Дисертації з теми "CHP model"
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Brofman, Eduardo Gus. "Estudo de cogeração em hotéis." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2014. http://hdl.handle.net/10183/108526.
Повний текст джерелаThis work is a study of the application of a CHP (Combined Heat and Power) system in hotels built in the city of Porto Alegre, RS, Brazil. This system was analyzed from an economic and energetic point of view. The economic matter on its viability perspective was determined through quantitative methods, in this case, with the focus on the time frame for the investment's return. For the energetic analysis, a annual energy consumption and demand study was performed utilizing a whole-building energy model with computer simulation. The chosen software was EnergyPlus. The analyses, energetic and economic, were performed through a comparison between the hotel without the CHP system and with the CHP system. The hypothetic simulated hotel was determined by a data survey on the energetic performance of hotels build in Porto Alegre. In addition to the energetic and economic studies, some parametric variations to the hotel were made to include a series of possible scenarios and check their economic viability. It was observed that the CHP can provide some operational cost reductions even without presenting a lower annual energetic consumption. In some scenarios, the time to return the investment showed figures lower than six years, being considered a good investment option.
Franceschin, Giada. "BIOETHANOL: A CONTRIBUTION TO BRIDGE THE GAP BETWEEN FIRST AND SECOND GENERATION PROCESSES." Doctoral thesis, Università degli studi di Padova, 2010. http://hdl.handle.net/11577/3427333.
Повний текст джерелаA causa del prezzo altalenante del petrolio, del consistente impatto ambientale provocato dal massiccio utilizzo di combustibili fossili e della sempre più concreta possibilità che queste fonti di energia stiano per esaurirsi, negli ultimi anni si è rinnovato l'interesse per la questione dell’approvvigionamento energetico. Le previsioni riguardo all’anno in cui si presenterà il picco di Hubbert (il punto di produzione massima, oltre il quale la produzione del petrolio può soltanto diminuire) sono soggette a incertezze derivanti dalle diverse assunzioni sull’aumento della popolazione mondiale, il consumo pro capite e le politiche energetiche adottate dai diversi Paesi, ma la necessità di cercare al più presto un’alternativa ai combustibili fossili è un dato di fatto. Cercare di sostituire, almeno in parte, i prodotti di origine fossile con altri basati su risorse di tipo rinnovabile può essere la soluzione a breve e medio periodo per ridurre la dipendenza dal petrolio ed evitare una crisi economica dalle conseguenze imprevedibili. Il problema energetico riguarda in particolare la crescita repentina della richiesta di prodotti petroliferi, per il settore dei trasporti, che si è ulteriormente aggravata con l’ingresso massiccio di Paesi emergenti, come Cina e India, nel mercato internazionale del greggio. Infatti, mentre per sopperire al fabbisogno di elettricità e calore esistono già alternative tecnologiche (come l’energia eolica, solare, geotermica e le biomasse), per il problema dei carburanti per autotrasporto la scelta si fa più ristretta a causa della necessità di disporre di un combustibile fluido che abbia un’alta densità energetica. Se poi si cerca un’alternativa a breve termine che permetta di mantenere l’attuale struttura logistica così come di utilizzare la tecnologia esistente, le possibilità si restringono ulteriormente. Bioetanolo e biodiesel sono i candidati più probabili a sostituire benzina e gasolio essenzialmente perché possono essere utilizzati nei motori attualmente disponibili e perché i processi di produzione sono già ben conosciuti. Il costo del biodiesel rappresenta il maggior ostacolo alla sua commercializzazione ed è principalmente dovuto al fatto che gli oli vegetali, utilizzati come materie prime, sono molto costosi. L’impiego di oli di scarto come materia prima, la possibilità di ottenere processi di trans esterificazione continui e il recupero di glicerolo con un elevato grado di purezza sono i primi passi da considerare per superare il problema. Ma un altro ostacolo ben più grave alla larga diffusione del biodiesel è la bassa produttività di oli vegetali per ettaro. Se si volesse sostituire anche solo il 5.75% dei 49.1 milioni di tonnellate equivalenti di petrolio che sono annualmente consumate in Italia come combustibile bisognerebbe convertire a coltivazioni energetiche almeno 3.2 milioni di ettari di terreno coltivato (Russi, 2008). Un altro problema da risolvere sarebbe lo smaltimento dei 0.4 milioni di tonnellate di glicerina prodotte. Le microalghe appaiono essere le sole specie vegetali potenzialmente in grado di sostituire una fetta importante del combustibile fossile, ma la loro produzione su larga scala non è ancora stata ottenuta con rese soddisfacenti. Il bioetanolo è l’altro principale candidato per la sostituzione della benzina. Al giorno d’oggi il bioetanolo di prima generazione (ottenuto da mais e canna da zucchero) è caratterizzato da un mercato maturo e tecnologie conosciute, ed è infatti il biocarburante maggiormente prodotto su scala mondiale. In particolare, l’etanolo ottenuto a partire da canna da zucchero, è economicamente vantaggioso (il costo di produzione si aggira sui 0.22 $/L) ed ha rese elevate. La canna da zucchero, però, cresce solamente in climi tropicali o sub tropicali e necessita di almeno 600 mm di precipitazioni annue. Di conseguenza in paesi come gli Stati Uniti e l’Europa tale materia prima non può essere presa in considerazione (The Economist, 2007). In questi casi il bioetanolo è ottenuto a partire dal mais ma, a causa del più complesso processo produttivo e del maggior costo della materia prima, il costo di produzione è maggiore del 30%. Il bioetanolo prodotto da mais ha svolto e sta svolgendo un ruolo sicuramente molto importante nell’aprire la strada verso i biocombustibili, ma non può