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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Will-o'-the-Wisp: an ancient mystery with extremophile origins?

Edwards, Howell G.M. January 2014 (has links)
No / This paper draws a comparison between the 700-year-old historically reported will-o'-the-wisp phenomenon and the more recent discovery of extremophilic colonization of hostile environments; both have been observed as present in isolated, stressed environmental regions and originating from biological phenomena. However, whereas extremophilic activity can be understood in terms of a survival strategy based upon the synthesis of specific suites of protective biochemicals which are designed to control biogeologically the stressed habitats and to provide protection against the extreme environments, the analytical techniques that have proved so successful for the illumination of these survival strategies of extremophiles and which are now being miniaturized for in-field studies and for extraterrestrial exploration have not been applied to a clarification or evaluation of the phenomenon of will-o'-the-wisp. The reason is simply that the will-o'-the-wispsightings have now disappeared completely. Tantalizingly, all of the most reasonable physico-chemical and biological explanations for the will-o'-the-wisp phenomenon proved to be unsatisfactory in some respect and it is clear that, just as in the case of extremophilic colonization, will-o'-the-wisp would benefit from a modern rigorous analytical study which would produce the data from which the potentially novel biological behaviour could be characterized and which would help a better understanding to be made of our natural world.
2

Wakeboards : correlation of cognitive and analytical data on fins

Rosquete, Ramon J. 01 January 2007 (has links)
This thesis provides information about the effects that different fins have on a wakeboard and how it affects riders of all skill levels. The research is intended to show whether there is a correlation between the "feeling" that a rider perceives by performing a certain maneuver, and the results encountered on a complete laminar flow analysis. In addition, a discussion of available theories of how fins perform their objective will be presented. While it is possible for a rider to learn the different advantages and disadvantages of each fin size, material, and design by trying each configuration, such an approach is expensive and not practical. By analyzing and reporting how factors such as velocity, drag, pressure, and geometry, riders can have a better understanding of what kind of fin(s) they should consider when purchasing one. In addition this thesis provides qualitative results that show how each fin differs depending on its characteristics and material. Results are based on experimental trial of different types of fin by a set number of riders. At the end of this discussion the reader should have an understanding that the overall ranking of the fins based on FLUENT data is similar to that from the cognitive statistics. Therefore, on the basis of all the assumptions taken in this thesis and the results obtained, it is possible to predict a fin's performance based on the values that a software package like FLUENT will provide.
3

Analysis of Insoluble Organic Material in Carbonaceous Meteorites by Combined Vacuum Pyrolysis-Gas Chromatography-Mass Spectrometry

Bandurski, Eric Lord January 1975 (has links)
The polymer-like organic material in the Orgueil (Cl) chondrite was analyzed by high vacuum pyrolysis/gas chromatography/mass spectrometry, a new technique specially developed for this type of polymer analysis. Orgueil powder, previously solvent-extracted to remove all soluble organic compounds, whether indigenous or contaminant, was pyrolyzed in temperature steps at 150°, 300°, 450°, and 600°C. Gas chromatographic/mass spectrometric analysis of the vacuum pyrolyzates revealed a series of alkenes to C₈, an extensive series of alkylbenzene isomers, thiophene, alkylthiophenes, and benzothiophene, and the nitrogen compounds acetonitrile, acrylonitrile, and benzonitrile. Comparison of the Orgueil polymer fragments with those reported in polymer analyses of the Murchison and Allende meteorites suggests that qualitatively and quantitatively the Orgueil and Allende polymeric materials are very similar. The presence of acetonitrile, acrylonitrile, and benzonitrile, typical breakdown products of amino acids, in Orgueil pyrolyzates suggests the presence of amino acids in an insoluble form in the meteorite polymer matrix. Changes in the distribution of polymer fragments occurred during high vacuum pyrolyses as the temperature was increased stepwise from 150° to 600°C. These changes imply a progressive alteration in the character of the polymeric material toward a condensed aromatic structure through the preferential loss of aliphatic and heteroaromatic portions at lower temperatures. A possible inference is that the polymeric material in Orgueil is a complex mixture of polymerized materials having different thermal stability. Comparison of vacuum pyrolyzates of the Orgueil polymeric material with pyrolyzates of terrestrial kerogen indicates similarities in composition and structure. These similarities suggest the possibility that meteorite polymers may have formed near the surfaces of meteorite parent bodies by low temperature processes similar to those by which terrestrial kerogen is formed.
4

