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Kröger, Torsten. "On-line trajectory generation in robotics basic concepts for instantaneous reactions to unforeseen (sensor) events." Berlin Heidelberg Springer, 2009. http://d-nb.info/997432780/04.
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Ravindra, D. V. "Architecture Descriptions for Retargetable Code Translation." Thesis, Indian Institute of Science, 2000. http://hdl.handle.net/2005/88.
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The study of architectural parameterization has long neglected other parameterizations in favour of code selector descriptions.
In this dissertation, we are concerned with providing linguistic notations for modelling architectures with special emphasis on
translation. We focus on high level descriptions to aid code selection and storage allocation. The view taken in the thesis is that a description specializes a framework with a particular architecture. Independently, the framework must support other translation algorithms without constraining their freedom or forcing them towards architecture-specific idioms.
The first contribution is an architectural description language with features tuned towards better parameterizability. Emphasis is laid on addressing site (compile time) parameterizability.
Within the notation, the type system of the machine is decoupled from that of the language with the mapping being left to the user
as a compile-time parameterization. This gives one more degree of freedom for the user to decide on the precision required based on the available realizations. We also give adequate representation
to addressing modes. They are considered to be almost equivalent to operations in complexity. This makes the specification simpler for operations.
From the framework's perspective, as a second contribution, we propose an algorithm for maintaining registers during allocation.
Register allocation algorithms depend on the framework to inform them when registers are exhausted. In such a situation, we pro-
pose an adaptation of bipartite graph matching to keep track of register usage during translation in the presence of architec-
tural constraints. The research also aims at structuring both the specification and software to prevent the closed-syntax bottle-
neck of a lot of specification languages.
We also describe the architecture of the implementation in terms of a very flexible model called the blackboard model.
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Groche, Florian J. [Verfasser]. "Chemical Oxygen Generation From Peroxo-Compounds For Aviation Purposes - From Basic Chemistry To Prototype Design / Florian J. Groche." München : Verlag Dr. Hut, 2017. http://d-nb.info/1155057295/34.
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Simões, Inês da Silva Araújo. "Contributions for a new body representation paradigm in pattern design. Generation of basic patterns after the mobile body." Doctoral thesis, Faculdade de Arquitectura de Lisboa, 2012. http://hdl.handle.net/10400.5/5427.
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Yngve, Frida. "De ska inte tro att de är något : En kvalitativ undersökning av föreställningar och förväntningar gällande internkommunikation." Thesis, Högskolan i Gävle, Avdelningen för humaniora, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-21739.
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Syftet med denna undersökning är att undersöka huruvida det finns några föreställningar eller förväntningar gällande internkommunikation hos arbetsgivare respektive framtida medarbetare ur Generation Y, för att sedan studera hur dessa antingen matchar eller krockar med varandra. Denna undersökning utgår från den åldersdefinition som beskriver Generation Y som födda mellan 1982-2002 (Howe och Strauss, 2010). Undersökningen bygger på semistrukturerade intervjuer som genomförts med nio informanter – sex ur Generation Y samt tre arbetsgivare. De teoretiska perspektiv som undersökningen utgår från är teorin om Generation Y samt David McClellands teori om grundläggande behov för skapandet av motivation. Dessa teorier applicerades på materialet för att studera varför de olika grupperna hade de föreställningar och de förväntningar de hade samt vad deras motiv med dessa förväntningar kunde vara. Undersökningen visar på att både arbetsgivarna och de framtida arbetstagarna ur Generation Y innehar föreställningar och förväntningar gällande internkommunikation dock skiljer dessa sig åt. De båda grupperna har tankar kring vilka områden som kan leda till krockar mellan generationerna men de är inte överens om var krockarna kommer att uppstå eller hur de kan undvikas. Undersökningen visar på att både arbetsgivarna och de framtida arbetstagarna inom Generation Y är viljestarka och bär på föreställningen om att de andra ska anpassa sig.The purpose of this study is to investigate whether there are any beliefs or expectations regarding internal communication among employers and future employees from Generation Y, and study how these two groups either match or clash with each other. The study is based on semi-structured interviews conducted with nine informants, six of Generation Y and three employers. This study is based on the age definition that describes the Generation Y as a generation born between 1982-2002 (Howe and Strauss, 2010). The theoretical perspectives the study uses are the theory of Generation Y and David McClelland's need theory. These theories were used for the analysis of why the different groups had the ideas and expectations they had and what their motives with these expectations could be. The study shows that both future workers from Generation Y and employers hold beliefs and expectations of internal communication – they differ, however. The two groups have thoughts about what areas can lead to clashes between the generations but they do not agree on where collisions will occur or how they can be avoided. The survey shows that both employers and future employees in Generation Y are strong-willed and bears on the notion of the others to adapt.
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Wang, Ling. "Microchannel enhanced neuron-computer interface: design, fabrication, biophysics of signal generation, signal strength optimization, and its applications to ion-channel screening and basic neuroscience research." Doctoral thesis, Universitat Politècnica de Catalunya, 2011. http://hdl.handle.net/10803/52810.
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En el presente trabajo, utilizamos técnicas de microfabricación, simulaciones
numéricas, experimentos de electrofisiología para explorar la viabilidad en me-
jorar la interface ordenador-neurona a través de microcanales, y la biofísica para
la generación de señales en los dispositivos con microcanales. También demos-
tramos que los microcanales pueden ser usados como una técnica prometedora
con alto rendimiento en el muestreo automático de canales iónicos a nivel subce-
lular. Finalmente, se ha diseñado, fabricado y probado el micropozo-microcanal
como modificación adicional a los arreglos de multielectrodos, permitiendo una
alta ganancia en la relación señal/ ruido (en inglés Signal to Noise Ratio SNR),
y el registro de múltiples-lugares en poblaciones de baja densidad de redes neu-
ronales del hipocampo in vitro.
Primero, demostramos que son de alto rendimiento los microcanales de bajo
costo con interface neurona-electrodo, para el registro extracelular de la activi-
dad neuronal con baja complexidad, por periodos estables de larga duración y
con alta ganancia SNR.
En seguida, se realiza un estudio mediante experimentos y simulaciones nu-
méricas de la biofísica para la generación de las señales obtenidas de los dispositi-
vos con microcanales. Basados en los resultados, racionalizamos y demostramos
como es que la longitud del canal (siendo 200 μm) y la sección transversal del
microcanal (siendo 12 μm2) canaliza a los potenciales de acción para estar
dentro del rango de milivolts. A pesar del bajo grado de complexidad envuelto
en la fabricación y aplicación, los dispositivos con microcanales otorgan una sola
media de valor SNR de 101 76, lo cual es favorablemente comparable con la
SNR que se obtiene de desarrollos recientes que emplean electrodos curados con
CNT y Si-NWFETs.
Más aún, nosotros demostramos que el microcanal es una técnica promete-
dora para el alto rendimiento del muestro automático de canales iónicos a nivel
subcelular: (1) Información experimental y simulaciones numéricas sugieren que
las señales registradas sólo afectan los parches membranales localizados dentro
del microcanal o alrededor de 100 μm de las entradas del microcanal. (2) La
transferencia de masa de los componentes químicos en los microcanales fue ana-
lizada por experimentos y simulaciones FEM. Los resultados muestran que los
microcanales que contienen glía y tejido neuronal pueden funcionar como barre-
ra de fluido/química. Los componentes químicos pueden ser solamente aplicados
a diferentes compartimentos a nivel subcelular.
Finalmente, basado en simulaciones numéricas y resultados experimentales,
se propone que del micropozo-microcanal, obtenido de la modificación de MEA
(MWMC-MEA), la longitud óptima del canal debe ser 0,3 mm y la posición
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óptima del electrodo intracanal, hacia la entrada más cercana del microcanal,
debe ser 0,1 mm. Nosotros fabricamos un prototipo de MWMC-MEA, cuyo hoyo
pasante sobre las películas de Polydimethylsiloxane (PDMS) fue microtrabajado
a través de la técnica de grabados reactivos de plasma de iones. La baja densidad
del cultivo (57 neuronas /mm2) en el MWMC-MEAs permitió que las neuronas
vivieran al menos 14 días, con lo que la señal neuronal con la máxima SNR
obtenida fue de 142.