essere considerato la soluzione né a lungo né a medio termine per le ragioni già citate, e soprattutto per questioni di natura etica derivanti dal fatto di utilizzare una risorsa alimentare per fini energetici. Il bioetanolo di seconda generazione sembrerebbe l’unica soluzione in grado di superare il problema. In questo caso le materie prime utilizzate possono essere, infatti, scarti dell’industria agro forestale, del legno e della carta, oppure possono essere ottenute tramite culture marginali in grado di crescere in terreni non adatti alle altre culture e con una quantità di acqua ridotta (Detchon et al., 2005). Le materie primi non sono in competizione con l’industria alimentare; e il processo di produzione, nel complesso, produce meno anidride carbonica dei processi di prima generazione (Deurwaarder, 2005). Sfortunatamente, sebbene il bioetanolo da materiali lignocellulosici stia catalizzando l’attenzione sia della ricerca sia delle politiche di molti paesi, il suo sviluppo su scala industriale non è ancora avvenuto. Al momento il problema principale è l’alto costo di produzione causato principalmente dall’elevato costo degli enzimi utilizzati nel processo (Balat and Balat, 2009). Il grande interesse da parte della comunità scientifica internazionale per la questione energetica e la conclusione che il bioetanolo nel breve periodo è uno dei candidati più probabili per la parziale sostituzione dei combustibili fossili sono state le ragioni che hanno portato allo sviluppo di questa tesi. Considerando che il bioetanolo da canna da zucchero è già economico ed il processo già ampiamente ottimizzato, l’attenzione è stata rivolta alla produzione di etanolo da mais e da materiali lignocellulosici. Lo scopo è stato quello di studiare i processi produttivi, focalizzando l’attenzione sugli aspetti che limitano una produzione economica nel primo caso e la diffusione su scala industriale nel secondo. Nel Capitolo 1 i due processi produttivi sono presentati assieme alle innovazioni apportate negli ultimi anni e lo stato dell’arte. Nel Capitolo 2 un tipico impianto di prima generazione è presentato in dettaglio, grazie ai risultati ottenuti dalla simulazione di processo con il software Aspen PlusTM. Una volta sviluppato il modello, l’impianto è stato ottimizzato a livello energetico e si sono eseguite alcune analisi di sensitività. In particolare si è esaminata la possibile influenza delle future innovazioni (mais con un contenuto più elevato in amido e lieviti maggiormente resistenti ad alte concentrazioni di etanolo) sulle prestazioni del processo. Considerazioni di tipo economico, ottenute grazie ai risultati delle simulazioni, hanno permesso di individuare il costo del mais come maggiore contributo al costo di produzione finale (68.8%), seguito dalle richieste energetiche del processo (16.2%). Considerata l’impossibilità di agire sul costo del mais che segue regole di mercato, si è focalizzata l’attenzione sulla possibilità di ridurre le richieste energetiche del processo, in particolare quelle della distillazione. L’analisi bibliografica presentata nel Capitolo 3 ha permesso di individuare nell’estrazione dell’etanolo mediante CO2 supercritica una possibile alternativa alla distillazione tradizionale. L’azeotropo acqua-etanolo può, infatti, essere eliminato in presenza di CO2 supercritica, e di conseguenza il bioetanolo anidro potrebbe essere ottenuto mediante un solo passaggio. A seguito dell’implementazione dell’equilibrio ternario nel software Aspen PlusTM l’estrazione supercritica è stata integrata nel processo di prima generazione. I risultati delle simulazioni e l’analisi economica presentati nel Capitolo 4 hanno portato alla conclusione che tale soluzione, sebbene presentata in letteratura come valida alternativa alla distillazione, sia svantaggiosa a causa dell’alto investimento di capitale richiesto e dei costi operativi elevati. Nei capitoli successivi sono stati esaminati i processi di seconda generazione. Tra tutti i tipi di pretrattamento quello con acqua calda sotto pressione è stato individuato come uno dei più promettenti, ed è stato quindi stato scelto come base per il presente lavoro di ricerca. Nei processi di seconda generazione la materia prima incide in maniera assai inferiore sul costo di produzione finale, in quanto possono essere utilizzati anche materiali di scarto, per cui gli aspetti energetici assumono un’importanza maggiore. In particolare il pretrattamento con acqua calda ha il vantaggio di non utilizzare altre sostanze chimiche, ma l’acqua deve essere portata ad alta temperatura e pressione, con conseguente aumento della richiesta energetica. Nel Capitolo 5 il processo di produzione di bioetanolo da paglia è stato simulato in dettaglio giungendo a dimostrare che i residui solidi del processo sono in grado di sostenere le richieste energetiche dello stesso anche con il pretrattamento ad acqua calda. Un altro grande problema del bioetanolo di seconda generazione è la non competitività economica. Nel Capitolo 6 si è scelto di verificare l’impatto di un secondo prodotto ad alto valore sulla profittabilità dell’intero processo. I risultati dell’analisi tecnoeconomica sulla contemporanea produzione di bioetanolo (dagli zuccheri a sei atomi di carbonio) e xilitolo (dallo xilosio) hanno dimostrato che anche impianti di media taglia possono diventare competitivi se viene considerata questa opzione. Nei Capitoli 7 e 8 sono presentati i risultati sperimentali ottenuti dal pretrattamento della crusca e della carta con acqua calda. In entrambi i casi è stato dimostrato che mediante pretrattamento seguito da idrolisi enzimatica è possibile ottenere zuccheri monomerici, i quali possono essere poi fermentati a etanolo. Infine nel Capitolo 9 sono proposti due semplici modelli in grado di rappresentare il pretrattamento con acqua calda in un reattore semi continuo. Tali modelli sono in grado di riprodurre quantitativamente l’andamento della solubilizzazione della biomassa alle diverse temperature, prevedere le concentrazioni di zuccheri monometrici e dei prodotti di degradazione.
