George Karniadakis and Spencer Sherwin
- Published in print:
- 2005
- Published Online:
- September 2007
- ISBN:
- 9780198528692
- eISBN:
- 9780191713491
- Item type:
- book
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/acprof:oso/9780198528692.001.0001
- Subject:
- Mathematics, Numerical Analysis
Spectral methods have long been popular in direct and large eddy simulation of turbulent flows, but their use in areas with complex-geometry computational domains has historically been much more ...
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Spectral methods have long been popular in direct and large eddy simulation of turbulent flows, but their use in areas with complex-geometry computational domains has historically been much more limited. More recently, the need to find accurate solutions to the viscous flow equations around complex configurations has led to the development of high-order discretization procedures on unstructured meshes, which are also recognized as more efficient for solution of time-dependent oscillatory solutions over long time periods. This book, an updated edition on the original text, presents the recent and significant progress in multi-domain spectral methods at both the fundamental and application level. Containing material on discontinuous Galerkin methods, non-tensorial nodal spectral element methods in simplex domains, and stabilization and filtering techniques, this text introduces the use of spectral/hp element methods with particular emphasis on their application to unstructured meshes. It provides a detailed explanation of the key concepts underlying the methods along with practical examples of their derivation and application.Less
Spectral methods have long been popular in direct and large eddy simulation of turbulent flows, but their use in areas with complex-geometry computational domains has historically been much more limited. More recently, the need to find accurate solutions to the viscous flow equations around complex configurations has led to the development of high-order discretization procedures on unstructured meshes, which are also recognized as more efficient for solution of time-dependent oscillatory solutions over long time periods. This book, an updated edition on the original text, presents the recent and significant progress in multi-domain spectral methods at both the fundamental and application level. Containing material on discontinuous Galerkin methods, non-tensorial nodal spectral element methods in simplex domains, and stabilization and filtering techniques, this text introduces the use of spectral/hp element methods with particular emphasis on their application to unstructured meshes. It provides a detailed explanation of the key concepts underlying the methods along with practical examples of their derivation and application.
Jean-Frédéric Gerbeau, Claude Le Bris, and Tony Lelièvre
- Published in print:
- 2006
- Published Online:
- September 2007
- ISBN:
- 9780198566656
- eISBN:
- 9780191718014
- Item type:
- book
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/acprof:oso/9780198566656.001.0001
- Subject:
- Mathematics, Mathematical Physics
This text focuses on mathematical and numerical techniques for the simulation of magnetohydrodynamic phenomena, with an emphasis on the magnetohydrodynamics of liquid metals, on two-fluid flows, and ...
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This text focuses on mathematical and numerical techniques for the simulation of magnetohydrodynamic phenomena, with an emphasis on the magnetohydrodynamics of liquid metals, on two-fluid flows, and on a prototypical industrial application. The approach is a highly mathematical one, based on the rigorous analysis of the equations at hand, and a solid numerical analysis of the discretization methods. Up-to-date techniques, both on the theoretical side and the numerical side, are introduced to deal with the nonlinearities of the multifluid magnetohydrodynamics equations. At each stage of the exposition, examples of numerical simulations are provided, first on academic test cases to illustrate the approach, next on benchmarks well documented in the professional literature, and finally on real industrial cases. The simulation of aluminium electrolysis cells is used as a guideline throughout the book to motivate the study of a particular setting of the magnetohydrodynamics equations.Less
This text focuses on mathematical and numerical techniques for the simulation of magnetohydrodynamic phenomena, with an emphasis on the magnetohydrodynamics of liquid metals, on two-fluid flows, and on a prototypical industrial application. The approach is a highly mathematical one, based on the rigorous analysis of the equations at hand, and a solid numerical analysis of the discretization methods. Up-to-date techniques, both on the theoretical side and the numerical side, are introduced to deal with the nonlinearities of the multifluid magnetohydrodynamics equations. At each stage of the exposition, examples of numerical simulations are provided, first on academic test cases to illustrate the approach, next on benchmarks well documented in the professional literature, and finally on real industrial cases. The simulation of aluminium electrolysis cells is used as a guideline throughout the book to motivate the study of a particular setting of the magnetohydrodynamics equations.
Rosalind James and Theresa L. Pitts-Singer (eds)
- Published in print:
- 2008
- Published Online:
- September 2008
- ISBN:
- 9780195316957
- eISBN:
- 9780199871575
- Item type:
- book
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/acprof:oso/9780195316957.001.0001
- Subject:
- Biology, Animal Biology, Plant Sciences and Forestry
Bees play a vital role as pollinators for many agricultural crops. This book discusses the interplay between bees, agriculture, and the environment. Although honey bees are well recognized as ...