2In this present work, we used microfabrication techniques, numerical simulations, electrophysiological experiments to explore the feasibility of enhancing neuron-computer interfaces with microchannels and the biophysics of the signal generation in microchannel devices. We also demonstrate the microchannel can be used as a promising technique for high-throughput automatic ion-channel screening at subcellular level. Finally, a microwell-microchannel enhanced multielectrode array allowing high signal-to-noise ratio (SNR), multi-site recording from the low-density hippocampal neural network in vitro was designed, fabricated and tested. First, we demonstrate using microchannels as a low-cost neuron-electrode interface to support low-complexity, long-term-stable, high SNR extracellular recording of neural activity, with high-throughput potential. Next, the biophysics of the signal generation of microchannel devices was studied by experiments and numerical simulations. Based on the results, we demonstrate and rationalize how channels with a length of 200 μm and channel cross section of 12 μm2 yielded spike sizes in the millivolt range. Despite the low degree of complexity involved in their fabrication and use, microchannel devices provided a single-unit mean SNR of 101 76, which compares favourably with the SNR obtained from recent developments employing CNT-coated electrodes and Si-NWFETs. Moreover, we further demonstrate that the microchannel is a promising technique for high-throughput automatic ion-channel screening at subcellular level: (1) Experimental data and numerical simulations suggest that the recorded signals are only affected by the membrane patches located inside the microchannel or within 100 μm to the microchannel entrances. (2) The mass transfer of chemical compounds in microchannels was analyzed by experiments and FEM simulations. The results show that the microchannel threaded by glial and neural tissue can function as fluid/chemical barrier. Thus chemical compounds can be applied to different subcellular compartments exclusively. Finally, a microwell-microchannel enhanced MEA (MWMC-MEA), with the optimal channel length of 0.3 mm and the optimal intrachannel electrode position of 0.1 mm to the nearest channel entrance, was proposed based on numerical simulation and experiment results. We fabricated a prototype of the MWMCMEA, whose through-hole feature of Polydimethylsiloxane film (PDMS) was micromachined by reactive-ion etching. The low-density culture (57 neurons/mm2) were survived on the MWMC-MEAs for at least 14 days, from which the neuronal signal with the maximum SNR of 142 was obtained.
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翁瑋廷 and Wei-Ting Wong. "EPC Class-1 Generation-2 Protocol 之無線射頻辨識-數位防碰撞系統設計." 碩士, 中華大學, 1994. http://ndltd.ncl.edu.tw/cgi-bin/gs32/gsweb.cgi/login?o=dnclcdr&s=id=%22094CHPI5442005%22.&searchmode=basic.
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N'Diaye, Abdoulaye. "Streamflow generation for the Senegal River basin." Thesis, The University of Arizona, 1985. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu_e9791_1985_157_sip1_w.pdf&type=application/pdf.
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Ramphaka, Lerato Priscilla. "Integrating 3D basin modelling concept to determine source rock maturation in the F-O Gas Field, Bredasdorp Basin (offshore South Africa)." Thesis, University of the Western Cape, 2015. http://hdl.handle.net/11394/5340.
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>Magister Scientiae - MScThe burial history, thermal maturity and petroleum generation history of the F-O Gas Field, Bredasdorp Basin have been studied using 3D basin and petroleum systems modelling approach. The investigated sedimentary basin for this study evolved around mid-late Jurassic to early Cretaceous times when Southern Africa rifted from South America. The F-O field is located 40 km SE of the F-A platform which supplies gas and condensate to the PetroSA ‘Gas to Liquid’ plant located in Mossel Bay. As data integration is an integral part of the applied modelling concept, 2D seismic profile and well data (i.e. logs and reports from four drilled wells) were integrated into a 3D structural model of the basin. Four source rock intervals (three from the Early Cretaceous stages namely; Hauterivian, Barremian, Aptian and one from the Late Cretaceous Turonian stage) were incorporated into the 3D model for evaluating source rock maturation and petroleum generation potential of the F-O Gas Field. Additionally, measured present-day temperature, vitrinite reflectance, source potential data, basin burial and thermal history and timing of source rock maturation, petroleum generation and expulsion were forwardly simulated using a 3D basin modelling technique. At present-day, Turonian source rock is mainly in early oil (0.55-0.7% VRo) window, while the Aptian and Barremian source rocks are in the main oil (0.7-1.0% VRo) window, and the Hauterivian source rock is mainly in the main oil (0.7-1.0% VRo) to late oil (1.0-1.3% VRo) window. In the entire four source rock intervals the northern domain of the modelled area show low transformation, indicated by low maturity values that are attributable to less overburden thickness. Petroleum generation begins in later part of Early Cretaceous, corresponding to high heat flow and rapid subsidence/ sedimentation rates. The Barremian and Aptian source rocks are the main petroleum generators, and both shows very high expulsion efficiencies. The modelling results however indicate that the younger Aptian source rock could be regarded as the best source rock out of the four modelled source rocks in the F-O field due to its quantity (i.e. highest TOC of 3%), quality (Type II with HI values of 400) and highest remaining potential. At present-day, ~1209 Mtons of hydrocarbons were cumulatively generated and peak generation occurred at ~43 Ma with over 581 Mtons generated. Finally, the results of this study can directly be applied for play to prospect risk analysis of the F-O gas field.
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Gibson, Victoria. "Third generation CPTED? : rethinking the basis for crime prevention strategies." Thesis, Northumbria University, 2016. http://nrl.northumbria.ac.uk/27318/.
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Crime Prevention Through Environmental Design (CPTED) is a concept which has developed over the past five decades through a range of fields. It is based on the premise that modifications to the built and natural environment can reduce both crime and fear, and improve the overall quality of life. CPTED relies on the cooperation of a variety of agencies; however, research has revealed important inherent difficulties regarding multi-agency working and that current practice is neither sustainable nor does it consider social characteristics which may impact upon crime and the effectiveness of CPTED initiatives. Criticisms of diverse factors relating to CPTED have been expressed but how robust such criticisms are and if suitable resolutions exist has not been explored. Using a mixed methods approach, this PhD seeks to improve and update the CPTED concept by addressing issues of communication and collaboration between CPTED stakeholders, and suggests robust ways of enhancing the social context within CPTED planning. The research answers the following fundamental questions: what are the underlying problems of the CPTED concept and how did they come to fruition; and can the approach to CPTED planning be re-examined and updated to reduce the inherent underlying difficulties and improve the transferability and practical application of CPTED initiatives. The research highlights language and definition inconsistencies in the CPTED framework, transferability and engagement issues between CPTED stakeholders and an unestablished but vital link between CPTED and social sustainability and context. The thesis delivers three major academic contributions to new knowledge. It firmly identifies failings in the CPTED concept since its inception to present; it proposes an updated framework which is theoretically driven, and represents a holistic catchment of all CPTED knowledge; and it makes a solid link between crime prevention and the sustainable development of communities highlighting its importance for context analysis.
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Ковердюк, Віталій Валентинович. "Оптимізація процесів розподілу енергії у комплексі відновлюваних джерел енергії малої потужності з накопичувачами енергії." Master's thesis, КПІ ім. Ігоря Сікорського, 2021. https://ela.kpi.ua/handle/123456789/46818.
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Актуальність теми. Всім відомий тренд на здешевлення технологій, устаткування, що використовується у відновлюваній енергетиці. Дзеркально відбувається і здешевлення технологій для energy storage. Це пришвидшить розвиток, розбудову цих проектів, а також їх поширення.
Тому так, Україна відстала від впровадження законодавчої бази та інвестування в energy storage, але не настільки критично, як можна припустити.
Важливо зазначити, що встановлення нових генеруючих потужностей (в основному, це стосується та актуально для «зеленої» енергетики) вимагає інвестування не лише в генерацію як таку, а й у складні технології та інфраструктуру, у тому числі, в системи зберігання енергії. Проте впровадження нормативно-правового регулювання стосовно здійснення діяльності по проектуванню / будівництву / експлуатації / виведенні з експлуатації систем зберігання енергії, не вирішить проблему зношеності мереж. Питання модернізації мереж є одним з найбільш критичних питань в енергетичному секторі України, яке потребує нагального вирішення, адже близько 17% обладнання підстанцій та майже 67% ліній електропередач експлуатуються понад 40 років (згідно даних НЕК «Укренерго», вказаних у Плані розвитку системи передачі на 2020-2029 роки, що має бути затверджений НКРЕКП 13 березня).
Мета та завдання дослідження.
Метою дисертаційної роботи є: опрацювання питань щодо оптимізації процесів розподілу електроенергії у комплексі відновлюваних джерел енергії малої потужності з накопичувачами енергії.
Для досягнення зазначеної мети були поставлені та вирішені такі задачі:
- виконано аналіз поточного стану енергетичного сектора України;
- виконано аналіз джерел акумулювання для систем електропостачання;
- розглянуто доцільність встановлення енергетичних установок, які працюють з використанням відновлюваних джерел енергії;
- вирішено питання оптимального розподілу навантаження між окремими джерелами генерування енергії та системою накопичення енергії.
Об’єкт дослідження: процеси розподілу електричної енергії в системах електропостачання.
Предмет дослідження: питання щодо проблеми уточнення постановки оптимізації процесів розподілу електричної енергії в системах електропостачання з урахуванням групи чинників різного характеру та характеристик джерел/накопичувачів енергії
Методи дослідження. Основу виконаних досліджень було використано алгоритм розподілу ресурсів, який ґрунтується на методі нелокального пошуку запропонованого М.Л. Цетліним і І.М. Гельфандом та підходу Беллмана-Заде.
Практичне значення одержаних результатів.
У магістерській дисертації отримано наукові результати, що мають цінність для ринку електричної енергії, споживачів електричної енергії, споживачів – власників систем накопичення енергії.