Horák, Jakub. "Moderní bioplynová stanice jako součást „Smart Regions“." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-232158.
Повний текст джерелаBoehnke, Jasper. "Business models for Micro CHP in residential buildings." kostenfrei, 2007. http://www.unisg.ch/www/edis.nsf/wwwDisplayIdentifier/3375.
Повний текст джерелаRuthberg, Richard, and Sebastian Wogenius. "Stochastic Modeling of Electricity Prices and the Impact on Balancing Power Investments." Thesis, KTH, Industriell ekonomi och organisation (Inst.), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-192111.
Повний текст джерелаI takt med att fler intermittenta förnyelsebara energikällor tillför el i dagens energisystem, blir också balanskraftens roll i dessa system allt viktigare. Vidare så har en ökning av andelen intermittenta förnyelsebara energikällor även effekten att de bidrar till lägre men också mer volatila elpriser. Därmed är även investeringar i balanskraft kopplade till stora risker med avseende på förväntade vinster, vilket gör att en god representation av elpriser är central vid investeringsbeslut. Vi föreslår en stokastisk flerfaktormodell för att simulera den långsiktiga dynamiken i elpriser som bas för värdering av generatortillgångar. Mer specifikt används modellen till att utvärdera effekten av elprisers dynamik på investeringsbeslut med avseende på balanskraft, där ett kraftvärmeverk studeras i detalj. Eftersom huvudmålet med ramverket är att skapa en långsiktig representation av elpriser så att deras fördelningsmässiga karakteristika bevaras, vilket i litteraturen citeras som regression mot medelvärde, säsongsvariationer, hög volatilitet och spikar, så utvärderas modellen i termer av årlig prisvaraktighet som beskriver fördelningen av elpriser över tid. Kärnan i ramverket utgår från Pilipovic-modellen av råvarupriser, men där vi utvecklar antaganden i ett flerfaktorramverk genom att lägga till en länkfunktion till tillgång- och efterfrågan på el samt utomhustemperatur. Vid användande av modellen som ett sätt att representera framtida priser, fås en maximal över- och underprediktion av prisvaraktighet om 9 procent, ett resultat som är bättre än det som ges av enklare modellering såsom säsongsprofiler eller enkla medelvärdesestimat som inte tar hänsyn till elprisernas fulla karakteristika. Till sist visar vi med modellens olika komponenter att variationer i elpriser, och därmed antaganden som används i långsiktig modellering, har stor betydelse med avseende på investeringsbeslut i balanskraft. Det realiserade värdet av flexibiliteten att producera el för ett kraftvärmeverk beräknas, vilket ger en värdering nära faktiska realiserade värden baserade på historiska priser och som enklare modeller inte kan konkurrera med. Slutligen visar detta också att inkluderandet av icke-konstant volatilitet och spikkarakteristika i investeringsbeslut ger ett högre förväntat värde av tillgångar som kan producera balanskraft, såsom kraftvärmeverk.
Hasasneh, Nabil M. "Chip multi-processors using a micro-threaded model." Thesis, University of Hull, 2006. http://hydra.hull.ac.uk/resources/hull:13609.
Повний текст джерелаZhou, Feng. "Contaminated Chi-square Modeling and Its Application in Microarray Data Analysis." UKnowledge, 2014. http://uknowledge.uky.edu/statistics_etds/7.
Повний текст джерелаDyer, Nigel. "Informative sequence-based models for fragment distributions in ChIP-seq, RNA-seq and ChIP-chip data." Thesis, University of Warwick, 2011. http://wrap.warwick.ac.uk/49963/.
Повний текст джерелаRocha, Erika da Justa Teixeira. "âModelagem da IntrusÃo Salina Utilizando Analise de Sensitividade Adjunta â Estudo de Caso: Cap-Bon/Tunisiaâ." Universidade Federal do CearÃ, 2011. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=6526.
Повний текст джерелаNos dias atuais a Ãgua se constitui em um bem natural que limita o desenvolvimento socioeconÃmico e, atà mesmo, a subsistÃncia da populaÃÃo. Como tentativa de minimizar o problema da escassez de Ãgua tem-se utilizado a explotaÃÃo da Ãgua subterrÃnea. Entretanto, esse crescimento da utilizaÃÃo de Ãguas subterrÃneas foi feito de forma desordenada e com a construÃÃo inadequada de poÃos. Essa prÃtica acabou por colocar em risco a qualidade das Ãguas subterrÃneas. Assim, a gestÃo dos recursos hÃdricos subterrÃneos tem se tornado um grande desafio. Essa tese propÃe o desenvolvimento um modelo para a simulaÃÃo de fluxo hÃdrico e de transporte de massa para problemas transientes em aqÃÃferos costeiros sujeitos à intrusÃo salina, por meio do desenvolvimento de um modelo numÃrico. Em seguida à desenvolvida uma anÃlise de sensitividade com o objetivo de possibilitar, atravÃs do melhor conhecimento dos parÃmetros locais e suas influÃncias, uma melhor adequaÃÃo do modelo à realidade.