Адаптация корпоративных учетно-аналитических данных к требованиям автоматизированной интеллектуальной системы управления предприятием малого бизнеса : магистерская диссертация / Adaptation of corporate accounting and analytical data to the requirements of an automated intelligent management system for small business

Жаркинбаева, Д. Д., Zharkinbaeva, D. D. January 2020 (has links)
В целях обеспечения корректной и желаемой информации для руководящего состава и учредителей компаний информационные системы необходимо подвергать адаптации в соответствии со спецификой предприятия. Применение инноваций обуславливает сокращение трудозатрат, связанной с обработкой хозяйственных операций, а также получение от использования данной информации при проведении ее анализа более точных результатов. Цель работы заключается в совершенствовании форм и обработке учетно-аналитических данных для соответствия формам и порядку учета автоматизированных интеллектуальных систем управления малыми предприятиями. В качестве объекта данной работы рассматривается функциональность интеллектуальных автоматизированных систем. Задачами данной работы определяются следующие направления в виде: стандартизации форм и порядка получения учетно-аналитических данных организации в отношении функциональности автоматизированных интеллектуальных систем; создания единого алгоритма осуществления анализа учетных данных предприятий; формирования правил для использования автоматизированных интеллектуальных систем на участках налогового учета и отчетности; разработки правил для использования автоматизированных интеллектуальных систем на участках товарно-материальных ценностей, их списания и контроля остатков. / In order to provide correct and desired information for the management and founders of companies, information systems must be adapted in accordance with the specifics of the enterprise. The use of innovations leads to a reduction in labor costs associated with the processing of business transactions, as well as obtaining more accurate results from the use of this information when analyzing it. The purpose of the work is to improve the forms and processing of accounting and analytical data in order to comply with the forms and procedures for accounting of automated intelligent management systems for small businesses. The object of this work is the functionality of intelligent automated systems. The tasks of this work define the following directions in the form: standardization of the forms and procedure for obtaining accounting and analytical data of the organization in relation to the functionality of automated intelligent systems; creating a unified algorithm for analyzing the accounting data of enterprises; formation of rules for the use of automated intelligent systems in areas of tax accounting and reporting; development of rules for the use of automated intelligent systems in the areas of inventory, their write-off and control of balances.
5

Адаптация корпоративных учетно-аналитических данных к требованиям автоматизированной интеллектуальной системы управления предприятием : магистерская диссертация / Adaptation of corporate accounting and analytical data to the requirements of an automated intellectual enterprise management system

Ачилова, М. А., Achilova, M. A. January 2018 (has links)
Целью исследования является приспособление учетно- аналитических данных к требованиям автоматизированной интеллектуальной системе управления предприятием в целях расширения и ускорения аналитических возможностей на предприятии. Задачи: интегрировать учетно-аналитические данные в систему управления предприятием; адаптировать корпоративные учетно-аналитические данные к требованиям автоматизированной интеллектуальной системы управления предприятием; разработать порядок анализа корпоративных учетно-аналитических данных для целей реализации автоматизированной интеллектуальной системы управления предприятия; разработать принципиальную схему автоматизированной интеллектуальной системы управления предприятием; выявить критерий применение автоматизированной интеллектуальной системы управления предприятием для целей повышения эффективности выбора поставщиков (подрядчиков); сформулировать критерий применение автоматизированной интеллектуальной системы управления предприятием для целей распределения премиального фонда заработной платы. Научная новизна исследования: 1. Адаптированы корпоративные учетно-аналитические данные к требованиям автоматизированной интеллектуальной системы управления предприятием. 2. Сформирован порядок анализа корпоративных учетно-аналитических данных для целей реализации автоматизированной интеллектуальной системы управления предприятия. / The purpose of the study is to adapt the accounting and analytical data to the requirements of an automated intellectual enterprise management system in order to expand and accelerate the analytical capabilities in the enterprise. Tasks: to integrate the accounting and analytical data in the enterprise management system; adapt corporate accounting and analytical data to the requirements of an automated intellectual enterprise management system; develop a procedure for analyzing corporate accounting and analytical data for the implementation of an automated intellectual enterprise management system; to develop a schematic diagram of an automated intellectual enterprise management system; identify the criteria for the application of an automated intellectual enterprise management system for the purpose of increasing the efficiency of selecting suppliers (contractors); to formulate a criterion for the application of an automated intellectual enterprise management system for the purpose of distributing a bonus payroll. Scientific novelty of the study: 1. Adapt the corporate accounting and analytical data to the requirements of an automated intellectual enterprise management system. 3. The procedure for analyzing corporate accounting and analytical data for the purposes of implementing an automated intellectual enterprise management system.

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