Дисертації з теми "Dual scale"
Оформте джерело за APA, MLA, Chicago, Harvard та іншими стилями
Ознайомтеся з топ-50 дисертацій для дослідження на тему "Dual scale".
Біля кожної праці в переліку літератури доступна кнопка «Додати до бібліографії». Скористайтеся нею – і ми автоматично оформимо бібліографічне посилання на обрану працю в потрібному вам стилі цитування: APA, MLA, «Гарвард», «Чикаго», «Ванкувер» тощо.
Також ви можете завантажити повний текст наукової публікації у форматі «.pdf» та прочитати онлайн анотацію до роботи, якщо відповідні параметри наявні в метаданих.
Переглядайте дисертації для різних дисциплін та оформлюйте правильно вашу бібліографію.
Model, Eric. "Creation and validation of the dual motivation profile scale." [Gainesville, Fla.] : University of Florida, 2005. http://purl.fcla.edu/fcla/etd/UFE0010101.
Повний текст джерелаTahir, Mohammad Waseem. "Dual Scale Porosity and Interlaminar Properties of Composite Materials." Doctoral thesis, KTH, Lättkonstruktioner, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-145718.
Повний текст джерелаQC 20150602
Marcia, Roummel F. "Primal-dual interior-point methods for large-scale optimization /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2002. http://wwwlib.umi.com/cr/ucsd/fullcit?p3044769.
Повний текст джерелаGowers, Richard. "Developing dual-scale models for structured liquids and polymeric materials." Thesis, University of Manchester, 2016. https://www.research.manchester.ac.uk/portal/en/theses/developing-dualscale-models-for-structured-liquids-and-polymeric-materials(edfe6991-79de-45a9-84e4-9e9dfb68faa4).html.
Повний текст джерелаBalakrishnan, Anantaram, Thomas L. Magnanti, and Richard T. Wong. "A Dual Ascent Procedure for Large Scale Uncapacitated Network Design." Massachusetts Institute of Technology, Operations Research Center, 1987. http://hdl.handle.net/1721.1/5072.
Повний текст джерелаTiziani, Cristina. "Processing and mechanical behaviour of dual scale particle strengthened copper." Tönning Lübeck Marburg Der Andere Verl, 2007. http://d-nb.info/986924059/04.
Повний текст джерелаCarr, Elliot Joseph. "Exponential integrators and a dual-scale model for wood drying." Thesis, Queensland University of Technology, 2012. https://eprints.qut.edu.au/58742/1/Elliot_Carr_Thesis.pdf.
Повний текст джерелаHassard, Patrick. "Dual-scale modelling of two-dimensional flow in porous media." Thesis, Queensland University of Technology, 2021. https://eprints.qut.edu.au/211518/1/Patrick_Hassard_Thesis.pdf.
Повний текст джерелаNeacsu, Valentin. "Modeling and measurement of micro flow in dual scale porous media." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 280 p, 2010. http://proquest.umi.com/pqdweb?did=1998445961&sid=7&Fmt=2&clientId=8331&RQT=309&VName=PQD.
Повний текст джерелаWright, Stephen E. "Convergence and approximation for primal-dual methods in large-scale optimization /." Thesis, Connect to this title online; UW restricted, 1990. http://hdl.handle.net/1773/5751.
Повний текст джерелаMadabushi, Ananth R. "Lagrangian Relaxation / Dual Approaches For Solving Large-Scale Linear Programming Problems." Thesis, Virginia Tech, 1997. http://hdl.handle.net/10919/36833.
Повний текст джерелаMaster of Science
Hu, Lin. "Oxidation of Single and Dual Phase NiCrAl(Y) Bond Coat Alloys." Cleveland, Ohio : Case Western Reserve University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=case1253714943.
Повний текст джерелаTitle from PDF (viewed on 2009-12-22) Department of Materials Science and Engineering Includes abstract Includes bibliographical references and appendices Available online via the OhioLINK ETD Center
Ashari, Alireza. "Dual-Scale Modeling of Two-Phase Fluid Transport in Fibrous Porous Media." VCU Scholars Compass, 2010. http://scholarscompass.vcu.edu/etd/2326.
Повний текст джерелаBarnett, Nina (Kuentzer). "Permeability characterization and microvoid prediction during impregnation of fiber tows in dual-scale fabrics." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file 2.70 Mb., 144 p, 2006. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pqdiss&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:1430754.
Повний текст джерелаSuwanpinij, Piyada [Verfasser]. "Multi-scale modelling of hot rolled dual-phase steels for process design / Piyada Suwanpinij." Aachen : Hochschulbibliothek der Rheinisch-Westfälischen Technischen Hochschule Aachen, 2013. http://d-nb.info/1030517010/34.
Повний текст джерелаUlular, Osman. "A primal-dual conjugate subgradient algorithm for large- scale/specially structured linear programming problems." Diss., Virginia Polytechnic Institute and State University, 1988. http://hdl.handle.net/10919/77750.
Повний текст джерелаPh. D.
Wong, John Kam-wing. "Three-dimensional multi-scale hydraulic fracturing simulation in heterogeneous material using Dual Lattice Model." Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/270542.
Повний текст джерелаCao, Zhi. "Large-scale spatially extended atmospheric pressure plasma." Thesis, Loughborough University, 2010. https://dspace.lboro.ac.uk/2134/6688.
Повний текст джерелаJoseph, Deepu Sebastian. "Wavelet Based Dual Time Scale Method for the Analysis of Cyclic Deformation of Polycrystalline Materials." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1261489948.
