Dissertationen zum Thema „Détection du mode de transport“
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Lanciotti, Noemi. „Amélioration de la robustesse des machines synchrones spéciales multi phases dans un contexte de transport urbain“. Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLN055/document.
Der volle Inhalt der QuelleFive-phase flux switching machines have a fault tolerance and robustness that makes them very interesting from the point of view of reliability, as shown in chapter one of this work. In our studies we have explored the possibility of detecting faults that affect this type of machine using the signature of stator vibrations.Using the physical and mathematical tools presented in chapter two, we improved two multyphisics models, one based on finite elements method that it's presented in chapter three and the seconde one analitycal model, called permeance networks, in chapter four. The vibratory behavior of the machine was studied using these two models, under healthy and faulty conditions, in order to know how this behavior is influenced by the electrical and magnetic magnitudes of the machine. In addition, we have studied the possibility of detecting and discriminating different types of faults. Analytical model is a good estimator of fault behavior of the machine, despite its differences with the simulation.In chapter five, the two multiphysical models have been validated by experimental tests and we have been able to explain fault behavior by mechanical origin rather than magnetic origin.Finally, in chapter six, we used both models to study the fault behavior of the machine, at speeds above the experimental limit (3100 rpm)
Drosouli, Ifigeneia. „Multimodal machine learning methods for pattern analysis in smart cities and transportation“. Electronic Thesis or Diss., Limoges, 2024. http://www.theses.fr/2024LIMO0028.
Der volle Inhalt der QuelleIn the context of modern, densely populated urban environments, the effective management of transportation and the structure of Intelligent Transportation Systems (ITSs) are paramount. The public transportation sector is currently undergoing a significant expansion and transformation with the objective of enhancing accessibility, accommodating larger passenger volumes without compromising travel quality, and embracing environmentally conscious and sustainable practices. Technological advancements, particularly in Artificial Intelligence (AI), Big Data Analytics (BDA), and Advanced Sensors (AS), have played a pivotal role in achieving these goals and contributing to the development, enhancement, and expansion of Intelligent Transportation Systems. This thesis addresses two critical challenges within the realm of smart cities, specifically focusing on the identification of transportation modes utilized by citizens at any given moment and the estimation and prediction of transportation flow within diverse transportation systems. In the context of the first challenge, two distinct approaches have been developed for Transportation Mode Detection. Firstly, a deep learning approach for the identification of eight transportation media is proposed, utilizing multimodal sensor data collected from user smartphones. This approach is based on a Long Short-Term Memory (LSTM) network and Bayesian optimization of model’s parameters. Through extensive experimental evaluation, the proposed approach demonstrates remarkably high recognition rates compared to a variety of machine learning approaches, including state-of-the-art methods. The thesis also delves into issues related to feature correlation and the impact of dimensionality reduction. The second approach involves a transformer-based model for transportation mode detection named TMD-BERT. This model processes the entire sequence of data, comprehends the importance of each part of the input sequence, and assigns weights accordingly using attention mechanisms to grasp global dependencies in the sequence. Experimental evaluations showcase the model's exceptional performance compared to state-of-the-art methods, highlighting its high prediction accuracy. In addressing the challenge of transportation flow estimation, a Spatial-Temporal Graph Convolutional Recurrent Network is proposed. This network learns from both the spatial stations network data and time-series of historical mobility changes to predict urban metro and bike sharing flow at a future time. The model combines Graph Convolutional Networks (GCN) and Long Short-Term Memory (LSTM) Networks to enhance estimation accuracy. Extensive experiments conducted on real-world datasets from the Hangzhou metro system and the NY City bike sharing system validate the effectiveness of the proposed model, showcasing its ability to identify dynamic spatial correlations between stations and make accurate long-term forecasts
Abdi, Moussa. „Détection multi-utilisateurs en mode CDMA“. Paris, ENST, 2002. http://www.theses.fr/2002ENST0027.
Der volle Inhalt der QuelleLoureiro, Rui. „Bond graph model based on structural diagnosability and recoverability analysis : application to intelligent autonomous vehicles“. Thesis, Lille 1, 2012. http://www.theses.fr/2012LIL10079/document.
Der volle Inhalt der QuelleThis work deals with structural fault recoverability analysis using the bond graph model. The objective is to exploit the structural and causal properties of the bond graph tool in order to perform both diagnosis and control analysis in the presence of faults. Indeed, the bond graph tool enables to verify the structural conditions of fault recoverability not only from a control perspective but also from a diagnosis one. In this way, the set of faults that can be recovered is obtained previous to industrial implementation. In addition, a novel way to estimate the fault by a disturbing power furnished to the system, enabled to extend the results of structural fault recoverability by performing a local adaptive compensation directly from the bond graph model. Finally, the obtained structural results are validated on a redundant intelligent autonomous vehicle
Lewis, Dale B. (Dale Brian). „Freight mode choice : air transport versus ocean transport in the 1990s“. Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/11828.
