Academic literature on the topic 'Onde interne'

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Journal articles on the topic "Onde interne"

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Guizien, Katell, and Éric Barthélemy. "Modulations d'amplitude dans l'interaction onde solitaire interne-houle. Expériences." Comptes Rendus de l'Académie des Sciences - Series IIB - Mechanics-Physics-Astronomy 327, no. 13 (1999): 1325–30. http://dx.doi.org/10.1016/s1287-4620(99)90009-1.

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Alvarez, Clara Luz. "TV Móvel: onde estamos e para onde vamos." Law, State and Telecommunications Review 2, no. 1 (2010): 45–66. http://dx.doi.org/10.26512/lstr.v2i1.21683.

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O artigo apresenta (1) as características técnicas da TV Móvel [Mobile TV] e sua diferença para o IPTV e a TV pela Internet [Internet TV], (2) as questões relativas a rede, espectro e equipamento que influenciarão o arcabouço normativo, (3) as oportunidades geradas para a TV Móvel quando da migração para a TV digital, e (4) um estudo de caso do México pertinente ao marco regulatório dos serviços de telecomunicações e de radiodifusão, aos atores do mercado, à disponibilidade de espectro, à migração para a TV digital e outras questões proeminentes para a TV Móvel.
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Leal, Kivya Santos, Natália Ferreira Izidoro, and Fernando Takeo Harano. "AUDITORIA INTERNA NA PREVENÇÃO DE IRREGULARIDADES TRABALHISTAS." Organizações e Sociedade 7, no. 7 (2018): 86. http://dx.doi.org/10.29031/ros.v7i7.332.

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A auditoria interna é um plano de ação em uma organização, onde ela observa, questiona e avalia o controle interno, a fim de conseguir atingir seus objetivos e ter um controle administrativo de acordo com o estatuto ou contrato da empresa. Este trabalho tem como objetivo principal explorar e conhecer o funcionamento da auditoria interna na prevenção de irregularidades trabalhistas, mais precisamente no departamento pessoal, visando evitar a ocorrência de fraudes e erros dentro de uma organização. Foram identificadas as etapas da auditoria interna na verificação da veracidade dos fatos dentro do departamento pessoal de uma entidade. Os pontos de verificação foram cálculos de folha de pagamento, rescisão, admissão, livro de registro, contrato e jornada de trabalho. O resultado final de uma auditoria é entregue para a alta administração da empresa, com pontos de verificação para a solução dos mesmos. O trabalho tem como metodologia a pesquisa bibliográfica, foram utilizados livros, pesquisa na internet com o uso de sites confiáveis, artigos prontos, revistas e boletins.
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Pereira, Miriane Cristina. "ABRANGÊNCIA MÍNIMA DOS TRABALHOS DE AUDITORIA INTERNA EM EMPRESAS DO VAREJO." Revista de Administração e Negócios da Amazônia 10, no. 2 (2018): 20. http://dx.doi.org/10.18361/2176-8366/rara.v10n2p20-34.

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O presente estudo busca identificar os campos de atuação e o papel da auditoria interna em empresas varejistas, demonstrando assim, através da coleta das informações de profissionais de auditoria que atuam em empresas do varejo, quais as ferramentas, métodos, áreas auditáveis e o escopo dos trabalhos que uma área de auditoria interna deverá realizar dentro das entidades onde atuam. O estudo demonstra que o auditor interno necessita ter conhecimentos multidisciplinares, além do próprio negócio onde a empresa está inserida, sempre deverá atuar avaliando a relação dos benefícios dos controles e das medidas adotadas em relação aos custos de implanta-las. A visão de se buscar fazer mais e cada vez melhor e com menos recursos, também, é imprescindível. É importante ressaltar que a auditoria interna, por ser um órgão de assessoria e não de linha, a coloca em risco por ocasiões de cortes e reduções de gastos nas empresas, por isso, se faz necessário que o auditor interno saiba realizar seu marketing pessoal mostrando assim que os ganhos trazidos pelo seu trabalho superam os gastos com as manutenção do departamento de auditoria interna, justificando sua manutenção e até de investimentos na citada área. Palavras-chave: Comércio. Varejo. Atacado. Auditoria.
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Soares, Dwight Rodrigues. "ASPECTOS TÉCNICOS DA LAVRA DO PEGMATITO “ALTO” FEIO, PEDRA LAVRADA, PARAÍBA." HOLOS 1 (February 15, 2016): 404. http://dx.doi.org/10.15628/holos.2016.3248.

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A Província Pegmatítica da Borborema (PPB) notabilizou-se ao final da II Guerra Mundial por ser importante fonte de Nb-Ta e Be para os países aliados. Nessa época de intensa produção de bens minerais definiu-se, pioneiramente, a estrutura interna de pegmatitos graníticos. A partir do entendimento da estrutura interna foi possível determinar métodos de lavra para pegmatitos da região. Normalmente nos pegmatitos homogêneos (sem zoneamento interno e de pequenas dimensões) realiza-se a extração total do corpo. Nos pegmatitos heterogêneos (com zoneamento interno – zonas I, II, III e IV) geralmente extrai-se a zona III (unidade onde ocorrem minerais econômicos). O Pegmatito Alto Feio, localizado em Pedra Lavrada, Paraíba, é um pegmatito diferenciado com grande núcleo (zona IV) de quartzo róseo de excelente qualidade. Por esse motivo a lavra ocorre nas zonas III e IV.
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Kirkpatrick, Scott. "Once the Internet can measure itself." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 374, no. 2062 (2016): 20140437. http://dx.doi.org/10.1098/rsta.2014.0437.

