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Dissertations / Theses on the topic 'Modelling and optimization'

Author: Grafiati

Published: 4 June 2021

Last updated: 27 July 2025

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1

Angulo, Ignacio. "Harvester Energy Modelling and Optimization." Thesis, KTH, Maskinkonstruktion (Inst.), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-192131.

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Denna rapport är resultatet av ett examensarbete på Kungliga Tekniska Högskolan i samarbete med Skogforsk. Syftet är att analysera den trädkapningsprocessen hos en skördare, optimera dess energiförbrukning och föreslå modifieringar av systemet. En analys av skördarhuvudets energiförbrukning genomfördes baserat på testdata från Skogforsk. Denna undersökning gav en inblick i prestandan hos hydraulmotorn Parker F11-19 vid kapnng av träd med varierande diameter, samt en kvantifiering av mängden energi som används av skördarhuvudets olika komponenter. Hydrauliska och mekaniska modeller av skördarhu

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2

D'Arienzo, Maria Pia. "Cardiovascular System: Modelling and Optimization." Doctoral thesis, Universita degli studi di Salerno, 2016. http://hdl.handle.net/10556/2224.

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2014 - 2015<br>A conservation law is a partial di_erential equation, in which the variable is a quantity which remains constant in time, that is it cannot be created and destroyed. Thanks to the conservation laws it is possible to de_ne models able to describe real systems in which something is stored. Fluid dynamic models, which are based on them, have a wide range of applications, because they can be used to describe blood ows, tra_c evolution on street networks of big cities or on motorways of big states, data ows on telecommunication networks, ows of goods on supply chains, electric networ

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Filippini, Mattia. "Magnetic gears numerical modelling and optimization." Doctoral thesis, Università degli studi di Padova, 2019. http://hdl.handle.net/11577/3425766.

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The main focus of this thesis is to provide efficient modelling and optimization strategies for a certain electro-magnetic device known as magnetic gear. In particular, magnetic, thermal and mechanical models are discussed and the non-linear material models are examined, including permanent magnets demagnetization algorithms and hysteresis models in laminated sheets. From the magnetic modelling point of view, an analytic approach for the initial simplified gear design is presented. A special focus is given to the computational burden of the method that is especially tailored for stochastic opt

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4

Granados, Fernández Víctor Hugo. "Modelling and optimization of flexible manufacturing systems." Master's thesis, Instituto Politécnico de Bragança, Escola Superior de Tecnologia e Gestão, 2012. http://hdl.handle.net/10198/7982.

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The Lagrangian relaxation method for solving a Mixed-Integer Linear Problem was implemented in order to improve the current TEMPO-PSI team exible manufacturing system solutions, available at the AIP-primeca pole in University of Valenciennes, France. The MILP optimization model, from TEMPO-PSI team, can not guarantee good results when the amount of jobs in the manufacturing system increases due to the growth in the number of variables of the model. A study on the optimization model was conducted with the objective to nd the candidate constraints for Lagrangian relaxation. A comparativ

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Olszacki, Michal. "Modelling and optimization of piezoresistive pressure sensors." Toulouse, INSA, 2009. http://eprint.insa-toulouse.fr/archive/00000297/.

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Depuis 1954, où l’effet piézorésistif a été découvert dans Silicium, la démarche pour mesurer la pression a changé et de nouveaux dispositifs avec des performances remarquables sont apparus sur le marché. Grâce au développement des microtechnologies, une nouvelle famille de capteurs de pression piézorésistifs miniatures s’est ainsi progressivement imposée pour de nombreuses applications. Même si le principe de fonctionnement des capteurs de pression piézorésistif en silicium reste le même depuis de nombreuses années, l’optimisation des capteurs pour une application donnée reste toujours une ét

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6

Panos, Christos. "Modelling, optimization and control of energy systems." Thesis, Imperial College London, 2012. http://hdl.handle.net/10044/1/9511.

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Multi-parametric programming is a mathematical theory to address optimization problems involving varying parameters. This thesis is concerned with the development of model-based controllers via parametric programming and their application to the design, operation and control of process systems. In part I of this thesis two new algorithms are presented for solving parametric optimization problem of linear state space models via dynamic programming. The first algorithm solves the nominal case, while the second introduce the case of uncertainty in the system matrices. Moreover, an algorithm for r

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7

Liu, Pei. "Modelling and optimization of polygeneration energy systems." Thesis, Imperial College London, 2009. http://hdl.handle.net/10044/1/5530.