Der volle Inhalt der QuelleLu, Simon. „Mode-Resolved Thermal Transport Across Semiconductor Heterostructures“. Research Showcase @ CMU, 2016. http://repository.cmu.edu/dissertations/708.
Der volle Inhalt der QuelleGourcuff, Claire. „Étude de la variabilité de la circulation du gyre subpolaire de l’Atlantique Nord à partir des données Ovide et des mesures satellitaires“. Brest, 2008. http://www.theses.fr/2008BRES2042.
Der volle Inhalt der QuelleThe cyclonic circulation of the North Atlantic subpolar gyre, between 50°N and 63°N, plays a key role in the climate variability. The Ovide program contributes to the observation of the circulation in this region. A section is repeated every two years in summer since 2002 between Greenland and Portugal following a path close the Fourex 1997 section. To get transport estimates across the sections, a geostrophic box inverse model is used, constrained with direct current measurements. Our new estimates of Fourex transports show the need to use constraints temporally associated with the section to get transports estimates representative of the circulation at the section realisation dates. It is also shown that altimetry velocities can be used instead of ADCP measurements to get transports across sections with the inverse model, provided that the a priori errors is correctly evaluated. Analysis of circulation across Ovide 2006 section display significantly weaker transports compared to 1997, 2002 and 2004, for aIl the main currents as well as for the Meridional Overturning Cell and the heat transport. Altimetry is used to interpret surface variability along the Ovide section from 1992 to 2007. An index is defined, which seems to indicate that northward surface transport was especially low during the whole year 2006 and turn back to less extreme values in the following years. Variability in freshwater fluxes across Fourex 1997, Ovide 2002, 2004 and 2006 sections is revealed in the last chapter, together with the EGCC position. This coastal current transport represents 15% of the total freshwater transport across the section
Nam, Ki Chan. „Mode choice analysis for commodity transport in Korea“. Thesis, Boston Spa, U.K. : British Library Document Supply Centre, 1992. http://ethos.bl.uk/OrderDetails.do?did=1&uin=uk.bl.ethos.248299.
Der volle Inhalt der QuelleHamed, Myriam. „Electron heat transport in tokamak H-mode pedestals“. Electronic Thesis or Diss., Aix-Marseille, 2019. http://theses.univ-amu.fr.lama.univ-amu.fr/191128_HAMED_534gjvrc761ijwn176jbu525de_TH.pdf.
Der volle Inhalt der QuelleIn H-mode plasmas, the modeling of the pedestal dynamics is an important issue to predict temperature and density profiles in the tokamak edge and therefore in the core. The EPED model, based on the stability of large scales MagnetoHydroDynamic (MHD) modes, is most commonly used to characterize the pedestal region. The EPED model has been successful until now. However, EPED model does not take into account small scales instabilities linked the the sharp pressure gradient and the pedestal characteristics prediction in terms of width and height is still open. Moreover, some recent analysis of JET plasmas suggest that another class of instabilities, called microtearing modes, may be responsible for electron heat transport in the pedestal, and thereby play some role in determining the pedestal characteristics. Microtearing modes belong to a class of instabilities where a modification of the magnetic field line topology is induced at the ion Larmor radius scale. This leads to the formation of magnetic islands, which can enhance the electron heat transport. The stability of MTMs has been theoretically studied in the past showing that a slab current sheet is stable in the absence of collisions. In contrast, recent gyrokinetic simulations in toroidal geometry found unstable MTMs, even at low collisionality. The purpose of our work is to improve the MTM stability understanding by comparing new analytical theory to linear gyrokinetic simulations. More precisely, physical mechanisms (magnetic drift, electric potential) are progressively included in the analytical description to recover the numerical simulations results and to "reconcile" numerical MTM investigations with theory
Liu, Ying-Chun, Thomas J. Roussel, Joshua D. Moore, Qi Wang und Keith E. Gubbins. „Dual-mode diffusion of argon confined in carbon nanotube bundles“. Universitätsbibliothek Leipzig, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-191369.
Der volle Inhalt der QuelleMaslov, Mikhail. „Particle transport in JET and TCV H-mode plasmas /“. Lausanne : EPFL, 2009. http://library.epfl.ch/theses/?nr=4450.
Der volle Inhalt der QuelleMann, Eleanor. „Cognitive and affective antecedents of commuter transport mode choices“. Thesis, University of Sussex, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.425857.
