Zaloguj się

Gotowe bibliografie tematyczne / Numerical / Rozprawy doktorskie

Kliknij ten link, aby zobaczyć inne rodzaje publikacji na ten temat: Numerical.

Rozprawy doktorskie na temat „Numerical”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 25 lipca 2025

Utwórz poprawne odniesienie w stylach APA, MLA, Chicago, Harvard i wielu innych

Wybierz rodzaj źródła:

Sprawdź 50 najlepszych rozpraw doktorskich naukowych na temat „Numerical”.

Przycisk „Dodaj do bibliografii” jest dostępny obok każdej pracy w bibliografii. Użyj go – a my automatycznie utworzymy odniesienie bibliograficzne do wybranej pracy w stylu cytowania, którego potrzebujesz: APA, MLA, Harvard, Chicago, Vancouver itp.

Możesz również pobrać pełny tekst publikacji naukowej w formacie „.pdf” i przeczytać adnotację do pracy online, jeśli odpowiednie parametry są dostępne w metadanych.

Przeglądaj rozprawy doktorskie z różnych dziedzin i twórz odpowiednie bibliografie.

1

Miletto, Petrazzini Maria Elena. "At the root of numerical cognition: fish as a model species to study pre - verbal numerical abilities." Doctoral thesis, Università degli studi di Padova, 2014. http://hdl.handle.net/11577/3423820.

Pełny tekst źródła

Streszczenie:

Although only our species has achieved high level of mathematical reasoning, numerical abilities are not a human prerogative and in last decades comparative research showed that several animal species display rudimentary numerical capacities (Agrillo & Beran, 2013). The ability to discriminate between quantities provide multiple benefits in different ecological contexts. For instance, numerical abilities can be useful to select the larger amount of food (Hunt et al., 2008), to reduce the probability of being spotted by predators by getting protection within the largest group of social compani

Style APA, Harvard, Vancouver, ISO itp.

2

Gooch, Kerry A. "Numerical electrochemistry." Thesis, University of Bath, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.425881.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

3

Branco, Manuel Baptista. "Numerical semigroups." Doctoral thesis, Universidade de Évora, 2002. http://hdl.handle.net/10174/23098.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

4

Munro, Peter Robert Thomas. "Application of numerical methods to high numerical aperture imaging." Thesis, Imperial College London, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.427816.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

5

Reddinger, Kaitlin Sue. "Numerical Stability & Numerical Smoothness of Ordinary Differential Equations." Bowling Green State University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1431597407.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

6

Piffer, Laura. "L'ontogenesi e la filogenesi delle abilità numeriche." Doctoral thesis, Università degli studi di Padova, 2012. http://hdl.handle.net/11577/3422124.

Pełny tekst źródła

Streszczenie:

In the last decades several studies have demonstrated that some numerical abilities are not strictly related to symbolic language and they are not a human prerogative. Recently the ability to discriminate between two quantities has been demonstrated also in fish. The aim of this project was to study the mechanisms underlying the non verbal numerical abilities in vertebrates. I investigated whether fish possess two independent numerical systems for the representation of small (<4) and large (>4) number or they possess a unique system that operates on the whole numerical scale. Both spontaneous

Style APA, Harvard, Vancouver, ISO itp.

7

文偉業 and Wai-yip Man. "Some properties of C-numerical ranges and C-numerical radii." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1992. http://hub.hku.hk/bib/B31210491.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

8

Lam, Tsz-mang, and 林梓萌. "The joint numerical range and the joint essential numerical range." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2013. http://hub.hku.hk/bib/B49858853.