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In communications, the obstacle to high bandwidth and reliable transmission is usually the interconnections, not the links. Nowhere is this more evident than on the Internet, where broadband connections to homes, offices and now mobile smart phones are a frequent source of frustration, and the interconnections between the roughly 50 000 subnetworks (autonomous systems or ASes) from which it is formed, even more so. The structure of the AS graph that is formed by these interconnections is unspecified, undocumented and only guessed-at through measurement, but it shows surprising efficiencies. Under recent pressures for network neutrality and openness or ‘transparency’, operators, several classes of users and regulatory bodies have a good chance of realizing these efficiencies, but they need improved measurement technology to manage this under continued growth. A long-standing vision, an Internet that measures itself, in which every intelligent port takes a part in monitoring, can make this possible and may now be within reach.
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Marzionna, Paulo. "A OUVIDORIA INTERNA NO BRASIL: ONDE ESTAMOS, O QUE DESEJAMOS." Revista Científica da Associação Brasileira de Ouvidores/Ombudsman (ABO) 3, no. 1 (2020): 35–44. http://dx.doi.org/10.37814/2594-5068.2020v3.p35-44.

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Kelly, Cate, Craig L. F. Noonan, and John P. Monagle. "Preparedness for internship: a survey of new interns in a large Victorian Health Service." Australian Health Review 35, no. 2 (2011): 146. http://dx.doi.org/10.1071/ah10885.

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Objective. To gain better understanding of the work-preparedness of new interns and identify areas where further training and education should be provided. Design. Surveys of new interns assessing self-reported confidence and preparedness for tasks commonly undertaken without direct supervision. The first survey was undertaken before the cohort had started work, the second once they had completed their second intern rotation. Setting. A large metropolitan Victorian health service. Participants. All interns starting in 2009 at Southern Health. Of the total 66 interns, 52 (84%) completed the first survey and 37 (56%) completed the second. Main outcome measure(s). Self-reported confidence and preparedness for common intern tasks. Results. The surveys identified tasks that interns undertake frequently, their preparedness for these and their confidence in completing them. Although most felt reasonably well prepared by their university training for many tasks they commonly undertake as interns, this was not the case for all tasks. In particular, they did not feel well prepared for the following: preoperative patient review, handover, fluid and medication management, patient admissions, assessment of unstable patients, communication with patients and families, and pain management. Conclusions. There are particular domains of work-readiness for interns that could be improved. For best results, the training of interns in these common tasks should be undertaken jointly by hospitals and universities to ensure smooth transition from medical student to intern. What is known about the topic?Transition from student to intern requires a range of skills and attributes. Previous publications have demonstrated a link between the number of times a procedural task has been completed by junior medical staff and confidence in completion. What does this paper add?This paper documents interns' own views about the tasks commonly undertaken during internship, and their views on how well they were prepared for these tasks by university training and organisational orientation. It considers non-procedural tasks (such as communication and escalation) as well as common intern procedures. It also documents the intern hopes and concerns regarding internship immediately pre-employment and after 20 weeks of employment. What are the implications for practitioners?Later-year university training experiences and organisational orientation planning should at least in part be geared by the requirements for work-readiness at intern level.
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Butt, Amy, Jordanna Clarfield-Henry, Loan Bui, Kim Butler, and Cynthia Peterson. "Use of Radiographic Imaging Protocols by Canadian Memorial Chiropractic College Interns." Journal of Chiropractic Education 21, no. 2 (2007): 144–52. http://dx.doi.org/10.7899/1042-5055-21.2.144.

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Objectives: The purpose of this study was to determine if 4th-year interns plan to x-ray their patients, once they are in private practice, in accordance with the principles taught throughout their radiology program and with the evidence-based imaging guidelines outlined in the literature. Methods: Questionnaires were provided to all 4th-year interns. Each questionnaire consisted of 10 case scenarios representing possible chiropractic patients. Each intern was asked if he or she would radiograph the patient and, if so, which views would be taken. A “gold standard” was established by two chiropractic radiologists using evidence-based guidelines. Intern answers were compared with the gold standard using percent agreement. Results: Sixty-eight interns completed the questionnaire. Agreement between the interns and the gold standards for the question of whether or not they would take x-rays ranged from 63.2% to 100%. The percent agreement for the correct radiographic views chosen ranged from 32.6% to 48.4%. Conclusion: Interns are generally aware of and plan to apply the radiographic guidelines for determining whether or not radiographs are indicated, as outlined in the current literature. However, interns are inconsistent in choosing the correct views.
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Bandini, Bárbara. "INPLANTA." Interagir: pensando a extensão 1, no. 26 (2019): 38–47. http://dx.doi.org/10.12957/interag.2018.39667.

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Resumo: O artigo apresenta a obra visual INPLANTA (2018) a partir de uma abordagem crítica ao crime de feminicídio em nossa sociedade, utilizando relatos e arcabouço teórico sobre o tema. Apoiando-se em concepções de Engels ,no livro A Origem Da Família, Da Propriedade Privada E Do Estado (1975) sobre a mudança do direito materno para o paterno, ou seja, do início do acúmulo de riquezas onde a mulher passa a ser considerada propriedade privada do homem, o artigo faz uma breve crítica à sociedade patriarcal e trata das proposições sobre o feminismo, finalizando com um manifesto pela vida.
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Dissertations / Theses on the topic "Onde interne"

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Lerisson, Gaétan. "Stabilité d'une onde de gravité interne, analyse locale, globale et croissance transitoire." Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLX017/document.