Der volle Inhalt der QuelleSadeghian, Paria. „Human mobility behavior : Transport mode detection by GPS data“. Licentiate thesis, Högskolan Dalarna, Institutionen för information och teknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:du-36346.
Der volle Inhalt der QuellePierre, Mathieu. „Transport mono-électronique et détection de dopants uniques dans des transistors silicium“. Phd thesis, Grenoble, 2010. http://www.theses.fr/2010GRENY045.
Der volle Inhalt der QuelleWe present low temperature electronic transport measurements in silicon-on-insulator nano-MOSFETs. Their electrical properties depend in particular on the junctions between the reservoirs and the transistor channel, determined during fabrication by the spacers deposited on both sides of the gate. The behaviour differences are emphasized at low temperature. In ultra-scaled transistors, with a typical gate length of 30 nm, dopants diffusion during activation annealing can result in a single dopant well coupled to the reservoirs located in the middle of the channel, below the gate. It is revealed at low temperature below the transistor threshold by resonant tunnelling through its energy levels. An estimation of its ionization energy gives an enhanced value as compared to the bulk value, attributed to the dielectric confinement of the donor. On the contrary, electrons can be confined in the transistor channel by high enough access resistances. Thus samples turn at low temperature into single electron transistors, with the island located below the gate. It is extended to coupled dots systems, by depositing several gates between source and drain. Their behaviour depends on the distance between gates and on spacers length. These systems are used to transfer a single electron
Pierre, Mathieu. „Transport mono-électronique et détection de dopants uniques dans des transistors silicium“. Phd thesis, Université de Grenoble, 2010. http://tel.archives-ouvertes.fr/tel-00540644.
Der volle Inhalt der QuelleGherbi, Elies. „Apprentissage automatique pour la détection d'intrusion dans les systèmes du transport intelligent“. Electronic Thesis or Diss., université Paris-Saclay, 2021. http://www.theses.fr/2021UPASG037.
Der volle Inhalt der QuelleDespite all the different technological innovations and advances in the automotive field, autonomous vehicles are still in the testing phase. Many actors are working on several improvements in many domains to make autonomous cars the safest option. One of the important dimensions is cybersecurity. Autonomous vehicles will be prone to cyberattacks, and criminals might be motivated to hack into the vehicles' operating systems, steal essential passenger data, or disrupt its operation and jeopardize the passenger's safety. Thus, cybersecurity remains one of the biggest obstacles to overcome to ensure vehicles safety and the contribution that this technology can bring to society. Indeed, the actual and future design and implementation of Autonomous Vehicles imply many communication interfaces, In-vehicle communication of the embedded system, Vehicle-to-X (V2X) communications between the vehicle and other connected vehicles and structures on the roads. Even though the cybersecurity aspect is incorporated by design, meaning that the system needs to satisfy security standards (anti-virus, firewall, etc.), we cannot ensure that all possible breaches are covered. The Intrusion Detection System (IDS) has been introduced in the IT world to assess the state of the network and detect if a violation occurs. Many experiences and the history of IT have inspired the cybersecurity for autonomous vehicles. Nevertheless, autonomous vehicles exhibit their own needs and constraints. The current state of vehicles evolution has been made possible through successive innovations in many industrial and research fields. Artificial Intelligence (AI) is one of them. It enables learning and implementing the most fundamental self-driving tasks. This thesis aims to develop an intelligent invehicle Intrusion detection system (IDS) using machine learning (ml) from an automotive perspective, to assess and evaluate the impact of machine learning on enhancing the security of future vehicle intrusion detection system that fits in-vehicle computational constraints. Future In-vehicle network architecture is composed of different subsystems formed of other ECUs (Electronic Controller Units). Each subsystem is vehicles. Our primary focus is on In-vehicle communication security. We conduct an empirical investigation to determine the underlying needs and constraints that in-vehicle systems require. First, we review the deep learning literature for anomaly detection and studies on autonomous vehicle intrusion detection systems using deep learning. We notice many works on in-vehicle intrusion detection systems, but not all of them consider the constraints of autonomous vehicle systems. We conduct an empirical investigation to determine the underlying needs and constraints that in-vehicle systems require. We review the deep learning literature for anomaly detection, and there is a lack of tailored study on autonomous vehicle intrusion detection systems using Deep Learning (DL). In such applications, the data is unbalanced: the rate of normal examples is much higher than the anomalous examples. The emergence of generative adversarial networks (GANs) has recently brought new algorithms for anomaly detection. We develop an adversarial approach for anomaly detection based on an Encoding adversarial network (EAN). Considering the behaviour and the lightweight nature of in-vehicle networks, we show that EAN remains robust to the increase of normal examples modalities, and only a sub-part of the neural network is used for the detection phase. Controller Area Network (CAN) is one of the mostused vehicle bus standards designed to allow microcontrollers and devices to communicate. We propose a Deep CAN intrusion detection system framework. We introduce a Multi-Variate Time Series representation for asynchronous CAN data. We show that this representation enhances the temporal modelling of deep learning architectures for anomaly detection
Bitzios, D. „Visitor mode choice“. Thesis, Queensland University of Technology, 2001. https://eprints.qut.edu.au/36146/1/36146_Bitzios_2001.pdf.
