Relevant bibliographies by topics / Low Mach regime

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Low Mach regime'

Author: Grafiati
Published: 12 October 2024
Last updated: 31 July 2025

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Journal articles on the topic "Low Mach regime"

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Faccanoni, Gloria, Bérénice Grec, and Yohan Penel. "A homogeneous relaxation low mach number model." ESAIM: Mathematical Modelling and Numerical Analysis 55, no. 4 (2021): 1569–98. http://dx.doi.org/10.1051/m2an/2021032.

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In the present paper, we investigate a new homogeneous relaxation model describing the behaviour of a two-phase fluid flow in a low Mach number regime, which can be obtained as a low Mach number approximation of the well-known HRM. For this specific model, we derive an equation of state to describe the thermodynamics of the two-phase fluid. We prove some theoretical properties satisfied by the solutions of the model, and provide a well-balanced scheme. To go further, we investigate the instantaneous relaxation regime, and prove the formal convergence of this model towards the low Mach number a
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Jardine, M., and E. R. Priest. "Energetics of compressible models of fast steady-state magnetic reconnection." Journal of Plasma Physics 43, no. 1 (1990): 141–50. http://dx.doi.org/10.1017/s0022377800014677.

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An understanding of the energy transfer that takes place during magnetic reconnection is crucial to the study of this fundamental process. It depends on two factors: the type of reconnection regime (which is determined by the boundary conditions) and the degree of compressibility. Here we examine the role of compressibility in the energetics of a family of reconnection models. When the inflow Mach number (or reconnection rate) Me is small the effects of compressibility may be more important than the differences between regimes. We find that for a slow-compression regime with Me = 0·005 compres
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Ji, Zifei, Huiqiang Zhang, and Bing Wang. "Thrust control strategy based on the minimum combustor inlet Mach number to enhance the overall performance of a scramjet engine." Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering 233, no. 13 (2019): 4810–24. http://dx.doi.org/10.1177/0954410019830816.

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A lower combustor inlet Mach number is desirable in order to design a compact, lightweight combustor and boost the overall performance of the scramjet engine. In this study, a thrust control strategy is proposed for a hydrogen-fueled scramjet taking into account the operating limitations, which is called the minimum combustor inlet Mach number rule since the combustor inlet Mach number is used as the control variable. By scheduling the fuel supply and modifying the intake geometry, the combustor inlet Mach number can be minimized while ensuring a certain thrust output within the operation cons
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Baus, Franziska, Axel Klar, Nicole Marheineke, and Raimund Wegener. "Low-Mach-number and slenderness limit for elastic Cosserat rods and its numerical investigation." Asymptotic Analysis 120, no. 1-2 (2020): 103–21. http://dx.doi.org/10.3233/asy-191581.

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This paper deals with the relation of the dynamic elastic Cosserat rod model and the Kirchhoff beam equations. We show that the Kirchhoff beam without angular inertia is the asymptotic limit of the Cosserat rod, as the slenderness parameter (ratio between rod diameter and length) and the Mach number (ratio between rod velocity and typical speed of sound) approach zero, i.e., low-Mach-number–slenderness limit. The asymptotic framework is exact up to fourth order in the small parameter and reveals a mathematical structure that allows a uniform handling of the transition regime between the models
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Shajii, A., and J. P. Freidberg. "Theory of low Mach number compressible flow in a channel." Journal of Fluid Mechanics 313 (April 25, 1996): 131–45. http://dx.doi.org/10.1017/s0022112096002157.

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The properties of a relatively uncommon regime of fluid dynamics, low Mach number compressible flow are investigated. This regime, which is characterized by an exceptionally large channel aspect ratio L/d ∼ 106 leads to highly subsonic flows in which friction dominates inertia. Even so, because of the large aspect ratio, finite pressure, temperature, and density gradients are required, implying that compressibility effects are also important. Analytical results are presented which show, somewhat unexpectedly, that for forced channel flow, steady-state solutions exist only below a critical valu
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Turner, Stephen E., Lok C. Lam, Mohammad Faghri, and Otto J. Gregory. "Experimental Investigation of Gas Flow in Microchannels." Journal of Heat Transfer 126, no. 5 (2004): 753–63. http://dx.doi.org/10.1115/1.1797036.

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This paper presents an experimental investigation of laminar gas flow through microchannels. The independent variables: relative surface roughness, Knudsen number and Mach number were systematically varied to determine their influence on the friction factor. The microchannels were etched into silicon wafers, capped with glass, and have hydraulic diameters between 5 and 96 μm. The pressure was measured at seven locations along the channel length to determine local values of Knudsen number, Mach number and friction factor. All measurements were made in the laminar flow regime with Reynolds numbe
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Tomasini, M., N. Dolez, and J. Léorat. "Instability of a rotating shear layer in the transonic regime." Journal of Fluid Mechanics 306 (January 10, 1996): 59–82. http://dx.doi.org/10.1017/s0022112096001231.

