Relevant bibliographies by topics / Terrain modelling / Dissertations / Theses
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Dissertations / Theses on the topic 'Terrain modelling'

Author: Grafiati
Published: 4 June 2021
Last updated: 26 July 2025

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1

Norberg, Johan. "Large Scale Terrain Modelling for Autonomous Mining." Thesis, Linköpings universitet, Reglerteknik, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-57334.

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This thesis is concerned with development of a terrain model using Gaussian Processes to support the automation of open-pit mines. Information can be provided from a variety of sources including GPS, laser scans and manual surveys. The information is then fused together into a single representation of the terrain together with a measure of uncertainty of the estimated model. The model is also used to detect and label specific features in the terrain. In the context of mining, theses features are edges known as toes and crests. A combination of clustering and classification using supervised lea
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2

Stangroom, Paul. "CFD modelling of wind flow over terrain." Thesis, University of Nottingham, 2004. http://eprints.nottingham.ac.uk/10112/.

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The aim of this project is to show the capabilities of a RANS based numerical model in accurately analysing wind flow over real terrain regions, and assess its usage for wind energy applications. The main reasons this type of model is not widely used in the wind energy industry are due to the computational cost and the expertise required to operate such a model. These factors are assessed and various setups of the model are examined to consider the accuracy attained. The modelling process is also automated to reduce necessary user input in the process. The models performance is tested over a n
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3

Noréus, Olof. "Modelling of six-wheeled electric transmission terrain vehicle." Licentiate thesis, KTH, Aeronautical and Vehicle Engineering, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4291.

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<p>In vehicles with electric transmission and independent wheel stations, it is possible to have a possibility to control propulsion, steering and suspension individually for each wheel. This makes it possible to improve mobility, performance and driving safety. The long term goal of this work is to develop a methodt hat can evaluate and improve the mobility of such vehicles in terrain. This contribution concerns how a six wheeled electric transmission vehicle should be modelled to enable evaluation of the dynamic behaviour in different type of terrain. This is made by combining modelling of v
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4

Noréus, Olof. "Modelling of six-wheeled electric transmission terrain vehicle /." Stockholm : Kungl. tekniska högskolan, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4291.

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5

Hannah, Paul. "Application of wind modelling techniques in complex terrain." Thesis, University of East Anglia, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.272741.

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6

Sun, Hua. "Digital terrain modelling of catchment erosion and sedimentation /." Title page, contents and abstract only, 1998. http://web4.library.adelaide.edu.au/theses/09PH/09phs9565.pdf.

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7

Quinn, Paul F. "The role of digital terrain analysis in hydrological modelling." Thesis, Lancaster University, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.331974.

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8

Li, Zhilin. "Sampling strategy and accuracy assessment for digital terrain modelling." Thesis, University of Glasgow, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.303330.

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9

Joyce, Andrew Noel. "Modelling surface climate over complex terrain for landscape ecology." Thesis, Durham University, 2000. http://etheses.dur.ac.uk/4245/.

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Climate exerts a fundamental control on ecosystem function, species diversity and distribution. Topographic variability may influence surface climate, through processes operating at a landscape- scale. To quantify and model such influences, the topography of a 72 km(^2) area of complex terrain, (including the Moor House National Nature Reserve in northern England) was analysed at 50 m resolution. A suite of topographic variables was created, including distance relative to the Pennine ridge (dist), and elevation difference between each grid cell and the lowest grid cell within a specified neigh
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10

Goode, Kevin. "Two-dimensional modelling of momentum fluxes to heterogeneous terrain." Thesis, University of Reading, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.244905.

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11

Kawale, Sujay J. "Implication of Terrain Topology Modelling on Ground Vehicle Reliability." Thesis, Virginia Tech, 2010. http://hdl.handle.net/10919/31241.