Стартап-проєкті пропонується розробка програмного забезпечення, яке дасть змогу споживачу отримати імітацію часового графіка задля оптимального використання джерел енергії, які використовуються в енергокомплексі.Relevance of the work. There is a whole trend towards cheaper technologies, installation, how to win from new energy sources. Mirror view and cheaper technologies for energy storage. Tse sevvidshit development, rozbudovu tsikh projects, as well as їkh expansion. So, Ukraine has become a part of the legislative basis and investment in energy storage, but it is not so critical, as it can be allowed. It is important to note that the establishment of new generating pressures (in the main, it is important for the "green" energy), investment is not deprived of the generation of yak taku, but at the folding technology and infrastructure in the systems, including the energy supply. In the protest of the normative and legal regulation, one hundred percent of the efficiency of the design / maintenance / exploitation / operation of the energy saving systems, does not break the problem of aging. Nutrition of modernization one of the most critical power supply in the energy sector of Ukraine, as the demand for a major upgrade, is also close to 17% of the ownership of power stations, and even 67% of the power transmission lines are not in use 40 2020-2029 rocky, scho maє buti hardening NKREKP 13 birch). Aim and objectives of the study: Aim and objectives of the study: elaboration of issues related to the optimization of electricity distribution processes in the complex of low-power renewable energy sources with energy storage devices. To achieve this goal, the following tasks were set and solved: - analysis of the current state of the energy sector of Ukraine was performed; - analysis of storage sources for power supply systems was performed; - expediency of installation of power plants operating with the use of renewable energy sources is considered; - the issue of optimal load distribution between separate energy generation sources and energy storage system is solved. The object of the study processes of electricity distribution in power supply systems. Subject of research: optimization of electric energy distribution processes in the complex of low-power renewable energy sources with energy storage devices, taking into account a group of factors of different nature. Subject of research: optimization of electric energy distribution processes in the complex of low-power renewable energy sources with energy storage devices, taking into account a group of factors of different nature. Research methods. The basis of the research was the algorithm of resource allocation, which is based on the method of non-local search proposed by ML Tsetlin and IM Gelfand and the Bellman-Zade approach. Elements of scientific novelty of the obtained results. In the master's dissertation the scientific results which have value for the market of electric energy, consumers of electric energy, consumers - owners of systems of energy storage are received.
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Mitteff, Eric. "AUTOMATED ADAPTIVE DATA CENTER GENERATION FOR MESHLESS METHODS." Master's thesis, University of Central Florida, 2006. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2635.
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Meshless methods have recently received much attention but are yet to reach their full potential as the required problem setup (i.e. collocation point distribution) is still significant and far from automated. The distribution of points still closely resembles the nodes of finite volume-type meshes and the free parameter, c, of the radial-basis expansion functions (RBF) still must be tailored specifically to a problem. The localized meshless collocation method investigated requires a local influence region, or topology, used as the expansion medium to produce the required field derivatives. Tests have shown a regular cartesian point distribution produces optimal results, however, in order to maintain a locally cartesian point distribution a recursive quadtree scheme is herein proposed. The quadtree method allows modeling of irregular geometries and refinement of regions of interest and it lends itself for full automation, thus, reducing problem setup efforts. Furthermore, the construction of the localized expansion regions is closely tied up to the point distribution process and, hence, incorporated into the automated sequence. This also allows for the optimization of the RBF free parameter on a local basis to achieve a desired level of accuracy in the expansion. In addition, an optimized auto-segmentation process is adopted to distribute and balance the problem loads throughout a parallel computational environment while minimizing communication requirements.M.S.M.E.
Department of Mechanical, Materials and Aerospace Engineering;
Engineering and Computer Science
Mechanical Engineering
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England, Matthew Lawson. "Oil Generation, Migration and Biodegradation in the Wessex Basin (Dorset, UK)." Thesis, University of Newcastle Upon Tyne, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.512194.
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McDougall-Bagnall, Jonathan M. "Generation problems for finite groups." Thesis, University of St Andrews, 2011. http://hdl.handle.net/10023/2529.
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It can be deduced from the Burnside Basis Theorem that if G is a finite p-group with d(G)=r then given any generating set A for G there exists a subset of A of size r that generates G. We have denoted this property B. A group is said to have the basis property if all subgroups have property B. This thesis is a study into the nature of these two properties. Note all groups are finite unless stated otherwise. We begin this thesis by providing examples of groups with and without property B and several results on the structure of groups with property B, showing that under certain conditions property B is inherited by quotients. This culminates with a result which shows that groups with property B that can be expressed as direct products are exactly those arising from the Burnside Basis Theorem. We also seek to create a class of groups which have property B. We provide a method for constructing groups with property B and trivial Frattini subgroup using finite fields. We then classify all groups G where the quotient of G by the Frattini subgroup is isomorphic to this construction. We finally note that groups arising from this construction do not in general have the basis property. Finally we look at groups with the basis property. We prove that groups with the basis property are soluble and consist only of elements of prime-power order. We then exploit the classification of all such groups by Higman to provide a complete classification of groups with the basis property.
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Putaala, Heli. "Genetic basis of congenital nephrotic syndrome and generation of an animal model /." Stockholm, 2001. http://diss.kib.ki.se/2001/91-628-4788-0/.
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Sinclair, Thomas Daniel. "The generation and continued existence of overpressure in the Delaware Basin, Texas." Thesis, Durham University, 2007. http://etheses.dur.ac.uk/2289/.
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The Delaware Basin, part of the larger Permian Basin, contains important hydrocarbon plays. Permian strata contain 71% of in-place oil and 53% of in-place gas, with the remainder hosted in the Lower Palaeozoic. Excessive pore fluid pressures (up to 〜 8000 psi above hydrostatic) are found within Early Permian and Pennsylvanian strata, which account for 30-35% of the hydrocarbon producing zones. This study has utilised an array of basin analysis techniques to analyse the pressure history of the Delaware basin. To fully appreciate the geopressure history in the Delaware Basin, a rigorous quantitative approach has been applied using advanced thermochronology techniques. This has enabled for the first time an accurate burial history curve to be established for the basin. The results show that maximum burial occurred in the basin at 55 Ma as a consequence of an additional 6890 ft of Mesozoic and Cenozoic sediment. The basin then underwent two major tectonic uplift events during the Cenozoic. The Laramide orogeny (55-50 Ma) uplifted and eroded off 3890 ft of sediment, then during the Eocene and Oligocene the basin subsided and accumulated a further 600 ft of sediment. The Basin and Range event (25-10 Ma) then uplifted and tilted the basin further, eroding off 3600 ft of sediment from the centre of the basin. The new burial history curve has been integrated with wireline logs and basin modelling software to evaluate the mechanism of overpressure generation and its maintenance through geological time. This study has shown that the main mechanism for overpressure generation in the Delaware Basin was disequilibrium compaction. Analysis of the sonic log using the Equivalent Depth Method and the Eaton Ratio Method, combined with velocity I density cross-plots, indicate that compaction is driven by vertical loading, and undercompaction seen in the basin is a consequence of the sediments' inability to dewater. Basin modelling shows that it was the rapid deposition of the Permian sediments that enabled disequilibrium compaction to generate overpressure. These techniques have also shown that a secondary cause of overpressure due to unloading mechanisms (e.g. gas generation or expansion with uplift, lateral transfer and hydrocarbon buoyancy) may be occurring within localised horizons below the Wolfcampian Series. Overpressure has been maintained within the basin for more than 250 Myr. Basin modelling and wireline logs have shown that numerous intercalated tight limestones (Mississippian to Late Permian) acted as pressure seals to maintain overpressure. In addition, low permeability mudstones (l0 (^-6) mD) have contributed to the inability of the Delaware Basin to reach pressure equilibrium.
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Ginger, Robert Patrick. "A basis for computer-aided generation of design concepts for instrument systems." Thesis, City University London, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.260239.
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Eriksson, Rebecca, Lisa Olsson, and Ida Thomsson. "”Det borde liksom räcka med att man röstar” : 90-talisters attityder till ekologisk hållbar konsumtion." Thesis, Högskolan i Borås, Akademin för textil, teknik och ekonomi, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-21663.
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I denna studie presenteras forskning om 90-talisters attityder till ekologisk hållbarkonsumtion. Studien är skriven utifrån ett kvalitativt angreppssätt där datainsamlingen har skett genom två fokusgrupper, en med män och en med kvinnor. Syftet är att undersöka 90-talisters attityd till ekologisk hållbar konsumtion och besvaras genom tre frågeställningar. De två första frågeställningarna berör motiv och ansvar för ekologisk hållbar konsumtion och den tredje är en jämförelse mellan kön. Analysen grundar sig i ett teoretiskt ramverk med Schwartz grundläggande värderingar och Locus of Control. Studiens resultat visar att 90-talisters attityder till ekologisk hållbar konsumtion i allmänhet är positiv och komplex. De värderingar som framkom i diskussionerna tar uttryck i motiv som pris, smak, hälsa och omvärldsrelaterade motiv. Attityder till vem som har ansvaret till att utveckla en ekologisk hållbar konsumtion skiljer sig mellan individerna men de är överens om att situationen är komplex och svår att reda ut. Några av deltagarna vill att staten eller företagen ska ta tag i problemet medan andra anser att de själva som individer har ett stort ansvar. Vissa attityder och värderingar skiljer sig mellan männen och kvinnorna, men i bådagrupperna finns olika argument och det går inte att dra direkta slutsatser mellan könen. Gemensamt för båda grupperna är att de själva anser att de saknar kunskap om vad ekologiskhållbar konsumtion innebär. Denna studie bidrar med en viss förståelse för hur 90-talister ser på ekologisk hållbarkonsumtion och vad de anser krävs för att utveckla en hållbar konsumtion. För att få ett mergeneraliserbart resultat skulle en kvantitativ studie rekommenderas till framtida forskning.This study presents research on 90's generation’s attitudes to organic sustainable consumption. The study is written from a qualitative approach where data has been collected through two focus groups, one with men and one with women. The purpose is to examine the attitude of the 90’s generation to organic sustainable consumption and will be answered by three questions. The two first questions concerns the motivation and responsibility for organic sustainable consumption and the third is a comparison between gender. Analyzes are based on a theoretical framework with Schwartz Theory of Basic Values and Locus of Control. The results of the study shows that the attitudes to organic sustainable consumption are generally positive and complex. The values that emerged in the discussions expresses motives such as price, taste, health and environmental motives. Attitudes toward who is responsible to develop an organic sustainable consumption differs between the respondents, however they understand that the situation is complex and difficult to solve. Some of the participants believes the state or companies should deal with the problem, while some believe it is themselves as individuals who has the responsibility. Some attitudes and values differ between men and women, but there are different arguments in both groups and direct conclusions cannot be drawn between the genders. Both groups believe they have a lack of knowledge about what organic sustainable consumption means. This study contributes to a certain understanding of the 90’s generation view on sustainable consumption and what they consider necessary to develop a sustainable consumption. In order to achieve a more generalizable result, a quantitative study would be recommended for future research. This study is written in swedish.
