Bibliografias temáticas / Propagation of shocks

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Literatura científica selecionada sobre o tema "Propagation of shocks"

Autor: Grafiati
Publicado: 22 de fevereiro de 2025

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Artigos de revistas sobre o assunto "Propagation of shocks"

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Kevlahan, N. K. R. "The propagation of weak shocks in non-uniform flows". Journal of Fluid Mechanics 327 (25 de novembro de 1996): 161–97. http://dx.doi.org/10.1017/s0022112096008506.

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A new theory of the propagation of weak shocks into non-uniform, two-dimensional flows is introduced. The theory is based on a description of shock propagation in terms of a manifold equation together with compatibility conditions for shock strength and its normal derivatives behind the shock. This approach was developed by Ravindran & Prasad (1993) for shocks of arbitrary strength propagating into a medium at rest and is extended here to non-uniform media and restricted to moderately weak shocks. The theory is tested against known analytical solutions for cylindrical and plane shocks, and against a full direct numerical simulation (DNS) of a shock propagating into a sinusoidal shear flow. The test against DNS shows that the present theory accurately predicts the evolution of a moderately weak shock front, including the formation of shock-shocks due to shock focusing. The theory is then applied to the focusing of an initially parabolic shock, and to the propagation of an initially straight shock into a variety of simple flows (sinusoidal shear, vortex array, point-vortex array) exhibiting some fundamental properties of turbulent flows. A number of relations are deduced for the variation of shock quantities with initial shock strength MS0 and the Mach number of the flow ahead of the shock MU (e.g. separation of shock-shocks and maximum shock strength at a focus). It is found that shock-shocks are likely to form in turbulent flows with Mt/M1N > 0.14–0.25, where Mt is the average Mach number of the turbulence and M1N is the Mach number of the shock in a flow at rest. The shock moves up to 1.5% faster in a two-dimensional vortex array than in uniform flow.
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GAVRILYUK, S. L., e R. SAUREL. "Rankine–Hugoniot relations for shocks in heterogeneous mixtures". Journal of Fluid Mechanics 575 (março de 2007): 495–507. http://dx.doi.org/10.1017/s0022112006004496.

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The conservation of mass, momentum and energy are not sufficient to close a system of jump relations for shocks propagating in a heterogeneous mixture of compressible fluids. We propose here a closed set of relations corresponding to a two-stage structure of shock fronts. At the first stage, microkinetic energy due to the relative motion of mixture components is produced at the shock front. At the second stage, this microkinetic energy disappears inducing strong variations in the thermodynamical states that reach mechanical equilibrium. The microkinetic energy produced at the shock front is estimated by using an idea developed earlier for turbulent shocks in compressible fluids. The relaxation zone between the shocked state and the equilibrium state is integrated over a thermodynamic path a justification of which is provided. Comparisons with experiments on shock propagation in a mixture of condensed materials confirm the proposed theory.
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Hesselink, Lambertus, e Bradford Sturtevant. "Propagation of weak shocks through a random medium". Journal of Fluid Mechanics 196 (novembro de 1988): 513–53. http://dx.doi.org/10.1017/s0022112088002800.

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The propagation of weak shock waves (Ms = 1.007, 1.03 and 1.1) through a statistically uniform random medium has been investigated experimentally in a shock tube. The wave-from geometry, rise time and amplitude of initially plane shocks which have propagated through a random mixture of helium and refrigerant 12 are measured. The effect of shock propagation on the properties of the random medium is visualized with schlieren and shadow photography. The pressure histories of the distorted shock waves reflecting from a normal end wall are observed to be both peaked and rounded. In the rounded case the perturbed shock is found to be made up of a succession of weak, slightly curved fronts with a total effective rise time orders of magnitude greater than the classical Taylor thickness. The radius of curvature of the weakest shocks after propagating through the random medium is inferred from observations at two downstream stations to be about 7 times the integral scale of the gas inhomogeneities. It is concluded that the observed distortions of the wave fronts can best be explained in terms of random focusing and defocusing of the front by the inhomogeneities in the medium. A ray-tracing calculation has been used to interpret the experimental observations. It is found that geometrical considerations are sufficient to account for many of the effects observed on the shocks.
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Erkaev, N. V., V. A. Shaidurov, V. S. Semenov e H. K. Biernat. "Effects of MHD slow shocks propagating along magnetic flux tubes in a dipole magnetic field". Nonlinear Processes in Geophysics 9, n.º 2 (30 de abril de 2002): 163–72. http://dx.doi.org/10.5194/npg-9-163-2002.