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The accuracy of computer-based ground vehicle durability and ride quality simulations depends on accurate representation of road surface topology as an excitation to vehicle dynamics simulation software, since most of the excitation input to a vehicle as it traverses terrain is provided by the surface topology. It is not computationally efficient to utilise physically measured terrain topology for these simulations since extremely large data sets would be required to represent terrain of all desired types. Moreover, performing repeated simulations on the same set of measured data would not p
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12

Guo, Xuewen. "An assessment of mesoscale wind modelling techniques in complex terrain." Thesis, University of East Anglia, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.327952.

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13

Barkwith, Andrew K. A. P. "Observation and modelling of variability in flow over complex terrain." Thesis, University of Salford, 2009. http://usir.salford.ac.uk/26563/.

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This thesis examines the way in which remote sensing instrumentation can be used to advance our understanding of the interactions between complex terrain and the atmospheric boundary layer (ABL). When mean flow speed is of moderate strength and the ABL is stable, mechanical effects will dominate thermal effects in modifying flow speed and direction. Boundary layer measurements were made using the scanning Salford 10 micron pulsed CO2 Doppler lidar during the 2005 Convective Storm Initiation Project (CSIP), above the heterogeneous orography that surrounds Faccombe, Hampshire, UK. A new method o
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14

Walshe, John D. "CFD modelling of wind flow over complex and rough terrain." Thesis, Loughborough University, 2003. https://dspace.lboro.ac.uk/2134/7827.

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A model has been developed using the general-purpose Navier-Stokes solver CFX4 to simulate Atmospheric Boundary Layer flow over complex terrain. This model has been validated against the measured data from the Askervein Hill experiment, and has been shown to perform well. The CFD model is also compared to the WAsP linear model of wind flow over topography, and a significant improvement is noted for flow over complex topography. Boundary conditions, gridding issues and sensitivity to other solver parameters have all been investigated. An advanced roughness model has been developed to simulate f
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15

Conan, Boris. "Wind resource accessment in complex terrain by wind tunnel modelling." Phd thesis, Université d'Orléans, 2012. http://tel.archives-ouvertes.fr/tel-00843645.

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To benefit from strong winds, an increasing number of wind turbines are placed in complex terrains. But complex terrains means complex flows and difficult wind resource assessment. This study proposed to use wind tunnel modelling to evaluate the wind in a complex topography. The goal of this study is to evaluate the possibilities of wind resources assessment by wind tunnel modelling and to quantify the important modelling parameters. The lower part of the atmosphere, the atmospheric boundary layer (ABL) is defined by a velocity and a turbulence gradient. The ABL is reproduced in the wind tunne
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16

Höfler, Veit, Christine Wessollek, and Pierre Karrasch. "Modelling prehistoric terrain Models using LiDAR-data: A geomorphological approach." SPIE, 2015. https://tud.qucosa.de/id/qucosa%3A35056.

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Terrain surfaces conserve human activities in terms of textures and structures. With reference to archaeological questions, the geological archive is investigated by means of models regarding anthropogenic traces. In doing so, the high-resolution digital terrain model is of inestimable value for the decoding of the archive. The evaluation of these terrain models and the reconstruction of historical surfaces is still a challenging issue. Due to the data collection by means of LiDAR systems (light detection and ranging) and despite their subsequent pre-processing and filtering, recently anthropo
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17

Jordan, Gyözö. "Terrain Modelling with GIS for Tectonic Geomorphology : Numerical Methods and Applications." Doctoral thesis, Uppsala universitet, Miljö- och landskapsdynamik, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-4635.

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Analysis of digital elevation models (DEMs) by means of geomorphometry provides means of recognising fractures and characterising the morphotectonics of an area in a quantitative way. The objective of the thesis is to develop numerical methods and a consistent GIS methodology for tectonic geomorphology and apply it to test sites. Based on the study of landforms related to faults, geomorphological characteristics are translated into mathematical and numerical algorithms. The methodology is based on general geomorphometry. In this study, the basic geometric attributes (elevation, slope, aspect a
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18

PETTERSSON, CARL. "Modelling and simulation of human path findingthrough terrain while avoiding detection." Thesis, KTH, Skolan för datavetenskap och kommunikation (CSC), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-142356.