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Ever-increasing energy consumption and consequent extensive greenhouse gas (GHG) emissions are two major urgent problems faced by all human beings in the 21st century. As a major contributor, the energy production section appears to be the most suitable field where further improvements could be explored to tackle these problems. Polygeneration is a typical type of next generation energy production technology with higher energy efficiency and lower/zero GHG emissions. However, methodologies guiding an efficient and stable transition from our existing energy systems to more advanced ones are sti

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8

sohier, emmanuel. "Modelling a Complex Production Scheduling Problem : Optimization Techniques." Thesis, Blekinge Tekniska Högskola, Avdelningen för för interaktion och systemdesign, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-2929.

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In this thesis, and complex real world problem, a sequence dependent scheduling of different product orders on a number of lines is addressed. Changeover costs occur between product orders belonging to different product groups. The operational research cycle is employed exploring different optimization techniques as mathematical modelling and heuristic approaches. The identification, implementation and demonstration of the techniques are supported with numerical results from experiments. One combination of different solution techniques is put forward. Some suggestions are done for reducing cos

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9

Sienz, J. "Integrated structural modelling, adaptive analysis and shape optimization." Thesis, Swansea University, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.639033.

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The present work is concerned with the development of procedures for an integrated system for computer aided structural optimization including topology optimization, image processing and shape optimization for two dimensional structures. At the beginning, such a system is introduced. This system integrates aspects of design and analysis modelling, behaviour sensitivity analysis, optimization and creative control via interactive graphics. A satisfactory solution of structural optimization problems can only be achieved by having a profound knowledge of each of these aspects. The introduction of

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10

Talukder, Satyobroto. "Mathematicle Modelling and Applications of Particle Swarm Optimization." Thesis, Blekinge Tekniska Högskola, Sektionen för ingenjörsvetenskap, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-2671.

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Optimization is a mathematical technique that concerns the finding of maxima or minima of functions in some feasible region. There is no business or industry which is not involved in solving optimization problems. A variety of optimization techniques compete for the best solution. Particle Swarm Optimization (PSO) is a relatively new, modern, and powerful method of optimization that has been empirically shown to perform well on many of these optimization problems. It is widely used to find the global optimum solution in a complex search space. This thesis aims at providing a review and discuss

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11

Kopsch, Thomas. "Computational modelling and optimization of dry powder inhalers." Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/275902.

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Dry powder inhalers (DPIs) are a common therapeutic modality for lung diseases such as asthma, but they are also used to treat systemic diseases such as diabetes. Advantages of DPIs include their portable design and low manufacturing costs. Another advantage of DPIs is their breath activation, which makes them popular among patients. In a passive DPI drug is only released when the patient inhales. When the patient inhales, air flows through the device. The flow of air entrains a dry powder formulation inside the device and carries it to the lung. Currently, no DPI exists which can deliver drug

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12

Cheng, Yew Bie. "Finite element modelling and optimization of solenoid actuators." Thesis, University of Southampton, 1994. https://eprints.soton.ac.uk/47958/.

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This thesis is concerned with the application of electromagnetic finite element (FE) analysis, using a general purpose package, OPERA-2d, and optimization techniques to the design of solenoid actuators used in hydraulic control valves. Different methods of force calculations are reviewed, including Maxwell Stress Tensor (MST), multi-solution Virtual Work Principle (VWP), and single-solution based VWP methods. While the MST method enables the calculation of force using a single solution and provides the distribution of force transmitted across various sections of the integration surface enclosi

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13

Maj, Cezary. "Modelling and optimization of electrostatic membrane-based actuators." Toulouse, INSA, 2009. http://eprint.insa-toulouse.fr/archive/00000299/.

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Ce mémoire concerne la modélisation analytique et l'optimisation d’actionneurs électrostatique basés sur une membrane. Le modèle analytique de fléchissement de la membrane mince de silicium, parfaitement encastrée, décrit par l'équation Lagrange/Newton pour les petites déflexions est présentée en prenant sur compte des phénomènes comme les contraintes résiduelles et les déflexions initiales de la membrane. Les réponses pour la pression uniforme sont obtenues grâce à la méthode de Galerkin et sont étudiées pour décrire le comportement de la membrane avec un modèle réduit. Les deux modèles sont

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14

Kusnetsova, Elizaveta. "Microgrid agent-based modelling and optimization under uncertainty." Versailles-St Quentin en Yvelines, 2014. http://www.theses.fr/2014VERS005S.