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Dans les océans profonds linéairement stratifiés, la déstabilisation des ondes de gravité internes est importante car elle contribue probablement au mélange turbulent et à la circulation thermohaline.À l'aide de simulations numériques directes, nous créons un faisceau d'onde interne progressive. Cette situation est équivalente à une onde produite par l'oscillation de la marée sur une topographie sous-marine. Nous retrouvons les résultats expérimentaux obtenus par cite{Bourget13} : le faisceau se déstabilise en un mode petite échelle. Nous regardons l'effet d'un écoulement horizontal moyen sur cette instabilité en prenant soin d'abaisser la fréquence de forçage afin de compenser l'effet doppler et de conserver localement la même onde. Un cas limite apparaît lorsque le forçage devient stationnaire, ce qui équivaut à une onde de sillage issue d'un écoulement constant au dessus d'une topographie.Les écoulements à petite vitesse voient une instabilité petite échelle similaire au cas marée alors que les écoulement intermédiaires restent stables. Les écoulements plus rapides (jusqu'au cas sillage) voient, par contre, une instabilité bien plus grande échelle que celle dans le cas marée. Cette sélection d'échelle est robuste aux variations du nombre de Froude, de Reynolds, de la taille du faisceau ou de l'angle de l'onde.Nous montrons que ces instabilités peuvent être décrites comme des triades résonantes et que les différentes échelles correspondent à différentes branches triadiques. Nous confirmons la présence de cas stables pour des vitesses intermédiaires en calculant les modes propres comme des modes de Floquet à l'aide d'un algorithme d'Arnoldi--Krylov, et en montrant qu'ils sont associés à des taux de croissance négatifs.Le cas sillage est instable et nous le stabilisons par une méthode deselective frequency damping cite{Akervik06} afin d'obtenir un écoulement de base stationnaire autour duquel nous calculons les perturbations optimales qui maximisent l'énergie totale à différents horizons temporels. Pour des horizons courts, la perturbation optimale est petite échelle alors que pour des horizons longs, elle est grande échelle et converge vers la solution non-linéaire obtenue précédemment. Les horizons courts voient une instabilité triadique petite échelle advectée par l'écoulement et les horizons longs développent une instabilité d'une branche triadique grande échelle capable de se maintenir dans le faisceau malgré l'écoulement.Nous interprétons cette sélection de mode par le biais de la théorie des instabilités absolue ou convective. Dans le cas de l'onde de sillage l'instabilité grande échelle est absolue alors que la petite échelle est convective (et domine la croissance transitoire puisque son taux de croissance local est supérieur). Les rôles s'inversent dans le cas marée et l'instabilité petit échelle devient absolue alors que la grande échelle est convective. Nous confirmons cette hypothèse en calculant la réponse impulsionnelle d'une onde plane monochromatique dans un domaine 2Dpériodique. L'évolution spatio-temporelle d'une perturbation localisée en temps et en espace montre la formation de trois paquets d'onde, chacun étant associé à une branche triadique que nous identifions par une extension de la théorie triadique prenant en compte un désaccordage cite{McEwan77} et permettant de calculer la vitesse de groupe des sommets des paquets. En calculant ensuite le taux de croissance absolu le long de rayons à x/t et z/t constant, nous validons notre hypothèse<br>Internal gravity waves that exist in a continuously stratified fluid are particularly important in the ocean. They transport energy and are thought to generate turbulent mixing, which contribute to the deep ocean circulation.We generate an internal wave beam that propagates in a continuously stratified fluid with direct numerical simulations. This situation is equivalent to a tidal wave, where the tidal flow oscillates over a topography and generates a wave. Experimental results obtained by cite{Bourget13} are recovered, ie. the beam destabilizes into a small scale mode. We consider the effect of an horizontal mean flow on the instability and lower the forcing frequency in order to compensate for the doppler effect and to keep locally the same wave. A limit case appears when the forcing becomes stationary. This case is equivalent to a lee wave appearing when a stratified fluid flows over a topography.For small mean flow, small scale instabilities develop as in the tidal case. The beam then stabilizes at intermediate mean flows and destabilizes again for increasing flow speed. At this second threshold, down to the lee wave case, the instability is of much larger scale than for the tidal case. Varying the Reynolds number, the Froude number, the wave angle or the beam size doesn't affect the instability scale selection : a small scale instability in the tidal regime, and large scale instability in the lee regime.We show that the instability mechanism may be interpreted using the triadic instability. Scale selection corresponds to different branches of triadic resonance. We confirm the presence of a stability region for intermediate value of the mean advection velocity by computing the linear eigenmode as Floquet mode with an Arnoldi-Krylov technique and show that the leading eigenmode has a negative growth rate.In the lee wave, case the flow is unstable and a selective frequency damping method cite{Akervik06} is used to compute a steady base flow. We then implement a linear direct-adjoint method to compute the optimal perturbations that maximizes the total energy at different time horizons. At short time horizon, the optimal perturbation is small scale while at large time the perturbation switches to a large scale solution and converges to the large scale mode observed through the nonlinear simulations. Short time transients correspond to the small scale triadic instability advected by the flow whereas the long time large scale instability corresponds to large scale branch of the triadic instability that is able to sustain the flow.We propose an interpretation of the selection of these different instabilities in term of absolute and convective instability. In the case of the lee wave, the large scale instability is absolute whereas the small scale instability is convective (and dominates the short time transient growth because it has a larger local growth rate). When the mean flow is varied, the properties of small scale and large scale instabilities exchange: in the tidal case the short scale instability is absolute and the large scale convective. This conjecture is confirmed by computing the impulse response around a plane monochromatic internal gravity wave in an extended two dimensional periodic domain. The spatio temporal evolution of a perturbation localized in space and time points out the formation of three different wave packets corresponding to different branches of triadic instability. Using the triadic theory with finite detuning cite{McEwan77},we derive the group velocity at the maximum growth rate of the three different branches of triadic instability and find a good agreement with the velocity of the three wave paquet maxima in the impulse response. Analyzing the impulse response along rays, i.e. at x/t and z/tconstant, we compute the absolute growth rate along all possible rays and validate our conjecture
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Barthélémy, Eric. "Etude des ondes longues internes et de leur dynamique dans les zones côtières." Grenoble 1, 1989. http://www.theses.fr/1989GRE10002.

