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Tesis sobre el tema "Modelli deterministici"

Autor: Grafiati
Publicado: 10 de marzo de 2023
Última modificación: 31 de julio de 2025

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1

Artioli, Simone. "Dinamica delle popolazioni: modelli deterministici di Lotka-Volterra." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2020. http://amslaurea.unibo.it/21934/.

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Lo scopo di questo lavoro di tesi è quello di analizzare i modelli deterministici di dinamica delle popolazioni, dal primo e più semplice modello Malthusiano per la descrizione del comportamento dinamico di un insieme di individui considerati pressoché identici, fino ad arrivare allo studio dei sistemi del tipo preda-predatore trattati grazie al famoso modello di Lotka-Volterra. Tale modello è stato studiato nella sua versione base, in cui esso descrive la dinamica di interazione tra due specie compresenti nello stesso ambiente, sia da un punto di vista puramente matematico sia tramite simula
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2

Li, Shan. "Railway sleeper modelling with deterministic and non-deterministic support conditions." Thesis, KTH, Väg- och banteknik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-91634.

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Railway sleepers have important roles in the complex railway system. Due to different loading condition, poor maintenance of sleeper or bad quality of ballast, a random load distribution along the sleeper-ballast interface may occur. A sleeper design, and also the track system design, which do not consider the random load distribution, could influence the performance of the sleeper and even damage the whole railway system. Thus, a numerical static and dynamic analysis for a pre-stressed concrete mono-block railway sleeper is carried out using finite element method. The structural behaviour of
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3

Bosi, Marco. "Modelli dinamici di geodinamo." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amslaurea.unibo.it/12062/.

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Questa tesi introduce le basi del geomagnetismo partendo da un approccio ai modelli fluidi e alle equazioni MHS, accennando alle numerose difficoltà che portano in materia di simulazioni e calcoli. In seguito si introducono i modelli a disco con uno studio approfondito della dinamica che, pur partendo da equazioni molto più semplici e approssimate della trattazione fluida, trova riscontro con i punti fondamentali del geomagnetismo e con i comportamenti dei modelli fluidi.
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4

Smith, Emma Catherine. "Deterministic modelling of whole-body sheep metabolism." Thesis, Curtin University, 2014. http://hdl.handle.net/20.500.11937/807.

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Livestock is amongst Australia’s most enduring and prolific industries; however whole-body modelling approaches are limited in livestock research. Mathematical techniques are employed, extending an existing lamb growth model to adulthood. It tracks wool, protein, fat, metabolites and DNA pools, simulating whole-body metabolism. Implementation into a dynamic optimisation package allows for the optimisation of model parameters to improve model behaviour. The focus is on feed, nutrient absorption, energy expenditure, wool growth and defining appropriate initial conditions.
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5

Hopf, Craig. "Exchange traded horserace betting fund with deterministic payoff – a mathematical analysis of a profitable deterministic horserace betting model." Thesis, Griffith University, 2014. http://hdl.handle.net/10072/366832.

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The horserace betting market is a subset of the financial market space, and wagering typically inherits a defined return – to – risk trade-off. For horserace betting input into institutional portfolio to be plausible, the payoff – to – risk trade-off from betting must be acceptable for the fund when compared with the return – risk trade-off from the existing mainstream assets included in portfolio investment. A new paradigm for horserace betting modelling and investing is acclaimed in this thesis, as premiss for betting input into institutional portfolio. An exchange traded betting fund is dev
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6

Contant, Sheila. "Modelagem de reatores de polimerização : deterministica e por redes neurais." [s.n.], 2007. http://repositorio.unicamp.br/jspui/handle/REPOSIP/267389.

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Orientador: Liliane Maria Ferrareso Lona<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Quimica<br>Made available in DSpace on 2018-08-08T09:34:01Z (GMT). No. of bitstreams: 1 Contant_Sheila_D.pdf: 2364843 bytes, checksum: 3e362baeba9fe60ca91b2f54bbcac57e (MD5) Previous issue date: 2007<br>Resumo: Neste trabalho, foram estudados diferentes processos de polimerização: (1) homopolimerização do estireno e copolimerização do estireno com metacrilato de metila em emulsão via radical livre convencional e (2) homopolimerização do estireno em massa via radical livre
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7

Lim, Shen Hin Mechanical &amp Manufacturing Engineering Faculty of Engineering UNSW. "Calibration-free image sensor modelling: deterministic and stochastic." Awarded by:University of New South Wales. Mechanical & Manufacturing Engineering, 2009. http://handle.unsw.edu.au/1959.4/44563.

