Academic literature on the topic 'Stimuli de 2e ordre'
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Journal articles on the topic "Stimuli de 2e ordre"
Chen, Zhi, Shi-Chao Chen, Bo Li, Yong-An Yang, and Jing Zhang. "Synthesis and Evaluation of Glycyrrhetic Acid-aromatic Hybrids as Anti-inflammatory Agents." Medicinal Chemistry 16, no. 6 (September 7, 2020): 715–23. http://dx.doi.org/10.2174/1573406415666190603095502.
Full textHogmire, Henry W., and Tracy C. Leskey. "An Improved Trap for Monitoring Stink Bugs (Heteroptera: Pentatomidae) in Apple and Peach Orchards." Journal of Entomological Science 41, no. 1 (January 1, 2006): 9–21. http://dx.doi.org/10.18474/0749-8004-41.1.9.
Full textHartanto, Hartanto. "RTs across Dual Stimuli, Gender, GPA and Trialtype." Jurnal Psikologi 45, no. 1 (April 2, 2018). http://dx.doi.org/10.22146/jpsi.29671.
Full textDissertations / Theses on the topic "Stimuli de 2e ordre"
Isabel, Marc-André. "Estimation haute-résolution de la position de cibles en mouvement à partir du suivi du sous-espace sources et d'un estimateur statistique de 2e ordre." Master's thesis, Université Laval, 2018. http://hdl.handle.net/20.500.11794/40299.
Full textIn 1995, LIDAR systems emerged as a new alternative to the well-known RADAR systems for remote sensing applications. However, unlike RADAR, the operating frequency of LIDAR systems is above the radio frequencies and usually in the infrared which means that a non-coherent detection has to be used to retrieve the signal's enveloppe. While several signal processing algorithms have been developped for RADAR phased arrays, none of these algorithms are known, to this day, to be e cient when dealing with real, phaseless signals. In 2015, as part of a research project to enhance the detection precision and maximal distance of a LIDAR system, an adaptation [1] of the so-called MUSIC algorithm developped by Schmidt was realised to be used with the time-of- ight principle instead of the direction of arrival principle. Unfortunately, the direct application of the adapted algorithm was time consuming, especially the creation, processing and eigendecomposition stages of the ReXX matrix. As so, optimizations are required to allow its implementation into a low-cost system for real-time purposes. Among those optimizations, the use of subspace tracking methods will be studied in this thesis. Subspace tracking algorithms are based on the idea that instead of having to create ReXX at each data update, one can use the known data while adding the new data with a forgetting factor. The result of these optimizations is that a decrease of 25% to 95% in execution time is observed when subspace tracking is used together with a higher complexity method to initialize its parameters. The study realised by [1] was mostly done for stationary objects. This thesis aims to extend that study to non stationary objects. Results show that using subspace tracking methods is even more efficient in these cases.
Meis, Constantin. "Etude de l'effet Doppler du 2e ordre sur la transition hyperfine microonde à 40.5 GHz du niveau fondamental ²S¹/ des ions¹⁹⁹ Hg⁺ piégés dans une trappe radiofréquence." Grenoble 2 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb37616605d.
Full textMeis, Constantin. "Étude de l'effet doppler du 2e ordre sur la transition hyperfine micro-onde à 40,5 Ghz du niveau fondamental ²S½ des ions ¹⁹⁹ Hg⁺ piégés dans une trappe radiofréquence." Paris 11, 1988. http://www.theses.fr/1988PA112313.