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Bees play a vital role as pollinators for many agricultural crops. This book discusses the interplay between bees, agriculture, and the environment. Although honey bees are well recognized as pollinators, managed bumble bees and solitary bees are also critical for the successful pollination of certain crops, while wild bees provide a free service. As bees liberally pass pollen from one plant to the next, they also impact the broader ecosystem, and not always to the benefit of humankind. Bees can enhance the unintentional spread of genes from genetically engineered plants, and may increase the spread of invasive weeds. Conversely, genetically engineered plants can impact pollinators, and invasive weeds can supply new sources of food for these insects. Bees' flower-visiting activities also can be exploited to spread biological control agents that help to control crop pests. Bee pollination is important for production of native plants used for restoration of wild lands. Managing bees for pollination is complex and must consider bee natural history, physiology, pathology, and behavior. Furthermore, transporting bees from native ranges to new areas for pollination services can be controversial, and should be done only after assuring that a non-native bee introduction will not disrupt the ecosystem. Even though bees are small, unobtrusive creatures, they play large roles in the ecosystem. The connection between bees and humankind is symbolic of a broader interconnection between humans and the natural world.Less
Bees play a vital role as pollinators for many agricultural crops. This book discusses the interplay between bees, agriculture, and the environment. Although honey bees are well recognized as pollinators, managed bumble bees and solitary bees are also critical for the successful pollination of certain crops, while wild bees provide a free service. As bees liberally pass pollen from one plant to the next, they also impact the broader ecosystem, and not always to the benefit of humankind. Bees can enhance the unintentional spread of genes from genetically engineered plants, and may increase the spread of invasive weeds. Conversely, genetically engineered plants can impact pollinators, and invasive weeds can supply new sources of food for these insects. Bees' flower-visiting activities also can be exploited to spread biological control agents that help to control crop pests. Bee pollination is important for production of native plants used for restoration of wild lands. Managing bees for pollination is complex and must consider bee natural history, physiology, pathology, and behavior. Furthermore, transporting bees from native ranges to new areas for pollination services can be controversial, and should be done only after assuring that a non-native bee introduction will not disrupt the ecosystem. Even though bees are small, unobtrusive creatures, they play large roles in the ecosystem. The connection between bees and humankind is symbolic of a broader interconnection between humans and the natural world.
Juan Luis Vazquez
- Published in print:
- 2006
- Published Online:
- September 2007
- ISBN:
- 9780198569039
- eISBN:
- 9780191717468
- Item type:
- book
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/acprof:oso/9780198569039.001.0001
- Subject:
- Mathematics, Mathematical Physics
The heat equation is one of the three classical linear partial differential equations of second order that form the basis of any elementary introduction to the area of PDEs, and only recently has it ...
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The heat equation is one of the three classical linear partial differential equations of second order that form the basis of any elementary introduction to the area of PDEs, and only recently has it come to be fairly well understood. This book provides a presentation of the mathematical theory of the nonlinear heat equation usually called the Porous Medium Equation (PME). This equation appears in a number of physical applications, such as to describe processes involving fluid flow, heat transfer, or diffusion. Other applications have been proposed in mathematical biology, lubrication, boundary layer theory, and other fields. Each chapter contains a detailed introduction and is supplied with a section of notes, providing comments, historical notes or recommended reading, and exercises.Less
The heat equation is one of the three classical linear partial differential equations of second order that form the basis of any elementary introduction to the area of PDEs, and only recently has it come to be fairly well understood. This book provides a presentation of the mathematical theory of the nonlinear heat equation usually called the Porous Medium Equation (PME). This equation appears in a number of physical applications, such as to describe processes involving fluid flow, heat transfer, or diffusion. Other applications have been proposed in mathematical biology, lubrication, boundary layer theory, and other fields. Each chapter contains a detailed introduction and is supplied with a section of notes, providing comments, historical notes or recommended reading, and exercises.
John R. B. Lighton
- Published in print:
- 2008
- Published Online:
- September 2008
- ISBN:
- 9780195310610
- eISBN:
- 9780199871414
- Item type:
- chapter
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/acprof:oso/9780195310610.003.0012
- Subject:
- Biology, Animal Biology, Biotechnology
This chapter describes methods for validating the measurements made using flow-through respirometry. These methods include the injection of nitrogen at a known flow rate into a respirometry system; ...
