Dissertations / Theses on the topic 'Synthesis of REA'
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Синотин, А. М. "Автоматизация расчётов нестационарных тепловых режимов при проектировании одноблочных радиоэлектронных аппаратов." Thesis, ХНУРЕ, 2008. http://openarchive.nure.ua/handle/document/6863.
Full textRodrigues, ?dila Priscilla Gomes. "S?ntese e caracteriza??o de ferritas de n?quel dopadas com cobalto e efeito da substitui??o nas suas propriedades magn?ticas." Universidade Federal do Rio Grande do Norte, 2014. http://repositorio.ufrn.br:8080/jspui/handle/123456789/17766.
Full textCoordena??o de Aperfei?oamento de Pessoal de N?vel Superior
The ferrite composition Ni1 - xCoxFe2O4 (0 ≤ x ≤ 0.75) were obtained by the method of microwave assisted synthesis and had their structural and magnetic properties evaluated due to the effect of the substitution of Ni by Co. The compounds were prepared: according to the concept of chemical propellants and heated in the microwave oven with power 7000kw. The synthesized material was characterized by absorption spectroscopy in the infrared (FTIR), Xray diffraction (XRD) using the Rietveld refinement, specific surface area (BET) , scanning electron microscopy (SEM) with aid of energy dispersive analysis (EDS) and magnetic measurements (MAV). The results obtained from these techniques confirmed the feasibility of the method of synthesis employed to obtain the desired spinel structure, the ferrite, nickel ferrite as for nickel doped with cobalt. The results from XRD refinement ally showed the formation of secondary phases concerning stages α - Fe2O3, FeO, (FeCo)O e Ni0. On the other hand, there is an increase in crystallite size with the increase of cobalt in systems, resulting in an increased crystallinity. The results showed that the BET systems showed a reduction in specific surface area with the increase of cobalt and from the SEM, the formation of irregular porous blocks and that the concentration of cobalt decreased the agglomerative state of the system. The magnetic ferrites studied showed different characteristics according to the amount of dopant used, ranging from a very soft magnetic material (easy magnetization and demagnetization ) - for the system without cobalt - a magnetic material with a little stiffer behavior - for systems containing cobalt. The values of the coercive field increased with the increasing growth of cobalt, and the values of saturation magnetization and remanence increased up to x = 0,25 and then reduced. The different magnetic characteristics presented by the systems according to the amount of dopant used, allows the use of these materials as intermediates magnetic
As ferritas de composi??o Ni1−xCoxFe2O4 (0≤x≤0,75) foram obtidas atrav?s do m?todo de s?ntese assistida por microondas e tiveram suas propriedades estruturais e magn?ticas avaliadas em fun??o do efeito da substitui??o do Ni pelo Co. Os compostos foram preparados de acordo com o conceito da qu?mica dos propelentes e aquecidos em forno micro-ondas com pot?ncia 7000kw. O material sintetizado foi caracterizado por espectroscopia de absor??o na regi?o do infravermelho (FTIR), difra??o de raios X (DRX), com o uso do refinamento pelo m?todo de Rietveld, ?rea superficial espec?fica (BET), microscopia eletr?nica de varredura (MEV) com aux?lio de an?lise por dispers?o de energia (EDS) e medidas magn?ticas (MAV). Os resultados obtidos, a partir destas t?cnicas confirmaram a viabilidade do m?todo de s?ntese empregado para a obten??o da estrutura espin?lio desejada, tanto para a ferrita de n?quel quanto para as ferritas de n?quel dopadas com cobalto. Os resultados do DRX, aliado ao refinamento, mostraram a forma??o de fases secund?rias tais como as fases α - Fe2O3, FeO, (FeCo)O e Ni0. Por outro lado, observou-se um aumento no tamanho do cristalito com o incremento do cobalto nos sistemas, implicando em um aumento da cristalinidade. Os resultados do BET mostraram que os sistemas apresentaram uma redu??o da ?rea superficial espec?fica com o incremento do cobalto e a partir do MEV observou-se a forma??o de blocos porosos irregulares e que o aumento da concentra??o de cobalto dimunuiu o estado de aglomera??o dos sistemas. As ferritas estudadas apresentaram caracter?sticas magn?ticas diferenciadas de acordo com a quantidade do dopante utilizado, variando de um material magn?tico bastante mole (f?cil magnetiza??o e desmagnetiza??o) - para o sistema sem cobalto - a um material magn?tico com comportamento um pouco mais duro - para os sistemas contendo cobalto. Os valores do campo coercitivo aumentaram com o crescente incremento do cobalto, e os valores de magnetiza??o de satura??o e reman?ncia aumentaram at? x=0,25 e depois reduziram. As caracter?sticas magn?ticas diferenciadas apresentadas pelos sistemas, de acordo com a quantidade de dopante utilizado, permite o uso desses materiais como magn?ticos intermedi?rios
Pedrosa, Anne Michelle Garrido. "Desenvolvimento de catalisadores bifuncionais de ?xido de zirc?nio modificado por ?xidos de tungst?nio e molibd?nio contendo platina para a rea??o de isomeriza??o de n-parafinas." Universidade Federal do Rio Grande do Norte, 2007. http://repositorio.ufrn.br:8080/jspui/handle/123456789/17802.