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We have studied numerically the stability of a two-dimensional Couette flow in a polytropic fluid subjected to a localized shear, using a pseudo-spectral method (Fourier-Chebyshev). The polytropic index has been chosen equal to 2 and a radial force (pseudo-gravity) is introduced in order to perform comparisons with the shallow water experimental results. When the Reynolds number is not too low, the initial flow which is purely azimuthal becomes unstable and a stable rotating pattern is formed, with a number of azimuthal modes which decreases when the Mach number increases. A qualitative agreem
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Pröbsting, S., Y. Yang, H. Zhang, P. Li, Y. Liu, and Y. Li. "Effect of Mach number on the aeroacoustic feedback loop generating airfoil tonal noise." Physics of Fluids 34, no. 9 (2022): 094115. http://dx.doi.org/10.1063/5.0107181.

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Airfoil tonal noise emission at low-to-moderate Reynolds number and flow conditions featuring a laminar separation bubble close to the trailing edge is often related to an aeroacoustic feedback mechanism and, therefore, the Mach number is a primary parameter for the flow field and noise generation. This study experimentally explores the effect of the Mach number on airfoil tonal noise generation in the nominally incompressible flow regime. Using airfoil profiles of different chord lengths, the Mach number is varied for a constant Reynolds number. Acoustic and flow field measurements for a rang
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Beccantini, A., E. Studer, S. Gounand, et al. "Numerical simulations of a transient injection flow at low Mach number regime." International Journal for Numerical Methods in Engineering 76, no. 5 (2008): 662–96. http://dx.doi.org/10.1002/nme.2331.

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Dubrovin, Kirill, Lev Yarkov, Alexandr Zarvin, et al. "Numerical and Experimental Simulation of Supersonic Gas Outflow into a Low-Density Medium." Aerospace 11, no. 11 (2024): 905. http://dx.doi.org/10.3390/aerospace11110905.

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This study is aimed at developing methods for the experimental and numerical simulation of the outflow of underexpanded gas jets into a rarefied medium. The numerical method is based on using Navier–Stokes equations in the continuum flow regime and the direct simulation Monte Carlo method in the transitional flow regime. The experimental method includes the modeling of jet flows in the LEMPUS-2 gas-dynamic setup with electron beam diagnostics for the jet density measurements. The results of the experimental modeling for the nozzles of various diameters confirm that a key parameter determining
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Dissertations / Theses on the topic "Low Mach regime"

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Zou, Ziqiang. "A sharp interface method for low Mach two-phase flows with phase change Toward asymptotic-preserving low-Mach correction for sharp interface two-phase flows with capillary effects An Accurate Sharp Interface Method for Two-Phase Compressible Flows at Low-Mach Regime." Thesis, université Paris-Saclay, 2020. https://tel.archives-ouvertes.fr/tel-03178310.

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Une approche d'interface raide est présentée pour le calcul des écoulements diphasiques avec tension superficielle et changement de phase en régime à faible nombre de Mach. Pour développer un tel modèle, où de légers effets compressibles sont pris en compte ainsi que des fermetures thermodynamiques correctes, le liquide et le gaz sont considérés comme compressibles et décrits par un solveur compressible précis. Ce solveur compressible adopte une technique de décomposition appelée "décomposition du transport acoustique" qui décompose le système Euler en deux parties: acoustique et transport. Su
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Bourgeois, Rémi. "Contributions to the study of MHD convection : theoretical framework, finite volume methods, and pre-exascale simulations." Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASP044.

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La convection est un phénomène omniprésent dans l'univers, jouant un rôle clé dans la structure des océans, des atmosphères planétaires et stellaires. Ce travail se concentre sur les aspects théoriques et numériques de l'étude de la convection. D'abord, les méthodes "tout-régime" et "équilibre" colocalisées, basées sur un splitting d'opérateur et particulièrement adaptées aux phénomènes convectifs, sont reformulées en splitting de flux, améliorant leur flexibilité. Ensuite, une extension de cette méthode à la magnétohydrodynamique est proposée.Sa stabilité est prouvée sans recours au contrôle de
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Durand, Goyzueta Miguel Angel. "Transmisión y valoración de los conocimientos tradicionales de la “maca” Lepidium meyenii walp. (Brassicaceae) en los andes centrales del Perú y su distribución potencial." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2017. https://hdl.handle.net/20.500.12672/7234.

