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Artykuły w czasopismach na temat "Dispositifs à bas coût"
L’Horty, Yannick. "Quand les hausses du SMIC réduisent le coût du travail". Revue économique 51, nr 3 (1.05.2000): 499–512. http://dx.doi.org/10.3917/reco.p2000.51n3.0499.
Pełny tekst źródłaFokapu, Odette, Daniel Hennequin, Dave Lollman, François Piuzzi, Annick Suzor-Weiner i Paul Woafo. "Le concours « Challenge Physique Expérimentale en Afrique »". Reflets de la physique, nr 58 (czerwiec 2018): 38–41. http://dx.doi.org/10.1051/refdp/201858038.
Pełny tekst źródłaAbikou, Jérôme Michel, Josué Yisségnon Gouw Akinou, Inoussa Chabi Sero i Jacob Afouda Yabi. "Analyse de l’Efficacité Économique des Systèmes de Culture du Riz en Bas-fonds dans la Commune de Malanville, au Nord-Benin". European Scientific Journal, ESJ 19, nr 10 (29.04.2023): 169. http://dx.doi.org/10.19044/esj.2023.v19n10p169.
Pełny tekst źródłaMoliton, Jean-Pierre, i Thierry Trigaud. "Vers l'optoélectronique organique bas coût". J3eA 4 (2005): 006. http://dx.doi.org/10.1051/j3ea:2006010.
Pełny tekst źródłaMopaté Logténé, Youssouf, Madjina Tellah, Ali Brahim Bechir i Alladoum Nayo. "Caractérisation de la filière porcine dans les villes de Pala et Moundou en zone des savanes du sud-ouest du Tchad". Revue d’élevage et de médecine vétérinaire des pays tropicaux 73, nr 1 (28.02.2020): 3–10. http://dx.doi.org/10.19182/remvt.31291.
Pełny tekst źródła-ZOLESIO, J. L. "Radar à balayage électronique bas coût". Revue de l'Electricité et de l'Electronique -, nr 01 (2000): 57. http://dx.doi.org/10.3845/ree.2000.004.
Pełny tekst źródłaTouam, Malik, Nhân Luong i Nguyen Khoa Man. "Générateur de dialyse et hémodialyse à bas coût". Néphrologie & Thérapeutique 15 (kwiecień 2019): S109—S113. http://dx.doi.org/10.1016/j.nephro.2019.02.006.
Pełny tekst źródłaLe Bras, Yannick. "Instrumentation à bas coût pour l’électrotechnique en TBT". J3eA 22 (2023): 1028. http://dx.doi.org/10.1051/j3ea/20231028.
Pełny tekst źródłaDort, Aurélie. "L’incertain remboursement de la dette publique". Gestion & Finances Publiques, nr 4 (lipiec 2021): 17–24. http://dx.doi.org/10.3166/gfp.2021.4.003.
Pełny tekst źródłaGodon, Alain, Rémy Guyonneau i Franck Mercier. "Une arène bas coût pour l’enseignement de la robotique". J3eA 22 (2023): 1026. http://dx.doi.org/10.1051/j3ea/20231026.
Pełny tekst źródłaRozprawy doktorskie na temat "Dispositifs à bas coût"
Rabobason, Yvon Georges. "Modélisation de système antennaire flexible à bas coût pour objets communicants non planaire". Rouen, 2016. http://www.theses.fr/2016ROUES060.
