Tesis sobre el tema "Connecté"
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Paris, Martine Pelser. "La télématique médicale : le médecin généraliste "connecté"". Montpellier 1, 1990. http://www.theses.fr/1990MON11119.
Texto completoLemasson, Germain. "Interaction animal machine : dispositif connecté pour chien d’assistance". Thesis, Lorient, 2016. http://www.theses.fr/2016LORIS414/document.
Texto completoDogs are the best friends of people and return them numerous services. The Handi'Chiens association trains assistance dogs for persons with reduced mobility. These dogs help disabled people in their daily lives and a strong socializing impact. People quickly feel dependent on their dog, and by fear of losing it despite its rigorous training, might not leave it enough freedom which results in negative consequences on its health. This work answers the question "How to improve the situation of the dog, with current technology, by increasing communication between a service dog and his handler with disabilities?" To address this issue, several electronic harnesses and collars prototypes have been developed and successfully tested. Experiments have shown that a dog is able to respond to commands from an electronic device, even in the absence of its handler. To allow people with disabilities to control such devices, an accessible mobile interface has also been developed and tested
Kaddah, Rim. "Gestion active de la demande basée sur l'habitat connecté". Thesis, Paris, ENST, 2016. http://www.theses.fr/2016ENST0025/document.
Texto completoThe Internet of Things (IoT) paradigm brings an opportunity for advanced Demand Response (DR) solutions. Indeed, it enables visibility and control on the various appliances that may consume, store or generate energy within a home. In this thesis, we consider solutions having the capability to produce direct control decisions at different granularities based on variables measured at homes. Control schemes are driven by an optimization based on utility functions. These functions are defined based on a generic approach that considers load’s flexibility and the impact of control decisions on users. The proposed approach does not impose any restrictions on the type of controlled appliances nor on the granularity of control decisions. This enables joint control of heterogeneous loads. We consider three types of control architectures, namely centralized, partially distributed and fully distributed solutions. Schemes based on these architectures differ in the distribution of decision making among entities involved in the control and data that is made available to these entities. Numerical analysis shows the trade-offs of proposed solutions from a performance, scalability and complexity perspectives
Kaddah, Rim. "Gestion active de la demande basée sur l'habitat connecté". Electronic Thesis or Diss., Paris, ENST, 2016. http://www.theses.fr/2016ENST0025.
Texto completoThe Internet of Things (IoT) paradigm brings an opportunity for advanced Demand Response (DR) solutions. Indeed, it enables visibility and control on the various appliances that may consume, store or generate energy within a home. In this thesis, we consider solutions having the capability to produce direct control decisions at different granularities based on variables measured at homes. Control schemes are driven by an optimization based on utility functions. These functions are defined based on a generic approach that considers load’s flexibility and the impact of control decisions on users. The proposed approach does not impose any restrictions on the type of controlled appliances nor on the granularity of control decisions. This enables joint control of heterogeneous loads. We consider three types of control architectures, namely centralized, partially distributed and fully distributed solutions. Schemes based on these architectures differ in the distribution of decision making among entities involved in the control and data that is made available to these entities. Numerical analysis shows the trade-offs of proposed solutions from a performance, scalability and complexity perspectives
Cellier, Colas. "Étude et simulation d’un système éolien connecté au réseau monophasé". Mémoire, École de technologie supérieure, 2012. http://espace.etsmtl.ca/1053/1/CELLIER_Colas.pdf.
Texto completoAuber, Romain. "Contribution à la reconnaissance d'activités à partir d'un objet connecté". Thesis, Normandie, 2019. http://www.theses.fr/2019NORMC242.
Texto completoThis manuscript deals with the recognition of activities from accelerometric data. The device used to collect the accelerometer data is eTact, a device developed by Bodycap. Several solutions are proposed to optimize the autonomy of the connected object. These solutions are implemented and compared on different data sets. The originality of one of these solutions is to binarize the data of the accelerometer before transferring them to an external platform where they are analyzed. The use of binary data induces the loss of a lot of information, however it is shown in this manuscript that it is possible to estimate, among other things, the parameters of an Auto Regressive model of a time series from the binary information on this series. In this respect, an identification algorithm is proposed and analyzed
Monot, Nolwenn. "Des systèmes d'aide à la conduite au véhicule autonome connecté". Thesis, Bordeaux, 2019. http://www.theses.fr/2019BORD0109/document.
Texto completoThis thesis is about the design of driving assistance systems for level 3 urban automated driving. Because of a more complex of the environment and a larger set of possible trajectories, the algorithms of highway automated driving are not adapted to urban environment. This thesis objective is to provide methods and algorithms to enable the vehicle to perform automated driving in urban scenarios, focusing on the vehicle lateral guidance and on the path planning. The proposed solutions operate in real-time on board of the automated vehicle prototypes. The contribution of this thesis is as theoretical as practical.After a synthesis of the driving assistance systems available on current cars and a presentation of the prototypes used for the validation of the algorithms developed in the thesis, a complete analysis of the vehicle lateral dynamics is carried out in time and frequency domains. This analysis enables the design of observers of the lateral dynamics in order not only to estimate signals required for the lateral guidance functions but also to increase reliability of available measurements. Based on the conclusions from the analysis of lateral dynamic, a multi-controller solution has been proposed. It enables the computation of a steering wheel input to follow a trajectory at any longitudinal speed. The solution is validated in simulation and on real road traffic for lane change scenarios. Another contribution consist in an analysis on the other vehicles of the environment is conducted in order to identify their behaviors and which maneuver there are performing. This analysis is essential for the path planning function developed in the thesis. This method, based on the A* algorithm and extended to respect geometric and dynamic constraints, firstly focuses on static environment such as a parking lot. Waypoints are added to the method in order to compute trajectories compatible with traffic regulation and improve the computation time. The method is then adapted for dynamic environment where, in the end, the vehicle is able to perform overtaking manoeuvers in a complex environment
Elgharib, Ahmed Omar Ahmed. "Différentes stratégies de contrôle pour le système d'éolienne connecté PMSG". Electronic Thesis or Diss., Aix-Marseille, 2022. http://www.theses.fr/2022AIXM0647.
Texto completoRenewable energy is considered as a viable alternative to conventional fossil fuel generators globally. One of the appealing and promising renewable energy sources is wind energy. This renewable energy source offers an excellent substitute for the generation of traditional electricity. Wind turbines based on PMSG are best suited for stand-alone applications due to their reliability. This research work proposes some efficient control methods associated with wind energy control. It is focused more on the readjustment of some available control approaches as the improvement of NSSFC (nonlinear static state feedback controller) and NDSFC (nonlinear dynamic state feedback controller) to increase the controller performance for such a system. In sequence with that, this work moves forward to another controller(NPIC) which has been added to this system by presenting a sensor-less control technique of direct driven PMSG wind turbine. Afterwards, PI Controller is studied in this work by integrating genetic algorithm that has significant impact on the efficiency and execution of wind turbine applications and their whole system. Model predictive control (MPC) is thelast controller that has been explored. All of these controllers are using PMSG, discussed under different operating ranges of wind speed. Several experimental tests were applied to wide variety of configurations in order to validate the simulation results produced. This research aims to serve as a detailed reference for future studies on the control of wind turbine systems
Danel, Thomas. "Extraction et analyse des données en construction : vers le chantier connecté". Thesis, Centrale Lille Institut, 2020. http://www.theses.fr/2020CLIL0004.
