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Dissertations / Theses on the topic 'Problem of survival on Earth'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

Петровська, С. А., та Т. Кириченко. "Екологічна криза та шляхи її подолання". Thesis, Видавництво СумДУ, 2011. http://essuir.sumdu.edu.ua/handle/123456789/11824.

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2

McNamara, Ken W. "An application of functional analysis to a problem in geophysics /." Title page, contents and summary only, 1992. http://web4.library.adelaide.edu.au/theses/09SM/09smm1695.pdf.

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3

Bowles, Mark Nicholas. "A stability result for the lunar three body problem." Thesis, University of Warwick, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.367149.

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4

Oller, Piqué Ramon. "Survival analysis issues with interval-censored data." Doctoral thesis, Universitat Politècnica de Catalunya, 2006. http://hdl.handle.net/10803/6520.

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L'anàlisi de la supervivència s'utilitza en diversos àmbits per tal d'analitzar dades que mesuren el temps transcorregut entre dos successos. També s'anomena anàlisi de la història dels esdeveniments, anàlisi de temps de vida, anàlisi de fiabilitat o anàlisi del temps fins a l'esdeveniment. Una de les dificultats que té aquesta àrea de l'estadística és la presència de dades censurades. El temps de vida d'un individu és censurat quan només és possible mesurar-lo de manera parcial o inexacta. Hi ha diverses circumstàncies que donen lloc a diversos tipus de censura. La censura en un interval fa r

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5

Diouane, Youssef. "Globally convergent evolution strategies with application to Earth imaging problem in geophysics." Phd thesis, Toulouse, INPT, 2014. http://oatao.univ-toulouse.fr/12202/1/Diouane.pdf.

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In recent years, there has been significant and growing interest in Derivative-Free Optimization (DFO). This field can be divided into two categories: deterministic and stochastic. Despite addressing the same problem domain, only few interactions between the two DFO categories were established in the existing literature. In this thesis, we attempt to bridge this gap by showing how ideas from deterministic DFO can improve the efficiency and the rigorousness of one of the most successful class of stochastic algorithms, known as Evolution Strategies (ES’s). We propose to equip a class of ES’s wit

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6

Lee, Yung-An. "An analytic study of the baroclinic instability problem on the sphere." Thesis, Massachusetts Institute of Technology, 1987. http://hdl.handle.net/1721.1/54324.

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7

Dosso, Stanley Edward. "Inversion and appraisal for the one-dimensional magnetotellurics problem." Thesis, University of British Columbia, 1990. http://hdl.handle.net/2429/30692.

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The method of magnetotellurics (MT) uses surface measurements of naturally-occurring electromagnetic fields to investigate the conductivity distribution within the Earth. In many interpretations it is adequate to represent the conductivity structure by a one-dimensional (1-D) model. Inferring information about this model from surface field measurements is a non-linear inverse problem. In this thesis, linearized construction and appraisal algorithms are developed for the 1-D MT inverse problem. To formulate a linearized approach, the forward operator is expanded in a generalized Taylor series

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8

Holman, Matthew Jon. "Symplectic maps for the N-body problem with applications to solar system dynamics." Thesis, Massachusetts Institute of Technology, 1994. http://hdl.handle.net/1721.1/54394.

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9

Hammond, William Frank. "The earth as a problem, a curriculum inquiry into the nature of environmental education." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0024/NQ37710.pdf.

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10

Knapp, van Bogaert Donna. "Earth, air, fire and water : moral responsibility and the problem of global drug resistance." Thesis, Stellenbosch : Stellenbosch University, 2004. http://hdl.handle.net/10019.1/49936.