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Le travail de recherche est axé sur la gestion de l'énergie dans les micro réseaux électriques. La contribution scientifique est ici basée sur: (i) des approches de modélisation d'intelligence individuelle pour la gestion d'énergie sous incertitudes et (ii) la gestion de l'énergie dans un micro réseau intégrant différents acteurs avec des objectifs conflictuels. Les acteurs de micro réseaux, opérant sous un accès limité aux informations et en présence d'incertitudes opérationnelles et environnementales, sont modélisés par une approche orientée agent (Agent-Based Modelling). Les approches consi

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ROMITI, EDOARDO. "Modelling, Control and Optimization of Modular Reconfigurable Robots." Doctoral thesis, Università degli studi di Genova, 2022. http://hdl.handle.net/11567/1077156.

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Modular reconfigurable robots are robotic systems offering new opportunities to rapidly create fit-to-task flexible automation lines. The recent trends of increasingly varying market needs in low-volume high-mix manufacturing demands for highly adaptable robotic systems like this. In this context, methods for quickly and automatically generating a modular robot model and controller should be developed. Moreover, modularity and reconfigurabilty open up new opportunities for on-demand robot morphology optimization for varying tasks. Therefore a method to optimize the robot design for a ce

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Ramos, Paja Carlos Andrés. "Fuel cell modelling and control for hydrogen consumption optimization." Doctoral thesis, Universitat Rovira i Virgili, 2009. http://hdl.handle.net/10803/8467.

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en Español:<br/>Se propone un modelo de FC basado en ecuaciones electroquímicas para predicción del exceso de oxígeno y de la temperatura de la pila, permitiendo además una conexión circuital con la carga. Así mismo, se presenta una técnica de modelado basada en Fuzzy, orientada a la emulación, obteniendo gran precisión con carga computacional reducida. Usando este último modelo se diseña e implementa un emulador. Estos modelos y el sistema de emulación fueron validados usando un sistema experimental.<br/>Adicionalmente, diferentes topologías de sistemas de potencia basados en FC se proponen y

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Ahmad, Naeem. "Modelling and optimization of sky surveillance visual sensor network." Licentiate thesis, Mittuniversitetet, Institutionen för informationsteknologi och medier, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-17123.

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A Visual Sensor Network (VSN) is a distributed system of a largenumber of camera sensor nodes. The main components of a camera sensornode are image sensor, embedded processor, wireless transceiver and energysupply. The major difference between a VSN and an ordinary sensor networkis that a VSN generates two dimensional data in the form of an image, whichcan be exploited in many useful applications. Some of the potentialapplication examples of VSNs include environment monitoring, surveillance,structural monitoring, traffic monitoring, and industrial automation.However, the VSNs also raise new ch

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18

Ibrahim, Rashidi. "Vibration assisted machining : modelling, simulation, optimization, control and applications." Thesis, Brunel University, 2010. http://bura.brunel.ac.uk/handle/2438/4732.

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Increasing demand for precision components made of hard and brittle materials such as glasses, steel alloys and advanced ceramics, is such that conventional grinding and polishing techniques can no longer meet the requirements of today's precision manufacturing engineering. Particularly, in order to undertake micro-milling of optical glasses or other hard-machining materials, vibration assisted machining techniques have been adopted. However, it is essential and much needed to undertake such processes based on a scientific approach, i.e. the process to be quantitatively controlled and optimize

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19

Ng, Alexander CB. "Decision Modelling and Optimization for Enterprise Migration to Clouds." Thesis, Université d'Ottawa / University of Ottawa, 2014. http://hdl.handle.net/10393/31719.

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Many enterprises are currently exploring the possibility of migrating some or all of their IT functionalities to public clouds with the objective of reducing their overall IT service costs or to open new business frontiers. Unfortunately, making such a decision is not a straightforward task; it requires a vigorous evaluation of the various benefits, risks and costs associated with the migration of their diverse business processes that comprise of their current IT services. Yet, this problem has received very little attention in the literature, mainly due to its interdisciplinary nature. This

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20

Sooriyadevan, Pradiv. "The electromagnetic modelling and optimization of planar holographic antennas." Thesis, University of Ottawa (Canada), 2004. http://hdl.handle.net/10393/26776.