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Abstract. Variations of the plasma pressure in a magnetic flux tube can produce MHD waves evolving into shocks. In the case of a low plasma beta, plasma pressure pulses in the magnetic flux tube generate MHD slow shocks propagating along the tube. For converging magnetic field lines, such as in a dipole magnetic field, the cross section of the magnetic flux tube decreases enormously with increasing magnetic field strength. In such a case, the propagation of MHD waves along magnetic flux tubes is rather different from that in the case of uniform magnetic fields. In this paper, the propagation of MHD slow shocks is studied numerically using the ideal MHD equations in an approximation suitable for a thin magnetic flux tube with a low plasma beta. The results obtained in the numerical study show that the jumps in the plasma parameters at the MHD slow shock increase greatly while the shock is propagating in the narrowing magnetic flux tube. The results are applied to the case of the interaction between Jupiter and its satellite Io, the latter being considered as a source of plasma pressure pulses.
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Watari, S., e T. Detman. "In situ local shock speed and transit shock speed". Annales Geophysicae 16, n.º 4 (30 de abril de 1998): 370–75. http://dx.doi.org/10.1007/s00585-998-0370-9.

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Abstract. A useful index for estimating the transit speeds was derived by analyzing interplanetary shock observations. This index is the ratio of the in situ local shock speed and the transit speed; it is 0.6–0.9 for most observed shocks. The local shock speed and the transit speed calculated for the results of the magnetohydrodynamic simulation show good agreement with the observations. The relation expressed by the index is well explained by a simplified propagation model assuming a blast wave. For several shocks the ratio is approximately 1.2, implying that these shocks accelerated during propagation in slow-speed solar wind. This ratio is similar to that for the background solar wind acceleration.Keywords. Interplanetary physics (Flare and stream dynamics; Interplanetary shocks; Solar wind plasma)
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Cook, David. "Real Propagation of Monetary Shocks: Dynamic Complementarities and Capital Utilization". Macroeconomic Dynamics 3, n.º 3 (setembro de 1999): 368–83. http://dx.doi.org/10.1017/s1365100599012043.

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This paper studies the dynamic propagation of a liquidity shock through two real propagation channels: dynamic complementarities and time-varying capital utilization. The findings for an economy with intertemporal externalities are: (1) An otherwise transient liquidity shock will have real effects on output for several years; (2) time-varying capital utilization strongly augments this propagation; (3) the real effects of monetary shocks last longer when external productivity depreciates faster; and (4) nominal prices respond more sluggishly to a change in the money supply when there is a strong real propagation channel.
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Tenorio-Tagle, Guillermo. "On the Formation and Propagation of Interstellar Jets". International Astronomical Union Colloquium 120 (1989): 264–75. http://dx.doi.org/10.1017/s0252921100023848.

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Summary.The flow that results from stationary supersonically converging conical streams is studied by means of two dimensional numerical calculations. Convcrgency leads to a “colimator” conical shock and this to the formation of an underexpanded hydrodynamical jet. The properties of the conical shock and of the collimated stream are summarized for a variety of initial conditions. The resultant jets are followed to large distances (≥ 7.5X1017 cm) away from the injection point, and are shown to develop a complicated structure that eventually approaches a stationary state. Stationary features such as crossing shocks are shown to evolve from working surface shocks, left behind the head of the jet to ensure self-collimation of the beam matter.
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Xu, Y. F., S. C. Hu, Y. Cai e S. N. Luo. "Origins of plastic shock waves in single-crystal Cu". Journal of Applied Physics 131, n.º 11 (21 de março de 2022): 115901. http://dx.doi.org/10.1063/5.0080757.

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We investigate shock wave propagation in single-crystal Cu with large-scale molecular dynamics simulations. Plastic shock waves propagate via dislocation nucleation or growth. With decreasing particle velocity, a remarkable drop in plastic shock wave velocity relative to the linear shock velocity–particle velocity relation is observed in the elastic–plastic two-wave regime for different loading directions. This reduction can be attributed to the changes in the mechanisms of plastic shock wave generation/propagation, from the dislocation nucleation-dominant mode, to the alternating nucleation and growth mode, and to the growth-dominant mode. For weak shocks, the plastic shock advances at the speed of the growth of existing dislocations (below the maximum elastic shock wave speed), considerably slower than the dislocation nucleation front for strong shocks (above the maximum elastic shock wave speed).
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Ohmura, Takumi, Mami Machida, Kenji Nakamura, Yuki Kudoh, Yuta Asahina e Ryoji Matsumoto. "Two-Temperature Magnetohydrodynamics Simulations of Propagation of Semi-Relativistic Jets". Galaxies 7, n.º 1 (11 de janeiro de 2019): 14. http://dx.doi.org/10.3390/galaxies7010014.