Pełny tekst źródłaFlexible electronics is currently considered as one of the technological solutions to face up to geometric constraints, lower cost and technological requirements. This emergence will ultimately drive the market for connected clothing, implanted electronics (in-body electronics). However, the flexible technology is not mature and has some issues that remain to lift as the choice of substrates both effective, environmentally friendly and at lower costs, modeling (analytic or digital) of a system or flexible subsystem, or the analysis of electromagnetic phenomena related to non-planar geometry. This manuscript presents the memory of my PhD thesis that focuses on the modeling of flexible antenna system for low-cost non-planar communicating objects. First, the different parameters such as the quality factor, antenna efficiencies, gain or bias, for evaluating the performance of an antenna are introduced. Subsequently, research work on flexible substrate based different antenna structures is presented. The main characteristics of flexible plastic substrates commonly used are addressed. The choice towards the substrates Kapton HN, as the best compromise cost-effectiveness robustness is justified. The influence of the antenna curvature constitutes the main object of the present PhD thesis. In this way, the study on the EM phenomena associated with the use of a flexible patch antenna structure is developed. Novel analytical formulas for assessing the antenna radiation efficiency in discrete curvatures scenarios are established. In addition, a methodology providing an analysis and modeling approach to passive and active 1×2 antenna arrays is presented and validated. Finally, two new structures of flexible high performance antennas in terms of bandwidth and radiation efficiencies are designed and implemented. The Kapton-based broadband structures are based on slots antenna topology with new matching adaptation technique by the use of lumped elements. The influence of the curvature on the slot antenna prototypes are analyzed and discussed
Nassar, Maxime. "Contre-mesures à bas coût contre les attaques physiques sur algorithmes cryptographiques implémentés sur FPGA Altera". Electronic Thesis or Diss., Paris, ENST, 2012. http://www.theses.fr/2012ENST0010.
Pełny tekst źródłaSide-Channel Analysis (SCA) and Fault Attacks (FA) are techniques to recover sensitive information in cryptographic systems by exploiting unintentional physical leakage, such as the power consumption. This thesis has two main goals: to draw a review of the state of the art of FPGA-compatible countermeasures against SCA and implement t the selected ones with the minimum area and performances overhead. Symmetrical algorithms, specially AES, are studied and several vulnerabilities of usual protections, namely Dual-rail with Precharge Logic (DPL) and masking are analysed, as well as the issue of performance and area overheads. In this context, three new countermeasures are considered: 1. Balance placement and routing (PAR) strategies aiming at enhancing existing DPLs robustness when implemented in modern FPGAs. 2. A new type of DPL called Balanced Cell-based Dual-railLogic (BCDL), to thwart most of the known DPL weaknesses. BCDL also possess a fault resilience mechanism and provides implementation optimisations on FPGA, achieving competitive performances and area overhead. 3. The Rotating S-Box Masking (RSM), a new masking technique for the AES that shows high leveles of robustness and performances while bringing a significant reduction of the area overhead. Finally, several new SCAs are presented and evaluated. Firstly the “Rank Corrector” a SCA enhancement algorithm. Secondly, The FPCA, introduces a novel SCA distinguisher based on the PCA. Then, combinations of either acquisition methods or SCA distinguishers are discussed and show significant decrease in the number of measurements required to perform a successful attack
Nassar, Maxime. "Contre-mesures à bas coût contre les attaques physiques sur algorithmes cryptographiques implémentés sur FPGA Altera". Phd thesis, Télécom ParisTech, 2012. http://pastel.archives-ouvertes.fr/pastel-00790669.
Pełny tekst źródłaHabis, Christelle. "Development of ZnO-FTO nanocomposites for the use in transparent conductive thin films". Electronic Thesis or Diss., Université de Lorraine, 2022. http://www.theses.fr/2022LORR0192.
Pełny tekst źródłaMy thesis work entitled “Development of ZnO-FTO nanocomposites for the use in transparent conductive thin films” is supervised by Professor Michel Aillerie at University of Lorraine. This work was mainly made at the “Laboratoire des Matériaux Optiques, Photoniques et Systèmes” LMOPS in Centrale Supélec, Metz. Although this work forms a whole in the elaboration of transparent conductive oxides, it is divided into two parts. The first part consists on identifying the properties of bulk materials (ZnO and FTO) deposited in the form of thin film. Whereas, the second part is about the elaboration and characterization of Zinc Oxide (ZnO) and Aluminum doped Zinc Oxide (AZO) nanofibers, then associated to FTO thin films to form nanocomposite. The main objective of this work is to make flexible electrodes using low cost and abundant material, but also improving the optical properties and more specifically the haze factor of the nanocomposite layers.Transparent conductive oxides (TCOs) are technologically significant class of materials extensively used in thin film solar cells due to their ability to transmit light and collect charge carriers. In addition to the fundamental qualities of transparency and conductivity, the TCOs are frequently desired to have a certain degree of surface roughness (i.e., texture) in order to effectively scatter transmitted