Дисертації з теми "Ground characterization"
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Hagelin, Susanna. "Optical Turbulence Characterization for Ground-Based Astronomy." Doctoral thesis, Uppsala universitet, Institutionen för geovetenskaper, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-132798.
Повний текст джерелаFelaktigt tryckt som Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology 708
Rezaei, Hamid. "Physical and thermal characterization of ground wood chip and ground wood pellet particles." Thesis, University of British Columbia, 2016. http://hdl.handle.net/2429/60914.
Повний текст джерелаApplied Science, Faculty of
Chemical and Biological Engineering, Department of
Graduate
Zhang, Qian. "Wireless Near-ground Channel Characteristics in Several Unlicensed Bands." Ohio University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1219170596.
Повний текст джерелаMoric, Igor. "On-ground characterization of the cold atoms space clock PHARAO." Thesis, Paris 6, 2014. http://www.theses.fr/2014PA066659/document.
Повний текст джерелаThis thesis presents the experimental results obtained during the development and the ground tests of the flight model of the cold atoms space clock PHARAO. PHARAO, the first Primary Frequency Standard (PFS) for space applications, is developed by the French space agency CNES. It is a main instrument of the ESA space mission ACES: Atomic Clock Ensemble in Space with a launch scheduled on 2016. The mission is based on high performances time and frequency comparisons between a payload including PHARAO and ground based clocks to perform tests in fundamental physics. The payload will be installed on an external pallet of the International Space Station. After an introduction on atomic clocks and a summary on the ACES mission, the PHARAO architecture, optimized for microgravity environment, and its operation is described. It is followed by the measurements and the analysis of the frequency stability. On ground the frequency stability is measured at a level of 3.1 10-13 t-1/2. This value is in agreement with the different sources of noise. In space the frequency stability will reach 10-13 t-1/2. Finally the main frequency shifts are analyzed. A detailed study is given on magnetic shield properties, hysteresis and the design of the active magnetic compensation. The objective is to reduce the uncertainty of the second order Zeeman effect within few 10-17. The temperature determination of the atomic environment is also detailed and the goal is to reach an uncertainty on the blackbody frequency shift in the 10-17 range. A preliminary budget on the frequency accuracy of PHARAO on ground is evaluated at 1.1 10-15. This value is compatible with the expected accuracy budget of 3x10-16 when the clock will operate in microgravity. In the next step all the ACES instruments will be assembled for a launch scheduled on 2016
Vorster, Daniel Jacobus. "The use of ground penetrating radar for track substructure characterization." Diss., University of Pretoria, 2012. http://hdl.handle.net/2263/25426.
Повний текст джерелаDissertation (MEng)--University of Pretoria, 2012.
Civil Engineering
unrestricted
Tsoflias, Georgios Padelis. "Hydrogeologic characterization of fractured carbonate aquifers employing ground-penetrating radar /." Digital version accessible at:, 1999. http://wwwlib.umi.com/cr/utexas/main.
Повний текст джерелаHollyer, John Barry. "Ground vibration characterization of a missile system for flutter energy definition." Thesis, Monterey, California : Naval Postgraduate School, 1990. http://handle.dtic.mil/100.2/ADA237026.
Повний текст джерелаThesis Advisor(s): Wu, Edward M. Second Reader: Schmidt, Louis V. "June 1990." Description based on title screen as viewed on March 22, 2010. DTIC Identifier(s): Flight Envelope, External Stores, Aerodynamics Stability, Theses, Sidewinder Missiles, P-3 Aircraft, Antisubmarine Aircraft. Author(s) subject terms: Flutter, P-3, Ground Vibration Tests, Flutter Modeling, Modal Modeling. Includes bibliographical references (p. 68). Also available in print.
Cist, David Bishop. "Ground penetrating radar characterization of geologic structure beneath the Aberjona wetland." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/53040.
Повний текст джерелаIncludes bibliographical references (leaves 232-236).
Ground penetrating radar (GPR) surveys are performed to determine geologic structure and to assist in the characterization and eventual modeling of ground water flow beneath the Well-H region of the Aberjona River in Woburn, Massachusetts. Even though cone penetrometer and coring studies provide point source "ground truth" data about the stratigraphy, soil chemistry, and composition of the first seven meters of peat, sand and silt they are time-consuming and labor intensive. The advantage of GPR is its ability to extend point-source ground truth information into two and three dimensions. This dissertation provides an accurate geologic model of one section of the Aberjona wetland by improving the state of three-dimensional GPR imaging. Data fusion, target implantation, and a novel 3-D migration technique are combined to render the subsurface volume accurately to resolutions of about 30 centimeters in all directions. The technique was tested using various synthetically generated models as well as carefully constructed test pits to verify its accuracy and estimate error. For our surveys in the wetland, we verify the accuracy of our method using the large database of "ground truth" information about subsurface structure and soil properties. We use this information along with data collected for this project to assemble what 3-D geological information we can. For example, direct measurements of soil bulk properties are made at various depths in several locations. Borehole conductivity surveys not only confirm core sample measurements, but also give deep conductivity information not otherwise available. Cone penetrometer surveys provide high vertical resolution to map stratigraphic variation. A 3-D resistivity survey provides general information about the conductivity of the site. In addition to ground truth measurements, several different types of radar surveys were employed to estimate soil electrical properties. A new method of Vertical Radar Profiling (VRP) was developed to provide velocity information at different locations and various depths throughout the wetland. Morphing methods were applied as an interpolation tool for surveys with broadly spaced profiles. A fast three dimensional migration algorithm was developed specifically for GPR imaging that incorporates layered velocity information and soil electrical conductivity. Ultimately, this technique is shown to offer a means of mapping larger regions of wetland stratigraphy more accurately than was currently feasible.
by David Bishop Cist.
Ph.D.
Asalemi, Ali Amini. "Application of seismic cone for characterization of ground improved by vibro-replacement." Thesis, University of British Columbia, 2006. http://hdl.handle.net/2429/30704.
Повний текст джерелаApplied Science, Faculty of
Civil Engineering, Department of
Graduate
LaMontagne, Aurele. "Characterization and quantification of ground heat flux for late season shallow snow." [Boise, Idaho] : Boise State University, 2009. http://scholarworks.boisestate.edu/td/48/.
