Phil B Brubaker

5 Questions 21 Answers 0 Followers

Questions related from Phil B Brubaker

Numerical problems with a nested solver; Any ideas how to solve this?

I'm having numerical problems with a nested solver. Any ideas how to solve this? JOVE solver is a sequential unconstrained optimization technique applying Newton's second-order gradient...

11 July 2022 9,511 0 View

Where to find OnLine Volunteer jobs, solving Algebraic thru Ordinary Differential Equations, in the Math Modeling, Simulation, & Optimization arenas?

I'm a retired applied mathematician seeking a volunteer job using my (math/EE) education and experience in (disc drive/airplane/space) industries. A calculus-level compiler provides a quick way...

17 February 2020 2,570 3 View

Model: Forest Fires, how to terminate?

My question is regarding a math model of forest fires, not whether fire terminations should be pursued. Given a model, we can determine how best to do the job at hand. Model first! If ever needed,...

09 January 2019 10,025 2 View

Automatic Differentiation, what is it and where is it used?

Automatic Differentiation (AD) is a method for calculating derivatives exactly and automatically. Calculus-level languages [e.g. Slang (NASA’s Apollo…), PROSE (Time Sharing Mainframes), &...

09 January 2019 8,185 0 View

Tweak Parameters in Equations, What Languages are available?

Slang (1960s, NASA), PROSE (1970-1980s, Time Sharing computers, see PROSE-development-history-Wikipedia article), & FortranCalculus (1990-today, PCs w/Windows, see DOI: 10.13140 /...

13 December 2018 3,079 4 View