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Thesis (PhD)--Stellenbosch University, 2004.<br>ENGLISH ABSTRACT: In this dissertation, I grapple with the problem of global drug resistance and moral responsibility which, as far as I am aware, has so far not been presented as a topic of ethical inquiry. It represents a conundrum involving three major factors: microbial adaptation and change, human social factors and environmental changes. Drug resistance is a phenomenon in which certain microorganisms, when exposed to antimicrobial agents, may acquire the beneficial trait of drug resistance which ensures a better potential for their s

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11

Tan, Minghu. "Low energy capture of near-Earth asteroids in the circular restricted three-body problem." Thesis, University of Glasgow, 2018. http://theses.gla.ac.uk/30779/.

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Near-Earth Asteroids (NEAs) can provide useful resources in terms of feedstock for spacecraft propellant, crew logistic support and a range of useful metals. The possibility of capturing small NEAs using low energy transfers would therefore be of significant scientific and commercial interest. Although NEAs may make close approaches to the Earth, and so represent a potential impact threat, the exploitation of their resources has long been proposed as a necessary element for future space exploration. The objective of the research presented in this thesis is to develop methodologies for the traj

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12

Peters-deCourval, Lisel. "Dead Without Water: Personal Storytelling Of Place As An Education Tool For Interdependent Survival Of Our Earth Home." ScholarWorks @ UVM, 2019. https://scholarworks.uvm.edu/graddis/1070.

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ABSTRACT Do you have stories of meaningful places in your life? Are there examples of stories of place(s) you have heard have been powerful influences for you? Why? How have these places been impacted by climate change, and how will they be impacted by climate change? Our shared environment is at a critical juncture. The physical survival of this planet and our collective wellbeing is increasingly dependent on challenging our ways and bettering educating ourselves and others to respect and acknowledge the interconnection we have with the planet home that gives us life. In this research, I exam

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13

Ferreira, Lago Rafael. "A study on block flexible iterative solvers with applications to Earth imaging problem in geophysics." Phd thesis, Toulouse, INPT, 2013. http://oatao.univ-toulouse.fr/10055/1/Ferreira.pdf.

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This PhD thesis concerns the development of flexible Krylov subspace iterative solvers for the solution of large sparse linear systems of equations with multiple right-hand sides. Our target application is the solution of the acoustic full waveform inversion problem in geophysics associated with the phenomena of wave propagation through an heterogeneous model simulating the subsurface of Earth. When multiple wave sources are being used, this problem gives raise to large sparse complex non-Hermitian and nonsymmetric linear systems with thousands of right-hand sides. Specially in the three-dimen

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Munro, Gerald. "Immortality of the soul or resurrection of the body? : the problem of the self and its survival." Thesis, University of East London, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.532375.

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Religious belief is full of ideas to which multitudes seem able to attach sense, but which philosophers say are unintelligible. The problem of the self and the belief in its survival after death are among the most widespread of these ideas. The main area of difficulty upon which philosophers have concentrated has to do with the so-called mind-body problem. Can the sort of existence envisaged after death be intelligibly described? Can the sort of being whose existence is predicated, even if properly called a self or person, be identified with any particular pre mortem person? My purpose is to e

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15

Glavin, Daniel Patrick. "Survival of prebiotic compounds during exogenous delivery : implications for the origin of life on earth and potentially on mars /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2001. http://wwwlib.umi.com/cr/ucsd/fullcit?p3025934.

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16

Bagherbandi, Mohammad. "An Isostatic Earth Crustal Model : and Its Applications." Doctoral thesis, KTH, Geoinformatik och Geodesi, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-31989.

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The Mohorovičič discontinuity (Moho), which is the surface separating the Earth’s crust from the mantle, is of great interest among geoscientists. The Moho depth can be determined by seismic and gravimetric methods. The seismic methods are expensive, time-consuming and suffer from lack of global coverage of data, while the gravimetric methods use inexpensive and mostly already available global and regional data based on an isostatic model. The main reasons for studying an isostatic model are on one hand the gaps and uncertainties of the seismic models, and, on the other hand, the generous avai

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Nilsson, Per Johan Fredrik. "Planning semi-autonomous drone photo missions in Google Earth." Thesis, Mittuniversitetet, Avdelningen för data- och systemvetenskap, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-31473.

