Дисертації з теми "Dynamics in media"
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Durling, Nicola Emma. "Reaction dynamics in supercritical media." Thesis, University of Leicester, 2003. http://hdl.handle.net/2381/30077.
Повний текст джерелаMolale, Dimpho Millicent. "A computational evaluation of flow through porous media." Thesis, Link to the online version, 2007. http://hdl.handle.net/10019/686.
Повний текст джерелаIotov, Mihail S. Goddard William A. "Diffusion in amorphous media." Diss., Pasadena, Calif. : California Institute of Technology, 1998.
Знайти повний текст джерелаAdvisor names found in the Acknowledgments pages of the thesis. Title from home page. Viewed 02/01/2010. Includes bibliographical references.
Reitberger, Wolfgang Heinrich. "Affective Dynamics in Responsive Media Spaces." Thesis, Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/4975.
Повний текст джерелаPalapanidis, Konstantinos. "Relativistic fluid dynamics and electromagnetic media." Thesis, University of Southampton, 2018. https://eprints.soton.ac.uk/427364/.
Повний текст джерелаXu, Jinshan. "Dynamics and synchronization in biological excitable media." Phd thesis, Ecole normale supérieure de lyon - ENS LYON, 2012. http://tel.archives-ouvertes.fr/tel-00776373.
Повний текст джерелаBorek, Bartlomiej. "Dynamics of heterogeneous excitable media with pacemakers." Thesis, McGill University, 2012. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=107795.
Повний текст джерелаLe coeur est un tissu hétérogène excitable qui contient des générateurs de rythme. Pour comprendre les règles fondamentales qui dirigent son comportement, il est utile d'étudier l'interaction entre la structure et la dynamique des modèles expérimentaux et mathématiques simplifiés. Dans cette thèse, j'utilise des modèles d'équations de FitzHugh-Nagumo. Ces modèles sont motivés par l'expérimentation avec des tissus cardiaques modifiés pour étudier comment les propriétés des conceptions influencent la dynamique d'ondes. Tout d'abord, une relation fonctionelle entre la densité des hétérogénéités distribuées au hasard et la vitesse de conduction est proposée dans un modèle numérique de deux dimensions de média hétérogènes excitables. Les transitions à l'onde rupturée sont différentes pour deux types de substrats hétérogènes. Les effets des régions automatiques sont alors considérés avec une étude théorique des transitions dans les ondes unidimensionelles des générateurs de rythme réinitialisés par une seule impulsion d'une distance. Des solutions d'ondes réfléchies se trouvent près de la discontinuité apparente de la courbe de transition de phase du système et deviennent des trajectoires plus complexes pour une discrétisation spatiale plus grossière du modèle. Enfin, les modèles d'ondes résultant de l'interaction de deux générateurs de rythme dans des médias hétérogènes excitables sont étudiés. Une nouvelle culture de tissu cardiaque de poussin est développée pour présenter la dynamique dominante déterminée par un générateur de rythme. Ce rythme stable subit des transitions à des modèles d'ondes réentrants plus complexes suivant l'induction de nouveaux générateurs de rythme, par l'application du bloqueur des canaux potassiques, E-4031. La dynamique est reproduite par le modèle FitzHugh-Nagumo, prévoyant l'effet de la taille du générateur de rythme et la densité de l'hétérogèneité sur la transition de l'onde rupturée et à la réentrée. Ces résultants contribuent à notre compréhension des mécanismes de média hétérogènes excitables avec des générateurs de rythme, dont les coeurs sains et malades.
Dambal, Ajey Krishnamurty. "Polymer dynamics in confined and concentrated media /." May be available electronically:, 2009. http://proquest.umi.com/login?COPT=REJTPTU1MTUmSU5UPTAmVkVSPTI=&clientId=12498.
Повний текст джерелаSeebaluck, Ajay. "How social media affects the dynamics of protest." Thesis, Monterey, California: Naval Postgraduate School, 2014. http://hdl.handle.net/10945/44666.