Повний текст джерелаMurphy, Ellyn Margaret. "Carbon-14 measurements and characterization of dissolved organic carbon in ground water." Diss., The University of Arizona, 1987. http://hdl.handle.net/10150/191131.
Повний текст джерелаNUNES, CASSIANE MARIA FERREIRA. "APPLICATIONS OF GPR -GROUND PENETRATING RADAR- IN THE CHARACTERIZATION OF WEATHERING PROFILES OF." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2002. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=2873@1.
Повний текст джерелаO método GPR Ground Penetrating Radar foi empregado nesta pesquisa visando estimar suas potencialidades como uma metodologia viável para os estudos geológicos, geotécnicos e ambientais em condições brasileiras.Para o alcance deste objetivo foram realizados ensaios em campo procurando avaliar a capacidade deste método na detecção das alterações provenientes da ação intempérica na formação do solo residual, ou seja, estimar a profundidade e espessura dos horizontes pedológicos, e o topo rochoso em um perfil geotécnio. Foram também realizados ensaios em laboratório onde fez-se o monitoramento do efeito da contaminação por hidrocarbonetos em blocos indeformados de solo residual, tanto em condições não saturadas, quanto na zona de saturação, procurando avaliar a aplicabilidade do método GPR na detecção deste tipo de contaminante.Os resultados obtidos permitiram imagear com boa resolução os contrastes bruscos, como o topo da rocha sã e blocos inclusos no solo, mas não a detecção nítida dos horizontes no perfil; e pela análise do monitoramento da contaminação, ainda é recente afirmar que o método GPR possa ser empregado com grande eficiência na detecção de contaminantes orgânicos em solo residual.
The GPR method Ground Penetration Radar was used in this work, aiming at estimating its potentialities as a viable methodology to geological, geotechnical and environmental studies of Brazilian soil-rock conditions.In order to reach this objective, in situ tests have been carried out to evaluate the capability of the method in the detection of characteristics of weathering profiles in residual soils. In this case, the aim was to estimate the depth and width of pedological horizons and the bedrock in a geotechnical profile. Laboratory tests were also carried out in blocks of undisturbed residual soil of gnaissic origin. In these blocks, the effects of contamination by petroleum hydrocarbons were monitored. Both the unsaturated and the vadose zones have been monitored. The main objective in relation to the GPR was to evaluate the applicability of the method in the detection of such contaminants.The results obtained allowed to image gross contacts with good resolution such as soil-intact bedrock contacts and blocks inside soils. However, the clear detection of profile horizons were not well imaged. Regarding the contamination monitoring, it is early to affirm that the GPR method might be employed efficiently in the detection of organic contaminants in residual soils.
Cecotti, Marco. "Development of a remotely-controlled electric vehicle with characterization of the ground grip." Thesis, Oxford Brookes University, 2013. https://radar.brookes.ac.uk/radar/items/36a64d83-4491-4ae5-932b-64103bd97301/1.
Повний текст джерелаWagner, Douglas Vinton 1956. "Isotopic and chemical characterization of ground waters in the vicinity of Flagstaff, Arizona." Thesis, The University of Arizona, 1987. http://hdl.handle.net/10150/191930.
Повний текст джерелаDhulipala, Lakshmi Narasimha Somayajulu. "Bayesian Methods for Intensity Measure and Ground Motion Selection in Performance-Based Earthquake Engineering." Diss., Virginia Tech, 2019. http://hdl.handle.net/10919/88493.
Повний текст джерелаDoctor of Philosophy
Earthquake ground shaking is a complex phenomenon since there is no unique way to assess its strength. Yet, the strength of ground motion (shaking) becomes an integral part for predicting the future earthquake performance of buildings using the Performance-Based Earthquake Engineering (PBEE) framework. The PBEE framework predicts building performance in terms of expected financial losses, possible downtime, the potential of the building to collapse under a future earthquake. Much prior research has shown that the predictions made by the PBEE framework are heavily dependent upon how the strength of a future earthquake ground motion is characterized. This dependency leads to uncertainty in the predicted building performance and hence its seismic design. The goal of this dissertation therefore is to employ Bayesian reasoning, which takes into account the alternative explanations or perspectives of a research problem, and propose robust quantitative methods that aid IM selection and ground motion selection in PBEE The fact that the local intensity of an earthquake can be characterized in multiple ways using Intensity Measures (IM; e.g., peak ground acceleration) is problematic for PBEE because it leads to different PBEE results for different choices of the IM. While formal procedures for selecting an optimal IM exist, they may be considered as being subjective and have multiple criteria making their use difficult and inconclusive. Bayes rule provides a mechanism called change of perspective using which a problem that is difficult to solve from one perspective could be tackled from a different perspective. This change of perspective mechanism is used to propose a quantitative, unified metric for rating alternative IMs. The immediate application of this metric is aiding the selection of the best IM that would predict the building earthquake performance with least bias. Structural analysis for performance assessment in PBEE is conducted by selecting ground motions which match a target response spectrum (a representation of future ground motions). The definition of a target response spectrum lacks general consensus and is dependent on the analysts’ preferences. To encompass all these preferences and requirements of analysts, a Bayesian target response spectrum which is general and flexible is proposed. While the generality of this Bayesian target response spectrum allow analysts select those ground motions to which their structures are the most sensitive, its flexibility permits the incorporation of additional information (preferences) into the target response spectrum development. This dissertation addresses four critical questions in PBEE: (1) how can we best define ground motion at a site?; (2) if ground motion can only be defined by multiple metrics, how can we easily derive the probability of such shaking at a site?; (3) how do we use these multiple metrics to select a set of ground motion records that best capture the site’s unique seismicity; (4) when those records are used to analyze the response of a structure, how can we be sure that a standard linear regression technique accurately captures the uncertainty in structural response at low and high levels of shaking?
Tran, Thao Anh [Verfasser], and Heiko [Akademischer Betreuer] Zimmermann. "Characterization of the ground state pluripotency in planarian / Thao Anh Tran ; Betreuer: Heiko Zimmermann." Saarbrücken : Saarländische Universitäts- und Landesbibliothek, 2019. http://d-nb.info/1196089817/34.
Повний текст джерелаBaumgardner, Gaylon Lynn. "Characterization and implementation of ground tire rubber as post-consumer polymers for asphalt concrete." Thesis, Mississippi State University, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=3737185.