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In astrophysical jets observed in active galactic nuclei and in microquasars, the energy exchange rate by Coulomb collision is insufficient for thermal equilibrium between ions and electrons. Therefore, it is necessary to consider the difference between the ion temperature and the electron temperature. We present the results of two-temperature magnetohydrodynamics(MHD) simulations to demonstrate the effects of Coulomb coupling. It is assumed that the thermal dissipation heats only ions. We find that the ion and electron temperatures are separated through shocks. Since the ion entropy is increased by energy dissipation at shocks and the Coulomb collisions are inefficient, electron temperature becomes about 10 times lower than the ion temperature in the hotspot ahead of the jet terminal shock. In the cocoon, electron temperature decreases by gas mixing between high temperature cocoon gas and low temperature shocked-ambient gas even when we neglect radiative cooling, but electrons can be heated through collisions with ions. Radiation intensity maps are produced by post processing numerical results. Distributions of the thermal bremsstrahlung radiation computed from electron temperature have bright filament and cavity around the jet terminal shock.
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MONICA, A., e PHOOLAN PRASAD. "Propagation of a curved weak shock". Journal of Fluid Mechanics 434 (10 de maio de 2001): 119–51. http://dx.doi.org/10.1017/s0022112001003731.

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Propagation of a curved shock is governed by a system of shock ray equations which is coupled to an infinite system of transport equations along these rays. For a two-dimensional weak shock, it has been suggested that this system can be approximated by a hyperbolic system of four partial differential equations in a ray coordinate system, which consists of two independent variables (ζ, t) where the curves t = constant give successive positions of the shock and ζ = constant give rays. The equations show that shock rays not only stretch longitudinally due to finite amplitude on a shock front but also turn due to a non-uniform distribution of the shock strength on it. These changes finally lead to a modification of the amplitude of the shock strength. Since discontinuities in the form of kinks appear on the shock, it is necessary to study the problem by using the correct conservation form of these equations. We use such a system of equations in conservation form to construct a total-variation-bounded finite difference scheme. The numerical solution captures converging shock fronts with a pair of kinks on them – the shock front emerges without the usual folds in the caustic region. The shock strength, even when the shock passes through the caustic region, remains so small that the small-amplitude theory remains valid. The shock strength ultimately decays with a well-defined geometrical shape of the shock front – a pair of kinks which separate a central disc from a pair of wings on the two sides. We also study the ultimate shape and decay of shocks of initially periodic shapes and plane shocks with a dent and a bulge.
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Teses / dissertações sobre o assunto "Propagation of shocks"

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Kanda, Daniel Stanley. "Optimal fiscal policy propagation of monetary policy shocks". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ35965.pdf.

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Takahashi, Takuya. "Dynamics of Flare Shocks and Propagation of Coronal Mass Ejections". 京都大学 (Kyoto University), 2017. http://hdl.handle.net/2433/225406.

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Xyngis, Georgios. "On the propagation of scale-dependent macroeconomic shocks into asset prices". Thesis, University of East Anglia, 2016. https://ueaeprints.uea.ac.uk/63948/.

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This thesis focuses on the propagation of scale-specific (i.e., horizon-dependent) macroeconomic shocks into asset prices. In particular, chapter 1 provides an introduction to the theory and methods necessary for understanding scale-dependencies in financial economics. First, I present the multiresolution-based decompositions for weakly stationary time series of Ortu et al. (2013) and discuss its connection with other techniques in the literature. Next, I analyse the power and size properties of multi-scale variance ratio tests that distinguish a white noise process from a process whose scale-dependent components are serially correlated. Finally, I present an extension of the framework of Bandi et al. (2016) for scale-specific predictability. In chapter 2, I show that a single factor that captures assets' exposure to business-cycle variation in macroeconomic uncertainty can explain the level and cross-sectional differences of asset returns. In addition, I find that - in contrast with previous studies in the literature - macro uncertainty is not a valid risk factor under the ICAPM. Chapter 3 provides an empirical assessment of Epstein-Zin preferences in the frequency domain. I demonstrate that the strict conditions implied by the spectral decomposition of recursive preferences are not empirically satisfied. That is, macroeconomic shocks with frequencies lower than the business-cycle are not robustly priced in asset prices.
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Crespo, Cuaresma Jesus, Florian Huber e Luca Onorante. "The macroeconomic effects of international uncertainty shocks". WU Vienna University of Economics and Business, 2017. http://epub.wu.ac.at/5462/1/wp245.pdf.