Der volle Inhalt der QuelleFini, Jean-Baptiste. „Détection et analyse du mode d'action de perturbateurs de l'axe thyroïdien chez Xenopus laevis“. Paris, Muséum national d'histoire naturelle, 2008. http://www.theses.fr/2008MNHN0041.
Der volle Inhalt der QuelleBazart, Loïc. „Détection de changement de mode de fonctionnement : application à la coulée continue de l'acier“. Thesis, Université de Lorraine, 2014. http://www.theses.fr/2014LORR0055/document.
Der volle Inhalt der QuelleMost of time a system is characterized by few operating modes, each of them could be describe by a model. In the case of the commutation between each operating mode is due to unknown process (fault, changing in condition,) it could be difficult to operate with this system and used the appropriate commands. With a partially supervised system (knowing of number of operating mode and model structure that represent each mode), a method is developed to detect the active operating mode at each time. Indeed, the analyses of the residual gradient, that obtain by product each local model together, permit to characterize the operating mode. Application of this method is presented with simulated data and industrial data of continuous casting to detect a particular phenomenon: the sticker. Finally, a rejection mode method is used on industrial thermal data in the same aim (detection of stickers in continuous casting)
Bazart, Loïc. „Détection de changement de mode de fonctionnement : application à la coulée continue de l'acier“. Electronic Thesis or Diss., Université de Lorraine, 2014. http://www.theses.fr/2014LORR0055.
Der volle Inhalt der QuelleMost of time a system is characterized by few operating modes, each of them could be describe by a model. In the case of the commutation between each operating mode is due to unknown process (fault, changing in condition,) it could be difficult to operate with this system and used the appropriate commands. With a partially supervised system (knowing of number of operating mode and model structure that represent each mode), a method is developed to detect the active operating mode at each time. Indeed, the analyses of the residual gradient, that obtain by product each local model together, permit to characterize the operating mode. Application of this method is presented with simulated data and industrial data of continuous casting to detect a particular phenomenon: the sticker. Finally, a rejection mode method is used on industrial thermal data in the same aim (detection of stickers in continuous casting)
Al-Hajri, Ghanem Mohamed. „The impact of sea-air mode on air cargo transport“. Thesis, Cranfield University, 1997. http://hdl.handle.net/1826/3259.
Der volle Inhalt der QuelleAraya, Yeheyies. „Detecting Swiching Points and Mode of Transport from GPS Tracks“. Thesis, Linköpings universitet, Kommunikations- och transportsystem, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-91320.
Der volle Inhalt der QuelleBruno, Antonio 1972. „Tearing-mode transport model in the reversed field pinch concept“. Thesis, Massachusetts Institute of Technology, 2002. http://hdl.handle.net/1721.1/30007.
Der volle Inhalt der QuelleIncludes bibliographical references (leaves 185-188).
In this thesis, a self-consistent model for analyzing the transport performance of a Reversed Field Pinch (RFP)-type of thermonuclear fusion reactor has been developed. The study has been focused on determining equilibrium configurations which describe a plasma evolution dominated by particular instabilities originated by plasma electrical resistivity (tearing-, or resistive interchange, modes). The ultimate goal is to provide a model of transport scaling in an RFP which can evaluate the global parameters describing the plasma confinement performance. Starting from a magnetic field configuration essentially given by Taylor's relaxation model, the self-consistent pressure profile is determined by assuming that the ohmic heating source raises the plasma pressure until the profile is locally marginally stable to tearing modes. A critical point here is the long held belief that an RFP, because of its bad curvature, would always be unstable to tearing or resistive interchange modes; that is, no marginally stable state exists. This belief turns out to be untrue. The basis for this statement is a careful ordering of the resistive layer dynamics, showing that thermal conductivity dominates over convection and compressibility. Thus, the use of the adiabatic equation of state in earlier work is not accurate for an RFP.