Pełny tekst źródła

Streszczenie:

Let B(H) denote the algebra of bounded linear operators on a complex Hilbert space H. The (classical) numerical range of T ∈ B(H) is the set W(T) = {〈T x; x〉: x ∈ H; ‖x‖ = 1} Writing T= T_1 + iT_2 for self-adjoint T_1, T_2 ∈ B(H), W(T) can be identified with the set {(〈T_1 x, x〉,〈T_2 x, x〉) : x ∈ H, ‖x‖ = 1}. This leads to the notion of the joint numerical range of T= 〖(T〗_1, T_2, …, T_n) ∈ 〖B(H)〗^n. It is defined by W(T) = {(〈T_1 x, x〉,〈T_2 x, x〉, …, 〈T_n x, x〉) : x ∈ H, ‖x‖ = 1}. The joint numerical range has been studied extensively in order to understand the joint beha

Style APA, Harvard, Vancouver, ISO itp.

9

Wu, Wenwei. "Chemical reactions in turbulence : numerical studies through direct numerical simulations." Thesis, Littoral, 2021. http://www.theses.fr/2021DUNK0577.

Pełny tekst źródła

Streszczenie:

Le présent travail se concentre sur les propriétés statistiques des scalaires réactifs subissant des réactions chimiques réversibles en turbulence incompressible. Une analyse théorique des propriétés statistiques des scalaires à différents ordres de moments a été réalisée sur la base d'approximations et de modèles convenablement proposés. Les résultats théoriquement dérivés ont ensuite été comparés aux résultats numériques obtenus par simulation numérique directe (DNS). Dans la simulation numérique directe, les dérivés spatiales ont été principalement approximées en utilisant une méthode pseud

Style APA, Harvard, Vancouver, ISO itp.

10

Man, Wai-yip. "Some properties of C-numerical ranges and C-numerical radii /." [Hong Kong] : University of Hong Kong, 1992. http://sunzi.lib.hku.hk/hkuto/record.jsp?B13215024.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

11

Wagenhofer, Markus. "Block numerical ranges." [S.l.] : [s.n.], 2007. http://deposit.ddb.de/cgi-bin/dokserv?idn=98404972X.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

12

Kieri, Emil. "Numerical Quantum Dynamics." Licentiate thesis, Uppsala universitet, Avdelningen för beräkningsvetenskap, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-208837.

Pełny tekst źródła

Streszczenie:

We consider computational methods for simulating the dynamics of molecular systems governed by the time-dependent Schrödinger equation. Solving the Schrödinger equation numerically poses a challenge due to its often highly oscillatory solutions, and to the exponential growth of work and memory with the number of particles in the system. Two different classes of problems are studied: the dynamics of the nuclei in a molecule and the dynamics of an electron in orbit around a nucleus. For the first class of problems we present new computational methods which exploit the relation between quantum an

Style APA, Harvard, Vancouver, ISO itp.

13

Rinne, Oliver. "Axisymmetric numerical relativity." Thesis, University of Cambridge, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.613680.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

14

Bennett, Amy. "Early numerical experiences." Thesis, Loughborough University, 2017. https://dspace.lboro.ac.uk/2134/32451.

Pełny tekst źródła

Streszczenie:

There are large individual differences in children s mathematical abilities when starting formal schooling and these differences can have lasting consequences. One factor that could lead to differences in children s mathematics skills is the home numeracy environment. This thesis examines the home numeracy environment, firstly as a whole concept and then more in-depth of one area of the home numeracy environment, number books. The home numeracy environment section starts by presenting a systematic review of the home numeracy environment literature and draws conclusions about the inconsistency

Style APA, Harvard, Vancouver, ISO itp.

15

Berteletti, Ilaria A. "Varieties of Numerical Representations." Doctoral thesis, Università degli studi di Padova, 2008. http://hdl.handle.net/11577/3426392.

Pełny tekst źródła

Streszczenie:

A growing amount of evidence supports the hypothesis that humans are able, from the earliest age, to process numerical information in the absence of language. This work addresses the question of the nature of the internal representation for processing numerosities from three perspective: developmental, adults' skilled performance, and the peculiar case of synaesthesia. In our studies with children we addressed the development of the mental representation for numbers. In the first experiment we showed that, before formal teaching, preschoolers possess multiple numerical representations that fo

Style APA, Harvard, Vancouver, ISO itp.