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Alcañiz, Cosín Diego. "Implementación de células calefactoras alimentadas por microondas para mejora energética y eliminación de combustibles fósiles en procesos de calentamiento de fluidos alimentarios." Doctoral thesis, Universitat Politècnica de València, 2021. http://hdl.handle.net/10251/163249.
Full textAbstract:
[ES] Los tratamientos térmicos tienen un gran peso en la industria agroalimentaria, siendo el origen de hasta el 80% de las emisiones de CO2 generadas por este sector en algunas regiones. Por esta razón, existe un gran interés en nuevas tecnologías aplicadas a procesos térmicos que puedan alimentarse por electricidad, ya que puede provenir de fuentes de energía renovable y, por tanto, ser neutras en emisiones. En este contexto, la empresa Microbiotech S.L. ha desarrollado la tecnología de Célula Básica de Transferencia de Energía (CBTE), la cual consiste en conducir energía de microondas por un cable coaxial, de forma muy eficiente, hasta el material a calentar, y este tiene las dimensiones óptimas para absorber toda la energía y calentarse de forma homogénea. Este material es un tipo de cerámica, modificada para que absorba la energía de microondas, incrementando su temperatura rápidamente, pero manteniendo la liberación de calor lenta típica de materiales cerámicos. El objetivo de la tesis fue incrementar el estado de desarrollo de esta tecnología en su aplicación para calentar fluidos, caracterizarla más en profundidad y verificar su viabilidad para pasteurización de alimentos líquidos, independientemente de su capacidad para absorber microondas. El primer paso de la investigación se centró en hallar el material más adecuado para esta tecnología, con la premisa de elevar rápido su temperatura, y liberar el calor absorbido lentamente. Se escogió una formulación cerámica con un 50% de SiC como susceptor. Se validó su aplicación como calefactor de aire ofreciendo un 40% de ahorro en comparación con los convencionales. A continuación, tras tres ciclos de ensayo y error, se construyó un prototipo de calentador de fluidos por tecnología CBTE capaz de alcanzar temperaturas de pasteurización, funcionar de forma prolongada y ofreciendo una eficiencia energética del 45%. En tercer lugar, por medio de simulación multifísica, se simularon diversas variables del prototipo. En las simulaciones se encontró un problema de sobrecalentamiento porque, debido al patrón de circulación del fluido, parte de este permanecía más tiempo en contacto con la placa, lo cual se solucionó mediante láminas metálicas que guiaban el paso del fluido. Por último, se analizó la entropía generada por el sistema, examinando la influencia de distintos parámetros, concluyendo que la principal variable afecta al fluido a calentar. En conclusión, se ha conseguido obtener un prototipo de tecnología CBTE para calentar fluidos a temperaturas de pasteurización, se conocen los pasos para mejorarlo en futuras iteraciones gracias a las simulaciones multifísicas, y se conoce la influencia de las distintas variables en la generación de entropía.[CA] Els tractaments tèrmics tenen una gran importancia en la indústria agroalimentària, sent l'origen de fins al 80% de les emissions de CO2 generades per aquest sector en algunes regions. Per aquesta raó, hi ha un gran interès en noves tecnologies aplicades a processos tèrmics que puguin alimentar-se per electricitat, ja que pot provenir de fonts d'energia renovable i per tant, ser neutres en emissions. En aquest context, l'empresa Microbiotech S.L. ha desenvolupat la tecnologia de Cèl·lula Bàsica de Transferència d'Energia (CBTE), la qual consisteix en conduir energia de microones per un cable coaxial, de forma molt eficient, fins el material a escalfar. Aquest material és un tipus de ceràmica, modificada perquè absorbeixi l'energia de microones, incrementant la seua temperatura ràpidament, però mantenint l'alliberament de calor lenta típica de materials ceràmics. L'objectiu de la tesi va ser incrementar l'estat de desenvolupament d'aquesta tecnologia en la seua aplicació per escalfar fluids, i caracteritzar-la més en profunditat. El primer pas de la investigació es va centrar en trobar el material més adequat per a aquesta tecnologia, amb la premissa d'elevar ràpid la seua temperatura, i alliberar la calor absorbida lentament. Es va escollir una formulació ceràmica amb un 50% de SiC com susceptor. Es va validar la seua aplicació com calefactor d'aire oferint un 40% d'estalvi en comparació amb els convencionals. A continuació, després de tres cicles d'assaig i error, es va construir un prototip d'escalfador de fluids per tecnologia CBTE capaç d'assolir temperatures de pasteurització, funcionar de forma prolongada i oferint una eficiència energètica del 45%. En tercer lloc, per mitjà de simulació multifísica, es van simular diverses variables del prototip. En les simulacions es va trobar un problema de sobreescalfament perquè, a causa del patró de circulació del fluid, part d'aquest romania més temps en contacte amb la placa, la qual cosa es va solucionar mitjançant làmines metàl·liques que guiaven el pas del fluid. Finalment, es va analitzar l'entropia generada pel sistema, examinant la influència de diferents paràmetres, concloent que la principal variable es el fluid a escalfar. En conclusió, s'ha aconseguit obtenir un prototip de tecnologia CBTE per escalfar fluids, es coneixen els passos per millorar-lo en futures iteracions gràcies a les simulacions multifísicas, i es coneix la influència de les diferents variables en la generació d'entropia.
[EN] Thermal treatments have a great impact in the agri-food industry, being the origin of up to 80% of the CO2 emissions generated by this sector in some regions. For this reason, there is great interest in new technologies applied to thermal processes that can be powered by electricity, since it can come from renewable energy sources and therefore be neutral in emissions. In this context, the company Microbiotech S.L. has developed the Basic Cell of Energy Transference (BCET) technology, which consists of conducting microwave energy through a coaxial cable, very efficiently, to the material to be heated. This material is a ceramic, modified to absorb microwave energy, increasing its temperature rapidly, but maintaining the slow release of heat typical of ceramic materials. The objective of the thesis was to increase the state of development of this technology in its application to heat fluids, and to characterize it more in depth. The first step of the research focused on finding the most suitable material for this technology, with the premise of rapidly raising its temperature, and releasing the absorbed heat slowly. A ceramic formulation with 50% SiC was chosen as a susceptor. Its application as an air heater was validated, offering 40% savings compared to conventional ones. Then, after three cycles of trial and error, a prototype fluid heater was built using CBTE technology capable of reaching pasteurization temperatures, operating for a long time and offering an energy efficiency of 45%. Third, by means of multiphysics simulation, various variables of the prototype were simulated. In the simulations, an overheating problem was found because, due to the flow pattern of the fluid, part of it remained in contact with the plate for longer, which was solved by means of metal sheets that guided the passage of the fluid. Finally, the entropy generated by the system was analysed, examining the influence of different parameters, concluding that the main variable is the fluid to be heated. In conclusion, it has been possible to obtain a prototype of BCET technology to heat fluids, the steps to improve it in future iterations thanks to multiphysics simulations are known, and the influence of the different variables in the generation of entropy has been analysed.
Alcañiz Cosín, D. (2021). Implementación de células calefactoras alimentadas por microondas para mejora energética y eliminación de combustibles fósiles en procesos de calentamiento de fluidos alimentarios [Tesis doctoral]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/163249
TESIS
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Al-Arouri, Khaled R. "Petroleum geochemistry, source rock evaluation and modelling of hydrocarbon generation in the southern Taroom Trough, with particular reference to the Triassic Snake Creek Mudstone /." Title page, abstract and contents only, 1996. http://web4.library.adelaide.edu.au/theses/09PH/09pha321.pdf.
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SILVA, ROBERTO ALVES DA. "BASIS OF COMMITMENT OF GENERATION Y IN A PUBLIC COMPANY: A CASE STUDY." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2012. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=20257@1.
Full textAbstract:
Devido ao aumento de expectativa de vida, diversas gerações hoje
convivem no ambiente de trabalho. Com a entrada recente de uma nova
geração, quatro gerações podem trabalhar em uma mesma organização.
Entender quais os valores, expectativas e de que forma se cria e mantêm o
comprometimento desta nova geração, chamada comumente de Geração Y, é
importante para que as organizações possam alcançar sua missão e objetivos.