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This chapter describes methods for validating the measurements made using flow-through respirometry. These methods include the injection of nitrogen at a known flow rate into a respirometry system; burning a small flame of ethanol or methanol at a rate measured by weighing the lamp (often called “alcohol recovery”); and burning hydrocarbon gases such as methane, ethane, or propane. The first two techniques yield information on absolute oxygen consumption rates; the gas flame technique yields information on ratios between oxygen consumption and carbon dioxide production, as does the alcohol recovery technique. Full practical details including all relevant equations are given.Less
This chapter describes methods for validating the measurements made using flow-through respirometry. These methods include the injection of nitrogen at a known flow rate into a respirometry system; burning a small flame of ethanol or methanol at a rate measured by weighing the lamp (often called “alcohol recovery”); and burning hydrocarbon gases such as methane, ethane, or propane. The first two techniques yield information on absolute oxygen consumption rates; the gas flame technique yields information on ratios between oxygen consumption and carbon dioxide production, as does the alcohol recovery technique. Full practical details including all relevant equations are given.
C. Neal Stewart
- Published in print:
- 2004
- Published Online:
- September 2007
- ISBN:
- 9780195157451
- eISBN:
- 9780199790388
- Item type:
- book
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/acprof:oso/9780195157451.001.0001
- Subject:
- Biology, Biotechnology
From years prior to the release of the first commercial transgenic crop in 1995 to the present, many concerned activists, regulators, and scientists have questioned how genetic engineering might ...
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From years prior to the release of the first commercial transgenic crop in 1995 to the present, many concerned activists, regulators, and scientists have questioned how genetic engineering might impact the environment. No measurable negative environmental impacts have been observed for commercial genetically modified crops to date, even though several risks have been identified in experimental releases. Even so, none have approached doomsday scenarios posed by activists. The risks that have been extensively studied are gene flow from crops to weeds or crop landraces; side-effects of insecticidal transgenic proteins, such as accidental killing of monarch butterflies or beneficial insects; viral recombination; and transgene combinations. Close examination has uncovered no negative effects, but plenty of positive environmental impacts from growing crops engineered for insect resistance and herbicide resistance. Insect resistant cotton and corn kill only the insects that attempt to eat the crops and have saved several million gallons of chemical insecticide applications. Herbicide resistant soybean and corn have helped in soil conservation efforts since farmers do not have to use as much tillage to control weeds. In addition to these benefits, scientists are conducting research to produce genetically engineered plants to clean up toxins, produce plastics and biofuels, and perform other ecological services. The responsible use of genetic engineering is part of sustainable agriculture now and in the future.Less
From years prior to the release of the first commercial transgenic crop in 1995 to the present, many concerned activists, regulators, and scientists have questioned how genetic engineering might impact the environment. No measurable negative environmental impacts have been observed for commercial genetically modified crops to date, even though several risks have been identified in experimental releases. Even so, none have approached doomsday scenarios posed by activists. The risks that have been extensively studied are gene flow from crops to weeds or crop landraces; side-effects of insecticidal transgenic proteins, such as accidental killing of monarch butterflies or beneficial insects; viral recombination; and transgene combinations. Close examination has uncovered no negative effects, but plenty of positive environmental impacts from growing crops engineered for insect resistance and herbicide resistance. Insect resistant cotton and corn kill only the insects that attempt to eat the crops and have saved several million gallons of chemical insecticide applications. Herbicide resistant soybean and corn have helped in soil conservation efforts since farmers do not have to use as much tillage to control weeds. In addition to these benefits, scientists are conducting research to produce genetically engineered plants to clean up toxins, produce plastics and biofuels, and perform other ecological services. The responsible use of genetic engineering is part of sustainable agriculture now and in the future.
Herman Cappelen and John Hawthorne
- Published in print:
- 2009
- Published Online:
- January 2009
- ISBN:
- 9780199560554
- eISBN:
- 9780191720963
- Item type:
- book
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/acprof:oso/9780199560554.001.0001
- Subject:
- Philosophy, General
Relativism has dominated many intellectual circles, past and present, but the 20th century saw it banished to the fringes of mainstream analytic philosophy. Of late, however, it is making something ...
