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Bradley M. Bell's Home Page

Bradley M. Bell
Numerical Software Engineer
Address Applied Physics Laboratory Institute for Health Metrics and Evaluation
University of Washington University of Washington
1013 NE 40th Street, Seattle   Suite 600, 2301 Fifth Ave., Seattle
PO Box US: 98105-6698, UW: 355640 US: 98121-8210, UW: 358210

Need for Numerical Software Engineers
People who are interested in and understand numerical mathematics, usually prefer to write papers others can read instead of software others can use.

Electronic Identities
2016-12-05 Willowbrook, Sun City, AZ
E-mail   bradbell at
Google   bradley.m.bell
Skype   bradley.m.bell

Technical Biography
Dr. Bell received his BA in math and physics from Saint Lawrence University in 1973, his MA in mathematics from the University of Washington in 1976. and his Ph.D. in mathematics from the University of Washington in 1984. Currently he is employed by the Applied Physics Laboratory of the University of Washington and working on projects for The Institute for Health Metrics and Evaluation (IHME ). As part of this work is developing and supporting the following open source projects: cppad_mixed and dismod_at . He is also developing and supporting the open source C++ and Python Algorithmic Differentiation (AD) projects CppAD and cppad_py . His current research is focused on numerical methods for estimating parameters is statistical models for data. This includes: algorithmic differentiation, Kalman filtering and smoothing, stochastic function estimation (Tikhonov regularization), nonlinear mixed effects estimation, optimization, and monte-carlo simulation.

Non-Technical Biography
Brad was born in New York city on June 10, 1952. His father, George Bell, owned a metal working shop in Brooklyn New York. As a child he would spend the summers at Keewaydin a camp in Salisbury Vermont. Later he spent his summers working for his father. After graduating from Saint Lawrence University, Brad moved to Seattle and attended graduate school in mathematics at the University of Washington. After completing a master's degree, he worked as a software engineer for Flow Research. While working at Flow Research, his son Gabriel Bell was born. After working at Flow Research for a few years, he accepted a software engineer position as a member of the Applied Physics Laboratory. After working at APL for a few years, the Laboratory awarded him a scholarship to attended graduate school and finish his Ph.D. Around this time he took up white water kayaking and enjoyed that sport for many years. Around the turn of millennium, back problems forced him to look for a new sport and he found rock climbing.

Complex Step Method
A short discussion of the first and second order complex step methods in C++ can be the following links: html , xml .

resume Resume
publications Bradley M. Bell's Publications
pub_abstract Abstracts for Published Papers
white_paper Unpublished Paper's
packages Brad's Opens Source Packages
software Software Engineering Procedures
journals Journals Related to Brad's Research
ssh_key Using ssh With Out Passwords
bikelist A Bicycle Trip Packing List
fedora_package Fedora Packaging
rock_climb Rock Climbing Links
mdot_bike_wish Wish List for Bike Routes in Maricopa County, AZ
links Brad's Internet Links

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