dean duffy - Academia.edu (original) (raw)
Papers by dean duffy
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Chapman and Hall/CRC, Dec 12, 2016
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Advanced Engineering Mathematics, 2022
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Advanced Engineering Mathematics with MATLAB®, 2021
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One of the most important functions of a ratings company is to provide the financial services ind... more One of the most important functions of a ratings company is to provide the financial services industry with information they can use to assess the creditworthiness of a firm. This information is derived in part from probability of default (PD) models constructed from historical data specific to a company or class of companies, including debt levels, earnings, market capitalization, etc. The model then provides the likelihood of default over different time horizons for use by potential investors and creditors. Models range from purely statistical regressions over the available data to dynamic models based on geometric brownian motion of the firm’s total value.
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Multiple scattering is the major uncertainty for data analysis of space-based lidar measurements.... more Multiple scattering is the major uncertainty for data analysis of space-based lidar measurements. Until now, accurate quantitative lidar data analysis has been limited to very thin objects that are dominated by single scattering, where photons from the laser beam only scatter a single time with particles in the atmosphere before reaching the receiver, and simple linear relationship between physical property
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WORLD SCIENTIFIC eBooks, Sep 1, 2005
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Advanced Engineering Mathematics, 2022
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Research Review_ 1984, Feb 1, 1986
Civil Service Staff FRAs_ RRAs and University Consultants Atlas, R. Baker, Wayman Augenbaum, Jeff... more Civil Service Staff FRAs_ RRAs and University Consultants Atlas, R. Baker, Wayman Augenbaum, Jeff Duffy, Dean Bloom, Steve Helfand, Mark Ghil, Michael Kalnay, Eugenia Harrison, Ed Livezey, R. Massman, Bill Peslen, Cindy Mintz, Yale Randall, Dave Munteanu, MJ Reuter, Dennis Schubert, Siegfried Richardson, Benita Semazzi, Fredrick Straus, Dave Suarez, Max Sud, Yogesh Susskind, Joel M/A-COM Sigma Data Almeida, Manina Molod, Andrea Ardizzone, Joe Nestler, Mark Balgovlnd, Ramesh Pfaendtner, Jim Battle, Bill Phillips, Bill ...
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From the Publisher: FROM THE PUBLISHER Incorporates the use of MATLAB to help readers visualize a... more From the Publisher: FROM THE PUBLISHER Incorporates the use of MATLAB to help readers visualize and understand the mathematics and solve problems requiring heavy computation Brings relevance to the material through many examples, most drawn from the engineering and scientific literature Introduces the z transform, of great importance in digital technologies Includes a new chapter on the Hilbert transform, crucial to work in communications Incorporates a wealth of examples from the scientific and engineering literature and an abundance of exercises that help build problem-solving skills A solutions manual is available with qualifying course adoptions. Resoundingly popular in its first edition, Dean Duffy's Advanced Engineering Mathematics has been updated, expanded, and now more than ever provides the solid mathematics background required throughout the engineering disciplines. Melding the author's expertise as a practitioner and his years of teaching engineering mathematics, this text stands clearly apart from the many others available. Relevant, insightful examples follow nearly every concept introduced and demonstrate its practical application. This edition includes two new chapters on differential equations, another on Hilbert transforms, and many new examples, problems, and projects that help build problem-solving skills. Most importantly, the book now incorporates the use of MATLAB throughout the presentation to reinforce the concepts presented. MATLAB code is included so readers can take an analytic result, fully explore it graphically, and gain valuable experience with this industry-standard software.
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Journal of the Atmospheric Sciences, 1976
The stability of the classical Norwegian polar front model is reinvestigated, using a numerical t... more The stability of the classical Norwegian polar front model is reinvestigated, using a numerical technique to supplement the precise conclusions which are possible in the limiting case of zero density difference or zero wavenumber. Instead of using the primitive equations, a system of filtered momentum equations which neglects the substantial derivative of the ageostrophic put of the horizontal wind is
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Applied Numerical Mathematics, 1990
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ACM Transactions on Mathematical Software, 1993
Three frequently used methods for numerically inverting Laplace transforms are tested on complica... more Three frequently used methods for numerically inverting Laplace transforms are tested on complicated transforms taken from the literature. The first method is a straightforward application of the trapezoidal rule to Bromwich's integral. The second method, developed by Weeks [22], integrates Bromwich's integral by using Laguerre polynomials. The third method, devised by Talbot [18], deforms Bromwich's contour so that the integrand of Bromwich's integral is small at the beginning and end of the contour. These methods are also applied to joint Laplace-Fourier transform problems. All three methods give satisfactory results; Talbot's, however, has an accurate method for choosing required parameters.