Texto completoConstruction suffers from low productivity, which is difficult to measure because there are many parameters. The data collected on construction sites today to build better and faster tomorrow. The objective of this research work is therefore to study and exploit the potential of data from construction sites to provide avenues of improvement for the sector's productivity. The first contribution consists of the analysis of the productivity factors of construction projects, and more particularly of the execution phase. Each construction site resource generates data. The study of the organization of the construction site also makes it possible to highlight the predominant role of the crane in the rough work phase. The second contribution is the exploitation of data from crane dataloggers, systems that allow the recording of crane data. As concreting remains for the moment the traditional method used to build, we propose to follow this particular activity. Algorithms capable of processing the signals and robustly identifying concrete pours on site have been developed. The results obtained thus allow the daily progress plan of the construction site to be drawn up automatically. The third contribution of this doctorate is the design and realization of a connected crane prototype. The model consists of a human-sized crane equipped with industrial sensors that can be remotely controlled using a mixed real and virtual cockpit. It forms the basis of the information system at the heart of the smart construction site
Danel, Thomas. "Extraction et analyse des données en construction : vers le chantier connecté". Thesis, Ecole centrale de Lille, 2020. http://www.theses.fr/2020ECLI0004.
Texto completoConstruction suffers from low productivity, which is difficult to measure because there are many parameters. The data collected on construction sites today to build better and faster tomorrow. The objective of this research work is therefore to study and exploit the potential of data from construction sites to provide avenues of improvement for the sector's productivity. The first contribution consists of the analysis of the productivity factors of construction projects, and more particularly of the execution phase. Each construction site resource generates data. The study of the organization of the construction site also makes it possible to highlight the predominant role of the crane in the rough work phase. The second contribution is the exploitation of data from crane dataloggers, systems that allow the recording of crane data. As concreting remains for the moment the traditional method used to build, we propose to follow this particular activity. Algorithms capable of processing the signals and robustly identifying concrete pours on site have been developed. The results obtained thus allow the daily progress plan of the construction site to be drawn up automatically. The third contribution of this doctorate is the design and realization of a connected crane prototype. The model consists of a human-sized crane equipped with industrial sensors that can be remotely controlled using a mixed real and virtual cockpit. It forms the basis of the information system at the heart of the smart construction site
Scanu, Lisa. "Vers des archétypes de modèles auto-configurables pour le bâtiment connecté". Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAT071/document.
Texto completoAs buildings become more energy-efficient, the effect of human activities on their global consumption increases. To limit this impact, a first attempt was made to increase the level of automation in buildings. However, from surveys led in residential and office buildings, Carassus and Sidler conclude that automation does not reduce the gap between predicted and effective consumption. This work reveals that static rules can not be sufficient. In order to reach the goal of low energy consumption in the operation phase of buildings, occupants must then be involved in the energy management process. The proposed work is part of a research project focusing on a system embedding energy services with a high level of interaction to empower users with energy services. The role of these energy services is to allow users to define their own objective and consequently generate information and advice regarding the best strategies to apply on building systems (HVAC systems, sun-shading devices, windows opening,…) and envelope configuration. An analysis of the sociological literature was made in order to implement relevant services for the users, favouring real and durable changes in their behaviours. Some of these services require thermal and aeraulic behavioural models easy to set up and little expert knowledge. This thesis focuses on the development and implementation of a model relevant for energy management end-user services. It involves to deal with the definition of relevant model structures together with parameter estimation methods to tune the parameter values. The model must be simple enough to ease its set up with estimation and prediction capabilities. The limits in terms of complexity and computational time are discussed. The energy management services should be configured by occupants thus it must not require much expert knowledge. Consequently, some sensors are needed to estimate the thermal and aeraulic model. Tests have been performed to limit the needed instrumentation. Relevant model structures are discussed because they should be generic: it should adapt to both mono-zone and multi-zone case studies and it should be based on a minimal number of sensors and require little expert knowledge
Mahamat, Chabakata. "Analyse et commandes des convertisseurs multi-niveaux pour un générateur photovoltaïque connecté au réseau électrique". Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLN024/document.
Texto completoThis PhD work, prepared at SATIE laboratory, is part of the promotion of solar photovoltaic (PV) energy. In this work, we are particularly interested in design and control of the grid-connected PV system in a context of use in Chad where cost, reliability, efficiency, and energy quality issues of the system should be taken into account. The considered grid is a low voltage grid (220 V) with a frequency equal to fifty hertz (50 Hz) but likely to vary, in which a power of five point two ( 5.2 kW) is injected. A design method of the filter passive to reduce the filter elements is proposed firstly. In order to reduce manufacturing cost and volume of the passive filter, we apply a technique consisting of dividing each inductance value and making it in several small inductances in series. This technique optimizes the conventional PV system. Then, we proposed a new grid-connected PV system architecture using a multi-level inverter. The adaptation of this innovative structure has reduced the manufacturing cost of passive filter by nearly 40 % compared to the classical optimized system. Finally, a decoupled PQ control, using a phase locked loop for sysnchronization, has been designed and applied for both systems. It is well adapted to the system with multilevel inverter
Riffonneau, Yann. "Gestion des flux énergétiques dans un système photovoltaïque avec stockage connecté au réseau : application à l'habitat". Grenoble 1, 2009. http://www.theses.fr/2009GRE10206.
Texto completoThe work done during this thesis contributes to the intensive penetration of the photovoltaic electricity production into the electric grid. Photovoltaic energy holds an immense potential, in particular in the housing sector, but intermittent nature limits its large scale development. In this thesis, we propose to add a storage element to the grid connected photovoltaic system (housing application). First, we introduce the notion of energy management in these systems called « hybrids systems ». The objective is to reduce the peak power consumption and production. Next, we propose and study optimized energy strategies based on predictive indications of irradiation, ambient temperature, power consumption and electricity grid prices. Finally, we bring theoretical solutions to the real time energy management, notably by proposing a solution to the problem of prediction uncertainty
Durand-Mégret, Béatrice. "Le rôle des adolescents dans la consommation familiale : l'adolescent connecté centre de gravité de la cross-canalité". Rouen, 2014. http://www.theses.fr/2014ROUED004.
Texto completoThis research is focused on the new forms of intergenerational relations, at the same time real and virtual, on the ground of the consumption cross-channel. Since purchases are made more and more from home, we attend a transformation of the process of decision and purchase within the family, offering the opportunity to the brands to revisit their marketing approaches. This resarch invites to revisit the concept of skill, confidence and perceived risk. It higlights the appearance of new phases in the process of decision and purchase. This research also reveals the interest of the Self Determination Theory since the interaction between the consumers is taken into account
Kazemzadeh, Rasool. "Analyse du comportement d'un ensemble alternateur tétraphasé-convertisseur matriciel à commutation naturelle connecté sur un réseau triphasé". Besançon, 2005. http://www.theses.fr/2005BESA2013.