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Analiza los modelos de transmisión del conocimiento de la “maca” Lepidium meyenii Walp en tres distritos de la provincia de Junín, como también estudiar su aspecto biológico y áreas potenciales para su cultivo. La metodología se basa en la observación participante y búsqueda de otras especies del Lepidium a través de las caminatas etnobotánicas y entrevistas a los pobladores. Siendo los datos analizados mediante los índices de importancia cultural (IC), Valor de Uso (VU), análisis estadístico y aplicación de software de predicción. Se registra tres especies de Lepidium incluido un Lepidium mey
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Abbate, Emanuela. "Numerical methods for all-speed flows in fluid-dynamics and non-linear elasticity." Thesis, Bordeaux, 2018. http://www.theses.fr/2018BORD0409/document.

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Dans cette thèse on s’intéresse à la simulation numérique d’écoulements des matériaux compressibles, voir fluides et solides élastiques. Les matériaux considérés sont décrits avec un modèle monolithique eulérian, fermé avec une loi d’état hyperélastique qui considère les différents comportements des matériaux. On propose un nouveau schéma de relaxation qui résout les écoulements compressibles dans des différents régimes, avec des nombres de Mach très petits jusqu’à l’ordre 1. Le schéma a une formulation générale qui est la même pour tous le matériaux considérés, parce que il ne dépend pas dire
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Tayong, Boumda Rostand. "Propriétés acoustiques de systèmes incorporant des plaques micro-perforées et des matériaux absorbants sous forts niveaux d'excitation." Thesis, Dijon, 2010. http://www.theses.fr/2010DIJOS066/document.

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Ce travail de thèse a pour objectif l'étude des propriétés acoustiques de systèmes incorporant des plaques micro-perforées (MPP) et des matériaux absorbants sous forts niveaux d'excitation.Le premier chapitre traite des systèmes composés d'une MPP couplée à une cavité d'air et une paroi rigide. Un modèle analytique intégrant deux paramètres adimensionnels et un nombre de Mach optimal est présenté. La particularité de ce modèle est de décrire la variation du maximum du coefficient d'absorption (coefficient d'absorption à la résonance) avec l'augmentation du niveau d'excitation. Une formule prop
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Köhler-Rieper, Felix [Verfasser]. "On the behaviour of numerical schemes in the low Mach number regime / vorgelegt von Felix Rieper." 2008. http://d-nb.info/991260619/34.

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Books on the topic "Low Mach regime"

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Rodger, Barry, Peter Whelan, and Angus MacCulloch, eds. The UK Competition Regime. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780198868026.001.0001.

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The UK competition law regime comprises primarily the Competition Act 1998 and the Enterprise Act 2002, supplemented by provisions introduced by the Enterprise and Regulatory Reform Act 2013 and the Consumer Rights Act 2015. The foundation of the modern framework of UK competition law, the Competition Act 1998, has entered its twentieth year of operation, having come into force on 1 March 2000. Since that particular date, UK competition law has developed significantly through both decisional practice and jurisprudence. It has also undergone a process of modernisation, including both institutio
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Sarah, Nouwen. Part III Regimes and Doctrines, Ch.36 International Criminal Law: Theory All Over the Place. Oxford University Press, 2016. http://dx.doi.org/10.1093/law/9780198701958.003.0037.

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This chapter discusses the different theories employed in the field of international criminal law, which is now increasingly supported by theory. Case theories were developed after events had taken place; operational theories were produced to match complex facts; foundational theories were created to justify existing practices; external theories tried to make sense of the phenomenon of international criminal law as it had been observed; and so did the popular theories based on everyday encounters. Ago, rather than cogito, ergo sum was the field’s implicit maxim. Against this background one sti
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Vasuki, Nesiah. Part III Regimes and Doctrines, Ch.38 Theories of Transitional Justice: Cashing in the Blue Chips. Oxford University Press, 2016. http://dx.doi.org/10.1093/law/9780198701958.003.0039.

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This chapter examines the utopias called forth by the marriage of human rights accountability mechanisms on the one hand, and, on the other, arguments about the practical significance of these initiatives as preconditions for development, democracy, and political society. Transitional justice is seen to marry the ethical charge of the human rights field’s march against impunity, with an instrumental potential facilitating transition from the rule of violence into the rule of law. If the normative theories and agendas implicated by this marriage are advanced as being in the interests of justice
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Bogojević, Sanja. Climate Change Law and Policy in the European Union. Edited by Kevin R. Gray, Richard Tarasofsky, and Cinnamon Carlarne. Oxford University Press, 2016. http://dx.doi.org/10.1093/law/9780199684601.003.0029.