Повний текст джерелаRahman, Md Hafizur. "Novel measurement of solids circulation rate in pilot-scale dual fluidized bed gasifier at high temperature." Thesis, University of British Columbia, 2017. http://hdl.handle.net/2429/64150.
Повний текст джерелаApplied Science, Faculty of
Chemical and Biological Engineering, Department of
Graduate
Beaugeais, Katia. "Dual Role of a Composer-Performer: Creative Collaboration in New Australian Saxophone Music and Large-Scale Works." Thesis, The University of Sydney, 2021. https://hdl.handle.net/2123/24991.
Повний текст джерелаMukherjee, Valmiki. "A Dual Dielectric Approach for Performance Aware Reduction of Gate Leakage in Combinational Circuits." Thesis, University of North Texas, 2006. https://digital.library.unt.edu/ark:/67531/metadc5255/.
Повний текст джерелаHemmer, Julie. "Hydro-mechanical coupling in a deformable dual-scale fibrous reinforcement : from mesoscale characterization and modeling to liquid resin infusion process simulation." Thesis, Ecole centrale de Nantes, 2018. http://www.theses.fr/2018ECDN0044/document.
Повний текст джерелаA current aim of wind turbine industries is to produce large structural parts at reduced costs. In this context, manufacture composite blades made of quasi-unidirectional non-crimp fabrics (quasi-UD NCF) using the infusion process is competitive on both mechanical and cost aspects. The infusion process involves an unloading phenomenon due to the vacuum bag flexibility. Additionally, during the impregnation, NCFs exhibit a dual-scale flow. Usual modeling of both phenomena assumes that the fibrous preform is a continuous medium with a varying permeability. Nonetheless, the permeability is affected by the meso-pores size and spatial distribution, which depend on the compaction state. The goal of this thesis is thus to characterize experimentally the flow-induced microstructural evolution of a quasi-UD NCF during the infusion process, and to quantify the impact of thismicrostructural reorganization on relevant macroscopic parameters, such as modelled in-plane permeability as well as computed filling time of parts. In situ infusion process has been conducted inside X-ray Computed Tomography device to capture a dual-scale fibrous microstructure prior and after the infusion process. Additionally, a simplified model has been proposed to predict the in-plane permeability and thus to evaluate the influence of the microstructural reorganization on it. Then, a numerical tool has been developed to account for dual-scale flow in a bidisperse deformable fibrous media. The impact of the dual-scale unloading on themacroscopic filling time of parts has been established. A mechanical investigation of the towbehavior during the infusion process has been additionally carried out experimentally to better understand the quasi-UD NCF behavior. From these results, a hyperelastic model has been proposed to predict the 3D mechanical behavior of tows during the dry loading phase, prior to the infusion process
Theisen, Johannes. "Joint use of dual-frequency electrowetting and interferometry in a digital microsystem : application to evaporation and surface ageing at drop scale." Thesis, Grenoble, 2013. http://www.theses.fr/2013GRENI084/document.
Повний текст джерелаThis PhD research is thought of as a first step towards label freedigital biosensing. A novel transduction mechanism is developed, based on thegeneration of capillary waves along a drop surface induced by dual-frequencyelectrowetting. Acapillary resonance is measured by interferometry at the movingdrop apex. Aproof of concept of this electro-optical methodology for furtherintegration in a digital microsystem is given with characterization of drop evaporationkinetics. A second part focuses on modeling and numerical calculationsof the transport of surface active biomolecules in the drop. The model includesdiffusion, ad-/desorption phenomena together with a kinematic condition of avariable drop radius (evaporation) as well as a finite molecular amount of surfaceactive biomolecules. A dimensionless number is suggested to take into accountfinite size effects. Drop steady streaming due to oscillating electrowetting isfinally taken into account. Low- and high-frequency electrowetting is appliedto a drop laden with bovine serum albumin. By jointly using interferometry andimaging, enhancement of surface ageing is made evident under electrowetting
Khanal, Prayash. "Ammonium and orthophosphate ions removal from source separated human urine using dual reactive filters: A small scale laboratory study in a batch mode." Thesis, KTH, Mark- och vattenteknik (flyttat 20130630), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-171845.
Повний текст джерелаBancora, Simone. "Characterization of fabric layups by pressure print analysis and simulation of dual-scale flow based on topological skeletonization : application to composite materials processing." Thesis, Ecole centrale de Nantes, 2021. http://www.theses.fr/2021ECDN0049.
Повний текст джерелаIn this work, we study continuous fiber preforms in the context of Resin Transfer Moulding (RTM) processes. The aim of the thesis is two-fold: propose a new methodology to obtain mesoscale geometrical data from preforms and provide a new numerical model able to predict permeability or perform mesoscale filling simulations in a computationally efficient way. In the first part, the focus is on the acquisition of geometrical data from preforms: we propose a novel methodology based on the analysis of the pressure field experienced by a dry preform under compaction. By using a commercial pressure-sensitive film, the pressure field exerted by a stack of layers against mould walls is captured and analyzed. Taking advantage of the periodic morphology of textiles, geometric patterns revealed by the pressure field are interpreted according to spectral Moiré analysis to recover the orientation and spatial distribution of each individual layer in the stack. In the second part, the reconstructed digital architecture of the preform is used to carry out numerical flow simulations at the scale of the yarns, to characterize permeability of the stack or directly perform filling simulations. The stack geometry is replaced by a skeletonized representation of the same, on which a two-dimensional flow problem can be solved numerically, greatly reducing the computational cost when compared to a full 3D approach. This “medial skeleton” model is first formulated in its single-scale version (flow in channels) and then extended to dual-scale (flow in channels and yarns). The model potential is illustrated through several test cases. This research establishes a pathway going from the non-destructive acquisition of data to the simulation of the dual-scale flow inside a multi-layer layup of textiles
Gardenghi, John Lenon Cardoso. "Um método de pontos interiores primal-dual viável para minimização com restrições lineares de grande porte." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/45/45134/tde-11072014-084756/.
