Time-Varying Thresholds

Time-Varying Thresholds

Author: Serineh Najarian

Publisher: International Monetary Fund

Published: 2003-09-01

Total Pages: 33

ISBN-13: 145185921X

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This paper introduces a time-varying threshold autoregressive model (TVTAR), which is used to examine the persistence of deviations from PPP. We find support for the stationary TVTAR against the unit root hypothesis; however, for some developing countries, we do not reject the TVTAR with a unit root in the corridor regime. We calculate magnitudes, frequencies, and durations of the deviations of exchange rates from forecasted changes in exchange rates. A key result is asymmetric adjustment. In developing countries, the average cumulative deviation from forecasts during periods when exchange rates are below forecasts is twice the corresponding measure during periods when exchange rates are above forecasts.


Book Synopsis Time-Varying Thresholds by : Serineh Najarian

Download or read book Time-Varying Thresholds written by Serineh Najarian and published by International Monetary Fund. This book was released on 2003-09-01 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper introduces a time-varying threshold autoregressive model (TVTAR), which is used to examine the persistence of deviations from PPP. We find support for the stationary TVTAR against the unit root hypothesis; however, for some developing countries, we do not reject the TVTAR with a unit root in the corridor regime. We calculate magnitudes, frequencies, and durations of the deviations of exchange rates from forecasted changes in exchange rates. A key result is asymmetric adjustment. In developing countries, the average cumulative deviation from forecasts during periods when exchange rates are below forecasts is twice the corresponding measure during periods when exchange rates are above forecasts.


Effects of Time-Varying Magnetic Fields in the Frequency Range 1 KHz to 100 KHz Upon the Human Body

Effects of Time-Varying Magnetic Fields in the Frequency Range 1 KHz to 100 KHz Upon the Human Body

Author: Julia Bohnert

Publisher: KIT Scientific Publishing

Published: 2014-05-12

Total Pages: 203

ISBN-13: 3866447825

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In this work, the physiological effects of time-varying magnetic fields up to 100 kHz have been investigated, namely magnetic stimulation and body warming. Simulation studies were based on numerical calculations on sophisticated cell and body models. In addition, magnetic stimulation thresholds have been determined experimentally.The project was carried out within the scope of the development of Magnetic Particle Imaging, a new imaging technology for medical diagnostics.


Book Synopsis Effects of Time-Varying Magnetic Fields in the Frequency Range 1 KHz to 100 KHz Upon the Human Body by : Julia Bohnert

Download or read book Effects of Time-Varying Magnetic Fields in the Frequency Range 1 KHz to 100 KHz Upon the Human Body written by Julia Bohnert and published by KIT Scientific Publishing. This book was released on 2014-05-12 with total page 203 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this work, the physiological effects of time-varying magnetic fields up to 100 kHz have been investigated, namely magnetic stimulation and body warming. Simulation studies were based on numerical calculations on sophisticated cell and body models. In addition, magnetic stimulation thresholds have been determined experimentally.The project was carried out within the scope of the development of Magnetic Particle Imaging, a new imaging technology for medical diagnostics.


Threshold Models in Non-linear Time Series Analysis

Threshold Models in Non-linear Time Series Analysis

Author: H. Tong

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 333

ISBN-13: 1468478885

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In the last two years or so, I was most fortunate in being given opportunities of lecturing on a new methodology to a variety of audiences in Britain, China, Finland, France and Spain. Despite my almost Confucian attitude of preferring talking (i.e. a transient record) to writing (i.e. a permanent record), the warm encouragement of friends has led to the ensuing notes. I am also only too conscious of the infancy of the methodology introduced in these notes. However, it is my sincere hope that exposure to a wider audience will accelerate its maturity. Readers are assumed to be familiar with the basic theory of time series analysis. The book by Professor M.B. Priestley (1981) may be used as a general reference. Chapter One is addressed to the general question: "why do we need non-linear time series models?" After describing some significant advantages of linear models, it singles out several major limitations of linearity. Of course, the selection reflects my personal view on the subject, which is only at its very beginning, although there does seem to be a general agreement in the literature that time irr'eversibility and limit cycles are among the most obvious.


Book Synopsis Threshold Models in Non-linear Time Series Analysis by : H. Tong

Download or read book Threshold Models in Non-linear Time Series Analysis written by H. Tong and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 333 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last two years or so, I was most fortunate in being given opportunities of lecturing on a new methodology to a variety of audiences in Britain, China, Finland, France and Spain. Despite my almost Confucian attitude of preferring talking (i.e. a transient record) to writing (i.e. a permanent record), the warm encouragement of friends has led to the ensuing notes. I am also only too conscious of the infancy of the methodology introduced in these notes. However, it is my sincere hope that exposure to a wider audience will accelerate its maturity. Readers are assumed to be familiar with the basic theory of time series analysis. The book by Professor M.B. Priestley (1981) may be used as a general reference. Chapter One is addressed to the general question: "why do we need non-linear time series models?" After describing some significant advantages of linear models, it singles out several major limitations of linearity. Of course, the selection reflects my personal view on the subject, which is only at its very beginning, although there does seem to be a general agreement in the literature that time irr'eversibility and limit cycles are among the most obvious.