Today the water is a natural well which limits the socioeconomic development and even the subsistence of the population. An attempt to minimize the problem of water scarcity has used the farming of groundwater. However, this growth of the use of groundwater was done inappropriately and with inadequate wells construction. This practice was eventually put at risk the quality of groundwater. Thus, the management of groundwater resources has become a major challenge. This thesis proposes developing a model for the simulation of water flow and mass transport for transient problems in coastal aquifers subject to saline intrusion, through the development of a numerical model. Then we developed a sensitivity analysis with the goal of enabling through better knowledge of local parameters and their influences, a best fit of model to reality.
Ricca, Steven. "Using a one-chip microcomputer to control an automated warehouse model." Ohio : Ohio University, 1988. http://www.ohiolink.edu/etd/view.cgi?ohiou1182869918.
Повний текст джерелаSingleton, Roger. "Utilisation of chip thickness models in grinding." Thesis, University of Sheffield, 2012. http://etheses.whiterose.ac.uk/2541/.
Повний текст джерелаDou, Jialin. "A compiler cost model for speculative multithreading chip-multiprocessor architectures." Thesis, University of Edinburgh, 2006. http://hdl.handle.net/1842/24532.
Повний текст джерелаBrooks, Zachary Edward. "Mechanical Stresses on Nasal Mucosa Using Nose-On-Chip Model." Wright State University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=wright1578492176817977.
Повний текст джерелаMuncy, Jennifer V. "Predictive Failure Model for Flip Chip on Board Component Level Assemblies." Diss., Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/5131.
Повний текст джерелаZampieri, Marília. "Investigação do monitoramento metacognitivo de crianças diante de medidas de capacidades intelectuais." Universidade Federal de São Carlos, 2012. https://repositorio.ufscar.br/handle/ufscar/6027.
Повний текст джерелаFinanciadora de Estudos e Projetos
Metacognition can be defined as the knowledge people have about their own cognitive processes, which can help them plan, monitor, regulate and assess their cognitive activities. Studies in the field have produced instruments and measures designed to assess metacognitive performance, many of them based on Flavell s Model of Cognitive Monitoring andas well as Nelsons and Narens model. The present study focused on gaining a better understanding of metacognitive monitoring, which is usually assessed through judgements, which represents one way of measuring metacognition. The aim of the present study was to investigate children s metacognitive monitoring during the execution of three subtests of the BMI (Multidimensional Battery of Child Intelligence), based on the Cattell-Horn-Carroll s model of intelligence. The subtests chosen assessed quantitative knowledge, crystallized intelligence and fluid intelligence. Participants were 44 fifht-year students, and each child was individually evaluated. Following each of the subtests, children were asked to estimate their performance. Results showed that children s repertoire included metacognitive abilities, and some metacognitive monitoring rates were better for quantitative knowledge . When these abilities were compared relative to cognitive performance, those with the highest scores on the intelligence subtests demonstrated better metacognitive monitoring. These results, obtained with Brazilian children, are compared with results reported in the international literature, and the implications in terms of promoting metacognitive training are discussed.
A metacognição pode ser entendida como o conhecimento que o indivíduo possui sobre seu próprio funcionamento cognitivo, o que lhe permite planejar, monitorar, regular e avaliar suas atividades cognitivas. Estudos da área têm sido conduzidos para produzir instrumentos e medidas confiáveis do desempenho metacognitivo dos indivíduos, diversos deles tendo como referencial teórico os modelos formulados por Flavell e Nelson e Narens. Alguns destes instrumentos são escalas de autorrelato. O monitoramento metacognitivo, foco do presente estudo, é avaliado com frequência por meio dos julgamentos, que constituem outra ferramenta de avaliação da metacognição. O presente estudo teve como objetivo investigar o monitoramento metacognitivo de crianças durante a realização de três subtestes que compõem a Bateria Multidimensional de Inteligência Infantil: Desempenho em Matemática, Vocabulário Geral e Indução. O referencial teórico desta bateria é o Modelo Cattell-Horn-Carroll de inteligência e os subtestes referidos são destinados à avaliação das capacidades de conhecimento quantitativo, inteligência cristalizada e inteligência fluida, respectivamente. Participaram do estudo 44 alunos do quinto ano do Ensino Fundamental. Eles realizaram, individualmente, os três subtestes da BMI, e foram solicitados a emitir estimativas acerca de seu desempenho; estes julgamentos correspondem ao monitoramento metacognitivo. Os resultados indicaram que a amostra já apresenta habilidades de monitoramento cognitivo, e algumas medidas de monitoramento mostraram-se significativamente melhores para o subteste Desempenho em Matemática. Quando as habilidades de monitoramento foram comparadas de acordo com o desempenho cognitivo dos indivíduos, foram observados melhores índices de monitoramento metacognitivo nos indivíduos com melhor desempenho nos. Os dados são relevantes para confirmar, na população nacional, as informações da literatura internacional, e também para discutir a importância do incentivo e estímulo ao treinamento das habilidades metacognitivas.
Alvarez, Gustavo Adolfo Patiño. "Caracterização analítica de carga de trabalho baseada em cenários de aplicações multimídia." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/3/3140/tde-26072013-171107/.