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This dissertation presents the calibration-free image sensor modelling process applicable for localisation, such that these are robust to changes in environment and in sensor properties. The modelling process consists of two distinct parts, which are deterministic and stochastic techniques, and is achieved using mechanistic deconvolution, where the sensor???s mechanical and electrical properties are utilised. In the deterministic technique, the sensor???s effective focal length is first estimated by known lens properties, and is used to approximate the lens system by a thick lens and its prop
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8

Lei, Hung Fei. "Modelling soil creep using deterministic and stochastic approaches." Thesis, King's College London (University of London), 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.411022.

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Bald, Atelmo Aloisio. "Modelos deterministicos com equações de diferenças de fenomenos biologicos." [s.n.], 1993. http://repositorio.unicamp.br/jspui/handle/REPOSIP/306491.

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Orientador : Rodney Carlos Bassanezi<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Matematica, Estatistica e Computação Cientifica<br>Made available in DSpace on 2018-07-18T03:52:56Z (GMT). No. of bitstreams: 1 Bald_AtelmoAloisio_M.pdf: 2680822 bytes, checksum: 11988a2810f2126686f8b1aa0c2c2fdf (MD5) Previous issue date: 1993<br>Resumo: Não informado.<br>Abstract: Not informed.<br>Mestrado<br>Mestre em Matemática Aplicada
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10

Bartasson, Maria Cristiane. "Modelagem e simulação de um processo de copolimerização pelo uso de logica nebulosa e modelo deterministico." [s.n.], 2005. http://repositorio.unicamp.br/jspui/handle/REPOSIP/266659.

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Orientador: Rubens Maciel Filho<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Quimica<br>Made available in DSpace on 2018-08-09T00:47:26Z (GMT). No. of bitstreams: 1 Bartasson_MariaCristiane_M.pdf: 2568524 bytes, checksum: e046e909aa1b5cd1ea76f5a6c76ad669 (MD5) Previous issue date: 2005<br>Resumo: O processo de copolimerização do metacrilato de metila/acetato de vinila ocorre pelo mecanismo cinético de radicais livres. Este sistema de copolimerização é interessante pois o metacrilato de metila é muito mais reativo que o acetato de vinila, como indica
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11

Vilcarromero, Angela Cristina Santos. "Analise de modelos deterministicos em fitopatologia." [s.n.], 1996. http://repositorio.unicamp.br/jspui/handle/REPOSIP/306470.

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Orientador: Rodney Carlos Bassanezi<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Matematica, Estatistica e Ciencia da Computação<br>Made available in DSpace on 2018-07-21T13:34:24Z (GMT). No. of bitstreams: 1 Vilcarromero_AngelaCristinaSantos_M.pdf: 3180645 bytes, checksum: 2c1dd258e75a04617c402d6f3a0deae4 (MD5) Previous issue date: 1996<br>Resumo: o tema central da dissertação está baseado na análise dos principais modelos matemáticos determinísticos aplicados para Fitopatologia. Concentramo-nos principalmente em modelos que envolvem a resistência de determina
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12

Silberhorn-Hemminger, Annette. "Modellierung von Kluftaquifersystemen : Geostatistische Analyse und deterministisch-stochastische Kluftgenerierung /." Stuttgart : Inst. für Wasserbau, 2002. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB10292303.

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13

Jenkins, Robert. "Deterministic and stochastic modelling of chemical and biochemical reaction kinetics." Thesis, University of Nottingham, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.495585.

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We analyse various chemical reaction schemes both deterministically and stochastically. The reactions are considered to demonstrate the rich, mathematical behaviour apparent in the systems, rather than to represent realistic chemical reactions. The deterministic analysis is carried out to provide insights into the behaviour of the systems that we can then consider stochastically.
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14

Herman, Dorota. "Deterministic and stochastic modelling of transcriptional regulation of plasmid RK2." Thesis, University of Birmingham, 2012. http://etheses.bham.ac.uk//id/eprint/3720/.

