Rayleigh matroids are a class of matroids with sets of bases that satisfy a strong negative correlation property. Interesting characteristics include the existence of an efficient algorithm for sampling the bases of a Rayleigh matroid [7]. It has been conjectured that the class of Rayleigh matroids satisfies Mason’s conjecture [14]. Though many elementary properties of Rayleigh matroids have been established, it is not known if this class has a finite set of minimal excluded minors. At this time, it seems unlikely that this is the case. It has been shown that there is a single minimal excluded minor for the smaller class of binary Rayleigh matroids [5]. The aim of this thesis is to detail our search for the set of minimal excluded minors for ternary Rayleigh matroids. We have found several minimal excluded minors for the above class of matroids. However, our search is incomplete. It is unclear whether the set of excluded minors for this set of matroids is finite or not, and, if finite, what the complete set of minimal excluded minors is. For our method to answer this question definitively will require a new computer program. This program would automate a step in our process that we have done by hand: writing polynomials in at least ten indeterminates as a sum with many terms, squared.

Rayleigh matroids are a class of matroids with sets of bases that satisfy a strong negative correlation property. Interesting characteristics include the existence of an efficient algorithm for sampling the bases of a Rayleigh matroid [7]. It has been conjectured that the class of Rayleigh matroids satisfies Mason’s conjecture [14]. Though many elementary properties of Rayleigh matroids have been established, it is not known if this class has a finite set of minimal excluded minors. At this time, it seems unlikely that this is the case. It has been shown that there is a single minimal excluded minor for the smaller class of binary Rayleigh matroids [5]. The aim of this thesis is to detail our search for the set of minimal excluded minors for ternary Rayleigh matroids. We have found several minimal excluded minors for the above class of matroids. However, our search is incomplete. It is unclear whether the set of excluded minors for this set of matroids is finite or not, and, if finite, what the complete set of minimal excluded minors is. For our method to answer this question definitively will require a new computer program. This program would automate a step in our process that we have done by hand: writing polynomials in at least ten indeterminates as a sum with many terms, squared.

We synthesize polyamide compounds containing bithiophene functional group and lexitropsin analogs and study their biological activity.

Busoni was one of the most celebrated pianists of late nineteen century. Besides his wonderful performing, his virtuosic transcriptions of Bach compositions contribute to Romantic piano repertoire. Through years, the music of Bach still popular on stage, and inspires many composers transcribe his works to other instruments. In 1893, Busoni transcribed, for the piano, the famous Bach Chaconne for violin solo from the Partita No.2 in D minor and dedicated it to the pianist Eugen d'Albert. Today, among the numerous versions, Bach-Busoni Chaconne is most often performed. This thesis mainly discuss the arrangement of Bach-Busoni Chaconne, and divided three main directions. The first part, concentrated on background research and investigated on correlation between Busoni¡¦s and Bach¡¦s Chaconne in D minor. In second part, aimed at the analysis of texture in Bach- Busoni. In third part, discussed the features of the original works which Busoni inherited from Bach, and the differences between Busoni¡¦s work and Bach¡¦s original work. The differences are divided into the emphasis on sarabande, the imitate colors of the pipe organ with sound effects, the usage of octave, and different register. Busoni followed closely to Bach¡¦s original work; he not only added virtuosic passages, pedal usage, dynamic change, different register, but also gave expression terms to reach the result of imitate the quality of orchestra and pipe organ. The Chaconne in Busoni¡¦s hand became a piano piece with great Romantic spirit in it.

Minor actinides represent the long-term radiotoxicity of nuclear wastes. As one of their potential incineration options, partitioning and transmutation in fission reactors are seriously considered worldwide. If implemented, these technologies could also be a source of nuclear fuel materials required for sustainability of nuclear energy. The objective of this research was to evaluate performance characteristics of Very High Temperature Reactors (VHTRs) and their variations due to configuration adjustments targeting achievability of spectral variations. The development of realistic whole-core 3D VHTR models and their benchmarking against experimental data was an inherent part of the research effort. Although the performance analysis was primarily focused on prismatic core configurations, 3D pebble-bed core models were also created and analyzed. The whole-core 3D models representing the prismatic block and pebble-bed cores were created for use with the SCALE 5.0 code system. Each of the models required the Dancoff correction factor to be externally calculated. The code system DANCOFF-MCThe whole-core/system 3D models with multi-heterogeneity treatments were validated by the benchmark problems. Obtained results are in agreement with the available High Temperature Test Reactor data. Preliminary analyses of actinide-fueled VHTR configurations have indicated promising performance characteristics. Utilization of minor actinides as a fuel component would facilitate development of new fuel cycles and support sustainability of a fuel source for nuclear energy assuring future operation of Generation IV nuclear energy systems. was utilized to perform the Dancoff factor calculations.