Повний текст джерелаClassical methods for performance analysis of Multiprocessor System-on-chip (MPSoCs) are usually described in terms of Worst-Case Execution Times (WCET) of the executed tasks. Nevertheless, in real-world applications the running time of tasks varies due to different input events that trigger the system, imposing a different workload on the system resources. Usually, a workload model is a part of a performance model used to evaluate the performance of a system. How good is a workload model largely determines the quality of design solutions and the accuracy of performance estimations based on it. This thesis addresses the problem of modeling the workload for the design of real-time systems which functionality involves multimedia streams processing, i.e, data streams representing audio, images or video. The workload modeling problem is addressed from the assumption that an accurate characterization of timing behavior of real-time embedded software enables the designer to identify several variable execution requirements that the individual operation of the software tasks and the overall execution of the application will present to the several system resources of an architecture, in design phase. The software task characterization was defined from a timing analysis of the source code in order to identify the multiple operating modes the code can exhibit within a processor. This characterization is done by performing a static path analysis on the code, so that for each given path the worst-case and bestcase execution times (WCET and BCET) were estimated, based on a microarchitectural modeling of an on-chip processor. Thus, every execution path of the code, with its estimated execution times, defines an operation mode of the analyzed code. In order to cluster the several operation modes that exhibit certain degree of similarity according to the required amount of processing in the modeled processor, the concept of scenario was used, which differentiates every task behavior with respect to the several inputs the application under analysis may receive. From this timing characterization of every application task, the global execution requirements of the application are represented by an analytical event model. It describes the tasks as timed actors of a synchronous dataflow graph, so that the multiple application scenarios are defined in terms of the variable execution times previously identified in the task characterization. A mathematical description of this model based on the Max-Plus Algebra allows one to characterize the different event sequences incoming to, and exiting from, the application as well as the event sequences between the different tasks, having in count changes in the processing requirements associated with the various scenarios previously identified. This analytical characterization between the input event sequences and the output event sequences states the basis for a model of scenario-based workload curves and a model of scenario-based service curves that allow characterizing the behavioral dynamism of the application determined by the several input events that activate several system behaviors, in the execution phase.
Malmquist, Hampus, and Anton Hansson. "Januarieffekten inom large cap och mid cap bolag : En studie på svenska börsmarknaden." Thesis, Linnéuniversitetet, Institutionen för ekonomistyrning och logistik (ELO), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-95572.
Повний текст джерелаWeldezion, Awet Yemane. "Exploring the Scalability and Performance of Networks-on-Chip with Deflection Routing in 3D Many-core Architecture." Doctoral thesis, KTH, Industriell och Medicinsk Elektronik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-179694.
Повний текст джерелаQC 20151221
Qiu, Yi. "An investigation into the microplane constitutive model for concrete." Thesis, University of Sheffield, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.311813.
Повний текст джерелаPreibisch, Jan. "Rozhodovací situace v pokerových turnajích." Master's thesis, Vysoká škola ekonomická v Praze, 2012. http://www.nusl.cz/ntk/nusl-113706.
Повний текст джерелаCreyx, Marie. "Étude théorique et expérimentale d’une unité de micro-cogénération biomasse avec moteur Ericsson." Thesis, Valenciennes, 2014. http://www.theses.fr/2014VALE0026/document.
Повний текст джерелаNowadays, the micro combined heat and electrical power (micro-CHP) systems are developing in Europe, in particular because of their interest in terms of primary energy savings. The use of biomass fuel in micro-CHP systems enhances the share of renewable energy in the energy mix. The objective of this work is to develop a test bench for a biomass-fuelled micro-CHP unit composed of a pellet boiler, an Ericsson type hot air engine (decomposed into a compression and an expansion part) and a burned gas-pressurized air heat exchanger inserted in the boiler. Models of every component have been established to characterize their working conditions depending on influent parameter settings and to size the micro-CHP unit. Two models of Ericsson engine, with established and dynamic regimes, were implemented. The preponderant influence of the temperature and pressure conditions at the inlet of the expansion cylinder and of the timing of valve closing on the engine performances are shown. The dynamic model shows the effect of considering the dynamic losses (pressure loss, heat transfer at the cylinder wall, mechanical friction) on the estimation of engine performances. Two models of the heat exchanger allow the characterization of the heat transfers crossing it, taking into account the radiation and the fouling by soot particles on the side of combustion gases. Experimental measurements obtained from the test bench of the micro-CHP unit set up were used in the developed models
Gérémie, Lauriane. "Development of an in-vitro intestinal model featuring peristaltic motion." Thesis, Sorbonne université, 2019. http://accesdistant.sorbonne-universite.fr/login?url=http://theses-intra.upmc.fr/modules/resources/download/theses/2019SORUS118.pdf.
Повний текст джерелаMy PhD work is part of the organ-on-chip field, and more precisely part of the gut-on-chip field. It is in line with the main objective of this field, which is the development of in-vitro models recapitulating as faithfully as possible the intestinal micro-environment. Through my PhD work I first developed a versatile gut-on-chip platform recapitulating the intestinal 3D architecture as well as its dynamic micro-environment. Therefore, this platform allows us to study the influence of the intestinal dynamic, especially the peristalsis, on cellular behavior in function of the 3D architecture of the scaffold. For this study Caco2 cells have been seeded either on a 2D or a 3D scaffold coated with laminin and submitted to a cyclic stretching (at 0.2 Hz and 10%) for 2, 5, 8, 16, 24 and 48 hours. Our main observation was the cellular reorientation induced by the stretching, therefore we characterized the cell behavior in function of the coating condition, the initial confluency, the stretching time and the scaffold geometry. Interestingly, the strongest cellular response was obtained when the 3D geometry and the stretching was combined illustrating the need of these two stimuli to better mimic the intestinal in vivo conditions
Adhipathi, Pradeep. "Model based approach to Hardware/ Software Partitioning of SOC Designs." Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/9986.
