trout For Evaluation In South Dakota Waters, Jeff C. Dillon Jan 1988

Production Of Triploid Rainbow Trout For Evaluation In South Dakota Waters, Jeff C. Dillon

Electronic Theses and Dissertations

In September 1986, approximately 50,000 rainbow trout (Salmo gairdneri) eggs were fertilized and subjected to heat shocks to prevent expulsion of the second polar body, theoretically resulting in triploid embryos. Heat shocks were at 26 and 28°c, began 10, 20, 30, or 40 min after fertilization, and lasted for 10 or 20 min for a total of 16 treatments. Another 25,000 eggs served as controls and were handled identically but at a normal water temperature of 12°c. Cumulative hatching rates for eggs that were heat-shocked at 26 and 28° were 64 and 50%, respectively, compared to control eggs which had …

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Serum Progesterone Levels As A Means To Study Reproductive Function In Female Lethal Yellow Mice (Ay/A; C57bl/6j), Jon Andrew Gonsor Jan 1988

Serum Progesterone Levels As A Means To Study Reproductive Function In Female Lethal Yellow Mice (Ay/A; C57bl/6j), Jon Andrew Gonsor

Electronic Theses and Dissertations

This research concentrated on the reproductive problem associated with the Ay. Granholm and Breck reported that lethal yellow females never produced more than three litters when put into production at puberty. Ay/a females are as reproductively efficient as their a/a littermates at a young age. Ay/a females progressively become obese and reproductively senescent beyond the age of 120 days. The obese Ay/a females beyond 120 days exhibit lower uterine weights and depressed ovulation. Upon treatment with exogenous pituitary gonadotropins, follicle stimulating hormone (FSH) and luteinizing hormone (IH), the reproductively senescent AY/S! females' ovulatory rates were restored to near control levels. …

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Seasonal Habitat Use, Home Range, And Dispersal Of Wild Turkeys In Southcentral South Dakota, Scott L. Laudenslager Jan 1988

Seasonal Habitat Use, Home Range, And Dispersal Of Wild Turkeys In Southcentral South Dakota, Scott L. Laudenslager

Electronic Theses and Dissertations

Seasonal movements, home range, and habitat use of wild turkeys in south-central South Dakota were investigated using radio telemetry from summer 1984 to winter 1986. Spring dispersal from wintering sites ranged from 0.2 to 5.8 km (x = 2.8 km). Non-nesting females moved significantly (P ~ 0.05) farther than males. Fall movements from summer to winter habitat ranged from o.o to 5.0 km (x = 2.2 km). Marked birds always returned to summer areas used in previous years. In contrast, wintering areas changed yearly among some individuals. Home ranges for all birds in summer ranged from 46. 7 ha to …

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The Fast Hartley Transform On A Parallel Processor, Boon Pock Lim Jan 1988

The Fast Hartley Transform On A Parallel Processor, Boon Pock Lim

Electronic Theses and Dissertations

In 1942, Hartley proposed a new formulation of the Fourier integral identity by using cas (wt) as the transform kernel, where cas(wt) = cos(wt) + sin(wt), is an abbreviation for cosine and sine. It is called the Hartley transform and has many properties similar to those of the Fourier transform. The important distinctions are that the Hartley transform of a real-valued function is also real valued, and the inverse transformation is operation as the direct transformation. the same integral Furthermore, its evaluation does not involve complex functions. This is a potential advantage if the transform is to be explicitly computed. …

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A Digital Model For Stream-Aquifer Evaluation, Pei-Shin Tu Jan 1988

A Digital Model For Stream-Aquifer Evaluation, Pei-Shin Tu

Electronic Theses and Dissertations

No abstract provided.

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Scattering By A Dielectric Cylinder Partially Embedded In A Ground Plane, Mohammad Ali Kolbehdari Jan 1988

Scattering By A Dielectric Cylinder Partially Embedded In A Ground Plane, Mohammad Ali Kolbehdari

Electronic Theses and Dissertations

No abstract provided.

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Hydraulic Geometry Of Channel Networks : Tests Of Scaling Invariance, Eduardo Esteban Cadavid Jan 1988

Hydraulic Geometry Of Channel Networks : Tests Of Scaling Invariance, Eduardo Esteban Cadavid

Electronic Theses and Dissertations

No abstract provided.

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Automatic Precision Microwave Measurements In Waveguides, Anad Gundavajhala Jan 1988

Automatic Precision Microwave Measurements In Waveguides, Anad Gundavajhala

Electronic Theses and Dissertations

No abstract provided.

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Investigation Of The Solution Of Hybrid Integral Equations For Electromagnetic Scattering By An Inhomogeneoous Dielectric Body / By Bo-Syung Yang, Bo-Syung Yang Jan 1988

Investigation Of The Solution Of Hybrid Integral Equations For Electromagnetic Scattering By An Inhomogeneoous Dielectric Body / By Bo-Syung Yang, Bo-Syung Yang

Electronic Theses and Dissertations

No abstract provided.

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Optimization By Statistical Experimental Methods Of The Pultrusion Process For Graphite-Epoxy Composites, Rajendra P. Donti Jan 1988

Optimization By Statistical Experimental Methods Of The Pultrusion Process For Graphite-Epoxy Composites, Rajendra P. Donti

Electronic Theses and Dissertations

No abstract provided.

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The Impact Of Multicultural Education On The Self-Concept, Racial Attitude, And Student Achievement Of Black And White Fifth Andsixth Graders / By Ollye Brown Shirley, Ollye Brown Shirley Jan 1988

The Impact Of Multicultural Education On The Self-Concept, Racial Attitude, And Student Achievement Of Black And White Fifth Andsixth Graders / By Ollye Brown Shirley, Ollye Brown Shirley

Electronic Theses and Dissertations

No abstract provided.

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Mteep, An Intelligent Expert System To Design Mechanical Transmission Elements, Sanjiv Ranjan Jan 1988

Mteep, An Intelligent Expert System To Design Mechanical Transmission Elements, Sanjiv Ranjan

Electronic Theses and Dissertations

No abstract provided.

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Electromagnetic Scattering From Multiple Strips In The Presenceof A Circular Conducting Cylinder / By Man-Chun Yu, Man-Chun Yu Jan 1988

Electromagnetic Scattering From Multiple Strips In The Presenceof A Circular Conducting Cylinder / By Man-Chun Yu, Man-Chun Yu

Electronic Theses and Dissertations

No abstract provided.

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Numerical Investigation Of Natural Convection Within A Triangular Shaped Attic Enclosure, Majid Ghassemi Jan 1988

Numerical Investigation Of Natural Convection Within A Triangular Shaped Attic Enclosure, Majid Ghassemi

Electronic Theses and Dissertations

No abstract provided.

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