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Plasmids RK2 are broad host range plasmids and they carry genes for antibioticresistance. Their central control operon, encoding two global regulators KorA and KorB, is anatural example of a negatively self-regulated operon. The aim of the work described herewas to use mathematical models to better understand the function and adaptation of KorA and orB regulation, in the context of available experimental data. The deterministic models combined with statistical inference allowed for analyses of he regulation mechanism and hypothesis generation about the system dynamics. Furthermore, the extende
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15

Frankenberg, Claudio Luis Crescente. "Análise de ecossistemas aquáticos através do método input-output : estudo de caso lagoa Itapeva (sistema lagunar costeiro do Rio Grande do Sul)." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2004. http://hdl.handle.net/10183/5943.

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A enorme complexidade dos sistemas ecológicos tem sido uma grande barreira para a compreensão e o gerenciamento da problemática ambiental. Neste sentido a modelagem matemática é uma valiosa ferramenta, devido a sua capacidade de organizar as informações disponíveis sobre estes sistemas e de fazer previsões a seu respeito para diferentes condições. Desta forma a análise de sistemas naturais vem sendo abordada de diferentes maneiras, sendo que nas últimas décadas a teoria de ecossistemas expandiu-se e ramos específicos, que permitem seguir e predizer a evolução de ecossistemas, foram formulados.
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16

Males, Ryan James. "Complex, deterministic hydrological modelling towards decision support for urban catchment management." Thesis, Stellenbosch : Stellenbosch University, 2001. http://hdl.handle.net/10019.1/52170.

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Thesis (M.ScEng.)--Stellenbosch University, 2001.<br>ENGLISH ABSTRACT: Historically, urban waterresources have too often been managed without recognition that the flow in a river integrates many landscape and biological features. This has often resulted in the elimination of natural processes and their replacement by man-made streamlined structures with the effects of increased urbanisation being primarily addressed from an engineering and economics point of view to the detriment of environmental and social issues. Catchment Management, as legislated in the Water Act, No. 36 of 1998, is a
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17

Natarajan, Sukina. "Stability of small molecular clusters modelled with stochastic and deterministic dynamics." Thesis, University College London (University of London), 2007. http://discovery.ucl.ac.uk/1446034/.

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This investigation concerns the transition pathway of the condensation phase transition. Under certain conditions condensation is initiated by nucleation events, which are driven by fluctuations or instabilities in the vapour phase. This involves the spontaneous formation of groups of particles, which we refer to as clusters. The clusters have a highly unstable nature and exist momentarily, before breaking up. This makes them difficult to study experimentally and model mathematically, in comparison to larger more stable systems. The aim of this study is to explore the stability of these tiny m
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18

Giaretta, Alberto. "Deterministic and Stochastic Modeling of Human Papillomavirus Gene Regulatory Network." Doctoral thesis, Università degli studi di Padova, 2016. http://hdl.handle.net/11577/3427224.

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In this thesis a novel stochastic and deterministic mathematical model of Human papillomavirus (HPV) gene regulatory network was developed. The novelty of this project is both on methodological and biological /clinical site. The former is in line with the current challenge in recent years to have a holistic view of the basics regulatory mechanisms interconnected to form a complex machinery, where complex patterns can arise, only form the interconnection of basics modules. In fact, HPV offers a case of study of great interest in molecular systems biology. It involves a number of relevant regul
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19

Raimundo, Silvia Martorano. "Uma abordagem deterministica da interação de doenças AIDS e TB num presidio." [s.n.], 1996. http://repositorio.unicamp.br/jspui/handle/REPOSIP/306468.

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Orientador: Rodney Carlos Bassanezi<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Matematica, Estatistica e Computação Científica<br>Made available in DSpace on 2018-07-21T06:27:11Z (GMT). No. of bitstreams: 1 Raimundo_SilviaMartorano_D.pdf: 3838411 bytes, checksum: 37f3d151451ac1922b8571328082790f (MD5) Previous issue date: 1996<br>Resumo: Não informado.<br>Abstract: Not informed.<br>Doutorado<br>Doutor em Matemática Aplicada
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20

Lukina, Jelena. "Apie vieną rūšių sąveikos modelį." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2014. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2012~D_20140704_175054-40273.