Повний текст джерелаMaster of Science
Wong, Darrell. "Particleboard simulation model to improve machined surface quality." Thesis, University of British Columbia, 2007. http://hdl.handle.net/2429/247.
Повний текст джерелаMartín, Badia Júlia. "Cap a l’autonomia de l’adolescent: model d’acompanyament per a professionals assistencials." Doctoral thesis, Universitat de Barcelona, 2019. http://hdl.handle.net/10803/667813.
Повний текст джерела[eng] The respect for patients’ autonomy has become a fundamental principle of bioethics, which has led to legal changes and a shift of the healthcare model, but in the case of minor patients it is very controversial: medical decisions are not taken advantage of in order to support these patients in their maturing process, so it is difficult to respect the autonomy which is neither recognized nor promoted. There is a double cause for this. On the one hand, minors have been and are seen as immature, as having no reasoning power and, in the medical field, in a biocentrical way. This has prevented healthcare professionals to gain awareness of their educative role and, consequently, the current healthcare relationship is not an empowering one but a paternalistic or adultistic one. On the other hand, the legislation upon which professionals rely establishes three criteria for dealing with minors’ decisional capacity, two of which are ambiguous, because of being subjective (maturity and best interests of the child). The third one, the age, is objective, so it gives legal security, but is not standardisable. In this way, if adults do not assume their duty of ensure that these rights are exercisable, the discourse of the rights of the child has no content. Taking this situation into account, this thesis suggests a model of autonomy promotion in minors of 12 to 15 years old (age bracket called “mature minor”), that is to say, a model of accompanying minor patients in their process of forging autonomy. The aim of this model is the forge of autonomy. It can be understood as the right and capacity to make decisions, which in the medical field are intended to develop self-care. Hence, the adolescent will need help to empower himself and to develop basic capacities. And the strategy to do so must be participation, as long as capacities can only be acquired by exercising them. Supporting adolescents will then consist on a virtuous circle between autonomy, participation and capacities. This model has to be assumable for any professional working with adolescents, in order to foster coordination between fields (healthcare, education, social work) and, therefore, an integrative view of minors. But, at the same time, it has to be applicable to the specificities of each field, so as not to make any professional go beyond his profession. This model is adolescent and family-centred, which requires two types of abiliites from professionals: communicative and pedagogical. This model has three requirements. One, having a biopsychosocial view of adolescents. Second, exercing an empowering responsibility towards them. And third, understanding that accompanying adolescents is a community process. In addition, it will be based on essential ethical principles, such as dignity, vulnerability or solidarity. And it will have three ends: one, forging identity, which is narrative and relational; two, empowerment, which has to do with developing capacities and moral development; and three, care, which should be understood as caring of adolescent’s voice and body. In short, the suggested model understands that supporting adolescents means recognizing them as subjects of needs, subjects of rights and duties and subjects of capacities to forge self-care, autonomy and their vital project. In order to ensure that the model is applicable to the daily practice of any professional working with adolescents, we propose a deliberative decision-making procedure that consists of 9 steps, as well as we include a last chapter of recommendations for professionals according to each healthcare service.
Hoelzle, James B. "Neuropsychological Assessment and the Cattell-Horn-Carroll (CHC)Cognitive Abilities Model." Connect to full text in OhioLINK ETD Center, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1216405861.
Повний текст джерелаCacciari, Matteo <1984>. "Model predictive control in thermal management of multiprocessor systems-on-chip." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amsdottorato.unibo.it/5771/1/CACCIARI_MATTEO_TESI.pdf.
Повний текст джерелаCacciari, Matteo <1984>. "Model predictive control in thermal management of multiprocessor systems-on-chip." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amsdottorato.unibo.it/5771/.
Повний текст джерелаChen, Ji. "ON-CHIP SPIRAL INDUCTOR/TRANSFORMER DESIGN AND MODELING FOR RF APPLICATIONS." Doctoral diss., University of Central Florida, 2006. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4115.
Повний текст джерелаPh.D.
School of Electrical Engineering and Computer Science
Engineering and Computer Science
Electrical Engineering
Flórez, Martha Johanna Sepúlveda. "Estimativa de desempenho de uma NoC a partir de seu modelo em SYSTEMC-TLM." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/3/3140/tde-14122006-152854/.
Повний текст джерелаThe wide variety of interconnection structures presently nowadays for SoC (Systemon- Chip), bus and networks-on-Chip NoCs, each of them with a wide set of setup parameters, provides a huge amount of design alternatives. Although the interconnection structure is a key SoC component, there are few design tools in order to set the appropriate configuration parameters for a given application. An efficient SoC project may comply an exploration stage among the possible solutions for the communication structure, during the first steps of the design process. The absence of appropriate tools for that exploration makes critical the designer?s judgment. The present study aims to enhance the communication SoC structure design area, when a NoC is used. This work proposes a methodology that allows the establishment of the NoC communication parameters using a high level model (SystemC TLM timed). Our approach analyzes and evaluates the NoC performance under a wide variety of traffic conditions. The experimental stage was conducted employing a model of a net represented by a SystemC TLM timed (Hermes_Temp). Parametric and pseudo-random generators control the network traffic. The analysis was carried on with a tool designed for these purpose, which generates a group of performance metrics. The results allow to elucidate the global and inner network behavior. The performance values are useful for the heterogeneous and homogeneous NoC design projects, improving the performance evaluation studies scope.