(cont.) As a result, tearing and interchange modes can indeed be stabilized in an RFP. In this model, a proper, selfconsistent definition of tearing-mode marginality has been used as a prescription for building the pressure profile. The actual numerical determination of the marginally stable profiles can be solved by using state-of-the-art personal computers. It is worth emphasizing that there are no free parameters in the model. Point checks indicate reasonable agreement with typical experimental data. Parametric numerical studies are also shown, spanning the operational space of RFP experiments, and finally providing the tearing mode transport scaling relations for the global confinement parameters. Comparisons with experiments as well as other transport models are shown.
by Antonio Bruno.
Ph.D.
Liu, C. P. „Understanding the factors influencing public transport mode choice in Taiwan“. Thesis, University College London (University of London), 2017. http://discovery.ucl.ac.uk/1575564/.
Der volle Inhalt der QuelleSalerno, Bruno. „Transport mode inference by multimodal map matching and sequence classification“. Thesis, KTH, Geoinformatik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-278988.
Der volle Inhalt der QuelleWang, Xin. „Turbulent Particle Transport in H-Mode Plasmas on Diii-D“. W&M ScholarWorks, 2016. https://scholarworks.wm.edu/etd/1477068266.
Der volle Inhalt der QuelleLiu, Ying-Chun, Thomas J. Roussel, Joshua D. Moore, Qi Wang und Keith E. Gubbins. „Dual-mode diffusion of argon confined in carbon nanotube bundles“. Diffusion fundamentals 11 (2009) 93, S. 1-2, 2009. https://ul.qucosa.de/id/qucosa%3A14066.
Der volle Inhalt der QuelleHautière, Nicolas. „Détection des conditions de visibilité et estimation de la distance de visibilité par vision embarquée“. Saint-Etienne, 2005. http://www.theses.fr/2005STET4006.
Der volle Inhalt der QuelleThe adverse weather conditions, in particular the fog, pose a problem for the drivers, who tend to overestimate distances, but also to the exteroceptive sensors which work less well. The detection and the quantification of the visibility conditions thus constitute a strong stake in terms of road safety. We propose two complementary methods onboard a vehicle aiming to estimate the visibility distance by using real time image analyses techniques. Both are based on the definition of the meteorological visibility distance, which is the greatest distance at which a black object of suitable dimensions can be recognized by day against the horizon sky. The first technique, using a model of atmospheric diffusion, detects and estimates the density of daytime fog by using a single camera. The second technique, using a generic property of the atmosphere, is able to estimate day and night the visibility distance under all meteorological conditions by using a stereoscopic sensor. On one hand, we evaluate our methods, thanks to several video sequences grabbed under different meteorological conditions, what constitutes a qualitative evaluation of the work done. On the other hand, we evaluate the methods, thanks to actual images of a specific site equipped with reference targets, which has been conceived and realized on the test facilities of Satory, what constitutes a quantitative evaluation
Kwan, Cho-yam Joe, und 關祖蔭. „To investigate slow mode transport for urban tourism in Hong Kong“. Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hub.hku.hk/bib/B49885923.
Der volle Inhalt der Quellepublished_or_final_version
Urban Planning and Design
Master
Master of Science in Urban Planning
Delacour, Cécile. „Transport et détection quantiques dans un nanofil supraconducteur réalisé par microscopie à force atomique“. Phd thesis, Grenoble 1, 2007. http://www.theses.fr/2007GRE10221.
Der volle Inhalt der QuelleThis work deals with realizations and measurements of superconducting quantum devices. For patterming these devices, we use a technique of near field lithography : the local oxydation of a thin metallic layer with an atomic force microscope (AFM). We apply this technique to Nb and NbN ultra-thin films (2-10 nm) epitaxaly grown on sapphire substrates. The ultimate resolution that we obtain is of 10nm. It enables us to carry out crystalline nanowires whose section is nanometric (100nm2) and homogeneous at long distances( 40µm). In preliminary studies, we characterize the crystalline quality of films and we measure their electrical properties at the lowest temperatures. These studies are performed for several film?s thicknesses and allow the analyse of the superconducting-insulating transition in ultra-thin films according to the disorder measured in the layers. We determine the dissipative modes of the superconducting nanowires at very low temperatures. In the hot-spot regime, we show that the nanowires allow fast detection of single photons. The detectors are sensitive to one photon in the visible and two photons in infrared. These superconducting devices could be used like photons counters and then be useful for implementing a quantum cryptography and making safe transmission of the informations
Delacour, Cécile. „Transport et détection quantiques dans un nanofil supraconducteur réalisé par microscopie à force atomique“. Phd thesis, Université Joseph Fourier (Grenoble), 2007. http://tel.archives-ouvertes.fr/tel-00333114.