Повний текст джерелаAsphalt binder modification is a common method of improving Hot-mix Asphalt (HMA) performance by enhancing mix properties and reducing or delaying three general HMA distress types: deformation (rutting and shoving), cracking (from repeated loads and low temperatures) and general deterioration (raveling and stripping).
Since the early 1960’s, a common modified asphalt alternative has employed reclaimed rubber as an economical and environmental friendly method of recycling waste tires while improving asphalt physical and mechanical properties. Pavement network deterioration combined with increasing material costs makes polymer modification of asphalt binder desirable, with reclaimed rubber from waste tires being an attractive alternative which addresses performance, economics and environmental issues.
The primary objective of this dissertation is to demonstrate the importance of proper processing of all types of modified bituminous binders, whether they be virgin (e.g. styrene-butadiene-styrene (SBS) or styrene-butadiene rubber (SBR)), post-consumer polymers (e.g. ground tire rubber (GTR)) or a combination (GTR plus SBS). To achieve this four secondary objectives were identified: 1) characterize GTR using thermo-gravimetric analysis (TGA), 2) improve processing of GTR modified binders, 3) improve testing and specifications of GTR modified binders and 4) evaluate mixes containing GTR modified binders.
A simple efficient instrumental, TGA, method to analyze polymers in binary rubber compounds was developed to quantify the functional polymer content available in GTR. TGA analysis provides a better understanding of the general chemical characteristics of GTR used in modification of asphalt binders for production of asphalt paving mixtures.
Results are presented from efforts to optimize GTR modified binder formulations with respect to how GTR loading, GTR particle size, processing temperature and asphalt cement source affect modified binder properties and ability to meet performance graded binder specifications. These results are the basis to establish recommended processing parameters for formulation and preparation of GTR modified asphalt binders.
GTR modified binders were used in: dense graded asphalt (DGA), stone matrix asphalt (SMA) and open graded friction courses (OGFC) and compared to conventional asphalt cement and styrene-butadiene-styrene (SBS) modified asphalt binders. Mixture performance evaluation with respect to binder effectiveness as it relates to the three general HMA distress types.
Tran, Thao Anh Verfasser], and Heiko [Akademischer Betreuer] [Zimmermann. "Characterization of the ground state pluripotency in planarian / Thao Anh Tran ; Betreuer: Heiko Zimmermann." Saarbrücken : Saarländische Universitäts- und Landesbibliothek, 2019. http://nbn-resolving.de/urn:nbn:de:bsz:291--ds-283706.
Повний текст джерелаStressler, Bryan James. "Characterization of stress changes in subduction zones from space- and ground-based geodetic observations." Thesis, University of Iowa, 2017. https://ir.uiowa.edu/etd/5648.
Повний текст джерелаLiao, Songtao Zerva Aspasia. "Physical characterization of seismic ground motion spatial variation and conditional simulation for performance-based design /." Philadelphia, Pa. : Drexel University, 2006. http://dspace.library.drexel.edu/handle/1860/727.
Повний текст джерелаLeFrançois, Suzanne O'Neil 1980. "Ground penetrating radar characterization of wood piles and the water table in Back Bay, Boston." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/59653.
Повний текст джерелаIncludes bibliographical references (p. 103-105).
Ground penetrating radar (GPR) surveys are performed to determine the depth to the water table and the tops of wood piles beneath a residential structure at 122 Beacon Street in Back Bay, Boston. The area of Boston known as the Back Bay was once a tidal estuary of the Charles River. During the latter half of the 19th century, the Back Bay was filled to create room for the city's expanding population. Most of the structures built in the Back Bay during this period were residential buildings supported by untreated wood pile foundations. Submerged beneath the water table, untreated wood piles maintain their structural integrity indefinitely. However, recent groundwater fluctuations throughout the Back Bay have exposed the tops of some of the piles, causing the exposed areas to rot. Rotted wood piles weaken a structure's foundation and often result in differential settlement or cracking in walls or foundations. The current method of investigating suspected pile failure is to excavate a foundation and to physically inspect the piles, noting the elevation of the water table. In many cases, foundations may be stabilized by underpinning: replacing rotted wood piles with steel beams or concrete plugs often at great cost to the owner of the building. The research presented in this thesis investigates the usefulness of GPR in determining the proximity of the tops of wood piles relative to the water table. Two different types of radar surveys were used in an attempt to estimate the depth to the water table and the tops of the piles. Data collected from several radar surveys is interpreted and compared with ground truth derived from historical references, water level data from monitoring wells, observations from recent excavations, and the results of a resistivity survey. The results of this study indicate that modifications of this technique may allow more definite interpretation of wood pile foundations than traditional GPR surveys can provide in this type of environment.
by Suzanne O'Neil LeFrançois.
S.M.in Geosystems
Nikpour, Navid, and Navid Nikpour. "Production and characterization of natural fiber-polymer composites using ground tire rubber as impact modifier." Master's thesis, Université Laval, 2016. http://hdl.handle.net/20.500.11794/26699.
Повний текст джерелаCe travail porte sur la production et la caractérisation de matériaux composites hybrides basés sur un polymère thermoplastique (polyéthylène de haute densité, PEHD), une fibre naturelle (chanvre) et un caoutchouc recyclé provenant de pneus usés (GTR) comme modificateur d'impact. L'addition d'un agent de couplage (polyéthylène maléaté) est également étudiée. Les échantillons sont mélangés par extrusion à double-vis et fabriqués par un moulage en injection. À partir des échantillons obtenus, une caractérisation morphologique et mécanique complète est effectuée. Les résultats montrent que la bonne dispersion est obtenue en raison des bonnes conditions de mélanges sélectionnées et une bonne adhésion interfaciale entre toutes les phases est atteinte en raison de la présence d'anhydride maléique greffée au polyéthylène (MAPE). Enfin, pour des propriétés mécaniques choisies, des modèles de régression non-linéaire sont proposés pour prédire et contrôler les propriétés finales de ces composés par des comparaisons faites sur la base des propriétés de la matrice seule.