light into the active materials, therefore lengthen the optical path and, as a result, enhance the performance of the cell and light absorption. This thesis focuses on the development of low-cost fabrication techniques for transparent oxide layers using non-polluting materials to enable the functionalization of operational devices with high efficiency for renewable energy production. The choice was made to study tin-based TCO layers doped with fluorine, F:SnO2, known as FTOs for "Fluor Tin Oxides". FTOs are wide band gap oxides, like ZnO, TiO2, Al2O3, pure or doped. In principle, these layers have a high scattering factor, as defined above, in order to improve the optical path and absorption. In addition, the optical texture of TCOs can be easily controlled by depositing suspensions of nanostructures before the film deposition. Generally, these nanostructures are nanoparticles or even carbon nanowires or metallic nanowires (silver, copper, ...) and more recently nanowires of TiO2 (presenting the disadvantage of the titanium element) or of undoped ZnO which unfortunately decrease the conductivity due to the increase of the interface resistance with the concentration of the nanoparticles.Therefore, we propose the study of FTO thin films, pure and also in the presence of ZnO and AZO nanofibers by electrospinning from a PVA-based solution in order to have a nanostructured layer with improved transparency and electrical conductivity properties to be integrated as transparent electrodes in photovoltaic cells, meeting the performance criteria defined above. With the characterization techniques available in the LMOPS laboratory and the University of Lorraine (SEM, Raman, EDX, DRX, UV-vis Spectro, ATG, AFM, profilometer) the growth will be followed by morphological and structural studies of the layers. Finally, electrical and optical properties, in particular absorption and scattering factor, will also be extensively investigated on selected layers with the best structural and morphological properties and the minimum of interface defects when deposited on a PV structure
Duval, Sébastien. "Constructions pour la cryptographie à bas coût". Electronic Thesis or Diss., Sorbonne université, 2018. http://www.theses.fr/2018SORUS078.
Pełny tekst źródłaThis thesis explores the construction of symmetric cryptography primitives. We reach better constructions than that of the literature, we a focus on the reduction of implementation costs. We study three types of primitives: block ciphers, which are the most commonly used in symmetric cryptography, a stream cipher designed for a specific application and a message authentication algorithm. We reduce the costs of the two main components of block ciphers: S-boxes and diffusion matrices. Feistel and MISTY-like structures appear to be a good choice to design secure S-boxes at a low cost, and lead us to new S-boxes with the best known trade-off between security and implementation cost. We also study the Butterfly structure which yields S-boxes with an excellent security. As for diffusion matrices, we develop an algorithm to look for formal matrices in a polynomial ring, then we instantiate its outputs to obtain matrices which are optimal in terms of diffusion at a lower cost than those of the literature. We also identify a weakness in the stream cipher FLIP, designed to fit some very specific cost constraints. We show that FLIP requires a different analysis than other stream ciphers and deduce from it an attack, which led to an update in FLIP to get a more resilient cipher. Finally, we study MAC algorithms, which are used to authenticate messages. Combining works from the literature, we build a MAC which is less costly than those used in practice with an equivalent security, aiming at an implementation on 32-bit micro-controllers
Bouhamri, Zine-Abidine. "Transmission multi-standards sur lien optique bas-coût". Phd thesis, Université de Grenoble, 2013. http://tel.archives-ouvertes.fr/tel-00957588.
Pełny tekst źródłaCoisel, Iwen. "Authentification et Anonymat à Bas-coût : Modélisations et Protocoles". Caen, 2009. http://www.theses.fr/2009CAEN2041.
Pełny tekst źródłaIn our daily life, security of many applications are based on cryptographic mechanisms. In some of them, privacy issues are a major concern. For example in internet context, a user expects the service provider not to divulgate his identity. In this thesis, I first give a formal definition of zero-knowledge proofs of knowledge (ZKPK), very useful for designing digital signatures. I prove the security of a generic construction of proofs of knowledge of discrete logarithm relations set. Then, I present state of the art of different signature schemes ensuring users' anonymity. Afterwards I adapt these protocols to the cooperative set-up, in which an intermediary helps the user perform some computations during the protocol. I also define a formal security model which is robust against corruption of the intermediary, while improving protocol efficiency. In the second part of this thesis, I present the security requirements for RFID tags authentication protocols. As these small embedded devices are potentially integrated into many various products, they must be intraceable so that nobody can trace their holder. As anonymity does not provide this property on its own, it must be included in the security model. Finally, I describe two authentication protocols which provide this security level. The first one uses a secret key infrastructure and a key update mechanism. The other one uses a public key infrastructure and an encryption algorithm
Coggia, Daniel. "Techniques de cryptanalyse dédiées au chiffrement à bas coût". Electronic Thesis or Diss., Sorbonne université, 2021. http://www.theses.fr/2021SORUS217.