Full textWe have studied the energy properties of 199Hg⁺ stored in an R. F. Cylindrical trap in order to evaluate the 2nd order Doppler effect on the resonance line at 40. 5 Ghz of the hyperfine transition of the fundamental level ²s ₁/₂. The purpose of this study, both experimental and theoretical, is to improve the precision of 199 mercury ions atomic frequency standard. Besides, we wanted to give a general caracter to the issued results so as they could be applied to all kinds of tons, with an hyperfine structure, stored in an R. F. Trap, quadrupole or cylindrical. We have established an analytical formalism, using physical parameters that can be measured experimentally, in order to estimate the mean kinetic energy of the stored ions, the 2nd order Doppler effect being directly proportional to this quantity. The mean kinetic energy calculated by this way takes into account the contribution of slow macromotion, supposed thermalized and that of rapid micromotion due to the confining field. We have assumed a thermalized charge density distribution in a confining pseudo potential taking also into account space charge affects. The above formalism also permits to evaluate the ion cloud central density as well as space charge potential. The results have been compared to those of numerical simulation methods for differents trapping conditions showing a very good agreement. We have then carried out a numerical study of the confinement properties of an R. F. Cylindritcal trop pseudo potential so as to adjust this formalism to our experimental conditions. We have thus demonstrated that the effective potentiel of such a trap is quite different to that of a quadrupole one. We have also defined the condition of an approximate sphericity and harmonicity of the pseudo potential as well as the value of the corresponding theoretical secular frequency. We have deduced that higher density (about 25 %) can be achieved in an R. F. Cylindrical trap than in a quadrupolar one for the same trapping parameters. The model has been applied to different experimental conditions measuring each time the necessary physical parameters which are the total ion number and the macromotion secular frequency shifted by space charge. We have concluded that the temperature of an ion cloud of 2. 10⁶ 199Hg+ ions trapped in a spherical pseudo potential of 40 khz is 3300 ± 100 k in a residual vacuum of 10⁻⁸ Torr. The 2nd order Doppler effect shift in this case is : Δ f ÷ f = -(5,44 ± 0,16) 10⁻¹². We have also studied the collisional cooling of an ion cloud for the same trapping conditions using helium buffer gas. At helium pressure of 3. 10⁻⁵ Torr we have measured a lower temperature of 700 ± 60 K. The corresponding 2nd order Doppler shift is: Δ f ÷ f = - (1. 76 ± 0. 11 à 10⁻¹²). Finally, we have put in evidence the weak distortion of the pseudo potential well of an R. F. Cylindrical trap due to the irregularities
Fevre, Raphaël. "L'ordolibéralisme (1932-1950) : une économie politique du pouvoir." Thesis, Paris 1, 2017. http://www.theses.fr/2017PA01E029.
Full textThis thesis retraces the intellectual history of ordoliberalism, focusing in particular on the works of Walter Eucken and Wilhelm Röpke, with references to the contributions of Franz Böhm, Alexander Rüstow, Leonhard Miksch and Friedrich Lutz. The main question it addresses is the following: how can we explain the fact that ordoliberal thought had the intellectual resources to weight on German post-war reconstruction? In order to answer it, it is necessary to provide a clear definition of ordoliberalism in its discursive context. First the thesis shows that ordoliberalism, in its epistemological (Chap. 1 ), theoretical (Chap. 2), ideological (Chap. 3) and political (Chap. 4) components, can be defined as a political economy of power, i. e. a form of economic knowledge, whose primary objective is to analyse the sources, the action and the impact of power within society; in other words, as a specific doctrine rather than a sub-species of (neo) liberalism. Secondly, the thesis illustrates how this identity played a positive role in promoting a form of political rationality in the post-war years in West Germany (Chap. 5), but also a negative one by excluding rival political programs, such as that of John Maynard Keynes (Chap. 6). Finally, the thesis investigates the ordoliberal discourse as a benchmark for German, and then European, economic policies: a persistence that went together with its radical transformation from the initial political economy of power, to the contemporary form of ordoliberal orthodoxy
Corbeil, Marie-Ève. "Perception de stimuli de 1er et 2e ordre chez des sujets ayant subi une privation sensorielle suite à des cataractes congénitales unilatérales ou bilatérales." Thèse, 2006. http://hdl.handle.net/1866/15815.
Full textGanivet, Amélie. "Étude de l'effet d'un traitement occlusif sur la perception de stimuli de premier et deuxième ordre chez des sujets amblyopes." Thèse, 2004. http://hdl.handle.net/1866/15014.
Full textChevrier, Éliane. "La perception du contraste de 1er et de 2e ordre chez des personnes atteintes de la maladie de Parkinson sous médication dopaminergique." Thèse, 2007. http://hdl.handle.net/1866/6340.
Full textBrosseau-Lachaine, Odile. "Évaluation de la perception visuelle chez le nourrisson et suite à un traumatisme craniocérébral léger chez l'enfant." Thèse, 2007. http://hdl.handle.net/1866/6351.
Full textPiponnier, Jean-Claude. "Impacts fonctionnels du traumatisme craniocérébral léger sur la vision et l'équilibre postural chez l'adulte." Thèse, 2015. http://hdl.handle.net/1866/13911.
