Auswahl der wissenschaftlichen Literatur zum Thema „Différence de direction d’arrivée“
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Zeitschriftenartikel zum Thema "Différence de direction d’arrivée"
Gueugniaud, P. Y., V. Baert, D. Hugenschmitt, H. Hubert und K. Tazarourte. „Impact de la Covid-19 sur les arrêts cardiaques extrahospitaliers en phase de suractivité épidémique : données du registre RéAC“. Annales françaises de médecine d’urgence 10, Nr. 6 (November 2020): 355–62. http://dx.doi.org/10.3166/afmu-2020-0289.
Der volle Inhalt der QuelleTchamen, Georges Williams, und Jérémie Gaucher. „Évaluation de l’incertitude due au modèle de représentation du réservoir dans les analyses de rupture de barrageLe présent ouvrage fait partie d’une série d’articles publiés dans ce numéro spécial consacré au génie hydrotechnique.“ Canadian Journal of Civil Engineering 37, Nr. 7 (Juli 2010): 980–90. http://dx.doi.org/10.1139/l10-034.
Der volle Inhalt der QuellePatai, Daphne. „Le regard d’ailleurs : les constructions utopiques de la « différence »“. Conférence de clôture 21, Nr. 2 (08.08.2007): 525–45. http://dx.doi.org/10.7202/027291ar.
Der volle Inhalt der QuelleCacouault-Bitaud, Marlaine, und Gilles Combaz. „Quelle mixité pour les « cadres » de l'Éducation nationale ?“ Diversité 165, Nr. 1 (2011): 138–43. http://dx.doi.org/10.3406/diver.2011.8039.
Der volle Inhalt der Quellede Oliveira, Érico Andrade M. „La genèse de la méthode cartésienne : la mathesis universalis et la rédaction de la quatrième des Règles pour la direction de l’esprit“. Dialogue 49, Nr. 2 (Juni 2010): 173–98. http://dx.doi.org/10.1017/s0012217310000235.
Der volle Inhalt der QuelleLalvée, Brigitte. „Jean-Jacques Rassial, Fanny Chevalier (sous la direction de). Genre et psychanalyse. La différence des sexes en question“. Figures de la psychanalyse 35, Nr. 1 (2018): 241. http://dx.doi.org/10.3917/fp.035.0241.
Der volle Inhalt der QuelleSheriff, Teresa. „La production d'enfants et la notion de " bien de l'enfant "“. Anthropologie et Sociétés 24, Nr. 2 (10.09.2003): 91–110. http://dx.doi.org/10.7202/015651ar.
Der volle Inhalt der QuelleHaché, Mario, Marc Durocher und Bernard Bobée. „Modélisation non paramétrique de la relation entre les caractéristiques du vent et la différence de niveaux sur un grand réservoir“. Canadian Journal of Civil Engineering 30, Nr. 4 (01.08.2003): 684–95. http://dx.doi.org/10.1139/l03-049.
Der volle Inhalt der QuelleProcoli, Angela. „Le travail " pur " des faiseuses d'adoption“. Anthropologie et Sociétés 24, Nr. 3 (10.09.2003): 133–53. http://dx.doi.org/10.7202/015675ar.
Der volle Inhalt der QuelleHankivsky, Olena, und Rita Kaur Dhamoon. „Which Genocide Matters the Most? An Intersectionality Analysis of the Canadian Museum of Human Rights“. Canadian Journal of Political Science 46, Nr. 4 (Dezember 2013): 899–920. http://dx.doi.org/10.1017/s000842391300111x.
Der volle Inhalt der QuelleDissertationen zum Thema "Différence de direction d’arrivée"
Le, Minh Hoang. „Various Positioning Algorithms based on Received Signal Strength and/or Time/Direction (Difference) of Arrival for 2D and 3D Scenarios“. Electronic Thesis or Diss., Sorbonne université, 2022. https://accesdistant.sorbonne-universite.fr/login?url=https://theses-intra.sorbonne-universite.fr/2022SORUS072.pdf.