Der volle Inhalt der QuelleFrangou, Lamprini. „Injection, transmission et détection de spin dans les matériaux antiferromagnétiques“. Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAY079/document.
Der volle Inhalt der QuelleAntiferromagnetic spintronics is an emerging research field in the area of information technology that exploits the unique combination of properties of antiferromagnets. It is their high excitation frequency, robustness against external fields, zero net magnetization and possibility of generating large magneto-transport effects that makes them so interesting. Spin transfer, spin-orbit coupling and spin caloritronics constitute the phenomena that have shaped much of the recent research and development towards pure antiferromagnetic spintronics. Here we investigate spin transfer torque and spin pumping in both metallic and insulating antiferromagnets by means of ferromagnetic resonance technique, in ferromagnetic spin injector – NiFe, CoFeB / (spin conductor – Cu) / antiferromagnetic spin sink – IrMn, NiFeOx, NiO trilayers. Temperature dependence measurements of the ferromagnetic relaxation revealed a novel spin pumping effect associated to the linear fluctuations at the magnetic phase transition of the antiferromagnet, regardless its electronic state and the nature of the spin transport. This opens new ways towards more efficient spin pumping, while providing at the same time a versatile method to probe the critical temperature of ultrathin films with zero net magnetization. Next, in an effort to probe linear as well as non-linear fluctuations in the antiferromagnet we conducted electrical measurements in spin Hall geometry. A novel non-monotonous temperature dependence of transverse dc voltage was sometimes observed, mostly associated to the properties of a specific ferromagnet: Permalloy, unrelated to spin rectification effects. These findings add to a growing body of literature on spin current absorption, highlighting the ability of ferromagnets to act as spin current detectors, in phenomena involving magnetization dynamics. Finally, we used exchange bias to investigate and subsequently engineer the magnetic and electric properties of various antiferromagnets intended for diverse spintronic applications including reading via tunneling anisotropic magnetoresistance
Pedersen, Tore. „Affective Forecasting in Travel Mode Choice“. Doctoral thesis, Karlstads universitet, Avdelningen för psykologi, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-8685.
Der volle Inhalt der QuelleOffranc, Olivier. „Composants pour la génération et la détection d'impulsion térahertz“. Phd thesis, Université des Sciences et Technologie de Lille - Lille I, 2010. http://tel.archives-ouvertes.fr/tel-00520617.
Der volle Inhalt der QuelleGueye, Bonfils. „Processus de développement d'une agglomération et interaction de deux systèmes de transport : mode conventionnel et mode traditionnel à Abidjan“. Paris 12, 1989. http://www.theses.fr/1989PA120030.
Der volle Inhalt der QuelleA major contradiction has always dominated the relationship between the conventional public transportation system and the traditional one in abidjan : in one side an institutional and juridical environnement caracterised by the affirmation of the monopoly of the service to the conventional mode, accordingly the non acknowlegment of the traditional mode and in the auther side a permanent situation of deficit of the offer compared with the needs of transportation. In the outline of that contradiction, the coexistence of the two transportation forms brings concurrential relationships with conflictual aspects where the state apparatus has often taken an active part. But in reference to the importance of travel problems to solve, that conflictual vision of their relations has to be cleaned up in front of their complementarities wich appear at many levels of the points of their articulation. Then, the decision to liberalise the public transport sector brought by the growing difficulties of the state apparatus to sustain the conventional system, at the level of it's application modalities, has to pass the restrictive vision of the world bank to privilege the construction of a global system based on existing modes coupled with new ones in a coordination framework conducted by a "autorite organisatrice" of public transports
Andrieu, Nelly, und Lee Weiss. „Transport mode and network architecture : carbon footprint as a new decision metric“. Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/45250.
Der volle Inhalt der QuelleIncludes bibliographical references (leaves 132-133).
This thesis examines the tradeoffs between carbon footprint, cost, time and risk across three case studies of United States' perishable or consumer packaged goods firms and their transportation partners. Building upon previous research, and utilizing an Institute of Management and Administration (IOMA) and MIT Center for Transportation and Logistics (CTL) survey of supply chain professionals, the goal of this thesis is to better understand the decision process and motivations of our case study companies with regard to carbon footprint and implications for transport mode and network architecture, and the tradeoffs involved in making these decisions. We examine: (1) An expedited refrigerated rail service providing coast-to-coast shipment of produce for a major retailer, in lieu of its prior trucking arrangement; (2) A dairy producer which with the help of its trucking partner switched from less-than-truckload (LTL) to full truckload (FTL) and currently explore the possibility to re-organize its distribution network; and (3) A bottled water firm which created an additional container shipping route to reduce the volume of water it ships via truck. Comparisons and contrasts are made between case study firms. Findings from these case studies are used to make forward-looking recommendations for companies interested in altering transport mode and/or network architecture as a means of reducing the carbon footprint of their operations.
by Nelly Andrieu and Lee Weiss.