Li, Qingsen. "A Synthesizable VHDL Behavioral Model of A DSP On Chip Emulation Unit." Thesis, Linköping University, Department of Electrical Engineering, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-1723.
Повний текст джерелаThis thesis describes the VHDL behavioral model design of a DSP On Chip Emulation Unit. The prototype of this design is the OnCE port of the Motorola DSP56002.
Capabilities of this On Chip Emulation Unit are accessible through four pins, which allows the user to step through a program, to set the breakpoint that stop program execution at a specific address, and to examine the contents of registers, memory, and pipeline information. The detailed design that includes input/output signals and sub blocks is presented in this thesis.
The user will interact with the DSP through a GUI on the host computer via the RS232 port. An interface between the RS232 and On Chip Emulation Unit is therefore designed as well.
The functionality is designed to be same as described by Motorola and it is verified by a test bench. The writing of the test bench, test sequence and results is presented also.
Tsang, Moses T. "3-D finite element beam/connector model for a glulam dome cap." Thesis, This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-09052009-040556/.
Повний текст джерелаAn, Feng-Chen. "Modelling of FRP-concrete interfacial bond behaviour." Thesis, University of Edinburgh, 2015. http://hdl.handle.net/1842/10511.
Повний текст джерелаYoung, Antony, and antony young@rmit edu au. "Accountants' acceptance of a cashless monetary system using an implantable chip." RMIT University. Accounting and Law, 2007. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20080618.093806.
Повний текст джерелаOtoom, Mwaffaq Naif. "Capacity Metric for Chip Heterogeneous Multiprocessors." Diss., Virginia Tech, 2012. http://hdl.handle.net/10919/26332.
Повний текст джерелаPh. D.
Fan, Xiaolin. "Material flow in a wood-chip refiner." Thesis, McGill University, 1987. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=63977.
Повний текст джерелаZhou, Hao. "A mathematical model for the deformations achievable by a slightly extensible spherical cap." Thesis, University of Hawaii at Manoa, 2003. http://hdl.handle.net/10125/7055.
Повний текст джерелаvii, 35 leaves
Rydén, Linda. "The EU common agricultural policy and its effects on trade." Thesis, Högskolan i Jönköping, Internationella Handelshögskolan, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-21403.
Повний текст джерелаWahlström, Rickard. "Validation of docking performance in the context of a structural water molecule using model system." Thesis, Department of Physics, Chemistry and Biology, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-19525.
Повний текст джерелаIn silico ligand docking is a versatile and common technique when predicting ligands and inhibitors for protein binding sites. The various docking programmes aim to calculate binding energies and to predict interactions, thus identifying potential ligands.The currently available programmes lack satisfying means by which to account for structural water molecules which can either mediate protein-ligand contacts or be displaced upon ligand binding. The present project aims to generate data to facilitate the global work of developing scoring functions in docking programmes to account for structural water molecules contribution to ligand binding to fill the said void. This is done by validating the performance of docking using a simple model system (cytochrome C peroxidase (CCP) W191G) containing four well ordered, deeply buried structural water molecules which are known to either interact with a ligand or to be displaced upon ligand binding.Known ligands were docked into eight (crystallographically determined) receptor set-ups comprising the receptor and no, one or two of the water molecules. The performance was validated by comparison of the binding modes of the docked ligands and the crystal structures, comparison of docking scores of the ligands in the different set-ups, enrichment of the ligands from a database of decoys and finally by predicting new ligands from the decoy database. In addition a high resolution crystal structure of CCP W191G in complex with 3-aminopyridine (3AP) was determined in order to resolve ambiguities in the binding mode of this ligand.
Bai, Di. "A feminist brave new world : the cultural revolution model theater revisited." Connect to resource, 1997. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1129217899.
Повний текст джерелаAdvisors: Kirk Denton and Marlene Longenecker, Interdisciplinary Program. Includes bibliographical references (leaves 196-202). Available online via OhioLINK's ETD Center
Zhou, Kan. "Demand Response in Smart Grid." Thesis, 2015. http://hdl.handle.net/1828/5973.
Повний текст джерелаGraduate
Grosberg, Anna. "A Bioinspired Computational Model of Cardiac Mechanics: Pathology and Development." Thesis, 2008. https://thesis.library.caltech.edu/2263/13/Ch2.pdf.
Повний текст джерелаIn this work we study the function and development of the myocardium by creating models that have been stripped down to essentials. The model for the adult myocardium is based on the double helical band formation of the heart muscle fibers, observed in both histological studies and advanced DTMRI images. The muscle fibers in the embryonic myocardium are modeled as a helical band wound around a tubular chamber. We model the myocardium as an elastic body, utilizing the finite element method for the computations. We show that when the spiral band architecture is combined with spatial wave excitations the structure is twisted, thus driving the development of the embryonic heart into an adult heart. The double helical band model of the adult heart allows us to gain insight into the long standing paradox between the modest, by only 15 %, ability of muscle fibers to contract, and the large left ventricular volume ejection fraction of 60 %. We show that the double helical band structure is the essential factor behind such efficiency. Additionally, when the double helical band model is excited following the path of the Purkinje nerve network, physiological twist behavior is reproduced. As an additional validation, we show that when the stripped down double helical band is placed inside a sack of soft collagen-like tissue it is capable of producing physiologically high pressures.