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This chapter is concerned with EU’s climate change law and its impact on climate change action at a global level. It investigates whether the international climate change regime ‘tightens’ its own standards so as to match EU climate change law. The corpus of EU climate change law is codified in the Climate and Energy Package, which aims to provide a comprehensive and integrated climate change framework. It includes measures promoting the use of renewable energy, specifying and thus helping to monitor and reduce greenhouse gases from fuel, setting standards for new passenger cars, establishing
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Simon, Gleeson. Part VI Bank Group Supervision, 27 Pillar 3—Disclosure Requirements. Oxford University Press, 2018. http://dx.doi.org/10.1093/law/9780198793410.003.0027.

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The Basel pillar 3 regime constitutes a disclosure regime for regulated banks. The aim is to provide sufficient transparency for investors to ensure that the price which banks pay to raise capital in the market reflects the level of risk undertaken by the bank. The pillar 3 regime was restructured in 2015, and is in the process of being further restructured. This chapter discusses the March 2017 standards which were broadly brought into force as from 2017. The most important change introduced by the 2017 standards is the formalisation of the disclosure templates. Regulators have struggled with
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Carlos, Sánchez-Mejorada y. Velasco. 11 National Report for Mexico. Oxford University Press, 2016. http://dx.doi.org/10.1093/law/9780198727293.003.0011.

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This chapter discusses the law on creditor claims in Mexico. Insolvency proceedings in Mexico aim for an orderly liquidation procedure of all of the bankrupt’s assets to allow an equally orderly distribution of proceeds among creditors under the principle of par conditio creditorum (equal treatment for all creditors). Ideally, the body of law regulating this procedure should match the insolvency law of each country, so that the process can be effected congruently and logically. However, social policies and other commercial considerations have created systems of priorities in asset distribution
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Law, capitalism and power in Asia: The rule of law and legal institutions. Routledge, 1999.

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Jayasuriya, K. Law, Capitalism and Power in Asia: The Rule of Law and Legal Institutions (Asian Capitalism). Routledge, 1999.

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Archer, Richard. Breaking a Barrier. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780190676643.003.0010.

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Had Massachusetts legislators been aware of how many mixed marriages existed in their state (and in their region, for that matter), they may not have repealed the law. In their own lives they may have encountered or heard of a couple with mixed ancestry, but that would have been rare. Their experience reinforced the idea that people of African descent and people of European descent preferred to live among their "kind." Even if they didn't find each other physically repugnant, they still had no desire to intermarry. But observations and hearsay did not match reality. During the antebellum perio
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Law, Capitalism and Power in Asia: The Rule of Law and Legal Institutions (Asian Capitalism). Routledge, 1999.

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Book chapters on the topic "Low Mach regime"

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Machover, Daniel. "9. Israeli Apartheid: A Matter of Law." In For Palestine. Open Book Publishers, 2023. http://dx.doi.org/10.11647/obp.0345.10.

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Israel’s rule over the Palestinian people may be characterized as a regime of apartheid, with its individual actions constituting crimes of apartheid. I was one of the legal advisers to the Russell Tribunal On Palestine (RTOP or ‘Russell Tribunal’) which convened on six occasions, not all of which I was able to assist with (from March 2010 to September 2014) (http://www.russelltribunalonpalestine.com/en/index.html). The third session was held in Cape Town in November 2011 and what I will set out in this chapter is an updated summary of the RTOP’s findings – available in full but not updated vi
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Corsi, Cosimo, Bei Wang, Julien Weiss, and Ha Duong Ngo. "Development of a PVDF Piezo-Film Sensor for Unsteady Wall-Pressure Measurements in SBLIs." In Notes on Numerical Fluid Mechanics and Multidisciplinary Design. Springer Nature Switzerland, 2025. https://doi.org/10.1007/978-3-031-86605-0_4.

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Abstract An innovative, flexible wall-pressure sensor array for unsteady flow conditions has been developed and evaluated in a turbulent shockwave-boundary layer interaction (SBLI) setup at Mach 2. Compared to the previous version, the new sensor’s flexibility makes it easier to fit on different surfaces, while offering enhanced durability and improved sensitivity. The array comprises 18 circular sensors, each with a diameter of $$3\,{\text {mm}}$$ 3 mm , fabricated using screen printing techniques from a thin piezoelectric PVDF film (thickness: $$110\,\upmu {\text {m}}$$ 110 μ m ). Remarkably
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Barros-Guerton, J., and J. M. Ezquiaga-Domínguez. "Urban Regions Under Stress: The Case of Madrid After the Lockdown." In The Urban Book Series. Springer Nature Switzerland, 2025. https://doi.org/10.1007/978-3-031-77752-3_16.