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Darbe nagrinėjamas gegučių ir paukščių-šeimininkų sąveikos deterministinis modelis, priimant dėmesin paukščių amžių, ir atsižvelgiant į diskrečią jauniklių aibę bei jų globą. Visi individai yra skirstomi į tris grupes: priešreprodukcinio (dar negali turėti jauniklių), reprodukcinio (gali susilaukti palikuonių) ir poreprodukcinio amžiaus. Modelis yra sudarytas iš integro-dalinių diferencialinių lygčių, atsižvelgiant į integralinio tipo sąlygas. Šių lygčių skaičius priklauso nuo maksimalaus biologiškai įmanomo šeimininko kiaušinių lizde skaičiaus. Yra tiriami separabilieji uždavinio sprendiniai
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21

Zuccolo, Elisa. "Neo-deterministic seismic hazard scenarios: from the modelling of the past to prediction." Doctoral thesis, Università degli studi di Trieste, 2010. http://hdl.handle.net/10077/3489.

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2008/2009<br>È stato affrontato il problema della definizione della pericolosità sismica utilizzando il metodo neo-deterministico (NDSHA), che si basa sul calcolo di sismogrammi sintetici realistici. Considerando modelli strutturali medi e un set di sorgenti distribuite internamente alle zone sismogenetiche, possono essere definite delle mappe di scuotimento al bedrock complementari alla mappa di pericolosità di tipo probabilistico (PSHA) sulla quale è basata la normativa antisismica italiana. L’analisi di stabilità effettuata ha dimostrato che l’informazione disponibile sui terremoti del
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22

Shen, Hong. "Non-deterministic analysis of slope stability based on numerical simulation." Doctoral thesis, Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2012. http://nbn-resolving.de/urn:nbn:de:bsz:105-qucosa-96370.

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In geotechnical engineering, the uncertainties such as the variability and uncertainty inherent in the geotechnical properties have caught more and more attentions from researchers and engineers. They have found that a single “Factor of Safety” calculated by traditional deterministic analyses methods can not represent the slope stability exactly. Recently in order to provide a more rational mathematical framework to incorporate different types of uncertainties in the slope stability estimation, reliability analyses and non-deterministic methods, which include probabilistic and non probabilisti
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23

Santana, Pedro Leite de. "Modelagem matematica para reator trifasico : modelos deterministicos, neuronais e hibridos." [s.n.], 1999. http://repositorio.unicamp.br/jspui/handle/REPOSIP/267345.

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Orientador: Rubens Maciel Filho<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Quimica<br>Made available in DSpace on 2018-07-25T09:47:27Z (GMT). No. of bitstreams: 1 Santana_PedroLeitede_D.pdf: 5012531 bytes, checksum: e76624d6d8e3a9f61e563a373c8fc641 (MD5) Previous issue date: 1999<br>Resumo: Este trabalho apresenta um estudo sobre a modelagem matemática de um reator de lama catalítico trifásico, em regime estacionário, a partir de duas abordagens, a saber considerando sua descrição por meio de equações fenominológicas (modelos matemáticos deterministicos)
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24

Mariano, Adriano Pinto 1978. "Modelagem deterministica de reatores de lama cataliticos trifasicos : aplicação para reações de hidrogenação." [s.n.], 2003. http://repositorio.unicamp.br/jspui/handle/REPOSIP/266540.

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Orientadores: Rubens Maciel Filho, Eduardo Coselli Vasco de Toledo<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Quimica<br>Made available in DSpace on 2018-08-03T15:04:36Z (GMT). No. of bitstreams: 1 Mariano_AdrianoPinto_M.pdf: 3273115 bytes, checksum: 7578b10a457e163b9f32d529762bc418 (MD5) Previous issue date: 2003<br>Mestrado
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25

Sales, Junior Aluizio. "Desenvolvimento de modelos deterministico dinamico e hibrido neural para reatores multifasicos "air-lift"." [s.n.], 2002. http://repositorio.unicamp.br/jspui/handle/REPOSIP/267514.

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Orientador: Rubens Maciel Filho<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Quimica<br>Made available in DSpace on 2018-08-01T04:20:40Z (GMT). No. of bitstreams: 1 SalesJunior_Aluizio_M.pdf: 3176397 bytes, checksum: 9904b973765674087c4cfb63935f8354 (MD5) Previous issue date: 2002<br>Resumo: Três modelos computacionais diferentes foram desenvolvidos, comparados e analisados em função dos dados experimentais obtidos. Ambos os modelos correlacionam transferência de massa e hidrodinâmica para um reator "air-lift" de "loop" externo. Um dos modelos é apre
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26

Selvarasa, G. (Gowshigan). "Map-based channel model parameterization and comparison of three different deterministic channel modelling methods." Master's thesis, University of Oulu, 2019. http://jultika.oulu.fi/Record/nbnfioulu-201907162704.