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We propose a large-scale Bayesian VAR model with factor stochastic volatility to investigate the macroeconomic consequences of international uncertainty shocks on the G7 countries. The factor structure enables us to identify an international uncertainty shock by assuming that it is the factor most correlated with forecast errors related to equity markets and permits fast sampling of the model. Our findings suggest that the estimated uncertainty factor is strongly related to global equity price volatility, closely tracking other prominent measures commonly adopted to assess global uncertainty. The dynamic responses of a set of macroeconomic and financial variables show that an international uncertainty shock exerts a powerful effect on all economies and variables under consideration.
Series: Department of Economics Working Paper Series
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Rüth, Sebastian [Verfasser], e Peter [Gutachter] Bofinger. "Monetary Policy, Housing Market Dynamics, and the Propagation of Shocks / Sebastian Rüth ; Gutachter: Peter Bofinger". Würzburg : Universität Würzburg, 2016. http://d-nb.info/1137835907/34.

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Pinheiro, Marcio Oliveira. "Propagação de ondas em teorias alternativas da gravitação". Universidade do Estado do Rio de Janeiro, 2012. http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=6228.

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Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro
Uma forma de generalizar a teoria de Einstein da gravitação é incorporar na lagrangiana termos que dependem de escalares formados com os tensores de Ricci e Riemann, tais como (Ricci)2, ou (Riemann)2. Estas teorias tem sido estudadas intensamente nos últimos anos, já que elas podem ser usadas para descrever a expansão acelerada do universo no modelo cosmológico standard. Entre os desfios de modificar a teoria de Einstein, se encontra o de limitar a ambiguidade na escolha da dependência da lagrangiana com os escalares antes mencionados. A proposta desta dissertação é a de colocar limites sobre as possíveis lagrangianas impondo que as ondas (isto é, perturbações lineares) se propaguem no vácuo sem que apareça, shocks.
One way to generalize Einstein's theory of gravitation is by the addition of terms that depend on scalar formed with Ricci and Riemann tensors, such as (Ricci)2 or (Riemann)2 in the lagrangians.These theories have been intensively studied in recent years, since they can be used to describe the accelerated expansion of the universe in the standard cosmological model. One of the challenges to modify Einstein's theory is to limit the ambiguity in the choice of the dependence of the Lagrangian with the aforementioned scalars. The purpose of this dissertation is to put limits on the possible Lagrangians imposing that the waves(ie, linear perturbations) propagate in a vacuum without the appearance of shocks.
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Poirier, Côme. "The macroeconomics of sectoral propagation : Three essays in production networks". Electronic Thesis or Diss., Université Paris sciences et lettres, 2024. http://www.theses.fr/2024UPSLD051.