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Relativism has dominated many intellectual circles, past and present, but the 20th century saw it banished to the fringes of mainstream analytic philosophy. Of late, however, it is making something of a comeback within that loosely configured tradition, a comeback that attempts to capitalize on some important ideas in foundational semantics. This book aims not merely to combat analytic relativism but also to combat the foundational ideas in semantics that led to its revival. Doing so requires a proper understanding of the significance of possible worlds semantics, an examination of the relation between truth and the flow of time, an account of putatively relevant data from attitude and speech act reporting, and a careful treatment of various operators. This book contrasts relativism with a view according to which the contents of thought and talk are propositions that instantiate the fundamental monadic properties of truth simpliciter and falsity simpliciter. Such propositions, it argues, are the semantic values of sentences (relative to context), the objects of illocutionary acts, and, unsurprisingly, the objects of propositional attitudes.Less
Relativism has dominated many intellectual circles, past and present, but the 20th century saw it banished to the fringes of mainstream analytic philosophy. Of late, however, it is making something of a comeback within that loosely configured tradition, a comeback that attempts to capitalize on some important ideas in foundational semantics. This book aims not merely to combat analytic relativism but also to combat the foundational ideas in semantics that led to its revival. Doing so requires a proper understanding of the significance of possible worlds semantics, an examination of the relation between truth and the flow of time, an account of putatively relevant data from attitude and speech act reporting, and a careful treatment of various operators. This book contrasts relativism with a view according to which the contents of thought and talk are propositions that instantiate the fundamental monadic properties of truth simpliciter and falsity simpliciter. Such propositions, it argues, are the semantic values of sentences (relative to context), the objects of illocutionary acts, and, unsurprisingly, the objects of propositional attitudes.
Michael S. Long and Thomas A. Bryant
- Published in print:
- 2007
- Published Online:
- January 2008
- ISBN:
- 9780195301465
- eISBN:
- 9780199867288
- Item type:
- book
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/acprof:oso/9780195301465.001.0001
- Subject:
- Economics and Finance, Financial Economics
A closely held firm is not a smaller version of a large public firm, anymore than a child is a miniature adult. While realizing that like large corporations, value comes from a business' ability to ...
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A closely held firm is not a smaller version of a large public firm, anymore than a child is a miniature adult. While realizing that like large corporations, value comes from a business' ability to generate future cash flows, this book emphasize the differences between the two. The primary question is does a separate entity exist or is the business just an extension of its principal owner or manager? If yes, how does this business vary from a large publicly traded firm with market and not management control? This book gets to the fundamental differences between the two and the adjustments made to value correctly. It avoids the traditional multiples of earnings or multiple of sales and other cookie-cutter approaches, to focus on the basic ability to create value. The book also avoids specifics in tax laws as they change and vary between countries.Less
A closely held firm is not a smaller version of a large public firm, anymore than a child is a miniature adult. While realizing that like large corporations, value comes from a business' ability to generate future cash flows, this book emphasize the differences between the two. The primary question is does a separate entity exist or is the business just an extension of its principal owner or manager? If yes, how does this business vary from a large publicly traded firm with market and not management control? This book gets to the fundamental differences between the two and the adjustments made to value correctly. It avoids the traditional multiples of earnings or multiple of sales and other cookie-cutter approaches, to focus on the basic ability to create value. The book also avoids specifics in tax laws as they change and vary between countries.
Jerome L. Stein and Polly Reynolds Allen
- Published in print:
- 1998
- Published Online:
- November 2003
- ISBN:
- 9780198293064
- eISBN:
- 9780191596940
- Item type:
- book
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/0198293062.001.0001
- Subject:
- Economics and Finance, Macro- and Monetary Economics, International
The NATREX approach offers an alternative paradigm to the Purchasing Power Parity for equilibrium real exchange rates. NATREX is the acronym for NATural Real EXchange, referring to a medium‐run, ...
