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  • khoitsma
  • General, List, Personal
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Tabular list of all posts

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Short Takes

  • khoitsma
  • General, List, Personal
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Marston mat
MarsdenMattingRepurposed

Short Takes was last updated on August 22, 2024

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PyXLL PySide2 CTP ActiveX Sep 2024

  • khoitsma
  • PySide2, Python, PyXLL, Video
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UPDATE

I built a full PySide2 menu that allows the selection and presentation of AISC steel properties and the calculation of ASCE wind loads.

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Nuclear Threat Aug 2024

  • khoitsma
  • General, History, Science
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What is the perimeter? Jul 2024

  • khoitsma
  • General, Kids (middle school and up), Mathematics
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Solzhenitsyn Jul 2024

  • khoitsma
  • General, History
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Ruth Fertel Jul 2024

  • khoitsma
  • General, History
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First Lady of Steak
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Susan Kare Jun 2024

  • khoitsma
  • General, History
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A short history of “software as a service” June 2024

  • khoitsma
  • General, Software
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Recent Updates Jun 2024

  • khoitsma
  • General
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Debt in the USA May 2024

  • khoitsma
  • General
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In the red in the USA
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Executive Orders May 2024

  • khoitsma
  • General
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A serious article
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My Father May 2024

  • khoitsma
  • History, Personal
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Let’s Cut the Crap Apr 2024

  • khoitsma
  • General
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A serious article
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Fastest Maze-Solving Competition on Earth April 2024

  • khoitsma
  • Engineering, General, Hardware, Kids (middle school and up), Science
  • 0 Comments
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100 Prisoner Problems Mar 2024

  • khoitsma
  • General, Kids (middle school and up), Mathematics, Probability/Statistics
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Alcatraz Federal Penitentiary - Cell 181 - Al Capone.jpg

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GeoGebra app Feb 2024

  • khoitsma
  • General, Kids (middle school and up), Mathematics
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Screenshot

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Reflection on Billiards and Math Feb 2024

  • khoitsma
  • General, Kids (middle school and up), Mathematics
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This inscribed triangle is a periodic billiard trajectory called the Fagnano orbit, named for Giovanni Fagnano, who in 1775 showed that this triangle has the smallest perimeter of all inscribed triangles.

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John Smeaton — "Father of Civil Engineering" Feb 2024

  • khoitsma
  • Engineering, General
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AISC Bolt Shear Capacity — Minimum Dimensions Feb 2024

  • khoitsma
  • AISC, Engineering, Engineering Codes, Pythonista, Steel Detail
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What Happened to the US Machine Tool Industry? Jan 2024

  • khoitsma
  • General, History
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A serious article
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What is the Day of the Week? Jan 2024

  • khoitsma
  • General, Kids (middle school and up), Mathematics, Mental Math
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odd months

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Excel — Dictionary References with PyXLL Jan 2024

  • khoitsma
  • Concept, Excel, Python, PyXLL
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Hand Calculated Truss vs RISA Dec 2023

  • khoitsma
  • Calculus, Computer Algebra, Engineering, Jupyter, Mathematics, Plotly, Python, RISA-3D, Sympy
  • hand calculated, RISA, truss
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truss diagram

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Kolam Muggu Rangoli Dec 2023

  • khoitsma
  • Calculus, General, Mathematics, Science
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Wolfram — Writings Dec 2023

  • khoitsma
  • Calculus, General, Mathematics, Science
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‘The Concept of the Ruliad’
‘Expression Evaluation and Fundamental Physics’

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Feynman — The Relation of Physics to Other Sciences Dec 2023

  • khoitsma
  • Calculus, General, Mathematics, Science
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‘The Relation of Physics to Other Sciences’
‘The Value of Science’
‘Bonus’

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Engineering Math Nov 2023

  • khoitsma
  • Engineering, Kids (middle school and up), Mathematics, Mental Math
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“Often while working, an arithmetical answer is needed — exact is sometimes required, approximate is often acceptable — maybe the basis of a decision or a path forward is based on a few quick calculations, with more rigorous calculations to follow

Multiply by 11 (or 12). Just write down the answer !
Pascal’s Triangle
Aliquot Parts

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The Engineering Hub Nov 2023

  • khoitsma
  • Engineering, General
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AI outperforms conventional weather forecasting Nov 2023

  • khoitsma
  • AI, General, Software
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AI Poetry Nov 2023

  • khoitsma
  • AI, General, Personal, Poetry, Software
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Convolution as seen in Virtual Work Nov 2023

  • khoitsma
  • Calculus, Engineering, Jupyter, Mathematics, Plotly, Python, Sympy
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https://khoitsmahq.firstcloudit.com/images/ScreenshotLinearQ.png

Is this convolution linear or nonlinear?

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