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La production économique d'un pays est organisée en un entrelacement complexe d'unités reliées les unes aux autres par des liens de fournisseurs-acheteurs. En particulier, les secteurs, qui sont des regroupements de firmes partageant une activité de production similaire, forment un réseau à travers les biens et services qu'ils se fournissent mutuellement pour produire. A cet effet, lorsqu'un secteur subit un choc économique quelconque, il est probable que d'autres secteurs auxquels il est relié soient affectés eux aussi (augmentation des coûts de production, adoption d'une nouvelle technologie...): le choc s'est propagé d'un secteur à un autre. De récents épisodes de disruption économique comme le conflit Ukrainien ou l'épidémie de Covid-19 ont mis en exergue la vulnérabilité des économies via leurs chaînes de production. Un exemple parlant est l'approvisionnement en énergie, bien dont tous les secteurs ont crucialement besoin pour produire. Toute crise énergétique génère inévitablement des chocs de coûts de production pour les autres secteurs.Le but de cette thèse est de comprendre les mécanismes à l'oeuvre lorsqu'un choc sectoriel vient à se propager vers d'autres industries. Les objectifs de ces travaux sont donc de trois natures différentes: comprendre, modéliser, recommander. Le premier chapitre estime l'hétérogénéité des capacités de substitution des secteurs en utilisant des données de quantité, de prix et de consommation pour l'économie américaine. Ce modèle permet aussi d'étudier l'impact de cette hétérogénéité sur la propagation de chocs inter-sectorielle. Le deuxième chapitre étudie les effets de la politique industrielle dans un modèle où les liens inter-sectoriels peuvent changer (i.e. les liens fournisseurs-acheteurs évoluent dans le temps). Dans cet article, il est donné des éléments théoriques sur l'effet de telles politiques industrielles ainsi qu'une étude quantitative afin de comprendre quels secteurs sont les plus propices pour des subventions étatiques ou des taxes élevées. Enfin, le troisième chapitre propose un des premiers modèles désagrégeant à la fois le côté production (secteurs) et le côté demande finale (ménages) de l'économie. Ce modèle permet de comprendre les effets redistributifs des chocs sectoriels. En d'autres termes, il permet d'analyser comment un choc issu d'un secteur spécifique peut affecter les inégalités pour des ménages travaillant dans d'autres secteurs
The economic production of a country is organised in a complex interweaving of units linked to each other by supplier-buyer links. In particular, sectors, which are groupings of firms sharing a similar production activity, form a network through the goods and services they supply to each other for production. When a sector suffers an economic shock of any kind, it is likely that other sectors to which it is linked will also be affected (increased production costs, adoption of a new technology, etc.): the shock will have spread from one sector to another. Recent episodes of economic disruption such as the Ukrainian conflict or the Covid-19 epidemic have highlighted the vulnerability of economies via their production chains. A telling example is the supply of energy, a commodity that all sectors crucially need in order to produce. Any energy crisis inevitably generates production cost shocks for other sectors.The aim of this thesis is to understand the mechanisms at work when a sectoral shock spreads to other industries. The objectives of this work are therefore threefold: to understand, to model and to recommend. The first chapter estimates the heterogeneity of substitution capacities between sectors using quantity, price and consumption data for the US economy. This model is also used to study the impact of this heterogeneity on the propagation of inter-sector shocks. The second chapter studies the effects of industrial policy in a model where inter-sectoral linkages can change (i.e. supplier-buyer linkages evolve over time). In this paper, theoretical elements on the effect of such industrial policies are given as well as a quantitative study to understand which sectors are the most conducive to state subsidies or high taxes. Finally, the third chapter proposes one of the first models to disaggregate both the production side (sectors) and the final demand side (households) of the economy. This model makes it possible to understand the redistributive effects of sectoral shocks. In other words, it enables us to analyse how a shock originating in a specific sector can affect inequalities for households working in other sectors
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LaJeunesse, Jeff. "Implications of heterogeneity in the shock wave propagation of dynamically shocked materials". Thesis, Marquette University, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=1586700.

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The field of shock physics as a whole has only recently begun to pay particular attention to modeling heterogeneous materials under shock loading. These materials are important because of their practicality in terms of creating stronger, more shock resistant materials. To understand why they absorb shock impact energy better than homogeneous materials means that the small-scale processes that occur during the shock loading of these heterogeneous materials needs to be understood. Recent computational experiments, called mesoscale simulations, have shown that explicitly incorporating small-scale heterogeneous features into hydrocode simulations allows the bulk shock response of the heterogeneous material to be observed while not requiring the use of empirically determined constitutive equations. Including these features in simulations can offer insights into the irreversible mechanisms that dominate the propagation of shock waves in heterogeneous materials.

Three cases where the mesoscale approach for modeling the dynamic shock loading of heterogeneous materials are presented. These materials fall into three categories: granular - dry sand, granular with binder - concrete, and granular contained in a metal foam with a binder - granular explosive contained in an aluminum foam. The processes in which shock waves propagate through each material are addressed and relationships between the three materials are discussed. Particle velocity profiles for dry sand and concrete was obtained from Harvard University and Eglin Air Force Base, respectively. Mesoscale simulations using CTH are conducted for each type of heterogeneous material and the results are compared to the experimental data.

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Schwendeman, Donald William Whitham G. B. "Numerical shock propagation using geometrical shock dynamics /". Diss., Pasadena, Calif. : California Institute of Technology, 1986. http://resolver.caltech.edu/CaltechETD:etd-03082008-083041.

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Lennon, Francis. "Shock wave propagation in water". Thesis, Manchester Metropolitan University, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240559.

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Livros sobre o assunto "Propagation of shocks"

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Haan, Wouter J. Den. Job destruction and propagation of shocks. Cambridge, MA: National Bureau of Economic Research, 1997.

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Burnside, Craig. Factor hoarding and the propagation of business cycle shocks. Cambridge, MA: National Bureau of Economic Research, 1994.

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Rigobón, Roberto. On the measurement of the international propagation of shocks. Cambridge, MA: National Bureau of Economic Research, 1999.

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Canova, Fabio. Sources and propagation of international business cycles: Common shocks or transmission?. London: Centre for Economic Policy Research, 1993.