Empregados mais comprometidos tendem a se esforçar mais para alcançar suas
metas e contribuir para a viabilização dos objetivos da organização. Neste
cenário, o presente trabalho buscou entender quais são as bases do
comprometimento da geração Y em uma organização pública. Para isto, foi
realizada uma pesquisa junto a indivíduos pertencentes a esta geração, através
de um instrumento que mede as múltiplas bases do comprometimento
organizacional: a Escala de Bases do Comprometimento Organizacional
(EBACO). A escala avalia sete bases do comprometimento: afetiva; afiliativa;
obrigação em permanecer; obrigação pelo desempenho; falta de recompensas e
oportunidades; linha consistente de atividades e escassez de alternativas. O
resultado final sugere que os membros da geração Y na organização pesquisada
se comprometem mais nas bases afetiva e obrigação pelo desempenho. Nas
bases linha consistente de atividades e falta de recompensas e oportunidades o
comprometimento foi considerado abaixo da média nos padrões da escala
EBACO. As bases obrigação em permanecer, escassez de alternativas e
afiliativa foram as bases que apresentaram menor comprometimento.Due to the increasing in life expectancy, nowadays many generations share the work space. Recently, with the entrance of a new generation, four generations may work in the same company. Understanding which values, expectancies and how do we raise and keep this new generation’s (generation Y) commitment is important so that companies can reach their mission and goals. The more committed employees are the harder they try to accomplish their tasks and contribute to the company’s goals. Based on that this research project intend to understand on what grounds the generation Y’s commitment is built. For doing so individuals belonging to this specific generation wire pooled about questions related to their commitment to a public company. The questions were written based on the EBACO scale (basis scale of organizational commitment). This scale measures seven basis for commitment: affective; obligation to stay; obligation to performance; affiliative; lack of rewards and opportunities; consistent line of activity and a scarceness of alternatives. As a result, it was possible to see that individuals belonging to generation Y in the company where the research was conducted tend to be more committed on the affective and obligation to performance basis. On basis like a consistent line of activities and lack of reward the level of commitment reached below the average in EBACO’s scale patterns. The basis obligation in staying, scarceness of alternatives and affiliative were the basis where the commitment reached its lowest level.
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Leung, Hoi Yan. "Effect of herba cistanche on mitochondrial ATP generation : a pharmacological basis of 'Yang-invigoration' /." View abstract or full-text, 2006. http://library.ust.hk/cgi/db/thesis.pl?BICH%202006%20LEUNG.
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Ell, Basil [Verfasser]. "User Interfaces to the Web of Data based on Natural Language Generation / Basil Ell." Karlsruhe : KIT Scientific Publishing, 2017. http://www.ksp.kit.edu.
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Reed, Richard L. "Applications of the Karhunen-Loéve transform for basis generation in the response matrix method." Thesis, Kansas State University, 2015. http://hdl.handle.net/2097/19081.
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Master of ScienceDepartment of Mechanical and Nuclear Engineering
Jeremy A. Roberts
A novel approach based on the Karhunen-Loéve Transform (KLT) is presented for treatment of the energy variable in response matrix methods, which are based on the partitioning of global domains into independent nodes linked by approximate boundary conditions. These conditions are defined using truncated expansions of nodal boundary fluxes in each phase-space variable (i.e., space, angle, and energy). There are several ways in which to represent the dependence on these variables, each of which results in a trade-off between accuracy and speed. This work provides a method to expand in energy that can reduce the number of energy degrees of freedom needed for sub-0.1% errors in nodal fission densities by up to an order of magnitude. The Karhunen-Loéve Transform is used to generate basis sets for expansion in the energy variable that maximize the amount of physics captured by low-order moments, thus permitting low-order expansions with less error than basis sets previously studied, e.g., the Discrete Legendre Polynomials (DLP) or modified DLPs. To test these basis functions, two 1-D test problems were developed: (1) a 10-pin representation of the junction between two heterogeneous fuel assemblies, and (2) a 70-pin representation of a boiling water reactor. Each of these problems utilized two cross-section libraries based on a 44-group and 238-group structure. Furthermore, a 2-D test problem based on the C5G7 benchmark is used to show applicability to higher dimensions.
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Walinska, De Hackbeil Hanna. "The roots of phrase structure : the syntactic basis of English morphology /." Thesis, Connect to this title online; UW restricted, 1986. http://hdl.handle.net/1773/8429.
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Mert-gauthier, Esra. "Modeling Permian Petroleum System Of Northeast Netherlands: Hydrocarbon Generation And Migration." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612508/index.pdf.
Full textAbstract:
Groningen Gas Field is located within the southern part of the South Permian Basin in
the northeast Netherlands. Since several wells have been producing from the
Carboniferous-Permian Petroleum System, the field is considered as mature for
hydrocarbon exploration. More detailed work is necessary to evaluate further
exploration and development opportunities. Thus, evaluation of the subsurface has been
carried out as part of the petroleum system concept by using the basin modeling.
In this study, seismic interpretation was performed by using 3-dimensional seismic and
borehole data with Petrel software in order to understand stratigraphy and structural
settings of the area. PetroMod basin analysis software has been used for 1-dimensional
and 2-dimensional basin modeling study by integrating interpreted geophysical,
geological and geochemical data.
Results show that the most recognized traps were formed during pre-Zechstein, and the
major generation-migration and accumulation of hydrocarbon commenced during
Middle Jurassic and continues to the present time. Since the timing of main hydrocarbon
generation varies spatially and has begun after trap formation, both early and late
migration enhances the potential of the porous Upper Rotliegend reservoirs. Prospective
hydrocarbon traps may occur in the southwestern regions of the basin due to shallower
depth of burial. On the other hand, all local structural highs that formed as a result of
salt movement create potential traps in the region.
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Suren, Haktan. "Sequence capture as a tool to understand the genomic basis for adaptation in angiosperm and gymnosperm trees." Diss., Virginia Tech, 2017. http://hdl.handle.net/10919/86383.
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Forest trees represent a unique group of organisms combined with ecological and economic importance. Owing to their random mating system and widespread geographical distribution, they harbor abundance genetic variation both within and among populations. Despite their importance, research in forest trees has been underrepresented majorly due to their large and complex genome and scarce funding. However, recent climate change and other associated problems such as insect outbreaks, diseases and stress related damages have urged scientists to focus more on trees. Furthermore, the advent in high-throughput sequencing technologies have allowed trees to be sequenced and used as reference genome, which provided deeper understanding between genotype and environment. Whole genome sequencing is still not possible for organisms having large genomes including most tree species, and it is still not feasible economically for population genomic studies which require sequencing hundreds of samples. To get around this problem, genomic reduction is required. Sequence capture has been one of the genomic reduction techniques enabled studying the subset of the DNA of interest. In this paper, our primary goal is to outline challenges, provide guidance about the utility of sequence capture in trees, and to leverage such data in genome-wide association analyses to find the genetic variants that underlie complex, adaptive traits in spruce and pine, as well as poplar. Results of this research will facilitate bridging the genomic information gap between trees and other organisms. Moreover, it will provide better understanding how genetic variation governs phenotype in trees, which will facilitate both marker assisted selection for improved traits as well as provide guidance to determine forest management strategies for reforestation to mitigate the effects of climate change.Ph. D.
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Mason, Sean David. "Petroleum generation and expulsion from pressure solution structures in the Cambrian Ouldburra formation, Officer Basin /." Title page, contents and abstract only, 2001. http://web4.library.adelaide.edu.au/theses/09SB/09sbm412.pdf.
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Pinero, Pablo, Martin Bruckner, Hanspeter Wieland, Eva Pongrácz, and Stefan Giljum. "The raw material basis of global value chains: allocating environmental responsibility based on value generation." Taylor & Francis (Routledge), 2018. http://dx.doi.org/10.1080/09535314.2018.1536038.
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A new approach to allocate environmental responsibility, the "value added-based responsibility" allocation, is presented in this article. This metric allocates total environmental pressures occurring along an international supply chain to the participating sectors and countries according to the share of value added they generate within that specific supply chain. We show that - due to their position in global value chains - certain sectors (e.g. services) and countries (e.g. Germany) receive significantly greater responsibility compared to other allocation approaches. This adds a new perspective to the discussions concerning a fair distribution of mitigation costs among nations, companies and consumers.
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Shekarifard, Ali. "Evaluation of petroleum generation potential and thermal maturity of the Shemshak Group in the Alborz Basin using organic petrography, geochemistry and basin modelling." Paris 6, 2009. http://www.theses.fr/2009PA066108.
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Ritter, Daniel James. "Relationship Between Recharge, Redox Conditions, and Microbial Methane Generation in Coal Beds." Diss., The University of Arizona, 2015. http://hdl.handle.net/10150/577493.