16

PATERNESI, ALESSANDRA. "Numerical analysis of traditionally excavated shallow tunnels." Doctoral thesis, Università Politecnica delle Marche, 2017. http://hdl.handle.net/11566/245437.

Pełny tekst źródła

Streszczenie:

Lo scavo di gallerie rappresenta sicuramente una tra le sfide più impegnative che un ingegnere civile possa affrontare. Ciò è dovuto principalmente alla natura tridimensionale di questo problema di interazione terreno-struttura ma anche alle numerose incertezze che possono entrare in gioco nella progettazione. Recentemente, le tecniche di calcolo numeriche, che permettono una più ampia comprensione del problema, hanno subito un notevole sviluppo, diventando una risorsa fondamentale per la progettazione di scavi in sotterraneo. Tuttavia, solo ingegneri con una buona preparazione numerica son

Style APA, Harvard, Vancouver, ISO itp.

17

Piqueras, García Miguel Ángel. "Numerical Methods for Multidisciplinary Free Boundary Problems: Numerical Analysis and Computing." Doctoral thesis, Universitat Politècnica de València, 2018. http://hdl.handle.net/10251/107948.

Pełny tekst źródła

Streszczenie:

Multitud de problemas en ciencia e ingeniería se plantean como ecuaciones en derivadas parciales (EDPs). Si la frontera del recinto donde esas ecuaciones han de satisfacerse se desconoce a priori, se habla de "Problemas de frontera libre", propios de sistemas estacionarios no dependientes del tiempo, o bien de "Problemas de frontera móvil", asociados a problemas de evolución temporal, donde la frontera cambia con el tiempo. La solución a dichos problemas viene dada por la expresión de la(s) variable(s) dependiente(s) de la(s) EDP(s) junto con la función que determina la posición de la frontera

Style APA, Harvard, Vancouver, ISO itp.

18

De, Martino Giuseppe. "Multi-Value Numerical Modeling for Special Di erential Problems." Doctoral thesis, Universita degli studi di Salerno, 2015. http://hdl.handle.net/10556/1982.

Pełny tekst źródła

Streszczenie:

2013 - 2014<br>The subject of this thesis is the analysis and development of new numerical methods for Ordinary Di erential Equations (ODEs). This studies are motivated by the fundamental role that ODEs play in applied mathematics and applied sciences in general. In particular, as is well known, ODEs are successfully used to describe phenomena evolving in time, but it is often very di cult or even impossible to nd a solution in closed form, since a general formula for the exact solution has never been found, apart from special cases. The most important cases in the applications are sys

Style APA, Harvard, Vancouver, ISO itp.

19

Villa, A. "Three dimensional geophysical modeling : from physics to numerical simulation." Doctoral thesis, Università degli Studi di Milano, 2010. http://hdl.handle.net/2434/148440.

Pełny tekst źródła

Streszczenie:

The main objective of this thesis is to provide a comprehensive numerical tool for the three-dimensional simulation of sedimentary basins. We have used a volume averaging technique to obtain a couple of basin-scale mathematical models. We have used some innovative numerical techniques to deal with such models. A multi-fluid implicit tracking technique is developed and integrated with a Stokes solver that is robust with respect to the variations of the coefficients. The movement of the basin boundaries and the evolution of the faults are treated with an Ale and a Finite Volume scheme respective

Style APA, Harvard, Vancouver, ISO itp.

20

Alrmah, Masoud Ahmed. "Numerical Investigation Of Solidification." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12606140/index.pdf.

Pełny tekst źródła

Streszczenie:

Finite element solution of solidification process in 2-D Cartesian and axisymmetric geometries is investigated. The use of finite element may result in spurious increase of temperature in the field and the selection of the mushy zone range when used as a numerical tool along with the selection of the mesh size results in large errors in the predicted solidification time. The approach works best for problems where the mushy zone range is finite and the thermal conductivities of both phases are high.