Повний текст джерелаDigital technologies have created a new environment in the virtual world, which may either reinforce or undermine state authority. The wave of protests that erupted in the North African region during the last decade has increased the interest of scholars in investigating the catalysts for these uprisings. While there are conflicting views about the role of new technology in social protest, the Arab Spring has highlighted the role played by social media as a key tool in garner mass mobilization. However, a number of other factors could have been involved in the Arab uprisings. Thus, focusing only on one particular cause may lead to incorrect conclusions. Using cross-sectional-time series data, and multivariate regression, this thesis seeks to demonstrate that the Internet has a direct relationship with the onset of civil protests in Africa when certain economic conditions exist.
Shokri-Kuehni, Salomé Michelle Sophie. "Dynamics of saline water evaporation from porous media." Thesis, University of Manchester, 2018. https://www.research.manchester.ac.uk/portal/en/theses/dynamics-of-saline-water-evaporation-from-porous-media(df48eec0-7bf4-46f5-96ef-d7f3f9419ec2).html.
Повний текст джерелаMunjiza, Ante. "Discrete elements in transient dynamics of fractured media." Thesis, Swansea University, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.601150.
Повний текст джерелаSu, Chunmeizi. "Changing dynamics of digital entertainment media in China." Thesis, Queensland University of Technology, 2019. https://eprints.qut.edu.au/130744/1/Chunmeizi_Su_Thesis.pdf.
Повний текст джерелаWikström, Patrik. "Reluctantly Virtual : Modelling Copyright Industry Dynamics." Doctoral thesis, Karlstad University, Faculty of Economic Sciences, Communication and IT, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-478.
Повний текст джерелаDuring the evolution of the music industry, developments in the media environment have required music firms to adapt in order to survive. Changes in broadcast radio programming during the 1950s; the Compact Cassette during the 1970s; and the deregulation of media ownership during the 1990s are all examples of changes which have heavily affected the music industry. This study explores similar contemporary dynamics, examines how decision makers in the music industry perceive and make sense of the developments, and reveals how they revise their business strategies, based on their mental models of the media environment.
A qualitative system dynamics model is developed in order to support the reasoning brought forward by the study. The model is empirically grounded, but is also based on previous music industry research and a theoretical platform constituted by concepts from evolutionary economics and sociology of culture. The empirical data primarily consist of 36 personal interviews with decision makers in the American, British and Swedish music industrial ecosystems. The study argues that the model which is proposed, more effectively explains contemporary music industry dynamics than music industry models presented by previous research initiatives.
Supported by the model, the study is able to show how “new” media outlets make old music business models obsolete and challenge the industry’s traditional power structures. It is no longer possible to expose music at one outlet (usually broadcast radio) in the hope that it will lead to sales of the same music at another (e.g. a compact disc).
The study shows that many music industry decision makers still have not embraced the new logic, and have not yet challenged their traditional mental models of the media environment. Rather, they remain focused on preserving the pivotal role held by the CD and other physical distribution technologies.
Further, the study shows that while many music firms remain attached to the old models, other firms, primarily music publishers, have accepted the transformation, and have reluctantly recognised the realities of a virtualised environment.
Rodriguez, Donaire Silvia. "Social media, interactive tools that change business model dynamics." Doctoral thesis, Universitat Politècnica de Catalunya, 2012. http://hdl.handle.net/10803/83599.
Повний текст джерелаSoneson, Joshua Eric. "Optical Pulse Dynamics in Nonlinear and Resonant Nanocomposite Media." Diss., Tucson, Arizona : University of Arizona, 2005. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu%5Fetd%5F1274%5F1%5Fm.pdf&type=application/pdf.
Повний текст джерелаPage, Adam Freddie. "Surface plasmon emission and dynamics in active planar media." Thesis, Imperial College London, 2015. http://hdl.handle.net/10044/1/30760.
Повний текст джерелаIrwin, Matthew L. "The Dynamics of Media Use, Attention, and Behavioral Control." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1492700316011036.
Повний текст джерелаLittle, Sylvia Bandy. "Multiphase flow through porous media." Thesis, Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/11779.
Повний текст джерелаSailer, Franz-Xaver. "Controlling excitable media with noise." Doctoral thesis, [S.l.] : [s.n.], 2006. http://deposit.ddb.de/cgi-bin/dokserv?idn=980114284.