Повний текст джерелаIn this work, we propose an interior-point method for large-scale linearly constrained optimization. This method explores the linearity of the constraints, starting from a feasible point and preserving the feasibility of the iterates. We present the main global convergence results, together with a rich description of the implementation details of all the steps of the method. To validate the implementation of the method, we present a wide set of numerical experiments and a comparative analysis with well known softwares of the continuous optimization community.
Soares, Gambarini Gabriela. "Influence of highly contrasted dual-scale porosity carbon interlock fabrics on permeability, flow-induced deformation and saturation during CRTM process : Experimental characterization and modeling." Electronic Thesis or Diss., Ecole centrale de Nantes, 2023. http://www.theses.fr/2023ECDN0018.
Повний текст джерелаA primary objective of this thesis is to developa permeability measurement methodology thataccurately characterizes the full permeabilitytensor of a carbon interlock fabric used in themanufacture of aircraft turbine blades using theC-RTM process. The unique characteristics ofthe fabric, including its high thickness andstiffness, its non-transparent fibers and itspronounced dual-porosity scale, presentchallenges when using traditional measurementtechniques.In order to measure the full permeability tensoreconomically and over a wide range of fibervolume fractions, a combination of experimentalmethods has been proposed and applied.The development of an experimental testbench to measure saturation during injectionand the influence of its very strong doubleporosity scale is presented. The results arecomplemented by preliminary mesoscopicnumerical modelling of a representativesimplified geometry.The challenges posed by the pronounceddouble scale of the pore space and the resultingmodes of impregnation of the interlocked fabricjustify the proposed approach of combiningexperimental analysis and modelling, whichmust be pursued in order to study thesemechanisms in greater depth
Silveti, Falls Antonio. "First-order noneuclidean splitting methods for large-scale optimization : deterministic and stochastic algorithms." Thesis, Normandie, 2021. http://www.theses.fr/2021NORMC204.
Повний текст джерелаIn this work we develop and examine two novel first-order splitting algorithms for solving large-scale composite optimization problems in infinite-dimensional spaces. Such problems are ubiquitous in many areas of science and engineering, particularly in data science and imaging sciences. Our work is focused on relaxing the Lipschitz-smoothness assumptions generally required by first-order splitting algorithms by replacing the Euclidean energy with a Bregman divergence. These developments allow one to solve problems having more exotic geometry than that of the usual Euclidean setting. One algorithm is hybridization of the conditional gradient algorithm, making use of a linear minimization oracle at each iteration, with an augmented Lagrangian algorithm, allowing for affine constraints. The other algorithm is a primal-dual splitting algorithm incorporating Bregman divergences for computing the associated proximal operators. For both of these algorithms, our analysis shows convergence of the Lagrangian values, subsequential weak convergence of the iterates to solutions, and rates of convergence. In addition to these novel deterministic algorithms, we introduce and study also the stochastic extensions of these algorithms through a perturbation perspective. Our results in this part include almost sure convergence results for all the same quantities as in the deterministic setting, with rates as well. Finally, we tackle new problems that are only accessible through the relaxed assumptions our algorithms allow. We demonstrate numerical efficiency and verify our theoretical results on problems like low rank, sparse matrix completion, inverse problems on the simplex, and entropically regularized Wasserstein inverse problems
Qaadan, Sahar [Verfasser], Tobias [Gutachter] Glasmachers, and Laurenz [Gutachter] Wiskott. "Budgeted stochastic coordinate ascent for large-scale kernelized dual support vector machine training / Sahar Qaadan ; Gutachter: Tobias Glasmachers, Laurenz Wiskott ; Fakultät für Elektrotechnik und Informationstechnik." Bochum : Ruhr-Universität Bochum, 2020. http://d-nb.info/1202608981/34.
Повний текст джерелаQa'adan, Sahar [Verfasser], Tobias [Gutachter] Glasmachers, and Laurenz [Gutachter] Wiskott. "Budgeted stochastic coordinate ascent for large-scale kernelized dual support vector machine training / Sahar Qaadan ; Gutachter: Tobias Glasmachers, Laurenz Wiskott ; Fakultät für Elektrotechnik und Informationstechnik." Bochum : Ruhr-Universität Bochum, 2020. http://d-nb.info/1202608981/34.
Повний текст джерелаKumar, Ravi R. "NUMERICAL INVESTIGATION AND PARALLEL COMPUTING FOR THERMAL TRANSPORT MECHANISM DURING NANOMACHINING." UKnowledge, 2007. http://uknowledge.uky.edu/gradschool_theses/425.
Повний текст джерелаPhilippot, Clément. "Etude des mécanismes de précipitation, de recristallisation et de transformation de phases dans les aciers Dual Phase microalliés au titane niobium lors du recuit." Thesis, Aix-Marseille, 2013. http://www.theses.fr/2013AIXM4342.