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Training military commanders using simulated battlefields currently requires a large staff of operators behind the scenes due to insufficient autonomy in the simulated agents. If a more autonomous behaviour can be achieved, simulations can be scaled up without requiring a corresponding increase in staff and associated equipment. When greater autonomy is achieved, one behavioural aspect that is interesting to develop is the agent’s movement through and strategic usage of the terrain. The aim of this project was to examine the feasibility of modelling this type of behaviour. To this end, agents
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19

Ersson, Back Tomas, Jundén Linus, Urban Bergsten, and Martin Servin. "Simulations of Mechanized Planting : Modelling Terrain and Crane-Mounted Planting Devices." Umeå universitet, Institutionen för fysik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-68450.

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When reforesting clearcuts in southern Sweden, the Bracke Planter has shown to plant seedlings with better planting quality than operational manual tree planting (Ersson and Petersson 2011). Consequently, there is an increasing demand for intermittently advancing tree planting machines with crane-mounted planting devices in southern Sweden. Nevertheless, regardless of using one- (Bracke Planter) or two-headed planting devices (M-Planter), today’s average planting machine productivity is still too low (Rantala and Laine 2010, Ersson et al. 2011) for planting machines to cost-wise compete with m
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20

Siili, Tero. "Two-dimensional modelling of thermal terrain-induced mesoscale circulations in Mars' atmosphere /." Helsinki : Finnish Meteorological Inst, 1999. http://www.gbv.de/dms/goettingen/323758908.pdf.

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21

Makridis, Alexandros. "Modelling of wind turbine wakes in complex terrain using computational fluid dynamics." Thesis, University of Edinburgh, 2012. http://hdl.handle.net/1842/6231.

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This thesis focuses on modelling of wind turbine wakes when they are affected by real complex terrain features, such as hills and forests, and also examines the effect of the rotational momentum imparted to the downstream wake from the rotor blades. Modelling work is carried out using the commercial Computational Fluid Dynamics (CFD) solver FLUENT. Motivation for this project was the fact that there is currently limited knowledge on several issues that affect the operation of a wind farm in a complex terrain environment. Wind developers normally use commercial, easy-to-use software (such as WA
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22

Lin, Yu-Ching. "Digital Terrain Modelling from Small-Footprint Full-Waveform Airborne Laser Scanning Data." Thesis, University of Newcastle Upon Tyne, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.515066.

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23

Furtado, Henrique. "Procedural Generation of Volumetric Data for Terrain." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-260320.

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A procedural method is proposed to generate volumetric data for terrain using a surface height map and information about materials as input. In contrast to previous explored methods this approach takes advantage of the extensive research on surface terrain generation by adapting the material layers to the topology of the input terrain. The method allows the user to specify materials as stratified or eroded, which are generated differently: stratified materials are stacked to generate material layers while eroded materials accumulate on even terrain. We compare a thermal erosion method and an o
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24

Hartshorne, James Byng. "Assessing the influence of digital terrain model characteristics on tropical slope stability analysis." Thesis, University of Bristol, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.336822.

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25

Durrant, Adrian Michael. "A computer-aided simulation of hydraulic tailings disposal." Thesis, Loughborough University, 1988. https://dspace.lboro.ac.uk/2134/28025.

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Computer-aided tools appropriate to architecture, engineering and construction have been Summarised, including digital terrain modelling (DTM), computer-aided design and draughting (CADD) and database management systems (DBMS). DTM and CADD techniques have been applied to simulating the hydraulic filling of tailings, or mine waste dams. A relational DBMS was used to structure and manage filling and terrain data relevant to hydraulic tailings disposal at the Wheal Jane mine in Cornwall.
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26

Apsley, David D. "Numerical modelling of neutral and stably stratified flow and dispersion in complex terrain." Thesis, University of Surrey, 1995. http://epubs.surrey.ac.uk/649/.

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27

Muleya, Franco. "Modelling wheeled construction plant performance in clay and sandy terrain : a terramechanics perspective." Thesis, Anglia Ruskin University, 2014. http://arro.anglia.ac.uk/550362/.