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This report covers an investigation of the methods and algorithms required to plan and perform semi-autonomous photo missions on Apple iPad devices using data exported from Google Earth. Flight time was to be minimized, taking wind velocity and aircraft performance into account. Google Earth was used both to define what photos to take, and to define the allowable mission area for the aircraft. A benchmark mission was created containing 30 photo operations in a 250 by 500 m area containing several no-fly-areas. The report demonstrates that photos taken in Google Earth can be reproduced in reali

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Soldini, Stefania. "Design and control of solar radiation pressure assisted missions in the sun-earth restricted three-body problem." Thesis, University of Southampton, 2016. https://eprints.soton.ac.uk/401834/.

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The scientific interest in space exploration is driven by the desire to answer fundamental questions relating to the formation of our solar system and life on Earth. Space agencies are currently pushing the boundaries of space mission design to meet scientific goals. Thus, space missions require novel trajectories to further human space exploration. A modern approach that has arisen in space mission design is to use dynamical system tools that exploit the natural dynamics of the solar system. A spacecraft's natural dynamics are affected by environmental perturbations such as Solar Radiation Pr

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19

Robertson, Jennifer L. 1969. "The effects of an adventure education problem-based approach program on students' self-esteem and perceived problem solving ability /." Thesis, McGill University, 1997. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=35304.

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This study investigated changes in self-esteem and perceived problem solving ability of academically at-risk students participating in a program called Science of Survival. The program combined adventure education and problem based learning approaches. One hundred and fifty-five male and female students, between the ages of 16 and 24 years completed the Self-Esteem Inventory and the Problem Solving Inventory at the beginning of the semester, after an adventure experience weekend, and at the end of the semester. A group of seventy-seven first year social science students, serving as a control g

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Frick, Johann David. "'Making People Happy, Not Making Happy People': A Defense of the Asymmetry Intuition in Population Ethics." Thesis, Harvard University, 2014. http://nrs.harvard.edu/urn-3:HUL.InstRepos:13064981.

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This dissertation provides a defense of the normative intuition known as the Procreation Asymmetry, according to which there is a strong moral reason not to create a life that will foreseeably not be worth living, but there is no moral reason to create a life just because it would foreseeably be worth living. Chapter 1 investigates how to reconcile the Procreation Asymmetry with our intuitions about another recalcitrant problem case in population ethics: Derek Parfit's Non-Identity Problem. I show that what has prevented philosophers from developing a theory that gives a satisfactory account

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Mastio, Nicolas. "Improving the global coherency of the Shared Earth Model using static, dynamic and geomechanics data." Electronic Thesis or Diss., Université de Lorraine, 2020. http://www.theses.fr/2020LORR0258.

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La production des réservoirs pétrolifères modifie l'état de contrainte du sous-sol. L'extraction du pétrole induit une diminution de la pression des pores et la roche réservoir est soumise à un chargement supplémentaire. Le réservoir n'est la seule région affectée par la production : les couches sus-jacentes et sous-jacentes se déplacent aussi. Pour comprendre l'effet de la compaction du réservoir sur les couches sus-jacentes et sur la subsidence, des modèles géomécaniques sont construits. Le comportement élastique et le changement de la pression des pores sont utilisés pour calculer le champ

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22

Forsberg, Tomasz. "Citizens’ Assemblies: a potential transformative method for addressing the wicked problem of climate change : A case study of the 2016 Irish Citizens’ Assembly." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-416490.

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The amount of global greenhouse gas emissions needs to be significantly reduced in order to reach the Paris agreement target of 1.5°C by 2050. Contemporary representative political systems have failed so far in adequately addressing the complex problem of climate change. This study looks at potential alternative or complementary decision-making and knowledge producing methods, more specifically the deliberative democratic method of citizens’ assemblies. The three core concepts discussed in this thesis are citizens assemblies, wicked problems and sustainable transformation. By critically discus

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23

Rosales, de Cáceres José J. "On the effect of the Sun's gravity around the Earth-Moon L1 and L2 libration points." Doctoral thesis, Universitat de Barcelona, 2020. http://hdl.handle.net/10803/670809.