Повний текст джерелаLightening the weight of vehicles is one of the main challenging objectives of the automotive industry to reach the environmental regulation in term of CO2 emissions. The development of multiphase high strength steels is a common solution to reduce the thickness of sheet steel used in vehicles while keeping the same level of passenger’s safety requirements. The present study deals with the optimization of industrial process parameters applied to obtain one of these steels: the high strength microalloyed Dual Phase steels; i.e. with ultimate tensile strength superior to 800MPa.From an initial cold rolled microstructure made of bainite + martensite, the phenomena occurring during the annealing are characterized since the heating up to the end of the intercritical holding. The influence of process parameters as the heating rate, the holding temperature and the holding time are studied. The triple interactions system between the precipitation of microalloying elements, the recrystallization and the austenite formation is the core of the problem. A scenario of microstructural evolutions has been established based on the characterized phenomena. The studied fine microstructure (sub-microns) requires the combination of multiscale characterization techniques: SEM, TEM, atom probe tomography, nano-SIMS
Uran, Matthias [Verfasser], Axel [Gutachter] Klawonn, Oliver [Gutachter] Rheinbach, and Jörg [Gutachter] Schröder. "High-Performance Computing Two-Scale Finite Element Simulations of a Contact Problem Using Computational Homogenization - Virtual Forming Limit Curves for Dual-Phase Steel / Matthias Uran ; Gutachter: Axel Klawonn, Oliver Rheinbach, Jörg Schröder." Köln : Universitäts- und Stadtbibliothek Köln, 2020. http://d-nb.info/1215837089/34.
Повний текст джерелаRatheesh, Greeshma. "Fabrication of hierarchical scaffold and the development of patient-specific bioink for bone tissue engineering." Thesis, Queensland University of Technology, 2021. https://eprints.qut.edu.au/210168/1/Greeshma_Ratheesh_Thesis.pdf.
Повний текст джерелаImbert, Mathieu. "High speed reactive RTM with on-line mixing in dualscale fibrous reinforcements : Experimental and numerical developments and investigations." Thesis, Ecole centrale de Nantes, 2017. http://www.theses.fr/2017ECDN0017/document.
Повний текст джерелаHigh Speed Resin Transfer Molding (RTM) is a promising composite manufacturing process fitting automotive industry requirements to produce complex structural parts with a perspective of short cycle times. However, cycle time reductions are a real challenge. In this process, a resin mixed on-line with curing agents is injected in the cavity of a mold containing a fibrous reinforcement. This flow of reactive resin generates acomplex flow pattern and strong thermo-chemo rheological couplings. Due to the high sensitivity of the resin cure, and the tight cycle times, prediction of the optimal injection strategy is very difficult and very expensive to conduct experimentally. In this context, two goals where followed in this work: 1. Identify and quantify experimentally the mechanisms, related to the process or to the reinforcement, influencing the reactive RTMprocess with on-line mixing and 2. Develop a numerical simulation method in a view of introducing the identified mechanisms in the industrial software PAMCOMPOSITE developed by ESI Group. Identification and quantification of the mechanisms were realized thanks to experimental investigations and numerical simulations. A new experimental setup has been developed for the investigation of the mechanism of intra-tow resin storage through macro-scale and micro-scale observations. Additionally, a numerical method has been developed to simulate the reactive flow of a resin in single and dual scale porous materials. This method allowed both to investigate local mechanisms difficult to study experimentally and prepare the transfer to the industrial software of ESI
Bird, Gareth Edward. "The coupled dual boundary element-scaled boundary finite element method for efficient fracture mechanics." Thesis, Durham University, 2012. http://etheses.dur.ac.uk/6996/.
Повний текст джерелаAnand, Vivek. "Modelling and Control of a Dual Sided Linear Induction Motor for a scaled Hyperloop Pod." Thesis, KTH, Fordonsdynamik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-285801.
Повний текст джерелаElektrifieringstiden har präglats av en ökning i volym av elfordon som direkt eller indirekt drivs med el. Järnvägar, vägar och luftvägar elektrifieras just nu med deras respektive takt. Utöver det kommer kommande koncept för transportlösning som hyperloop som också beskrivs som det femte transportsättet att elektrifieras. Detta examensarbete bygger på att utveckla modellen och regleringen av framdrivningssystemet för en nedskalad Hyperloop-pod utvecklad av studentteamet KTH Hyperloop som representerar KTH. Teamet tävlar i Hyperloop-tävlingen organiserad av SpaceX och målet är att uppnå högsta möjliga hastighet på ett visst avstånd och spår framtaget av SpaceX. För att uppnå målet om att vara snabbast använder den nedskalade podden en dubbelsidig elektrisk linjär induktionsmotor (DSLIM) som nämns i det följande kapitlet. Den elektriska motormodelleringen görs i Simulink och liknar en roterande induktionsmotor(RIM). Men närvaron av ’end effect’ i DSLIM gör den annorlunda än RIM och har diskuterats därefter. Styrstrategin använder en synkron ram-PI-styrning för strömstyrning och sensorbaserad hastighetsreglering för att styra hastigheten på podden. Varvtalsstyrningsutgången är en referensström som används som en ingång till den nuvarande styrenheten som slutligen ger spänning som slutling styrning. Motsvarande bandbredd för de olika slingorna har beräknats baserat på elektriska motorparametrar som diskuterats i metodavsnittet.Valideringen av elmotormodellen och motsvarande styrenhet har diskuterats i resultatsektionen, där noggrannheten hos styrenheten för den konstruerade modellerna diskuteras.
Hairaye, Camille. "Fonctionnalisation de surfaces par microstructuration laser." Thesis, Strasbourg, 2017. http://www.theses.fr/2017STRAD013/document.