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This research has investigated the effect of tyre rutting of wheeled construction plant performance traversing in wet and deformable terrain, specifically clay and sand. The purpose was to translate the wheel rutting into performance reduction measured in drawbar-pull. The ultimate goal was to translate the power loss into practical effects on cost, time and other economic variations on construction projects that are characterised by movement of wheeled plant on long haulage deformable roads. In order to achieve this aim, mathematical modelling was deployed based on Newton’s laws of motion, pr
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Muleya, Franco. "Modelling wheeled construction plant performance in clay and sandy terrain: a terramechanics perspective." Thesis, Anglia Ruskin University, 2014. https://arro.anglia.ac.uk/id/eprint/550362/1/FRANCO%20MULEYA%20PHD%20FINAL%20COPY.pdf.

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This research has investigated the effect of tyre rutting of wheeled construction plant performance traversing in wet and deformable terrain, specifically clay and sand. The purpose was to translate the wheel rutting into performance reduction measured in drawbar-pull. The ultimate goal was to translate the power loss into practical effects on cost, time and other economic variations on construction projects that are characterised by movement of wheeled plant on long haulage deformable roads. In order to achieve this aim, mathematical modelling was deployed based on Newton’s laws of motion, p
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29

Gwynn, Timothy. "A user interface for terrain modelling in virtual reality using a head mounted display." Master's thesis, Faculty of Science, 2021. http://hdl.handle.net/11427/33707.

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The increased commercial availability of virtual reality (VR) devices has resulted in more content being created for virtual environments (VEs). This content creation has mainly taken place using traditional desktop systems but certain applications are now integrating VR into the creation pipeline. Therefore we look at the effectiveness of creating content, specifically designing terrains, for use in immersive environments using VR technology. To do this, we develop a VR interface for terrain creation based on an existing desktop application. The interface incorporates a head-mounted display a
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30

Jastremski, John A. (John Arnold) Carleton University Dissertation Engineering Mechanical and Aerospace. "Further developments in the modelling of the performance of pneumatic tires over deformable terrain." Ottawa, 1994.

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31

Weinstein, Benjamin Ralph. "Modelling photochemical air pollution from industrial and biogenic emissions in the Terrace-Kitimat valley : a constrained coastal airshed with complex terrain." Thesis, University of British Columbia, 2015. http://hdl.handle.net/2429/55886.

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This study investigates the worst-case ambient concentrations of O₃ and its precursors (NOx and VOCs) that may occur from the construction of large industrial facilities in the Terrace-Kitimat valley airshed. This research is important as the Terrace-Kitimat valley naturally emits high levels of biogenic VOCs in the summer and many of the proposed facilities will, if constructed, emit high quantities of NOX. To date, literature concerning O₃ production form industrial development in coastal airsheds with complex terrain is sparse. The Comprehensive Air Quality Model with Extensions (CAMx) was
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Kirmizigul, Ugur. "Design Of A Mobile Robot To Move On Rough Terrain." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/2/12606814/index.pdf.

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In this thesis work, a mobile robot is designed to be used in search and rescue operations to help the human rescue workers. The difficult physical conditions in the ruins obstruct the movement. Therefore, it is aimed to design a search and rescue robot which can move easily on rough terrain and climb over the obstacles. The designed robot is made up of three modules. A connecting unit is designed that is situated between each module. This connecting unit which is composed of two universal and one revolute joint gives 5 DOF relative motions to the modules. On the other hand, the wheel&rsquo<br
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33

McClean, Colin John. "The scale-free and scale-bound properties of land surfaces : fractal analysis and specific geomorphometry from digital terrain models." Thesis, Durham University, 1990. http://etheses.dur.ac.uk/5999/.

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The scale-bound view of landsurfaces, being an assemblage of certain landforms, occurring within limited scale ranges, has been challenged by the scale-free characteristics of fractal geometry. This thesis assesses the fractal model by examining the irregularity of landsurface form, for the self-affine behaviour present in fractional Brownian surfaces. Different methods for detecting self-affine behaviour in surfaces are considered and of these the variogram technique is shown to be the most effective. It produces the best results of two methods tested on simulated surfaces, with known fractal
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34

Katurji, Marwan. "Turbulence and airflow variations in complex terrain: a modelling and field measurement approach for wind turbine siting." Thesis, University of Canterbury. Geography, 2011. http://hdl.handle.net/10092/5934.

