User:Tomhubbard
37°35′17″N 77°30′50″W / 37.58806°N 77.51389°W
User:UBX/Commendation Medal
![]() | This user is a Commander in the United States Navy. | ![]() |
UVA | This user attends or attended the University of Virginia |
![]() | This user attends or attended the United States Naval Academy. |
PhD | This user has a Doctor of Philosophy degree. |
![]() | This user lives or hails from Richmond |
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![]() | An ancestor of this user fought for the United States in World War II. |
![]() | This user has been awarded the National Defense Service Medal. |
![]() | Per the userbox migration, {{User Christian}} was moved to {{User:CharonX/Userboxes/User christian}}. |
![]() | This user has been awarded the Southwest Asia Service Medal. |
About Me
I live in Richmond, Virginia in the United States of America and I like nuclear engineering, mathematics, computers, and guns.
64. Brigham Hubbard (1788-1838) | |||||||||||||||||||||||||||
32. Erastus Willard Hubbard (1819-1902) | |||||||||||||||||||||||||||
16. Willard Wright Hubbard (1854-1923) | |||||||||||||||||||||||||||
33. Arabella Wright (1827-1914) | |||||||||||||||||||||||||||
8. Willard Wright Hubbard, Jr. (1886-1969) | |||||||||||||||||||||||||||
17. Josephine Spencer Niles (1858-1952) | |||||||||||||||||||||||||||
4. Willard Wright Hubbard III (1915-1987) | |||||||||||||||||||||||||||
9. Helen Motley (1887-1969) | |||||||||||||||||||||||||||
2. William James Hubbard (1941-2020) | |||||||||||||||||||||||||||
5. Sara Eloise Rast (1917-1993) | |||||||||||||||||||||||||||
1. Thomas Richard Hubbard (1965-) | |||||||||||||||||||||||||||
3. Barbara Jean Ockun (1943-) | |||||||||||||||||||||||||||
Grandma | Willard Wright Hubbard III (1915-1987) | ||||||||||||||||||||||||||||||||
Mom | Dad | Uncle John | |||||||||||||||||||||||||||||||
My brother Bill | Me! | My brother Jim | My brother Greg | ||||||||||||||||||||||||||||||
- http://en.wikipedia.org/key/Omicron_Delta_Kappa
- http://en.wikipedia.org/key/United_States_Naval_Academy
- http://en.wikipedia.org/key/University_of_Virginia
- http://en.wikipedia.org/key/Yodle,_Inc
- http://en.wikipedia.org/key/ReachLocal
I am a former Senior Manager of Software Development at Amazon, where I managed the development of the amazon.com content selection and delivery software (i.e. Amabot). I also invented, designed, and developed the engineering of Amazon.com's behaviorial-targeted third-party display advertising product.
Favorite Math Equation
Where:
Symbol | Meaning | Comments |
---|---|---|
Position vector (i.e. x,y,z) | ||
Energy | ||
Unit vector (solid angle) in direction of motion | ||
Time | ||
Neutron velocity vector | ||
Angular neutron flux Amount of neutron track length in a differential volume about , associated with particles of a differential energy in about , moving in a differential solid angle in about , at time . |
Note integrating over all angles yields scalar neutron flux | |
Scalar neutron flux Amount of neutron track length in a differential volume about , associated with particles of a differential energy in about , at time . |
||
Average number of neutrons produced per fission (e.g., 2.43 for U-235). | ||
Probability density function for neutrons of exit energy from all neutrons produced by fission | ||
Probability density function for neutrons of exit energy from all neutrons produced by delayed neutron precursors | ||
Macroscopic total cross section, which includes all possible interactions | ||
Macroscopic fission cross section, which includes all fission interactions in about | ||
Double differential scattering cross section Characterizes scattering of a neutron from an incident energy in and direction in to a final energy and direction . |
||
Number of delayed neutron precursors | ||
Decay constant for precursor i | ||
Total number of precursor i in at time | ||
Source term |
Travels
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