Повний текст джерелаThis PhD thesis is about surface functionalization by laser microstructuring. The experimental study consists in texturing stainless steel surfaces with a pulsed Yb fibre laser source (1030 nm, 300 fs), in order to control their wettability and confer to them superhydrophobic properties. With an optimization of the irradiating conditions on the target, it is possible to confer to the surface a dual-scale roughness. By successive ablations according to a pattern of crossed lines, microstructures in the range of tens of micrometres are realized, on which self-organized nanostructures are superimposed. Simulation of the energy coupling in the material allows to determine the process parameters to be used, in order to limit the thermal accumulation and avoid the melting of the surface. This study reveals the role of the laser texturing in the apparition of the superhydrophobic character and emphasizes the influence of the physicochemical properties of the material
Klayman, Benjamin Joseph. "A quantitative description at multiple scales of observation of accumulation and displacement patterns in single and dual-species biofilms." Diss., Montana State University, 2007. http://etd.lib.montana.edu/etd/2007/klayman/KlaymanB0807.pdf.
Повний текст джерелаCordesse, Pierre. "Contribution to the study of combustion instabilities in cryotechnic rocket engines : coupling diffuse interface models with kinetic-based moment methods for primary atomization simulations." Thesis, université Paris-Saclay, 2020. http://www.theses.fr/2020UPASC016.
Повний текст джерелаGatekeepers to the open space, launchers are subject to intense and competitive enhancements, through experimental and numerical test campaigns. Predictive numerical simulations have become mandatory to increase our understanding of the physics. Adjustable, they provide early-stage optimization processes, in particular of the combustion chamber, to guaranty safety and maximize efficiency. One of the major physical phenomenon involved in the combustion of the fuel and oxidizer is the jet atomization, which pilotes both the droplet distributions and the potential high-frequency instabilities in subcritical conditions. It encompasses a large sprectrum of two-phase flow topologies, from separated phases to disperse phase, with a mixed region where the small scale physics and topology of the flow are very complex. Reduced-order models are good candidates to perform predictive but low CPU demanding simulations on industrial configurations but have only been able so far to capture large scale dynamics and have to be coupled to disperse phase models through adjustable and weakly reliable parameters in order to predict spray formation. Improving the hierarchy of reduced order models in order to better describe both the mixed region and the disperse region requires a series of building blocks at the heart of the present work and give on to complex problems in the mathematical analysis and physical modelling of these systems of PDE as well as their numerical discretization and implementation in CFD codes for industrial uses. Thanks to the extension of the theory on supplementary conservative equations to system of non-conservation laws and the formalism of the multi-fluid thermodynamics accounting for non-ideal effects, we give some new leads to define a strictly convex mixture entropy consistent with the system of equations and the pressure laws, which would allow to recover the entropic symmetrization of two-phase flow models, prove their hyperbolicity and obtain generalized source terms. Furthermore, we have departed from a geometric approach of the interface and proposed a multi-scale rendering of the interface to describe multi-fluid flow with complex interface dynamics. The Stationary Action Principle has returned a single velocity two-phase flow model coupling large and small scales of the flow. We then have developed a splitting strategy based on a Finite Volume discretization and have implemented the new model in the industrial CFD software CEDRE of ONERA to proceed to a numerical verification. Finally, we have constituted and investigated a first building block of a hierarchy of test-cases designed to be amenable to DNS while close enough to industrial configurations in order to assess the simulation results of the new model but also to any up-coming models
Léon, Olivier. "Étude du rayonnement acoustique d'instabilités hydrodynamiques de jets double-flux par les équations de stabilité parabolisées (PSE)." Phd thesis, Toulouse, INPT, 2012. http://oatao.univ-toulouse.fr/9138/1/leon_partie_1_sur_2.pdf.
Повний текст джерелаAl-Kanaan, Adnan Jabbar Jadoa [Verfasser]. "Heat stress response for physiological traits in dairy and dual purpose cattle populations on phenotypic and genetic scales / Adnan Jabbar Jadoa Al-Kanaan." Kassel : Universitätsbibliothek Kassel, 2016. http://d-nb.info/1093437901/34.
Повний текст джерелаAbdel, Rahman Mahmoud Rania. "Toward the building of a local criteria of vascular lesion at the microscopical scale using homogenization." Strasbourg, 2010. https://publication-theses.unistra.fr/restreint/theses_doctorat/2010/ABDEL_RAHMAN_MAHMOUD_Rania_2010.pdf.
Повний текст джерелаAcute subdural hematoma (ASDH) is a potentially devastating, yet curable extra axial fluid collection within the potential subdural space. It is classically associated with tearing of the bridging veins (BVs) caused by the brain–skull relative motion. In the current work, we tried to develop an analytical tool to be used in the prediction of ASDH arising from this type of lesion. The homogenization technique based on asymptotic expansion was applied, on the macro–meso scale, in order to find the effective mechanical properties of the brain–skull interface region. These properties were then incorporated into a finite element model of the human head to get the global stress–strain behavior in the elements of the interface region and the stretch strain in BVs. In addition, the mechanical behavior of the subarachnoid and subdural portions of the BV was investigated. Moreover, a meso–micro homogenization technique was applied on the BV wall to get the local mechanical behavior within the collagen fibers and the elastin matrix. Finally, a failure criterion for the BVs was developed defining the rupture location and the threshold of the rotational acceleration of the human head that cause the failure of the vein
Prado, Claudia. "Ensino-aprendizagem da escala de coma de Glasgow: análise de duas técnicas em enfermeiros do serviço de emergência." Universidade de São Paulo, 2001. http://www.teses.usp.br/teses/disponiveis/7/7135/tde-30032007-115512/.