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Abstract. The interest in studying the channel characteristics is exponentially increasing with the growth of the communication systems. Various channel modelling approaches have been discussed in the past decades. The ray-tracing based channel models are distinguished from the other channel models as they consider the environmental information and thus are expected to reflect the real propagation phenomena that exist in that specific environment. The goal of this thesis is to study the propagation channel characteristics of the three different channel models. The two deterministic channel mod
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27

Abdel-Aal, Mohamad. "Modelling the Viability of Heat Recovery from Underground Pipes. Deterministic modelling of wastewater temperatures in a 3000 sewer pipe network." Thesis, University of Bradford, 2015. http://hdl.handle.net/10454/14467.

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Modelling wastewater temperature variations in a network of 3048 sewer pipes was achieved in this project. Recovering heat from sewers presents attractive options for producing clean energy. However, heat recovery from sewerage may result in wastewater temperature drops which may reduce the influent temperature at the wastewater treatment plant (WWTP). This drop in the WWTP influent temperature may result in the degradation of the biological treatment stage. Therefore, it is vital to predict the impact of recovering heat from sewers on the wastewater temperature. Sewer temperatures along with
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28

Hinke, Lars. "Modelling approaches for the low-frequency analysis of built-up structures with non-deterministic properties." Thesis, University of Southampton, 2008. https://eprints.soton.ac.uk/63243/.

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Virtual simulations of the behaviour of mechanical systems are of widespread use in academia and industry. Mechanical structures are often analysed using the finite element method, where deterministic models with one particular set of physical parameters are employed. However, the underlying assumption that the input data is precisely known is in general not valid, because there are uncertainties about the parameters, often until the last stage of the design cycle and even when the product is in service. Furthermore, every manufacturing process naturally introduces some product variability, wh
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29

Sferratore, Agata. "Modelling the transfer, transformation and retention of silica along aquatic continuums : an upgraded deterministic approach." Paris 6, 2006. http://www.theses.fr/2006PA066518.

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30

Moryadee, Chanicha. "Optimisation models and heuristic methods for deterministic and stochastic inventory routing problems." Thesis, University of Portsmouth, 2017. https://researchportal.port.ac.uk/portal/en/theses/optimisation-models-and-heuristic-methods-for-deterministic-and-stochastic-inventory-routing-problems(182ea07e-ef7b-4b4c-85c9-7570e8e5a160).html.

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The inventory routing problem (IRP) integrates two components of supply chain management, namely, inventory management and vehicle routing. These two issues have been traditionally dealt with problems in the area of logistics separately. However, these issues may reduce the total costs in which the integration can lead a greater impact on overall system performance. The IRP is a well-known NP-hard problem in the optimisation research publication. A vehicle direct delivery from the supplier with and without transhipments (Inventory Routing Problem with Transhipment, IRPT) between customers in c
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31

Kuhlbrodt, Till. "Stability and variability of open-ocean deep convection in deterministic and stochastic simple models." Phd thesis, [S.l. : s.n.], 2002. http://pub.ub.uni-potsdam.de/2002/0033/kuhlb.pdf.

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32

Keogh, Kevin Joseph. "Sequence stratigraphy and 3 D modelling of the East Pennine Coalfield, U.K. : a deterministic and stochastic approach." Thesis, University of Liverpool, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.251248.

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33

Batista, Liliane Maria Ferrareso Lona. "Desenvolvimento de software usando modelos deterministicos e redes neurais para o processo de craqueamento catalitico." [s.n.], 1996. http://repositorio.unicamp.br/jspui/handle/REPOSIP/266167.

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Orientador: Rubens Maciel Filho<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Quimica<br>Made available in DSpace on 2018-07-21T12:59:59Z (GMT). No. of bitstreams: 1 Batista_LilianeMariaFerraresoLona_D.pdf: 8083842 bytes, checksum: 2820c934ae200a1da7baff5f7e60ac9e (MD5) Previous issue date: 1996<br>Doutorado<br>Doutor em Engenharia Química
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34

Mesbahi, Abdessamad. "Deterministic and Stochastic Economic Modeling of Hybrid Power Supply System with Photovoltaic Generators." Master's thesis, КПІ ім. Ігоря Сікорського, 2021. https://ela.kpi.ua/handle/123456789/42555.