Full textBifunctional catalysts based on zircon oxide modified by tungsten (W = 10, 15 and 20 %) and by molybdenum oxide (Mo= 10, 15 e 20 %) containg platinum (Pt = 1%) were prepared by the polymeric precursor method. For comparison, catalysts the tungsten base was also prepared by the impregnation method. After calcinations at 600, 700 and 800 ?C, the catalysts were characterized by X-ray diffraction, fourier-transform infrared spectroscopy, thermogravimetric and differential thermal analysis, nitrogen adsorption and scanning electron microscopy. The profile of metals reduction was determined by temperature programmed reduction. The synthesized catalysts were tested in n-heptane isomerization. X-ray diffractogram of the Pt/WOx-ZrO2 and Pt/MoOx-ZrO2 catalysts revealed the presence of tetragonal ZrO2 and platinum metallic phases in all calcined samples. Diffraction peaks due WO3 and ZrO2 monoclinic also were observed in some samples of the Pt/WOx-ZrO2 catalysts. In the Pt/MoOx-ZrO2 catalysts also were observed diffraction peaks due ZrO2 monoclinic and Zr(MoO4)2 oxide. These phases contained on Pt/WOx-ZrO2 and Pt/MoOx-ZrO2 catalysts varied in accordance with the W or Mo loading and in accordance with the calcination temperature. The infrared spectra showed absorption bands due O-W-O and W=O bonds in the Pt/WOx-ZrO2 catalysts and due O-Mo-O, Mo=O and Mo-O bonds in the Pt/MoOx-ZrO2 catalysts. Specific surface area for Pt/WOx-ZrO2 catalysts varied from 30-160 m2 g-1 and for the Pt/MoOx-ZrO2 catalysts varied from 10-120 m2 g-1. The metals loading (W or Mo) and the calcination temperature influence directly in the specific surface area of the samples. The reduction profile of Pt/WOx-ZrO2 catalysts showed two peaks at lower temperatures, which are attributed to platinum reduction. The reduction of WOx species was evidenced by two reduction peak at high temperatures. In the case of Pt/MoOx-ZrO2 catalysts, the reduction profile showed three reduction events, which are attributed to reduction of MoOx species deposited on the support and in some samples one of the peak is related to the reduction of Zr(MoO4)2 oxide. Pt/WOx-ZrO2 catalysts were active in the n-heptane isomerization with high selectivity to 3-methyl-hexane, 2,3- dimethyl-pentane, 2-methyl-hexane among other branched hydrocarbons. The Pt/MoOx-ZrO2 catalysts practically didn't present activity for the n-heptane isomerization, generating mainly products originating from the catalytic cracking
Catalisadores bifuncionais a base de ?xido de zirc?nio modificado por ?xidos de tungst?nio (W = 10, 15 e 20 %) ou molibd?nio (Mo= 10, 15 e 20 %) contendo platina (Pt = 1 %) foram preparados pelo m?todo dos precursores polim?ricos. Por compara??o, catalisadores a base de tungst?nio tamb?m foram preparados pelo m?todo de impregna??o. Ap?s calcina??es a 600, 700 e 800 ?C, os catalisadores foram caracterizados por difra??o de raios-X, espectroscopia de absor??o na regi?o do infravermelho, an?lise termogravim?trica, an?lise t?rmica diferencial, adsor??o de nitrog?nio e microscopia eletr?nica de varredura. Os perfis de redu??o dos metais foram determinados por redu??o a temperatura programada. Os catalisadores sintetizados foram testados na isomeriza??o do n-heptano. Os difratogramas de raios-X dos catalisadores Pt/WOx-ZrO2 e Pt/MoOx-ZrO2 revelaram a presen?a do ZrO2 tetragonal e da platina met?lica em todas as amostras calcinadas. Picos de difra??o referentes ao WO3 e ao ZrO2 monocl?nico tamb?m foram observados em algumas das amostras dos catalisadores Pt/WOx-ZrO2. Nos catalisadores do tipo Pt/MoOx-ZrO2 tamb?m foram observados picos de difra??o referente ao ZrO2 monocl?nico e ao ?xido Zr(MoO4)2. O aparecimento destas outras fases contidas nos catalisadores Pt/WOx-ZrO2 e Pt/MoOx-ZrO2 variaram de acordo com o teor de W ou Mo e de acordo com a temperatura de calcina??o. Os espectros de absor??o na regi?o do infravermelho exibiram bandas de absor??o referentes as liga??es O-W-O e W=O nos catalisadores Pt/WOx-ZrO2 e referentes as liga??es O-Mo-O, Mo=O e Mo-O nos catalisadores Pt/MoOx-ZrO2. A ?rea superficial espec?fica dos catalisadores Pt/WOx-ZrO2 variou de 30-160 m2 g-1 e para os catalisadores do tipo Pt/MoOx-ZrO2 variou de 10-120 m2 g-1. O teor de metais (W ou Mo) e a temperatura de calcina??o exercem uma influ?ncia direta no valor da ?rea superficial espec?fica das amostras. Os perfis de redu??o dos catalisadores Pt/WOx-ZrO2 exibiram dois picos a baixas temperaturas, os quais s?o atribu?dos a redu??o da platina. A redu??o das esp?cies WOx foi evidenciada por dois picos de redu??o a altas temperaturas. No caso dos catalisadores Pt/MoOx-ZrO2, os perfis de redu??o mostram tr?s eventos de redu??o, os quais s?o atribu?dos a redu??o das esp?cies MoOx depositadas no suporte e em algumas amostras um dos picos ? relacionado com a redu??o do ?xido Zr(MoO4)2. Os catalisadores Pt/WOx-ZrO2 foram ativos para a isomeriza??o do n-heptano com alta seletividade a 3-metil-hexano, 2,3-dimetil-pentano e 2-metil-hexano entre outros hidrocarbonetos ramificados. Os catalisadores Pt/MoOx- ZrO2 praticamente n?o apresentaram atividade para a isomeriza??o do n-heptano, gerando principalmente produtos oriundos do craqueamento catalitico
Brookes, Timothy Sean. "A real-time auditory spectograph." Thesis, University of York, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.337653.