Texto completoAThis research relates to the study of an electrical power generation through a multiphase machine and a natural commutated matrix converter. The generator runs at high speed and the converter works as frequency changer. The system, turbo alternator and matrix converter is called activegenerator. In a first chapter, the principle of operating is presented and the commutation criterion using only measurable values is determined. In the second chapter, the behaviour of a four phase active generator connected to a three-phase electrical power network is studied by simulation, through analysis of currents, voltages and power on two sides of the converter. Their frequency spectra are also analyzed. The main drawback is a high value for a current sub harmonic in the generator. Two adjustement parameters of the active generator that are piloting angle and electromotive force of the machine are chosen and their influences are studied. In a third part, a simplified model of the system at the fundamental frequency is proposed allowing the study of the power transferred between the generator and the networks. A single-phase equivalent model is presented for the whole of the system considering constant ratio between currents and voltages on the both side. The active and reactive power axes at network side are determined that gives the operating range. In a last part, the behaviour of the system in transient state has been studied when the machine runs at variable speed. In this case the converter output frequency is perfectly controlled. Network fault and behaviour of the system are also studied
Blanc, Guylaine. "Sélection assistée par marqueurs (SAM) dans un dispositif multiparental connecté : application au maïs et approche par simulations". Paris, Institut national d'agronomie de Paris Grignon, 2006. http://www.theses.fr/2006INAP0039.
Texto completoEbrahimi, Mojtaba. "Configuration et organisation dynamique du système manufacturier connecté pour un système basé sur l’approche World Class Manufacturing". Thesis, Lyon, 2020. http://www.theses.fr/2020LYSEI059.
Texto completoIn the context of the fourth industrial revolution (I4.0), manufacturing enterprises confront major challenges, in particular, technological, organizational, and methodological transformation as well as the determination of the roadmap to achieve these objectives. Knowing that the Lean Manufacturing approach and its derivative, World Class Manufacturing (WCM), are widely used in manufacturing companies, the evolution of this approach towards I4.0 could be the main key to success. The transformation of approach is one of the important projects of FPT Powertrain Technologies company, in which this CIFRE thesis was carried out. To identify the necessary transformation of the WCM approach and while building on the principles of I4.0, we first proposed creations and/or some modifications in the phases and stages of the technical pillars of WCM. In the second part, the contribution of this work is related to the development of a decision support system for a dynamic organization of production systems. In this respect, we focused on the problem of dynamic sequencing while taking into account real-time data and information about disruptive events. We proposed a mathematical optimization model to determine the optimal production sequencing by considering the dynamic aspect of the system. In parallel, a commercial simulation software, called FlexSim, is used, allowing us to develop a simulation model for the same problem. By using an optimization engine (OptQuest) integrated into FlexSim, we were also obtained a near-optimal solution with a significantly shorter calculation time. The comparison of the obtained results, as well as the advantages, disadvantages, and their applicability in a real manufacturing system, are also discussed
Dong, Trung-Kien. "Contribution à la modélisation dynamique des batteries Lithium-ion pour l’application photovoltaïque et stockage connecté au réseau". Grenoble INPG, 2010. http://www.theses.fr/2010INPG0066.
Texto completoThe aim of the thesis is the dynamic modelling of Lithium Iron Phosphate j Graphite (LiFeP04c) batteries. The work is part of the studies aiming to adapt new energy storage technologies for the photovoltaic applications. The developed model is also applicable for the simulation of Li-ion battery operation under electric vehicle profiles. Electrochemical Impedance Spectroscopy (EIS) measurements on LiFeP04C batteries show a good correlation with the EIS of Li-ion batteries found in the literature, and thus the known Equivalent Electrical Circuit model of Li-ion batteries has been used in the present mode!. Full ' parameterization of EEC models is not possible only with the EIS method and, therefore, a combined frequencyjtemporal method has been developed. An excellent correlation between simulated and measured date was observed in wide State Of Charge and chargejdischarge current range
Erbeia, Catherine. "Conception et réalisation d'un capteur interférométrique de déplacement intégré sur substrat silicium et connecté par fibres optiques". Grenoble INPG, 1990. http://www.theses.fr/1990INPG0064.
Texto completoFernandez, Sophie. "Comparaison des performances électriques d’un onduleur triphasé deux niveaux à commandes directes et indirectes connecté au réseau". Thesis, Lille 1, 2013. http://www.theses.fr/2013LIL10093.
Texto completoThe standards connections requirements of the decentralized generating sources to the French electricity network impose on conversion system to take into account the quality of the electric magnitudes in the converter output. Their efficiency is also a requirement leading given the powers brought into play. The challenge is to assess and improve the quality / efficiency compromise of these conversion systems by their PWM control strategy. To answer to these requirements, three phase hysteresis strategies (direct control), applied on a two- levels inverter structure have been developed to ensure a similar behavior of the three line currents. Controls on the line currents together with the fictitious polygonal currents were implemented. These two types of control are based on the same rules and simple modulation criteria to be implanted simply on real-time systems and can then be extended to converter structures fully controlled more complex. Most of these controls showed harmonic families in the produced voltage spectrum, reflecting a natural regularity in the produced switching of these direct controls. In this work, the width of the hysteresis band was considered fixed, but this parameter setting could be exploited in order to play also on the performance. Electrical and energy performances of these new direct control was evaluated and some proved better on these two criteria than the bibliographic direct controls
Delias, Lucie. "L'âge des usages. Usages sociaux des technologies numériques par les adultes âgés et représentations du "bien-vieillir connecté"". Thesis, Paris 3, 2019. http://www.theses.fr/2019PA030039.
Texto completoGrounded in an approach that combines sociology of internet use and critical gerontology, the goal of this thesis is to demonstrate that the socio-historic context of the last decades, where more positive representations of aging appeared – starting with the emergence of the “Third Age” and resulting in the contemporary figure of the dynamic “senior” – led to the renewal of social norms concerning older adults. Building on the already existing ideal of “successful aging”, the pressure of resisting the “decline” associated with old age continues to grow, mandating the development of both an active and connected lifestyle. This study then analyses how social uses of digital technologies by older adults are influenced by those cultural representations, and vice versa. To this end, a methodology based on the collection of various empirical elements has been built; it includes semi-structured interviews with individuals from 62 to 82 years old; ethnographic observation in computer classes offered by associations for retired people; and the analysis of several websites specialized in the development of “senior” sociability.It appears that digital technologies’ uses and representations help shape the complex construction of the identity of older adults, both as individuals and as a social group. These identities can vary depending on the type of institutions (commercial or non-profit) that promote discourses of “connected successful aging”, and on the profile of the public they target, but may also be affected by an individual’s social trajectory, generation, class and gender. Nevertheless, those social norms are interpreted and adapted in various ways; and through their practices and aspirations, older adults themselves can contribute to reinforcing them. Moreover, although the “connected” and active lifestyle is more likely to be applied by older people coming from the middle and upper class, the data collected revealed some common features in the attitudes and perceptions towards digital media of older adults, explained by their shared experience of being both a retired and aging person in an increasingly digitalized environment
Robitaille, Mylène. "Élaboration d'une méthode de protection d'îlotage pour un système de production distribuée connecté à un réseau électrique local". Thèse, Université du Québec à Trois-Rivières, 2006. http://depot-e.uqtr.ca/1357/1/030120325.pdf.
