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Dissertations / Theses on the topic 'Gravity changes'

Author: Grafiati

Published: 10 March 2023

Last updated: 31 July 2025

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1

Setiawan, Ari. "Modeling of Gravity Changes on Merapi Volcano." Phd thesis, [S.l. : s.n.], 2003. https://tuprints.ulb.tu-darmstadt.de/362/17/cv.pdf.

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Merapi volcano, located in Central Java, is one of the most active volcanoes in Indonesia. 2 million people are living in its immediate neighborhood. Therefore Merapi was selected within the International Decade of Natural Disaster Reduction (IDNDR) of UNESCO as one of 15 so called high risk volcanoes in the world. National and International research groups from Indonesia, France, Netherlands, Japan, USA and Germany are working on Merapi. Different methods are applied on Merapi to study the volcanic processes and to improve the possibilities to predict future eruptions. In this thesis the impo

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2

Doi, Koichiro. "Study on Gravity Changes Induced by Atmospheric Loading." 京都大学 (Kyoto University), 1992. http://hdl.handle.net/2433/168819.

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本文データは平成22年度国立国会図書館の学位論文(博士)のデジタル化実施により作成された画像ファイルを基にpdf変換したものである<br>Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(理学)<br>甲第4973号<br>理博第1370号<br>新制||理||765(附属図書館)<br>UT51-92-J20<br>京都大学大学院理学研究科地球物理学専攻<br>(主査)教授中川一郎, 教授田中寅夫, 教授住友則彦<br>学位規則第4条第1項該当

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3

Anjasmara, Ira Mutiara. "Validating methods to infer mass changes from satellite gravity measurements using Synthetic Earth Gravity Modelling." Thesis, Curtin University, 2013. http://hdl.handle.net/20.500.11937/2379.

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Leakage properties of isotropic and anisotropic filters used to recover mass changes from space gravity observations are studied. These are done through the use of gravity induced by simulated mass changes within a closed-loop validation procedure. Results show that the use of filter techniques can introduce significant errors introducing distortions between recovered and simulated mass. Previously not well known, the study revealed that leakage is dependent on the geographic location if the mass change considered.

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4

Takada, Hiroki, Yoshiyuki Kitaoka, Satoshi Iwase, et al. "Characteristic Changes of Sway of Center of Gravity with Advancing Afe." Research Institute of Environmental Medicine, Nagoya University, 2003. http://hdl.handle.net/2237/7608.

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5

Morrow, Eric. "Estimates of Land Ice Changes from Sea Level and Gravity Observations." Thesis, Harvard University, 2014. http://dissertations.umi.com/gsas.harvard:11385.

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Understanding how global ice volume on the Earth has changed is of significant importance to improving our understanding of the climate system. Fortunately, the geographically unique perturbations in sea level that result from rapid changes in the mass of, otherwise difficult to measure, land-ice reservoirs can be used to infer the sources and magnitude of melt water. We explore the history of land-ice mass changes through the effect that these mass fluxes have had on both global and regional gravity and sea-level fields.<br>Earth and Planetary Sciences

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6

Cadwell, John Andres Jr. "Control of Longitudinal Pitch Rate as Aircraft Center of Gravity Changes." DigitalCommons@CalPoly, 2010. https://digitalcommons.calpoly.edu/theses/426.

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In order for an aircraft to remain in stable flight, the center of gravity (CG) of an aircraft must be located in front of the center of lift (CL). As the center of gravity moves rearward, pitch stability decreases and the sensitivity to control input increases. This increase in sensitivity is known as pitch gain variance. Minimizing the pitch gain variance results in an aircraft with consistent handling characteristics across a broad range of center of gravity locations. This thesis focuses on the development and testing of an open loop computer simulation model and a closed loop control sy

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7

Marriott, A. D. "'Appropriately related changes' : the meaning of narrative in Thomas Pynchon's 'Gravity Rainbow'." Thesis, University of Manchester, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.356712.

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8

Borden, Emily C. "The Relationship and Seasonal Changes of Hydration Measures in Collegiate Wrestlers." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1523430813791537.

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9

Vassalli, Melissa <1977&gt. "Numerical simulations of magma chamber dynamics at Campi Flegrei, and associated seismicity, deformation and gravity changes." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2008. http://amsdottorato.unibo.it/986/1/Tesi_Vassalli_Melissa.pdf.