We further develop the model to understand the different factors behind the loss of efficiency in heart with a common pathology such as dilated cardiomyopathy. Using the stripped down model we are able to show that the change to fiber angle is the much more important factor to heart function than the change in gross geometry. This finding has the potential to greatly impact the strategy used in certain surgical procedures.
Zaid, Farid. "VIEWER-CENTRIC MOBILE SERVICES- A Framework and a Query Model." Phd thesis, 2011. https://tuprints.ulb.tu-darmstadt.de/2389/3/Farid_Zaid_Dissertation_Ch1-Ch5.pdf.
Повний текст джерелаLiu, En-Tsyr, and 劉恩慈. "Improvement of RELAP5/MOD3 CHF Model." Thesis, 1995. http://ndltd.ncl.edu.tw/handle/47405775182304825353.
Повний текст джерелаYang, Ling-Shiang, and 楊凌翔. "Conditional probability prediction model for landslides induced by Chi-Chi earthquake." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/20195995026775436983.
Повний текст джерела國立臺灣大學
土木工程學研究所
93
Taiwan locates in the circum-pacific seismic zone with frequent earthquake activities, which could induce the hazardous landslides. An effective landslide prediction map could provide an important reference for policymaking for land use regulation and drafting of mitigation measures of potential disastrous area. The geographic information system database of the research area was constructed by colleting geology and geomorphology data and the landslide scars triggered by Chi-Chi earthquake of research area. Furthermore, the Conditional Probability method was utilized to construct landslide potential model and prediction model. Based on the results of landslide potential analysis, the best factor combination for landslide prediction analysis was determined. Verification of results from the landslide potential and prediction analysis was performed using landslide scars of research area, and success rate of analysis could be quantified. The results of landslide prediction analysis indicate that using the aspect, slope and geology factors, could properly build up a distinguishing landslide prediction model. The landslide scars in the landslide prediction map coincide well with the high landslide probability area. Furthermore, the results of comparisons also prove the suitability of verification method used in this research.
Wang, Chun-Hsiang, and 王俊翔. "Optical Model Establishment for Blue LED Flip Chip." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/14320983822292203576.
Повний текст джерела國立中興大學
精密工程學系所
105
Nowadays, Blue LED Flip Chip simulation is usually modeled as surface. In this thesis, we discuss the LED Chip which has six surfaces, and measure the flux and light pattern of each surface. However, in general research it is not discussed in details regarding the luminous flux and the optical model distribution of the front side and lateral side. The front surface and lateral surface light pattern are combined with OPTISWORKS software to establish the optical model for blue LED flip chip. It can provide a reference template for optical designer. In the future, it also can apply to flip chip package.
Chen, Jeng-Yang, and 陳政揚. "Building the Model of Blue LED Flip Chip." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/52630568647296632993.
Повний текст джерела國立中興大學
精密工程學系所
103
LED is one of the promising light source which has the characteristics of low power consumption, small volume and no mercury pollution. Two well-known methods to increase luminous efficiency are LED-side roughness and design geometric patterned sapphire structure. But no LED Chip model has been proposed so far. Motivated by this point, this work employees optical simulation software called OptisWorks and optics principle to design the model of blue LED chip. With the verification of the simulation and experiment, we succeed in building the model of blue flip LED chip. Through the optical microscope and simulation we know the intensity distribution in the surface regions of LED is not very uniform. Through the side view of LED it is observed that the existence varies substalutially at different angles. The luminous existence is more concentrated at the bottom.The model of flip chip is investigated and built in the work, which improves the understanding of the top and side surfaces emission characteristics. This is helpful to future package and applications for blue LED flip chip.
Hong, Sheng-Jhong, and 洪勝忠. "Integrity Testing of Model Piles with Pile Cap." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/83126524854761132090.
Повний текст джерела朝陽科技大學
營建工程系碩士班
101
The non-destructive testing (NDT) methods have been successfully applied to the integrity testing for newly-built pile. But experience with integrity testing of piles with pile cap is still lacking. The main reason is the effect of pile cap. The existing piles are often presented in the form of group pile with pile cap, thus making the testing signal very complex, and causing difficulties for integrity testing. In this study, sonic echo (SE) method, impulse response (IR) method and ultra-seismic (US) method were used for integrity testing of model piles with pile cap. The model piles contain defects of various size, location, and type. The objective of this study is to investigate the feasibility of these three NDT methods in detecting the defects in the model piles. Results of these tests indicate that: even with the influence of the pile cap, SE method and IR method can still distinguish between intact pile and piles with major defects, but error in pile length are greater than piles without pile cap. Furthermore, the signal is more difficult to interpret. If the receiver is placed properly, the US method can clearly determine the intact pile and broken pile.
Wu, Mingqi. "Population SAMC, ChIP-chip Data Analysis and Beyond." 2010. http://hdl.handle.net/1969.1/ETD-TAMU-2010-12-8752.
Повний текст джерелаChang, Chun-Ping, and 張鈞評. "Building the Chip Scale Package Model With Fluorescent powder." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/65938952897467800501.
Повний текст джерела