Full textBenkrid, A. "Real time TLM vocal tract modelling." Thesis, University of Nottingham, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.352958.
Full textChand, G. "Real-time digital synthesis of transient waveforms : Complex transient sound waveforms are analysed for subsequent real-time synthesis with variable parameters." Thesis, University of Bradford, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.376681.
Full textHolloway, Matthew. "Experimental study of REE carbonate and fluorocarbonate synthesis as a basis for understanding hydrothermal REE mineralisation." Thesis, University of Edinburgh, 2018. http://hdl.handle.net/1842/31162.
Full textZita, Andreas. "Computational Real-Time Sound Synthesis of Rain." Thesis, Linköping University, Department of Science and Technology, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-1830.
Full textReal-time sound synthesis in computer games using physical modeling is an area with great potential. To date, most sounds are pre-recorded to match a certain event. Instead by using a model to describe the sound producing event, a number of problems encountered when using pre-recorded sounds can be avoided. This thesis will introduce these problems and present a solution. The thesis will also evaluate one such physical model, for rain sound, and implement a real- time simulation to demonstrate the advantages of the method.
Sorensen, Matthew J. "Real-time Image Enhancement Using Texture Synthesis." Diss., CLICK HERE for online access, 2004. http://contentdm.lib.byu.edu/ETD/image/etd595.pdf.
Full textJenkins, Mark Daniel. "Synthesis and alternating automata over real time." Thesis, University of Oxford, 2012. http://ora.ox.ac.uk/objects/uuid:f37ccc5f-8ed6-4b00-b9e3-28c4bb4ec60a.
Full textFerraris, Jonathan William. "Real-time transition texture synthesis for terrains." Thesis, Bournemouth University, 2014. http://eprints.bournemouth.ac.uk/22508/.
Full textNguena-Timo, Omer. "Synthesis for a weak real-time logic." Thesis, Bordeaux 1, 2009. http://www.theses.fr/2010BOR13931/document.
Full textIn this dissertation, we consider the specification and the controller synthesis problem for real-time systems. Our models for systems are kinds of Event-recording automata. We assume that controllers observe all the events occurring in the system and can prevent occurrences of controllable events. We study Event-recording Logic (ERL). We propose new algorithms for the model-checking and the satisfiability problems of that logic. Our algorithms are similar to some algorithms proposed for the same problems in the setting of the standard $\mu$-calculus. They also correct earlier proposed algorithms. We define disjunctive normal form formulas and we show that every formula is equivalent to a formula in disjunctive normal form. Unfortunately, ERL is rather weak and can not describe some interesting real-time properties, in particular some important properties for controllers. We define a new logic that we call WT$_\mu$. The logic WT$_\mu$ is a weak real-time extension of the standard $\mu$-calculus. We present an algorithm for the model-checking problem of WT$_\mu$. We consider two fragments of WT$_\mu$ called well guarded WT$_\mu$ ($WG$-WT$_\mu$) and WT$_\mu$ for control ($C$-WT$_\mu$). We show that the satisfiability of $WG$-WT$_\mu$ is decidable if the maximal constants appearing in models are known a priori. Our algorithm allows to check whether a formula of $WG$-WT$_\mu$ has a deterministic model. The algorithm we propose to decide whether a formula of $C$-WT$_\mu$ has a model does not need to know the maximal constant used in models. All the algorithms for the satisfiability checking construct witness models. Using $C$-WT$_\mu$, we present algorithms for a centralised controller synthesis problem and a centralised $\Delta$-controller synthesis problems. The construction of witness controllers is effective. We also consider the decentralised controller synthesis problem with limited resources (the maximal constants used in controllers is known a priory) when the properties are described with $WG$-WT$_\mu$. We show that this problem is decidable and the computation of witness controllers is effective
Nilsson, Robin Lindh. "Contact Sound Synthesis in Real-time Applications." Thesis, Blekinge Tekniska Högskola, Institutionen för kreativa teknologier, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-3938.