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As the demand for global renewable energy grows, so does the demand for more efficient energy conversion machines and better wind resource assessment. The need to convert as much energy as possible with little cost remains the biggest challenge. In the wind energy sector, the quantity of the resource “wind” is not hard to locate, as with current ground and space based remote sensing technologies, and climate reanalysis techniques, the mapping of average wind speeds across the globe is achievable. The difficulty lies in identifying the “quality” of the wind resource. “Quality” is the measure of
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35

Bodnar, Matthew Michael. "Modelling geochemical dispersion above a buried polymetallic volcanogenic massive sulphide deposit in a recently glaciated terrain." Thesis, University of British Columbia, 2017. http://hdl.handle.net/2429/64236.

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Modern society requires a resource supply for the continual development of infrastructure and technology. The discovery of new mineral deposits is challenging as much of North America is covered by Quaternary sediments that obscure bedrock geology. Enhanced methods in exploration geochemistry, capable of detecting mineral deposits through complex cover, must be developed to satisfy global resource demands. Detailed landscape and surficial material mapping over the Lara polymetallic volcanogenic massive sulphide (VMS) deposit were used to establish a landscape evolution model and identify n
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Piermattei, Livia. "THE USE OF STRUCTURE FROM MOTION TECHNOLOGIES FOR HIGH-RESOLUTION TERRAIN MODELLING ON HIGH ALTITUDE CATCHMENTS." Doctoral thesis, Università degli studi di Padova, 2016. http://hdl.handle.net/11577/3427116.

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The research project developed in this Thesis involves the application of close-range photogrammetry based on the Structure from Motion (SfM) approach that allows reconstructing the 3D point cloud of the photographed object from a sequence of overlapping images taken with a common digital camera. Thanks to the characteristics of high portability of the equipment, flexibility of the method to reconstruct surface at different scale with high resolution, low-cost, and ease of use also for not expertise during both acquisition and processing phase, the SfM-photogrammetry is becoming a valid altern
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Kudowor, Andrew Yao Tete. "Subsurface data management and volume estimation : techniques, procedures, and concepts." Thesis, University of Newcastle Upon Tyne, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.285787.

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Colombo, Pedro. "Modelling dense water flows through sills in large scale realistic ocean models : demonstrating the potential of a hybrid geopotential/terrain-following vertical coordinate." Thesis, Université Grenoble Alpes (ComUE), 2018. http://www.theses.fr/2018GREAU017/document.

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Dans le jargon de l’océanographie physique, un «overflow » est une masse d’eau dense, formée sur un plateau continental ou dans une mer marginale, qui rejoint l’océan ouvert en s’écoulant par-delà de fortes contraintes topographiques telles que d’étroits détroits, des seuils ou des talus continentaux particulièrement pentus. Ces processus d'overflow jouent un rôle important en distribuant les flux de chaleur et de sel dans l'océan, car ils alimentent les courants profonds et la plus grande partie des eaux profondes de l'océan global. Une représentation irréaliste de ces processus dans les modè
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Husson, Angélique. "Impact de la composition minéralogique des sédiments sur la biodisponibilité de l’Uranium ˸ Une approche intégrant laboratoire-terrain-bioindicateur-calcul de spéciation." Electronic Thesis or Diss., Paris Sciences et Lettres (ComUE), 2019. http://www.theses.fr/2019PSLEM020.