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Abstract Urban density, mobility, and revenue disparity are relevant factors in terms of urban analysis and project. The COVID-19 pandemic declared in March 2020 has meant a stress test for urban regions, as the alteration of mobility patterns led to changes in social dynamics. This paper investigates the correlations between the evolution of the disease and these three factors. The analysis focuses on the Madrid Urban Region, in Spain, and uses open data available from cadastral, census, and health-related official websites. This use of public information also provides a test on how such inpu
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Henry, Charlotte. "The UK’s Senior Managers, Certification and Conduct Regime." In Brexit and Financial Regulation. Oxford University Press, 2020. http://dx.doi.org/10.1093/law/9780198840794.003.0009.

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Abstract The SMCR regime was first introduced in the UK for banks in March 2016 and is being rolled out to all other financial services firms with effect from 9 December 2019. This chapter focuses primarily on financial services firms that are banks covering the different layers of complexity that a no-deal Brexit will bring to the SMCR requirements. In particular, the chapter covers the difficult position firms may find themselves in when opting into the TPR where the PRA and FCA have adopted different approaches. When entering the TPR, these firms will need to implement a hybrid SMCR regime
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Modarres, MohammadReza, and Miguel Almeida. "Application of the Computational Fluid Dynamics in Forest Fires Investigations for Mitigation of the Wildland-Urban Interface Fires’ Risks." In Advances in Forest Fire Research 2022. Imprensa da Universidade de Coimbra, 2022. http://dx.doi.org/10.14195/978-989-26-2298-9_83.

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Realistic modeling of the vegetation fires based on reliable data from laboratory experiments is a key factor in the prediction of the fire dynamics ‎behavior and its spread rate in wildlands. A robust understating of the fire behavior in different species can provide a pragmatic insight to take precautionary steps to mitigate the fire risks in Wildland-urban interfaces. Computational Fluid Dynamics (CFD) modeling of ‎wildland fires ‎offers a considerably high load of information needed for engineers and policymakers. This paper addresses the numerical modeling of common Ivy (Hedera heli
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"The administrative law regime: reining in an unruly bureaucracy." In China's Long March toward Rule of Law. Cambridge University Press, 2002. http://dx.doi.org/10.1017/cbo9780511493737.010.

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Hilary, Stonefrost. "Directors’ Functions and Duties in Insolvency Proceedings." In Company Directors. Oxford University Press, 2024. http://dx.doi.org/10.1093/law/9780192842879.003.0033.

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This chapter discusses the functions and duties of directors in insolvency proceedings. It cites the provisions of the Insolvency Act as amended and associated case law, which particularly affects the functions and duties of directors. The inception of insolvency proceedings and its effects on directors’ powers and directors’ duties provide information about the company’s affairs and assist in investigation procedures under the Insolvency Act. In March 2020, a standalone moratorium became a permanent feature of the insolvency regime in response to the economic and financial impact of COVID-19.
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Whish, Richard. "Horizontal Agreements." In The UK Competition Regime. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780198868026.003.0002.

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Chapter 2 considers the application of the Competition Act 1998 to ‘Horizontal Agreements’, and in particular to cartel behaviour, since that piece of legislation entered into force on 1 March 2000. It is a tour de force of the enforcement practice. The chapter notes that early years of the legislation were somewhat disappointing, with a fairly low level of enforcement, although the OFT did score success with pioneering investigations of so-called ‘hub and spoke’ cartels in the Football Shirts and Toys and Games cases. From about 2006 onwards there were more decisions from the OFT, and some of
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Vandenberghe, Vincent. "Differentiating Retirement Age to Compensate for Health and Longevity Inequality?" In Ageing without Ageism? Oxford University PressOxford, 2023. http://dx.doi.org/10.1093/oso/9780192894090.003.0015.

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Abstract Historically, a uniform age was used to proxy work capacity loss and trigger the payment of pensions. Recently, many have argued that we need several retirement ages to better match the distribution of work (in)capacity across socio-demographic groups. At first sight, the proposal makes perfect sense. Work capacity declines faster among low-income or low-educated individuals. But there is also a lot of unaccounted heterogeneity, even inside narrowly defined socio-economic groups. And this compromises the feasibility and desirability of retirement age differentiation. Under a regime of
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Rodrigo, Olivares-Caminal, Guynn Randall D, Kornberg Alan W, Paterson Sarah, and Singh Dalvinder. "Part II Bank Resolution, 8 Resolution of US Banks and Other Financial Institutions." In Debt Restructuring. Oxford University Press, 2022. http://dx.doi.org/10.1093/law/9780192848109.003.0008.