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Relevance of research. Due to the rapid deployment of the non-dispatchable (intermittent) generation sources in the smart grid, such as integration of the photovoltaic power plants and wind turbines in the distribution systems; this caused a problem of the uncertainty increase of simulation results for decision-making for power supply systems, these uncertainties of power systems are getting more and more notice. At the same time, the classical power systems models cannot give accurate simulation results. Wherein; it became necessary to define new models to represent the specific parameters of
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35

Marcu, Loredana Gabriela. "Deterministic modelling of kinetics and radiobiology of radiation-cisplatin interaction in the treatment of head and neck cancers." Title page, contents and abstract only, 2004. http://hdl.handle.net/2440/37961.

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One of the main objectives of combining radiation treatment and chemotherapy is to obtain a therapeutic gain by an improved tumour control with less or no enhancement of normal tissue toxicity. The optimal schedule for the combined treatment of cisplatin-radiation is still under investigation. Neither the optimal time interval, nor the most adequate sequence of administration of cisplatin and radiation are known. The results of the trials are also inconclusive. Some trials showed a supra-additive effect from the administration of cisplatin before radiotherapy, others, on contrary, from the inj
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Harlin, Hugo. "2D Modelling of Phytoplankton Dynamics in Freshwater Lakes." Thesis, Uppsala universitet, Avdelningen för beräkningsvetenskap, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-388868.

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Phytoplankton are single celled organisms capable of phytosynthesis, and are present in all the major oceans and lakes in the world. Phytoplankton contribute to 50% of the total primary production on Earth, and are the dominating primary producer in most aquatic ecosystems. This thesis is based on the 1D deterministic model by Jäger et. al. (2010) which models phytoplankton dynamics in freshwater lakes, where phytoplankton growth is limited by the availability of light and phosphorus. The original model is here extended to two dimensions to include a horizontal dimension as well as a vertical
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Bünger, Jonas Verfasser], Manuel [Akademischer Betreuer] Torrilhon, and Joachim [Akademischer Betreuer] [Mayer. "Three-dimensional modelling of x-ray emission in electron probe microanalysis based on deterministic transport equations / Jonas Bünger ; Manuel Torrilhon, Joachim Mayer." Aachen : Universitätsbibliothek der RWTH Aachen, 2021. http://d-nb.info/1239566646/34.

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Gisch, Debora Lidia. "Simulação da dispersão de poluentes na camada limite planetária : um modelo determinístico-estocástico." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2018. http://hdl.handle.net/10183/182254.

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Questões ambientais estão no centro das discussões nas últimas décadas. A poluição atmosférica, causada pela expansão pós-revolução industrial fez surgir a necessidade de aprender a descrever, usando modelos matemáticos, esse fenômeno. Com esse conhecimento pode-se propor soluções que mitiguem a poluição e os danos colaterais causados ao ambiente. A dispersão de poluentes modelada por soluções analíticas, a partir das equações de advecção-difusão oferecem um conhecimento sobre cada componente que constrói a equação, característica inexistente em outras abordagens, como a numérica. Entretanto e
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Simões, Pauline Santa Rosa. "Estudo sobre a viabilidade da simulação e predição de efeitos difusivos em reações de polimerização atraves de modelos deterministicos e redes neurais." [s.n.], 2001. http://repositorio.unicamp.br/jspui/handle/REPOSIP/267591.

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Orientador: Liliane Maria Ferrareso Lona<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Quimica<br>Made available in DSpace on 2018-07-29T03:39:41Z (GMT). No. of bitstreams: 1 Simoes_PaulineSantaRosa_M.pdf: 3570903 bytes, checksum: c3f6749fc2f43ebcbfe2d51df54ea6c2 (MD5) Previous issue date: 2001<br>Resumo: O presente trabalho tem como objetivo modelar um reator de polimerização operando em regime batelada, usando como caso estudo a polimerização em massa e solução do metilmetacrilato (MMA). Serão utilizadas redes neurais artificiais, para o desenvolvim
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Tan, Jun Liang. "Development of a pitch based wake optimisation control strategy to improve total farm power production." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-304705.