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In this thesis we explored some aspects of the dynamics around the Earth-Moon L1 and L2 points in the context of two Restricted Four Body Problems: the Bicircular Problem (BCP) and the Quasi-bicircular Problem (QBCP). Both the BCP and QBCP model the dynamics of a massless particle moving under the influence of the Sun, Earth, and Moon. Although these two models focus on the same system, it is relevant to study both because their behavior around the L2 is qualitatively different.Ðhese two models can be written in the Hamiltonian formalism as periodic time-dependent perturbations of the RTBP. To

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Andersson, My. "Who’s responsible? : A study of strategies for handling climate migration." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-387500.

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The issue of climate migration has long been struggling to make its way onto the international agenda. This study therefore set out to shed a light on eleven strategies for handling climate migration. The study builds on the work by Ransan-Cooper et al. (2015) where they allocate actors to four different frames depending on how the actor in question view the environmental migrant, either as; a victim; a security threat; an adaptive agent or; a political subject. This makes out an important comparative basis for the analysis done in this study. It also provides a background on problem definitio

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Rossi, Elisabetta. "Unveiling the size of the Universe: the first accurate measurement of the Earth-Sun distance by Giovanni Domenico Cassini." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021. http://amslaurea.unibo.it/23751/.

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In the ambitious plan of King Louis XIV, France should have become culturally dominant in Europe. The First Minister of State Jean Baptiste Colbert suggested him to finance not only military campaigns but also scientific expeditions aimed to determine, with the highest possible accuracy, the extension of the colonial possessions, to show that France was the largest European power. The astronomers of the Académie des Sciences (founded in 1666), being also geographers and cartographers, were the “leading actors” of those dangerous expeditions, as measuring the terrestrial coordinates (latitu

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Thaller, de Zarate Celina. "Silent waters – Diving beyond the resource nexus : A critical case study of clothing brands on water sustainability issues." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-419420.

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The clothing industry can be linked to problematic issues of social equity and environmental sustainability worldwide. This is manifested in the every-day consumer behavior of industrialized societies, which heavily relies on geographically distant labor and resources. Therefore, this thesis looked at the interconnection of social equity and environmental sustainability from a nexus perspective. Nexus approaches are increasingly defining the pathway to sustainable development, yet they typically represent resource-efficient and technological solutions. This form of problematizing water sustain

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Whittington, Kayla Lee. "How Does a Next Generation Science Standard Aligned, Inquiry Based, Science Unit Impact Student Achievement of Science Practices and Student Science Efficacy in an Elementary Classroom?" PDXScholar, 2017. https://pdxscholar.library.pdx.edu/open_access_etds/3942.

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This study examined the impact of an inquiry based Next Generation Science Standard aligned science unit on elementary students' understanding and application of the eight Science and Engineering Practices and their relation in building student problem solving skills. The study involved 44 second grade students and three participating classroom teachers. The treatment consisted of a school district developed Second Grade Earth Science unit: What is happening to our playground? that was taught at the beginning of the school year. Quantitative results from a Likert type scale pre and post survey

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Lizy-Destrez, Stéphanie. "Operational scenarios optimization for resupply of crew and cargo of an International gateway Station located near the Earth-Moon-Lagrangian point-2." Thesis, Toulouse, ISAE, 2015. http://www.theses.fr/2015ESAE0034/document.

