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Political Methodology: An Overview

John E. Jackson

in A New Handbook of Political Science

Published in print:
1998
Published Online:
November 2003
ISBN:
9780198294719
eISBN:
9780191599361
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/0198294719.003.0032
Subject:
Political Science, Reference

Reviews methodological techniques available across the discipline of political science. Econometrics and political science methods include structural equation estimations, time‐series analysis, and ... More


The von Neumann Model as a Chaotic Attractor

Richard M. Goodwin

in Chaotic Economic Dynamics

Published in print:
1990
Published Online:
November 2003
ISBN:
9780198283355
eISBN:
9780191596315
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/0198283350.003.0003
Subject:
Economics and Finance, Macro- and Monetary Economics

Teases out parallels in the thinking of von Neumann and Marx. Goodwin presents a simplified version of the von Neumann model removing the assumption of infinite labour supply. The resulting ... More


Classical Dynamics: The Corn Economy

Richard M. Goodwin

in Chaotic Economic Dynamics

Published in print:
1990
Published Online:
November 2003
ISBN:
9780198283355
eISBN:
9780191596315
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/0198283350.003.0002
Subject:
Economics and Finance, Macro- and Monetary Economics

Deals with the classical dynamical problem of technological advances in an agricultural (corn) economy. Goodwin asserts that two mis‐specifications—concerning labour supply and technical ... More


Phase Transitions Near Two Dimensions

JEAN ZINN-JUSTIN

in Quantum Field Theory and Critical Phenomena

Published in print:
2002
Published Online:
January 2010
ISBN:
9780198509233
eISBN:
9780191708732
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198509233.003.0031
Subject:
Physics, Theoretical, Computational, and Statistical Physics

This chapter discusses the generic O(N) non-linear σ-model. One property which plays an essential role is the UV asymptotic freedom of the σ-model in two dimensions. Some of its properties are ... More


The non-linear s-model

Jean Zinn-Justin

in Phase Transitions and Renormalization Group

Published in print:
2007
Published Online:
January 2010
ISBN:
9780199227198
eISBN:
9780191711107
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199227198.003.0015
Subject:
Physics, Theoretical, Computational, and Statistical Physics

This chapter discusses the non-linear s-model, a field theory characterized by an orthogonal O(N) symmetry acting non-linearly on the fields. The study has several motivations. From the viewpoint of ... More


Bayesian Inference in Dynamic Econometric Models

Luc Bauwens, Michel Lubrano, and Jean-François Richard

Published in print:
2000
Published Online:
September 2011
ISBN:
9780198773122
eISBN:
9780191695315
Item type:
book
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198773122.001.0001
Subject:
Economics and Finance, Econometrics

This book contains an up-to-date coverage of the last twenty years of advances in Bayesian inference in econometrics, with an emphasis on dynamic models. It shows how to treat Bayesian inference in ... More


From Individual Behavior to Aggregate Fertility Dynamics

Hans‐Peter Kohler

in Fertility and Social Interaction: An Economic Perspective

Published in print:
2001
Published Online:
November 2003
ISBN:
9780199244591
eISBN:
9780191596544
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/0199244596.003.0004
Subject:
Economics and Finance, Development, Growth, and Environmental

Shifts the emphasis from individual behaviour in the presence of social interactions to aggregate fertility dynamics. In particular, the chapter considers the implications of using non‐linear models ... More


O(N) vector model in the ordered phase: Goldstone modes

Jean Zinn-Justin

in From Random Walks to Random Matrices

Published in print:
2019
Published Online:
August 2019
ISBN:
9780198787754
eISBN:
9780191829840
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198787754.003.0010
Subject:
Physics, Theoretical, Computational, and Statistical Physics

Chapter 10 examines the case of the spontaneous breaking of a continuous symmetry. When there is spontaneous symmetry breaking, the correlation length diverges at all temperatures in the ordered ... More


Statistical modelling: the effect of trace pollutants on plant growth

Peter J. Diggle and Amanda G. Chetwynd

in Statistics and Scientific Method: An Introduction for Students and Researchers