Der volle Inhalt der QuelleLocalization has fascinated the researchers for centuries and has motivated a large amount of studies and developments in communications. The aim of positioning problems is to determine the position of the mobile device. Positioning algorithms can be divided into 3 methods: Trilateration, Multilateration and Triangulation. Trilateration utilizes the distances between the mobile device and all the base stations around to estimate the mobile position. These distances can be estimated via the Time of Arrival (ToA) or the Received Signal Strength (RSS). In Multilateration, the position location is based on measured quantities whose values are a function of the Time Difference of Arrival (TDoA) of the two ToAs. As for Triangulation, the directions of the incident signals play the most crucial role in the localization. Thus, it is also referred to as Direction-based Localization. The Direction of Arrival (DoA) of each incident wave is taken into account to solve the positioning problem. Each DoA is expressed by a single angle in 2D scenarios, and a pair of angles in 3D scenarios. There are noticeable differences between Network-Positioning and Self-Positioning. In Network-Positioning, the mobile device is directly localized based on the DoAs of the incident signals; meanwhile, in Self-Positioning, its position is estimated by the Direction Difference of Arrival (DDoA) between each pair of incident signals, because the DoA of each signal arriving to the Mobile Device is ambiguous. In this dissertation, we study all the localization approaches described above. Our spotlight is for Triangulation, which has many sub-scenarios to analyze. The results are obtained by MATLAB simulations
Bernoud-Belhoste, Nathalie. „Management interculturel en Inde : discours sur la différence et impact sur les relations de travail“. Paris, Institut d'études politiques, 2010. http://www.theses.fr/2010IEPP0039.
Der volle Inhalt der QuelleIn the Indian context, the hypermobility of the English-speaking educated workforce is a major concern for companies managed by French expatriates. The construction of cohesion and collaboration within these companies (local creation, small and medium companies or multinationals) is one key issue arising from this. The management of foreign companies abroad is often analysed using intercultural management theories, which emphasise the importance of the impact national culture has on the actors’ behaviour. This work shows that the actors use this concept in different ways in their narrative justifications. They address difference according to three processes (distinction, differentiation and distancing), in which they focus to varying degrees on national culture as expresed in their justifications. The expatriates’ representations of difference have an impact on the organisation, and more specifically on the human resources management practices within this particular professional context. The more national culture is mentioned in their justification, the less internal cohesion there is within the entity. The expatriate’s personal involvement, as well as their ability to create a unique project for the local company, is a key success factor which helps meet the challenges posed by this conjuncture
Aulanier, Florian. „Tomographie acoustique océanique en guide d'ondes : de l'utilisation des temps à celle des angles“. Thesis, Grenoble, 2013. http://www.theses.fr/2013GRENU031/document.
Der volle Inhalt der QuelleIn the ocean, temperature changes induce sound-speed perturbations. Ocean acoustic tomography uses the fluctuations of recorded acoustic signals, to map those sound-speed perturbations. To this end, sound-speed perturbations are classically related to the acoustic-wave travel-times measured on the records. This study suggests an alternative method to perform acoustic thermometry based on acoustic-wave propagation directions. It allows imaging a shallow-water waveguide (~100 m), at small scale (1 to 10 km), with high spatial resolution (10 m in range, 2 m in depth). In this context, wideband (~1.5 kHz) low frequency (~1 kHz) acoustic waves propagates along multiple paths similar to spatially « fat » geometrical rays. Using a pair of arrays (source/receiver) and the double-beamforming processing to separate acoustic signals coming from different paths and measure their: travel-time (TT), directions-of-arrival (DOA) and directions-of-departure (DOD). Under the hypothesis of small perturbations, TP, DOA and DOD variations are linearly related to sound-speed perturbations in an analytical way. This formulation based on Born's diffraction physics at the first order uses kernel functions called: the time-angle sensitivity kernels (T-A-SK). The T-A-SK model is then combined to classical inversion methods to retrieve sound-speed perturbations from TT, DOA and DOD variations. The methods developed here have been validated on simulated data, and applied on real small-scale data coming from the ultrasonic tank of the ISTerre, Grenoble
Sron, Seng thail. „Algorithmes intelligents de pilotages d'antennes reconfigurables à partir de données en bande de base pour la norme LTE“. Thesis, Limoges, 2015. http://www.theses.fr/2015LIMO0138.
Der volle Inhalt der QuelleThe development of modal antennas which are radiation pattern reconfigurable active antennas, but not arrays, started in order to implement beam forming in cellphones. This solution is generally made with an antenna array, which is very difficult, even impossible, in a mobile phone. Beam forming could improve the link budget and increase the data rate. The first aim of this thesis is the development of modal antennas for LTE standard. Three modal antennas concepts were presented. The first one is a reconfigurable “folded loop” active antenna by permutation of feed and ground points. The second one is a solution to gather the main and the diversity antenna in the bottom part of the phone, and to support MIMO and carrier aggregation, which are two features of LTE. The last one optimizes the use of the second antenna in LTE MIMO systems in order to perform beam forming. These modal antennas will provide their real potential only by being used by a driving algorithm which will choose the best mode or configuration according to the situation. So, the second aim of this thesis is the development of smart modal antenna driving algorithms. The first algorithm, developed and patented by Ethertronics, has the specificity to predict, at each moment, which mode will be the best for the next moment, by using baseband data for LTE. The second algorithm is deterministic and can estimate and track the direction of arrival of the signal. Then, it selects the mode which has the best gain in this direction in order to improve the link budget
Barbiero, Franck. „Antibrouillage de récepteur GNSS embarqué sur hélicoptère“. Thesis, Toulouse, ISAE, 2014. http://www.theses.fr/2014ESAE0052.