M.Eng.in Logistics
Tetali, S. „Distance, transport mode, and road safety on school journeys in urban India“. Thesis, London School of Hygiene and Tropical Medicine (University of London), 2017. http://researchonline.lshtm.ac.uk/3449897/.
Der volle Inhalt der QuelleAnders, Jason C. „Gated Hall and field-effect transport characterization of e-mode ZnO TFTs“. Wright State University / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=wright1628759244201245.
Der volle Inhalt der QuelleDa, Mota Nicolas. „Détection électrochimique intégrée dans un canal microfluidique : transport de masse et couplage entre microélectrodes à l'état stationnaire“. Paris 6, 2007. http://www.theses.fr/2007PA066132.
Der volle Inhalt der QuelleYamaguchi, T., und S. Koda. „Mode-coupling theoretical analysis of transport and relaxation properties of liquid dimethylimidazolium chloride“. American Institute of Physics, 2010. http://hdl.handle.net/2237/14157.
Der volle Inhalt der QuelleMialaret, Benoît. „Pôles d'échanges multimodaux et interfaçage des échelles de transport“. Thesis, Montpellier 3, 2015. http://www.theses.fr/2015MON30086/document.
Der volle Inhalt der QuelleConfront the challenges posed by air pollution and congestion on urban and suburban roads and urban sprawl, the multimodal hubs are designed and implemented as a sustainable mobility development tools, which may promote the use of complementary modes of transport (walking, cycling, transit buses, trams, subways ...).Their presence increasingly assertive along public transport axes own site demonstrates their adaptability to different institutional contexts, territorial and reticular. Their goal is to limit car traffic entering the cities, and generate sufficient modal shift towards public transport. This gives rise to very extensive studies in estimating flow and urban integration. Indeed, multimodal hubs have relations with the neighborhoods where they are located.But this profusion of multimodal hubs, which is observed over the past thirty years - with an acceleration in the early 2000’s - actually hides realities very different, as are the names that give them local transport authorities. Despite standardization attempts made by the government, we find that the operation of multimodal hubs and their physical configuration leads to meet local needs and compromise between the different actors involved in the construction and operation of this type of equipment.Our thesis therefore proposes to draw up an inventory of research for multimodal hubs and intermodality, by using many tools and methods (surveys and field surveys, interviews with professionals involved in public transport sector, model-process and inventory of available services) to determine whether the multimodal hub is a major element of public transport policies and if it contributes, within it, interfacing complementary scales transport
Pham, Van Tuong. „Nanostructures ferromagnétiques/non-magnétiques pour la mesure électrique de l'effet Spin Hall et la détection de murs de domaine“. Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAY026/document.
Der volle Inhalt der QuelleThe bulk effect of the interconversion between charge current and spin current is activated by spin Hall effect (SHE) and its inverse. It is vastly recognized that the SHE originate of the strong spin–orbit coupling in nonmagnetic materials. This thesis is focused on a proposal techniques to characterize SHE and inverse spin Hall effect (ISHE) in the ferromagnetic/nonmagnetic (F/N) nanostructure and electrical detection of magnetic domain walls by using SHE and ISHE. We will briefly give the cornerstones and the basic spintronic concepts, in order to ease the understanding of the work presented in this thesis, and the state-of-the-art of the SHE investigations. In the second part, a technique of F/N nanostructure are proposed and applied to detect the spin Hall angle and spin diffusion length of Pt. Then the technique will be used to characterize the SHE/ISHE in different materials, heavy metal and alloys. The influence of the interfaces in the device will also investigated. In the last of this manuscript, we demonstrate a domain wall (DW) detection method, based on the ability for a ferromagnetic nanowire, in which a DW is pinned, to inject or detect a PSC what can be produced/detected by SHE/ISHE
Marcon, Lionel. „Détection électrique d'anticorps sériques humains à l'aide d'un nanocapteur“. Lille 1, 2005. https://ori-nuxeo.univ-lille1.fr/nuxeo/site/esupversions/1cfe627c-1fb1-4dac-aa87-bfa288fa6c5c.
Der volle Inhalt der QuelleUrdampilleta, Matias. „Spintronique moléculaire de la vanne de spin à la détection d'un spin unique“. Phd thesis, Université de Grenoble, 2012. http://tel.archives-ouvertes.fr/tel-00770488.