This work aims at the production and characterization of hybrid composites based on a thermoplastic polymer (high density polyethylene, HDPE), a natural fiber (hemp) as reinforcement and ground tire rubber (GTR) as an impact modifier. The addition of a coupling agent (maleated polyethylene) is also investigated. The samples are compounded by twin-screw extrusion and produced by injection molding. From the samples obtained, a complete morphological and mechanical characterization is performed. The results show that good dispersion is obtained due to the selected processing conditions and good interfacial adhesion between all the phases is achieved due to the presence of maleic anhydride grafted polyethylene (MAPE). Finally, for selected mechanical properties, nonlinear regression models are proposed to predict and control the final properties of these compounds and comparisons are made based on the neat matrix properties.
This work aims at the production and characterization of hybrid composites based on a thermoplastic polymer (high density polyethylene, HDPE), a natural fiber (hemp) as reinforcement and ground tire rubber (GTR) as an impact modifier. The addition of a coupling agent (maleated polyethylene) is also investigated. The samples are compounded by twin-screw extrusion and produced by injection molding. From the samples obtained, a complete morphological and mechanical characterization is performed. The results show that good dispersion is obtained due to the selected processing conditions and good interfacial adhesion between all the phases is achieved due to the presence of maleic anhydride grafted polyethylene (MAPE). Finally, for selected mechanical properties, nonlinear regression models are proposed to predict and control the final properties of these compounds and comparisons are made based on the neat matrix properties.
Scott, Michael L. "Automated Characterization of Bridge Deck Distress Using Pattern Recognition Analysis of Ground Penetrating Radar Data." Diss., Virginia Tech, 1999. http://hdl.handle.net/10919/28624.
Повний текст джерелаPh. D.
Kikuchi, Colin. "Spatially Telescoping Measurements for Characterization of Ground Water - Surface Water Interactions along Lucile Creek, Alaska." Thesis, The University of Arizona, 2011. http://hdl.handle.net/10150/202976.
Повний текст джерелаRobinson, J. Mike. "Chemical and Hydrostratigraphic Characterization of Ground Water and Surface Water Interactions in Cache Valley, Utah." DigitalCommons@USU, 1999. https://digitalcommons.usu.edu/etd/6717.
Повний текст джерелаStoltz, Årevik Emelie. "Spectroscopic analysis of exoplanet atmospheres : Ground-based high-resolution atmospheric characterization of hot Jupiters using near infrared spectroscopy." Thesis, Uppsala universitet, Institutionen för fysik och astronomi, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-260488.
Повний текст джерелаDen här rapporten studerar möjligheten att karaktärisera heta Jupiter atmosfärer genom att använda markbaserad högupplöst spektroskopi. ESO:s CRIRES infraröda spektrometer används som observeringsvektyg. Simulerade observationer beräknas för kända system där planeten genomgår en transit. Flera aspekter kring observationer (brus, våglängdstäckning, upplösning) uppskattas med CRIRES Exposure Time Calculator. En invers metod används för att rekonstruera exoplanetatmosfärers transmissionsspektrum och för att identifiera spektraldrag. Möjligheten att använda den här metoden för system utan transit utforskas. Tre exoplaneter antas vara möjliga att rekonstruera spektrat från.
Lungu, A. "Wavelet-based characterization and stochastic modelling of avelet-based characterization and stochastic modelling of pulse-like ground motions on the time-frequency plane." Thesis, City University London, 2014. http://openaccess.city.ac.uk/8341/.
Повний текст джерелаMartioli, Eder. "Characterization of exoplanet candidates from Hubble Space Telescope astrometry, ground-based radial velocity, and infrared interferometry." Instituto Nacional de Pesquisas Espaciais, 2010. http://urlib.net/sid.inpe.br/mtc-m19@80/2010/05.28.18.14.
Повний текст джерелаNeste trabalho são desenvolvidas técnicas observacionais e análise de dados para o estudo de candidatos a exoplanetas e companheiras de baixa massa detectados via velocidades radiais. Foram observados os sistemas HD 136118 e HD 33636. As observações incluem medidas de alta-cadência de velocidades radiais com o espectrógrafo de alta resolução do telescópio Hobby-Eberly e medidas astrométricas com o Sensor de Guiagem Fina 1r do telescópio espacial HST. Os dados de ambos experimentos foram analisados simultaneamente para a caracterização completa da órbita das companheiras. O trabalho resultou na determinação da massa verdadeira de HD 136118 b, M$_b$=63$^{+22}_{-13}$M$_J$. Essa massa é relativamente maior que a massa mínima determinada anteriormente via velocidades radiais, M$_b$ sin \textit {i} $\sim$ 12 M$_J$. Portanto, HD 136118 b é identificada como uma provável anã-marrom que reside no "deserto das anãs-marrons". Os resultados obtidos para o sistema HD 33636 são consistentes com os encontrados na literatura. Para HD 33636, ainda foram realizadas medidas interferométricas experimentais no infravermelho com o instrumento AMBER e três telescópios do Very Large Telescope Interferometer . Foram identificadas variações na visibilidade interferométrica que são consistentes com uma luz adicional com razão de fluxos de aproximadamente 30\%. Este resultado é inconsistente com os resultados dos dois primeiros experimentos, ou seja, um sistema binário constituído por uma estrela primária do tipo GO V e uma companheira anã do tipo M.
Syed, Riaz. "Development of Computational Tools for Characterization, Evaluation, and Modification of Strong Ground Motions within a Performance-Based Seismic Design Framework." Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/36435.
Повний текст джерелаMaster of Science
Cresci, David John. "On-wafer characterization of ground vias in multilayer FR-4 printed circuit boards at RF/microwave frequencies." Thesis, Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/15806.
Повний текст джерелаGellenbeck, Dorinda Jeanne 1967. "Chemical and isotopic characterization of ground water from the western part of the Salt River Valley, Arizona." Thesis, The University of Arizona, 1992. http://hdl.handle.net/10150/278268.
Повний текст джерелаChen, Guang. "Modeling and Characterization of Plane Pair Structures in High-Speed Power Delivery Systems." Diss., The University of Arizona, 2006. http://hdl.handle.net/10150/195454.
Повний текст джерелаLindberg, Marie. "Cloning, overexpression and biophysical characterization of grd/grl/wrt domains from Caenorhabditis elegans in Escherichia coli." Thesis, Södertörns högskola, Institutionen för livsvetenskaper, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:sh:diva-1996.
Повний текст джерелаEbell, Kerstin [Verfasser]. "Characterization of clouds and their radiative effects using ground-based instrumentation at a low-mountain site / Kerstin Ebell." Köln : Universitäts- und Stadtbibliothek Köln, 2010. http://d-nb.info/1013831918/34.