Texto completoTabanjat, Abdulkader. "Modélisation, commande et supervision d'un système multi-sources connecté au réseau avec stockage tampon de l'énergie électrique via le vecteur hydrogène". Thesis, Belfort-Montbéliard, 2015. http://www.theses.fr/2015BELF0266/document.
Texto completoThe limited reserves of fossil fuel and the pollution gases produced pave the way to promising alternativeRenewable Energy Sources (RESs) such as Solar Energy Sources (SESs) and Wind Energy Sources (WESs).SESs and WESs are freely available and environmentally friendly. However, RESs are intermittent in nature.Therefore, the smoothing of power fluctuations by storing the energy during periods of oversupply and restore it tothe grid when demand becomes necessary. Accordingly, Energy Storage Systems (ESSs) can be appropriatelyused for this purpose.Using several energy sources for constructing HPSs alongside with ESS will require an energy managementstrategy to achieve minimum HPS cost and optimal balance between energy generation and energy consumption.This energy management method is a mechanism to achieve an ideal energy production and to conveniently satisfythe load demand at relatively high efficiency.In this thesis, a Hybrid Power System (HPS) including Renewable Energy Sources (RESs) such as main sourcescombined with Gas Micro-Turbine (GMT) and hydrogen storage system such as Back-up Sources (BKUSs) hasbeen presented. The aim of this hybridization is to build a reliable system, which is able to supply the load andhaving the ability to store the excess energy in hydrogen form and reuse it later when demanded. Consequently, thestored energy at the end of each cycle will be zero and a minimum generated power cost is achieved. In addition,partial shading problem of Photovoltaic (PV) panels is comprehensively studied and a new solution based on simpleswitches and Fuzzy Logic Control (FLC) integrated into dSPACE electronic card is created. Consequently, a realtime PV panels reconfiguration and disconnecting shaded ones is performed and minimum power losses isachieved. Then, the PV panels are connected to a Proton Exchange Membrane Electrolyser (PEM ELS). Theemitted temperature by the PV panels is transferred to the endothermic element PEM ELS. Consequently, anefficiency enhancement of the hybrid system PVPEM ELS is realized
Boussebt, Amina. "Etude et mise en oeuvre de la technologie Li-Fi pour un lit de bébé connecté sans fil et sans radio". Electronic Thesis or Diss., Limoges, 2023. http://www.theses.fr/2023LIMO0091.
Texto completoThe field of the remote monitoring has experienced significant advancements in recent decades, and now covers different contexts, such as hospitals, retirement homes, and private homes also. The majority of existing systems are based on radio frequency technology (RF).We propose in this thesis, research focused on remote monitoring in a new context involving a nursery. Given the limitations of RF technology, including the impact of electromagnetic interference, and security vulnerabilities, an alternative solution is optical wireless communication technology. Therefore, we investigated the use of infrared technology for simultaneous transmission of data collected from sensors placed on the foot of baby beds, and also on the babies themselves lying in their beds within the nursery. The reception system consists of photodiodes positioned at the corners of a central lighting panel on the celling. The channel simulation carried out using ray-tracing and Monte-Carlo methods was used to determine the channel gain for each device. Several deployment scenarios were defined, considering the nature of the devices (removable or fixed) and the interchangeability of beds in the room. The channel sharing employs the code division multiple access (OCDMA) associated with the optical orthogonal codes (OOC) with the primary constraint being the137 multiple access interference (MAI). The performance of binary pulse position modulation (2- PPM) with OCDMA and soft decoding in reception was studied theoretically and by simulation involving the different scenarios. These scenarios consider a network of 11 users, consisting of 8 beds and 3 devices carried by babies. Results were obtained using the conventional correlation receiver without and with hard limiters, as well as a parallel interference cancellation receiver to reduce the impact of MAI. Additionally, the feasibility of implementing OCDMA technology for simultaneous optical wireless communication transmission was demonstrated through experimental work using a test bench developed in software-defined radio. The test bench was established using universal software radio peripheral (USRP), and specially designed wireless optical front-ends
Tanguy, Marion. "L' essor d'un port atlantique connecté : Nantes et le commerce des « isles de l'Amérique » durant le règne de Louis XIV (1661-1697)". Nantes, 2014. http://www.theses.fr/2014NANT3021.
Texto completoGilfriche, Pierre. "Analyse non-linéaire de la dynamique des systèmes complexes de contrôle physiologique pour évaluer performance et santé chez l'Homme connecté en situation écologique". Thesis, Bordeaux, 2019. http://www.theses.fr/2019BORD0301.
Texto completoMaintaining a healthy state relies on many interactions between neural structures largely distributed in the organism and operating at different timescales. This structural complexity participates in the adaptiveness of physiological systems through a multi-level integration providing the control system with critical properties of flexibility, robustness and adaptability. This complexity in neurophysiological control systems can be evaluated through the analysis of their output signals: a complex signal is associated with a complex physiological network, and hence with an efficient control. Nonlinear analyses of physiological signals have proven their ability to characterize such complexity by introducing quantitative markers. These analyses bring new perspectives to the understanding of control strategies participating in health and performance in humans. Particularly, neurophysiological control distribution can be explored under different constraints to reveal adaptation strategies to numerous daily challenges. This way, studying the time course of heart rate, locomotor rhythms and postural sway is a way to explore control strategies contributing to health and performance in humans, in various contexts and under different constraints. In the present work, the frequency content, fractal fluctuations and entropy levels in time series generated by these systems are studied under different conditions. In a context of applied research, the experimental work has been conducted not only in the laboratory but also in ecological situations using connected devices (smartphone). For each situation, a methodological reflection is led to identify the most appropriate complexity analysis method for the control system studied, in line with the measurement devices used (connected devices or laboratory sensors)
Le, Viet Phuong. "Logo detection, recognition and spotting in context by matching local visual features". Thesis, La Rochelle, 2015. http://www.theses.fr/2015LAROS029/document.