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La directive cadre européenne sur l’eau initiée en 2000 a permis d’établir de nombreuses normes de qualité environnement au cours des 18 dernières années pour les composés issus de l’activité anthropique. Cependant la présence naturelle de l’uranium dans l’environnement ainsi que sa réactivité complique la construction des normes. Le transfert de l’uranium entre le sédiment, l’eau et le compartiment biologique est un sujet complexe. En effet, le passage de l’uranium au travers de la membrane cellulaire peut être lié à la composition minéralogique ainsi qu’aux paramètres physico-chimiques. L’ob
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Belle, Pierre. "Contribution des processus hydrologiques et hydrogéologiques aux glissements de terrain de grande ampleur : application au contexte tropical de la Réunion." Thesis, La Réunion, 2014. http://www.theses.fr/2014LARE0022/document.

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Les eaux souterraines constituent un des principaux facteurs de contrôle influençant l'activité des glissements de terrain. L'étude hydrogéologique constitue donc une étape incontournable dans la compréhension de leur fonctionnement, en vue de prédire leur déplacement ou d'adapter les solutions d'assainissement. Cependant, les aquifères qui se développent au sein des glissements de terrain sont généralement complexes, et la compréhension de l'hydrogéologie des grands glissements reste encore aujourd'hui une problématique majeure. Dans un contexte climatique extrême de type tropical humide, les
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Mita, Mara. "Assessment of seismic displacements of existing landslides through numerical modelling and simplified methods." Electronic Thesis or Diss., Université Gustave Eiffel, 2023. http://www.theses.fr/2023UEFL2075.

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Les glissements de terrain sismo-induits sont des effets secondaires fréquents des séismes qui peuvent provoquer des dommages plus importants que les séismes eux-mêmes. Prévoir ces phénomènes est donc essentiel pour la gestion des risques dans les régions sismiques. Les déplacements co-sismiques sont généralement évalués par la méthode « bloc rigide » de Newmark (1965). Malgré ses limites, cette méthode a deux avantages: i) des temps de calcul relativement courts, ii) une compatibilité avec les logiciels SIG pour des analyses à l'échelle régionale. Les modélisations numériques complexes permet
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Schlögel, Romy. "Quantitative landslide hazard assessment with remote sensing observations and statistical modelling." Thesis, Strasbourg, 2015. http://www.theses.fr/2015STRAH009/document.

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La création d’inventaires de glissements de terrain sert de base à l’évaluation quantitative de l’aléa et à la gestion du risque. Les cartes d’inventaires de mouvements gravitaires sont produites en utilisant des méthodes conventionnelles (campagnes de mesures de terrain, interprétation visuelle de photographies aériennes) et par des techniques de télédétection plus innovantes. Une des techniques les plus prometteuses pour la détection et la cartographie des glissements de terrain fait appel à la mesure de la déformation du sol par interférométrie radar satellitaire (InSAR). Cette thèse est co
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Höfler, Veit, Christine Wessollek, and Pierre Karrasch. "Knowledge-based modelling of historical surfaces using lidar data." SPIE, 2016. https://tud.qucosa.de/id/qucosa%3A35116.

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Currently in archaeological studies digital elevation models are mainly used especially in terms of shaded reliefs for the prospection of archaeological sites. Hesse (2010) provides a supporting software tool for the determination of local relief models during the prospection using LiDAR scans. Furthermore the search for relicts from WW2 is also in the focus of his research.¹ In James et al. (2006) the determined contour lines were used to reconstruct locations of archaeological artefacts such as buildings.² This study is much more and presents an innovative workflow of determining historical
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Yang, Meng Verfasser], Christian [Akademischer Betreuer] Hirt, Dimitrios [Gutachter] Tsoulis, Christian [Gutachter] Hirt, and Roland [Gutachter] [Pail. "Investigation of the residual terrain modelling (RTM) technique for high-frequency gravity calculations / Meng Yang ; Gutachter: Dimitrios Tsoulis, Christian Hirt, Roland Pail ; Betreuer: Christian Hirt." München : Universitätsbibliothek der TU München, 2020. http://nbn-resolving.de/urn:nbn:de:bvb:91-diss-20200108-1521921-1-4.