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Ce projet se place dans le contexte des futures missions habitées d’exploration du système solaire (avec un horizon de 2025), en respect de la feuille de route proposée par l’ISECG (International Space Exploration Coordination Group) [1]. Une nouvelle avancée serait de maintenir, à un des points de Lagrange du système Terre-Lune, en avant-poste, une station spatiale qui faciliterait l’accès vers les destinations telles que la Lune, Mars et les astéroïdes et permettrait de tester certaines technologies, notamment avant de les employer pour des missions plus lointaines. Un des principaux défis s

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Penz, Sébastien. "Modélisation et inversion de données électriques en courant continu : vers une prise en compte efficace de la topographie." Electronic Thesis or Diss., Paris, ENMP, 2012. http://www.theses.fr/2012ENMP0016.

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L'imagerie électrique est un outil de plus en plus important pour un large domaine d'applications relatives à la caractérisation de la subsurface proche. D'importants développements ont été réalisés au cours des vingt dernières années pour l'amélioration des systèmes d'acquisitions et des algorithmes d'inversions. L'acquisition et le traitement de gros jeux de données reste toutefois une tâche délicate, en particulier en présence de topographie. Afin d'améliorer la gestion de la topographie, nous avons développé un nouvel algorithme d'inversion électrique 2.5D et 3D. Nous avons proposé deux no

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30

Lindeberg, Anna, Claudia Dina, Håkan Augustsson, and Mariana Vasileva. "Importance of Leadership Competencies for the Transition to Sustainable Healthcare in Sweden." Thesis, Blekinge Tekniska Högskola, Institutionen för strategisk hållbar utveckling, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-20027.

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Our unsustainable way of living has created a precondition for the emergence of more and new illnesses, jeopardizing the overall health of society. The Swedish healthcare system faces complex challenges that threaten its ability to live up to its obligations as stated in the law. It is proven that leaders in public organisations can have a substantial function in leading towards sustainability. Leadership competencies have a big role to play in that journey.This thesis explores the complex challenges administration leaders in the healthcare sector of two Swedish public organisations – Region B

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31

Le, Bihan Bastien. "Étude de la dynamique autour et entre les points de Lagrange de modèles Terre-Lune-Soleil cohérents." Thesis, Toulouse, ISAE, 2017. http://www.theses.fr/2017ESAE0046/document.

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Au cours des dernières décennies, l’étude de la dynamique autour des points de Lagrange des systèmes Terre-Lune (EMLi) et Terre-Soleil (SELi) a ouvert de nouvelles possibilités pour les orbites et les transferts spatiaux. Souvent modélisés comme des Problèmes à Trois Corps (CR3BP) distincts, ces deux systèmes ont également été combinés pour produire des trajectoiresà faible coût dans le système Terre-Lune-Soleil étendu. Cette approximation (PACR3BP) a permis de mettre en évidence un réseau à faible énergie de trajectoires (LEN) qui relie la Terre, la Lune, EML1,2 et SEL1,2. Cependant, pour cha

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32

Pozzi, Filippo. "Ricerca e analisi di orbite terminator attorno a corpi minori e applicazione all'asteroide Apophis." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amslaurea.unibo.it/18488/.

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L’obbiettivo principale dell’elaborato di tesi è stata la designazione di alcune possibili traiettorie utilizzabili da uno spacecraft con orbita in prossimità di un asteroide, per appropriate analisi di superficie. Al fine di ottenere risultati concreti sono stati utilizzati differenti asteroidi e differenti profili di missione. Gli asteroidi in considerazione, appartenenti alla classe Near-Earth sono: Eros 433, Didymos 65803 e Apophis 99942. I dati riguardanti quest'ultimo asteroide sono stati analizzati in modo più dettagliato ottenendo, con appropriate valutazioni, una completa famiglia

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Penz, Sébastien. "Modélisation et inversion de données électriques en courant continu : vers une prise en compte efficace de la topographie." Phd thesis, Ecole Nationale Supérieure des Mines de Paris, 2012. http://pastel.archives-ouvertes.fr/pastel-00796438.