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Understanding the complex relationships between quantities measured by volcanic monitoring network and shallow magma processes is a crucial headway for the comprehension of volcanic processes and a more realistic evaluation of the associated hazard. This question is very relevant at Campi Flegrei, a volcanic quiescent caldera immediately north-west of Napoli (Italy). The system activity shows a high fumarole release and periodic ground slow movement (bradyseism) with high seismicity. This activity, with the high people density and the presence of military and industrial buildings, makes

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Vassalli, Melissa <1977&gt. "Numerical simulations of magma chamber dynamics at Campi Flegrei, and associated seismicity, deformation and gravity changes." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2008. http://amsdottorato.unibo.it/986/.

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Understanding the complex relationships between quantities measured by volcanic monitoring network and shallow magma processes is a crucial headway for the comprehension of volcanic processes and a more realistic evaluation of the associated hazard. This question is very relevant at Campi Flegrei, a volcanic quiescent caldera immediately north-west of Napoli (Italy). The system activity shows a high fumarole release and periodic ground slow movement (bradyseism) with high seismicity. This activity, with the high people density and the presence of military and industrial buildings, makes

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11

Schultz, Karl Ulrich. "Etiology of perceived strength changes in the muscles of the legs following locomotion under simulated low gravity." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/49946.

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12

Mahmoud, Ahmad. "Syria-EU Bilateral Trade Relation : An empirical analysis of the changes in export demand between 2006 and 2009." Thesis, Internationella Handelshögskolan, Högskolan i Jönköping, IHH, Nationalekonomi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-19092.

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This study explores the impact of economic downturn in the EU-27 on Syrian trade and the sensitivity of oil and petroleum products to this downturn. This is carried out using a derivation of the gravity model to determine the export demand. Syrian export with its top 30 trading partners as well as the EU-27 are taken into consideration along with various other trade determinants when measuring the changes in total export volume. The study finds that EU-27 is an important source of demand for Syria, but a downturn in the EU economy will not necessarily have a detrimental effect on Syrian econom

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13

Chatterjee, Ani. "Cellular, molecular, and electrophysiological changes in single cells of Ceratopteris during the period of polarity fixation by gravity /." Digital version accessible at:, 1999. http://wwwlib.umi.com/cr/utexas/main.

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14

Agus, Nugroho. "ECONOMIC ANALYSIS ON PRODUCTION CHANGES, MARKET INTEGRATION AND EXPORT CHALLENGES OF COFFEE SECTOR IN INDONESIA." Kyoto University, 2016. http://hdl.handle.net/2433/215968.

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Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(農学)<br>甲第19902号<br>農博第2185号<br>新制||農||1044(附属図書館)<br>学位論文||H28||N5006(農学部図書室)<br>32979<br>京都大学大学院農学研究科生物資源経済学専攻<br>(主査)教授福井清一, 教授伊藤順一, 准教授沈金虎<br>学位規則第4条第1項該当

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15

Creutzfeldt, Noah Angelo Benjamin. "The effect of water storages on temporal gravity measurements and the benefits for hydrology." Phd thesis, Universität Potsdam, 2010. http://opus.kobv.de/ubp/volltexte/2010/4857/.

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Temporal gravimeter observations, used in geodesy and geophysics to study variation of the Earth’s gravity field, are influenced by local water storage changes (WSC) and – from this perspective – add noise to the gravimeter signal records. At the same time, the part of the gravity signal caused by WSC may provide substantial information for hydrologists. Water storages are the fundamental state variable of hydrological systems, but comprehensive data on total WSC are practically inaccessible and their quantification is associated with a high level of uncertainty at the field scale. This stud

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Nooner, Scott L. "Gravity changes associated with underground injections of CO₂ at the Sleipner storage reservoir in the North Sea, and other marine geodetic studies /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2005. http://wwwlib.umi.com/cr/ucsd/fullcit?p3171110.

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17

Garcia, Raquel Soledad. "Topology change in quantum gravity." Thesis, Imperial College London, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.322405.

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18

Joodaki, Gholamreza. "Earth Mass Change Tracking Using GRACE Satellite Gravity Data." Doctoral thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for bygg, anlegg og transport, 2014. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-23969.