Повний текст джерелаConsidering the fact that there is the need to standardize nurses in relation to evaluating the level of consciousness in patients attended in emergency department (ED), by making use of the Glasgow Coma Scale (GCS), one questions which teaching-learning techniques are more adequate. The present study, limited to measuring the acquisition of knowledge regarding this topic, had the objective of analysing two teaching-learning techniques, one of them through lecturing with slides and the other one through guided reading, among nurses working in ED in the city of São Paulo. These nurses were subdivided into two groups aiming at: classifying them in relation to some variables such as their social-demographic status, professional improvement and use of GCS; measuring their level of previous knowledge by giving them a test about GCS, before applying both techniques; verifying the level of knowledge acquisition using the same test, after applying both techniques. Data collection was carried out with previously-selected hospitals drawn in relation to the technique to be applied; this data collection took place between the end of 1999 and beginning of 2000. Group 1 consisted of nurses from the drawn hospitals where lecturing with slides would be applied, whereas Group 2 was involved with guided reading. When analysing both groups of nurses statistically-significant differences in relation to age brackets, how long they had been graduated for and usage of GCS arose. Nurses in Group 1 were younger, mostly between 22 and 25 (45.5%), had been graduated for less than 4 years (72.7%) and in their great majority mentioned using GCS at times (72.7%). In contrast, nurses in Group 2 were over 31 years old (86.3%) and among these, 40.9% were over 41, had been graduated for a wider range of time (more than half for over a five-year´s time), and over one third (36.4%) of the nurses in this group mentioned never using GCS while 40.9% mentioned using it at times. The other variables were more homogeneous, with a predominance of female single nurses coming from schools in Greater São Paulo with an experience at ED of less than 5 years and a variedly-low attendance in continued education courses, except for Basic Life Support (BLS), frequented by 45.5% of the nurses in Group 1. When measuring nurses´level of previous knowledge, during the adding up of points, it was revealed that both groups scored higher than 50% of the correct answers; those in Group 1 reached 273 points (62%) out of 440; those in Group 2 obtained 231 points (52.5%). In relation to knowledge acquisition, after the application of both teaching-learning techniques, it was noticed that Group 1, as a whole, presented a statistically- significant improvement of 29.8% when comparing the fases before and after the process; this group also presented high rates of correct answers in several questions already during the pre-fase and a statistically-significant increase in knowledge as well in most questions, mainly in those related to practical application. Although Group 2 as a whole presented a statistically-significant increase (8.2%), when comparing the fases before and after the process, this group remained inconclusive due to an important intervening factor: 55% of its members did not read the texts. However, when analysing each question, it became clear that less than half of the questions (41%) were correctly answered by over 50% of the members in this group during the pre-fase, a fact which shows the precariousness of their previous knowledge and the need to bridge these gaps. Even though the results obtained in this research point out the superiority of lecturing with slides in relation to guided reading, including nurses higher interest in participating, this conclusion must be interpreted in terms since reading to update knowledge does not seem to be an everyday activity for these nurses
Flores, Aviles Gabriela Patricia. "A groundwater basin multidisciplinary approach to conceptualize subsurface flow and trace nitrate contamination sources. Lake Titicaca, Bolivia." Thesis, Université Grenoble Alpes (ComUE), 2019. http://www.theses.fr/2019GREAU019.
Повний текст джерелаWater quality degradation, climate variability and population growth are among the factors that constrains water availability in the semi-arid Katari and Lago Menor region (6,350 Km^2), leading to an increasingly exploitation of groundwater resources. This thesis aims to conceptualize subsurface flow and trace nitrate contamination sources in the groundwater system within the Katari and Lago Menor Region.A multidisciplinary approach for field investigation was used in this study, including a regional groundwater source inventory and groundwater level measurements, geophysical investigation techniques (e.g. TDEM-Time Domain ElectroMagnetic soundings), piezometer construction and installation, and a regional sampling campaign and analysis for major ion chemistry and dual isotopes of 15N-NO3 and 18O-NO3.The results allowed identifying the limits of two different geological settings (Piedmont subsystem and Lacustrine plain), the geometry of the Quaternary porous geologic media and the bottom boundaries of the aquifer.The groundwater flow regime corresponds to a classical gravity-driven regional flow system. Six subdomains possessing different hydraulic properties were identified. A large portion of the aquifer presents an unconfined behaviour, particularly on the Piedmont, whereas it remains confined in the plain areas. The thickness of the unconfined portion varies from 50 to 150 meters. Values of hydraulic conductivity for the unconfined portion range from 1.1E-04 to 5.9E-08 m/sec, specific yield ranges from 0.16 to 0.20 and recharge values range from 118 to 382 mm/year. While for the confined part the transmissivity values range around 6.0E-06 m^2/sec with a storavity value of 1.2E-02 to 6.0E-03.In the high Piedmont areas where the hydraulic heads are high, the low mineralization and the chemical and isotopic compositions showed that the groundwater source is of good quality. In contrast, in the lower sector of the Piedmont, the shallower water tables of the alluvial-fluvioglacial-lacustrine sequence, make this area more vulnerable to contamination. Chemical facies and the isotopic composition of the dissolved NO3 revealed that the main origin of this anion is related to nitrogen fertilizers towards the NW of the Piedmont and human/animal waste towards the SE. Moreover, natural nitrate attenuation processes occur mainly in the lower sector of the Piedmont, when groundwater mixes with the reservoir of lacustrine origin. Groundwater flowing in the plain areas, present primarily Na(K)-Cl facies relating the presence of evaporites. In this area groundwater is prone to contamination, especially when the clay layer is absent and in places where a connection to the Piedmont is evidenced (subterranean channels). The contribution of groundwater to the current Lake Titicaca (Cohana Bay) appears to be retarded due to the presence of the clay layer.This basin-scale conceptual groundwater flow model provides a good understanding of the aquifer functioning, and a guide to future data collection, in order to improve the robustness of future groundwater flow numerical modeling. All the science-based information generated from this research was arranged into a GIS spatial database to support decision makers in the management and protection of groundwater resources. This science-based information also contributes to the environmental remediation of Lake Titicaca, a national priority for the Plurinational State of Bolivia
Santini, Manuela Favarin. "Comparação entre duas associações de analgésicos não opioides e opioides no controle da dor do abscesso dentoalveolar agudo em evolução : um ensaio clínico randomizado." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2015. http://hdl.handle.net/10183/116478.