Texto completoThis thesis presents a logo spotting framework applied to spotting logo images on document images and focused on document categorization and document retrieval problems. We also present three key-point matching methods: simple key-point matching with nearest neighbor, matching by 2-nearest neighbor matching rule method and matching by two local descriptors at different matching stages. The last two matching methods are improvements of the first method. In addition, using a density-based clustering method to group the matches in our proposed spotting framework can help not only segment the candidate logo region but also reject the incorrect matches as outliers. Moreover, to maximize the performance and to locate logos, an algorithm with two stages is proposed for geometric verification based on homography with RANSAC. Since key-point-based approaches assume costly approaches, we have also invested to optimize our proposed framework. The problems of text/graphics separation are studied. We propose a method for segmenting text and non-text in document images based on a set of powerful connected component features. We applied dimensionality reduction techniques to reduce the high dimensional vector of local descriptors and approximate nearest neighbor search algorithms to optimize our proposed framework. In addition, we have also conducted experiments for a document retrieval system on the text and non-text segmented documents and ANN algorithm. The results show that the computation time of the system decreases sharply by 56% while its accuracy decreases slightly by nearly 2.5%. Overall, we have proposed an effective and efficient approach for solving the problem of logo spotting in document images. We have designed our approach to be flexible for future improvements by us and by other researchers. We believe that our work could be considered as a step in the direction of solving the problem of complete analysis and understanding of document images
Carbonnel, François. "Évaluation des interventions numériques visant un changement de comportement de santé : un enjeu paradigmatique". Thesis, Montpellier 3, 2017. http://www.theses.fr/2017MON30093/document.
Texto completoTo deal with the exponential increase of chronic diseases caused by health behavior (e.g., smoking, alcoholism, unhealthy eating, physical inactivity), non-pharmacological interventions (NPI) have become essential as a prevention tool and as a complement to treatments. Among these NPIs, behavioral intervention technologies (BIT) open up a promising field to a sustainable change in health behaviour (e.g., connected health devices, smartphone health apps, serious games). Beyond their ergonomics and their features, this thesis focuses on their evaluation in health, from their validation to their surveillance. The first study identifies the existing frameworks proposed around the world to evaluate these BITs and categorizes them, based on their underlying epistemological paradigm. The results show an exponential increase of these frameworks and a lack of consensus or convergence towards a common framework, as it had been the case for the drugs, by the end of the twentieth century. The second study is based on a systematic review used to identify 90 published interventional studies evaluating the benefits and the risks of digital solutions to fight against smoking. The results show that some BITs are effective against smoking but their effectiveness is based on a heterogeneous methodological corpus limiting the significance of the results produced. This heterogeneity is related to the inherent characteristics of the BITs (e.g., employed technologies and combination of technologies, multiplicity of the theories to change health behavior), to the chosen assessment methods (e.g., kind of control group, follow-up time) and to the chosen outcome measures (e.g., smoking reduction, smoking cessation). The discussion is focused on the current limitations to demonstrate the effectiveness and the risks of the BITs., due to parallel paradigmatic approaches, the biomedical paradigm, the engineering paradigm and the behavioral paradigm. The lack of consensus limits the comparability and the reproducibility of the results of the studies evaluating these BITs. Most of them are still gadgets, despite a promising potential, as predicted by the manufacturers. This thesis promotes the convergence to a consensual framework to determine the evidence-based benefits and risks of each BITs and introduces proposals to this effect
Carbillet, Thomas. "Monitoring en temps réel de la vitesse de déplacement sur dispositif connecté : modélisation mathématique sur plateforme mobile interfacée avec une base de données d'entraînement et d'audit physiologique". Thesis, Université Grenoble Alpes (ComUE), 2019. http://www.theses.fr/2019GREAM013/document.
Texto completoThe improvement running performance has become a major topic lately. We are getting closer to running a marathon in under 2 hours. However, there are not so many professionals working transversally regarding pre-race and in-race preparation concerning the general public. Training plans are based on trainers' experience and are often not custom-made. This exposes the runners to injury risk and motivation loss. It seems that the current analysis of training plans has reached a limit. The aim for BillaTraining® is to go beyond this limit by connecting the research with the general public of runners.This PhD has two main goals. The first one is trying to contribute to the research about running. After gathering and formatting trainings and races data from different origins, we tried to isolate and describe how humans run marathons including 2.5 to 4-hour performances. We studied acceleration, speed and heart rate time series among other things, with the idea of understanding the different running strategies.The second one is the development of a web application embracing the three steps of the BillaTraining® method. The first step is an energetic audit which is a 30-minute running session guided by the runner's sensations. The second step is the energetic radar which is the results of the audit. The last step is a tailor-made training plan built depending on the runner's objectives.In order to come up with a solution, we had to bring together Physiology, Mathematics and Computer Science.The knowledge we had in Physiology was based on professor Véronique Billat's past and current researches. These researches are now part of BillaTraining® and are central for the growth of the company.We used Mathematics to try to describe physiological phenomenons thanks to Statistics. By applying the Ornstein-Uhlenbeck model, we found that humans are able to run at an even acceleration. By using the PELT (Pruned Exact Linear Time) method we automated changepoints detection in time series.Finally, Computer Science allowed a communication between Physiology and Mathematics for research, as well as marketing training tools at the forefront of innovation
Klotz, Benjamin. "Les technologies sémantiques pour simplifer les interactions inter-domaines pour des véhicules connectés complexes". Electronic Thesis or Diss., Sorbonne université, 2019. http://www.theses.fr/2019SORUS168.
Texto completoVehicles are evolving from purely mechanical entities to highly connected and autonomous ones. While accessing this new rich data leads to new business and technical opportunities, making vehicle fleets interoperable is still highly challenging with competing standards, numerous vehicle signals and attributes, heterogeneous formats and vehicle architectures. In order to ensure replicability and interoperability we propose to use Semantic Web technologies in this thesis. In this thesis, we propose VSSo, a vehicle signal and attribute ontology that builds on the automotive standard VSS, and that follows the SSN/SOSA design pattern. VSSo is comprehensive while being extensible for OEMs, so that they can use additional private signals in an interoperable way. We describe a more general driving context ontology supporting the description of events and states of the various agents of driving situations: drivers, passengers, vehicles, roads, trajectories. We develop tools and demonstrators to highlight the benefit of the driving context ontology in predicting and contextualizing aggressive driving, and recommending POIs and safer routes. Finally, we contribute to the Web of Things specification by aligning our ontologies with it. We provide automotive-specific requirements and implementations, and highlight the benefit of the Web of Things for automotive application developers
Bachy, Yann. "Sécurité des équipements grand public connectés à Internet : évaluation des liens de communication". Thesis, Toulouse, INSA, 2015. http://www.theses.fr/2015ISAT0014/document.