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This project is dealing with the estimation of present-day Earth’s mass transport and its redistribution by using observations from Gravity Recovery and Climate Experiment (GRACE) satellite mission. GRACE measures the gravity fluctuations which are primarily related to redistribution of water around the globe. GRACE data has yield profound new insights into melting rates of ice sheets and mountain glaciers, land hydrology, ocean circulation, and sea level rise. In this project, first, the ice melting rate in the Greenlandic ice sheet is studied. This is done by analyzing the time series of mon

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19

Deville, Sabrina. "Caractérisation de la zone non saturée des karsts par la gravimétrie et l'hydrogéologie." Phd thesis, Université Montpellier II - Sciences et Techniques du Languedoc, 2013. http://tel.archives-ouvertes.fr/tel-00829346.

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Les aquifères karstiques constituent l'essentiel des ressources en eau du pourtour Méditerranéen. Au-delà de la zone saturée de ces systèmes, la zone non saturée constitue une entité importante quant au transfert et au stockage temporaire de l'eau. La structure et le fonctionnement de cette entité du karst sont complexes et mal connus à cause du processus de karstification qui hiérarchise la circulation hydrodynamique en son sein. Dans cette étude nous utilisons des méthodes géodésiques et hydrogéologiques afin d'observer de façon directe et de quantifier les processus de transfert et de stock

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20

Rickles, Dean Peter. "Spacetime, change and identity : classical and quantum gravity in philosophical focus." Thesis, University of Leeds, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.414877.

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21

Dosso, Nouho David. "Financial development and climate change challenges with focus on resource-rich countries." Electronic Thesis or Diss., Paris 13, 2024. http://www.theses.fr/2024PA131044.

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Cette thèse explore, d'une part, l'interaction entre le développement financier et la gestion des ressources naturelles, et d'autre part, les défis liés à la vulnérabilité climatique et à la finance climatique, avec un accent particulier sur les pays riches en ressources naturelles. Elle se structure en trois chapitres distincts. Le premier chapitre examine la relation complexe entre l'abondance en ressources naturelles et le développement financier, en mettant l'accent sur la manière dont la qualité des institutions peut atténuer l'impact négatif de l'abondance en ressources naturelles sur le

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22

Diana, Antoine. "Liquid-vapour phase change : nucleate boiling of pure fluid and nanofluid under different gravity levels." Thesis, Queensland University of Technology, 2014. https://eprints.qut.edu.au/65842/1/Antoine_Diana_Thesis.pdf.

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This research was a step towards the comprehension of the nano-particles interaction with bubbles created during boiling. It was aimed at solving the controversies of whether the heat transfer is enhanced or deteriorated during the boiling of the nanofluid. Experiments were conducted in normal gravity and reduced gravity environments on-board the European Space Agency Parabolic Flight Program. The local modification of the thermo-physical properties of the fluid and moreover the modification experienced in the liquid microlayer under the growing vapour bubble were the dominant factors in expla

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23

Wang, Lei. "Coseismic Deformation Detection and Quantification for Great Earthquakes Using Spaceborne Gravimetry." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1331098701.

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24

Ohata, Koji. "Formation conditions of bedforms under sediment-laden gravity currents." Doctoral thesis, Kyoto University, 2021. http://hdl.handle.net/2433/263478.

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25

Chen, Yiqun. "Recovery of terrestrial water storage change from low-low satellite-to-satellite tracking." Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1196098152.

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26

Chima, Kelvin Ikenna. "Tectonostratigraphic evolution of the Western Niger Delta from the Cretaceous to Present." Electronic Thesis or Diss., Sorbonne université, 2020. https://accesdistant.sorbonne-universite.fr/login?url=https://theses-intra.sorbonne-universite.fr/2020SORUS053.pdf.

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Le basculement du delta du Niger occidental au début de son évolution au Crétacé a entraîné le développement d'une surface sismique régionale à centre de bassin, ce qui a facilité le glissement de la gravité du Crétacé au Serravallien. Une augmentation globale des taux de sédimentation s'est produite dans l'ouest du delta du Niger, du Serravallien au Pliocène et pendant la plus grande partie du Pléistocène, ce qui a favorisé la propagation de la gravité. Des schistes mobiles ont été actifs dans l'ouest du delta du Niger, au moins pour le Burdigalien, et ont contrôlé la morphologie, la distribu

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27

Wilkman, Mats. "Determinants of Swedish Pharmaceutical Exports." Thesis, Internationella Handelshögskolan, Högskolan i Jönköping, IHH, Nationalekonomi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-19325.