Thesis (M. App. Sc.)--University of Queensland, 2001. / Includes bibliographical references.

The purpose of this study was to determine the relationship between anxious/depressed and withdrawn symptoms and performance on a variety of cognitive and academic achievement measures. The sample included 343 subjects, drawn from a pool of subjects aged 6 to 11 years who were part of a sleep apnea study. A comprehensive battery of selected tests that measured cognitive and academic achievement function was administered to all sampled subjects. Parents of the subjects were given an instrument to complete in order to assess behavior function.The obtained data were analyzed by using Pearson Product Moment Correlation Coefficient analyses, T test procedures, and chi-square analyses. A significant negative correlation was found between anxious/depressed and withdrawn symptoms and the following cognitive and academic measures: general intelligence including verbal and nonverbal abilities, language, specific executive function skills, attention and processing speed, psychomotor speed and coordination with the dominant hand trial, and a subtest assessing math problem solving skills.There were statistically significant differences found between those subjects who obtained approaching borderline and clinically significant anxious/depressed, withdrawn, and both anxious/depressed and withdrawn symptoms on the following cognitive and academic measures: general intelligence including verbal and nonverbal abilities, language, specific executive function skills, attention and processing speed, psychomotor speed and coordination with the dominant hand, the interference and/or delayed recall trial of a memory task, and basic reading, math problem solving, and early spelling/writing skills.There was a significant difference found with regard to parent education level for children identified with withdrawn symptoms as compared to children without these symptoms but there were no other differences with regard to age, gender, ethnicity, or parent education level for children identified with anxious/depressed or withdrawn symptoms as compared to children without these symptoms. Additionally, Caucasian children performed significantly better than Hispanic children on a variety of the cognitive and academic measures.Overall, these findings support the hypotheses that depressive symptomatology does impact performance on cognitive and academic measures. Additionally, methodological problems for exercising caution in the interpretation of obtained findings were discussed. The implications of these findings for psychological practitioners, educators, and physicians were described.

Previous attempts at understanding Revelation have stressed the common links between it and the rest of the New Testament writings, or else have tended to ignore entirely its distinctive perspective on the world. This thesis illuminates the content of John's unique message in respect to its particular life-situation. There are nine chapters and the first deals with a review of the date and authorship of the Apocalypse while the second looks at how genre criticism can help us understand the audience's predispositions and the author's strategy. The third chapter is also concerned with literary criticism in that it looks at how John presents himself to his audience and how this gives us clues to his social standing within the seven assemblies named in the text. Chapters four and five look in detail at John's use of two important titles, God as 'the Almighty' and Jesus as 'the Lamb'. Chapter six deals with the usefulness of sociology in helping us understand the dynamics of the life-setting in Asia Minor by reference to research on sects and millenarian movements. Chapter seven covers the manner in which Rome ruled and compares this to the brutal and vindictive images in Revelation. Chapter eight looks at how the Apocalypse differs from the indigenous religions of Asia Minor (especially the cult of Ephesian Artemis), the Jews in Sardis and the early Christian works of 1 Peter and Ignatius of Antioch. The ninth chapter forms our conclusions. John of Patmos wrote an apocalypse to seven named assemblies in Western Asia Minor. This was a genre with which his audience was familiar. He attempted to gain their confidence in Rev 1-5 by using a number of literary devices which stressed that he was a legitimate bearer of a transcendent message. The message was so unusual in its malevolent imagery that he needed to assure his audience that they could be confident in accepting his analysis of the world around them. John and his followers can be best characterised as a revolutionist sect and even a millenarian movement. Such groups separate themselves from the wider world and expect its imminent end. They tend to come from marginalised groups deprived of power and status. John's message was unique among the early Christian texts in that it presents Jesus in the role of a theriomorphic avenger and God is seen as the Almighty who wreaks indiscriminate torture and then utterly destroys his enemies. Such images are drawn as a counterpoint to John's understanding of Roman rule as violent and repressive. In response to this understanding he forms a theology based on brutality, vengeance and cruelty and desires power, honour and wealth, the crucial values in the Roman world, for the Almighty God and his most ardent followers.

No description available.

Thesis (M.Ag.Sc.) -- University of Adelaide, Dept. of Plant Pathology, 1975.