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Antennas based on holographic principles are attractive at millimetre wave frequencies because of their potentially relatively high directivity and low profile. Most published design work on planar holographic antennas has been based on approximate expressions and experimental experience. Little attempt appears to have made to use some computational electromagnetics approach to model these antennas. Thus no numerical optimization has been possible. One aspect that makes the modeling/optimization process difficult is that such planar holographic antennas are electrically large. For instance, in

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21

MacRosty, Richard Swartz Christopher L. E. "Modelling, optimization and control of an electric arc furnace." *McMaster only, 2005.

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22

Sun, Yan. "Modelling, simulation and optimization of near-ambient grain drying." Thesis, Imperial College London, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.243324.

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23

Bhanthumnavin, Kanyarat. "Macroeconomic modelling and monetary policy rule optimization for Thailand." Thesis, University of Oxford, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.416531.

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24

Li, Mengdi. "Stochastic modelling and optimization with applications to actuarial models." Thesis, University of Nottingham, 2012. http://eprints.nottingham.ac.uk/12702/.

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This thesis is devoted to Ruin Theory which sometimes referred to the collective ruin theory. In Actuarial Science, one of the most important problems is to determine the finite time or infinite time ruin probability of the risk process in an insurance company. To treat a realistic economic situation, the random interest factor should be taken into account. We first define the model with the interest rate and approximate the ruin probability for the model by the Brownian motion and develop several numerical methods to evaluate the ruin probability. Then we construct several models which incorp

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Llana-Rodriguez, A. H. "Orebody modelling and open pit optimization using exploration data." Thesis, University of Nottingham, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.355441.

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26

Chen, Liyuan. "Essays on portfolio optimization, volatility modelling and risk measurement." Thesis, University of York, 2017. http://etheses.whiterose.ac.uk/19165/.

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This study comprises of three essays on the subject of financial risk management with applications in the fields of portfolio optimization, continuous and discrete time stochastic volatility (SV) modelling. We jointly consider two risk measures: Value-at-Risk (VaR) and conditional Value-at-Risk (CVaR) to measure the financial market risk. In order to model the distribution of financial asset returns which is characterized by skewness, heavy tails and leptokurtosis, we employ the Asymmetric Laplace distribution (ALD) in the first and third essay while constructing the risk model on the basis of

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27

Nazir, Ahsan. "Modelling and optimization of electrospun materials for technical applications." Thesis, Mulhouse, 2016. http://www.theses.fr/2016MULH0598/document.

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Ce travail de recherche traite de l’optimisation et de la modélisation de nanofibres obtenues par filage électrostatique pour des applications techniques en tant que, a) cellules résistives pour génération de chaleur et b) couche ultra filtrante pour système de protection respiratoire. Afin d’intégrer ces matériaux nanofibreux aux applications visées, deux procédés de production ont été mis en oeuvre, à savoir mono-aiguille et multijets. Une étude statistique a été réalisée pour modéliser et optimiser les non-tissés de nanofibres pour des productions à échelle laboratoire et semi-industrielle.

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Van, der Duijn Schouten Nicolaas Pieter. "Modelling, design and optimization of inverters for small drives." Thesis, University of Cambridge, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.620029.

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Olatunji, Ololade. "Modelling and optimization of microneedles for transdermal drug delivery." Thesis, Loughborough University, 2011. https://dspace.lboro.ac.uk/2134/9016.

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Microneedle mediated drug delivery is an amalgam of the conventional transdermal patch and the hypodermic needle injection. It offers an improved drug delivery technique without the limitations of the above methods. The ability of microneedles to increase permeability of substances in the skin has been established in the literature. However, a quantitative method for predicting the performance of microneedle devices prior to their fabrication is yet to be fully developed. The contribution of this research is a theoretical framework for modelling and optimizing microneedle array design to obtai

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Siurana, Paula Maria. "Modelling and multiobjective optimization for simulation of cyanobacterial metabolism." Doctoral thesis, Universitat Politècnica de València, 2017. http://hdl.handle.net/10251/90578.

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The present thesis is devoted to the development of models and algorithms to improve metabolic simulations of cyanobacterial metabolism. Cyanobacteria are photosynthetic bacteria of great biotechnological interest to the development of sustainable bio-based manufacturing processes. For this purpose, it is fundamental to understand metabolic behaviour of these organisms, and constraint-based metabolic modelling techniques offer a platform for analysis and assessment of cell's metabolic functionality. Reliable simulations are needed to enhance the applicability of the results, and this is the ma

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31

Kasisira, Levi Lukoda. "Force modelling and energy optimization for subsoilers in tandem." Thesis, University of Pretoria, 2004. http://hdl.handle.net/2263/24925.