Texto completoToday, equipment embedding software and an Internet connection are more and more numerous and various. With the emergence of “the internet of things” and the trend to interconnect everything, many equipment used in our every day life are now connected to the internet: Smart-Tvs, DVD players, alarm and home automation systems, and even health assistance home devices, for example. Unfortunately, these technological evolutions also introduce new security threats. The massive use of internet facilitates the propagation of malware, capable of targeting any computer device, and more specifically any internet connected device. Although several methods allowing security analysis of industrial systems exist, their application to home devices is still limited. The existence and the criticality of potential vulnerabilities in these devices are not well-known, because they have not been thoroughly studied. This is precisely the objective of this thesis, which presents a method allowing to carry out a vulnerability analysis of internet connected home devices. This method is composed of two main phases: a risk analysis phasefollowed by an experimental phase. The security analysis of any type of equipement, requires a good knowledge ofits environment. In order to guide the evaluator in this task, we propose, as a first step, to rely on existing risk analysis methods. These methods are now mature, and allow the evaluator to obtain a global view of the risks incurred by the usage of anequipment. Then, during the second step of our method, the evaluator concentrates on the most important risks in order to demonstrate the technical feasibility of the scenarios leading to the considered risks, by carrying out several experiments.Considering the large amount and the diversity of I/Os on connected devices, it is important to focus on specifically rich attack scenarios, possibly depending on a simple local vulnerability. For this second step, an experimental method is proposedin order to study these attack scenarios, which, moreover, target equipement whose specifications are not necessarily available.In order to illustrate the entire method, this thesis presents two case studies: Integrated Access Devices and Smart-Tvs. These studies are carried out on a panel of devices from major internet service providers and TV manufacturers, allowing us to compare several devices available on the market. The vulnerabilities pointed out, mainly concern the communication means (local loop for the IAD, DVB-T interface for the smart-TVs) connecting these devices to their service providers (ISP for the IAD, TV and VoD for the smart-TVs). These communication links are usually considered safe, and have been, to our knowledge, seldom explored. Thisthesis thereby contributes to the security analysis of these particular communication means for connected devices and points out some original attack paths. Finally, this thesis ends by presenting different existing security mechanisms that can be used to avoid exploitation of the identified weaknesses
Josse, Rozenn. "Méthode et outils pour l'identification de défauts des bâtiments connectés performants". Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAT074/document.
Texto completoThis thesis deals with the development of a new methodology for fault detection within smart high-performance buildings helping the performance guarantee. We first have placed our work in the current energy context by focusing on the major role of buildings in the decrease of energy consumption. Then we introduced our methodology and we argued about various techniques that could be used before making a choice. This methodology is made up of two main parts : the former reduces the uncertainties due to the occupant and the environment and the latter studies the gap between simulation and measurements thanks to a sensitivity analysis coupled with a bayesian algorithm. Then we implemented it within a tool that we named REFATEC. We carried out various tests in controlled conditions in order to evaluate its precision and its calculation time. This step showed that our methodology is effective but it has some difficulties when the studied period is during summer or when the faults are very located. is a very located fault. Eventually we confronted our methodology to a real case where we faced numerous questions that appear when dealing with measurements, especially their reliability and the uncertainties that still need to be taken care of, in the perspective of performance guarantee and fault detection
Toumieux, Pascal. "Conception d’un système d’évaluation à distance de la dépense énergétique liée à une activité physique : Application à la supervision de la dépense énergétique de patients en post - AVC". Thesis, Limoges, 2015. http://www.theses.fr/2015LIMO0141/document.
Texto completoThis thesis describes the design of a wireless device, communicating and estimating the energy expenditure (EE) related to physical activity of patients with low levels of physical activity (post stroke) in a sensitive environment such as hospitals by combining reliability and safety. The necessity of a new device is based on the results of preliminary studies and tests of commercially available devices (for the same use) based on accelerometers. To limit the impact of radio frequencies, we use optical technology with a wireless transmitter worn by a mobile patient (existing platform combined with an accelerometer and a system of transmission with infrared diode) and receiver fixed on the ceiling and connected via Ethernet to a remote computer for data analysis. The outage probability of a mobile wireless diffuse optical transmission was theoretically established by considering a low speed and a high quality of service in the conventional medical area. Measuring the number of frame losses during communication validates the theoretical performance of the optical wireless technology and proves the reliability of this type of mobile infrared transmission according to the number of receivers. The calculation of the EE has been performed on a pre-calibration from two people by comparing the results with those given by calorimetry and those given by a commercial device. We optimized the calibration by performing a test protocol with a larger sample of people and with a sample of eleven stroke people to validate the prototype
Mehar, Sara. "The vehicle as a source and consumer of information : collection, dissemination and data processing for sustainable mobility". Thesis, Dijon, 2014. http://www.theses.fr/2014DIJOS069/document.
Texto completoToday, vehicles have become more sophisticated, intelligent and connected. Indeed, they are equipped with sensors, radars, GPS, communication interfaces and high processing and storage capacities. They can collect, process and communicate information related to their working conditions and their environment forming a vehicular network. The incorporation of communication technologies on vehicles garnered a huge attention of industry, government authorities and standardizations organizations and opened the way for innovative applications that revolutionized the automotive market with the main goals to ensure safety on roads, increase transport efficiency and provide comfort to drivers and passengers. In addition, transportation is still an actively evolving sector. More sustainable means of transportation such as electric vehicles are introduced progressively to the automotive market with new challenges related to energy consumption and environment preservation that remain to be solved. Many research investigations and industrial projects are done to exploit the advantages of information and communication technologies (ICT) to fit with transportation challenges. However, having connected and cooperative vehicles creates a highly dynamic network characterized by frequent link breaks and message losses. To cope with these communication limitations, this thesis focuses on two major axis: (i) connected vehicle or connected mobility and (ii) sustainable mobility. In the first part of this thesis, data dissemination, collection and routing in vehicular networks are addressed. Thus, a new dissemination protocol is proposed to deal with frequent network fragmentation and intermittent connectivity in these networks. Then, a new deployment strategy of new communication infrastructure is developed in order to increase network connectivity and enhance the utilization of the network resources. Finally, a new routing protocol, for delay-sensitive applications, that uses the optimized infrastructure deployment is proposed. The second part focuses on sustainable mobility with a focus on electric vehicles and with the main objective is to reduce pollution issues and make better use of energy. A new architecture for electric vehicles fleet management is proposed. This latter uses the implemented protocols of the first part of this thesis in order to collect, process and disseminate data. It helps to overcome the limitations related to short autonomy of electric vehicles. Then, to meet energy balance challenges, a new deployment scheme for electric vehicles charging stations is developed. This solution helps to satisfy drivers’ demands in term of energy while taking into account available resources
Bouali, Baghli Rayhana. "Approche sémantique de la conception de services connectés : cadre d'architecture, algorithmique de composition, application à la maison connectée". Electronic Thesis or Diss., Paris, ENST, 2017. http://www.theses.fr/2017ENST0072.
Texto completoIn the context of the Internet of Things, the design of connected services - that is, services supported by connected objects - requires an end-to-end approach to not only meet the expectations of the recipients of these services but also to adapt the operation of these services to a wide range of execution conditions spreading from smart homes to smart cities. The semantic approach proposed in this thesis provides a level of abstraction that allows service designers to focus on the functional aspects of services and objects. It is part of a larger architecture framework that addresses, in addition to this semantic level, the more operational aspects of implementation of these services (Artifacts level) in potentially heterogeneous technical environments (Resources level). By proposing this semantic design approach, the thesis aims at achieving several objectives that can be grouped into three categories. The first category of objectives is to decompartmentalize the current world of connected services by decoupling services from connected objects and allowing the sharing of objects by several connected services. The openness induced by these first objectives leads to a second category of objectives that relates to the composition of connected services. Each service will have to be aware and adopt a behavior compatible with the other elements of its execution context. These contextual elements include of course the other services but also the physical phenomena and the actions of the occupants of the spaces concerned. Finally, the third category of objectives focusses on at the recipients of connected services in order to optimize the user experience through better requirement management and automatisms respectful of human behaviors. The theoretical basis of the semantic approach proposed in this thesis is a meta-model that defines the modeling elements needed to model services, connected objects and service behaviors in a declarative form
Marconot, Johan. "Fonction Physique Non-clonable pour la Sécurité du Cycle de Vie d'un Objet Cyber-physique". Thesis, Université Grenoble Alpes, 2020. http://www.theses.fr/2020GRALT011.