Style APA, Harvard, Vancouver, ISO itp.

21

Smyth, Darren. "Numerical holographic condensed matter." Thesis, University of British Columbia, 2016. http://hdl.handle.net/2429/57076.

Pełny tekst źródła

Streszczenie:

This thesis studies strongly coupled phases of condensed matter physics using a combination of gauge-gravity correspondence and numerical methods. We examine holographic models of the condensed matter phenomena of: vortex formation in the spontaneously broken phase of gauge theories, spontaneous breaking of translational invariance by periodic modulation, properties of (non-)Fermi liquids, and metal-insulator transitions in systems with sourced periodic modulation. In Chapter 2, we formulate a criterion for the existence of a Higgs phase based on the existence of bulk solitons. This criteria

Style APA, Harvard, Vancouver, ISO itp.

22

Arosemena, Arturo. "Numerical Model of MeltingProblems." Thesis, KTH, Mekanik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-221141.

Pełny tekst źródła

Streszczenie:

In the present study, a finite volume method is employed to modelthe advection-diffusion phenomenon during a pure substance meltingprocess. The exercise is limited to a benchmark problem consisting ofthe 2D melting from a vertical wall of a PCM driven by natural convectionin the melt. Numerical results, mainly the temporal evolutionof average Nusselt number at the hot wall and the average liquid fraction,are validated by available literature data and the effect of thermalinertia in the heat transfer is considered as well. Finally, motivatedby recent publications and the model presented here, p

Style APA, Harvard, Vancouver, ISO itp.

23

Kuhlen, Michael. "Adventures in numerical cosmology /." Diss., Digital Dissertations Database. Restricted to UC campuses, 2006. http://uclibs.org/PID/11984.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

24

Lin, Yuan. "Numerical modeling of dielectrophoresis." Licentiate thesis, Stockholm, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4014.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

25

Tan, Lynne S. C. "Numerical understanding in infancy." Thesis, University of Oxford, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.388999.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

26

Ma, Li. "Multi-axis numerical control." Thesis, University of Canterbury. Engineering, 1989. http://hdl.handle.net/10092/6462.

Pełny tekst źródła

Streszczenie:

This thesis presents the analysis, design and development of a multi-axis machinery numerical control system. The purpose of this research is to provide a numerical control method to overcome the multi-axis numerical control problem. The control system includes an IBM-PC computer as a host processor, a plug in multimotor controller board based on commercial numerical motor controller ICs. These implement a software specified digital control algorithm and output a PWM control number. Six motors, their driven actuators, and digital incremental feedback encoders complete the system. The experim

Style APA, Harvard, Vancouver, ISO itp.

27

鄭金木 and Kam-muk Cheng. "Plotting generalized numerical ranges." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1998. http://hub.hku.hk/bib/B31220514.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

28

Mullan, Anna. "Virgil and Numerical Symbolism." Scholarship @ Claremont, 2014. http://scholarship.claremont.edu/cmc_theses/811.

Pełny tekst źródła

Streszczenie:

In the final book of the Georgics, Virgil digresses into a nostalgic and regretful explanation of his inability to include a proper discussion of gardening because he is spatiis exclusus iniquis (147). Often deemed “the skeleton of a fifth book of the Georgics” the exact meaning and intent behind this passage is still largely contested. In this paper I will attempt to de-strange this passage by examining it philosophically and allegorically, particularly by means of numerical symbolism.

Style APA, Harvard, Vancouver, ISO itp.

29

Amphlett, Jonathan Lee. "Numerical simulation of microelectrodes." Thesis, University of Southampton, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.341628.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

30

Turaev, Michael. "Numerical Experiments in Billiards." Thesis, Uppsala universitet, Institutionen för fysik och astronomi, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-279462.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

31

Öqvist, Mona. "Numerical simulations of wear." Licentiate thesis, Luleå tekniska universitet, 2000. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-26185.