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Canova, Fabio. Sources and propagation of international business cycles: Common shocks or transmission? London: Centre for Economic Policy Research, 1993.

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S, Shtemenko L., ed. Propagation and reflection of shock waves. Singapore: World Scientific, 1998.

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Davison, L. W. Fundamentals of shock wave propagation in solids. Berlin: Springer, 2008.

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Fu, Yibin. Propagation of weak shock waves in nonlinear solids. Norwich: University of East Anglia, 1988.

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Leeuwen, E. H. Van. Weak shock waves propagating in fluid-gas mixtures. Ascot Vale, Vic: Materials Research Laboratories, 1985.

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Chuck, C. Combusting flow simulations of detonation and shock-induced combustion waves for ram accelerator configurations with viscous effect. Washington, D. C: American Institute of Aeronautics and Astronautics, 1991.

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Capítulos de livros sobre o assunto "Propagation of shocks"

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Wu, S. T. "Numerically-Simulated Formation and Propagation of Interplanetary Shocks". In Computer Simulation of Space Plasmas, 179–99. Dordrecht: Springer Netherlands, 1985. http://dx.doi.org/10.1007/978-94-009-5321-5_7.

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Carstensen, Edwin L., e David R. Bacon. "Biomedical Applications". In Nonlinear Acoustics, 415–39. Cham: Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-58963-8_15.

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AbstractThis chapter discusses the acoustical properties of tissues and the impact of nonlinear propagation effects in medical ultrasound. Aspects of this discussion include characteristics of medical equipment as measured in water, the relationship of measurements in water to the levels in tissues, and the implications of these fields for biological effects. Expressions are provided for estimating the shock formation distance in sound beams, and the effective absorption coefficient for ultrasound containing shocks. Also discussed are heating associated with the formation of shocks, biomedical implications of radiation pressure and acoustic streaming, and disintegration of kidney stones with shock-wave lithotripsy.
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De Siano, Rita, Valerio Leone Sciabolazza e Alessandro Sapio. "Resilience to Climate Impacts and Spatial Propagation in the Power Industry". In Regional Resilience to Climate and Environmental Shocks, 89–109. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-54588-8_6.

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Brouillette, M. "Effects of heat transfer on the propagation of shocks at small scales". In Shock Waves, 449–54. Berlin, Heidelberg: Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/978-3-540-27009-6_66.

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Neemeh, R. A. "The propagation and stability of converging cylindrical shocks in narrow cylindrical chambers". In Shock Waves, 273–78. Berlin, Heidelberg: Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-77648-9_38.

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Rudnitskij, Georgij M. "Origin and Propagation of Shocks in the Atmospheres of Mira-Type Stars". In Mass-Losing Pulsating Stars and their Circumstellar Matter, 137–38. Dordrecht: Springer Netherlands, 2003. http://dx.doi.org/10.1007/978-94-010-0139-7_27.

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Lee, John. "The Universal Role of Turbulence in the Propagation of Strong Shocks and Detonation Waves". In High-Pressure Shock Compression of Solids VI, 121–48. New York, NY: Springer New York, 2003. http://dx.doi.org/10.1007/978-1-4613-0013-7_3.

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Mokhtarzadeh, Fatemeh. "A global vector autoregression model for softwood lumber trade." In International trade in forest products: lumber trade disputes, models and examples, 174–93. Wallingford: CABI, 2021. http://dx.doi.org/10.1079/9781789248234.0174.

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Abstract A novel econometric approach is developed in this chapter, namely, the Global Vector Autoregressive (GVAR) model. It provides a comprehensive framework for analyzing the country-level impacts of various domestic, foreign, and/or global shocks on softwood lumber trade. The GVAR approach is applied to Canada-U.S. trade in softwood lumber and used to analyze the effect of external shocks on Canadian lumber prices. Findings indicate that Canada's export prices are positively correlated to U.S. housing starts and real GDP. Further, using impulse response functions, it is used to examine the effects on regional lumber export prices in Canada of: (1) a change in U.S. housing starts; (2) a reduction in U.S. GDP by one standard deviation; (3) a COVID-19 induced decline in U.S. GDP (of three standard deviations); (4) an increase in global oil prices; and, in the Appendix, (5) an increase in the long-term interest rate. Price impacts vary a great deal by Canadian region depending on the type of shock, with the propagation mechanism in Alberta significantly different from that in other regions. For example, with an oil price shock and because Alberta is a major exporter of oil, the lumber export price remains high even as the shock dissipates over time.
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Mokhtarzadeh, Fatemeh. "A global vector autoregression model for softwood lumber trade." In International trade in forest products: lumber trade disputes, models and examples, 174–93. Wallingford: CABI, 2021. http://dx.doi.org/10.1079/9781789248234.0008.