A Study of Time-varying Threshold Learning

A Study of Time-varying Threshold Learning

Author: Jack Sklansky

Publisher:

Published: 1968

Total Pages: 118

ISBN-13:

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Book Synopsis A Study of Time-varying Threshold Learning by : Jack Sklansky

Download or read book A Study of Time-varying Threshold Learning written by Jack Sklansky and published by . This book was released on 1968 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:


The Dynamics of Time-varying Threshold Learning

The Dynamics of Time-varying Threshold Learning

Author: Jack Sklansky

Publisher:

Published: 1969

Total Pages: 64

ISBN-13:

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Book Synopsis The Dynamics of Time-varying Threshold Learning by : Jack Sklansky

Download or read book The Dynamics of Time-varying Threshold Learning written by Jack Sklansky and published by . This book was released on 1969 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:


Determining Thresholds of Complete Synchronization, and Application

Determining Thresholds of Complete Synchronization, and Application

Author: Andrzej Stefa?ski

Publisher: World Scientific

Published: 2009

Total Pages: 225

ISBN-13: 9812837663

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This book is devoted to the phenomenon of synchronization and its application for determining the values of Lyapunov exponents. In recent years, the idea of synchronization has become an object of great interest in many areas of science, e.g., biology and communication or laser physics. Over the last decade, a number of new types of synchronization have been identified and some interesting new ideas concerning the synchronization have also appeared.This book presents the complete synchronization problem rather than just results from the research. The problem is demonstrated in relation to a kind of coupling applied between dynamical systems, whereby a unique classification of possible couplings is introduced. Another novel feature is the connection presented between synchronization and the problem of determining the Lyapunov exponents, especially for non-differentiable systems. A detailed proposal of such an estimation method and examples of its application are included.


Book Synopsis Determining Thresholds of Complete Synchronization, and Application by : Andrzej Stefa?ski

Download or read book Determining Thresholds of Complete Synchronization, and Application written by Andrzej Stefa?ski and published by World Scientific. This book was released on 2009 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is devoted to the phenomenon of synchronization and its application for determining the values of Lyapunov exponents. In recent years, the idea of synchronization has become an object of great interest in many areas of science, e.g., biology and communication or laser physics. Over the last decade, a number of new types of synchronization have been identified and some interesting new ideas concerning the synchronization have also appeared.This book presents the complete synchronization problem rather than just results from the research. The problem is demonstrated in relation to a kind of coupling applied between dynamical systems, whereby a unique classification of possible couplings is introduced. Another novel feature is the connection presented between synchronization and the problem of determining the Lyapunov exponents, especially for non-differentiable systems. A detailed proposal of such an estimation method and examples of its application are included.


Dynamic Behavior of Time-varying Threshold Learning Processes

Dynamic Behavior of Time-varying Threshold Learning Processes

Author: Dexter Vanc Smith

Publisher:

Published: 1968

Total Pages: 268

ISBN-13:

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Book Synopsis Dynamic Behavior of Time-varying Threshold Learning Processes by : Dexter Vanc Smith

Download or read book Dynamic Behavior of Time-varying Threshold Learning Processes written by Dexter Vanc Smith and published by . This book was released on 1968 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:


Time-varying Thresholds

Time-varying Thresholds

Author: Hyginus Lambert Leon

Publisher:

Published: 2003

Total Pages: 36

ISBN-13:

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Book Synopsis Time-varying Thresholds by : Hyginus Lambert Leon

Download or read book Time-varying Thresholds written by Hyginus Lambert Leon and published by . This book was released on 2003 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:


Standards and Thresholds for Impact Assessment

Standards and Thresholds for Impact Assessment

Author: Michael Schmidt

Publisher: Springer Science & Business Media

Published: 2008-03-04

Total Pages: 509

ISBN-13: 3540311416

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Standards and Thresholds play an important role in many stages of the Environmental Impact Assessment (EIA) process. They can be legally binding or guidance values and are linked to environmental data. This book provides a comprehensive collection of standards and thresholds, with their derivation and application in case studies of EIA projects. The text introduces key drivers of standards, their effect on environment and health, emerging issues and more.


Book Synopsis Standards and Thresholds for Impact Assessment by : Michael Schmidt

Download or read book Standards and Thresholds for Impact Assessment written by Michael Schmidt and published by Springer Science & Business Media. This book was released on 2008-03-04 with total page 509 pages. Available in PDF, EPUB and Kindle. Book excerpt: Standards and Thresholds play an important role in many stages of the Environmental Impact Assessment (EIA) process. They can be legally binding or guidance values and are linked to environmental data. This book provides a comprehensive collection of standards and thresholds, with their derivation and application in case studies of EIA projects. The text introduces key drivers of standards, their effect on environment and health, emerging issues and more.


Neuronal Dynamics

Neuronal Dynamics

Author: Wulfram Gerstner

Publisher: Cambridge University Press

Published: 2014-07-24

Total Pages: 591

ISBN-13: 1107060834

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This solid introduction uses the principles of physics and the tools of mathematics to approach fundamental questions of neuroscience.


Book Synopsis Neuronal Dynamics by : Wulfram Gerstner

Download or read book Neuronal Dynamics written by Wulfram Gerstner and published by Cambridge University Press. This book was released on 2014-07-24 with total page 591 pages. Available in PDF, EPUB and Kindle. Book excerpt: This solid introduction uses the principles of physics and the tools of mathematics to approach fundamental questions of neuroscience.