Pełny tekst źródła

Streszczenie:

The objective of this licentiate thesis was to study the effect of tool wear for sheet metal forming tools and how the wear process can be simulated in an efficient manner. Three Papers are appended to this licentiate thesis. Paper A covers the influence of tool geometry in deep drawing. In paper B is the way of calculating with finite element analysis described. The wear of a steel cylinder oscillating against a steel plate was studied experimentally. The worn shape of the cylinder was then compared with a numerical simulation of the shape. Paper C shows how numerical simulations can be used

Style APA, Harvard, Vancouver, ISO itp.

32

Cheng, Kam-muk. "Plotting generalized numerical ranges /." Hong Kong : University of Hong Kong, 1998. http://sunzi.lib.hku.hk/hkuto/record.jsp?B20792736.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

33

Ōyama, Yoshiyuki. "Numerical invariants of links /." Electronic version of summary, 1992. http://www.wul.waseda.ac.jp/gakui/gaiyo/1784.pdf.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

34

Mikulka, Jiří. "Numerické výpočty určitých integrálů." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2014. http://www.nusl.cz/ntk/nusl-236141.

Pełny tekst źródła

Streszczenie:

The application of the finite integral of multiple variable functions is penetrating into more and more industries and science disciplines. The demands placed on solutions to these problems (such as high accuracy or high speed) are often quite contradictory. Therefore, it is not always possible to apply analytical approaches to these problems; numerical methods provide a suitable alternative. However, the ever-growing complexity of these problems places too high a demand on many of these numerical methods, and so neither of these methods are useful for solving such problems. The goal of this t

Style APA, Harvard, Vancouver, ISO itp.

35

Oliveira, Cecília Aparecida Virgílio de. "Relações Lógicas estabelecidas por alunos de uma Quarta Série do Ensino Fundamental." Pontifícia Universidade Católica de São Paulo, 2004. https://tede2.pucsp.br/handle/handle/18477.

Pełny tekst źródła

Streszczenie:

Made available in DSpace on 2016-04-29T14:32:22Z (GMT). No. of bitstreams: 1 dissertacao_cecilia_virgilio_oliveira.pdf: 491085 bytes, checksum: bfbb27623cde3054e317b121efab1f80 (MD5) Previous issue date: 2004-10-04<br>This paper examines the production of numerical relations done by students of a 4th grade of elementary school at a public school in the city of Sao Paulo, S.P., Brazil. Several studies, in particular the ones done by Gimenez & Lins, Kamii and Franchi, show the need of establishing relations between the numbers, identifying meaning for the numbers and operations as a flexible

Style APA, Harvard, Vancouver, ISO itp.

36

Balakrishnan, Shankar Kumar. "A numerical study of some vortex ring phenomena using direct numerical simulation (DNS)." Thesis, University of Southampton, 2013. https://eprints.soton.ac.uk/355700/.

Pełny tekst źródła

Streszczenie:

Direct numerical simulation (DNS) is used to study some aspects of the dynamics of vortex rings in viscous, incompressible ow at Reynolds numbers (defined as the ratio of the initial circulation to the kinematic viscosity) in the range of 103 to 104. Firstly, the effect of the particular initial core azimuthal vorticity profile of a vortex ring on its subsequent evolution in unbounded ow is studied. Vortex rings with a wide range of initial core vorticity profiles are shown to relax to a common equilibrium state. Additionally the behaviour of the equilibrium vortex ring at large times is studi

Style APA, Harvard, Vancouver, ISO itp.

37

Qiao, Zhonghua. "Numerical solution for nonlinear Poisson-Boltzmann equations and numerical simulations for spike dynamics." HKBU Institutional Repository, 2006. http://repository.hkbu.edu.hk/etd_ra/727.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

38

Boga, Gabriele. "Numerical Experiments on Turbulent Entrainment." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020. http://amslaurea.unibo.it/20559/.