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In this thesis factors that explain Swedish pharmaceutical export as been analyzed. The period investigated is from 1995 to 2010. The investigation is concluded through the use of a gravity model. It investigates not only the GDP and distance variable but also the effects of GDP/capita, exchange rates and the effect of being a part of the internal market of EU. The effects of having access to the ocean and if the country has English as its official language is investigated as well as the effect of sharing the same religion. The results show that only a smaller subset of countries make up for m

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PERUZZI, COSIMO. "Turbulence Properties of Smooth-Bed Open-Channel Flows with and without Collinear Gravity Waves." Doctoral thesis, Politecnico di Torino, 2020. http://hdl.handle.net/11583/2845794.

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Naudin, Thomas. "Etude des effets de la micro-gravité sur l'atomisation de gouttes de carburants alternatifs émulsionnés." Electronic Thesis or Diss., Nantes Université, 2024. http://www.theses.fr/2024NANU4007.

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L’intérêt de l’émulsification de combustibles à l’aide d’eau réside dans l’amélioration de la qualité de la combustion (et donc dans la réduction d’émissions de polluants) à travers une atomisation secondaire de la goutte nommée micro- explosion. Ce phénomène ayant une probabilité de réalisation dépendant de plusieurs paramètres, l’étude de l’impact de chacun de ces facteurs sur l’occurrence de la micro- explosion est fondamentale. L’objectif des travaux présentés dans ce manuscrit consiste à améliorer la compréhension du phénomène de microexplosion. Pour se faire, l’étude du comportement de l

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Al, Habbaki Patricia. "Les incidences des politiques de commerce extérieur et de change sur les échanges commerciaux des pays du Mashrek (Liban, Syrie Jordanie et Egypte)." Thesis, Tours, 2014. http://www.theses.fr/2014TOUR1007/document.

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En dépit du renforcement de leur ouverture commerciale, le commerce extérieur des pays du Mashrek a presque toujours affiché des chiffres plutôt négatifs. Selon la littérature, l'ouverture commerciale est une des conditions permettant une croissance vigoureuse d'un pays. Néanmoins, la tendance constatée à la lumière des données du commerce de ces pays, traduirait une réalité alarmante. L'ouverture ne s'est pas traduite par une accélération des niveaux des investissements, ni par une création d'emplois. Est-ce que les politiques commerciales et de change menées par les pays du Mashrek sont resp

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Patel, Shagufta Usman. "Improving Performance and Drainage of Coalescing Filters." University of Akron / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=akron1279317322.

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32

Yang, Qian. "Applications of Satellite Geodesy in Environmental and Climate Change." Scholar Commons, 2016. http://scholarcommons.usf.edu/etd/6440.

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Satellite geodesy plays an important role in earth observation. This dissertation presents three applications of satellite geodesy in environmental and climate change. Three satellite geodesy techniques are used: high-precision Global Positioning System (GPS), the Gravity Recovery and Climate Experiment (GRACE) and Interferometric Synthetic Aperture Radar (InSAR). In the first study, I use coastal uplift observed by GPS to study the annual changes in mass loss of the Greenland ice sheet. The data show both spatial and temporal variations of coastal ice mass loss and suggest that a combination

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Azzolin, Marco. "Experimental study of phase change heat transfer in minichannels for ground and space applications." Doctoral thesis, Università degli studi di Padova, 2016. http://hdl.handle.net/11577/3424393.

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Two-phase heat transfer is widely encountered in minichannels heat exchangers such as air-cooled condensers and evaporators for automotive, compact devices for electronic cooling, aluminum condenser for air-conditioning applications, loop heat pipes and capillary pumped loops for space applications. Nowadays there is also an increasing interest on new refrigerants, pure and blended, with a low-GWP. This thesis aims at studying the physical phenomena of condensation by investigating the effect of gravity inside small channels, presenting an experimental analysis during normal gravity and micro

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Abel, Guy, Michael Brottrager, Cuaresma Jesus Crespo, and Raya Muttarak. "Climate, Conflict and Forced Migration." Elsevier, 2019. http://dx.doi.org/10.1016/j.gloenvcha.2018.12.003.