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The NATREX approach offers an alternative paradigm to the Purchasing Power Parity for equilibrium real exchange rates. NATREX is the acronym for NATural Real EXchange, referring to a medium‐run, inter‐cyclical equilibrium real exchange rate, determined by real, fundamental factors. Importantly, the NATREX is a moving equilibrium real exchange rate, responding to continual changes in exogenous and endogenous real fundamentals. In a world of high capital mobility, the fundamentals of thrift, productivity, capital intensity, and net debt to foreigners become particularly important, influencing desired long‐term capital flows and altering the equilibrium real exchange rate. The NATREX approach identifies and models the fundamental determinants of equilibrium real exchange rates, consistent with their recent empirical movements in various countries.The NATREX model is a dynamic stock‐flow growth model. The goal of the NATREX approach is primarily empirical – to explain movements of medium‐ to long‐run real exchange rates in terms of the fundamental real variables of thrift and productivity, assuming that real exchange rates do adjust toward their equilibrium level, although with a lag. A family of consistent general equilibrium models – of rational, optimizing behavior, determining medium‐run equilibrium real exchange rates – forms the core of the NATREX approach. These models provide logical economic justifications for the empirical results.Less
The NATREX approach offers an alternative paradigm to the Purchasing Power Parity for equilibrium real exchange rates. NATREX is the acronym for NATural Real EXchange, referring to a medium‐run, inter‐cyclical equilibrium real exchange rate, determined by real, fundamental factors. Importantly, the NATREX is a moving equilibrium real exchange rate, responding to continual changes in exogenous and endogenous real fundamentals. In a world of high capital mobility, the fundamentals of thrift, productivity, capital intensity, and net debt to foreigners become particularly important, influencing desired long‐term capital flows and altering the equilibrium real exchange rate. The NATREX approach identifies and models the fundamental determinants of equilibrium real exchange rates, consistent with their recent empirical movements in various countries.
The NATREX model is a dynamic stock‐flow growth model. The goal of the NATREX approach is primarily empirical – to explain movements of medium‐ to long‐run real exchange rates in terms of the fundamental real variables of thrift and productivity, assuming that real exchange rates do adjust toward their equilibrium level, although with a lag. A family of consistent general equilibrium models – of rational, optimizing behavior, determining medium‐run equilibrium real exchange rates – forms the core of the NATREX approach. These models provide logical economic justifications for the empirical results.
John R. B. Lighton
- Published in print:
- 2008
- Published Online:
- September 2008
- ISBN:
- 9780195310610
- eISBN:
- 9780199871414
- Item type:
- chapter
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/acprof:oso/9780195310610.003.0015
- Subject:
- Biology, Animal Biology, Biotechnology
This chapter discusses the most frequently used flow meters in respirometry. These include the volumetric rotameter, which is affected by ambient temperature and barometric pressure; and the mass ...
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This chapter discusses the most frequently used flow meters in respirometry. These include the volumetric rotameter, which is affected by ambient temperature and barometric pressure; and the mass flow meter, which directly measures the molar quantity of air passing through it, and thus automatically corrects the volume to standard temperature and pressure. The operation and calibration of each type of meter are discussed.Less
This chapter discusses the most frequently used flow meters in respirometry. These include the volumetric rotameter, which is affected by ambient temperature and barometric pressure; and the mass flow meter, which directly measures the molar quantity of air passing through it, and thus automatically corrects the volume to standard temperature and pressure. The operation and calibration of each type of meter are discussed.
John Kay
- Published in print:
- 1996
- Published Online:
- November 2003
- ISBN:
- 9780198292227
- eISBN:
- 9780191596520
- Item type:
- chapter
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/0198292228.003.0008
- Subject:
- Economics and Finance, Microeconomics
This chapter describes financial relationships between competitive advantage, economic rent, added value, and various other measures of firm performance.
This chapter describes financial relationships between competitive advantage, economic rent, added value, and various other measures of firm performance.
John Kay
- Published in print:
- 1996
- Published Online:
- November 2003
- ISBN:
- 9780198292227
- eISBN:
- 9780191596520
- Item type:
- chapter
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/0198292228.003.0009
- Subject:
- Economics and Finance, Microeconomics
Discussing the irrelevance of corporate finance to firm valuation, this chapter provides support for the assertion that the profitability of a business can only be the result of its underlying ...
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Discussing the irrelevance of corporate finance to firm valuation, this chapter provides support for the assertion that the profitability of a business can only be the result of its underlying competitive advantage.Less
Discussing the irrelevance of corporate finance to firm valuation, this chapter provides support for the assertion that the profitability of a business can only be the result of its underlying competitive advantage.
John Knight and Lina Song
- Published in print:
- 1999
- Published Online:
- October 2011
- ISBN:
- 9780198293309
- eISBN:
- 9780191684975
- Item type:
- book
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/acprof:oso/9780198293309.001.0001
- Subject:
- Economics and Finance, South and East Asia, Development, Growth, and Environmental
This book describes and explains the remarkably large rural–urban divide in economic wellbeing that exists in China. How did it come about? How is it maintained, in the face of equilibrating market ...