Texto completoThe thesis focus on the conception of solutions to secure, all along its lifecycle, the assets and the functions which are embedded into a connected object. The lifecycle induces multiple interactions which expose the assets. Still, each actor may need private access in order to perform technical operations which have to be done. The solution has to securely manage the access requests but also takes account of the fact that most of the connected object are resources constraints system.We provide two main contributions: the analysis of security requirements for the device lifecycle and a new model of extraction circuit for strong digital PUF. The identified configuration for the extraction circuit offer trade-off between the circuit area, the frequency and the security metrics. It allows to conceive an efficient DPUF which could be integrated at fabrication chip, ensuring authentication property and performance requirements for lifecycle
Di, Marco Lionel. "Récit d'ingénierie pédagogique en santé à l'usage de l'enseignant connecté Does the acceptance of hybrid learning affect learning approaches in France? Blended Learning for French Health Students: Does Acceptance of a Learning Management System Influence Students’ Self-Efficacy?" Thesis, Université Grenoble Alpes, 2020. http://www.theses.fr/2020GRALS024.
Texto completoBackground. The general objective of this thesis was to evaluate a hybrid pedagogical method using an integrated learning environment (ILE) in the training of health professionals. Three research questions followed one after the other. Does the acceptability of blended learning affect students' learning strategies and learning approaches? Does the acceptability of an ILE affect students' self-efficacy? What characteristics of a dematerialised course make students' attention variable?Materials & Methods. We carried out 2 quantitative observational studies, as well as a single-blind observational experiment coupled with a qualitative analysis, with different classes of midwifery students of Grenoble-Alpes University Faculty of Medicine.Results. Students have suited learning approaches and strategies despite the use of a hybrid teaching method which they reject; there is no correlation between poor acceptability of the ILE and different spheres of students' self-efficacy; and the variability of attention declared by students varies according to certain factors common to those detected by artificial intelligence (type of language, slide duration…).Discussion. The internal and external validities of this work highlight the close links between interest, motivation, engagement by identification, and attention. It is thus possible to put forward principles of pedagogical engineering in health within the framework of dematerialized courses focusing on the content, form and type of knowledge capsule. Finally, the health teacher must above all be “connected to” the students, so that technical developments can be adapted to their needs
Heydari, Elaheh. "Design and control of a new pulsating power decoupling circuit for grid-connected photovoltaic systems". Electronic Thesis or Diss., université Paris-Saclay, 2022. http://www.theses.fr/2022UPAST004.
Texto completoToday, grid-connected photovoltaic systems are becoming an increasingly important part of renewable energy. The power conversion system's heart is the grid-connected interface converter based on power electronics. The single-phase inverter is the best compromise for low power applications as an interface for power conversion. Single-stage systems offer higher efficiency and lower cost and size. However, the PV voltage drops under low irradiance conditions, leading to inverter shut down and the total injected power loss.As a consequence, single-stage systems suffer from a low operating range. This work addresses the critical issues of the single-stage single-phase grid-connected PV system, including reliability and efficiency. A fast terminal sliding mode combined with direct power control is proposed in the first part. It is associated with a maximum power point tracking algorithm with power output. Simulations and experimental results on a 1kW test bench show the proposal's effectiveness in terms of dynamic performance, low total harmonic distortion and robustness to irradiance variations. Single-phase power systems also face pulsating power at twice the mains frequency on the DC bus. This pulsating power should not be transferred to the PV side as it reduces the efficiency of the solar panel. Thus, the second part of this work proposes a dual-function decoupling circuit: it mitigates pulsating power and compensates for the voltage drop. Thanks to the following additional power converters, these objectives are fulfilled: a low power flyback and an H-bridge. The hybrid compensator increases the inverter's operating range, prevents its shutdown, and increases the system reliability. A 1kW experimental bench has been designed to evaluate the proposal for several operating points. The steady-state results show that the hybrid compensator can simultaneously achieve 85% compensation of the pulsating power and 20% compensation of the voltage drop. The circuit also shows good transient responses. In the third part of this work, monitoring and fault diagnosis of PV modules are addressed to increase system reliability, efficiency, and safety. The proposed fault diagnosis method is based on online PV impedance spectroscopy without additional equipment. It does not require interrupting the power production and uses the pulsating power decoupling circuit as an impedance spectroscopy tool. The simulation results, using MATLAB-Simulink®, show a reduction of more than 80% ripples amplitude of the PV modules terminal voltage. The results also show that impedance spectroscopy can estimate the PV module impedance parameters with a lower than 5% relative error. The evolution of these parameters during operation should make it possible to monitor the health of the panel
Mavridis, Theodoros. "Channel modeling for 60 GHz Body Area Networks". Doctoral thesis, Universite Libre de Bruxelles, 2015. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/216743.
Texto completoDoctorat en Sciences de l'ingénieur et technologie
info:eu-repo/semantics/nonPublished
Leon, Villa Jean Carlo Enmanuel, Martínez Yisely Mayuri, Arévalo Rossana Luz Merino y Huari Mayra Jaquelyn Padilla. "Trade Connects". Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2019. http://hdl.handle.net/10757/626251.
Texto completoIn 2018, a study was conducted that reveals the following: Peru is ranked third in the world with the largest number of "early stage enterprises". "Unfortunately, it seems that reaching later stages of development in the business is too expensive for the Peruvian entrepreneur compared to his peers from other countries participating in the study." This study indicates that there is a wide market for our project, since, although the percentage of them is very good, there are no accessible means and tools, with which greater development opportunities arise, that is, it does not find options for its projects can be implemented, and in the same way investors "can not see" these potential entrepreneurs. Thus, "Trade Connects" is created, a platform that solves, digitally, the venture capital investment needs of entrepreneurs with technology-based innovation models, mainly (StartUps) to initially accelerate , then escalate and finally commercialize (sell, rent, expand, etc.) their innovative projects. The project includes an investment of 84,259.07 which is financed at a cost of 31.86% obtaining an additional gain of 63,336.06 which implies an internal rate of return of 77% and a profit of 1.75 soles, for the shareholders with a total contribution of 84,259.07 at a cost of opportunity of 41.88% will obtain an additional gain of 52,565.61 and an internal rate of return of 105% with a benefit of 2.25 soles.
Trabajo de investigación
Sarisin, Mustafa Nevzat. "Design Of A Connected Pipe Test Facility For Ramjet Applications". Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12606078/index.pdf.