Full textSyntetisering av ljud som uppstår när fysikobjekt kolliderar i en virtuell miljö kan ge mer dynamiska och realistiska ljudeffekter, men är krävande att beräkna. I det här examensarbetet implementerades ljudsyntes i frekvensdomänen baserat på en tidigare studie, och utvecklades sedan vidare till att utnyttja multipla trådar. Enligt mätningar i tre olika testfall kunde den multitrådade implementationen syntetisera 80% fler ljudvågor än den enkeltrådade, på en i7-processor.
Author's website: www.robinerd.com
Jackson, Marcus J. "DESIGN OF A SCREENING PROCESS FOR THE DEVELOPMENT." Master's thesis, Temple University Libraries, 2011. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/202826.
Full textM.A.
We have initiated the development of a screening platform to design a library of small molecules on the same solid support surface. This solid support surface, and the chemistry involved, can be utilized as a means of developing lead target molecules, namely ligands and catalysts. Evidence shows the successful assembly of both simple amino acids, as well as successful employment of our synthetic compounds. We support our efforts by showing compatibility for binding studies with larger macromolecules. Thus, intrigue remains by the prospects of this project. Challenges within our efforts are highlighted and emphasis is placed on presenting solutions to current issues, in order to attain further development. Notwithstanding difficulty, the desire to establish efficient processes for the discovery of lead target molecules and to ascertain the utility of our synthesized compounds, can be captured within this body of work. Lastly, the framework for continued efforts has been set to enable future progression.
Temple University--Theses
Xiao, Jiangjian. "IMAGE BASED VIEW SYNTHESIS." Doctoral diss., University of Central Florida, 2004. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3247.
Full textPh.D.
School of Computer Science
Engineering and Computer Science
Computer Science
Wu, Y. "Real-time MIMO detection : algorithm and synthesis technology." Thesis, Queen's University Belfast, 2014. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.677852.
Full textJun, Yao, and Liu Shi-yan. "Real Time Telemetry Data Synthesis with the TMS320C25." International Foundation for Telemetering, 1992. http://hdl.handle.net/10150/611931.
Full textThis paper presents the method of real time telemetry data synthesis for multi-beams and multi-receivers system in theory. For the practical implementation, we introduce a TMS320C25-based data synthesis board. Through a large number of simulating experiments, the satisfactory results are obtained, which obviously improve the performance of telemetry system. Therefore, all those technigues and results have the value of practical applications.
Beckett, Keith. "Real-time parallel SAR processing." Thesis, University of Liverpool, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.309878.
Full textKlein, Joachim. "Compositional Synthesis and Most General Controllers." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-130654.
Full textCassell, Ryan T. "Synthesis of a PbTx-2 photoaffinity and fluorescent probe and an alternative synthetic route to photoaffinity probes." FIU Digital Commons, 2014. http://digitalcommons.fiu.edu/etd/1612.
Full textOpie, Timothy Tristram. "Creation of a Real-Time Granular Synthesis Instrument for Live Performance." Queensland University of Technology, 2003. http://eprints.qut.edu.au/15865/.
Full textSymons, Peter Robert. "Hardware and algorithm architectures for real-time additive synthesis." Thesis, Open University, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.418683.
Full textItagaki, Takebumi. "Real-time sound synthesis on a multi-processor platform." Thesis, Durham University, 1998. http://etheses.dur.ac.uk/4890/.
Full textWoźniak, Ernest. "Model-based Synthesis of Distributed Real-time Automotive Architectures." Thesis, Paris 11, 2014. http://www.theses.fr/2014PA112145/document.
Full textHardware/software based solutions play significant role in the automotive domain. It is common that the implementation of certain functions that was done in a mechanical manner, in nowadays cars is done through the software and hardware. This tendency lead to the substantial number of functions operating as a set of software components deployed into hardware entities, i.e. Electronic Control Units (ECU). As a consequence the capacity of the overall code is estimated as tens of gigabytes and the number of ECUs reaches more than 100. Consequently the industrial state of the practice development approaches become inefficient. The objective of this thesis is to add to the current efforts trying to employ the Model Driven Engineering (MDE) in the context of the automotive SW/HW architectures design. First set of contributions relates to the guided strategies supporting the key engineering activities of the automotive methodology established by the EAST-\ADL2 language and the AUTOSAR standard. The main is the integration of the software architecture with the hardware platform. Although the amount of work on the synthesis is substantial, this thesis presents shortcomings of the existing approaches that disable them to fully support the EAST-ADL2/AUTOSAR methodology and delivers new techniques overcoming the current deficiencies. Second contribution concerns approaches for the modeling. Surprisingly the usage of general purpose modeling languages such as the SysML and MARTE although beneficial, haven’t found its way yet to be fully exploited by the automotive OEMs (Original Equipment Manufacturer). This especially relates to the modeling of the analyzable input and the optimization concerns which would enable triggering of the analysis and optimization directly from the models level. This work shows a way and defines additional concepts, necessary to construct analysis and optimization models
Berkowitz, Phillip. "A STATISTICAL APPROACH TO VIEW SYNTHESIS." Master's thesis, University of Central Florida, 2009. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2450.
