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• 2003-03-24
• in Young Adult Fiction
• Randy Powell

Dean Duffy

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"Dean, 18, is a baseball player whose glory days are behind him. At 15, he pitched for the world championship Little League team, and as a freshman he hit a game-winning grand slam. But after his arm gave out, he moved to first base and plunged into a two-year batting slump, losing any hope for a college scholarship. Since graduation he's been sliding sideways, wondering what his future holds." --Starred, School Library Journal

• 2022-01-03
• in Mathematics
• Dean G. Duffy

Advanced Engineering Mathematics with MATLAB

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In the four previous editions the author presented a text firmly grounded in the mathematics that engineers and scientists must understand and know how to use. Tapping into decades of teaching at the US Navy Academy and the US Military Academy and serving for twenty-five years at (NASA) Goddard Space Flight, he combines a teaching and practical experience that is rare among authors of advanced engineering mathematics books. This edition offers a smaller, easier to read, and useful version of this classic textbook. While competing textbooks continue to grow, the book presents a slimmer, more concise option. Instructors and students alike are rejecting the encyclopedic tome with its higher and higher price aimed at undergraduates. To assist in the choice of topics included in this new edition, the author reviewed the syllabi of various engineering mathematics courses that are taught at a wide variety of schools. Due to time constraints an instructor can select perhaps three to four topics from the book, the most likely being ordinary differential equations, Laplace transforms, Fourier series and separation of variables to solve the wave, heat, or Laplace's equation. Laplace transforms are occasionally replaced by linear algebra or vector calculus. Sturm-Liouville problem and special functions (Legendre and Bessel functions) are included for completeness. Topics such as z-transforms and complex variables are now offered in a companion book, Advanced Engineering Mathematics: A Second Course by the same author. MATLAB is still employed to reinforce the concepts that are taught. Of course, this Edition continues to offer a wealth of examples and applications from the scientific and engineering literature, a highlight of previous editions. Worked solutions are given in the back of the book.

• 2015-03-10
• in Mathematics
• Dean G. Duffy

Green's Functions with Applications

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Since publication of the first edition over a decade ago, Green’s Functions with Applications has provided applied scientists and engineers with a systematic approach to the various methods available for deriving a Green’s function. This fully revised Second Edition retains the same purpose, but has been meticulously updated to reflect the current state of the art. The book opens with necessary background information: a new chapter on the historical development of the Green’s function, coverage of the Fourier and Laplace transforms, a discussion of the classical special functions of Bessel functions and Legendre polynomials, and a review of the Dirac delta function. The text then presents Green’s functions for each class of differential equation (ordinary differential, wave, heat, and Helmholtz equations) according to the number of spatial dimensions and the geometry of the domain. Detailing step-by-step methods for finding and computing Green’s functions, each chapter contains a special section devoted to topics where Green’s functions particularly are useful. For example, in the case of the wave equation, Green’s functions are beneficial in describing diffraction and waves. To aid readers in developing practical skills for finding Green’s functions, worked examples, problem sets, and illustrations from acoustics, applied mechanics, antennas, and the stability of fluids and plasmas are featured throughout the text. A new chapter on numerical methods closes the book. Included solutions and hundreds of references to the literature on the construction and use of Green's functions make Green’s Functions with Applications, Second Edition a valuable sourcebook for practitioners as well as graduate students in the sciences and engineering.

• 2004-07-15
• in Mathematics
• Dean G. Duffy

Transform Methods for Solving Partial Differential Equations

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Transform methods provide a bridge between the commonly used method of separation of variables and numerical techniques for solving linear partial differential equations. While in some ways similar to separation of variables, transform methods can be effective for a wider class of problems. Even when the inverse of the transform cannot be found ana

• 2008-03-26
• in Mathematics
• Dean G. Duffy

Mixed Boundary Value Problems

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Methods for Solving Mixed Boundary Value Problems An up-to-date treatment of the subject, Mixed Boundary Value Problems focuses on boundary value problems when the boundary condition changes along a particular boundary. The book often employs numerical methods to solve mixed boundary value problems and the associated integral equations. Straightforward Presentation of Mathematical Techniques The author first provides examples of mixed boundary value problems and the mathematical background of integral functions and special functions. He then presents classic mathematical physics problems to explain the origin of mixed boundary value problems and the mathematical techniques that were developed to handle them. The remaining chapters solve various mixed boundary value problems using separation of variables, transform methods, the Wiener–Hopf technique, Green’s function, and conformal mapping. Decipher Mixed Boundary Value Problems That Occur in Diverse Fields Including MATLAB® to help with problem solving, this book provides the mathematical skills needed for the solution of mixed boundary value problems.

• 1995
• in Juvenile Nonfiction
• Randy Powell

Dean Duffy

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Eighteen-year-old Dean, a former high school baseball star whose future has been ruined by a batting slump and a bad arm, is offered a college baseball scholarship and finds himself uncertain of whether to take it.

• 2007-04-10
• in
• Randy Powell

Dean Duffy

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Dean Duffy

• 2021-11-16
• in Religion
• Rachel Campos-Duffy

All American Christmas

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A #1 NEW YORK TIMES BESTSELLER! Pull up a chair, pour some eggnog, and enjoy the Christmas spirit with friends… From the wind-swept, snowy ranges of Wyoming to Florida beaches glowing with Christmas lights, All American Christmas traces holiday traditions across the United States. In this beautiful personal keepsake, Rachel Campos-Duffy and Sean Duffy present a dazzling collection of emotional stories, treasured family photographs, and homegrown Christmas recipes from some of Fox News’ most beloved personalities. Dana Perino takes readers out west to the cattle ranch where she celebrated Christmas with real life “Marlboro Men”—her uncles and grandfather. Maria Bartiromo reflects on growing up in Brooklyn and the famously brilliant light displays in her neighborhood. Brit Hume looks back at the day he and a friend rushed onto the Washington Senators’ field—and how his parents later warned him that he was now on Santa Claus’ naughty list. For Lauren Green, her understanding of Christmas has evolved with her growing faith. Beautifully designed to reflect the color and spirit and sparkle of the season and featuring 16 pages of color photographs, All American Christmas is a gift of love from the Fox News family and is sure to be cherished for seasons to come.

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Dean Duffy

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• 2018-08-06
• in Business & Economics
• Michael Carter

Operations Research

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Operations Research: A Practical Introduction is just that: a hands-on approach to the field of operations research (OR) and a useful guide for using OR techniques in scientific decision making, design, analysis and management. The text accomplishes two goals. First, it provides readers with an introduction to standard mathematical models and algorithms. Second, it is a thorough examination of practical issues relevant to the development and use of computational methods for problem solving. Highlights: All chapters contain up-to-date topics and summaries A succinct presentation to fit a one-term course Each chapter has references, readings, and list of key terms Includes illustrative and current applications New exercises are added throughout the text Software tools have been updated with the newest and most popular software Many students of various disciplines such as mathematics, economics, industrial engineering and computer science often take one course in operations research. This book is written to provide a succinct and efficient introduction to the subject for these students, while offering a sound and fundamental preparation for more advanced courses in linear and nonlinear optimization, and many stochastic models and analyses. It provides relevant analytical tools for this varied audience and will also serve professionals, corporate managers, and technical consultants.