Повний текст джерелаTartakovsky, Daniel. "Prediction of transient flow in random porous media by conditional moments." Diss., The University of Arizona, 1996. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu_e9791_1996_263_sip1_w.pdf&type=application/pdf.
Повний текст джерелаRussian, Anna. "Anomalous dynamics of Darcy flow and diffusion through heterogeneous media." Doctoral thesis, Universitat Politècnica de Catalunya, 2013. http://hdl.handle.net/10803/116499.
Повний текст джерелаVallabh, Rahul. "Modeling Tortuosity in Fibrous Porous Media using Computational Fluid Dynamics." NCSU, 2009. http://www.lib.ncsu.edu/theses/available/etd-08062009-153236/.
Повний текст джерелаParra, Martinez Juan Pablo. "On multilayered system dynamics and waves in anisotropic poroelastic media." Doctoral thesis, KTH, VinnExcellence Center for ECO2 Vehicle design, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-195801.
Повний текст джерелаQC 20161110
Stevar, M. S. P. "Dissolution dynamics of liquid/liquid binary mixtures in porous media." Thesis, University of Southampton, 2013. https://eprints.soton.ac.uk/349974/.
Повний текст джерелаHohenberger, Matthias. "The dynamics of strong laser-driven shocks in cluster media." Thesis, Imperial College London, 2009. http://hdl.handle.net/10044/1/5642.
Повний текст джерелаYeates, Christopher. "Multi-Scale Study of Foam Flow Dynamics in Porous Media." Thesis, Sorbonne université, 2019. http://www.theses.fr/2019SORUS023/document.
Повний текст джерелаIn this work, we use of a high-complexity micromodel of fixed structure on which we perform a series of experiments with varying injection rates, foam qualities, inlet bubble size distributions and injection methods. We perform individual bubble tracking and associate flow properties with bubble size properties and structural characteristics of the medium. We propose new tools describing the local and global flow in different ways. We establish specific behaviors for different bubble sizes, demonstrating that trapped foams are more likely to have smaller than average bubble sizes, while flowing bubbles also tend to segregate in different flow paths according to bubble size. Larger bubbles tend to flow in high-velocity preferential paths that are generally more aligned with pressure gradient, but smaller bubbles tend to access in supplement transversal paths linking the different preferential paths. Furthermore, for our data we establish the pre-eminence of the trapped foam fraction over bubble density within the microscopic explanation of apparent viscosity, although both contribute to some degree. We structurally characterize consistently trapped zones as areas with either low pore coordination, low entrance throat size, unfavorable throat orientation or a combination thereof. High-flow zones however cannot be characterized in terms of local structural parameters and necessitate integration of complete path information from the entire model. In this regard, in order to capture the high-flow zones, we develop a path-proposing model that makes use of a graph representation of the model, from an initial decomposition into pores and throats, that uses only local throat size and throat orientation relative to pressure gradient to characterize paths
Soroka, Stuart Neil. "Agenda-setting dynamics in Canada." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://hdl.handle.net/2429/11201.
Повний текст джерелаWhelan, Michael P. "Dissolution of non-aqueous phase liquid pools in saturated porous media." Thesis, Georgia Institute of Technology, 1992. http://hdl.handle.net/1853/20140.
Повний текст джерелаMomken, Bahareh. "Fluid flow and deformation in composite porous media /." Full text (PDF) from UMI/Dissertation Abstracts International, 2000. http://wwwlib.umi.com/cr/utexas/fullcit?p3004343.
Повний текст джерелаRibeiro, Andre Figueiredo. "Graph dynamics : learning and representation." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/34184.
Повний текст джерелаIncludes bibliographical references (p. 58-60).
Graphs are often used in artificial intelligence as means for symbolic knowledge representation. A graph is nothing more than a collection of symbols connected to each other in some fashion. For example, in computer vision a graph with five nodes and some edges can represent a table - where nodes correspond to particular shape descriptors for legs and a top, and edges to particular spatial relations. As a framework for representation, graphs invite us to simplify and view the world as objects of pure structure whose properties are fixed in time, while the phenomena they are supposed to model are actually often changing. A node alone cannot represent a table leg, for example, because a table leg is not one structure (it can have many different shapes, colors, or it can be seen in many different settings, lighting conditions, etc.) Theories of knowledge representation have in general concentrated on the stability of symbols - on the fact that people often use properties that remain unchanged across different contexts to represent an object (in vision, these properties are called invariants). However, on closer inspection, objects are variable as well as stable. How are we to understand such problems? How is that assembling a large collection of changing components into a system results in something that is an altogether stable collection of parts?