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L'imagerie électrique est un outil de plus en plus important pour un large domaine d'applications relatives à la caractérisation de la subsurface proche. D'importants développements ont été réalisés au cours des vingt dernières années pour l'amélioration des systèmes d'acquisitions et des algorithmes d'inversions. L'acquisition et le traitement de gros jeux de données reste toutefois une tâche délicate, en particulier en présence de topographie. Afin d'améliorer la gestion de la topographie, nous avons développé un nouvel algorithme d'inversion électrique 2.5D et 3D. Nous avons proposé deux no

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34

Pérez, Solano Carlos Andrés. "Imagerie sismique de la proche sub-surface : modification de l'inversion des formes d'onde pour l'analyse des ondes de surface." Electronic Thesis or Diss., Paris, ENMP, 2013. http://www.theses.fr/2013ENMP0023.

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L’amélioration des images sismiques peut aider à mieux contraindre l’exploration deshydrocarbures. Les ondes élastiques qui se propagent dans la Terre peuvent être classifiéescomme ondes de volume et ondes de surface. Si ces dernières sont les plus énergétiques,seules les ondes de volume sont couramment considérées comme des signaux utiles.Cependant, les ondes de surface sont utiles pour caractériser la proche sub-surface.Classiquement, les ondes de surface sont analysées dans des contextes de propriétésélastiques localement 1D.Nous proposons une modification de l’inversion des formes d’onde c

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Ramos, Iloneide Carlos de Oliveira. "Metodologia estat?stica na solu??o do problema do caixeiro viajante e na avalia??o de algoritmos : um estudo aplicado ? transgen?tica computacional." Universidade Federal do Rio Grande do Norte, 2005. http://repositorio.ufrn.br:8080/jspui/handle/123456789/15175.

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Made available in DSpace on 2014-12-17T14:55:03Z (GMT). No. of bitstreams: 1 IloneideCOR.pdf: 1010601 bytes, checksum: 76bbc04aa0a456f079121fb0d750ea74 (MD5) Previous issue date: 2005-03-03<br>The problems of combinatory optimization have involved a large number of researchers in search of approximative solutions for them, since it is generally accepted that they are unsolvable in polynomial time. Initially, these solutions were focused on heuristics. Currently, metaheuristics are used more for this task, especially those based on evolutionary algorithms. The two main contributions of this w

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Pérez, Solano Carlos Andrés. "Imagerie sismique de la proche sub-surface : modification de l'inversion des formes d'onde pour l'analyse des ondes de surface." Phd thesis, Ecole Nationale Supérieure des Mines de Paris, 2013. http://pastel.archives-ouvertes.fr/pastel-00932790.

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L'amélioration des images sismiques peut aider à mieux contraindre l'exploration deshydrocarbures. Les ondes élastiques qui se propagent dans la Terre peuvent être classifiéescomme ondes de volume et ondes de surface. Si ces dernières sont les plus énergétiques,seules les ondes de volume sont couramment considérées comme des signaux utiles.Cependant, les ondes de surface sont utiles pour caractériser la proche sub-surface.Classiquement, les ondes de surface sont analysées dans des contextes de propriétésélastiques localement 1D.Nous proposons une modification de l'inversion des formes d'onde c

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Guillemoteau, Julien. "Méthodologie d'interprétation en électromagnétisme aéroporté." Phd thesis, Université de Strasbourg, 2012. http://tel.archives-ouvertes.fr/tel-00823207.

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Ce travail de thèse apporte des éléments méthodologiques pour l'interprétation rapide de données électromagnétiques transitoires (TEM) aéroportées. Dans un premier temps, nous nous sommes intéressés au problème de l'inversion 1D qui est, à ce jour, un traitement standard. Nous nous sommes ensuite focalisés sur le problème de l'inversion 2D rapide. En nous basant sur les résultats de modélisations numériques, nous proposons un modèle empirique de sensibilité pour effectuer une inversion 2D rapide. Les tests effectués sur des données synthétiques et réelles s'avèrent très prometteurs. Ensuite, n

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Enqvist, Johan. "Stewardship in an urban world : Civic engagement and human–nature relations in the Anthropocene." Doctoral thesis, Stockholms universitet, Stockholm Resilience Centre, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-146193.