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Yang, Meng [Verfasser], Christian [Akademischer Betreuer] Hirt, Dimitrios [Gutachter] Tsoulis, Christian [Gutachter] Hirt, and Roland [Gutachter] Pail. "Investigation of the residual terrain modelling (RTM) technique for high-frequency gravity calculations / Meng Yang ; Gutachter: Dimitrios Tsoulis, Christian Hirt, Roland Pail ; Betreuer: Christian Hirt." München : Universitätsbibliothek der TU München, 2020. http://d-nb.info/120546316X/34.

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46

Wang, Chen. "Large-scale 3D environmental modelling and visualisation for flood hazard warning." Thesis, University of Bradford, 2009. http://hdl.handle.net/10454/3350.

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3D environment reconstruction has received great interest in recent years in areas such as city planning, virtual tourism and flood hazard warning. With the rapid development of computer technologies, it has become possible and necessary to develop new methodologies and techniques for real time simulation for virtual environments applications. This thesis proposes a novel dynamic simulation scheme for flood hazard warning. The work consists of three main parts: digital terrain modelling; 3D environmental reconstruction and system development; flood simulation models. The digital terrain model
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Faria, Bernardes Daniel. "Information Diffusion in Complex Networks : Measurement-Based Analysis Applied to Modelling." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2014. http://tel.archives-ouvertes.fr/tel-01001763.

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Understanding information diffusion on complex networks is a key issue from a theoretical and applied perspective. Epidemiology-inspired SIR models have been proposed to model information diffusion. Recent papers have analyzed this question from a data-driven perspective. We complement these findings investigating if epidemic models calibrate with a systematic procedure are capable of reproducing key spreading cascade properties. We first identify a large-scale, rich dataset from which we can reconstruct the diffusion trail and the underlying network. Secondly, we examine the simple SIR model
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48

Quimbayo-Duarte, Julian. "Modélisation numérique de la couche limite atmosphérique par condition stable en terrain complexe. Application à la qualité de l'air." Thesis, Université Grenoble Alpes (ComUE), 2019. http://www.theses.fr/2019GREAU005/document.

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En hiver, par condition anticyclonique hivernale, les régions montagneuses urbanisées font l'objet de conditions atmosphériques stables et découplées, qui conduisent à des épisodes de forte pollution particulaire. Ce travail de thèse traite de la caractérisation des facteurs de pollution de l'air aux particules par condition stable en vallée alpine encaissée, du point de vue de la dynamique atmosphérique. Ce travail repose sur des simulations numériques idéalisées et en conditions réelles à l'aide du modèle Weather Research and Forecasting (WRF), les particules étant modélisées par un champ de
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49

Zanella, Alain. "Surpression de fluides et fracturation de roches mères en différents contextes tectoniques : modélisation analogique et exemples de terrain." Phd thesis, Université Rennes 1, 2013. http://tel.archives-ouvertes.fr/tel-00980281.

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L'étude des surpressions de fluide et de fracturation hydraulique des roches mères peut nous renseigner sur les mécanismes de génération qui en sont à l'origine. Ces dernières années, l'intérêt pour ces phénomènes s'est largement accru, notamment sous l'influence des sociétés pétrolières qui exploitent les ressources non-conventionnelles au cœur des problèmes énergétiques actuels. Dans ce travail de thèse, nous avons choisi deux approches différentes pour l'étude de ces mécanismes : (1) des exemples de cas géologiques naturels, et (2) le développement de la modélisation analogique. Ainsi, nous
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50

Ji, Jinnan. "Finite elements modelling and analysis of the effect of vegetation on forested slopes stability." Thesis, Montpellier 2, 2011. http://www.theses.fr/2011MON20213.

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L'ingénierie écologique, qui est décrite comme «la gestion de la nature», a d'abord été proposée par Odum en 1971. Dans les dernières décennies, l'ingénierie écologique a été largement consacrée à lutter contre l'érosion des sols et les mouvements de masse, tout en permettant d'assurer la durabilité des écosystèmes. L'objectif de cette thèse est d'évaluer l'impact de peuplements forestiers sur la stabilité de pentes de dimension finie, en considérant à la fois les effets mécaniques et hydrologiques des racines peu profondes contre les glissements de terrain. Deux sites forestiers monospécifiqu
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