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Abstract A novel econometric approach is developed in this chapter, namely, the Global Vector Autoregressive (GVAR) model. It provides a comprehensive framework for analyzing the country-level impacts of various domestic, foreign, and/or global shocks on softwood lumber trade. The GVAR approach is applied to Canada-U.S. trade in softwood lumber and used to analyze the effect of external shocks on Canadian lumber prices. Findings indicate that Canada's export prices are positively correlated to U.S. housing starts and real GDP. Further, using impulse response functions, it is used to examine the effects on regional lumber export prices in Canada of: (1) a change in U.S. housing starts; (2) a reduction in U.S. GDP by one standard deviation; (3) a COVID-19 induced decline in U.S. GDP (of three standard deviations); (4) an increase in global oil prices; and, in the Appendix, (5) an increase in the long-term interest rate. Price impacts vary a great deal by Canadian region depending on the type of shock, with the propagation mechanism in Alberta significantly different from that in other regions. For example, with an oil price shock and because Alberta is a major exporter of oil, the lumber export price remains high even as the shock dissipates over time.
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Neugebauer, Marcia. "Propagating Shocks". In Cosmic Rays in the Heliosphere, 125–32. New York, NY: Springer New York, 2010. http://dx.doi.org/10.1007/978-1-4614-9200-9_11.

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Trabalhos de conferências sobre o assunto "Propagation of shocks"

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Ranieri, Ada, Simone De Carolis, Leonardo Soria, Michele Dassisti e Maria Cinefra. "Investigating Shock Propagation Through Composite Structures". In IAF Materials and Structures Symposium, Held at the 75th International Astronautical Congress (IAC 2024), 333–39. Paris, France: International Astronautical Federation (IAF), 2024. https://doi.org/10.52202/078369-0035.

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Nem̌ecěk, Zdeněk, Jana Šafránková, Lubomír Přech, Andriy Koval, Jan Merka, M. Maksimovic, K. Issautier, N. Meyer-Vernet, M. Moncuquet e F. Pantellini. "Propagation of Interplanetary Shocks Across the Bow Shock". In TWELFTH INTERNATIONAL SOLAR WIND CONFERENCE. AIP, 2010. http://dx.doi.org/10.1063/1.3395906.

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Ringo, Daniel, e Elliot Anenberg. "The Propagation of Demand Shocks Through Housing Markets". In 26th Annual European Real Estate Society Conference. European Real Estate Society, 2019. http://dx.doi.org/10.15396/eres2019_143.

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Fulton, R. D., P. J. Adams, G. A. Kyrala, G. L. Olson, G. T. Schappert e A. J. Taylor. "Stability of propagation of strong shocks at solid density". In The 11th international workshop on laser interaction and related plasma phenomena. AIP, 1994. http://dx.doi.org/10.1063/1.46952.

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Loules, Argyrios, e Nektarios Vlahakis. "On the Propagation of Relativistic Shocks in Conductive Media". In 7th Heidelberg International Symposium on High-Energy Gamma-Ray Astronomy. Trieste, Italy: Sissa Medialab, 2023. http://dx.doi.org/10.22323/1.417.0200.

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O’Reilly, Oliver M., e Peter C. Varadi. "Shocks in Thermoelastic Rods". In ASME 1999 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/imece1999-0940.

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Abstract A theory of a thermoelastic rod is presented in this paper. The theory is based on the work of Green and Naghdi, supplemented by singular supplies of momenta, energy and entropies at a discontinuity. In addition, several aspects of the theory in the presence of internal constraints are presented. The theory is suited to the study of numerous applications, including studies of phase transformations, propagation of shock and acceleration waves and axially moving rods.
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Rothenberg, Joshua E. "Observation of the Formation of an Optical Intensity Shock and Wave Breaking in the Nonlinear Propagation of Pulses in Optical Fibers". In Nonlinear Guided-Wave Phenomena. Washington, D.C.: Optica Publishing Group, 1989. http://dx.doi.org/10.1364/nlgwp.1989.thd4.