Der volle Inhalt der QuelleWang, Yue. „Sensitivité de la méthode dite de mélange des courants pour la détection du déplacement nano-mécanique“. Thesis, Bordeaux, 2017. http://www.theses.fr/2017BORD0659/document.
Der volle Inhalt der QuelleDetection of nanomechanical displacement by electronic transport techniques has reached a high level of sensitivity and versatility. In order to detect the amplitude of oscillation of a nanomechanical oscillator, a widely used technique consists of coupling this motion capacitively to a single-electron transistor or, more generally, to a transport device, and to detect the high-frequency modulation of the current through the nonlinear mixing with an electric signal at a slightly detuned frequency. This method, known as mixing-current technique, is employed in particular for the detection of suspended carbon nanotubes and has proven to be particularly successful leading to record sensitivities of mass and force detection. In this thesis we study theoretically the limiting conditions on the sensitivity of this method in different kind of transport devices. The sensitivity is a compromise between the noise, the back-action noise, and the response function. The latter is proportional to the electromechanical coupling. For these reasons in the thesis we study the response function, the effect of current and displacement (back-action) fluctuations for the following detection devices: (i) the metallic single electron transistor, (ii) the single-electronic level single electron transistor, and (iii) the coherent transport quantum dot. The optimal sensitivity is obtained, as usual, when the back-action of the detection device equals the intrinsic signal noise that, in our case, is the current noise. We found that the typical optimal values of the coupling are obtained in the strong coupling limit, where a strong renormalization of the resonating frequency is observed and a bistability of the mechanical oscillator is present [as discussed in G. Micchi, R. Avriller, F. Pistolesi, Phys. Rev. Lett. 115, 206802 (2015)]. We thus find upper bounds to the sensitivity of the mixing-current detection technique. We also consider how the mixing-current technique is modified in the limit where the tunneling rate becomes comparable to the resonating frequency of the mechanical oscillator
Jeong, Seong-Ho. „Flow management for voice/data transport over UDP/TCP based networks“. Diss., Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/15648.
Der volle Inhalt der QuelleAbadie, Thomas. „Détection électrochimique de gradients de concentration ou de gouttes générés à l'intérieur d'un canal microfluidique : approche théorique et expérimentale“. Thesis, Paris 6, 2016. http://www.theses.fr/2016PA066643/document.
Der volle Inhalt der QuelleElectrochemistry enables the implementation of relevant and appropriate detection techniques to the miniaturization constraints imposed by the design of labs-on-a-chip. The aim of this thesis was to study the detection of electroactive species flowing within microfluidic channels under the form of concentration gradients or microdroplets. Therefore, two approaches were undertaken by means of microband electrodes integrated within microchannels. The first one was to study the opportunity to control the electrochemical generation and detection of concentration gradients in continuous flow. The amperometric responses were analyzed as a function of the characteristics of concentration gradients after the generation and propagation processes. Two boundary behaviours were evidenced by numerical simulations and validated experimentally. The second approach was to implement the electrochemical detection of droplet content in segmented flow. The challenge was both to demonstrate the feasibility of the experiments and to introduce relationships between currents and concentration or amount of species inside droplets. In this context, an innovative microdevice was designed and tested experimentally allowing the total electrolysis of the droplets
Cyril, Picard. „Ondes capillaires à une interface fluide fonctionnalisée : détection micromécanique de brins d'ADN“. Grenoble INPG, 2007. http://www.theses.fr/2007INPG0045.
Der volle Inhalt der QuelleWhatever the context is (biotechnology, molecular biology) biochips are now considered as a relevant system to detect biological molecules. The recent idea of a fluid biochip, which relies on the capture of target molecules at a functionalized liquid interface, allows in particular the use of the rheological interfacial properties as a micromechanical diagnostic : a change in the surface rheology can be induced by the hybridization between probe and target molecules. The relevance of such a device in the field of DNA detection is studied experimentally. A meniscus capillary wave net is promoted at the surface of a water sub-phase contained in cylindrical cell submitted to vertical vibration. The geometry of the wave net, which is characterized by two optical techniques, demonstrates a sensitivity to the surface tension and to the rheological interfacial properties. The value of these micromechanical parameters depends on the fact the DNA is single-stranded or double-stranded
AlSaeid, Hana M. „The potential effects of alternative transport policies on commuters' mode choice in metropolitan Kuwait“. Thesis, University of Newcastle Upon Tyne, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.505840.
Der volle Inhalt der QuelleDenktas, Sakar Gul. „Mode choice decisions and the organisational buying process in multimodal transport : a triangulated approach“. Thesis, Cardiff University, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.528076.
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