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La theorie des ondes longues en eau peu profonde est utilisee pour calculer plusieurs equations decrivant les ondes internes en fluide stratifie. On reformule l'equation de kdv et on calcule l'equation des ondes longues d'interface a fortes courbures. Une revue de synthese des etudes sur la generation des ondes internes par le passage de la maree sur le talus continental introduit notre etude theorique: les methodes de l'eau peu profonde generalisee nous permettent le calcul des ondes baroclines et barotropes, reflechies ou transmises lors de l'interaction de la maree avec le talus vertical. Nous etudions ensuite les ondes longues internes de grandes amplitudes. On etablit le role des conditions dites critiques sur l'existence d'ondes solitaires. Enfin on montre qu'en presence de courants moyens les caracteristiques (longueur d'onde, celerite,. . . ) des ondes longues d'interface sont qualitativement modifiees
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Vautard, Robert. "Les echelles de temps de la circulation atmospherique : couplage interne et approches de la parametrisation des modes rapides." Paris 6, 1987. http://www.theses.fr/1987PA066657.

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Les interactions entre les modes lents et les modes rapides de la circulation atmospherique sont examinees a travers deux problemes. Le premier concerne le couplage entre les ondes de gravite et les ondes de rossby. En raison des erreurs d'observation, les modeles de prevision numerique engendrent des ondes de gravite rapides irrealistes. Ces modes doivent donc etre initialement filtres. Le probleme est aborde de maniere theorique par l'etude de l'existence et des proprietes d'une variete invariante de l'espace des phases, appelee "variete lente", qui est sensee contenir l'attracteur du systeme atmospherique. Nous montrons au moyen d'exemples et de theoremes mathematiques qu'une telle variete peut exister, mais que les algorithmes actuels ne convergent pas vers elle. Le deuxieme probleme concerne la generation de la variabilite basse-frequence de l'atmosphere. Nous montrons que la dynamique lente de grande echelle est largement gouvernee par le forcage qu'induisent les transitoires rapides de petite echelle. L'existence de plusieurs structures de grande echelle associees a des regimes de temps, maintenues par les ondes baroclines rapides venant se superposer, est demontree dans le cadre d'un modele quasi-geostrophique. L'alternance entre ces regimes contribue a l'essentiel de la variabilite basse-frequence aux latitudes temperees. Cette notion de "regime de temps", jusqu'ici definie de maniere vague, est abordee de facon quantitative et objective au moyen d'une methode variationnelle statistico-dynamique. Celle-ci permet la reconnaissance de plusieurs types de circulation persistante dont l'une constitue le phenomene de "blocage". Dans ce phenomene, nous montrons que les transitoires ont un effet positif et important pour le maintien de la structure de l'anomalie
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Roussel, Corentin. "Modelisation et simulation de l'interaction onde de choc/couche limite turbulente en écoulement interne avec effets de coins." Thesis, Paris, ENSAM, 2016. http://www.theses.fr/2016ENAM0025/document.

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Afin de concevoir des systèmes de propulsion innovants, l'amélioration des performances des prises d'air supersonique constitue un enjeu majeur. En particulier, les écoulements intervenant au sein des entrées d'air et/ou de diffuseurs supersoniques mettent en jeu des phénomènes complexes associés aux diverses échelles spatiales et temporelles: dynamique de la turbulence pariétale, interaction entre une onde de choc et une couche limite turbulente, décollements tridimensionnels et effets de coins. Malgré les contributions significatives et récentes des simulations numériques de haute fidélité sur les instationnarités de l'interaction onde de choc/couche limite sans paroi latérales, peu d'études numériques ont été menées sur l'influence des coins dans la dynamique de l'écoulement. En présence de parois latérales et à des nombres de Mach suffisamment élevés, l’interaction se modifie et un train de choc se forme dans le diffuseur. Dans le cadre de cette thèse, les équations de Navier-Stokes en régime compressible sont résolues à l'aide de schémas d'ordre élevé. Des simulations en régime supersonique de l'écoulement dans des diffuseurs rectangulaires de largeurs différentes sont effectuées. L'étude permet la mise en évidence de l'influence du confinement et des effets de coins. Une deuxième partie de l’étude est consacrée à la compréhension des instationnarités générées par un train de choc dans un diffuseur rectangulaire à l'aide d'outils de post-traitement avancés: décomposition modale dynamique et périodogramme. Les résultats montrent la présence d'un possible phénomène de résonance du diffuseur à des fréquences proches de celles émises par l'écoulement<br>To design innovative propulsion systems, improving the performance of supersonic air intakes is a major issue. In particular, the flows through the air intakes and/or supersonic diffusers involve complex unsteady phenomena associated with various spatial and temporal scales such as: wall-bounded turbulence dynamics, interaction between a shock-wave and a turbulent boundary layer, three-dimensional separated flows and corners effects. Despite the significant contributions from recent high-fidelity simulations of unsteady shock-wave boundary layer interaction in the absence of side walls, few numerical studies were conducted with secondary flows due to corner effects. In the presence of side walls and at Mach numbers large enough, the topology of the interaction is modified and a shock-train forms in the diffuser. In this thesis, the Navier-Stokes compressible equations are solved using high-order schemes. Simulations of supersonic flows in rectangular diffusers of different widths are carried out. The study allows to highlight the influence of confinement and corners effects on the mean flow. A second part of the study is devoted to the understanding of the unsteadiness associated with a shock-train in a rectangular supersonic diffuser. For that purpose, advanced post-processing tools have been developed such as: dynamic mode decomposition and Fourier analysis. The results show the presence of a possible resonance phenomenon in the diffuser at frequencies close to those associated with the flow
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Guizien, Katell. "Les ondes longues internes : génération et interaction avec la houle." Université Joseph Fourier (Grenoble), 1998. http://www.theses.fr/1998GRE10227.