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In this thesis, the effect of pitch based optimisation was explored for a 80 turbine wind farm. Using a modified Jensen wake model and the Particle Swarm Optimisation (PSO) model, a pitch optimisation strategy was created for the dominant turbulence and atmospheric condition for the wind farm. As the wake model was based on the FLORIS model developed by P.M.O Gebraad et. al., the wake and power model was compared with the FLORIS model and a -0.090% difference was found. To determine the dynamic predictive capability of the wake model, measurement values across a 10 minute period for a 19 wind
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Santos, Helena Barreto dos. "Colonização por staphylococcus aureus meticilina-resistente (MRSA) e seus fatores associados, em pacientes clínicos admitidos no Hospital De Clínicas de Porto Alegre." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2009. http://hdl.handle.net/10183/17912.

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Contexto: As infecções causadas pelo Staphylococcus aureus resistente a meticilina tem conseqüências graves aos pacientes e aos serviços de saúde. As medidas gerais de controle de infecção são fundamentais para conter a disseminação desta bactéria, mas não são sempre suficientes, e estratégias mais agressivas são empregadas muitas vezes para obter-se uma diminuição das taxas. Os estudos publicados para a avaliação da efetividade das medidas tem recebido criticas pela sua qualidade, e ainda não ha consenso sobre o assunto. Objetivos: Quantificar a prevalência de pacientes colonizados pelo Staph
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Almeida, Ricardo Santos de. "Análise de Vibrações em Pontes Rodoviárias Induzidas pelo Tráfego de Veículos sobre Pavimentos Irregulares." Universidade do Estado do Rio de Janeiro, 2006. http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=427.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>Nesta dissertação, propõe-se uma metodologia para a analise da resposta dinâmica de pontes rodoviárias devido à travessia de comboios de diversos tipos de veículos sobre o tabuleiro irregular dessas obras de arte. Para tal, desenvolve-se uma análise paramétrica extensa com o objetivo de avaliarem-se os efeitos dinâmicos provenientes das irregularidades superficiais existentes no tabuleiro sobre o comportamento das pontes rodoviárias. A metodologia de análise é desenvolvida no domínio do tempo de acordo com um modelo estatístico. O
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Kodikara, Kodikara Arachchige Tharindu Lakshitha. "Structural health monitoring through advanced model updating incorporating uncertainties." Thesis, Queensland University of Technology, 2017. https://eprints.qut.edu.au/110811/1/Kodikara%20Arachchige%20Tharindu%20Lakshitha_Kodikara_Thesis.pdf.

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This research developed comprehensive model updating systems for real structures including a hybrid approach which enhanced existing deterministic model updating techniques by providing measures to incorporate uncertainties in a computationally efficient way compared to probabilistic model updating approaches. Further, utilizing the developed hybrid approach a methodology was developed to assess the deterioration of reinforced concrete buildings under serviceability loading conditions. The developed methodologies in the research were successfully validated utilizing two real benchmark structur
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Gonzalez, Rodrigo Silva. "Funções generalizadas, modelos de crescimento contínuos e discretos e caminhadas estocásticas em meios desordenados." Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/59/59135/tde-01092011-094315/.

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Este trabalho está divido em duas partes. Na primeira apresentamos as funções logaritmo e exponencial generalizadas. A partir delas uma grande variedade de outras funções generalizadas pode ser obtida, permitindo uma formulação única dos comportamentos oscilatório, exponencial e lei de potência, característicos dos principais fenômenos físicos. Também mostramos que é possível generalizar a função densidade de probabilidade (pdf) exponencial estendida (stretched exponential) e, a partir dela, uma vasta gama de outras pdfs, que caracterizam os sistemas complexos em Física. As funções logaritmo e
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45

Moatar-Bertrand, Florentina. "Modélisations statistiques et déterministes des paramètres physico-chimiques utilisés en surveillance des eaux de rivières : application à la validation des séries de mesures en continu (cas de la Loire moyenne)." Grenoble INPG, 1997. http://www.theses.fr/1997INPG0219.