Повний текст джерелаKargioglu, Bahadir. "Turkey-adjusted Next Generation Attenuation Models." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614660/index.pdf.
Повний текст джерелаLinde, Niklas. "Characterization of Hydrogeological Media Using Electromagnetic Geophysics." Doctoral thesis, Uppsala universitet, Geofysik, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-5912.
Повний текст джерелаYunatci, Ali Anil. "Gis Based Seismic Hazard Mapping Of Turkey." Phd thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612688/index.pdf.
Повний текст джерелаsuch as source characterization and ground motion intensity prediction. This study contributes to major components of the seismic hazard workflow including magnitude &ndash
rupture dimension scaling relationships, and ground motion intensity prediction. The study includes revised independent models for predicting rupture dimensions in shallow crustal zones, accompanied by proposals for geometrically compatible rupture area-length-width models which satisfy the rectangular rupture geometry assumption. Second main part of the study focuses on developing a new ground motion prediction model using data from Turkish strong ground motion database. The series of efforts include, i) compilation and processing of a strong motion dataset, ii) quantifying parameter uncertainties of predictive parameters such as magnitude and source to site distance
and predicted accelerations due to uncertainty in site conditions and response, as well as uncertainty due to random orientation of the sensor, iii) developing a ground response model as a continuous function of peak ground acceleration and shear wave velocity, and finally, iv) removing bias in predictions due to uneven sampling of the dataset. Auxiliary components of the study include a systematic approach to source characterization problem, with products ranging from description of systematically idealized and documented seismogenic faults in Anatolia, to delineation, magnitude-recurrence parameterization, and selection of maximum magnitude earthquakes. Last stage of the study covers the development of a custom computer code for probabilistic seismic hazard assessment which meets the demands of modern state of practice.
Hemmer, Friederike. "Characterization of cirrus clouds from ground-based remote sensing using the synergy of lidar and multi-spectral infrared radiometry." Thesis, Lille 1, 2018. http://www.theses.fr/2018LIL1R050/document.
Повний текст джерелаThere is a broad consensus that cirrus clouds strongly influence the climate of the Earth. However, their net radiative effect is still poorly quantified nowadays due to an insufficient knowledge of their microphysical properties. This thesis aims to improve our understanding of the complex microphysics of this cloud type mainly composed of irregularly shaped ice crystals and thereby improve estimates of the ice water content (IWC). For this purpose, we developed an algorithm to retrieve vertical profiles of the IWC of cirrus clouds. The methodology combines the measurements of a ground-based lidar and a thermal infrared (TIR) radiometer in a common optimal estimation framework. It follows three steps: (1) An algorithm to retrieve the vertically integrated amount of ice (ice water path, IWP) from the passive TIR measurements is established. (2) The information about the vertical distribution of the IWC inside the cloud is obtained from the active lidar measurements. These retrievals strongly depend on the backscatter-to-extinction ratio of the ice crystals which is obtained from a bulk ice microphysical model. The scattering phase function of this model used to define the backscatter-to-extinction ratio assumes a flat ending without backscattering peak. We show that this assumption is unrealistic since it results in the retrieval of IWC profiles which are inconsistent with the TIR measurements. (3) Consequently, both types of measurements are combined in a synergistic algorithm allowing to estimate together with the IWC profiles a correction factor for the phase function in backscattering direction. Finally, the retrieval results and associated hypotheses are discussed
Kneifel, Stefan [Verfasser], Susanne [Akademischer Betreuer] Crewell, Clemens [Akademischer Betreuer] Simmer, and Anthony [Akademischer Betreuer] Illingworth. "Characterization of snowfall using ground-based passive and active remote sensors. / Stefan Kneifel. Gutachter: Susanne Crewell ; Clemens Simmer ; Anthony Illingworth." Köln : Universitäts- und Stadtbibliothek Köln, 2011. http://d-nb.info/1038170079/34.
Повний текст джерелаIbrahim, Liliane. "Caracterização física, química, mineralógica e morfológica de uma sequência de solos em Lins/SP." Universidade de São Paulo, 2002. http://www.teses.usp.br/teses/disponiveis/11/11140/tde-07082002-140701/.
Повний текст джерелаThe purpose of this study is to characterize a soil system, identifying the properties which can elucidate its dynamics and to define criterions for the ability of these soils to constitute an effluent disposal land. The experimental area is located nearby the Sewage Treatment Station (STS), in Lins (SP) and the effluent is proceeded for secundary treatment. In this area, is being applied the technique of fertirrigation. The soils are situated on a downslope and were characterized beside morphological, particle size, chemicals, mineralogicals and micromorphologicals analyses on samples collected in six profiles along two toposequences, across the axis of maximun gradient on downslope. These soils are expanded from sandstones of Adamantina Formation (Bauru Group) and compose an Oxisol-Ultisol system. The Bw-Bt transition accurs laterally, from the upper to the lowest part of downslope. It was recognized four pedogenetic phasis. Both first, argilluviation and compressed layer, explain the formation of argillic horizons and were superimposed from latossolization and hydromorphism, both last actuating on the actual dynamics of these soils. Micromorphological analysis showed that these soils are too porous, characterized for packing of skeletic grains and between granular aggregates. The permeability is increased by the activity of mesofaunal. These soils are dystrophics, have high aluminium saturation and are composed for kaolinite and iron oxides. This system is fragile, thus, the deposal of any kind of residues on these soils, needs the constant warning of all of their properties, so to the maintenance and also the recover of the quality of this pedologic cover.
Basart, Alpuente Sara. "Desert dust characterization in Northern Africa, Middle East and Europe through regional dust modelling, and satellite-borne and ground-based observations." Doctoral thesis, Universitat Politècnica de Catalunya, 2012. http://hdl.handle.net/10803/130902.