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L'activite economique maritime s'etant eloignee de la cote pour se rapprocher du bord du talus continental, les exploitants se trouvent confrontes a des mouvements baroclines qui peuvent etre de grandes amplitudes, les ondes longues internes. Dans ce memoire, on presente donc deux aspects concernant les ondes longues internes. Dans une premiere partie, la generation des ces ondes lors de l'interaction de la maree externe avec le talus continental a ete etudie. Il a ete montre grace a un modele lineaire d'ondes longues en bi-couche que l'incidence oblique de la maree ainsi que la rotation terrestre n'etaient pas a negliger. Le modele a ete valide en le comparant a des mesures in-situ realisees sur le malin shelf (ecosse). Dans la seconde partie, nous nous sommes interesses a l'interaction de ces ondes longues internes avec la houle de surface. En effet, sur les images sar, on peut observer la signature des ondes internes laissee en surface. Une premiere etude experimentale d'interaction entre une onde solitaire de surface et une onde courte monochromatique barotrope a ete menee simulant la difference d'echelle existant entre une onde longue interne et des vagues de vent. Des dephasages importants de l'onde courte ont ete mesures, en bon accord avec ceux predits par un modele theorique utilisant la technique wkb egalement presente dans ce memoire. Ce modele a aussi conduit a estimer les modulations d'amplitude de l'onde courte a travers la conservation de l'action d'onde mais ce point n'a pu etre teste experimentalement. Enfin, des experiences d'interaction entre une onde solitaire interne et une onde courte externe ont ete menees en milieu stratifie. Les modulations de la phase se sont averees trop faibles pour etre mesurees, et celles de l'amplitude ne sont pas decrites par la conservation de l'action d'onde etablie theoriquement pour le cas de la premiere serie d'experiences.
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Bauge, Jean-Christophe. "Étude de l'oxydation de composés insaturés en réacteur parfaitement agité et en tube à onde de choc." Vandoeuvre-les-Nancy, INPL, 1998. http://www.theses.fr/1998INPL017N.

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Ce travail s'inscrit dans le cadre d'une meilleure compréhension des mécanismes réactionnels liés à la combustion anormale dans les moteurs à allumage commandé (cliquetis) et à la formation de polluants émis à l'échappement des moteurs diesel (polyaromatiques, suies). L’oxydation de l'isobutène (responsable de l'effet anti-détonant des éthers ajoutés dans les essences) a été étudiée sur deux appareillages complémentaires afin de couvrir un vaste domaine de température. Le réacteur auto-agité par jets gazeux a permis une étude à température modérée (< 640C°), avec identification et analyse quantitative des produits formés par chromatographie en phase gazeuse. Le tube à onde de choc développé récemment au laboratoire a permis une étude à haute température (> 1200C°) par la mesure de délais d'auto-inflammation de mélanges isobutène-oxygène-argon. Un mécanisme réactionnel de 136 réactions a été proposé et validé à l'aide de simulations. L’analyse de ce mécanisme nous a permis de corroborer des résultats déjà publiès sur le caractère inhibiteur de l'isobutène et d'expliquer l'allure auto-accélérée des courbes de consommation des réactifs. L'étude de l'oxydation de quatre précurseurs des suies (l'acetylène, le propyne, l'allène et le 1,3-butadiène) a été réalisée expérimentalement en tube à onde de choc en mesurant des délais d'auto-inflammation de mélanges composé insaturé-oxygéne-argon entre 1011 et 1742 K. Un mécanisme comportant 206 réactions élaboré au laboratoire a été utilisé pour modéliser nos résultats. Des analyses de sensibilité et de vitesse ont permis de dégager les voies réactionnelles prépondérantes : la formation de benzène à notamment été attribuée à la combinaison de deux radicaux propargyle C₃H₃.
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Huerre, Gaël. "Sur les ondes internes de gravité : guidage des ondes de relief et interaction avec une barrière dynamique." Université Joseph Fourier (Grenoble), 1999. http://www.theses.fr/1999GRE10188.

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La premiere partie de ce memoire est consacree a l'etude analytique du guidage d'ondes internes de gravite en champ lointain, emises par un corps en mouvement horizontal. L'etude a ete appliquee a deux stratifications : l'une correspond au cas du confinement et le guidage est provoque par reflexion, l'autre correspond a une thermocline en secante hyperbolique et le guidage resulte de la refraction. Ces deux etudes ont ete appliquees au cas d'ondes internes emises par un corps spherique en mouvement de translation uniforme, et validees par des etudes experimentales realisees par meteo-france dans les memes conditions. L'influence de divers parametres tel que le nombre de froude a ensuite ete etudiee. Dans la deuxieme partie, nous avons examine la conjecture selon laquelle le transport de matiere par des processus ondulatoires pourrait avoir lieu au travers d'un bord de tourbillon tel que le vortex polaire. Un paquet d'ondes internes a ete emis en direction d'une barriere dynamique barotrope modelisee par une couche de melange puis par un jet dans un milieu de stratification uniforme. Une analyse lineaire nous a permis d'estimer l'influence de differents parametres sur l'interaction ondes-vortex. Nous avons mene une etude numerique a l'aide d'un code tridimensionnel pseudo-spectral et nous avons observe le deferlement du paquet d'ondes lors de son interaction avec la barriere dynamique. A l'aide d'un colorant, nous avons visualise le transport de matiere par deferlement des ondes. Puis nous avons quantifie ce transport a l'aide d'un coefficient de diffusion turbulente.
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Piton, Adrien. "CONTRIBUTION A LA MODELISATION UNIDIMENSIONNELLE DES SOUPAPES DE MOTEURS A COMBUSTION INTERNE. ETUDES EXPERIMENTALE ET NUMERIQUE." Phd thesis, Ecole centrale de nantes - ECN, 2011. http://tel.archives-ouvertes.fr/tel-00877187.