Повний текст джерелаAim: To evaluate the management of pain in Endodontics by two studies: Article 1 - a randomized clinical trial comparing the analgesic efficacy of two opioids and non-opioid associations in the pain control of Acute Dentoalveolar Abscess (ADA); Article 2 - a systematic review investigating the efficacy and safety of analgesic therapy in the management endodontic pain.Methodology: The Article 1 included 24 patients that looked for emergency treatment in a university dental clinic. These patients were divided into two groups: Co / Pa - prescription of codeine (30 mg) + acetaminophen (500 mg) oral, every 4 h, during 3 days; Tr / Ac - prescription of tramadol hydrochloride (37.5 mg) + acetaminophen (500 mg) as the previous group. Pain scores were recorded by the patient at 6, 12, 24, 48, and 72 h after treatment, in a pain diary, using the Visual Analogue Scale (VAS). The Article 2 was conducted in electronic databases, gray literature, and references of retrieved articles to analyze randomized clinical trials or systematic reviews with or without meta-analysis. One arms of the therapy should have comprised an anti-inflammatory or analgesic drugs, orally administered by adults, in order to control moderate to severe pain, measured by Visual Analogue Scale, cause by endodontic problems . Data were collected regarding the characteristics of the sample, scores of pretreatment pain, characteristics of compared groups, methodological quality aspects, additional analgesic use, and frequency of adverse events. Descriptive and inferential analyzes were performed. Results: In Article 1, in both groups there was a reduction in the pain scores over time. For Co/Ac group, it was found a significant reduction in the scores at 12, 24, 48, and 72 hours after treatment (P <0.05). The scores at 48 and 72 hours were lower, compared to immediate treatment and scores at 6 hours after treatment (P <0.05). In the Tr/ Ac group, the scores decreased as the time is increasing (P <0.05). For all time intervals tested, the groups were not significantly different (P> 0.05). Both treatments were effective in controlling pain caused by ADA. The association Tr/ Ac presented itself less secure. In Article 2, a total of 431 references and 419 abstracts were reviewed, then only 14 articles were read in full. From these articles it was excluded 5 and 9 trials met the inclusion criteria. These studies compared acetaminophen, NSAIDs (ibuprofen, flurbiprofen, ketorolac tromethamine, etodolac, and tenoxicam), prednisolone, and analgesic tramadol associations for treating moderate to severe endodontic pain. It was observed that drugs were administered before or after endodontic therapy. In 8 studies, the control group was placebo and 8 studies used single dose regimen to assess pain control. In all clinical trials, the primary outcome analyzed was the reduction of scores in pain and secondary outcomes were the utilization of additional medication and adverse reactions. It was possible to establish a significant relationship between use of additional analgesics and periapical diagnosis. When the administration occurred before the endodontic procedure no adverse events were observed. When it was administered after the procedure, adverse reactions were reported in 2 of 3 trials included in the analysis. Conclusion: The Article 1 suggests that, considering analgesic efficacy and safety function, the association codeine/ acetaminophen is more effective for the control moderate to severe pain, at the treatment of ADA in evolution. The Article 2 found that there is a lack of RCTs in Endodontics using the same methodological standard to define a systemic treatment protocol of endodontic pain.
Campos, Marcio José da Silva. "Estudo da experiência de dor e do status imunológico em adultos e crianças durante duas fases do tratamento ortodôntico." Universidade Federal de Juiz de Fora (UFJF), 2010. https://repositorio.ufjf.br/jspui/handle/ufjf/3895.