Повний текст джерелаUna gran quantitat de pols que és mobilitzada en les regions àrides del planeta, és injectada a l’atmosfera sota condicions meteorològiques favorables. A partir de mesures terrestres i de satèl·lit, a més a més d’estimacions obtingudes a partir de models, es calcula que en tot el planeta s’emeten entre centenars i milers de megatones de pols per any. L’impacte que té la pols mineral en el clima, els ecosistemes i la qualitat de l’aire, i per tant, en la salut humana i les activitats econòmiques, representa una qüestió social i científica de gran rellevància. La font més important d’emissió de pols mineral a nivell global és la regió del Sàhara. Els principals objectius de la present tesi doctoral són el d'avaluar el comportament i el de millorar les capacitats de predicció d'un model regional de pols així com el de caracteritzar el contingut de pols desèrtica en el nord d'Àfrica, Orient Mitjà i Europa. En aquest marc de treball, el model regional de pols BSC-DREAM8b i els fotòmetres de la xarxa internacional AERONET són les principals eines que seràn utilitzades en el transcurs de la present investigació. La comparació entre valors observats i simulats no pot ser adequadament entesa si les mesures no estan separades en els seus components fonamentals. Així, es va dur a terme una caracterització d'aerosols per al nord d'Àfrica, Europa i Orient Mitjà. Aquesta caracterització està basada en sèries d'espessor òptic d'aerosols (AOD; Aerosol Optical Depth en anglès) dels fotòmetres de la xarxa AERONET. L'anàlisi d'aquesta base de dades es va realitzar aplicant el mètode de Gobbi i co-autors. Aquest mètode gràfic permet deduir diferents propietats òptiques i físiques dels aerosols (com són el radi efectiu del mode fi i la contribució de les fraccions fines i gruixudes a l’AOD), a més a més, de diferenciar entre diferents processos que fan augmentar el valor de l’AOD com són la humidificació i/o coagulació de les fraccions fines o l'increment de partícules més gruixudes a causa de la presència de núvols. Els resultats van mostrar que la pols mineral és l'aerosol més important al nord d'Àfrica i Aràbia. En estacions properes a zones urbanes i industrials de regions continentals i de l'est d'Europa i Orient Mitjà es van observar partícules fines associades a fonts antropogèniques. També es van detectar importants contribucions en les fraccions fines degudes a la crema de biomassa a la zona del sub-Sahel durant l'hivern. El transport de pols desèrtica cap al sud d'Europa està associat a determinats patrons meteorològics estacionals. Com a resultat, en zones del sud d'Europa, la pols desèrtica es va observar entre primavera i tardor, i la seva contribució (que va arribar superar el 40%) decreixia cap a latituds més al nord. En aquest darrer cas, la pols desèrtica acostumava a trobar-se barrejada amb altres tipus d'aerosols d'origen antropogènic Els models de pols són essencials per complementar les observacions, entendre els processos associats al cicle de la pols i predir el seu impacte en les concentracions en superfície del material particulat (PM; Particulate Matter en anglès). En particular, els models regionals són adequats per a la simulació d'episodis individuals d’instrusió de pols desèrtica. Actualment, el model de pols BSC-DREAM8b és mantingut i desenvolupat en el Barcelona Supercomputing Center – Centre Nacional de Supercomputació (BSC-CNS). En els darrers anys, el model ha proporcionat prediccions diàries de concentracions de pols desèrtica en dos dominis: Nord d'Àfrica-Europa – Europa - Orient Mitjà i Àsia. A pesar que el BSCDREAM8b ha arribat a aconseguir una qualitat de pronòstic operacional capaç de reproduir els episodis d'intrusió saharians més importants que afecten al Mediterrani i Europa, és necessari avaluar el seu comportament en regions font de pols. En aquest context, el model BSC-DREAM8b i la seva versió original, DREAM, així com diferents versions experimentals, van ser avaluats per a un cicle estacional complet utilitzant les dades de la xarxa AERONET i promitjos estacionals de productes d'aerosols de diferents satèl·lits pel Nord d'Àfrica, Orient Mitjà i Europa. Els resultats de l'avaluació del model van mostrar que tant el BSC-DREAM8b com el DREAM subestimaven les concentracions de pols a la regió del Sahel durant l'estació hivernal del Harmattan. Per contra, importants sobreestimacions en l'oest del Mediterrani es van detectar coincidint amb episodis plujosos a la primavera. L’inclusió d'un nou esquema de deposició seca a més de l'actualització de la relació de rentat en l'esquema de deposició humida del model, van aconseguir millores en el transport a llarga distància, en particular sobre el Mediterrani malgrat que les subestimacions a la zona del Sahel van continuar sent persistents a l'hivern. La introducció d'una màscara de fonts preferents basada en la topografia del terreny en l'esquema d'emissió va millorar la localització de les principals regions font en el Nord d'Àfrica. Com a conseqüència, es van observar millores en el transport de llarga distància cap a Europa i les regions Atlàntiques. La inclusió d'un nou esquema d'emissió (que inclou parametritzacions físiques més complexes) a més d'una nova base de dades de textura de sòls va aconseguir bons resultats en regions font així com en regions afectades pel transport de pols a llarga distància. En aquest cas, l’introducció d'una màscara de fonts preferents en l'esquema d'emissió no va mostrar significants millores en comparació dels valors observats. A Europa, es poden trobar diferents tipus d'aerosols associats a diferents fonts d'emissió (tant naturals com antropogèniques) que s’han de tenir en compte quan s'analitzen les contribucions dels aerosols sobre el continent europeu. El transport de pols sahariana cap a sud d'Europa va ser avaluat i analitzat mitjançant una simulació del sistema de modelització de qualitat de l'aire CALIOPE. El sistema de modelització CALIOPE integra un conjunt de models dels quals el BSC-DREAM8b i el model fotoquímic CMAQ proporcionen les estimacions d'aerosols. Per a l'avaluació de CALIOPE es van utilitzar diverses fonts de dades de xarxes en superfície (com la xarxa europea de qualitat de l'aire EMEP/CREATE i la xarxa de AERONET) i mitjanes estacionals de productes d'aerosols de satèl.lits. L'avaluació va mostrar que malgrat subestimar les concentracions d'aerosols, CALIOPE va ser capaç de capturar les variabilitats diàries observades en les estacions en superfície així com reproduir els patrons estacionals observats en els productes de satèl·lit. L'avaluació dels aerosols per components va mostrar que les espècies químiques amb major subestimació pel que fa a les observacions estaven associades a les fraccions fines de carbó elemental i orgànic així com els aerosols secundaris inorgànics (nitrats, sulfats i amoni). Com a resultat, es va aplicar un senzill mètode de correcció de l’error als resultats de la simulació basat en les observacions de la composició química per tal de mostrar una estimació espaial i temporal de la distribució dels diferents aerosols presents a Europa. L'anàlisi de d’aquesta simulació va mostrar que les màximes concentracions d'aerosols es localitzen a les zones poblades i industrialitzades del Benelux i de la Vall del Po. Aquests màxims estan associats a les fraccions fines compostes d'aerosols secundaris inorgànics (observant-se contribucions de més del 80%). Màxims secundaris es van detectar a l'est i sud d'Europa. Les altes concentracions en el sud d'Europa s’associaven al transport de pols sahariana que contribuïa en més d'un 40% al total de la massa en columna. Prop de la superfície, les màximes concentracions estacionals associades al transport de pols (> 30 microg/m3) van ser observades entre primavera i estiu. A més a més, els resultats de la simulació anual d'aerosols per Europa va mostrar que el transport de pols sahariana és el principal responsable de la superació del límit diari de PM10 establert per la Unió Europea (50 microg/m3) en extenses àrees al sud dels 45ºN.