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In the recent past, as more farm power is being demanded on farms, due to increased farm sizes and operating speeds, larger and heavier farm machines are deployed in various farming operations. Their cumulative negative effects have become more apparent with increased incidences of soil compaction problems. This has forced many farmers to practice deep tilling, using subsoilers to break up compacted subsoil layers. In some maize growing regions of South Africa, conventional subsoilers are used in a tandem configuration. The farmers believe that the use of subsoilers in this mode reduces the dr

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Zhou, Tao. "Meta-heuristic based Construction Supply Chain Modelling and Optimization." Thesis, Curtin University, 2018. http://hdl.handle.net/20.500.11937/75225.

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Driven by the severe competition within the construction industry, the necessity of improving and optimizing the performance of construction supply chain has been aroused. This thesis proposes three problems with regard to the construction supply chain optimization from three perspectives, namely, deterministic single objective optimization, stochastic optimization and multi-objective optimization respectively. Mathematical models for each problem are constructed accordingly and meta-heuristic algorithms are developed and applied for resolving these three problems.

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LA, CERVA Mariagiorgia Floriana. "MODELLING OF MEMBRANE PROCESSES: FROM CFD TO PROCESS OPTIMIZATION." Doctoral thesis, Università degli Studi di Palermo, 2020. http://hdl.handle.net/10447/395214.

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Costa, Andre. "Analytic modelling of agent-based network routing algorithms." Title page, contents and abstract only, 2002. http://web4.library.adelaide.edu.au/theses/09PH/09phc8373.pdf.

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Amadori, Kristian. "Geometry Based Design Automation : Applied to Aircraft Modelling and Optimization." Doctoral thesis, Linköpings universitet, Maskinkonstruktion, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-73109.

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Product development processes are continuously challenged by demands for increased efficiency. As engineering products become more and more complex, efficient tools and methods for integrated and automated design are needed throughout the development process. Multidisciplinary Design Optimization (MDO) is one promising technique that has the potential to drastically improve concurrent design. MDO frameworks combine several disciplinary models with the aim of gaining a holistic perspective of a system, while capturing the synergies between different subsystems. Among all disciplines, the geomet

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Rojas, Palma Alejandro Maximiliano. "Study of some problems in modelling and optimization of bioprocesses." Tesis, Universidad de Chile, 2016. http://repositorio.uchile.cl/handle/2250/141059.

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Doctor en Ciencias de la Ingeniería, Mención Modelación Matemática<br>El propósito de esta tesis es el estudio de algunos problemas que surgen desde la ingeniería de bioprocesos. En particular, el análisis del comportamiento y el cultivo óptimo de microalgas y la conexión de múltiples bioreactores. Se proponen y analizan tres problemas. El primero se basa en un reciente trabajo en el cual los autores alteran el clásico modelo de Monod incorporando incidencia de luz en la dinámica a través de la función de crecimiento de la biomasa. La idea es estudiar un problema de optimización no lineal más

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Ashaibani, A. S. "Modelling simulation and optimization of refinery processess with energy conservation." Thesis, University of Bradford, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.511389.

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Yuen, Sau-yee Christina, and 阮秀儀. "Crew scheduling and rostering for airport baggage services: optimization modelling." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2000. http://hub.hku.hk/bib/B31223874.

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Mohammed, Ahmed Maher. "Modelling and optimization of an RFID-based supply chain network." Thesis, University of Portsmouth, 2018. https://researchportal.port.ac.uk/portal/en/theses/modelling-and-optimization-of-an-rfidbased-supply-chain-network(42f39865-1895-4304-83bd-e3ae67071df1).html.

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Food supply chains (FSCs) are one of the major sectors in the global economy. Developing efficient and cost-effective food supply chains, provide an opportunity for supply chain and logistics companies to survive in the increasingly competitive market of today. In order to achieve this, one of the methods is to enhance the traceability of food during production, transportation and storage throughout the entire supply chain network in order to improve and maintain the quality and safety of the food provided to customers. Other methods include design and optimization of a supply chain network to

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Kinney, Thomas Arthur. "Quantitative modelling for optimization of the Czochralski growth of silicon." Thesis, Massachusetts Institute of Technology, 1992. http://hdl.handle.net/1721.1/13204.

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Al-Shamrani, Abdoul Ali. "Characterization, optimization and modelling of PE blends for pipe applications." Thesis, Loughborough University, 2010. https://dspace.lboro.ac.uk/2134/6019.