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Natural gas is an important transitional energy source to replace more carbon intensive coal combustion in the face of climate change and increasing global energy demands. A significant proportion of natural gas reserves (~20%) were recently generated by microorganisms that degrade organic-rich formations (i.e. coal, shale, oil) in-situ to produce methane. Recent studies have shown that these microbial communities may be potentially stimulated to generate more methane to extend the lifetime (~10 years) of existing biogenic gas wells. This dissertation investigates how microbial coalbed methane (CBM) systems are impacted by geochemical conditions, microbial community composition, and groundwater recharge. The first study is a review and synthesis of existing basic research and commercial activities on enhancement of microbial CBM generation, and identification of key knowledge gaps that need to be addressed to advance stimulation efforts. The second study couples water and gas geochemistry with characterization of microbial communities in coalbeds in the Powder River Basin (PRB), Wyoming to investigate the influence of microbiology on water and gas geochemistry. Geochemistry results indicated that nutrients are likely source in situ from coal, and that all sulfate must be removed from the system before methanogenesis will commence. Increased archaeal (i.e. methanogens) diversity was observed with decreasing sulfate concentration, while sulfate reducing bacterial communities were different in wells with high sulfate concentrations (sulfate reducing conditions) when compared to wells with low sulfate concentrations (methanogenic conditions). The third study uses noble gases to constrain the residence time of groundwater associated with CBM in the PRB. Measured diffusional release rates of 4He from PRB coals were ~800 times greater than typical rates observed in sandstone or carbonate aquifers, and measured 4He values far exceeded expected values from in-situ decay of U and Th. Groundwater 4He residence times ranged from <1 to ~800 years using the measured diffusion rates versus ~130 to 190,000 years using a standard model. Coal waters with the longest residence time had the highest alkalinity concentrations, suggesting greater extents of microbial methanogenesis, although there was no relationship between groundwater "age" and methane concentrations or isotopic indicators of methanogenesis. Constraining the relationship between microbial activity (e.g. mechanisms of coal biodegradation and methane generation), environmental geochemical conditions, and groundwater flow is important to better understand subsurface hydrobiogeochemical processes and to ensure the success of future projects related to stimulation of microbial CBM.
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Wang, Connie Hou-Ning. "Agent-Based Overlapping Generations Modeling for Educational Policy Analysis." ScholarWorks, 2017. https://scholarworks.waldenu.edu/dissertations/4112.
Full textAbstract:
Educational systems are complex adaptive systems (CAS). The macroeffects of an educational policy emerge from and depend on individual students' reactions to the policy. However, educational policymakers traditionally rely on equation-based models, which are deficient in reflecting the work of microbehaviors. Using inappropriate tools to make policies may be a reason why there were many unintended educational consequences in history. A proper methodology to design and analyze policies for complex educational systems is agent-based modeling (ABM). Grounded in the theories of CAS and computational irreducibility, ABM is capable of connecting microbehaviors with macropatterns. The purpose of this study was to contribute to the application of ABM in educational policy analysis by constructing an agent-based overlapping generations model with hypothesized inputs to qualitatively represent the environment of the Taipei School District. Four research questions explored the effects of Taipei's 2016 student-assignment mechanism and its free tuition policy on educational opportunity and school quality under different assumptions of students' school-choice strategies. The simulated outputs were analyzed using descriptive statistics and paired samples t tests. The findings, which could hardly be revealed by traditional models, showed that the effects were complex and depended on students' strategies along with the number of choices students were allowed to make; the assignment outcomes for elite students were robust to the mechanism, and the free tuition policy worsened school quality. Although exploratory, these findings can serve as hypotheses and a guide for Taipei's policymakers to collect empirical data in evaluating their 2016 mechanism and tuition policy.
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Amansure, Giovanni Ricardo. "Source rock characterization of the organic rich intervals of the Taranaki Basin, Offshore New Zealand." University of the Western Cape, 2015. http://hdl.handle.net/11394/5057.
Full textAbstract:
>Magister Scientiae - MScThe Taranaki Basin is a large (ca. 330,000 km²) sedimentary basin found along the west coast of the northern island of New Zealand. The basin lies partly onshore but mostly offshore below the broad continental shelf to the west of central North Island. The Taranaki Basin is the first sedimentary basin to be explored in New Zealand and is currently New Zealand’s only hydrocarbon producing basin, with approximately 418 million barrels (MMbbl) of oil and 6190 billion cubic feet (bcf) of gas produced by the end of 2011. Most of New Zealand’s known oil and gas accumulations are geochemically typed to coaly facies of Late Cretaceous and Paleogene ages. The main objective of this thesis is to characterize the source rock quality of the organic rich intervals of the Taranaki Basin, namely, the Wainui Member of the North Cape Formation and the Rakopi Formation. The Rakopi Formation comprises terrestrially deposited coal measures, while the North Cape Formation is generally composed of marine rocks. These Formations make up the Pakawau Group. The objective will be achieved using two key methods. Firstly, the derivation of TOC logs using Passey’s log overlay method (Passey et al., 1990) and secondly, the generation of source rock quality maps (i.e. source rock richness mapping and source potential index mapping). This will integrate concepts relating to petrophysical wireline logs, seismic interpretation, core log information, geochemical analysis, depth mapping and isopach mapping. The results obtained from this study confirms the petroleum potential of the organic rich intervals of the Taranaki Basin. Using Passey’s method it was shown that excellent average percent TOC values are encountered for both the Wainui Member of the North Cape Formation and the Rakopi Formation. From source potential index mapping, it can be concluded that the Rakopi formation has a high source potential index (>1000SPI) on the continental shelf, which indicates that it has excellent potential for petroleum generation. The Wainui Member however, shows less potential for petroleum generation on the shelf, this being attributed to generally low net thicknesses on the shelf.
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Dreßler, Christian. "Herstellung, Simulation und Charakterisierung thermoelektrischer Generatoren auf Basis anisotroper Oxidmaterialien." Doctoral thesis, Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2017. http://nbn-resolving.de/urn:nbn:de:bsz:105-qucosa-227665.
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Die thermoelektrische Energiekonversion auf der Basis des Seebeck-Effekts ist eine Methode zur direkten Erzeugung elektrischer Energie aus thermischer Energie. Für die wesentlichen anwendungsrelevanten Parameter Temperaturbereich, elektrische Leistung und Herstellungskosten sind Materialauswahl und Aufbau der TEG entscheidend. In der vorliegenden Arbeit wurden erstmalig thermoelektrische Oxidkeramiken in monolithischen TEG verwendet, die auf der Grundlage des transversalen thermoelektrischen Effekts arbeiten. Die TEG wurden mit industriell skalierbaren Keramiktechnologien hergestellt, untersucht und hinsichtlich ihrer Parameter detailliert theoretisch und experimentell bewertet.
Als Modellsystem für die Materialien wurde La1-xSrxCuO4 in Kombination mit Ag bzw. Ag6Pd1 verwendet. Es konnte belegt werden, dass diese monolithischen TEG im Bereich kleiner elektrischer Leistungen eine vorteilhafte Alternative zu herkömmlichen
longitudinalen thermoelektrischen Generatoren sein können.
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Ramirez-Caro, Daniel. "Rare earth elements (REE) as geochemical clues to reconstruct hydrocarbon generation history." Thesis, Kansas State University, 2013. http://hdl.handle.net/2097/16871.
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Master of ScienceDepartment of Geology
Matthew Totten
The REE distribution patterns and total concentrations of the organic matter of the Woodford shale reveal a potential avenue to investigate hydrocarbon maturation processes in a source rock. Ten samples of the organic matter fraction and 10 samples of the silicate-carbonate fraction of the Woodford shale from north central Oklahoma were analyzed by methods developed at KSU. Thirteen oil samples from Woodford Devonian oil and Mississippian oil samples were analyzed for REE also. REE concentration levels in an average shale range from 170 ppm to 185 ppm, and concentration levels in modern day plants occur in the ppb levels. The REE concentrations in the organic matter of the Woodford Shale samples analyzed ranged from 300 to 800 ppm. The high concentrations of the REEs in the Woodford Shale, as compared to the modern-day plants, are reflections of the transformations of buried Woodford Shale organic materials in post-depositional environmental conditions with potential contributions of exchanges of REE coming from associated sediments. The distribution patterns of REEs in the organic materials normalized to PAAS (post-Archean Australian Shale) had the following significant features: (1) all but two out of the ten samples had a La-Lu trend with HREE enrichment in general, (2) all but two samples showed Ho and Tm positive enrichments, (3) only one sample had positive Eu anomalies, (4) three samples had Ce negative anomalies, although one was with a positive Ce anomaly, (5) all but three out of ten had MREE enrichment by varied degrees. It is hypothesized that Ho and Tm positive anomalies in the organic materials of the Woodford Shale are reflections of enzymic influence related to the plant physiology. Similar arguments may be made for the Eu and the Ce anomalies in the Woodford Shale organic materials. The varied MREE enrichments are likely to have been related to some phosphate mineralization events, as the Woodford Shale is well known for having abundant presence of phosphate nodules. The trend of HREE enrichment in general for the Woodford Shale organic materials can be related to inheritance from sources with REE-complexes stabilized by interaction between the metals and carbonate ligands or carboxylate ligands or both. Therefore, a reasonable suggestion about the history of the REEs in the organic materials would be that both source and burial transformation effects of the deposited organic materials in association with the inorganic constituents had an influence on the general trend and the specific trends in the distribution patterns of the REEs. This study provides a valuable insight into the understandings of the REE landscapes in the organic fraction of the Woodford Shale in northern Oklahoma, linking these understandings to the REE analysis of an oil generated from the same source bed and comparing it to oil produced from younger Mississippian oil. The information gathered from this study may ultimately prove useful to trace the chemical history of oils generated from the Woodford Shale source beds.