Liu, Yanyan. "NONLINEAR DYNAMICS CHARACTERIZATION OF BIDIRECTIONAL SEISMIC RESPONSE OF STEEL BRIDGE PIERS." Kyoto University, 2018. http://hdl.handle.net/2433/232023.
Повний текст джерелаHE, XINHAO. "Dynamic Characterization of Aseismic Bearings for Girder Bridges: Bi-directional Seismic Performance Assessment and Design Parameter Exploration." Kyoto University, 2020. http://hdl.handle.net/2433/259025.
Повний текст джерелаMeyers, Jason. "Tunable diode laser absorption spectroscopy characterization of impulse hypervelocity CO2 flows." Doctoral thesis, Universite Libre de Bruxelles, 2009. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/210279.
Повний текст джерелаsensor could significantly aid in improving the knowledge of freestream static values thereby improving the models used in data rebuilding and numerical simulation. The design of such a sensor also expands the spectroscopic capabilities of the Von Karman Institute.
The absorption sensor is designed around the single P12 (00001)-(30013) rovibrational transition near 1.6µm (6218.09cm-1 specifically) which yields relatively weak direct absorption levels at about 3.5% per meter for typical Longshot freestream conditions. However, when handled carefully, adequate signal-to-noise can be acquired to exploit significant flow information. By being able to operate in this range, total sensor cost can be easily an a factor of two or more cheaper than sensors designed for the deeper infrared. All sensor elements were mounted to a compact portable optics bench utilizing single-mode optical fibers to allow for quick installation at different facilities by eliminating tedious optical realigning. Scans at 600Hz were performed over 20ms of the 40ms test time to extract core static temperature, pressure and velocity.
These results are compared with the current state of the Longshot data rebuild method. The non-uniform flow properties of the shear layer and test cabin rested gas accumulation was of an initial concern. The temperature and density gradients along with significant radial velocity components could result in DLAS temperature, pressure and velocity that are significantly different than that of the target freestream inviscid core values. Fortunately, with the proper selection of the P12 rotational number, this effect could be more or less ignored as the higher temperature and lower density gas of this region is relatively transparent.
Ultimately, acquired temperature and density were moderately accurate when compared to Longshot rebuilt results owing primarily to the baseline extraction which poses issues for such low absorption signals. However, the extracted velocity data are quite accurate. This is a definite puls for the sensor as the freestream enthalpy of cold hypersonic facilities is dictated primarily by the kinetic energy contribution. Being able to compare velocity gives insight to the level of vibration non-equilibrium in the flow. The velocity of the DLAS and the Longshot rebuild are quite close. This adds more weight to the argument that vibrational excitation is very low (if present at all) in the free stream and that the van de derWaals equation of state usage and constant specific heat assumption might be an adequate model for the data rebuild after all.
Doctorat en Sciences de l'ingénieur
info:eu-repo/semantics/nonPublished
Phipps, Graham Charles. "Hydrogeochemical and isotopic characterization of ground waters in the Myra-Price Hillsides and Thelwood Valley, Myra Falls mining camp, Vancouver Island, British Columbia, Canada." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0019/NQ45190.pdf.
Повний текст джерелаIoannidis, Panagiotis [Verfasser], and Jürgen H. M. M. [Akademischer Betreuer] Schmitt. "Characterization of exoplanets and their host-stars with high precision photometry from ground-based and satellite observations / Panagiotis Ioannidis. Betreuer: Jürgen H. M. M. Schmitt." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2016. http://d-nb.info/1113184353/34.
Повний текст джерелаIoannidis, Panagiotis Verfasser], and Jürgen [Akademischer Betreuer] [Schmitt. "Characterization of exoplanets and their host-stars with high precision photometry from ground-based and satellite observations / Panagiotis Ioannidis. Betreuer: Jürgen H. M. M. Schmitt." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2016. http://d-nb.info/1113184353/34.
Повний текст джерелаYeboah-Forson, Albert. "Hydrogeophysical Characterization of Anisotropy in the Biscayne Aquifer Using Geophysical Methods." FIU Digital Commons, 2013. http://digitalcommons.fiu.edu/etd/919.
Повний текст джерелаChoi, Hyung Jin. "Characterization of properties and spatiotemporal fields of mineral aerosol and its radiative impact using CALIPSO data in conjunction with A-Train satellite and ground-based observations and modeling." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/41105.
Повний текст джерелаAyala, Cabrera David. "Characterization of components of water supply systems from GPR images and tools of intelligent data analysis." Doctoral thesis, Universitat Politècnica de València, 2015. http://hdl.handle.net/10251/59235.