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Chapter 8 provides an overview of the resolution regimes under US law applicable to (i) banks; (ii) Fannie Mae, Freddie Mac, and the Federal Home Loan Banks (government-sponsored enterprises or GSEs); and (iii) systemically important financial institutions. This chapter includes a detailed summary of the applicable resolution regimes, as well as a summary of the development of US resolution authority over time, from the establishment of the Federal Deposit Insurance Corporation (FDIC) in the early twentieth century to the creation in the early twenty-first century of a resolution statute for G
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Conference papers on the topic "Low Mach regime"

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Wang, Xing, Anand Saxena, and Inderjit Chopra. "Measurement and Validation of a Mach-Scale Rotor Performance and Loads at High Advance Ratios." In Vertical Flight Society 72nd Annual Forum & Technology Display. The Vertical Flight Society, 2016. http://dx.doi.org/10.4050/f-0072-2016-11436.

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Reducing the rotor tip speed by slowing down the rotor in forward flight is a viable means of extending the cruise speed of a compound helicopter. However, in a high advance ratio flight regime, many aerodynamic phenomena remain unclear, including the thrust reversal and the dynamic stall that occurs in the reverse flow region of the retreating blade. In order to investigate the performance and vibratory loads characteristics of a high advance ratio rotor, wind tunnel tests were conducted with a Mach-scale 4-blade articulated rotor at 900 RPM, up to advance ratio 1.15. Hub loads, control angle
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Jain, Nishan, and James Baeder. "Assessment of Turbulence Model Length Scales based on Hybrid RANS-LES Modeling of Unsteady Flow Over Airfoil." In Vertical Flight Society 72nd Annual Forum & Technology Display. The Vertical Flight Society, 2016. http://dx.doi.org/10.4050/f-0072-2016-11393.

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Current work investigates the sensitivity of DES type hybrid methods toward turbulence length scales and anisotropy of grid. Different length scales available from literature are implemented into a compressible, finite volume GPU accelerated Navier-Stokes solver. A novel length scale is proposed based on the properties of available length scales and the grid requirements in mildly separated flows. Predictive capabilities of RANS and DDES method with the conventional and proposed length scales is assessed by conducting static and dynamic stall simulations on SC1095 and modified VR12 airfoils. T
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Jadab, Chitaranjan, Romesh Chandra, Khuban Lateef Khan, Amitava Roy, Sandeep Singh, and Sai Kiran Panda. "Analysis of Field Variation in Low Magnetic Field Regime among RBWOs." In 2024 Second International Conference on Microwave, Antenna and Communication (MAC). IEEE, 2024. https://doi.org/10.1109/mac61551.2024.10837454.

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Smith, Luke, Andrew Lind, André Bauknecht, Xing Wang, and Anya Jones. "Three-Component Reverse Flow Measurements on a Mach-Scale Rotor at High Advance Ratios." In Vertical Flight Society 80th Annual Forum & Technology Display. The Vertical Flight Society, 2024. http://dx.doi.org/10.4050/f-0074-2018-12693.

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Reverse flow is the source of several unsteady effects that complicate load predictions for high advance ratio rotorcraft. As a way of improving load predictions, an ongoing series of experiments has been aimed at gaining a physical understanding of the unsteady aerodynamics of the reverse flow region. The current work contributes phase-averaged, three-component velocity field measurements collected on a rotor at high advance ratios. Stereoscopic particle image velocitmetry (PIV) was performed on a Mach-scale rotor across three advance ratios (0:6 ≤ μ ≤ 0:8), three radial stations (0:3 ≤ r/R ≤
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Beccantini, A., C. Phan, and C. Corre. "Bubble Expansion Computations at Low-Mach Number Regime." In 14th WCCM-ECCOMAS Congress. CIMNE, 2021. http://dx.doi.org/10.23967/wccm-eccomas.2020.078.

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Murthy, S. N. B., and P. Czysz. "Energy Analysis of High Speed Vehicles in Low Mach Flight Regime." In Aerospace Atlantic Conference & Exposition. SAE International, 1990. http://dx.doi.org/10.4271/900995.

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Dinh, Nam, G. J. Li, and Theofanis Theofanous. "An Investigation of Droplet Breakup in a High Mach, Low Weber Number Regime." In 41st Aerospace Sciences Meeting and Exhibit. American Institute of Aeronautics and Astronautics, 2003. http://dx.doi.org/10.2514/6.2003-317.