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Despite the lack of robust empirical evidence, a growing number of media reports attempt to link climate change to the ongoing violent conflicts in Syria and other parts of the world, as well as to the migration crisis in Europe. Exploiting bilateral data on asylum seeking applications for 157 countries over the period 2006-2015, we assess the determinants of refugee flows using a gravity model which accounts for endogenous selection in order to examine the causal link between climate, conflict and forced migration. Our results indicate that climatic conditions, by affecting drought sever

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Rosat, Séverine. "Variations temporelles de la gravité en relation avec la dynamique interne de la Terre - Apport des gravimètres supraconducteurs." Phd thesis, Université Louis Pasteur - Strasbourg I, 2004. http://tel.archives-ouvertes.fr/tel-00144439.

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La dynamique et la structure interne de la Terre sont mal contraintes en profondeur, car les signaux induits en surface, de faible amplitude et basse fréquence, atteignent le seuil de détection des sismomètres. La gravimétrie devient un outil privilégié d'investigation de la Terre profonde aux longues périodes. Les variations temporelles de la gravité sont enregistrées en permanence par des gravimètres relatifs cryogéniques. Nous étudions les niveaux de bruit de ces stations sur un large spectre de fréquences allant des modes propres sismiques longue période jusqu'aux marées. Nous montrons que

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Trejo, Peimbert Esli. "Dynamics and Transfers in two phase flows with phase change in normal and microgravity conditions." Phd thesis, Toulouse, INPT, 2018. http://oatao.univ-toulouse.fr/23986/1/Trejo_Esli.pdf.

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Two-phase flows with or without phase change are present in terrestrial and space applications like thermal control of satellites, propellant supply for launchers, and waste water treatment for space exploration missions. Flow boiling experiment with HFE7000 were conducted in a heated tube in vertical upward flow on ground and in microgravity conditions to collect data on flow patterns, pressure drops, heat transfers, void fraction. Void fraction measurements allowed to measure mean gas velocity and the liquid film thickness in annular flow. In microgravity condition, the liquid film thickness

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Sanders, Jessica R. "Actions/Objects: A Knotting." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1276036952.

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Bele, Daniel. "Warden i Israel : En studie av Wardens tillämpning i Israels luftkrig 2006-2009." Thesis, Försvarshögskolan, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:fhs:diva-4053.

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Den amerikanske luftmaktsteoretikern John A Warden III har skrivit ett flertal artiklar och böcker om vad han anser är det bästa sättet att använda luftmakt. Warden förordar luftmaktens offensiva natur och eftersträvar ett snabbt, för egen del, fördelaktigt slut på en konflikt. Warden har bl.a. liknat fienden vid ett system, där han menar att strävan skall ligga i att slå ut fiendens ledarskikt vilket får tillföljd att dess vilja till strid upphör. I detta arbete ges en sammanfattning av, enligt författaren, centrala delar av Wardens teorier. Sammanfattningen mynnar ut i tre stycken parametrar

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Guedidi, Insaf. "Global value chains and deep trade agreements." Electronic Thesis or Diss., Paris 1, 2022. http://www.theses.fr/2022PA01E026.

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Ces dernières années, le phénomène de production de biens « Made in the World » a considérablement augmenté, entraînant une transformation économique progressive de la façon dont nous comprenons les processus de production (Antràs 2020). La présente thèse considère une variété de questions de recherche : La connectivité maritime et les procédures frontalières affectent-elles de la même manière le commerce des biens finaux et le commerce des intrants intermédiaires ? Quelle est l’importance de l’adoption d’Internet pour la participation aux Chaînes de Valeur Mondiales (CVM) ? Quel est l’impact

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Assogbavi, Koutchogna. "Global imbalances and international trade in the era of climate challenges." Electronic Thesis or Diss., Bordeaux, 2024. http://www.theses.fr/2024BORD0120.