Pełny tekst źródła

Streszczenie:

The aim of this thesis work is the study of the turbulent entrainment phenomenon in jets through numerical experiments. More specifically, an attempt to study the effect of engulfment and nibbling mechanisms separately was made. The flow chosen for the numerical experiments is the temporal planar jet. The idea behind these experiments is to study the spreading and the mixing of a passive scalar under the effect of two modified velocity fields. The first is a large-scale velocity field obtained through a filtering operation, while the second is a small-scale velocity field obtained subtracting

Style APA, Harvard, Vancouver, ISO itp.

39

Nicholson, John C. "Numerical optimization of synergetic maneuvers." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1994. http://handle.dtic.mil/100.2/ADA283398.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

40

Elbracht, Oliver. "Wave Extraction in Numerical Relativity." Doctoral thesis, kostenfrei, 2009. http://www.opus-bayern.de/uni-wuerzburg/volltexte/2009/4067/.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

41

Palmacci, Matthew Stephen. "Escher's problem and numerical sequences." Link to electronic thesis, 2006. http://www.wpi.edu/Pubs/ETD/Available/etd-042706-133106/.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

42

Evensberget, Dag Frohde. "Numerical Simulation of Nonholonomic Dynamics." Thesis, Norwegian University of Science and Technology, Department of Mathematical Sciences, 2006. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-9484.

Pełny tekst źródła

Streszczenie:

<p>We study the numerical integration of nonholonomic problems. The problems are formulated using Lagrangian and Hamiltonian mechanics. We review briefly the theoretical concepts used in geometric mechanics. We reconstruct two nonholonomic variational integrators from the monograph of Monforte. We also construct two one-step integrators based on a combination of the continuous Legendre transform and the discrete Legendre transform from an article by Marsden and West. Inintially these integrators display promising behavior, but they turn out to be unstable. The variational integrators are co

Style APA, Harvard, Vancouver, ISO itp.

43

Hilden, Sindre Kristensen. "Numerical Methods for Nonholonomic Mechanics." Thesis, Norwegian University of Science and Technology, Department of Mathematical Sciences, 2009. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-9895.

Pełny tekst źródła

Streszczenie:

<p>We discuss nonholonomic systems in general and numerical methods for solving them. Two different approaches for obtaining numerical methods are considered; discretization of the Lagrange-d'Alembert equations on the one hand, and using the discrete Lagrange-d'Alembert principle to obtain nonholonomic integrators on the other. Among methods using the first approach, we focus on the super partitioned additive Runge-Kutta (SPARK) methods. Among nonholonomic integrators, we focus on a reversible second order method by McLachlan and Perlmutter. Through several numerical experiments the methods w

Style APA, Harvard, Vancouver, ISO itp.

44

Vedin, Jörgen. "Numerical modeling of auroral processes." Doctoral thesis, Umeå University, Physics, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-1117.

Pełny tekst źródła

Streszczenie:

<p>One of the most conspicuous problems in space physics for the last decades has been to theoretically describe how the large parallel electric fields on auroral field lines can be generated. There is strong observational evidence of such electric fields, and stationary theory supports the need for electric fields accelerating electrons to the ionosphere where they generate auroras. However, dynamic models have not been able to reproduce these electric fields. This thesis sheds some light on this incompatibility and shows that the missing ingredient in previous dynamic models is a correct des

Style APA, Harvard, Vancouver, ISO itp.

45

Uddholm, Per. "Numerical Simulation of Flame Propagation." Thesis, Uppsala University, Department of Information Technology, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-98325.