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Vega, Almudena, and Roque Corral. "Physics of Vibrating Airfoils at Low Reduced Frequency." In ASME Turbo Expo 2013: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/gt2013-94906.

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The unsteady aerodynamics of low pressure turbine vibrating airfoils in flap mode is studied in detail using a frequency domain linearized Navier-Stokes solver. Both the travelling-wave and influence coefficient formulations of the problem are used to highlight key aspects of the physics and understand different trends such as the effect of reduced frequency and Mach number. The study is focused in the low-reduced frequency regime which is of paramount relevance for the design of aeronautical low-pressure turbines and compressors. It is concluded that the effect of the Mach number on the unste
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Jennerjohn Christianer, Mary K., Mark McQuilling, and Craig W. McKeever. "Investigation of Endwall Secondary Flows in a Low Aspect Ratio Transonic Turbine, Part II: Passage Oblique Shock." In ASME Turbo Expo 2024: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2024. http://dx.doi.org/10.1115/gt2024-125281.

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Abstract With increasing exit Mach number through the transonic regime, increased losses in a turbine can be incurred due to the increase in shock losses. The transonic regime is specifically of interest as it exhibits both a loss bucket behavior as well as the potential for unique trailing edge shedding modes at midspan. As for the endwall secondary flows, there can be increased losses due to the increase in shock interactions with endwall secondary vortices. In this second part of the two part series, the variation in exit isentropic Mach number varied up to 1.15 where the endwall secondary
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Lepicovsky, J., E. P. Braunscheidel, R. J. Bruckner, and D. L. Tweedt. "Laser Velocimeter Measurements of Axial Velocity Field in the NASA Supersonic Fan Rotor." In ASME Turbo Expo 2001: Power for Land, Sea, and Air. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/2001-gt-0333.

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An analysis of laser Doppler velocimeter (LDV) data for the axial velocity flowfield in the rotor of the Mach 2 inlet flow supersonic throughflow fan (SSTF) is presented in this paper. The paper starts with a short description of the SSTF test package to highlight the specifics of the SSTF operation. It is followed by a detailed description of a dedicated LDV system for measurement in a supersonic throughflow fan and the experience gained. Most of the experimental data presented were acquired in a low supersonic throughflow regime (inlet Mach number of 1.4). The results and conclusions present
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Reports on the topic "Low Mach regime"

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Ruiz, Susana. ¿Quién paga la cuenta? Gravar la riqueza para enfrentar la crisis de la COVID-19 en América Latina y el Caribe. Oxfam, 2020. http://dx.doi.org/10.21201/2020.6317.

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Las previsiones de retroceso económico y social en América Latina y el Caribe son alarmantes. La COVID-19 golpea con fuerza la región marcada que tendrá que afrontar una contracción del 9,4%, una de las más severas en todo el planeta. La desigualdad, la informalidad y la insuficiente dotación sanitaria lastran las posibilidades de hacer frente a la pandemia. Pero son los más vulnerables quienes asumen el costo, hasta 52 millones de personas que podrían caer en la pobreza y 40 millones podrían perder sus empleos, un retroceso de 15 años para la región. Pero la COVID-19 no afecta a todos por igu
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Klesta, Matthew. Community Issues and Insights 2025: Inflation Continues to Strain Households' Budgets. Federal Reserve Bank of Cleveland, 2025. https://doi.org/10.26509/frbc-cd-20250605.

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The Federal Reserve Bank of Cleveland's Community Issues Survey (CIS) collects information semiannually from direct service providers to monitor economic conditions and identify issues impacting low- and moderate-income (LMI) households in the Fourth District, a region that includes Ohio, western Pennsylvania, eastern Kentucky, and the northern panhandle of West Virginia. On March 3-17, 2025, we surveyed nearly 550 organizations that directly serve LMI individuals and communities across our District and received 104 responses (19 percent response rate). The results of this survey are summarize
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Klesta, Matthew. Inflation remains a burden and consumer debt is on the rise. Federal Reserve Bank of Cleveland, 2023. http://dx.doi.org/10.26509/frbc-cd-20230523.

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The Federal Reserve Bank of Cleveland's Community Issues Survey (CIS) collects information semiannually from direct service providers to monitor economic conditions and identify issues impacting low- and moderate-income (LMI) households in the Fourth District—a region that includes Ohio, western Pennsylvania, eastern Kentucky, and the northern panhandle of West Virginia. In March 2023, we surveyed more than 600 service providers who directly serve LMI individuals and communities across our District and received 95 responses (15 percent response rate). The results of this survey, summarized her
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Klesta, Matthew. Community Issues and Insights 2024: A Record-High Share of Respondents Observed a Decline in Affordable Housing. Federal Reserve Bank of Cleveland, 2024. http://dx.doi.org/10.26509/frbc-cd-20240510.