Повний текст джерела[ES] Con el paso del tiempo, y debido a múltiples actividades operacionales y de mantenimiento, las redes de los sistemas de abastecimiento de agua (SAAs) sufren intervenciones, modificaciones o incluso, son clausuradas, sin que, en muchos casos, estas actividades sean correctamente registradas. El conocimiento de los trazados y características (estado y edad, entre otros) de las tuberías en los SAAs es obviamente necesario para una gestión eficiente y dinámica de tales sistemas. A esta problemática se suma la detección y el control de las fugas de agua. El acceso a información fiable sobre las fugas es una tarea compleja. En muchos casos, las fugas son detectadas cuando los daños en la red son ya considerables, lo que trae consigo altos costes sociales y económicos. En este sentido, los métodos no destructivos (por ejemplo, ground penetrating radar - GPR), pueden ser una respuesta a estas problemáticas, ya que permiten, como se pone de manifiesto en esta tesis, localizar los trazados de las tuberías, identificar características de los componentes y detectar las fugas de agua cuando aún no son significativas. La selección del GPR, en este trabajo se justifica por sus características como técnica no destructiva, que permite estudiar tanto objetos metálicos como no metálicos. Aunque la captura de información con GPR suele ser exitosa, la configuración de la captura, el gran volumen de información, y el uso y la interpretación de la información requieren de alto nivel de habilidad y experiencia por parte del personal. Esta tesis doctoral se plantea como un avance hacia el desarrollo de herramientas que permitan responder a la problemática del desconocimiento de los activos enterrados de los SAAs. El objetivo principal de este trabajo doctoral es, pues, generar herramientas y evaluar la viabilidad de su aplicación en la caracterización de componentes de un SAA, a partir de imágenes GPR. En este trabajo hemos realizado ensayos de laboratorio específicamente diseñados para plantear, elaborar y evaluar metodologías para la caracterización de los componentes enterrados de los SAAs. Adicionalmente, hemos realizado ensayos de campo, que han permitido determinar la viabilidad de aplicación de tales metodologías bajo condiciones no controladas. Las metodologías elaboradas están basadas en técnicas de análisis inteligentes de datos. El principio básico de este trabajo ha consistido en el tratamiento adecuado de los datos obtenidos mediante el GPR, a fin de buscar información de utilidad para los SAAs respecto a sus componentes, con especial énfasis en las tuberías. Tras la realización de múltiples actividades, se puede concluir que es viable obtener más información de las imágenes de GPR que la que actualmente se obtiene con la típica identificación de hipérbolas. Esta información, además, puede ser observada directamente, de manera más sencilla, mediante las metodologías planteadas en este trabajo doctoral. Con estas metodologías se ha probado que también es viable la identificación de patrones (especialmente el pre-procesado con el algoritmo Agent race) que proporcionan aproximación bastante acertada de la localización de las fugas de agua en los SAAs. También, en el caso de las tuberías, se puede obtener otro tipo de características tales como el diámetro y el material. Como resultado de esta tesis se han desarrollado una serie de herramientas que permiten visualizar, identificar y localizar componentes de los SAAs a partir de imágenes de GPR. El resultado más interesante es que los resultados obtenidos son sintetizados y reducidos de manera que preservan las características de los diferentes componentes registrados en las imágenes de GPR. El objetivo último es que las herramientas desarrolladas faciliten la toma de decisiones en la gestión técnica de los SAAs y que tales herramientas puedan ser operadas incluso por personal con una experiencia limitada en el manejo
[CAT] Amb el temps, a causa de les múltiples activitats d'operació i manteniment, les xarxes de sistemes d'abastament d'aigua (SAAs) se sotmeten a intervencions, modificacions o fins i tot estan tancades. En molts casos, aquestes activitats no estan degudament registrats. El coneixement dels camins i característiques (estat i edat, etc.) de les canonades d'aigua i sanejament fa evident la necessitat d'una gestió eficient i dinàmica d'aquests sistemes. Aquest problema es veu augmentat en gran mesura tenint en compte la detecció i control de fuites. L'accés a informació fiable sobre les fuites és una tasca complexa. En molts casos, les fugues es detecten quan el dany ja és considerable, el que porta costos socials i econòmics. En aquest sentit, els mètodes no destructius (per exemple, ground penetrating radar - GPR) poden ser una resposta constructiva a aquests problemes, ja que permeten, com s'evidencia en aquesta tesi, per determinar rutes de canonades, identificar les característiques dels components, i detectar les fuites d'aigua quan encara no són significatives. La selecció del GPR en aquest treball es justifica per les seves característiques com a tècnica no destructiva que permet estudiar tant objectes metàl·lics i no metàl·lics. Tot i que la captura d'informació amb GPR sol ser reeixida, aspectes com ara la configuració de captura, el gran volum d'informació que es genera, i l'ús i la interpretació d'aquesta informació requereix alt nivell d'habilitat i experiència. Aquesta tesi pot ser vista com un pas endavant cap al desenvolupament d'eines capaces d'abordar el problema de la manca de coneixement sobre els actius d'aigua i sanejament enterrat. L'objectiu principal d'aquest treball doctoral és, doncs, generar eines i avaluar la seva factibilitat d'aplicació a la caracterització dels components de los SAAs, a partir d'imatges GPR. En aquest treball s'han dut a terme proves de laboratori específicament dissenyats per proposar, desenvolupar i avaluar mètodes per a la caracterització dels components d'aigua i sanejament soterrat. A més, hem dut a terme proves de camp, que ens han permès determinar la viabilitat de la implementació d'aquestes metodologies en condicions no controlades. Les metodologies desenvolupades es basen en tècniques d'anàlisi intel·ligent de dades. El principi bàsic d'aquest treball ha consistit en el tractament de dades obtingudes a través del GPR per buscar informació útil sobre els components d'SAA, amb especial èmfasi en la canonades. Després de realitzar nombroses activitats, es pot concloure que, amb l'ús d'imatges de GPR, és factible obtenir més informació que la identificació típica d'hipèrboles realitzat actualment. A més, aquesta informació pot ser observada directament, per exemple, més simplement, utilitzant les metodologies proposades en aquest treball doctoral. Aquestes metodologies també demostren que és factible per identificar patrons (especialment el pre-processat amb l'algoritme Agent race) que proporcionen bastant bona aproximació de la localització de fuites en SAAs. També, en el cas de tubs, es pot obtenir altres característiques com ara el diàmetre i el material. Els principals resultats d'aquesta tesi consisteixen en una sèrie d'eines que hem desenvolupat per localitzar, identificar i visualitzar els components dels SAAS a partir d'imatges GPR. El resultat més interessant és que els resultats obtinguts són sintetitzats i reduïts de manera que preserven les característiques dels diferents components registrats en les imatges de GPR. L'objectiu final és que les eines desenvolupades faciliten la presa de decisions en la gestió tècnica de SAA, i que tals eines poden fins i tot ser operades per personal amb poca experiència en el maneig de metodologies no destructives, específicament GPR.
Ayala Cabrera, D. (2015). Characterization of components of water supply systems from GPR images and tools of intelligent data analysis [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/59235
TESIS
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