Full textM.S.E.E.
School of Electrical Engineering and Computer Science
Engineering and Computer Science
Electrical Engineering MSEE
Vick, Erik. "IMPLEMENTING LEXICAL AND CREATIVE INTENTIONALITY IN SYNTHETIC PERSONALITY." Doctoral diss., University of Central Florida, 2005. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3252.
Full textPh.D.
Other
Arts and Sciences
Modeling and Simulation
Patel, Chetak. "ROOM TEMPERATURE SYNTHESIS AND SYSTEMATIC CHARACTERIZATION OF ULTRA-SMALL CERIA NANOPARTICLES." Master's thesis, University of Central Florida, 2009. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4354.
Full textM.S.
Department of Chemistry
Sciences
Industrial Chemistry MS
wei, yun. "SYNTHESIS AND CHARACTERIZATION OF POLYMER-DERIVED POROUS SICN CERAMICS." Master's thesis, University of Central Florida, 2008. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3566.
Full textM.S.
Department of Mechanical, Materials and Aerospace Engineering;
Engineering and Computer Science
Materials Science & Engr MSMSE
Rambacher, Robert William. "Pyridoimudazolium cationic dyes theory, synthesis, and sub-cellular localization /." Huntington, WV : [Marshall University Libraries], 2004. http://www.marshall.edu/etd/descript.asp?ref=163.
Full textTitle from document title page. Includes abstract. Document formatted into pages; contains viii, 79 p. including illustrations. Includes bibliographical references (p. 56).
Åsberg, Mikael. "Synthesis and Synchronization Support for Hierarchically Scheduled Real-Time Systems." Doctoral thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-23462.
Full textPop, Paul. "Analysis and synthesis of communication-intensive heterogeneous real-time systems /." Linköping : Univ, 2003. http://www.bibl.liu.se/liupubl/disp/disp2003/tek833s.pdf.
Full textTams, A. C. "Modelling intonation of read aloud speaking styles for speech synthesis." Thesis, University of Essex, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.269672.
Full textChou, Pai Hsiang. "Control composition and synthesis of distributed real-time embedded systems /." Thesis, Connect to this title online; UW restricted, 1998. http://hdl.handle.net/1773/6895.
Full textTAVARES, Eduardo Antônio Guimarães. "Software Synthesis for Energy-Constrained Hard Real-Time Embedded Systems." Universidade Federal de Pernambuco, 2009. https://repositorio.ufpe.br/handle/123456789/1403.
Full textA grande expansão do mercado de dispositivos digitais tem forçado empresas desenvolvedoras de sistemas embarcados em lidar com diversos desafios para prover sistemas complexos nesse nicho de mercado. Um dos desafios prominentes está relacionado ao consumo de energia, principalmente, devido aos seguintes fatores: (i) mobilidade; (ii) problemas ambientais; e (iii) o custo da energia. Como consequência, consideráveis esforços de pesquisa têm sido dedicados para a criação de técnicas voltadas para aumentar a economia de energia. Na última década, diversas técnicas foram desenvolvidas para reduzir o consumo de energia em sistemas embarcados. Muitos métodos lidam com gerenciamento dinâmico de energia (DPM), como, por exemplo, dynamic voltage scaling (DVS), cooperativamente com sistemas operacionais especializados, a fim de controlar o consumo de energia durante a execução do sistema. Entretanto, apesar da disponibilidade de muitos métodos de redução de consumo de energia, diversas questões estão em aberto, principalmente, no contexto de sistemas de tempo real crítico. Este trabalho propõe um método de síntese de software, o qual leva em consideração relação entre tarefas, overheads, restrições temporais e de energia. O método é composto por diversas atividades, as quais incluem: (i) medição; (ii) especificação; (iii) modelagem formal; (vi) escalonamento; e (v) geração de código. O método também é centrado no formalismo redes de Petri, o qual define uma base para geração precisa de escalas em tempo de projeto, adotando DVS para reduzir o consumo de energia. A partir de uma escala viável, um código customizado é gerado satisfazendo as restrições especificadas, e, dessa forma, garantindo previsibilidade em tempo de execução. Para lidar com a natureza estática das escalas geradas em tempo de projeto, um escalonador simples em tempo de execução é também proposto para melhorar o consumo de energia durante a execução do sistema. Diversos experimentos foram conduzidos, os quais demonstram a viabilidade da abordagem proposta para satisfazer restrições críticas de tempo e energia. Adicionalmente, um conjunto integrado de ferramentas foram desenvolvidas para automatizar algumas atividades do método de síntese de software proposto
Sil, Devika. "SYNTHESIS AND APPLICATIONS OF PLASMONIC NANOSTRUCTURES." Diss., Temple University Libraries, 2015. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/364016.