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Cette thèse examine empiriquement différentes questions-clés d'économie et de finance internationales sous le prisme de la montée des risques liés au changement climatique et aux politiques d'atténuation. Le premier chapitre analyse les déséquilibres mondiaux des comptes courants, particulièrement depuis la crise de 2008, en identifiant des facteurs comme le développement financier et les variables institutionnelles influençant ces déséquilibres par des variations de l’épargne et des investissements. Les prédictions de comptes courants montrent des excédents au Japon, en Chine et en Allemagne.

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Wimberly, Brent. "Identification of spatiotemporal nutrient patterns and associated ecohydrological trends in the tampa bay coastal region." Honors in the Major Thesis, University of Central Florida, 2012. http://digital.library.ucf.edu/cdm/ref/collection/ETH/id/642.

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Improvements for environmental monitoring and assessment were achieved to advance our understanding of sea-land interactions and nutrient cycling in a coastal bay.; The comprehensive assessment techniques for monitoring of water quality of a coastal bay can be diversified via an extensive investigation of the spatiotemporal nutrient patterns and the associated eco-hydrological trends in a coastal urban region. With this work, it is intended to thoroughly investigate the spatiotemporal nutrient patterns and associated eco-hydrological trends via a two part inquiry of the watershed and its adjac

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Fiorot, Guilherme Henrique. "On unsteady open-channel flows : a contribution to nonstationary sediment transport in runoff flows and to unstable non-Newtonian mudflow studies." Thesis, Rennes, INSA, 2016. http://www.theses.fr/2016ISAR0020/document.

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L'objectif général de cette thèse est l'étude de d'écoulement instationnaire du type coulée de boue dans des canaux naturels. La pluie, source du débit liquide, entraine le ruissellement, responsable du mouillage du sol, de la réduction de sa cohésion et de l'érosion des petites particules de sédiments. A partir de là, le transport de sédiments peut augmenter avec le débit et la pente du sol jusqu'à ce que la concentration en particules atteignent des niveau très importants dans la composition du fluide. Dans une première partie, un banc expérimental a été conçu pour simuler des écoulements ru

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Greaves, Danielle Kathleen. "Désadaptations cardiovasculaires à la microgravité : techniques avancées pour améliorer la mesure et l'évaluation du risque cardiovaculaire induit par les vols spatiaux pour les équipages de longue durée Effects of exercise countermeasure on myocardial contractility measured by 4D speckle tracking during a 21-day head-down bed rest Cardiac and arterial structure and functional changes after four days of dry immersion with and without thigh cuffs Effect of thigh cuff on venous flow redistribution during 4 days in dry immersion." Thesis, Normandie, 2019. http://www.theses.fr/2019NORMC433.

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L'objectif était de quantifier les modifications de la contractilité cardiaque au cours d’un bedrest de 21 jours (HDBR) par la methode speckle tracking 4D et de déterminer si la contre-mesure « exercice » était capable de préserver cette contractilité cardiaque. Les méthodes traditionnelles 2D ne mesurent qu'une variation de la taille du ventricule de la systole à la diastole et ne suivent pas la cinetique des mouvements de contractilité à l’interieur de la paroi. De plus l’echographie 2D ne permet d’acceder qu’a la contractilite longitudinale globale par la mesure de la distance Apex-Valve mi

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Brocheray, Sandra. "Transferts et accumulations sur les marges du Golfe de Gascogne : architecture, fonctionnement et contrôles." Thesis, Bordeaux, 2015. http://www.theses.fr/2015BORD0079/document.

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Ce travail présente une analyse de la morphologie et de la dynamique sédimentaire des systèmes turbiditiques actuels du Cap-Ferret et de Capbreton (sud du Golfe de Gascogne). La reconnaissance effectuée sur le système de Capbreton est la première à le considérer dans son ensemble. Ce travail se base sur des données acoustiques de subsurface (sondeur multifaisceaux, sondeur de sédiments Chirp) et de carottages issues de la campagne océanographique Sargass menée par l’Université de Bordeaux. L’analyse morpho-bathymétrique révèle l’organisation amont-aval des géométries sédimentaires dans ces sys

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MALANDRA, FRANCESCO. "Land use/cover shifts and wildfires as drivers of mountain forest landscape dynamics in the Apennines (Italy)." Doctoral thesis, Università Politecnica delle Marche, 2020. http://hdl.handle.net/11566/274504.