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Quadrante, Luís Antonio Rodrigues. "Desenvolvimento de um simulador simplificado para estudo de geração de ondas em tanques dotados de geradores segmentados." Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/3/3135/tde-12082011-111113/.
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Este trabalho trata do desenvolvimento de um simulador simplificado para auxiliar no estudo da geração de ondas regulares em tanques de provas dotados de geradores segmentados, com foco em estudos sobre o Calibrador Hidrodinâmico, tanque de provas inaugurado na Universidade de São Paulo no ano de 2010. Este simulador simplificado utiliza fontes de onda pontuais para representar cada gerador e tem como sua principal vantagem, a economia de tempo em comparação a análises do problema de contorno potencial realizadas no domínio da freqüência utilizando, por exemplo, o método dos elementos de contorno. A verificação da validade da ferramenta desenvolvida foi feita através de comparações do caso bidimensional com ensaios realizados em um canal de ondas e, no caso tridimensional, com resultados fornecidos pelo programa Wamit, o qual resolve o problema de contorno potencial. Nestas comparações, o simulador demonstrou seu potencial, atingindo bons resultados. Uma vez validada, a ferramenta foi utilizada para analisar três diferentes configurações de operação do Calibrador Hidrodinâmico que podem vir a ser implementadas no futuro. As análises mostram que nenhuma das configurações é a melhor para todas as combinações de períodos e direções de propagação nas quais o tanque pode operar e podem servir como base para a definição de um procedimento de operação que vise garantir maior flexibilidade na utilização do tanque de provas mantendo a qualidade do campo de ondas gerado para os ensaios.This work aims the development of a simplified simulator to assist the study about regular waves generation in test tanks equipped with segmented type wavemakers, focusing on the study about the Calibrador Hidrodinâmico (Hydrodynamics Calibrator), test tank inaugurated in 2010 at University of São Paulo. This simplified simulator uses punctual wave sources to represents each wavemaker end its main advantage is the computational time economy in comparison with analysis of the potential boundary problem made on frequency domain using, as example, the boundary elements method (BEM). To verify the developed tool validity, comparisons with bi-dimensional wave generation tests carried out on a flume were made. In three dimensional case, the comparisons were made with results provided by the program Wamit, which one solves the potential boundary problem. In all comparisons the results achieved were very good. Once proved the validity of simulator results, it was applied to analyze three different operational configurations of the Calibrador Hidrodinâmico, which can be implemented in future. The analysis showed that there is not a configuration with best results for all periods and propagation angles inside the tank operational limits and these results can be used to define a operation procedure that aims to ensure more flexibility on wavemakers operation to obtain the best possible wave field quality for all periods and propagation angles.
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Goddard, Jacqueline Clare. "Viability of the 'Yin-Yang grid' as a basis for future generations of atmospheric models." Thesis, University of Exeter, 2014. http://hdl.handle.net/10871/15998.
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This thesis concerns the viability of the 'Yin-Yang grid' for future generations of atmospheric models. The 'Yin-Yang grid’, is an overset grid in which two segments of the classical latitude-longitude grid, with the poles excised, are rotated relative to each other and fit together rather like the surface of a tennis ball. We investigate whether wave propagation can be accurately modelled across the overlap regions and whether transport of air mass properties, such as entropy or water content, can be modelled accurately and conservatively across the overlap regions, without significant 'grid imprinting' on the solution. The wave propagation results demonstrate that the overlapping regions support computational/spurious wave modes and methods for controlling these wave modes are discussed. Transport schemes are investigated in one dimension using the Chesshire and Henshaw conservative interpolation scheme [Chesshire and Henshaw 1984] and the new 'Zerroukat mass fixer' scheme. The Zerroukat mass fixer scheme is extended to the (two-dimensional) Yin-Yang grid. The results demonstrate that the Zerroukat mass fixer scheme is successful in conserving mass. However, the Zerroukat scheme has an effect on flux limiter schemes, overshoots can occur. The Zerroukat scheme also reduces convergence rates by 2 orders of accuracy. Therefore if 2nd order convergence is required a 4th order scheme would need to be used.
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Ell, Basil [Verfasser], and R. [Akademischer Betreuer] Studer. "User Interfaces to the Web of Data based on Natural Language Generation / Basil Ell. Betreuer: R. Studer." Karlsruhe : KIT-Bibliothek, 2015. http://d-nb.info/1097380998/34.
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Ardic, Can. "Quantitative basin modeling, hydrocarbon generation and migration history of the Moose Mountain area, Rocky Mountain foothills, Alberta." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0007/MQ34939.pdf.
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Flores, Melvin Estuardo Murray Richard M. Murray Richard M. "Real-time trajectory generation for constrained nonlinear dynamical systems using non-uniform rational B-spline basis functions /." Diss., Pasadena, Calif. : California Institute of Technology, 2008. http://resolver.caltech.edu/CaltechETD:etd-02192008-153449.
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Cooper, Jennifer Rebecca. "Igneous intrusions and thermal evolution in the Raton Basin, CO-NM contact metamorphism and coal-bed methane generation /." Diss., Columbia, Mo. : University of Missouri-Columbia, 2006. http://hdl.handle.net/10355/4606.
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Thesis (M.S.)--University of Missouri-Columbia, 2006.The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file viewed on (February 6, 2007) Includes bibliographical references.
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Agbor, Fritz Ako. "Source Rock Analysis, Thermal Maturation and Hydrocarbon Generation Modelling within the Southern Pletmos Basin, Offshore of South Africa." University of the Western Cape, 2017. http://hdl.handle.net/11394/6193.
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Magister Scientiae - MSc (Earth Science)This study is a first attempt that integrates source rock geochemical evaluation, with analytic and numerical basin-modelling techniques to identify and ascertain the present-day configuration, spatial distributions, characteristics and hydrocarbon generative potentials of existing source rocks within the southern depocenter of the relatively frontier Pletmos sub-basin. Petroleum charge within the basin is proposed to have occurred during most of the Cenozoic Era. The investigation employed a forward modelling approach whereby models were calibrated through a combination of geological and geophysical datasets from 6 wells, and constrained by vitrinite reflectance and kinetic parameters.
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Tummons, Michael A. "Testing environmental controls on methane generation during microbial degradation of coal and oil from the Cherokee basin, Kansas." Thesis, Kansas State University, 2017. http://hdl.handle.net/2097/35565.
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Master of ScienceDepartment of Geology
Matthew Kirk
Biodegradation of crude oil to methane has long been known to exist in shallow petroleum reservoirs. It is only in the past decade, however, in which the concept of in-reservoir petroleum biodegradation has changed from a model emphasizing aerobic crude-oil degradation (with oxygen delivered down from meteoric waters) to a more recent model in which crude-oil degradation is driven by anaerobic processes (methanogenic microorganisms). In this study, we examine controls on microbial conversion of crude oil and coal into methane in middle-Pennsylvanian strata in the Cherokee Basin, Kansas, USA and how access to oil or coal influence microbial communities. Specifically, we considered the following hypotheses: 1) microorganisms in the basin are capable of generating methane by degrading crude oil or coal and 2) potential controls on the rate of methane formation include microbial diversity, formation water chemistry, nutrient abundance, and carbon dioxide abundance. To test these hypotheses, we used three sets of laboratory experiments constructed of materials from the Cherokee basin, Kansas. One set tested environmental controls on methane generation from oil, another from coal, and a third was a control experiment that utilized methanogenic substrates rather than oil or coal. In the experiments with oil and coal, environmental factors tested ammonium/phosphate availability, feedlot wastewater injection, and carbon dioxide abundance. Our experiments also tested the influence of salinity, by including materials from a well producing water with relatively low salinity and a well producing water with relatively high salinity. The cultures were allowed to incubate from approximately 75 to 170 days, during which headspace of oil and coal bioreactors were sampled periodically and analyzed for methane concentrations. Post incubation analyses included microbial DNA sequencing. We determined that a higher concertation of methanogens existed in the lower salinity well, which has higher potential for practical stimulatory injection. Of methane produced, the only significant (Mann Whitney) treatment had access to oil in lower salinity formation water. Access to coal resulted in no significant results. Microbial diversity, in the form of methanogenic archaea abundance, formation water chemistry (salinity), and wastewater nutrient often correlated with increased, yet insignificant, rates of methane production, while carbon dioxide abundance showed no benefit. Of methanogenic substrates consumed, we determined that most Cherokee basin methanogens preferred methanol over hydrogen and acetate.
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Onat, Yaprak. "Database Development For Tsunami Warning System In Mediterranean Basin By Tsunami Modeling." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613328/index.pdf.