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The Federal Reserve Bank of Cleveland's Community Issues Survey (CIS) collects information semiannually from direct service providers to monitor economic conditions and identify issues impacting low- and moderate-income (LMI) households in the Fourth District, a region that includes Ohio, western Pennsylvania, eastern Kentucky, and the northern panhandle of West Virginia. In March 2024, we surveyed nearly 600 organizations that directly serve LMI individuals and communities across our District and received 100 responses (17 percent response rate). The results of this survey are summarized here
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Romero Ramírez, Álvaro Fernando, and Felipe Eugenio Mora Parra. Plan estratégico y prospectivo del municipio de la Plata Huila como eje regional de desarrollo de turismo sostenible 2020 – 2030. Universidad Nacional Abierta y a Distancia, 2021. http://dx.doi.org/10.22490/ecacen.5439.

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El turismo en Colombia, es un sector importante en la economía; el departamento del Huila posee un potencial alto de desarrollo en este sector; este trabajo se realizó en el municipio de La Plata, en un ámbito de desarrollo turístico sostenible; entendiendo esto como el equilibrio entre el sector privado, publico, académico y la comunidad. El objetivo del presente trabajo fue estructurar el plan estratégico y prospectivo del municipio de La Plata Huila para convertirlo como eje regional de desarrollo en el turismo sostenible 2020 – 2030. Para esto se utilizaron los métodos de prospectiva estra
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Ocampo-Gaviria, José Antonio, Roberto Steiner Sampedro, Mauricio Villamizar Villegas, et al. Report of the Board of Directors to the Congress of Colombia - March 2023. Banco de la República de Colombia, 2023. http://dx.doi.org/10.32468/inf-jun-dir-con-rep-eng.03-2023.

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Banco de la República is celebrating its 100th anniversary in 2023. This is a very significant anniversary and one that provides an opportunity to highlight the contribution the Bank has made to the country’s development. Its track record as guarantor of monetary stability has established it as the one independent state institution that generates the greatest confidence among Colombians due to its transparency, management capabilities, and effective compliance with the central banking and cultural responsibilities entrusted to it by the Constitution and the Law. On a date as important as this,
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Pfund, Alicia. Jurisprudence of Equality Project (JEP): Consolidated Report Based on the Evaluations in Argentina, Brazil, Chile, Uruguay. Inter-American Development Bank, 2000. http://dx.doi.org/10.18235/0008927.

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The Jurisprudence of Equality project (JEP) trains judges and other judicial actors on the applicability of international women's rights law in domestic courts, thus enhancing their ability to treat cases of violence against women and ensuring greater protection for women's rights in the region. The purpose of this report is to distill the findings and conclusions from the JEP evaluation in Argentina, Brazil, Chile and Uruguay. This evaluation was meant to find out to which extent the project is being implemented as planned, identifying any difficulties during implementation, and ways to overc
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Jones, Theresa, and Elisabeth Storer. Key Considerations: Adherence to COVID-19 Preventive Measures in Greater Kampala, Uganda. Institute of Development Studies (IDS), 2022. http://dx.doi.org/10.19088/sshap.2022.005.

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This brief sets out key considerations for risk communications and community engagement (RCCE) to promote adherence to COVID-19 preventive measures in greater Kampala, Uganda. It looks at adherence to COVID-19 preventive measures, assesses the challenges to their adoption and outlines key considerations for partners working in RCCE and the wider COVID-19 emergency response. The brief responds to concern (as of March 2022) about COVID-19 transmission in informal urban areas in Uganda due to their high population density, limited sanitary infrastructure, and reported low uptake of vaccination. E
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Vargas-Herrera, Hernando, Juan Jose Ospina-Tejeiro, Carlos Alfonso Huertas-Campos, et al. Monetary Policy Report - April de 2021. Banco de la República de Colombia, 2021. http://dx.doi.org/10.32468/inf-pol-mont-eng.tr2-2021.

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1.1 Macroeconomic summary Economic recovery has consistently outperformed the technical staff’s expectations following a steep decline in activity in the second quarter of 2020. At the same time, total and core inflation rates have fallen and remain at low levels, suggesting that a significant element of the reactivation of Colombia’s economy has been related to recovery in potential GDP. This would support the technical staff’s diagnosis of weak aggregate demand and ample excess capacity. The most recently available data on 2020 growth suggests a contraction in economic activity of 6.8%, lowe
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