Full textPh.D.
The localized surface plasmon resonance (LSPR), arising due to the collective oscillation of free electrons in metal nanoparticles, is a sensitive probe of the nanostructure and its surrounding dielectric medium. Synthetic strategies for developing surfactant free nanoparticles using ultrafast lasers providing direct access to the metallic surface that harvest the localized surface plasmons will be discussed first followed by the applications. It is well known that the hot carriers generated as a result of plasmonic excitation can participate and catalyze chemical reactions. One such reaction is the dissociation of hydrogen. By the virtue of plasmonic excitation, an inert metal like Au can become reactive enough to support the dissociation of hydrogen at room temperature, thereby making it possible to optically detect this explosive gas. The mechanism of sensing is still not well understood. However, a hypothesis is that the dissociation of hydrogen may lead to the formation of a metastable gold hydride with optical properties distinct from the initial Au nanostructures, causing a reversible increase in transmission and blue shift in LSPR. It will also be shown that by tracking the LSPR of bare Au nanoparticles grown on a substrate, the adsorption of halide ions on Au can be detected exclusively. The shift in LSPR frequency is attributed to changes in electron density rather than the morphology of the nanostructures, which is often the case.
Temple University--Theses
Oreifej, Rashad. "SYNTHESIS OF SELF-RESETTING STAGE LOGIC PIPELINES." Master's thesis, University of Central Florida, 2006. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3572.
Full textM.S.Cp.E.
School of Electrical Engineering and Computer Science
Engineering and Computer Science
Computer Engineering
Edupuganti, Ramakrishna. "Asymmetric Synthesis of Homotropinone and Tropane Alkaloids using Enantiopure Sulfinimines and the Synthesis and Applications of Methanoprolines." Diss., Temple University Libraries, 2011. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/155171.
Full textPh.D.
The development of new methodologies for the asymmetric synthesis of homotropinone and tropane alkaloids using enantiopure sulfinimines [RS(O)N=CR1R²] is the primary objective of this thesis. In one study a four-step intramolecular Mannich cyclization cascade reaction was devised for the asymmetric synthesis of substituted homotropinone alkaloids from enantiopure sulfinimine-derived N-sulfinyl ß-amino ketone ketals. These amino ketone ketal chiral building blocks were prepared in 67-71% yields and high dr (25-14:1) by addition of the Weinreb amide enolate of N-methoxy-Nmethylacetamide to masked oxo sulfinimines (N-sulfinyl imines). Treatment of these Weinreb amides with Grignard reagents gave the N-sulfinyl ß-amino ketone ketals in 93- 95% yields without epimerization. Heating the acyclic ß-amino ketone ketals with the buffer solution NH4OAc:HOAc resulted in a one-pot 4 step intramolecular Mannich cyclization cascade reaction to give substituted homotropinones including (–)- euphococcinine and (–)-adaline in 82-90% yields. In another study a sulfinimine-derived α,ß-unsaturated pyrrolidine nitrone was utilized in the development of a Lewis acid catalyzed [3+2] nitrone cycloaddition reaction for the asymmetric synthesis of the tropane alkaloid (+)-cocaine. The masked oxo sulfinimine was treated with an excess of the sodium enolate of methyl acetate to give N-sulfinyl ß-amino ester in 87% yield and high dr (97:3). Reduction of the ester to aldehyde followed by a Horner-Wadsworth-Emmons olefination reaction afforded the α,ß-unsaturated N-sulfinyl amino acetal. Hydrolysis of the unsaturated amino acetal gave a pyrrolidine, which was selectively oxidized to the pyrrolidine nitrone. The nitrone on heating with the Lewis acid Al(O-t-Bu)3 for 96 h underwent an intramolecular [3+2] cycloaddition to give a tricyclic isoxazolidine, which was transformed into (+)-cocaine in three steps 25% overall yield. This 9 step, 25% overall yield synthesis of (S)-(+)-cocaine from the masked oxo sulfinimine is the most efficient enantioselective route to cocaine from acyclic starting materials. This new methodology is adaptable to the preparation of various cocaine analogs including the first cocaine C-1 analogs. In other studies conformationally constrained novel pyrrolidine analogs (methanopyrrolidines) were synthesized stereoselectively to study the substituent (H, OH, or F) effect on amide conformational preferences. A nucleophilic displacement synthetic route was devised to prepare highly functionalized 5(6)-anti-substituted-methanopyrrolidines from N-benzyl-2-azabicyclo[2.1.1]hexylbromide(s) intermediates with the aid of neighboring group participation. These methanopyrrolidines were then transformed to constrained proline analogs (methanoprolines) to evaluate the impact of proline ring pucker on amide conformations. An α-methoxycarbonyl group was introduced in methanopyrrolidines by treating tert-butoxycarbonyl protected methanopyrrolidines with s-BuLi and quenching with various electrophiles such as CO2, DMF or ClCO2Me. Amide trans-cis conformational preferences (Ktrans/cis) of N-acetyl-methanopyrrolidines and N-acetyl-methanoprolines were determined in various solvents such as CDCl3 and D2O using NMR techniques, including NOE. The small trans amide preference for substituted fluoro- and hydroxy-methanopyrrolidines shows that it is the interaction of the !-methyl ester group and the amide moiety of the methanoprolines that plays a major role in determining amide conformational preferences. The gamma-substituent effect is primarily related to ring pucker and a resultant enhancement of the interaction between the amide carbonyl oxygen and ester carbonyl carbon. The results are relevant to the conformational stability of collagen and protein engineering.
