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Статті в журналах з теми "Génération de signaux de test":
Pham, Van Ngoc, Danièle Boyer, Frédéric Perrier, and Jean-Louis Le Mouël. "Mécanismes de génération de bruits telluriques dans la bande ultrabasse fréquence (UBF) : sources possibles des signaux dits «signaux électro-sismiques » (SES)." Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science 333, no. 5 (September 2001): 255–62. http://dx.doi.org/10.1016/s1251-8050(01)01639-1.
D., Y. M. "Nouvelle génération pour un test tuberculose." Option/Bio 28, no. 565-566 (July 2017): 9. http://dx.doi.org/10.1016/s0992-5945(17)30162-9.
Espitia, O., and M. Fouassier. "Le test de génération de thrombine." La Revue de Médecine Interne 36, no. 10 (October 2015): 690–93. http://dx.doi.org/10.1016/j.revmed.2015.04.013.
Membré, Aurélie, Denis Wahl, Thomas Lecompte, and Véronique Regnault. "Test de génération de thrombine La thrombinographie: Méthodologie." Revue Francophone des Laboratoires 2007, no. 393 (June 2007): 37–43. http://dx.doi.org/10.1016/s1773-035x(07)80263-2.
N’Diaye, Marième. "« Génération crash test » : les doctorants face au RGPD." Critique internationale N° 100, no. 3 (September 1, 2023): 193–212. http://dx.doi.org/10.3917/crii.100.0193.
Thurin, N., R. Lassalle, P. Blin, M. Pénichon, M. Schuemie, J. J. Gagne, J. Rassen, et al. "Validation et calibration de l’approche cas–population dans le Sniiram en vue de la génération de signaux de pharmacovigilance : projet ALCAPONE." Revue d'Épidémiologie et de Santé Publique 65 (June 2017): S135. http://dx.doi.org/10.1016/j.respe.2017.04.050.
Berolo, O. "Frequency-shift keyed generation with an optically controlled GaAs field-effect transistor in a surface-acoustic-wave oscillator circuit." Canadian Journal of Physics 65, no. 8 (August 1, 1987): 929–36. http://dx.doi.org/10.1139/p87-146.
Reiter, Eric. "Mécanismes d’action et rôles multiples des β-arrestines dans la biologie des récepteurs couplés aux protéines G". Biologie Aujourd’hui 215, № 3-4 (2021): 107–18. http://dx.doi.org/10.1051/jbio/2021010.
Wamba, Henri, and Louise Tchamanbé-Djiné. "Information financière et politique d’offre de crédit bancaire aux PME : cas du Cameroun." Revue internationale P.M.E. 15, no. 1 (February 16, 2012): 87–114. http://dx.doi.org/10.7202/1008802ar.
Vernier, Philippe. "Test de lois interfaciales de génération de vapeur avec l'expérience Super Moby Dick." La Houille Blanche, no. 2 (March 1988): 121–27. http://dx.doi.org/10.1051/lhb/1988008.
Дисертації з теми "Génération de signaux de test":
Mamgain, Ankush. "Génération sur puce de signaux sinusoïdaux à hautes fréquences en utilisant des techniques d'annulation d'harmoniques." Electronic Thesis or Diss., Université Grenoble Alpes, 2024. http://www.theses.fr/2024GRALT024.
Built-in self-test (BIST) techniques play an important role in Analog, Mixed-signal, and RF (AMS-RF) circuits so that the yield in advanced nanometric processes can be improved. These circuits replace highly sophisticated and expensive AMS-RF testers. The stimuli generator is one of the important blocks in AMS-RF BIST circuits. In particular, many analog-RF tests require a high-quality sinusoidal signal as test stimuli. The focus of this thesis is to understand the challenges of generating a sinusoidal signal in GHz range and mitigating these challenges using the harmonic cancellation principle. In harmonic cancellation principle, a set of time-shifted periodic signals are scaled and added. In this process, harmonics of the periodic signal are cancelled and the fundamental frequency is retained at the output. Particularly in this case, a signal generator that can cancel the harmonics below the 11th harmonic. Despite its efficiency, this technique is highly susceptible to performance degradation due to mismatch and process variations. These variations affect time-shift and the duty cycle (also called timing inaccuracies) of the signal, particularly in high-frequency applications where precise control becomes increasingly challenging. To address this, a novel calibration architecture employs a coarse-fine delay cell mechanism, which effectively mitigates the impact of timing inaccuracies. One of the proposed solutions was fabricated using ST 28-nm FDSOI technology and validated. The measurement results show an SFDR greater than 60dBc for frequencies greater than 1 GHz after optimization, illustrating the potential of our architecture in enhancing the reliability and effectiveness of on-chip sinusoidal signal generation for AMS-RF integrated circuits
Asokan, Anu. "Signal Integrity - Aware Pattern Generation for Delay Testing." Thesis, Montpellier, 2015. http://www.theses.fr/2015MONTS206/document.