Pełny tekst źródła

Streszczenie:

<p>The effects of the temperature and length, of the preheat zone, on the deflagration to detonation transition are investigated through numerical simulation. The Navier-Stokes equations, with a reaction term, are solved in one dimension. The time integration is a one-dimensional adaptation of an existing two-dimensional finite volume method code. An iterative scheme, based on an overlap integral, is developed for the determination of the deflagration to detonation transition. The code is tested in a number of cases, where the analytical solution (to the Euler equations) is known. The location

Style APA, Harvard, Vancouver, ISO itp.

46

Karaismail, Ertan. "Numerical Simulation Of Radiating Flows." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12606452/index.pdf.

Pełny tekst źródła

Streszczenie:

Predictive accuracy of the previously developed coupled code for the solution of the time-dependent Navier-Stokes equations in conjunction with the radiative transfer equation was first assessed by applying it to the prediction of thermally radiating, hydrodynamically developed laminar pipe flow for which the numerical solution had been reported in the literature. The effect of radiation on flow and temperature fields was demonstrated for different values of conduction to radiation ratio. It was found that the steady-state temperature predictions of the code agree well with the benchmark solut

Style APA, Harvard, Vancouver, ISO itp.

47

Kushnarov, Andriy. "Numerical Method For Conform Reflection." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/2/12611426/index.pdf.

Pełny tekst źródła

Streszczenie:

Conformal map has application in a lot of areas of science, e.g., fluid flow, heat conduction, solidification, electromagnetic, etc. Especially conformal map applied to elasticity theory can provide most simple and useful solution. But finding of conformal map for custom domain is not trivial problem. We used a numerical method for building a conformal map to solve torsion problem. In addition it was considered an infinite system method to solve the same problem. Results are compared.

Style APA, Harvard, Vancouver, ISO itp.

48

Luteberget, Bjørnar Steinnes. "Numerical approximation of conformal mappings." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for matematiske fag, 2010. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-11042.

Pełny tekst źródła

Streszczenie:

A general introduction to conformal maps and the Riemann mapping theorem is given. Three methods for numerically approximating conformal maps from arbitrary domains to the unit disc are presented: the Schwarz-Christoffel method, the geodesic algorithm and the circle packing method. Basic implementations of the geodesic algorithm and the circle packing method were made, and program code is presented. Applications of these numerical methods to problems in physics and mathematical research are briefly discussed.

Style APA, Harvard, Vancouver, ISO itp.

49

Rasmussen, Inger-Anne. "Numerical study of hydrogen adsorption." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for energi- og prosessteknikk, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-18589.

Pełny tekst źródła

Streszczenie:

The main objective of this thesis is to describe the transient thermodynamics during physisorption of hydrogen gas using a commercial numerical software.Simulations of thermal effects during adsorption are valuable tools for the efficient design of hydrogen adsorption storage systems. Transient mass and energy equations are used for describing the adsorption process. For this purpose, experimental adsorption data has to be presented analytically. Several models have been developed for this objective.The thesis consists of two parts. In the first, a literature study on adsorption theories and t

Style APA, Harvard, Vancouver, ISO itp.

50

Bernving, Niels. "Numerical thermal analysis of SEAM." Thesis, KTH, Rymd- och plasmafysik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-218037.

Pełny tekst źródła

Streszczenie:

This thesis is on the topic of numerical thermal analysis, specically of the SmallExplorer for Advanced Missions SEAM. SEAM is a 3 unit Cubesat, which isgoing to be launched in a sun-synchronous orbit to measure the magnetic sphere.It makes use of a boom deployment system to remove the sensors from themagnetic eld inuences of the body. The goal of this thesis is to study thethermal behaviour of the satellite, specically the internal components and thethermal deformation of the boom structure. The numerical simulations makeuse of the Monte Carlo Ray-tracing method. Furthermore thermal vacuumcyc

Style APA, Harvard, Vancouver, ISO itp.

Oferujemy zniżki na wszystkie plany premium dla autorów, których prace zostały uwzględnione w tematycznych zestawieniach literatury. Skontaktuj się z nami, aby uzyskać unikalny kod promocyjny!