(cont.) The work here presents one approach that we came to encompass by the phrase "graph dynamics". Roughly speaking, dynamical systems are systems with states that evolve over time according to some lawful "motion". In graph dynamics, states are graphical structures, corresponding to different hypothesis for representation, and motion is the correction or repair of an antecedent structure. The adapted structure is an end product on a path of test and repair. In this way, a graph is not an exact record of the environment but a malleable construct that is gradually tightened to fit the form it is to reproduce. In particular, we explore the concept of attractors for the graph dynamical system. In dynamical systems theory, attractor states are states into which the system settles with the passage of time, and in graph dynamics they correspond to graphical states with many repairs (states that can cope with many different contingencies). In parallel with introducing the basic mathematical framework for graph dynamics, we define a game for its control, its attractor states and a method to find the attractors. From these insights, we work out two new algorithms, one for Bayesian network discovery and one for active learning, which in combination we use to undertake the object recognition problem in computer vision. To conclude, we report competitive results in standard and custom-made object recognition datasets.
by Andre Figueiredo Ribeiro.
S.M.
Mantel, Rolf-Martin. "Periodic forcing and symmetry breaking of waves in excitable media." Thesis, University of Warwick, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.263610.
Повний текст джерелаBordyugov, Grigory. "Dynamics and stability of pulses and pulse trains in excitable media." [S.l.] : [s.n.], 2006. http://deposit.ddb.de/cgi-bin/dokserv?idn=981984177.
Повний текст джерелаLai, Zhong Yuan [Verfasser]. "Wave dynamics in random, absorptive or laseractive media / Zhong Yuan Lai." Bonn : Universitäts- und Landesbibliothek Bonn, 2017. http://d-nb.info/1127666320/34.
Повний текст джерелаRobb-Smith, Tyler. "Electric filed induced rotational dynamics of carbon nanotubes in viscous media." Thesis, Queen Mary, University of London, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.538670.
Повний текст джерелаTränkle, Marion. "Material agency and performative dynamics in the practices of media art." Thesis, Brunel University, 2011. http://bura.brunel.ac.uk/handle/2438/8767.
Повний текст джерелаChen, Xi. "The Dynamics of Chinese Media Practices and Regulation: Explanations and Interpretations." Diss., Virginia Tech, 2007. http://hdl.handle.net/10919/30035.
Повний текст джерелаPh. D.
Mattea, Carlos. "Molecular dynamics in porous media studied by Nuclear Magnetic Resonance techniques." [S.l. : s.n.], 2006. http://nbn-resolving.de/urn:nbn:de:bsz:289-vts-55830.
Повний текст джерелаNewlon, Scott. "INTRUDER DYNAMICS RESPONSE OF GRANULAR MEDIA WITH NON-LINEAR INTERACTION POTENTIALS." OpenSIUC, 2017. https://opensiuc.lib.siu.edu/theses/2252.
Повний текст джерелаHamisi, Rajabu. "Modelling phosphorus dynamics in constructed wetlands upgraded with reactive filter media." Licentiate thesis, KTH, Hållbar utveckling, miljövetenskap och teknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-207613.
Повний текст джерелаThis reserch project was finacially supported by Lars Erik Lundberg scholarship foundation for projectnumber (2015/34 and 2016/12), ÅkeochGreta Lissheds Stiftelsen for project number (2015-00026), J.Gust. Richert Stiftelsen and Ecopool researchproject for smart and sustainable environment. QC 20170523
Moon, Miri. "Journalistic challenges and international news dynamics in the Korean peninsula." Thesis, Brunel University, 2015. http://bura.brunel.ac.uk/handle/2438/11221.
Повний текст джерелаLong, Jacob Andrew. "Time Dynamics and Stability of Political Identity and Political Communication." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1595519865595447.