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La modélisation des moteurs à combustion interne nécessite une compréhension fine de la vidange et du remplissage en air ou en mélange des cylindres. Pour ce faire, une analyse bibliographique des différents phénomènes intervenant sur ces paramètres et des modèles apparentés est faite. Une revue des différents moyens d'essais de la littérature est également effectuée. Des essais en condition stationnaire sur une culasse issue d'un moteur produit en série sont ensuite effectués. L'analyse de ces résultats est faite au regard des trois principaux modèles de soupape : Barré de StVenant, Benson et Blair. L'étude des hypothèses de ces trois modèles ayant montré leur équivalence en écoulement sortant d'une tubulure, l'accent est mis sur l'impact des différentes hypothèses sur les résultats expérimentaux. Les trois modèles prenant pour hypothèse un écoulement stationnaire au col de la soupape, des essais instationnaires sont ensuite effectués. Ces données sont ensuite comparées à des résultats de simulation issus des trois précédents modèles. Les différences entre les trois modèles en écoulement sortant d'un cylindre et rentrant dans une tubulure apparaissent et sont analysées. Enfin, l'hypothèse d'absence de transferts thermiques est remise en cause. Des essais à haute température sont pour cela effectués. Les conditions d'essais ne permettant pas quantifier correctement ces transferts thermiques, un modèle d'écoulement au travers des soupapes prenant en compte les transferts thermiques est proposé. Son étude théorique permet d'évaluer l'impact de ces transferts sur la vidange et le remplissage du cylindre.
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Dupont, Pascal. "Ondes internes engendrées par une source oscillante en mouvement." Université Joseph Fourier (Grenoble), 1995. http://www.theses.fr/1995GRE10089.

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Dans un fluide stratifie, le mouvement d'un corps est responsable de deux sources d'ondes internes: l'ecoulement potentiel qui engendre les ondes de relief et le sillage. L'objet de ce memoire est la comprehension des ondes emises par le sillage d'un corps tridimensionnel, qui masquent les ondes de relief a hauts nombres de froude et de reynolds. L'effet collectif des effondrements successifs des structures coherentes du sillage est modelise par une source oscillant a la frequence d'instabilite du sillage et en translation a la meme vitesse que le corps. Les ondes engendrees par une telle source ont ete calculees par la methode des fonctions de green (theorie lineaire) et visualisees experimentalement dans le cas d'une sphere oscillant verticalement et en translation horizontale. Ces comparaisons ont permis de valider la theorie utilisee et de comprendre les deux phenomenes qui eliminent les ondes courtes: l'extension spatiale de la source et la viscosite. Cette etude nous a permis de construire une source equivalente au sillage turbulent. Nous avons pu decrire le front d'onde moyen, les longueurs d'onde dominantes et l'ordre de grandeur des amplitudes des ondes emises par le sillage turbulent en fonction du nombre de froude. Neanmoins une etude experimentale du sillage d'une colline gaussienne a permis de mettre en evidence un deuxieme mecanisme d'emission d'ondes internes par le sillage: l'advection des structures coherentes pour lequel un modele collectif est egalement propose
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Pareige, Pascal. "Spectroscopie des résonances acoustiques : source interne dans les tubes, inclusions cylindriques liquides." Le Havre, 1988. http://www.theses.fr/1988LEHAA001.

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Diffusion par une coque élastique remplie d'air et immergée dans l'eau. L'examen des spectres de résonances porte sur les résonances associées aux ondes de Scholte-Stoneley et de la première onde de galerie à écho. Diffusion par des cavités situées dans de l'aluminium et contenant un liquide. On montre que l'écart en fréquence réduite séparant deux résonances consécutives est constant et égal à pi /2
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Books on the topic "Onde interne"

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Reichardt, Christian. One-to-One-Marketing im Internet. Gabler Verlag, 2000. http://dx.doi.org/10.1007/978-3-322-96439-7.

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Reichardt, Christian. One-to-One-Marketing im Internet. Gabler Verlag, 2002. http://dx.doi.org/10.1007/978-3-322-82866-8.

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Eduardo, Guedes Luís, ed. Internet na f@vela: Quantos, quem, onde, para quê. Gramma, 2005.

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1963-, Kania Deborah, and Yaeckel Beth, eds. Internet world guide to one-to-one Web marketing. Wiley Computer Pub., 1998.

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Brewer, Donald R. Netscape ONE sourcebook. Wiley Computer Pub., 1997.

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Andreou, Sofie. Leveraging the power of the internet !: Volume one. Sofie Andreou, 2010.

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1963-, Kania Deborah, Yaeckel Beth, and Allen, Cliff, 1948- Internet world guide to one-to-one Web marketing, eds. One-to-one web marketing: Build a relationship marketing strategy one customer at a time. 2nd ed. Wiley, 2001.

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The Nexus One pocket guide. Peachpit, 2010.

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Porterfield, Amy. Facebook marketing all-in-one for dummies. Wiley Pub., 2011.

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Phyllis, Khare, and Vahl Andrea, eds. Facebook marketing all-in-one for dummies. Wiley Pub., 2011.

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Book chapters on the topic "Onde interne"

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Comer, Douglas E. "The World was Once Analog." In The Internet Book. Chapman and Hall/CRC, 2018. http://dx.doi.org/10.1201/9780429447358-3.