Advancing nanometer technology scaling enables higher integration on a single chip with minimal feature size. As a consequence, the effects of signal and power integrity issues such as crosstalk noise between interconnects, power supply noise and ground bounce in the supply networks significantly increases. Also, reliability issues are eventually introduced by variations in the manufacturing process. These issues will negatively impact the timing characteristics in an integrated circuit (IC), as they give rise to delay defects. Delay-related parametric failures increase the defect escape rate, yield loss and diminish reliability rate. Hence, design-for-test techniques are employed to have a better controllability and observability on the internal nodes to easily detect and locate the faults. However, they are not always detected by the traditional fault models. In our work, we target these challenges and propose novel physical design-aware path delay test methods to deal with delay faults coming from manufacturing defects or physical design issues. They include the investigation of path delay variations in the presence of crosstalk noise, power supply noise, ground bounce and process variations. Based on this, we develop technology independent test methods for identifying the test patterns that may cause a worst-case delay on a target path. Then, we develop a dedicated test pattern generation method for path delay testing in the presence of crosstalk noise, power supply noise and ground noise. The proposed methods can be used to characterize the path speed and it helps to address the speed binning problem. Also, they can be employed in improving the classical ATPG approach of pattern generation. The application of these contributions can bring tremendous improvements to the IC test quality by ensuring better defect coverage and for an increased manufacturing yield during speed binning of IC chips
Kervella, Gaël. "Circuits intégrés photoniques sur InP pour la génération de signaux hyperfréquences." Thesis, Rennes 1, 2016. http://www.theses.fr/2016REN1S008/document.
This thesis deals with the microwave photonics context. We have implemented various opto- electronic solutions in order to realize a monolithically integrated microwave synthesizer which has a low noise and a wide tunability until millimeter-wave frequencies. The synthesizer is based on the integration of two InP DFB lasers, an optical coupler and a fast photodiode. In addition, an electro-optic modulator is also implemented on the chip in order to transmit data on the generated carrier. The performances obtained in terms of tunability and wireless data transmission proved consistent with the objectives. Thus, a tuning range of 0-110 GHz and a short distance wireless data transmission rate of 1 Gbit /s have been demonstrated, establishing our system to the state of the art for this type of fully integrated component. Phase noise and linewidth performances have however been disappointing. To solve this problem affecting the data rate we have investigated two ways of stabilizing the carrier frequency. The first, based on an electronic feedback loop (OPLL) has yet proved unsuccessful but allowed us to further explore the related issues. However, the second solution, based on a new system of optical cross injection and stabilization to an external electronic oscillator has filled our wishes. Indeed, the stabilization of the carrier frequency by this technique has demonstrated linewidth less than 30 Hz and a reduced phase noise to -90 dBc / Hz at 10 kHz for a given carrier at 90 GHz. Next to the first generation components, a second generation was developed to improve the intrinsic performances of the chip by remedying the limitations previously observed. Thus, a new cavity configuration was designed including longer lasers and high reflectivity integrated mirrors made by materials deep etching. Moreover, optimization of the photodiode structure was carried out to further improve the bandwidth. Such a source allows to consider the generation and modulation of low phase noise and widely tunable microwave signals on monolithically integrated components matching the compactness, reproducibility and high speed performances required by the telecom, defense and space industries
Decrouez, Geoffrey. "Génération de signaux multifractals possédant une structure de branchement sous-jacente." Phd thesis, Grenoble INPG, 2009. http://www.theses.fr/2009INPG0002.
Fractal geometry, pioneered by Mandelbrot in the 70s, has been recognized in many areas of science. The novelty of this thesis is the generation of fractal and multifractal processes with underlying construction tree. I study two models in particular. The first one is a generalisation of Iterated Function Systems (IFS), introduced by Hutchinson in the early 80s. IFS are an efficient tool to generate fractal sets and functions, by iterating a given set of operators. The idea here is to allow a random number of random operators at each iteration of the algorithm. We derive simple conditions under which the IFS possesses a fixed point. A few properties of the fixed point are also investigated. The second model, called Multifractal Embedded Branching Process (MEBP), is obtained via a multifractal time change of a discrete self-similar process, the Canonical EBP (CEBP). We give an efficient simulation online algorithm which generates X(n+1) from X(n) in O(log n) steps. We also derive an upper bound of the multifractal spectrum of the time change and we confirm the theoretical results with simulations. Subordinated Brownian motions are particular cases of MEBP processes, which suggests a potential application of MEBP in finance. Finally, we propose to imitate a fractional Brownian motion with an MEBP
Decrouez, Geoffrey. "Génération de signaux multifractals possédant une structure de branchement sous-jacente." Phd thesis, Grenoble INPG, 2009. http://tel.archives-ouvertes.fr/tel-00353827.