Повний текст джерелаApproved for entry into archive by Adriana Oliveira (adriana.oliveira@ufjf.edu.br) on 2017-03-30T11:19:31Z (GMT) No. of bitstreams: 1 marciojosedasilvacampos.pdf: 1176619 bytes, checksum: 2a8507a8f5f473e63daeeccfac1ec957 (MD5)
Made available in DSpace on 2017-03-30T11:19:31Z (GMT). No. of bitstreams: 1 marciojosedasilvacampos.pdf: 1176619 bytes, checksum: 2a8507a8f5f473e63daeeccfac1ec957 (MD5) Previous issue date: 2010-02-09
CAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
A Dor é comumente relatada durante o tratamento ortodôntico, sendo proveniente da força aplicada aos dentes e de lesões traumáticas na mucosa bucal, onde a Imunoglobulina A secretora (sIgA) é a principal proteção e pode participar na manutenção da sua integridade. A dor pode aumentar o estresse psicológico, que relaciona-se com a alfa-amilase salivar. A intensidade da dor pode variar segundo a idade do paciente e sua motivação ao tratamento. O objetivo foi avaliar a intensidade de dor e sua relação com a motivação dos pacientes e com as concentrações salivares de sIgA e alfa-amilase, em adultos e crianças durante duas fases do tratamento ortodôntico. Vinte indivíduos (10 crianças e 10 adultos) responderam à um questionário de avaliação da motivação ao tratamento. Amostras de saliva foram coletadas e a intensidade de dor foi registrada diariamente, antes e após a colagem dos bráquetes e após a inserção do arco inicial. Apenas uma questão, relacionada à percepção da severidade da má oclusão, apresentou correlação com a intensidade de dor. Não houve diferença significante na intensidade de dor e na concentração sIgA entre adultos e crianças. De modo geral as crianças exibiram menor prevalência de dor, porém com maior intensidade. Houve uma tendência de correlação negativa entre a dor na mucosa bucal e a concentração de sIgA nas crianças, o que pode indicar a importância da sIgA na proteção da mucosa bucal. A concentração de alfa-amilase não teve correlação significante com a intensidade de dor, porém apresentou um aumento progressivo durante o período de avaliação, provavelmente devido ao estresse psicológico causado pela presença e ativação do aparelho fixo.
Pain is usually reported during orthodontic treatment. It comes from the strength applied to the teeth and traumatic lesions in the buccal mucosa, where secretory immunoglobulin A (sIgA) is the main protection and plays a role in integrity maintenance. Pain can increase the psychological stress, which induces changes in salivary alpha amylase. Pain intensity can vary according to patient’s age and his/her motivation towards treatment. The aim of this study was to evaluate pain intensity and its relation with patient’s motivation and salivary levels of slgA and alpha amylase, in adults and children, during two stages of orthodontic treatment. Twenty individuals (10 children and 10 adults) answered a questionnaire regarding their motivation towards treatment. Saliva samples were collected and pain intensity was evaluated on a daily basis, after and before the bonding of brackets and after the insertion of the initial arch. Only one question regarding the perception of malocclusion severity correlated with pain intensity. There was no significant difference in pain intensity and in slgA concentrations between adults and children. In general, pain prevalence in children was lower, yet reported pain was more intense. Pain in the buccal mucosa was negatively correlated with slgA concentrations in children, a finding that suggests a protective effect of slgA in the buccal mucosa. Although there was no significant correlation between the concentrations of alpha amylase and pain intensity, the levels of this enzyme increased during the evaluation period, probably due to the psychological stress caused by the presence and activation of the fixed braces.
Poveda, Claudia Ligia Esperanza Charry. "Análise da validade, interpretação e preferência da versão brasileira da Escala Facial de Dor - Revisada, em duas amostras clínicas." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/59/59134/tde-03052012-111521/.
Повний текст джерелаThe Faces Pain Scale Revised (FPS-R) is one of the most recommended tools in measuring the intensity of acute pain in children. The aim of this study was to assess validity, interpretability and preference of the Brazilian version of the FPS-R (FPS-R-B), in two different clinical samples. The first sample contained seventy-seven children, 6 to 12 years old and both sexes, undergoing venipuncture for blood sample (procedural pain). These children estimated their perceived pain intensity in FPS-R-B before and after venipuncture. Furthermore, after venipuncture, children were asked: a) to evaluate the intensity of their needle pain using the Coloured Analogue Scale (CAS), b) to indicate on the Faces scale the intensities representing the mild, moderate and severe pain, and c) to choose the scale they preferred and indicate the reasons for the preference. The second sample included fifty-three children, 6 to 12 years old and both sexes, undergoing minor surgery (postoperative pain). Following surgery, children were asked: a) to provide a rating of their current pain intensity using the FPS-R-B and the CAS, b) to indicate on the Faces scale the intensities representing the mild, moderate and severe pain, c) to estimate, on the FPS-R-B, the intensity of pain that their felt to warrant pharmacologic intervention (pain treatment threshold), and d) to choose the scale they preferred and indicate the reasons for the preference. The degree of concordance between FPS-R-B and CAS ratings (convergent validity), for both samples, was high and statistically significant Kendall\'s tau value was 0.75 for the first sample, and 0.79 for the second sample, (p<0.05) . FPS-R-B reflected the changes in pain intensity before and after venipuncture (concurrent validity): Wilcoxon Test z=- 6.24; p< 0.05. On the 0-10 scale for the FPS-R-B, the median and interquartile range (IQR) of the intensities that represented mild, moderate and severe pain were 2 (2-2), 4 (4-6) e 10 (10-10) respectively, for the first sample, and 2 (2-2), 6 (4-8) e 10 (10-10) respectively, for the second sample. The median and IQR for pain treatment threshold were 6 (4-10). Fifty-seven percent of children in the first sample and 64.8% in the second sample preferred the FPS-R-B. These proportions were statistically significant for the second sample (X²=5,453 p<0,05). Our data show that the FPS-R-B has similar statistical properties to the original. New evidences were presented regarding interpretability of the FPS-R by determining each children\'s treatment threshold and estimate of mild, moderate and severe pain. In this study, the FPS-R-B was preferred by the majority of children.
Duan, Xiaohong [Verfasser], Jean Charles [Akademischer Betreuer] Munch, and Eckart [Akademischer Betreuer] Priesack. "Modeling the impact of soil heterogeneity on the variability of crop growth at field scale / Xiaohong Duan. Gutachter: Jean Charles Munch ; Eckart Priesack. Betreuer: Jean Charles Munch." München : Universitätsbibliothek der TU München, 2011. http://d-nb.info/1015804721/34.
Повний текст джерела