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Never before have humans wielded a greater ability to alter and disrupt planetary processes. Our impact is becoming so noticeable that a new geological epoch has been proposed – the Anthropocene – in which Earth systems might no longer maintain the stable and predictable conditions of the past 12 millennia. This is particularly evident in the rapid expansion of urban areas, where a majority of humans now live and where environmental changes such as rising temperatures and habitat loss are happening faster than elsewhere. In light of this, questions have been raised about what a more responsib

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Montagner, Jean-Paul. "Etude de la structure profonde de la terre a partir des ondes de surface de longue periode." Paris 6, 1986. http://www.theses.fr/1986PA066188.

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Differentes methodes d'inversion de la vitesse de ces ondes sont appliquees a plusieurs regions du globe: ocean pacifique, afrique, ocean indien. La regionalisation suivant l'age du fond oceanique montre que des heterogeneites laterales de vitesse existent jusqu'a au moins 400 km de profondeur et que la correlation entre la tectonique de surface et la structure profonde est meilleure sous l'ocean pacifique que sous l'ocean indien

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Castellanos, Lopez Clara. "Accélération et régularisation de la méthode d'inversion des formes d'ondes complètes en exploration sismique." Phd thesis, Université Nice Sophia Antipolis, 2014. http://tel.archives-ouvertes.fr/tel-01064412.

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Actuellement, le principal obstacle à la mise en œuvre de la FWI élastique en trois dimensions sur des cas d'étude réalistes réside dans le coût de calcul associé aux taches de modélisation sismique. Pour surmonter cette difficulté, je propose deux contributions. Tout d'abord, je propose de calculer le gradient de la fonctionnelle avec la méthode de l'état adjoint à partir d'une forme symétrisée des équations de l'élastodynamique formulées sous forme d'un système du premier ordre en vitesse-contrainte. Cette formulation auto-adjointe des équations de l'élastodynamique permet de calculer les ch

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Trottier, Nicolas. "Modélisation des écoulement en milieux poreux fracturés : estimation des paramètres par approche inverse multi-échelle." Phd thesis, Université de Strasbourg, 2014. http://tel.archives-ouvertes.fr/tel-01037933.

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Ce travail a pour objectif de développer et d'appliquer une méthode originale permettant de simuler l'écoulement dans un milieu poreux fracturé. Cette méthode repose sur une approche multicouches double continuum permettant de séparer le comportement des différents aquifères présents sur un site. La résolution des écoulements, basée sur la méthode des Eléments Finis de Crouzeix-Raviart, est associée à une méthode inverse (minimisation de type Quasi-Newton combinée à la méthode de l'état adjoint) et à une paramétrisation multi-échelle.La méthode est appliquée dans un premier temps sur l'aquifèr

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Wu, Chia-Ling, and 吳佳玲. "Exploring 10th graders'''''''' earth science problem solving ability." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/17831675399996503583.

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Liu, Yu-Chen, and 劉育呈. "Analyzing the Factors Affecting Survival of Cancer Patients under Multicollinearity Problem." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/ar7a28.

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碩士<br>國立臺北科技大學<br>經營管理系碩士班<br>101<br>In Taiwan, cancer stands as top one of the most lethal disease. Not only affect the quality of life of the patient and their families, but also cause a huge medical expenses and years of potential life lost. In order to reduce the incidence of cancer effectively, we try to find out the causes of low cancer rate by analyzing the pattern and availability of survival influence factors. The objective of this research is to investigate factors which influence survival time of cancer patients. Because survival time can be impacted by factors which are highly corr

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(10676634), Stephen Scheuerle Jr. "Construction of Ballistic Lunar Transfers in the Earth-Moon-Sun System." Thesis, 2021.