Temple University--Theses
Rai, Prabin. "Design and Synthesis of Fluorescent Probes." Kent State University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=kent1375091914.
Full textYildiz, Mursel. "User Directed View Synthesis On Omap Processors." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12610682/index.pdf.
Full texts view point choice and using image frames with corresponding depth maps obtained from 2 different cameras, of which positions on coordinate system is known. User&rsquo
s view point choice is restricted to the area between right, and left cameras. Occlusion handling methods for image rendering systems is explored and discussed together with frame enhancement techniques. Median filtering is studied for multicolor image frames and post processing methods are discussed for image enhancement at the end of rendering algorithm. In this thesis, OMAP3530 microprocessor is used as the main processor which processes suggested rendering algorithm with occlusion handling and frame enhancement. proposed algorithms are implemented on DSP core and ARM cores of OMAP3530 separately and their performances are evaluated through experiments. Embedded Linux (Kernel-2.6.22) is run as the operating system for applications. Driver usage together with devices for Linux embedded operating system is explored and studied. 3 boards are used for the realization of proposed system. OMAP35x EVM board from Mistral Solutions Company is used for processor utilization, high resolution LCD utilization, system monitoring, user interface and communication purposes. Two daughter cards are designed for user view point determination. First daughter card handles communication process with EVM board and calculates view point according to input from second daughter card with single axis response GYRO sensor (ADIS16060). Spartan®
-3A DSP FPGA family is utilized in this system for view point determination. DSP slices that are hardly present inside gate arrays of this FPGA family are utilized and their performance is studied. Asynchronous memory interface, i2c bus interface, SPI interface are studied and implemented on FPGA.
Crews, Everett III. "Retroaldo-trapping reactions of [beta]-hydroxy-[alpha]-phenylsulfenyl cyclohexanone and decalone derivatives and the total synthesis of the California red scale sex pheromone." Diss., Georgia Institute of Technology, 1985. http://hdl.handle.net/1853/27404.
Full textSankur, Ocan. "Robustness in timed automata : analysis, synthesis, implementation." Phd thesis, École normale supérieure de Cachan - ENS Cachan, 2013. http://tel.archives-ouvertes.fr/tel-00910333.
Full textKokkonda, Praveen. "TOTAL SYNTHESIS OF STRYCHNOS AND ASPIDOSPERMATAN ALKALOIDS." Diss., Temple University Libraries, 2017. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/435652.
Full textPh.D.
The Strychnos class of indole alkaloids contain a pyrrolo[2,3-d]carbazole ABCE tetracyclic framework. The second-generation ABCE tetracycle approach was employed in the total synthesis of (±)-20-epi-lochneridine and progress toward total synthesis of (±)-alstolucine B. The second-generation approach featured Mitsunobu activation of the hydroxyethyl group in a gramine intermediate followed by intramolecular aza-Baylis-Hillman reaction. The substrate for hydroboration was redesigned to (±)-18-desmethyl akuammicine (1,1-disubstituted double bond), since the hydroboration of trisubstituted alkenes afforded tertiary alcohol via Markovnikov addition. The key steps were n-Bu3SnH mediated cyclization reaction to accomplish D-ring, tert-butyl hypochlorite indoline oxidation, and anti-Markovnikov hydroboration to introduce a primary alcohol. The total syntheses of Strychnos-Strychnos type bis-indole alkaloids (−)-leucoridine A and C were accomplished from the biomimetic dimerization of (−)-dihydrovalparicine. En route to (−)-dihydrovialparicine, known alkaloids (+)-geissoschizoline and (−)-dehydrogeissoschizoline were also prepared from commercially available N-tosyl indole 3-carboxaldehyde. Key steps consisted of an in situ dimerization of (−)-dihydrovalparicine from (−)-1, 2-dehydrogeissoschizoline with trifluoroacetic acid in the presence of 4 Å molecular sieves. Acid mediated ring-opening of the indolenine in (−)-leucoridine A to afford (−)-leucoridine C. DFT calculations were employed to elucidate the mechanism of dimerization, which suggested that a stepwise aza-Michael/spirocyclization sequence was preferred over the alternate hetero Diels-Alder cycloaddition reaction. A novel domino Michael/Mannich [4+2] annulation method was applied for concise total synthesis of Aspidospermatan alkaloids (+)-20-epi-condyfoline and progress toward the total synthesis of (+)-condyfoline. The additional key steps consisted of a LiHMDS mediated cyclization to form D-ring, dimethyl(methylthio)sulfonium tetrafluoroborate (DMTSF) mediated spirocyclization to form pentacyclic thioether and indoline oxidation with MnO2.