Le premier modèle est une généralisation des Systèmes de fonctions Itérés ou IFS, introduits par Hutchinson dans les années 80. Les IFS constituent un moyen simple et efficace pour produire des ensembles et des processus fractals en itérant un nombre fixed d'opérateurs. L'idée est d'autoriser un nombre aléatoire d'opérateurs aléatoires à chaque itération de l'algorithme. Nous donnons des conditions simples et faciles à vérifier sous lesquelles l'IFS admet un point fixe. Quelques propriétés du point fixe sont également étudiées. Le deuxième modèle, que nous appellons Multifractal Embedded Branching Process (MEBP), s'obtient à l'aide d'un changement de temps multifractal d'un processus à invariance d'échelle discrète, le processus EBP Canonique (CEBP). Nous donnons un algorithm efficace de simulation "on-line" de ces processus, permettant de générer X(n + 1) à partir de X(n) en O(log n) opérations. Nous obtenons également un borne supérieure pour le spectre multifractal du changement de temps et confirmons les résultats théoriques à l'aide de simulations. Les mouvements Browniens en temps multifractal sont des cas particuliers des processus MEBP, ce qui suggère une application potentielle des processus MEBP en finance. Enfin, nous proposons d'imiter un mouvement Brownien fractionnaire à l'aide d'un processus MEBP.
Lelièvre, Oriane. "Oscillateurs optoélectroniques pour la génération de signaux microondes à grande pureté spectrale." Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLS061.
High purity microwave signal generation is required in various applications (RADAR systems, wideband sampling). For high frequency operations, optics offer promising solutions to generate low noise oscillators. The objective of this thesis consists in studying various optoelectronic oscillator (OEO) configurations at 10 GHz. We first worked on a phase noise model and its experimental validation, further extended to multiple loop OEOs. This comprehensive model allowed the design of a state-of-the-art dual loop OEO with consideration to its compactness (first spur located at 187 kHz from the carrier with a phase noise level of 146 dBc/Hz).We then focused on all photonic gain OEOs to get rid of RF amplifiers whose bandwidth and noise contributions are a limit for high frequency operations. Finally, we studied coupled optoelectronic oscillators (COEOs) which may simply be described as a combination of a mode locked laser and an OEO. We worked on a phase noise model for active and harmonically mode locked laser taking into account for the first time the non-orthogonality of the cavity modes. This model is the basis to a COEO model we began to develop. After experimentally determining key parameters, we designed and optimized a low noise COEO exhibiting a close-to-carrier phase noise similar to the state-of-the-art
Abdi, Abyaneh Mohammad. "Génération des signaux agrégés en fréquences dans le contexte de LTE-A." Electronic Thesis or Diss., Paris, ENST, 2016. https://pastel.hal.science/tel-03689710.
In this dissertation, a signal generation structure is proposed using which a multitone Local Oscillator (LO) signal is created by a single I/Q modulator. These LOs can be used in the CA receivers to down-convert the transmitted component carriers simultaneously. The multi-tone LO signal structure is further developed to be used at the transmitter as a CA generation solution. Using the proposed structure n-component carriers can be generated in parallel. This structures requires lower sampling rates with respect to the case where RF signals are synthesized directly by digital-to- analog converters. Moreover, less circuitry is required, because one single I/Q modulator is used to generate n component carriers, instead of n I/Q modulators. This work follows on investigating the origin of impairments and mild nonlinearities in our I/Q modulator. To overcome these problems, we focus on the functionality of the overall system rather than each component of the I/Q modulator. This method is called behavioral modeling. Once the nonlinear model is obtained, if its inverse function is applied to the input, a linearized output is expected. The generation of the inverse function is called Digital Pre-Distortion (DPD). We propose a tri-band behavioral model for nonlinearities and impairments in tri-band CA using our I/Q modulator. Furthermore, the DPD of the model is evaluated in simulations and experiments
Voon, Lew Yan, and Lew Fock Chong. "Contribution au test intégré déterministe : structures de génération de vecteurs de test." Montpellier 2, 1992. http://www.theses.fr/1992MON20035.
Damri, Laila. "Génération de séquences de test pour l'accélération d'assertions." Phd thesis, Université de Grenoble, 2012. http://tel.archives-ouvertes.fr/tel-00838669.
Martiel, Jean-Louis. "Étude par un modèle de la génération périodique des signaux chimiotactiques chez dictyostelium discoideum." Habilitation à diriger des recherches, Université Paris Sud - Paris XI, 1988. http://tel.archives-ouvertes.fr/tel-00328959.
Книги з теми "Génération de signaux de test":
Baker, Mark. Demystifying mixed-signal test methods. Amsterdam: Newnes, 2003.
Test No. 240: Étude étendue de toxicité pour la reproduction sur une génération chez médaka (MEOGRT). OECD, 2015. http://dx.doi.org/10.1787/9789264242319-fr.
Hare, Brian, and Vanessa Woods. Cognitive comparisons of genus Pan support bonobo self-domestication. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198728511.003.0015.