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A prominent class of phenomena in nonlinear wave propagation is that of shocks and breaking,1 which are known to occur in many diverse physical systems. Optical propagation in single mode fibers provides an excellent physical system for examining these phenomena because the propagation can be considered one dimensional, and is thought to be well described by the Nonlinear Schroedinger equation (NLSE). The possibility of so called optical intensity "envelope" shocks was first theoretically suggested by several researchers2-4 some 20 years ago. In the description of Ref. 3 a higher order nonlinear term was considered which results in an intensity dependent group velocity, but because they ignored the effects of dispersion, the shock formation proposed there has never been observed. Although, for optical pulses propagating in strongly nonlinear, dispersive near-resonant vapors, nsec observations of self-steepening have been reported.5 In addition, Hasegawa and Tappert6 have pointed out that the dark pulse solitary wave is in fact an example in the class of envelope shocks proposed by Ostrovskii.4
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Yatsui, Kiyoshi, Y. Joudai, Go Imada, Katsumi Masugata e Wataru Masuda. "Generation and propagation of shocks in discharge-pumped excimer laser". In Gas Flow and Chemical Lasers: Tenth International Symposium, editado por Willy L. Bohn e Helmut Huegel. SPIE, 1995. http://dx.doi.org/10.1117/12.204905.

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Bravo, S., e J. A. González-Esparza. "Interplanetary magnetic sectors and the propagation of transient shocks and ejecta". In The solar wind nine conference. AIP, 1999. http://dx.doi.org/10.1063/1.58714.

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Lario, D., M. Vandas e B. Sanahuja. "Energetic particle propagation in the downstream region of transient interplanetary shocks". In The solar wind nine conference. AIP, 1999. http://dx.doi.org/10.1063/1.58723.

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Relatórios de organizações sobre o assunto "Propagation of shocks"

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Ramey, Valerie. Macroeconomic Shocks and Their Propagation. Cambridge, MA: National Bureau of Economic Research, fevereiro de 2016. http://dx.doi.org/10.3386/w21978.

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Haan, Wouter J. den, Garey Ramey e Joel Watson. Job Destruction and Propagation of Shocks. Cambridge, MA: National Bureau of Economic Research, novembro de 1997. http://dx.doi.org/10.3386/w6275.

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Cooper, Russell, e John Haltiwanger. Inventories and the Propagation of Sectoral Shocks. Cambridge, MA: National Bureau of Economic Research, novembro de 1987. http://dx.doi.org/10.3386/w2425.

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Angeletos, George-Marios, e Chen Lian. Confidence and the Propagation of Demand Shocks. Cambridge, MA: National Bureau of Economic Research, agosto de 2020. http://dx.doi.org/10.3386/w27702.

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Burnside, Craig, e Martin Eichenbaum. Factor Hoarding and the Propagation of Business Cycles Shocks. Cambridge, MA: National Bureau of Economic Research, março de 1994. http://dx.doi.org/10.3386/w4675.

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Rigobon, Roberto. On the Measurement of the International Propagation of Shocks. Cambridge, MA: National Bureau of Economic Research, setembro de 1999. http://dx.doi.org/10.3386/w7354.

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Auerbach, Alan, Lorenz Kueng e Ronald Lee. Propagation and Smoothing of Shocks in Alternative Social Security Systems. Cambridge, MA: National Bureau of Economic Research, junho de 2013. http://dx.doi.org/10.3386/w19137.

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Muhlestein, Michael, e Carl Hart. Numerical analysis of weak acoustic shocks in aperiodic array of rigid scatterers. Engineer Research and Development Center (U.S.), outubro de 2020. http://dx.doi.org/10.21079/11681/38579.

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Nonlinear propagation of shock waves through periodic structures have the potential to exhibit interesting phenomena. Frequency content of the shock that lies within a bandgap of the periodic structure is strongly attenuated, but nonlinear frequency-frequency interactions pumps energy back into those bands. To investigate the relative importance of these propagation phenomena, numerical experiments using the Khokhlov-Zabolotskaya-Kuznetsov (KZK) equation are carried out. Two-dimensional propagation through a periodic array of rectangular waveguides is per-formed by iteratively using the output of one waveguide as the input for the next waveguide. Comparison of the evolution of the initial shock wave for both the linear and nonlinear cases is presented.
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Pastén, Ernesto, Raphael Schoenle e Michael Weber. The Propagation of Monetary Policy Shocks in a Heterogeneous Production Economy. Cambridge, MA: National Bureau of Economic Research, novembro de 2018. http://dx.doi.org/10.3386/w25303.

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Alvarez, Fernando, Hervé Le Bihan e Francesco Lippi. Small and Large Price Changes and the Propagation of Monetary Shocks. Cambridge, MA: National Bureau of Economic Research, maio de 2014. http://dx.doi.org/10.3386/w20155.

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