Texto completoair storage system, air heater system and test stand. Design of air storage system includes the design of pressure vessel and pressure &
flow regulation system. Pressure and flow regulation system is needed to obtain the actual flow properties that the combustor is exposed to during missile flight. Alternatives for pressure and air mass flow rate regulation are considered in this study. Air storage system designed in this thesis is 27.8 m3 at 50 bar which allows a test duration of 200 seconds at an average mass flow rate of 3 kg/s. Air heater system is utilized to heat the air to simulate the aerodynamic heating of the inlet. Several different combustion chamber configurations with different flame holding mechanisms are studied. The most efficient configuration is selected for this study. Combustion analysis of the air heater is performed by FLUENT CFD Code. Combustion process and air heater designs are validated using experimental data. Designed air heater system is capable of supplying air at a temperature range of 400-1000 K and mass flow rate range of 1.5-8 kg/s at Mach numbers between 0.1-0.5 and pressure between 2-8 bar. Finally the design of the test stand and ramjet combustor analysis are completed. 3D CAD models of the test stand are generated. Ramjet combustor that will be tested in the test setup is modeled and combustion analysis is performed by FLUENT CFD Code. The ramjet engine cruise altitude is 16 km and cruise Mach number is 3.5. Key-words: Air Breathing Engines, Ramjet, Connected Pipe, Direct Connect, Vitiator.
Weissenegger, Karin. "Species that connect". Thesis, KTH, Arkitektur, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-298830.
Texto completoHolmlund, Ida. "Connect : Work/Living". Thesis, Umeå universitet, Arkitekthögskolan vid Umeå universitet, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-159822.
Texto completoBondu, Mathilde. "Ethique et objets connectés". Master's thesis, Université Laval, 2020. http://hdl.handle.net/20.500.11794/67170.
Texto completoCe projet de recherche porte sur l’opportunité de l’éthique comme mode de régulation des objets connectés. Actuellement au cœur d’une véritable course à l’innovation se faisant de plus en plus pressante, nous relèverons qu’il s’agit de biens complexes rendant difficile leur appréhension par le droit. Ce sujet se focalisera ensuite sur le cadre juridique applicable à cette technologie au regard des données personnelles récoltées de manière massives pour pouvoir enrichir et assurer le fonctionnement de ces objets. Démontrant certaines limites de ce régime légal au regard du poids de l’économie de la donnée, l’éthique sera étudiée de manière théorique dans le contexte du numérique comme outil de régulation, y compris son utilité mais aussi son inévitable manipulation par les acteurs du numérique. Ce projet aura pour objectif enfin de dresser un bilan concret des initiatives véritablement destinées à assurer une meilleure régulation des objets connectés par l’éthique, finalement débitrice d’une forte collaboration entre les trois acteurs principaux du numérique : pouvoirs publics, entreprises et citoyens.
Garbiso, Julian Pedro. "Fair auto-adaptive clustering for hybrid vehicular networks". Thesis, Paris, ENST, 2017. http://www.theses.fr/2017ENST0061/document.
Texto completoFor the development of innovative Intelligent Transportation Systems applications, connected vehicles will frequently need to upload and download position-based information to and from servers. These vehicles will be equipped with different Radio Access Technologies (RAT), like cellular and vehicle-to-vehicle (V2V) technologies such as LTE and IEEE 802.11p respectively. Cellular networkscan provide internet access almost anywhere, with QoS guarantees. However, accessing these networks has an economic cost. In this thesis, a multi-hop clustering algorithm is proposed in the aim of reducing the cellular access costs by aggregating information and off-loading data in the V2V network, using the Cluster Head as a single gateway to the cellular network. For the example application of uploading aggregated Floating Car Data, simulation results show that this approach reduce cellular data consumption by more than 80% by reducing the typical redundancy of position-based data in a vehicular network. There is a threefold contribution: First, an approach that delegates the Cluster Head selection to the cellular base station in order to maximize the cluster size, thus maximizing aggregation. Secondly, a self-adaptation algorithm that dynamically changes the maximum number of hops, addressing the trade-off between cellular access reduction and V2V packet loss. Finally, the incorporation of a theory of distributive justice, for improving fairness over time regarding the distribution of the cost in which Cluster Heads have to incur, thus improving the proposal’s social acceptability. The proposed algorithms were tested via simulation, and the results show a significant reduction in cellular network usage, a successful adaptation of the number of hops to changes in the vehicular traffic density, and an improvement in fairness metrics, without affecting network performance
HULTROS, LISELOTT y XIYAO SONG. "Connect Four Robot : Implementation of AI-strategies in a Connect Four robot". Thesis, KTH, Mekatronik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-232992.
Texto completoFyra i rad är ett sällskapsspel för två personer i vilket de två spelarna turas om att lägga brickor i ett rutnät på 6x7 rutor. Varje spelare har brickor i sin egen specifika färg. Målet för varje spelare är att få fyra av sina egna brickor i en horisontell, vertikal, eller diagonal rad. Detta medan de hindrar den andra spelaren från att få fyra av sina brickor i en rad. Syftet med detta projekt är att designa och bygga en fyra i rad-spelande robot som kan spela mot en människa. För att göra det behöver roboten kunna fysiskt flytta och släppa brickor i spelets kolumner, räkna ut vilken kolumn som den ska lägga brickor i, samt kunna läsa av var motståndaren lägger sina brickor. För att uppnå detta byggdes en demonstrationsenhet. Den består av ett ram runt spelet, varpå motorer är placerade för att flytta och släppa brickor i spelet. Fotoreflektorer är placerade ovanför varje kolumn för att känna av spelarens brickor. Motorerna och sensorerna styrs av en Arduino medan en Raspberry Pi kör AI-algoritmen som räknar ut robotens nästa drag. Detta genomfördes med tillfredsställande resultat och vid projektets slut kunde roboten spela fyra i rad mot en mänsklig motsåandare och nästan alltid vinna.
Teachout, Jeffrey Frank Zoller Peter T. "E.M. Forster "Only connect" /". Diss., A link to full text of this thesis in SOAR, 2007. http://soar.wichita.edu/dspace/handle/10057/1179.
Texto completo"May 2007." Title from PDF title page (viewed on Dec. 29, 2007). Thesis adviser: Peter T. Zoller. Includes bibliographic references (leaves 51-54).
Chen, Gaoxiang Ivan y 陈高翔. "Connect community to waterfront". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2013. http://hub.hku.hk/bib/B50703018.
Texto completoHeurtefeux, Karel. "Protocoles Localisés pour Réseaux de Capteurs". Phd thesis, INSA de Lyon, 2009. http://tel.archives-ouvertes.fr/tel-00449801.
Texto completoSATO, Ken-ichi, Hiroshi HASEGAWA y Shoji KAKEHASHI. "Optical Cross-Connect Switch Architectures for Hierarchical Optical Path Networks". Institute of Electronics, Information and Communication Engineers, 2008. http://hdl.handle.net/2237/14993.
Texto completo