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Studies in Advanced Mathematics, 2001
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Transform Methods for Solving Partial Differential Equations, Second Edition
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Mixed Boundary Value Problems
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Bookmarks Related papers MentionsView impact
Chapman and Hall/CRC, Dec 12, 2016
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
Advanced Engineering Mathematics, 2022
Bookmarks Related papers MentionsView impact
Advanced Engineering Mathematics with MATLAB®, 2021
Bookmarks Related papers MentionsView impact
One of the most important functions of a ratings company is to provide the financial services ind... more One of the most important functions of a ratings company is to provide the financial services industry with information they can use to assess the creditworthiness of a firm. This information is derived in part from probability of default (PD) models constructed from historical data specific to a company or class of companies, including debt levels, earnings, market capitalization, etc. The model then provides the likelihood of default over different time horizons for use by potential investors and creditors. Models range from purely statistical regressions over the available data to dynamic models based on geometric brownian motion of the firm’s total value.
Bookmarks Related papers MentionsView impact
Multiple scattering is the major uncertainty for data analysis of space-based lidar measurements.... more Multiple scattering is the major uncertainty for data analysis of space-based lidar measurements. Until now, accurate quantitative lidar data analysis has been limited to very thin objects that are dominated by single scattering, where photons from the laser beam only scatter a single time with particles in the atmosphere before reaching the receiver, and simple linear relationship between physical property
Bookmarks Related papers MentionsView impact
WORLD SCIENTIFIC eBooks, Sep 1, 2005
Bookmarks Related papers MentionsView impact
Advanced Engineering Mathematics, 2022
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
Research Review_ 1984, Feb 1, 1986
Civil Service Staff FRAs_ RRAs and University Consultants Atlas, R. Baker, Wayman Augenbaum, Jeff... more Civil Service Staff FRAs_ RRAs and University Consultants Atlas, R. Baker, Wayman Augenbaum, Jeff Duffy, Dean Bloom, Steve Helfand, Mark Ghil, Michael Kalnay, Eugenia Harrison, Ed Livezey, R. Massman, Bill Peslen, Cindy Mintz, Yale Randall, Dave Munteanu, MJ Reuter, Dennis Schubert, Siegfried Richardson, Benita Semazzi, Fredrick Straus, Dave Suarez, Max Sud, Yogesh Susskind, Joel M/A-COM Sigma Data Almeida, Manina Molod, Andrea Ardizzone, Joe Nestler, Mark Balgovlnd, Ramesh Pfaendtner, Jim Battle, Bill Phillips, Bill ...
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
From the Publisher: FROM THE PUBLISHER Incorporates the use of MATLAB to help readers visualize a... more From the Publisher: FROM THE PUBLISHER Incorporates the use of MATLAB to help readers visualize and understand the mathematics and solve problems requiring heavy computation Brings relevance to the material through many examples, most drawn from the engineering and scientific literature Introduces the z transform, of great importance in digital technologies Includes a new chapter on the Hilbert transform, crucial to work in communications Incorporates a wealth of examples from the scientific and engineering literature and an abundance of exercises that help build problem-solving skills A solutions manual is available with qualifying course adoptions. Resoundingly popular in its first edition, Dean Duffy's Advanced Engineering Mathematics has been updated, expanded, and now more than ever provides the solid mathematics background required throughout the engineering disciplines. Melding the author's expertise as a practitioner and his years of teaching engineering mathematics, this text stands clearly apart from the many others available. Relevant, insightful examples follow nearly every concept introduced and demonstrate its practical application. This edition includes two new chapters on differential equations, another on Hilbert transforms, and many new examples, problems, and projects that help build problem-solving skills. Most importantly, the book now incorporates the use of MATLAB throughout the presentation to reinforce the concepts presented. MATLAB code is included so readers can take an analytic result, fully explore it graphically, and gain valuable experience with this industry-standard software.
Bookmarks Related papers MentionsView impact
Journal of the Atmospheric Sciences, 1976
The stability of the classical Norwegian polar front model is reinvestigated, using a numerical t... more The stability of the classical Norwegian polar front model is reinvestigated, using a numerical technique to supplement the precise conclusions which are possible in the limiting case of zero density difference or zero wavenumber. Instead of using the primitive equations, a system of filtered momentum equations which neglects the substantial derivative of the ageostrophic put of the horizontal wind is
Bookmarks Related papers MentionsView impact
Applied Numerical Mathematics, 1990
Bookmarks Related papers MentionsView impact
ACM Transactions on Mathematical Software, 1993
Three frequently used methods for numerically inverting Laplace transforms are tested on complica... more Three frequently used methods for numerically inverting Laplace transforms are tested on complicated transforms taken from the literature. The first method is a straightforward application of the trapezoidal rule to Bromwich's integral. The second method, developed by Weeks [22], integrates Bromwich's integral by using Laguerre polynomials. The third method, devised by Talbot [18], deforms Bromwich's contour so that the integrand of Bromwich's integral is small at the beginning and end of the contour. These methods are also applied to joint Laplace-Fourier transform problems. All three methods give satisfactory results; Talbot's, however, has an accurate method for choosing required parameters.
Bookmarks Related papers MentionsView impact
Studies in Advanced Mathematics, 2001
Bookmarks Related papers MentionsView impact
Transform Methods for Solving Partial Differential Equations, Second Edition
Bookmarks Related papers MentionsView impact
Mixed Boundary Value Problems
Bookmarks Related papers MentionsView impact