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Con questa tesi di dottorato sono state studiate le dinamiche di paesaggio dell’Italia peninsulare legate a processi di cambiamento di copertura/uso del suolo e ai recenti incendi, nel contesto del cambiamento climatico in atto. I cambiamenti di uso del suolo sono stati analizzati principalmente nelle aree montane dell’intero arco appenninico, mentre gli effetti sul paesaggio di due recenti e rilevanti stagioni di incendi sono stati analizzati estendendo l’area di studio all’Italia peninsulare e alle due isole maggiori (Sardegna e Sicilia). In primo luogo, abbiamo ritenuto appropriato l’utiliz

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Wei, Wei. "Characteristics of the late Mesozoic tectonic evolution of the South China block and geodynamic implications : Multi-approach study on the Qingyang-Jiuhua, Hengshan and Fujian coastal granitic massifs." Phd thesis, Université d'Orléans, 2013. http://tel.archives-ouvertes.fr/tel-01058791.

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The vast distribution and long duration of the Late Mesozoic magmatism in the eastern part of South China presents a unique case in the world. This offers a natural laboratory to study the process of magma genesis, the magma emplacement mode, the relationship between magmatism and tectonics, the geodynamic role on the magma emplacement and lithospheric evolution. Since 50's, particularly 90's of the last century, geoscientists have made important efforts in geological cartography and carried out numerous studies with remarkable scientific achievements, building a solid background to understand

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Cheng, Tze-Chiang, and 程自強. "Gravity Changes in Taiwan：Observations and Analysis." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/37qb2t.

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博士<br>國立交通大學<br>土木工程系所<br>101<br>The temporal gravity changes in Taiwan are used to examine the crustal deformation in Taiwan. All gravity observations are corrected by the environmental effects, such as solid earth tide, ocean tide loading, polar motion, atmosphere and underground water. This study will put a special emphasis on ocean tide loading. Ocean tide loading(OTL) effect of gravity is large in Taiwan and around its nearby area. Three different OTL models are tested to improve the accuracy of absolute gravity around the coast of Taiwan and its islets. The model SGOTL with the latest re

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Kao, Yu-Chi, and 高豫麒. "Gravity and hydrological changes from satellite altimetry and satellite gravimetry." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/23139656104979703042.

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博士<br>國立交通大學<br>土木工程學系<br>98<br>The main research topics of this study are : (1) to determine changes of sea surface heights and oceanic mass using satellite altimetry (SA) and steric heights, and to determine the contributions of such changes to variations of geocenter, J2, and polar motions. (2) to determine lake level changes using SA and Gravity Recovery and Climate Experiment (GRACE) gravimetry data. Using SA and steric heights over October 1992 to December 2007, the following results are obtained : (1) the rates of sea level anomaly (SLA), steric height anomaly and corrected SLA (CSLA)

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Lin, Ting-Jung, and 林廷融. "Temporal Gravity Changes from FORMOSAT-3 and GRACE GPS Tracking Data." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/98725633081021016379.

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博士<br>國立交通大學<br>土木工程學系<br>98<br>This dissertation is aimed at temporal gravity field recovery from the analyses of the high-low satellite-to-satellite tracking (hl-SST) data from the COSMIC and GRACE satellite missions. In order to estimate the time-varying geopotential coefficients, two efficient methodologies, the analytical orbital perturbation (AOP) approach and the residual acceleration (ACC) approach, are developed in the research. With the reference orbits removed, orbital perturbations (difference between kinematic and reference orbits) and residual accelerations (difference between ob

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CHEN, KUAN-HUNG, and 陳冠宏. "Estimation of aquifer specific yields by gravity changes at multiple time scales." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/37bhg5.

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博士<br>國立交通大學<br>土木工程系所<br>107<br>Specific yield (Sy) is the ratio of drainable groundwater in an unconfined aquifer and also a key parameter for evaluating the storage of an underground reservoir. Conventionally, Sy is obtained by pumping tests which manually create a small scaled groundwater level change, but the high cost of well construction restricts the well numbers in the field. Groundwater level change will introduce gravity and land surface change, which can be used to estimate Sy and storage coefficient (S) by the geodetic method. Earlier studies for the geodetic method are largely ba

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