Повний текст джерелаBudu, Paula. "Conditional and unconditional nonlinear stability in fluid dynamics." Thesis, Durham University, 2002. http://etheses.dur.ac.uk/3938/.
Повний текст джерелаSeale, Michael David. "Propagation of guided acoustic waves in composite media." W&M ScholarWorks, 1996. https://scholarworks.wm.edu/etd/1539623884.
Повний текст джерелаKampel, Guido. "Mathematical modeling of fines migration and clogging in porous media." Atlanta, Ga. : Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/19764.
Повний текст джерелаCommittee Chair: Goldsztein, Guillermo; Committee Member: Dieci, Luca; Committee Member: McCuan, John; Committee Member: Santamarina, Juan; Committee Member: Zhou, Haomin.
Lederman, Oren. "Hacking innovation - group dynamics in innovation teams." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/101790.
Повний текст джерелаThis electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (pages 95-101).
Innovative work is gradually shifting towards collaborative efforts by larger, multidisciplinary teams, making team efficacy an increasingly important field of study. Researchers in this field have mainly focused on laboratory experiments, which may not fully capture the complex situations that teams encounter in real life. The alternative, field studies, are difficult to maintain and often require significant time to produce results. In this thesis we propose a methodology that bridges the gap between these two settings -- the laboratory and the field. By combining a new, affordable electronic badge that captures vocalization data with an innovative setting -- the Hackathon -- we create a new environment for studying team performance. This methodology reduces the duration and maintenance burden of such studies, and offers new opportunities for examining the effects of interventions on teamwork. The preliminary results from our studies show a variety of individual and team behaviors that can be captured in Hackathons using badges, such as participation, the parity of contribution to group discussions, the level of turn taking, and the frequency and duration of meetings. In a Hackathon, we measure these behaviors throughout the entire life cycle of each team, observe how they change in response to different shocks, and study how well the team members collaborate and perform as a team.
by Oren Lederman.
S.M.
Robbel, Philipp. "Exploiting object dynamics for recognition and control." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/41752.
Повний текст джерелаIncludes bibliographical references (p. 127-132).
This thesis explores how state-of-the-art object recognition methods can benefit from integrating information across multiple observations of an object. Considered are active vision systems that allow to steer the camera along predetermined trajectories, resulting in sweeps of ordered views of an object. For systems of this kind, a solution is presented that exploits the order relationship between successive frames to derive a classifier based on the characteristic motion of local features across the sweep. It is shown that this motion model reveals structural information about the object that can be exploited for recognition. The main contribution of this thesis is a recognition system that extends invariant local features (shape context) into the time domain by adding the mentioned feature motion model into a joint classifier. Second, an entropy-based view selection scheme is presented that allows the vision system to skip ahead to highly discriminative viewing positions. Using two datasets, one standard (ETH-80) and one collected from our robot head, both feature motion and active view selection extensions are shown to achieve a higher-quality hypothesis about the presented object quicker than a baseline system treating object views as an unordered stream of images.
by Philipp Robbel.
S.M.
Post, E. Rehmi 1966. "Inertial measurement via dynamics of trapped particles." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/29991.
Повний текст джерелаIncludes bibliographical references (leaves 69-70).
We describe theoretical and practical aspects of the particle trap as an inertial sensor. The insight motivating this approach is that a trapped particle acts like a mass on a spring, but the restoring forces are provided by electrostatic fields. Exquisitely machined physical mechanisms can be replaced by carefully tuned mechanical physics. Such inertial sensors could be simpler to build yet exhibit superior performance because their operating parameters can be dynamically controlled. Most currently available inertial sensors are inherently planar devices that obtain no more than two degrees of motional sensitivity from a given proof mass. The availability of an accurate, inexpensive, integrated six-degree-of-freedom inertial sensor would enable new applications of inertial sensing that are presently either infeasible or unconsidered. By adding inertial terms to the Paul trap dynamics we derive classical observables that depend on the local acceleration field. We also confirm that these observables appear in practice, in what we believe to be the first electrodynamic particle trap accelerometer. An important (and unusual) aspect of our accelerometer is its dynamic tunability: its effective spring constant depends on the trap drive parameters. Our roughly constructed trap also exhibits a large region of linear response to acceleration, and we present evidence suggesting that our accelerometer has performance comparable to commercially available sensors.
by Ernest Rehmatulla Post.