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Reichardt, Christian. "Banken und Versicherungen vor großen Herausforderungen." In One-to-One-Marketing im Internet. Gabler Verlag, 2002. http://dx.doi.org/10.1007/978-3-322-82866-8_1.

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Reichardt, Christian. "Der Kunde steht im Mittelpunkt." In One-to-One-Marketing im Internet. Gabler Verlag, 2002. http://dx.doi.org/10.1007/978-3-322-82866-8_2.

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Reichardt, Christian. "Neue Verkaufschancen durch One-to-One-Kommunikation." In One-to-One-Marketing im Internet. Gabler Verlag, 2002. http://dx.doi.org/10.1007/978-3-322-82866-8_3.

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Reichardt, Christian. "Beispiele für die Personalisierung." In One-to-One-Marketing im Internet. Gabler Verlag, 2002. http://dx.doi.org/10.1007/978-3-322-82866-8_4.

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Reichardt, Christian. "Stufenweises Vorgehen ist erfolgreich." In One-to-One-Marketing im Internet. Gabler Verlag, 2002. http://dx.doi.org/10.1007/978-3-322-82866-8_5.

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Reichardt, Christian. "Ein Blick in die Zukunft." In One-to-One-Marketing im Internet. Gabler Verlag, 2002. http://dx.doi.org/10.1007/978-3-322-82866-8_6.

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Reichardt, Christian. "Banken und Versicherungen vor neuen Herausforderungen." In One-to-One-Marketing im Internet. Gabler Verlag, 2000. http://dx.doi.org/10.1007/978-3-322-96439-7_1.

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Reichardt, Christian. "Von der Transaktion zum aktiven Verkauf." In One-to-One-Marketing im Internet. Gabler Verlag, 2000. http://dx.doi.org/10.1007/978-3-322-96439-7_2.

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Reichardt, Christian. "Neue Verkaufschancen durch One-to-One-Kommunikation." In One-to-One-Marketing im Internet. Gabler Verlag, 2000. http://dx.doi.org/10.1007/978-3-322-96439-7_3.

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Conference papers on the topic "Onde interne"

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Pages, A., J. Perello, S. Spadaro, J. A. Garcia-Espin, Jordi Ferrer Riera, and S. Figuerola. "Optimal allocation of virtual optical networks for the future internet." In 2012 16th International Conference on Optical Networking Design and Modeling (ONDM). IEEE, 2012. http://dx.doi.org/10.1109/ondm.2012.6210209.

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Sturzinger, Eric, Massimo Tornatore, and Biswanath Mukherjee. "Application-aware resource provisioning in a heterogeneous Internet of Things." In 2017 International Conference on Optical Network Design and Modeling (ONDM). IEEE, 2017. http://dx.doi.org/10.23919/ondm.2017.7958552.

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Yannuzzi, M., A. Jukan, X. Masip-Bruin, et al. "The internet and transport network management ecosystems: A roadmap toward convergence." In 2012 16th International Conference on Optical Networking Design and Modeling (ONDM). IEEE, 2012. http://dx.doi.org/10.1109/ondm.2012.6210200.

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Fagertun, Anna M., Sarah Ruepp, and Bjarke Skjoldstrup. "CAPEX/OPEX benefits of alien wavelengths for the next generation optical internet." In 2015 International Conference on Optical Network Design and Modeling (ONDM). IEEE, 2015. http://dx.doi.org/10.1109/ondm.2015.7127285.

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Yixuan Qin, Yan Yan, G. S. Zervas, B. R. Rofoee, N. Amaya, and D. Simeonidou. "Software/hardware defined network (SHINE): A novel adaptive optical network framework for future internet." In 2012 16th International Conference on Optical Networking Design and Modeling (ONDM). IEEE, 2012. http://dx.doi.org/10.1109/ondm.2012.6210272.

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Frigui, Nejm Eddine, Tayeb Lemlouma, Stephane Gosselin, Benoit Radier, Renaud Le Meur, and Jean-Marie Bonnin. "Optimization of the upstream bandwidth allocation in passive optical networks using internet users' behavior forecast." In 2018 International Conference on Optical Network Design and Modeling (ONDM). IEEE, 2018. http://dx.doi.org/10.23919/ondm.2018.8396107.

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Glatz, Eduard, and Xenofontas Dimitropoulos. "Classifying internet one-way traffic." In the 12th ACM SIGMETRICS/PERFORMANCE joint international conference. ACM Press, 2012. http://dx.doi.org/10.1145/2254756.2254821.

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Glatz, Eduard, and Xenofontas Dimitropoulos. "Classifying internet one-way traffic." In the 2012 ACM conference. ACM Press, 2012. http://dx.doi.org/10.1145/2398776.2398781.

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Levillain, Olivier, Arnaud Ébalard, Benjamin Morin, and Hervé Debar. "One year of SSL internet measurement." In the 28th Annual Computer Security Applications Conference. ACM Press, 2012. http://dx.doi.org/10.1145/2420950.2420953.

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Martins, Tiago, João Correia, Sérgio Rebelo, João Bicker, and Penousal Machado. "Portraits of No One: An Internet Artwork." In MM '20: The 28th ACM International Conference on Multimedia. ACM, 2020. http://dx.doi.org/10.1145/3394171.3416337.

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Reports on the topic "Onde interne"

1

Freed, N., and N. Borenstein. Multipurpose Internet Mail Extensions (MIME) Part One: Format of Internet Message Bodies. RFC Editor, 1996. http://dx.doi.org/10.17487/rfc2045.

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Borenstein, N., and N. Freed. MIME (Multipurpose Internet Mail Extensions) Part One: Mechanisms for Specifying and Describing the Format of Internet Message Bodies. RFC Editor, 1993. http://dx.doi.org/10.17487/rfc1521.

