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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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