Ph.D.
Hardy, Jonathan James. "Convergence and commercial speech : a study of the dynamics and the regulation of cross-media promotion in UK media." Thesis, Goldsmiths College (University of London), 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.408041.
Повний текст джерелаPfab, Robert Joseph. "Dynamics of single molecules in confined media and towards two-photon interference /." Zürich : ETH, 2006. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=16755.
Повний текст джерелаComolli, Alessandro. "Mechanism and stochastic dynamics of transport in Darcy-scale heterogeneous porous media." Doctoral thesis, Universitat Politècnica de Catalunya, 2018. http://hdl.handle.net/10803/620618.
Повний текст джерелаEl transporte de solutos en medios heterogéneos porosos exhibe comportamientos anómalos, que se caracteriza por rasgos que no pueden ser explicados en términos de modelos tradicionales basados en la ecuación de advección-dispersión con coeficientes efectivos constantes. Las características del transporte anómalo son el crecimiento temporal no lineal de la varianza de la concentración de soluto, los perfiles de densidad no gausianos y la curvas de llegada con colas pronunciadas. Entender y predecir el comportamiento del transporte en hidrología subterránea es crucial para aplicaciones ambientales e industriales, como la gestión de aguas subterráneas o la evaluación de riesgos en repositorios de residuos nucleares. La complejidad de estas tareas se debe a la heterogeneidad intrínseca en múltiples escalas de las formaciones geológicas y del gran número de grados de libertad. Por lo tanto, una descripción predictiva del transporte requiere un proceso de upscaling basado en propiedades medibles del medio y el flujo para el que los modelos time domain random walk (TDRW) y continuous time random walk (CTRW) proporcionan un marco adecuado. En esta tesis, se identifican los mecanismos que inducen transporte anómalo y se cuantifica su impacto en el transporte. Se proponen modelos de transporte parametrizados en términos de las propiedades del medio y el flujo. Entre los mecanismos que inducen comportamientos no fickianos, la heterogeneidad del flujo, relacionada con el desorden del medio, desempeña un papel fundamental. Por lo tanto, su impacto se estudia junto con los de otros mecanismos a lo largo de toda la tesis. Primero, se considera el atrapamiento de soluto debido a heterogeneidades físicas o químicas parametrizadas en términos de un ratio de atrapamiento constante y una distribución de tiempos de retorno. Se observan tres regímenes de transporte relacionados con las escalas temporales características del atrapamiento. A tiempos pequeños, el transporte está controlado por la advección hasta que las partículas comienzan a ser atrapadas. A continuación el incremento de la distancia entre partículas móviles e inmóviles origina un régimen superdifusivo que finalmente evoluciona hacia un régimen controlado por el atrapamiento. Después, se estudia el transporte en medios correlacionados en los que el movimiento de las partículas es descrito por un CTRW acoplado parametrizado según la distribución de velocidades del flujo y de las escalas espaciales. El desorden y la correlación generan comportamientos similares en los momentos del desplazamiento de las partículas, pero diferentes en las distribución de posiciones y de tiempos de llegada. A continuación, se estudia la relación entre flujo y transporte bajo diferentes condiciones de inyección, a través de las velocidades eulerianas y lagrangianas. La estadística lagrangiana evoluciona hacia un estado estacionario que depende de los modos de inyección. Se estudia la organización de las velocidades en flujos de Darcy y se desarrolla un CTRW para el transporte que se parametriza solo en términos de las propiedades del medio y del flujo. Este CTRW considera la no estacionariedad a través de modelos de velocidad markovianos. El impacto de la heterogeneidad advectiva se estudia considerando diferentes escenarios de desorden. Finalmente, se cuantifica el impacto de la difusión en medios heterogéneos estratificados considerando dos escenarios de heterogeneidad que se caracterizan respectivamente por velocidades y propiedades de retraso aleatorias. Estos mecanismos originan diferentes muestreos del desorden que generan procesos de transportes duales en tiempo y espacio. El transporte describe un Lévy flight correlacionado en el modelo de velocidades aleatorias y un CTRW correlacionado en el modelo de retraso.