Published in print:
2011
Published Online:
December 2013
ISBN:
9780199543182
eISBN:
9780191774867
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199543182.003.0007
Subject:
Mathematics, Probability / Statistics, Biostatistics

This chapter develops a model for the results of an experiment, in which young safflower plants were grown in water deliberately contaminated with specified concentrations of glyphosate, a widely ... More


Quantum field theory: An effective theory

Jean Zinn-Justin

in From Random Walks to Random Matrices

Published in print:
2019
Published Online:
August 2019
ISBN:
9780198787754
eISBN:
9780191829840
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198787754.003.0008
Subject:
Physics, Theoretical, Computational, and Statistical Physics

Chapter 8 discusses effective field theory. This concept is inspired by the theory of critical phenomena in statistical physics and based on renormalization group ideas. The basic idea behind ... More


Interacting boson systems

Xiao-Gang Wen

in Quantum Field Theory of Many-Body Systems: From the Origin of Sound to an Origin of Light and Electrons

Published in print:
2007
Published Online:
February 2010
ISBN:
9780199227259
eISBN:
9780191713019
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199227259.003.03
Subject:
Physics, Theoretical, Computational, and Statistical Physics

This chapter introduces a quantum field theory for interacting boson systems. It develops a mean-field theory to study the superfluid phase. A path integral formulation is then developed to re-derive ... More


Quantum field theory: Asymptotic safety

Jean Zinn-Justin

in From Random Walks to Random Matrices

Published in print:
2019
Published Online:
August 2019
ISBN:
9780198787754
eISBN:
9780191829840
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198787754.003.0015
Subject:
Physics, Theoretical, Computational, and Statistical Physics

Chapter 15 examines the conditions under which it is possible to define renormalized quantum field theories (QFTs) consistent on all scales (a property not necessary for effective QFTs and not shared ... More


Conclusion

Yuri G. Raydugin

in Modern Risk Quantification in Complex Projects: Non-linear Monte Carlo and System Dynamics Methodologies

Published in print:
2020
Published Online:
October 2020
ISBN:
9780198844334
eISBN:
9780191879883
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198844334.003.0019
Subject:
Mathematics, Analysis, Applied Mathematics

This chapter provides a high-level overview of concepts, models, and results discussed in this book. It is accentuated that risk quantification used in decision-making can be tagged as ‘political ... More


Integrability in 2D fields theory/sigma-models

Sergei L. Lukyanov and Alexander B. Zamolodchikov

in Integrability: From Statistical Systems to Gauge Theory: Lecture Notes of the Les Houches Summer School: Volume 106, June 2016

Published in print:
2019
Published Online:
September 2019
ISBN:
9780198828150
eISBN:
9780191866937
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198828150.003.0006
Subject:
Physics, Theoretical, Computational, and Statistical Physics

This is a two-part course about the integrability of two-dimensional non-linear sigma models (2D NLSM). In the first part general aspects of classical integrability are discussed, based on the O(3) ... More


Fiscal Policy Sustainability in the Euro Periphery: A Nonlinear Analysis

Roberto A. De Santis, Gabriella Legrenzi, and Costas Milas

in Public Sector Economics and the Need for Reforms

Published in print:
2016
Published Online:
January 2017
ISBN:
9780262034449
eISBN:
9780262332361
Item type:
chapter
Publisher:
The MIT Press
DOI:
10.7551/mitpress/9780262034449.003.0008
Subject:
Economics and Finance, Public and Welfare

We introduce a non-linear analysis of the sustainability of the fiscal policy of the euro-periphery countries, conditional on endogenously estimated state-varying thresholds, which vary with fiscal ... More


Panel data with systematic unbalance

Erik Biørn, Erik Biørn, and Erik Biørn

in Econometrics of Panel Data: Methods and Applications

Published in print:
2016
Published Online:
December 2016
ISBN:
9780198753445
eISBN:
9780191815072
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198753445.003.0011
Subject:
Economics and Finance, Econometrics

The chapter relates to, and extends parts of, Chapters 9 and 10. In focus are observation (selection) rules and systematically unbalanced panel data. The unbalance may follow from the sampling ... More


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