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Wider awareness, proper preparedness and effective mitigation strategies need better understanding of tsunamis and tsunami hazard assessment. Tsunami assessment study covers the exchange and enhancement of available earthquake and tsunami data, development of bathymetric and topographic data in sufficient resolution, selection of possible or credible tsunami scenarios, selection and application of the valid and verified numerical tools for tsunami generation, propagation, coastal amplification, inundation and visualization. From this point of view, this thesis deals with all these components of tsunami hazards assessment. The database of 38 different seismic sources is generated and applied to Eastern Mediterranean Basin by using numerical code called NAMI DANCE. Furthermore, the simulation results are compared and discussed. In the thesis, the difficulties in defining seismic source parameters, the effect of dip and rake (slip) angle on seismic generated tsunamis are evaluated. Moreover, the performance of the numerical code, the accuracy of results, the efficiency of the numerical methods in the application to Mediterranean Basin Tsunamis and the comparisons of simulations in nested domains for Bodrum, Kas and Iskenderun are given as case studies. According to the study, north-west and south-west of Turkey may have tsunami risk more than other regions. The maximum wave amplitudes,
which may be expected to occur near the shore, are found more than 4 m. However, maximum positive wave amplitude observed in history is approximately 8 m. The arrival time of first wave to hit the coasts vary in a range of 15 to 60 minutes depending on the closeness of the location to the sources&rsquoepicenter.
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Jones, Ralph Michael. "The depositional setting and oil generation potential of the Early Permian Vc coal seam, Patchawarra Formation, Cooper Basin, South Australia /." Title page, abstract and contents only, 2000. http://web4.library.adelaide.edu.au/theses/09SB/09sbj786.pdf.
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Nikolić, Miloš [Verfasser]. "Understanding the basis of gene regulation of common complex diseases by computational analysis of next-generation sequencing data / Miloš Nikolić." Köln : Deutsche Zentralbibliothek für Medizin, 2018. http://d-nb.info/1153217821/34.
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Cioccari, Giovani Matte. "Interpretação geoquímica e modelagem térmica na geração atípica de hidrocarbonetos: um exemplo na Formação Irati, Bacia do Paraná." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2018. http://hdl.handle.net/10183/178411.
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A avaliação da exploração de hidrocarbonetos nas bacias sedimentares brasileiras, especialmente nas paleozoicas, não pode desprezar o impacto dos eventos magmáticos. O magmatismo além das alterações nas propriedades petrofísicas das rochas também induz mudanças estruturais e estratigráficas nas bacias, atuando na formação das armadilhas, bem como formando barreiras ao fluxo de fluidos (selantes). No entanto, as rochas magmáticas podem apresentar feições estruturais e/ou texturais (tais como fraturas e vesículas) que formam um sistema permo-poroso, sendo então potenciais rochas reservatório. Contudo, é na interação com as rochas geradoras, e consequente geração de hidrocarbonetos, ou seja, na geração atípica, que as rochas magmáticas possuem um papel importante. A proposta deste estudo é analisar o processo de geração atípica de hidrocarbonetos por influência de intrusão ígnea com proposta inovadora da utilização de parâmetros orgânicos, inorgânicos e petrográficos integrados à modelagem numérica de fluxo de calor. A associação destes temas ainda é pouco empregada, mas permite discussões no tocante ao efeito térmico da intrusão ígnea na encaixante sedimentar no que diz respeito à geração de hidrocarbonetos. Como área de estudo, foram escolhidos afloramentos da Formação Irati (Membro Assistência) ao norte da Bacia do Paraná, onde as litologias típicas desta unidade (folhelhos orgânicos, margas e carbonatos) são intrudidas por soleiras ígneas.Como metodologia utilizou-se parâmetros orgânicos, inorgânicos e petrográficos para avaliar a influência térmica da soleira na rocha encaixante e determinar a auréola de contato gerada.A similação numérica unidimensional foi utilizada para entender como a mudança de parâmetros termofísicos e petrofísicos influenciam na predição do Tpeak da rocha encaixante.Os resultados de geoquímica orgânica e inorgânica sugerem que ocorrem percolações de fluidos através de células convectivas dentro rocha encaixante, gerando valores anômalos de maturação térmica e remobilizando elementos químicos. A origem destes fluidos possivelmente estaja associada às reações de evaporação da água do poro, devolatilização mineral e craqueamento térmico do querogênio causado pelo efeito térmico da intrusão ígnea. A simulação numérica mostra que o mecanismo de intrusão magmática tempo finito associado às reações de evaporação da água do poro e devolatilização mineral são elementos que devem ser considerados nas equações de dispersão de calor para correta calibragem térmica.Concluiu-se que a modelagem numérica integrada aos parâmetros orgânicos, inorgânicos e petrográficos constitui uma excelente técnica para avaliar a auréola de contato na rocha encaixante em bacias sedimentares, permitindo uma avaliação da evolução térmica mais precisa.Evaluation of the hydrocarbon exploration in the Brazilian sedimentary basins, cannot ignore the impact of the magmatic events, specifically the Paleozoic ones. The magmatism causes alterations in the petrophysical properties of the rocks. And in the basins induces structural and stratigraphic changes, that could result in the formation of traps, or working as barriers to the flow of fluids (sealants). Usually, magmatic rocks present structural and/or textured features (fractures and vesicles) that form a permo-porous system, and are thus potential reservoir rocks. However, it is in the interaction with the source rocks, and consequent generation of hydrocarbons, (atypical generation) that the magmatic rocks play an important role. In this study we will discuss about how to analyze the process of hydrocarbons atypical generation by influence of igneous intrusion with an innovative proposal of the use of organic, inorganic and petrographic parameters integrated to the numerical model of heat flow. The association of these themes is still little used, but it allows discussions the thermal effect of the igneous intrusion in the sedimentary host rock with respect to the hydrocarbon generation. Irati Formation outcrops (Assistência Member) located on the northern part of the Paraná Basin, were chosen because they are the typical lithologies of this unit (organic shales, marls and carbonates), and are intruded by igneous sills. As a methodology, organic, inorganic and petrographic parameters were used to evaluate the thermal influence of the sill in the host rock and to determine the generated contact aureole.Numerical simulation was used to understand how the change of thermophysical and petrophysical parameters influence the prediction of the host rock Tpeak.The results of organic and inorganic geochemistry suggest that fluid percolations occur through convective cells within the host rock, generating anomalous values of thermal maturation and remobilizing the chemical elements.The origin of these fluids may be associated with the pore-water evaporation, mineral devolatilization and thermal cracking of kerogen caused by the thermal effect of the igneous intrusion.The numerical simulation shows that the finite time intrusion mechanism of magma associated to the pore-water evaporation and mineral devolatilization reactions are elements that must be considered in the heat dispersion equations for the correct thermal calibration. Finally, that the numerical model integrated to the organic, inorganic and petrographic parameters constitutes an excellent technique to evaluate the contact aureole in the host rock in sedimentary basins, allowing an evaluation of the more precise thermal evolution.
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Wang, Jichun [Verfasser]. "Generation of an infectious clone of Duck Enteritis Virus (DEV) : a basis for pathogenesis studies and vectored vaccine development / Jichun Wang." Berlin : Freie Universität Berlin, 2013. http://d-nb.info/1041620780/34.
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Osborn, Stephen. "Elemental and Isotope Geochemistry of Appalachian Fluids: Constraints on Basin-Scale Brine Migration, Water-Rock Reactions, Microbial Processes, and Natural Gas Generation." Diss., The University of Arizona, 2010. http://hdl.handle.net/10150/194250.
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This study utilizes new geochemical analyses of fluids (formation water and gas) collected predominately from Devonian organic-rich shales and reservoir sandstones from the northern Appalachian Basin margin to investigate basin scale hydrologic processes, water-rock reactions, microbial activity, and natural gas generation. Elemental and isotopic composition of co-produced formation waters and natural gas show that the majority of methane in Devonian organic-rich shales and reservoir sandstones is thermogenic in origin with localized accumulations of microbial gas. Microbial methanogenesis appears to be primarily limited by redox buffered conditions favoring microbial sulfate reduction. Thermal maturity (bioavailability) of shale organic matter and the paucity of formation waters may also explain the lack of extensive microbial methane accumulations. Iodine and strontium isotopes, coupled to elemental chemistry demonstrate basin scale fluid flow and clay mineral diagenesis. Evidence for this is based on anomalously high ¹²⁹I/I values sourced from uranium deposits (fissiogenic production of ¹²⁹I) at the structural front of the Appalachian Basin. Radiogenic ⁸⁷Sr/⁸⁶Sr (up to 0.7220), and depleted boron and potassium concentrations support smectite clay diagenesis at temperatures greater than 120 °C. The development of fissiogenic ¹²⁹I as a tracer of basin scale fluid flow is a novel application of iodine isotopes provided that the sources of cosmogenic and anthropogenic ¹²⁹I are reasonably well constrained. The anomalously high ¹²⁹I/I in Appalachian Basin brines may be alternatively explained by microbial fractionation based on a correlation with decreasing δ¹³C-DIC values and decreasing sulfate concentrations in the range of sulfate reduction. These results demonstrate that the microbial fractionation of iodine isotopes may be possible and an important consideration when interpreting ¹²⁹I/I, regardless of the source of ¹²⁹I. Results from this study have important implications for understanding the controls on and origins of natural gas production in sedimentary basins; tectonically and topographically driven basin scale fluid flow, including diagenetically induced waterrock reactions and mineral ore deposition related to orogenesis; and an improvement of the use of iodine isotopes for understanding large scale fluid flow, and possibly its use as a tracer of organic matter diagenesis and the distribution of radionuclides in the environment.
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Michaelsen, Bernd Heinrich. "Organic facies and petroleum-generative potential of the Murta Member (Mooga Formation), in the Eromanga Basin, South Australia /." Title page, contents and abstract only, 1986. http://web4.library.adelaide.edu.au/theses/09SB/09sbm621.pdf.
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