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Clem, John, Vincent Urias, William Dee Atkins, and Christopher J. Symonds. Emulytics for Cyber-Enabled Physical Attack Scenarios: Interim LDRD Report of Year One Results. Office of Scientific and Technical Information (OSTI), 2015. http://dx.doi.org/10.2172/1234817.

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Cristy, M., and K. F. Eckerman. Specific absorbed fractions of energy at various ages from internal photon sources: 2, One-year-old. Office of Scientific and Technical Information (OSTI), 1987. http://dx.doi.org/10.2172/6203023.

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Filmer, Deon, Ezequiel Molina, and Waly Wane. Identifying Effective Teachers: Lessons from Four Classroom Observation Tools. Research on Improving Systems of Education (RISE), 2020. http://dx.doi.org/10.35489/bsg-rise-wp_2020/045.

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Four different classroom observation instruments—from the Service Delivery Indicators, the Stallings Observation System, the Classroom Assessment Scoring System, and the Teach classroom observation instrument—were implemented in about 100 schools across four regions of Tanzania. The research design is such that various combinations of tools were administered to various combinations of teachers, so these data can be used to explore the commonalities and differences in the behaviors and practices captured by each tool, the internal properties of the tools (for example, how stable they are across enumerators, or how various indicators relate to one another), and how variables collected by the various tools compare to each other. Analysis shows that inter-rater reliability can be low, especially for some of the subjective ratings; principal components analysis suggests that lower-level constructs do not map neatly to predetermined higher-level ones and suggest that the data have only a few dimensions. Measures collected during teacher observations are associated with student test scores, but patterns differ for teachers with lower versus higher subject content knowledge.
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Etyemezian, V., D. Shafer, J. Miller, et al. Erosion Potential of a Burn Site in the Mojave-Great Basin Transition Zone: Interim Summary of One Year of Measurements. Office of Scientific and Technical Information (OSTI), 2010. http://dx.doi.org/10.2172/1010273.

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WESTON (ROY F) INC LAKEWOOD CO. Draft Final Decision Document for Element One of the CERCLA Hazardous Wastes Interim Response Action at the Rocky Mountain Arsenal. Defense Technical Information Center, 1992. http://dx.doi.org/10.21236/ada273792.

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Fonseca, Liliana, Lisa Nieth, Maria Salomaa, and Paul Benneworth. Universities and Place Leadership: a question of agency and alignment. Universiteit Twente - Department of Science, Technology and Policy Studies (STePS), 2021. http://dx.doi.org/10.3990/4.2535-5686.2021.01.

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There is increasing interest in the question of how different stakeholders develop, implement and lead regional upgrading processes with the concept of place leadership emerging as one response to this. Simultaneously, universities face growing expectations that they will contribute to regional development processes – often through their collaborative relationships with other regional stakeholders. But universities are complex in terms of their internal and institutional structures, which undermines their capacities to enact coherent place leadership roles. We seek to understand how strategic leadership in universities can contribute to innovation and regional development in the context of the fundamental institutional complexity of universities. We address this through a qualitative, explorative case study comparing six European regions where universities have sincerely attempted to deliver place leadership roles. We identify that the elements of agency and alignment are vital in that: firstly, university leadership has to align with regional coalitions on the one hand and internal structures on the other hand, and secondly, this leadership must give individuals agency in their regional engagement activities.
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Sarah, Cummings. How to write a policy brief: getting started, writing your policy brief, and best practices. Swiss National Science Foundation (SNSF), 2019. http://dx.doi.org/10.46446/publication_r4d.2019.4.en.

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The Swiss Programme for Research on Global Issues for Development (r4d programme) comprises interand transdisciplinary research partnerships between researchers at Swiss institutions and their partners in developing countries. Policy briefs represent one way in which r4d researchers can disseminate their research findings, approaches and tools to stakeholders from policy and practice. This short guide provides advice for writing policy briefs, some best practices and links to additional sources.
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Jones, Emily, Beatriz Kira, Anna Sands, and Danilo B. Garrido Alves. The UK and Digital Trade: Which way forward? Blavatnik School of Government, 2021. http://dx.doi.org/10.35489/bsg-wp-2021/038.

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The internet and digital technologies are upending global trade. Industries and supply chains are being transformed, and the movement of data across borders is now central to the operation of the global economy. Provisions in trade agreements address many aspects of the digital economy – from cross-border data flows, to the protection of citizens’ personal data, and the regulation of the internet and new technologies like artificial intelligence and algorithmic decision-making. The UK government has identified digital trade as a priority in its Global Britain strategy and one of the main sources of economic growth to recover from the pandemic. It wants the UK to play a leading role in setting the international standards and regulations that govern the global digital economy. The regulation of digital trade is a fast-evolving and contentious issue, and the US, European Union (EU), and China have adopted different approaches. Now that the UK has left the EU, it will need to navigate across multiple and often conflicting digital realms. The UK needs to decide which policy objectives it will prioritise, how to regulate the digital economy domestically, and how best to achieve its priorities when negotiating international trade agreements. There is an urgent need to develop a robust, evidence-based approach to the UK’s digital trade strategy that takes into account the perspectives of businesses, workers, and citizens, as well as the approaches of other countries in the global economy. This working paper aims to inform UK policy debates by assessing the state of play in digital trade globally. The authors present a detailed analysis of five policy areas that are central to discussions on digital trade for the UK: cross-border data flows and privacy; internet access and content regulation; intellectual property and innovation; e-commerce (including trade facilitation and consumer protection); and taxation (customs duties on e-commerce and digital services taxes). In each of these areas the authors compare and contrast the approaches taken by the US, EU and China, discuss the public policy implications, and examine the choices facing the UK.
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