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Chavez, Edgar
Independent Consultant
West Chester, Pennsylvania
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Edgar Chavez is an independent consultant specializing in IBM mainframe computing, software quality assurance, and change management. He has more than 30 years of experience in the industry. He has worked on supervisory, project management, and technical assignments dealing with all phases of systems development and maintenance in finance, administration, transportation, information retrieval, and operating systems support.

Among others, Edgar’s assignments have included: change management consultation; customizing, updating, and enhancing a software configuration management system; designing and building online database maintenance and retrieval systems; designing, building, and maintaining order processing and sales reporting systems; designing and building an online system to manage technical documents; designing, building, and enhancing accounting systems; designing and building automated scripts to test order processing systems for Y2K compliance; and providing technical support to DEC-VAX system managers in more than 100 sites worldwide.

Edgar has experience with a variety of hardware platforms, operating systems, and programming languages.

He holds a B.S. degree in Applied Mathematics from North Carolina State University, and is bilingual in English and Spanish. He enjoys reading in a wide variety of topics, listening to classical music, and gardening. He and his wife live in West Chester, Pennsylvania.

Date Reviewed  
- 10 of 120 reviews

   Programming for Computations - Python
Linge S., Langtangen H., Springer, New York, NY, 2020. 232 pp.  Type: Book (978-3-319324-27-2)

True story: many years ago, while studying applied mathematics, a young man took a one credit hour course in programming. This consisted of an introduction to FORTRAN II and a single assignment: write a program to triangularize a matri...

Dec 7 2021  
   The algorithm design manual (3rd ed.)
Skiena S., Springer International Publishing, Cham, Switzerland, 2020. 793 pp.  Type: Book (978-3-030542-55-9)

Algorithms have been around for a long time, for example, the Euclidean algorithm to find the maximum common divisor of two integers is about 2400 years old. Nowadays, though, “algorithm” refers to instructions exec...

May 12 2021  
   Modern Fortran explained: incorporating Fortran 2018
Metcalf M., Reid J., Cohen M., Oxford University Press, New York, NY, 2018. 522 pp.  Type: Book (978-0-198811-88-6)

First introduced in 1957, FORTRAN was designed to be easier than an assembler language for writing algebraic equations on a computer. In this, FORTRAN was spectacularly successful....

Mar 19 2021  
  Finite-state techniques: automata, transducers and bimachines
Mihov S., Schulz K., Cambridge University Press, New York, NY, 2019. 324 pp.  Type: Book (978-1-108485-41-8)

The mathematical theory of automata is one of the great ideas of computer science, easy to state and understand, yet with great explanatory power and potential for problem solving....

Oct 5 2020  
   The Linux command line: a complete introduction (2nd ed.)
Shotts W., No Starch Press, San Francisco, CA, 2019. 504 pp.  Type: Book (978-1-593279-52-3)

This is a wonderful introduction and tutorial meant to make readers comfortable and productive in the command line. It is not about system administration, Bash scripts, or any other tool, although they are all mentioned and covered at ...

Nov 1 2019  
   Foundations of programming languages (2nd ed.)
Lee K., Springer International Publishing, New York, NY, 2017. 370 pp.  Type: Book (978-3-319707-89-1)

Programming is a science-based craft. For a programmer, the better the science, the better the craft. Foundations of programming languages provides a computer science (CS)-based treatment of the foundations of three programming ...

Apr 8 2019  
   Nim in action
Picheta D., Manning Publications Co., Shelter Island, NY, 2017. 320 pp.  Type: Book (978-1-617293-43-6)

Among the newer programming languages, Nim has managed to distinguish itself on its own merits without any corporate support. Andreas Rumpf released the first Nim compiler written in Nim (then known as Nimrod) in 2008. Nim is open sour...

Jul 16 2018  
   Numbers and computers (2nd ed.)
Kneusel R., Springer Publishing Company, Incorporated, New York, NY, 2017. 346 pp.  Type: Book (978-3-319505-07-7)

Numbers, wonderful mathematical idealizations that they are, have fascinated humans for as long as there have been humans. Computers, much more recent creations, are fascinating in their own way. For many, both are useful but intractab...

May 24 2018  
   Interpreting Lisp: programming and data structures (2nd ed.)
Knott G., Apress, New York, NY, 2017. 150 pp.  Type: Book (978-1-484227-06-0)

In writing Interpreting Lisp: programming and data structures, Knott aims to meet several goals in a concise and direct manner: first, to provide a gentle but precise introduction to Lisp; second, to illustrate the flavor of Lis...

Mar 8 2018  
   Computer programming with C++
Pimparkhede K., Cambridge University Press, New York, NY, 2017. 1014 pp.  Type: Book (978-1-316506-80-6)

I cannot recommend this book under any circumstances--not as a textbook for classroom instruction, not as a reference in a university library, and not for self-study. The book has many faults, which I will summarize under thre...

Jan 19 2018  
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