Lie geometry of flat fronts in hyperbolic space

We propose a Lie geometric point of view on flat fronts in hyperbolic space as special omega-surfaces and discuss the Lie geometric deformation of flat fronts

High-versus low-stress yield test environments for selecting superior soybean (Glycine max L. Merr) Lines

A problem that continues to perplex plant breeders is selecting for yield in stress versus non-stress environments. The purpose of this research was to select superior soybean lines which were best adapted to both low- and high-stress environments by using low- versus high-stress yield test environments. Forty-eight random F4 - derived lines were evaluated for yield over a five year period (1982-1986) at two locations [Crossville in East and Milan in West Tennessee] on high fertility, low acidity (low-stress), and low fertility, high acidity (high-stress) nursery environments at each location. Mean yields were 0.50 vs. 2.00 and 0.74 vs. 2.71 Mg ha-1 for Crossville and Milan, high- vs. low-stress sites, respectively. Five additional locations throughout the state were included in 1985 and 1986 as yield trial testing sites for obtaining information about yield and broader adaptability. Soil chemical and physical parameters of nursery environments were measured in 1984 and 1985 at each of the four nursery sites. The soil at the Crossville low-stress site was classified as a Typic Hapludult and the high-stress site was classified as an Aquic Fragiudult and Typic Hapludult. The soil at Milan low-stress site was classified as an Aquic Fragiudult over a buried Typic Ochraqualf and the high-stress site was classified as a Typic Fragiudalf and Glossic Fragiudult that intergraded to an Aerie Glossudalf. Soil bulk densities were taken at three soil depths at each site. The density measurements were in an acceptable range (1.3-1.5 m-3) which indicated that no physical barrier existed which would inhibit root penetration into the soil profile. Soil chemical analyses indicated that high acidity and aluminum concentration were major factors responsible for reduced availability of P, K, Mg, and Ca which caused yield reduction and poor growth in high-stress nursery sites. Sixteen lines (33% selection intensity) were designated as the superior lines because their mean yields were above the grand mean in high-stress environments (0.62 Mg ha-1) as well as above the grand mean in low-stress tests plus yield trials (2.25 Mg ha-1). These sixteen lines served as the superior standard for the purpose of simulating selection. Eleven of the top 16 soybean lines came from 2 crosses (Essex X (Bay x N73-520 and Essex x Hodgson) and the top 3 superior lines came from the cross Essex x (Bay X N73-520). Simulated selection, using either nursery type within location(s) for one year of testing, revealed 32 to 54% of the superior lines would have been selected. At least 1 of the top 3 superior lines would have been selected in every case, regardless of nursery type(s), location(s), or year(s) used. Combining high- or low-stress tests over location(s) in a given year or years (2 or 3) did not improve the effectiveness of selection enough to justify the extra time, expense, and labor for the purpose of selecting the highest yielding group ( one third) from a random set of lines in preliminary tests. Comparisons between 33 and 20% selection intensity generally revealed a lower probability in obtaining at least 1 of the top 3 superior lines using 20%, and in some cases the probability was zero. This indicates that a selection Intensity greater than 33% is inadvisable at the preliminary yield testing stage. Stability analyses revealed that the sixteen superior lines had higher regression coefficients with 10 of those lines having regression coefficients greater that 1.00. Analyses of plant height and maturity were conducted to determine if selecting the highest yielding lines would have resulted in indirect selection of lines which were shorter and earlier or taller and later or any other combination. No trend of this type would have occurred

Teacher supplementary employment at the junior and senior high school level in Chesterfield County, Virginia June, 1967-May, 1968

Statement of the problem. The purposes to this study are (1) to determine what percentage of the teachers employed in the intermediate and senior high schools in Chesterfield County, Virginia, are engaged in supplementary employment; (2) to determine whether those holding supplementary Jobs reel there is a significant effect on one\u27s ability to accomplish the activities associated with the regular Job; (3) to determine the percentage or individuals engaged in supplementary Jobs who have endeavored to grow professionally during the year; (4) to classify groups relative to those studied as to (a) age (b) sex (c) number of dependents (d) marital status (e) salary (f) need for supplementary employment (g) type of employment (h) summer vs. regular term supplementary employment (i) teaching experienc

Certain correlations between ratings by, (1) intelligence tests; (2) standardized tests; and (3) teachers’ marks

Thesis (M.S.Ed.)--University of Kansas, Education, 1921. ; Includes bibliographical references

Lysine Supplementation of Swine Rations Containing Oats

The swine industry is a multi-million dollar business in the United States, concentrated primarily in the Corn Belt area. In South Dakota, which is located on the fringe of the Corn Belt, swine production is an important part of the economy of the state, which ranks ninth among all states, in hog numbers. Because of this tremendous volume of business, feed companies have put great emphasis on feed additives in an effort to lure farmers into buying their product. With the attention focused on antibiotics, chemobiotics, enzymes, natural and synthetic hormones, tranquilizers, and other feed additives designed to increase the efficiency of perk production, there is a tendency to forget about one of the prime essentials in a ration, an essential for life-protein. Lysine, a constituent of protein, is an essential amino acid, which is required in the ration of non-ruminants, including swine. The importance of lysine has been shown many times, however, since corn is the common grain fed to swine, most of the experiments pertaining to lysine were conducted with corn rations. This experiment was conducted to determine the value of supplemental lysine when added to oat rations as determined by rate of gain and feed efficiency

The Guitar Voice Of Randy Rhoads

Randy Rhoads was an influential rock guitarist whose synthesis of musical influences had an impact on heavy metal. He developed a classically influenced guitar style that inspired new developments in the guitar’s virtuosic technique and harmonic and melodic language. The sound of heavy metal can be traced directly to his guitar style. Yet no definitive studies have been conducted on his guitar voice, synthesis of musical influences, or contribution to heavy metal music. This thesis is the first study to define the musical influences that make up Rhoads’s innovative guitar voice and playing style. It examines his early childhood, formal training, and influences, honing his skills in Quiet Riot, mastering his skills on Blizzard of Ozz, and mastering his skills on Diary of a Madman. It provides a look at his guitar voice through his adaptation, synthesis, and implementation of musical influences by conducting a detailed musical analysis of the formal, harmonic, rhythmic, and melodic aspects of the songs on Blizzard of Ozz and Diary of a Madman. The examination of his guitar voice and playing style is provided by the following materials: CDs, DVDs, books, scholarly journals, master’s theses and doctoral dissertations, and transcriptions of songs on Blizzard of Ozz and Diary of a Madman. The aim of this thesis is to demonstrate that Rhoads’s guitar voice and playing style are classically influenced and a synthesis of different musical styles. It advocates that his playing style pushed the hard rock music envelope create a new approach to guitar playing that led to a more refined version of the music. It suggests that Rhoads’s musical approach and mindset in the 1980s: classical-style virtuosity, harmony and melody, and acoustic guitar was important to the development of the heavy metal sound, therefore placing him in the historical annals of popular music