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This book describes and explains the remarkably large rural–urban divide in economic wellbeing that exists in China. How did it come about? How is it maintained, in the face of equilibrating market forces? What are the implications for future efficiency and equity in the Chinese economy? The book is divided into five parts: Part 1 introduces the context and scope of the study; Parts 2 and 3 measure and explain the rural–urban divide in income, education, health, and housing, both historically and by means of a household survey; Part 4 analyses the intersectoral movement of factors, both capital flows and the migration of labour; Part 5 ties together the arguments of the work and sets the Chinese experience in the broader context of transition and development economics. The book uses the rigorous analysis and empirical methodology of modern economics.Less
This book describes and explains the remarkably large rural–urban divide in economic wellbeing that exists in China. How did it come about? How is it maintained, in the face of equilibrating market forces? What are the implications for future efficiency and equity in the Chinese economy? The book is divided into five parts: Part 1 introduces the context and scope of the study; Parts 2 and 3 measure and explain the rural–urban divide in income, education, health, and housing, both historically and by means of a household survey; Part 4 analyses the intersectoral movement of factors, both capital flows and the migration of labour; Part 5 ties together the arguments of the work and sets the Chinese experience in the broader context of transition and development economics. The book uses the rigorous analysis and empirical methodology of modern economics.
Paolo Mauro, Nathan Sussman, and Yishay Yafeh
- Published in print:
- 2006
- Published Online:
- May 2006
- ISBN:
- 9780199272693
- eISBN:
- 9780191603488
- Item type:
- book
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/0199272697.001.0001
- Subject:
- Economics and Finance, Financial Economics
This book provides the first comparative analysis of the determinants of sovereign bond spreads in the first era of financial globalization and bond finance (1870-1913) and today (1994-2002). Drawing ...
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This book provides the first comparative analysis of the determinants of sovereign bond spreads in the first era of financial globalization and bond finance (1870-1913) and today (1994-2002). Drawing on a newly-collected data set on bond yields, macroeconomic variables, and news of various categories for a panel of emerging markets, it is shown that news about wars or episodes of politically-motivated violence are significant and robust determinants of spreads; fiscal variables also play a role. In contrast, news about institutional reforms seldom have a rapid and significant impact. There are also important differences between the two eras: country-specific fundamentals accounted for a greater share of variation in spreads during the pre-WWI period than they do today. Crises shared by more than one country are common now, but were rare in the past. The mechanisms for addressing sovereign defaults in the previous era of globalization are discussed and some lessons for today are drawn.Less
This book provides the first comparative analysis of the determinants of sovereign bond spreads in the first era of financial globalization and bond finance (1870-1913) and today (1994-2002). Drawing on a newly-collected data set on bond yields, macroeconomic variables, and news of various categories for a panel of emerging markets, it is shown that news about wars or episodes of politically-motivated violence are significant and robust determinants of spreads; fiscal variables also play a role. In contrast, news about institutional reforms seldom have a rapid and significant impact. There are also important differences between the two eras: country-specific fundamentals accounted for a greater share of variation in spreads during the pre-WWI period than they do today. Crises shared by more than one country are common now, but were rare in the past. The mechanisms for addressing sovereign defaults in the previous era of globalization are discussed and some lessons for today are drawn.
Raymond Brun
- Published in print:
- 2009
- Published Online:
- May 2009
- ISBN:
- 9780199552689
- eISBN:
- 9780191720277
- Item type:
- book
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/acprof:oso/9780199552689.001.0001
- Subject:
- Physics, Theoretical, Computational, and Statistical Physics
The high enthalpy gas flows, associating high velocities, and high temperatures, are the scene of physical and chemical processes such as molecular vibrational excitation, dissociation, ionization, ...