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Pour la surveillance hydroecologique des centrales nucleaires, des stations automatiques mesurent en continu quatre parametres physico-chimiques : la temperature de l'eau, l'oxygene dissous, le ph et la conductivite electrique. Ces stations produisent a chaque heure des mesures de la qualite de l'eau prelevee en amont, en aval et au droit du rejet des centrales. Ce travail propose un ensemble d'outils permettant la critique et la validation de ces donnees. Ces outils devraient permettre de detecter les valeurs aberrantes, les discontinuites et les derives des enregistrements les plus frequemme
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Сверстюк, Андрій Степанович, А. С. Сверстюк та A. S. Sverstiuk. "Моделі та методи компартментного математичного моделювання кіберфізичних систем медико-біологічних процесів". Diss., «Укрмедкнига» Тернопільського національного медичного університету імені І. Я. Горбачевського, 2020. http://elartu.tntu.edu.ua/handle/lib/32351.

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Захист відбудеться «02» жовтня 2020 р. о 12 00 годині на засіданні спеціалізованої вченої ради Д58.052.01 в Тернопільському національному технічному університеті імені Івана Пулюя, 46001, м. Тернопіль, вул. Руська, 56, ауд. 79.<br>Дисертація присвячена вирішенню проблеми розвитку математичного моделювання та обчислювальних методів у напрямку створення та дослідження нових компартментних математичних моделей кіберфізичних систем медико- біологічних процесів. Розроблено компартментні математичні моделі кіберфізичних систем медико-біологічних процесів з використанням решітчастих диф
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Vo, Ngoc Duong. "Modélisation hydrologique déterministe pour l'évaluation des risques d'inondation et le changement du climat en grand bassin versant. Application au bassin versant de Vu Gia Thu Bon, Viet Nam." Thesis, Nice, 2015. http://www.theses.fr/2015NICE4056/document.

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Le changement climatique dû à l'augmentation des émissions de gaz à effet de serre est considéré comme l'un des principaux défis pour les êtres humains dans 21ème siècle. Il conduira à des changements dans les précipitations, l'humidité atmosphérique, augmentation de l'évaporation et probablement augmenter la fréquence des événements extrêmes. Les conséquences de ces phénomènes auront une influence sur de nombreux aspects de la société humaine. Donc, il y a une nécessité d'avoir une estimation robuste et précise de la variation des facteurs naturels dus au changement climatique, au moins dans
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Ruelle, Pierre. "Variabilité spatiale à l'échelle de parcelles de cultures : étude expérimentale et modélisation des bilans hyriques et des rendements." Université Joseph Fourier (Grenoble ; 1971-2015), 1995. http://www.theses.fr/1995GRE10035.

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La parcelle de culture, unite caracteristique du paysage et echelle operationnelle pour l'agriculteur, constitue la surface elementaire de gestion de l'eau et de l'environnement. Aussi ce memoire s'attache a caracteriser a cette echelle variabilite des rendements des cultures et des bilans hydriques en confrontant approche experimentale et modelisation. Une meme methodologie a ete appliquee sur deux sites mediterraneens: en tunisie pour trois cultures pluviales et en france pour deux essais de sorghos irrigues par aspersion. La variabilite spatiale des rendements, de l'humidite du premier metr
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Tognaccini, Sofia. "Geomorfologia applicata all'individuazione dello stato di attività dei movimenti gravitativi e analisi di suscettibilità da frana in diversi contesti geologico-strutturali." Doctoral thesis, 2019. http://hdl.handle.net/2158/1198143.

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Le analisi contenute nel presente elaborato di tesi costituiscono uno strumento conoscitivo di base, indispensabile per tutte quelle zone in cui i movimenti franosi o altre dinamiche inducono pericolosità geologica interferendo con l’ambiente e le strutture antropiche, consentendo una buona conoscenza, anche di territori con estensione piuttosto ampia, a costi molto ridotti.Tutte le procedure e software utilizzati nel presente lavoro sono disponibili open-source e fruibili gratuitamente online. Il rilevamento geomorfologico è stato condotto in tre aree di studio, caratterizzate da contesti ge
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(6623090), Gregory Walkup. "Investigating Attacks on Industrial Control Systems Using Deterministic Replay Simulation." Thesis, 2019.

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From factories to power grids, industrial systems are increasingly being digitally controlled and networked. While networking these systems together improves their efficiency and convenience, it also opens them up to attack by malicious actors. When these attacks occur, forensic investigators need to quickly be able to determine what was compromised and which corrective actions should be taken. In this thesis, a method is proposed for investigating attacks on industrial control systems by simulating the logged inputs of the system over time using a model constructed from the control programs t
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