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Bimodal polyethylene resins are frequently used for pipe applications. In this work, blending was used to produce polyethylenes with comparable properties, particularly with respect to processing, stress crack resistance and tensile properties. Suitable blend components were identified, and their performance screened used ECHIP experimental design software. Blends were characterized using gel permeation chromatography (GPC), differential scanning calorimetry (DSC), tensile testing, stress crack resistance measurements, impact toughness testing, capillary rheometry and melt index measurements.

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Ahmadi, Reza. "Stochastic modelling and maintenance optimization of systems subject to deterioration." Thesis, City University London, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.540627.

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Vosloo, Surika. "Analytical modelling and optimization of a thermal convective microfluidic gyroscope." Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/4135.

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Thesis (MScEng (Mechanical and Mechatronic Engineering))--University of Stellenbosch, 2010.<br>ENGLISH ABSTRACT: This thesis deals with the mathematical optimization of the detecting chamber of a thermal convective microfluidic gyroscope and the comparison of several different optimization strategies. An analytical model is developed for the gyroscope and some design considerations are discussed. Sequential approximate optimization strategies are explained and compared to each other by implementing test problems fromthe literature. The optimization problem is formulated from the analytical

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Rojas-Palma, Alejandro. "Study of some problems in modelling and optimization of bioprocesses." Thesis, Montpellier, 2016. http://www.theses.fr/2016MONTT292/document.

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L’objet de cette thèse est l’étude de certains problèmes liés à l’ingénierie des bioprocédés, en particulier l’analyse du comportement et de la culture optimale des microalgues et la connexion de plusieurs bioréacteurs. Trois problèmes sont proposés et analysés. Le première est basé sur une étude récente dans laquelle les auteurs modifient le modèle classique du Monod en incorporant l’incidence de la lumière sur la dynamique à travers le rôle de la croissance de la biomasse. L’idée est d’étudier un problème plus général de l’optimisation non linéaire qui considère maximisation de la biomasse m

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Yuen, Sau-yee Christina. "Crew scheduling and rostering for airport baggage services : optimization modelling /." Hong Kong : University of Hong Kong, 2000. http://sunzi.lib.hku.hk/hkuto/record.jsp?B22050425.

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Sandell, Markus. "Modelling and Power Optimization of a Hybrid Vehicle Refrigeration System." Thesis, KTH, Optimeringslära och systemteori, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-236084.

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This thesis is concerned with the modelling and power optimization of a vapor compression refrigeration system in a hybrid vehicle. The system consists of a compressor, a condenser, two expansion valves, an evaporator and a chiller. The achieved model describes the states of the system and the total power consumption of the components when the system is in balance, i.e. there is no time dependencies of the variables. The model is based on thermodynamic laws and properties together with empirical parameters which are estimated from given data of a refrigeration system. A comparison is made betw

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Caramia, Gabriele <1991&gt. "Modelling and Optimization of Energy Management Strategies for Hybrid Vehicles." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2020. http://amsdottorato.unibo.it/9248/1/GabrieleCaramia_PhDThesis.pdf.

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In the last decades the automotive sector has seen a technological revolution, due mainly to the more restrictive regulation, the newly introduced technologies and, as last, to the poor resources of fossil fuels remaining on Earth. Promising solution in vehicles’ propulsion are represented by alternative architectures and energy sources, for example fuel-cells and pure electric vehicles. The automotive transition to new and green vehicles is passing through the development of hybrid vehicles, that usually combine positive aspects of each technology. To fully exploit the powerful of hybrid

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Pontefisso, Alessandro. "MODELLING AND OPTIMIZATION OF THE MECHANICAL PROPERTIES OF POLYMER NANOCOMPOSITES." Doctoral thesis, Università degli studi di Padova, 2015. http://hdl.handle.net/11577/3423896.

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The research activity here reported spans different areas of the nanocomposite material science, giving a contribution toward the advancement in its state of the art. The study of the effects of the filler distribution on the mechanical properties of nanomodified polymers is a major research topic which is carried out. Different computational and theoretical approaches have been developed, considering statistics, finite element analyses and micromechanics. Several nanomodified epoxy resins have been manufactured along with glass fibre reinforced laminates with nanomodified matrix. The effe

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Paranhos, R. P. R. "Numerical method for the prediction and optimization of welding procedures." Thesis, Cranfield University, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.278704.

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Mahar, Mumtaz Hussain. "Network optimization and its applications to discrete programming problems." Thesis, Brunel University, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.294509.

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