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The high enthalpy gas flows, associating high velocities, and high temperatures, are the scene of physical and chemical processes such as molecular vibrational excitation, dissociation, ionization, or various reactions. The characteristic times of these processes are of the same order of magnitude as aerodynamic characteristic times so that these reactive media are generally in thermodynamic and chemical non-equilibrium. This book presents a general introductory study of these media. In a first part their fundamental statistical aspects are described, starting from their discrete structure and taking into account the interactions between elementary particles: the transport phenomena, relaxation, and kinetics as well as their coupling are thus analysed and illustrated by many examples. The second part of the work is devoted to the macroscopic aspects of the reactive flows including shock waves, hypersonic expansions, flows around bodies, and boundary layers. Experimental data on vibrational relaxation times, vibrational populations, and kinetic rate constants are also presented. Finally, experimental aspects of reactive flows, their simulation in shock tube and shock tunnel are described as well as their applications, particularly in the aero-spatial domain.Less
The high enthalpy gas flows, associating high velocities, and high temperatures, are the scene of physical and chemical processes such as molecular vibrational excitation, dissociation, ionization, or various reactions. The characteristic times of these processes are of the same order of magnitude as aerodynamic characteristic times so that these reactive media are generally in thermodynamic and chemical non-equilibrium. This book presents a general introductory study of these media. In a first part their fundamental statistical aspects are described, starting from their discrete structure and taking into account the interactions between elementary particles: the transport phenomena, relaxation, and kinetics as well as their coupling are thus analysed and illustrated by many examples. The second part of the work is devoted to the macroscopic aspects of the reactive flows including shock waves, hypersonic expansions, flows around bodies, and boundary layers. Experimental data on vibrational relaxation times, vibrational populations, and kinetic rate constants are also presented. Finally, experimental aspects of reactive flows, their simulation in shock tube and shock tunnel are described as well as their applications, particularly in the aero-spatial domain.
Peter Butler, David Collings, René Peters, and Javier Quintanilla
- Published in print:
- 2006
- Published Online:
- September 2007
- ISBN:
- 9780199274635
- eISBN:
- 9780191706530
- Item type:
- chapter
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/acprof:oso/9780199274635.003.0009
- Subject:
- Business and Management, HRM / IR
This chapter sheds light on the nature of managerial resourcing in US multinationals. Hitherto there has been a strong reliance on the use of internal labour markets (ILMs) as the principal means of ...
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This chapter sheds light on the nature of managerial resourcing in US multinationals. Hitherto there has been a strong reliance on the use of internal labour markets (ILMs) as the principal means of sourcing managerial talent. In several instances, however, enhanced competition has triggered the necessity for the rapid importation of new skill sets eroding the primacy of ILMs. Over and above such supply side change, some organizations were similarly moving away from seniority based promotion towards a more meritocratic model, less sheltered from the vicissitudes of market pressures. Consistent with the theoretical focus of this volume, it is nevertheless demonstrated that headquarters did not have a totally free hand. The partial dismantling of ILMs was subject to local constraints and contestation, giving rise to new and significant tensions. More specifically, the emphasis upon tight performance standards was often met with stiff opposition suggesting local norms remain influential.Less
This chapter sheds light on the nature of managerial resourcing in US multinationals. Hitherto there has been a strong reliance on the use of internal labour markets (ILMs) as the principal means of sourcing managerial talent. In several instances, however, enhanced competition has triggered the necessity for the rapid importation of new skill sets eroding the primacy of ILMs. Over and above such supply side change, some organizations were similarly moving away from seniority based promotion towards a more meritocratic model, less sheltered from the vicissitudes of market pressures. Consistent with the theoretical focus of this volume, it is nevertheless demonstrated that headquarters did not have a totally free hand. The partial dismantling of ILMs was subject to local constraints and contestation, giving rise to new and significant tensions. More specifically, the emphasis upon tight performance standards was often met with stiff opposition suggesting local norms remain influential.
Anthony Garratt, Kevin Lee, M. Hashem Pesaran, and Yongcheol Shin
- Published in print:
- 2006
- Published Online:
- September 2006
- ISBN:
- 9780199296859
- eISBN:
- 9780191603853
- Item type:
- chapter
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/0199296855.003.0004
- Subject:
- Economics and Finance, Econometrics
This chapter describes a specific theoretical framework for the macroeconomic modelling of a small open economy, emphasizing stock-flow equilibria, accounting identities, and arbitrage conditions. It ...
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This chapter describes a specific theoretical framework for the macroeconomic modelling of a small open economy, emphasizing stock-flow equilibria, accounting identities, and arbitrage conditions. It describes how the framework can be embedded within a macroeconometric model, noting the testable restrictions on the long-run relations suggested by the theory.Less
This chapter describes a specific theoretical framework for the macroeconomic modelling of a small open economy, emphasizing stock-flow equilibria, accounting identities, and arbitrage conditions. It describes how the framework can be embedded within a macroeconometric model, noting the testable restrictions on the long-run relations suggested by the theory.
Paolo Mauro, Nathan Sussman, and Yishay Yafeh
- Published in print:
- 2006
- Published Online:
- May 2006
- ISBN:
- 9780199272693
- eISBN:
- 9780191603488
- Item type:
- chapter
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/0199272697.003.0001
- Subject:
- Economics and Finance, Financial Economics
This chapter provides an overview of the book and discusses the objectives and arguments set out in the following chapters. It starts by giving a brief history of international capital flows in the ...