Full textMild traumatic brain injury (mTBI) has complex effects on several brain functions that can be difficult to assess and follow-up. Visual and balance problems are frequently reported after an mTBI. Furthermore, these problems can still affect mTBI individuals far beyond the acute stage of injury. However, standard clinical assessments of vision and balance most often fail to objectivize these symptoms, especially if they are lingering. Moreover, to our knowledge, no longitudinal study investigated either mTBI-related deficits of visual perception per se, or mTBI-related balance deficits in adults. The aim of this project was to determine the nature and duration of the effects of such a traumatism on visual perception as well as on postural stability, by evaluating mTBI and control adults over a one-year period. Exactly the same subjects participated in both experiments, which took place on the same days for every subject. The impact of mTBI on the visual perception of sine-wave gratings defined by first-and second-order characteristics was, first, investigated. Fifteen adults diagnosed with mTBI were assessed at 15 days, 3 months and 12 months after injury. Fifteen matched controls followed the same testing schedule. Reaction times (RTs) for flicker detection and motion direction discrimination were measured. Stimulus contrast of first- and second-order patterns was equated to control for visibility, and correct-response RT means, standard deviations (SDs), medians, and interquartile ranges (IQRs) were calculated. The level of symptoms was also evaluated to compare it to RT data. In general in mTBI, RTs were longer and more variable (ie., larger SDs and IQRs), than those of controls. In addition, mTBI participants’ RTs to first-order stimuli were shorter than those to second-order stimuli, and more irregular for first- than for second-order stimuli in the motion condition. All these observations were made over the 3 sessions. The level of symptoms observed in mTBI was higher than that of control participants and this difference did also persist up to one year after the brain injury, despite an improvement. The second experiment, then, investigated the impact of mTBI on postural control. To achieve that, antero-posterior body sway amplitude (BSA) and postural instability (given by body sway velocity root mean square, vRMS) during upright stance, feet together, on a firm surface, were measured in five different conditions: with eyes closed and in a 3D virtual reality tunnel, either static or sinusoidally moving in the antero-posterior direction at 3 different velocities. Balance measures derived from clinical tests, Bruininks-Oseretsky Test of Motor Proficiency 2nd edition (BOT-2) and Balance Error Scoring System (BESS), were also used. Participants diagnosed with mTBI exhibited more postural instability (i.e. higher body sway vRMS) than control participants at 2 weeks and at 3 months post-injury, regardless of the testing condition. These mTBI-related balance deficits were no longer present one year postinjury. These results also suggest that visual processing impairments revealed in the first experiment might have contributed to mTBI-related balance deficits. Anteroposterior BSA as well as measures derived from clinical tests for balance assessment did not appear to be sensitive enough to quantify postural deficits of mTBI participants. The combination of RT measures with particular stimulus properties appeared to be a highly sensitive method for measuring mTBI-induced visuomotor anomalies, and to provide a fine probe of the underlying mechanisms when the brain is exposed to mild trauma. Likewise, postural instability measures prove to be sensitive enough for measuring mTBI-induced balance deficits. Developing screening tests in this respect intended for early post-mTBI use would be of interest. Also, studying relationships of such deficits with performance in daily life activities, such as school, work, or sports, is crucial in order to determine the functional impacts of these alterations in visuomotor and balance functions.
Books on the topic "Stimuli de 2e ordre"
Québec, Compagnie d'assurance du feu de. Extraits des minutes du comité nommé le 2e. mars, 1816: Publié par ordre du comité, pour l'instruction des proprietaires, Québec, le 20 avril, 1816. Québec: Imprimé par John Neilson ..., 1986.
Find full textPaolo, Marcellini, ed. Implicit partial differential equations. Boston: Birkhäuser, 1999.
Find full textV, Zhitarashu N., ed. Parabolic boundary value problems. Basel: Birkhäuser Verlag, 1998.
Find full textEidelman, Samuil D., and Nicolae V. Zhitarashu. Parabolic Boundary Value Problems (Operator Theory: Advances and Applications). Birkhauser, 1999.
Find full textBook chapters on the topic "Stimuli de 2e ordre"
"ORDRE, DÉSORDRE, SYSTÈME ET ORGANISATION." In Comprendre la complexité. Introduction à la Méthode d’Edgar Morin - 2e édition, 17–34. Presses de l'Université Laval, 2006. http://dx.doi.org/10.2307/j.ctv1qgnq21.7.
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