Pełny tekst źródłaThis thesis contributes to the cryptanalysis effort needed to trust symmetric-key primitives like block-ciphers or pseudorandom generators. In particular, it studies a family of distinguishers based on subspace trails against SPN ciphers. This thesis also provides methods for modeling frequent cryptanalysis problems into MILP (Mixed-Integer Linear Programming) problems to allow cryptographers to benefit from the existence of very efficient MILP solvers. Finally, it presents techniques to analyze algebraic properties of symmetric-key primitives which could be useful to mount cube attacks
Lefranc, David. "Authentification asymétrique à bas coût et vérification assistée par ordinateur". Caen, 2005. http://www.theses.fr/2005CAEN2024.
Pełny tekst źródłaPassault, Grégoire. "Optimisation de la locomotion de robots bas coût à pattes". Thesis, Bordeaux, 2016. http://www.theses.fr/2016BORD0297/document.
Pełny tekst źródłaA promise of legged robots is being able walking on irregular or uneven floor. It is already used nowadays in education and entertainment applications. We introduce the Metabot platform, an open-source quadruped robot developped for education. This takes place in current technological context which allows, thanks to an access to fast prototyping and off-shelf components, building legged robots that were formerly only present in laboratories. This platform was used for teaching in secondary schools, allowing students to discover robotics, and especially programming. We then describe an environment designed to study legged robots locomotion, extending the expert controller designed for Metabot. We realized some physics simulation experiments and analyzed it to get a better understanding of the legged locomotion underlying rules. At last, we get a closer look at biped locomotion, for which stability problems arise. When developping our Sigmaban platform, a small-sized humanoid robot created to participate in RoboCup soccer, we designed foot pressure sensors that allow us to estimate the robot center of pressure. We exploit these sensors to improve the lateral stability on the robot, creating a closed-loop walk
Książki na temat "Dispositifs à bas coût"
Jacob, Steve. Institutionnaliser l'évaluation des politiques publiques: Étude comparée des dispositifs institutionnels en Belgique, en France, en Suisse et aux Pays-Bas. Bruxelles: P.I.E.-P. Lang, 2005.
Znajdź pełny tekst źródłaJacob, Steve. Institutionnaliser L'Evaluation Des Politiques Publiques: Etude Comparee Des Dispositifs En Belgique, En France, En Suisse Et Aux Pays-Bas (Cite Europeenne). Peter Lang Publishing, 2005.
Znajdź pełny tekst źródłaCzęści książek na temat "Dispositifs à bas coût"
GARSON, Cyrielle. "Les nouvelles modalités d’un continuum entre réel et virtuel sur la scène anglophone". W Performance dans les Amériques, 149–64. Editions des archives contemporaines, 2024. http://dx.doi.org/10.17184/eac.8121.
Pełny tekst źródłaStreszczenia konferencji na temat "Dispositifs à bas coût"
Ciotti, Marco, Jorge L. Manzano, Vladimir Kuznetsov, Galina Fesenko, Luisa Ferroni i Fabio Giannetti. "Scenario Analysis on the Benefits of Multi-National Cooperation for the Development of a Common Nuclear Energy System Based on PWR and LFR Fleets". W 2014 22nd International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/icone22-31012.
Pełny tekst źródłaRaporty organizacyjne na temat "Dispositifs à bas coût"
Meunier, Valérie, i Eric Marsden. Analyse coût-bénéfices: guide méthodologique. Fondation pour une culture de sécurité industrielle, grudzień 2009. http://dx.doi.org/10.57071/492acb.
Pełny tekst źródłaDufour, Quentin, David Pontille i Didier Torny. Contracter à l’heure de la publication en accès ouvert. Une analyse systématique des accords transformants. Ministère de l'enseignement supérieur et de la recherche, kwiecień 2021. http://dx.doi.org/10.52949/2.
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