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This chapter provides an overview of the book and discusses the objectives and arguments set out in the following chapters. It starts by giving a brief history of international capital flows in the period of globalization before the First World War. This book attempts, as this chapter explains, to shed light on today's international financial environment by comparing it with that of 1870–1913. The overarching objective of the book is to enrich the current debate on the design and reform of the international financial system and architecture, by drawing on the evidence from an earlier period of globalization. The chapter finishes by outlining the chapters that follow.Less
This chapter provides an overview of the book and discusses the objectives and arguments set out in the following chapters. It starts by giving a brief history of international capital flows in the period of globalization before the First World War. This book attempts, as this chapter explains, to shed light on today's international financial environment by comparing it with that of 1870–1913. The overarching objective of the book is to enrich the current debate on the design and reform of the international financial system and architecture, by drawing on the evidence from an earlier period of globalization. The chapter finishes by outlining the chapters that follow.
Giuliano Matessi, Ricardo J. Matos, and Torben Dabelsteen
- Published in print:
- 2008
- Published Online:
- September 2008
- ISBN:
- 9780199216840
- eISBN:
- 9780191712043
- Item type:
- chapter
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/acprof:oso/9780199216840.003.0003
- Subject:
- Biology, Animal Biology, Evolutionary Biology / Genetics
Communication allows individuals to share information and plays a central role in determining animal social behaviour. Animals live in social networks of multiple individuals connected by links ...
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Communication allows individuals to share information and plays a central role in determining animal social behaviour. Animals live in social networks of multiple individuals connected by links representing different interaction types. Signalling interactions form the base of the communication network (i.e., all conspecifics within signalling range) experienced by an individual and are particularly important for information exchange. Looking at interactions within a network has helped identify and explain the diverse signalling and receiving strategies adopted by animals, and may likewise help explain other social interactions. This chapter presents a network model which integrates the concepts of communication and social network. It illustrates how this model can affect information exchange in animal communities with different social structures and ecologies. Finally, it presents some concrete examples of the questions that arise and can be answered when looking at the behavioural ecology of birds from a network perspective.Less
Communication allows individuals to share information and plays a central role in determining animal social behaviour. Animals live in social networks of multiple individuals connected by links representing different interaction types. Signalling interactions form the base of the communication network (i.e., all conspecifics within signalling range) experienced by an individual and are particularly important for information exchange. Looking at interactions within a network has helped identify and explain the diverse signalling and receiving strategies adopted by animals, and may likewise help explain other social interactions. This chapter presents a network model which integrates the concepts of communication and social network. It illustrates how this model can affect information exchange in animal communities with different social structures and ecologies. Finally, it presents some concrete examples of the questions that arise and can be answered when looking at the behavioural ecology of birds from a network perspective.
Jerome L. Stein
- Published in print:
- 2006
- Published Online:
- May 2006
- ISBN:
- 9780199280575
- eISBN:
- 9780191603501
- Item type:
- chapter
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/0199280576.003.0004
- Subject:
- Economics and Finance, Financial Economics
The NATREX is a model of the equilibrium real exchange rate, which is where the real exchange rate is heading. The NATREX model has two components: the long-run equilibrium real exchange rate and the ...
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The NATREX is a model of the equilibrium real exchange rate, which is where the real exchange rate is heading. The NATREX model has two components: the long-run equilibrium real exchange rate and the dynamics of adjustment of the medium-run equilibrium to the long-run equilibrium. In the medium-run equilibrium, the ratio of the external debt/GDP is predetermined, and the real exchange rate is associated with both internal and external balance. The real exchange rate and debt ratio are endogenous variables. In full stock-flow equilibrium, the long run equilibrium real exchange rate and external debt ratio depend upon the vector of time varying fundamentals, which are productivity and thrift in the country relative to the rest of the world.Less
The NATREX is a model of the equilibrium real exchange rate, which is where the real exchange rate is heading. The NATREX model has two components: the long-run equilibrium real exchange rate and the dynamics of adjustment of the medium-run equilibrium to the long-run equilibrium. In the medium-run equilibrium, the ratio of the external debt/GDP is predetermined, and the real exchange rate is associated with both internal and external balance. The real exchange rate and debt ratio are endogenous variables. In full stock-flow equilibrium, the long run equilibrium real exchange rate and external debt ratio depend upon the vector of time varying fundamentals, which are productivity and thrift in the country relative to the rest of the world.