Der volle Inhalt der QuelleIn hostile environments, Global Navigation Satellite System (GNSS) can be disturbed by intentional jamming. Using antenna arrays, space-time adaptive algorithm (STAP) isone of the most efficient methods to deal with these threats. However, when a GNSS receiver is placed near rotating bodies, non-stationary effects called Rotor Blade Modulation (RBM) are created by the multipaths on the blades of the helicopter. They can degrade significantly the anti-jamming system and the signal of interest could belost. The work of the thesis is, consequently, to develop a GNSS protection system adapted to the RBM. In this way, an innovative multipath model, adapted to this phenomenon, has been developed. The model is then confirmed by comparison with a symptotic electromagnetic simulations and experiments conducted on an EC-120helicopter. Using a Maximum Likelihood algorithm, the parameters of the non-stationary part of the received signal have been estimated. And finally, the RBM anti-jamming solution, combining oblique projection algorithm and academic STAP, can mitigate dynamic and static contributions of interferences. In the end, the navigation information is available again
Boudjellal, Abdelouahab. „Contributions à la localisation et à la séparation de sources“. Thesis, Orléans, 2015. http://www.theses.fr/2015ORLE2063.
Der volle Inhalt der QuelleSignal detection, localization, and separation problems date back to the beginning of the twentieth century. Nowadays, this subject is still a hot topic receiving more and more attention, notably with the rapid growth of wireless communication systems that arose in the last two decades and it turns out that many challenging aspects remain poorly addressed by the available literature relative to this subject. This thesis deals with signal detection, localization using temporal or directional measurements, and separation of dependent source signals. The main objective is to make use of some available priors about the source signals such as sparsity, cyclo-stationarity, non-circularity, constant modulus, autoregressive structure or training sequences in a cooperative framework. The first part is devoted to the analysis of (i) signal’s time-of-arrival estimation using a new minimum error rate based detector, (ii) noise power estimation using an improved order-statistics estimator and (iii) side information impact on direction-of-arrival estimation accuracy and resolution. In the second part, the source separation problem is investigated at the light of different priors about the original sources. Three kinds of prior have been considered : (i) separation of constant modulus communication signals, (ii) separation of dependent source signals knowing their dependency structure and (iii) separation of dependent autoregressive sources knowing their autoregressive structure
Mateescu, Veronica. „Le management interculturel en Roumanie : le cas des investissements directs étrangers des PME étrangères“. Phd thesis, Université Paris-Est, 2008. http://tel.archives-ouvertes.fr/tel-00469057.
Der volle Inhalt der QuelleEl, Korso Mohammed Nabil. „Analyse de performances en traitement d'antenne : bornes inférieures de l'erreur quadratique moyenne et seuil de résolution limite“. Thesis, Paris 11, 2011. http://www.theses.fr/2011PA112074/document.
Der volle Inhalt der QuelleThis manuscript concerns the performance analysis in array signal processing. It can bedivided into two parts :- First, we present the study of some lower bounds on the mean square error related to the source localization in the near eld context. Using the Cramér-Rao bound, we investigate the mean square error of the maximum likelihood estimator w.r.t. the direction of arrivals in the so-called asymptotic area (i.e., for a high signal to noise ratio with a nite number of observations.) Then, using other bounds than the Cramér-Rao bound, we predict the threshold phenomena.- Secondly, we focus on the concept of the statistical resolution limit (i.e., the minimum distance between two closely spaced signals embedded in an additive noise that allows a correct resolvability/parameter estimation.) We de ne and derive the statistical resolution limit using the Cramér-Rao bound and the hypothesis test approaches for the mono-dimensional case. Then, we extend this concept to the multidimensional case. Finally, a generalized likelihood ratio test based framework for the multidimensional statistical resolution limit is given to assess the validity of the proposed extension
Komah, Djenêbou. „L'adaptation réciproque de la culture locale et du management en tant que création et partage de connaissances : le cas d'une filiale appartenant à un groupe français dans le domaine des NTIC (nouvelles technologies de l'information et de la communication) : Orange Mali“. Mémoire, 2011. http://www.archipel.uqam.ca/4280/1/M12229.pdf.
Der volle Inhalt der QuelleBücher zum Thema "Différence de direction d’arrivée"
illustrateur, Archambault Maxime, Hrsg. Direction Saint-Creux des Meuh-Meuh. Montréal (Québec) Canada: Québec Amérique, 2014.
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