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<p>An increasing interest in lunar exploration calls for low-cost techniques of reaching the Moon. Ballistic lunar transfers are long duration trajectories that leverage solar perturbations to reduce the multi-body energy of a spacecraft upon arrival into cislunar space. An investigation is conducted to explore methods of constructing ballistic lunar transfers. The techniques employ dynamical systems theory to leverage the underlying dynamical flow of the multi-body regime. Ballistic lunar transfers are governed by the gravitational influence of the Earth-Moon-Sun system; thus, multi-body grav

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Bansal, Manish. "An Exact Algorithm for Optimal Areal Positioning Problem with Rectangular Targets and Requests." 2010. http://hdl.handle.net/1969.1/ETD-TAMU-2010-12-8746.

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In this thesis, we introduce a new class of problems, which we call Optimal Areal Positioning (OAP), and study a special form of these problems. OAPs have important applications in earth observation satellite management, tele-robotics, multi-camera control, and surveillance. In OAP, we would like to find the optimal position of a set of floating geometric objects (targets) on a two-dimensional plane to (partially) cover another set of fixed geometric objects (requests) in order to maximize the total reward obtained from covered parts of requests. In this thesis, we consider the special form of

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Chen, Li-Ling, and 陳俐陵. "The problem solving process for Standardized test (multiple-choice questions) on Earth Science: An eye tracking analysis." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/ugwaz4.

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博士<br>國立臺灣師範大學<br>科學教育研究所<br>106<br>Since standardized tests are used frequently in measuring student performance, the problem solving process and strategies which help students succeed is concerned. The purpose of this research was to reveal the cognitive features of reading process with eye movement analysis and interview data synthesis, and how scientific epistemological beliefs affect performance. The eighteen standardized Earth Science questions were from the national college entrance examination (CEE) in Taiwan, and were then categorized into four levels according to Revised Bloom's Taxo

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(5930747), Brian P. McCarthy. "Characterization of Quasi-Periodic Orbits for Applications in the Sun-Earth and Earth-Moon Systems." Thesis, 2019.

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<div>As destinations of missions in both human and robotic spaceﬂight become more exotic, a foundational understanding the dynamical structures in the gravitational environments enable more informed mission trajectory designs. One particular type of structure, quasi-periodic orbits, are examined in this investigation. Speciﬁcally, eﬃcient computation of quasi-periodic orbits and leveraging quasi-periodic orbits as trajectory design alternatives in the Earth-Moon and Sun-Earth systems. First, periodic orbits and their associated center manifold are discussed to provide the background for the ex

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Munoz, Jean-Philippe. "Sun-perturbed dynamics of a particle in the vicinity of the Earth-Moon triangular libration points." 2008. http://hdl.handle.net/2152/17944.

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This study focuses on the Sun's influence on the motion near the triangular libration points of the Earth-Moon system. It is known that there exists a very strong resonant perturbation near those points that produces large deviations from the libration points, with an amplitude of about 250,000 km and a period of 1,500 days. However, it has been shown that it is possible to find initial conditions that negate the effects of that perturbation, even resulting in stable, although very large, periodic orbits. Using two different models, the goal of this research is to determine the initial configu

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Tzeng, Ly-Ing, and 曾麗英. "A comprison of expert and non-expert junior high school earth science teachers'' content knowledge and problem-solving abilities in Taipei city." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/54998298306625769440.

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(9193685), Siwei Fan. "The Light Curve Simulation and Its Inversion Problem for Human-Made Space Objects." Thesis, 2020.

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Shape and attitude of near-Earth objects directly affect the orbit propagation via drag and solar radiation pressure. Obtaining information beyond the object states (position and velocity) is integral to identifying an object. It also enables tracing origin and can improve the orbit accuracy. For objects that have a significant distance to the observer, only non-resolved imaging is available, which does not show any details of the object. So-called non-resolved light curve measurements, i.e. photometric measurements over time can be used to determined the shape of space objects using a two ste

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