Temple University--Theses
Qiu, Shipeng. "SYNTHESIS, PROCESSING AND CHARACTERIZATION OF NANOCRYSTALLINE TITANIUM DIOXIDE." Master's thesis, University of Central Florida, 2006. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3591.
Full textM.S.M.S.E.
Department of Mechanical, Materials and Aerospace Engineering;
Engineering and Computer Science
Materials Science and Engineering
Rhoden, Stephen. "SYNTHESIS OF NOVEL AZIRIDINE DERIVATIVES OF PODOCARPIC ACID." Master's thesis, University of Central Florida, 2007. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3569.
Full textM.S.
Department of Chemistry
Sciences
Industrial Chemistry MS
Lawal, Najeem. "Memory Synthesis for FPGA Implementation of Real-Time Video Processing Systems." Doctoral thesis, Mittuniversitetet, Institutionen för informationsteknologi och medier, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-7697.
Full textElectronics design division
Sensible Things that Communicate
Lawal, Najeem. "Memory Synthesis for FPGA Implementation of Real-Time Video Processing Systems." Licentiate thesis, Mid Sweden University, Department of Information Technology and Media, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-7696.
Full textIn this thesis, both a method and a tool to enable efficient memory synthesis for real-time video processing systems on field programmable logic array are presented. In real-time video processing system (RTVPS), a set of operations are repetitively performed on every image frame in a video stream. These operations are usually computationally intensive and, depending on the video resolution, can also be very data transfer dominated. These operations, which often require data from several consecutive frames and many rows of data within each frame, must be performed accurately and under real-time constraints as the results greatly affect the accuracy of application. Application domains of these systems include object recognition, object tracking and surveillance.
Developments in field programmable gate array (FPGA) have been the motivation for choosing them as the platform for implementing RTVPS. Essential logic resources required in RTVPS operation are currently available optimized and embedded in modern FPGAs. One such resource is the embedded memory used for data buffering during real-time video processing. Each data buffer corresponds to a row of pixels in a video frame, which is allocated using a synthesis tool that performs the mapping of buffers to embedded memories. This approach has been investigated and proven to be inefficient. An efficient alternative employing resource sharing and allocation width pipelining will be discussed in this thesis.
A method for the optimal use of these embedded memories and, additionally, a tool supporting automatic generation of hardware descriptions language (HDL) codes for the synthesis of the memories according to the developed method are the main focus of this thesis. This method consists of the memory architecture, allocation and addressing. The central objective of this method is the optimal use of embedded memories in the process of buffering data on-chip for an RVTPS operation. The developed software tool is an environment for generating HDL codes implementing the memory sub-components.
The tool integrates with the Interface and Memory Modelling (IMEM) tools in such a way that the IMEM’s output - the memory requirements of a RTVPS - is imported and processed in order to generate the HDL codes. IMEM is based on the philosophy that the memory requirements of an RTVPS can be modelled and synthesized separately from the development of the core RTVPS algorithm thus freeing the designer to focus on the development of the algorithm while relying on IMEM for the implementation of memory sub-components.
Sensible Things That Communicate
Keates, Adam. "The design and synthesis of near infra-red absorbing inorganic pigments." Thesis, University of Southampton, 2015. https://eprints.soton.ac.uk/380915/.
Full textSong, Zhuoyue. "Robust analysis and synthesis for uncertain negative-imaginary systems." Thesis, University of Manchester, 2011. https://www.research.manchester.ac.uk/portal/en/theses/robust-analysis-and-synthesis-for-uncertain-negativeimaginary-systems(9de4af43-983c-42a2-bafe-062970a738be).html.
Full textHaft, Marcel. "Synthese intermetallischer Nanostrukturen in Kohlenstoffnanoröhren." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-222909.
Full textLundmark, Lukas. "Synthetic Meta-Learning: : Learning to learn real-world tasks with synthetic data." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-264919.
Full textMetainlärning är en metodik inom maskininlärning som gör det möjligt att lära en modell nya uppgifter med endast en handfull mängd träningsexempel. Metainlärning kräver dock en stor mängd träningsdata under själva metaträningsfasen, vilket begränsar de domäner där metodiken kan användas. Detta examensarbete utreder huruvida syntetisk bilddata, som genererats med hjälp av en simulator, kan ersätta verklig bilddata under metainlärningsfasen. Metoden har utvärderats på militär fordonsklassificering. Resultaten visar att för bildklassificering med 1–10 träningsexempel per klass kan en modell metainlärd med syntetisk data närma sig prestandan hos en modell metainlärd med riktig data. Resultaten visar även att små ändringar i genereringsprocessen, exempelvis graden av slumpmässigt ljus, har en stor inverkan på den slutgiltiga prestandan, vilket ger hopp om att ytterligare finjustering av genereringsprocessen kan resultera i ännu fler prestandaförbättringar.