Category Archives: General Interest

Roman Fort at Clunderwen?

About ten years ago, a roman road was discovered tracing a path west of Carmarthen. Currently the road is known to reach as far as Wiston where a roman fort was recently found in 2013. This was the first roman … Continue reading

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To Git or not to Git, that is the question

I’ve sort of reluctantly been pulled into the 21st century of Version Control to use GitHub. Originally an SVN user and many years before that CVS, I have found the Git world is so different that I still don’t trust myself … Continue reading

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PGF 3.0.0 is now Available

To those of use who use PGF and related packages, version 3.0.0 has just been released on CTAN. I include below a summary of the changes I retrieved from the sourceforge site. The manual for PGF 3.0.0 can be obtained … Continue reading

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Parallella Board Arrives

I’ve funded a number of kickstarter projects, two of which have come through. The latest kickstarter project to deliver is the Parallella project. This project is an attempt to bring low power and economical multi-core processing to the masses. The company … Continue reading

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Converting Excel Tables to LaTeX Tables

Today I had the problem of converting an Excel table of values into a LaTeX table. I could have done it by hand but the table had over 400 entries so that would have been a bit tedious. Instead I … Continue reading

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Keywords and Non-Alphabetic Characters

I was bored for a few minutes this evening so I counted up the number of keywords and non-alphabetic characters in some popular computer languages. Here are the results. I obtained the numbers by going to the language reference manuals … Continue reading

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ORCID – Finally I am Unique

It’s taken some time but it looks like there is now a viable unique identification system for researchers. No longer will John Smith’s h-index apparently be 459. ORCID which stands for Open Researcher and Contributor ID, is a non-proprietary code to uniquely … Continue reading

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According to Science Mag, Amps are Volts!

I saw a recent article in Science mag about using electric shocks to boost mental abilities. Interesting article in itself but what really caught my attention was this sentence: “The electrical current slowly ramped up to about 1 milliamp—a tiny … Continue reading

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Drawing Pathways with Tikz

I had the need to draw a negative feedback around a linear pathway. Normally I would use a vector drawing packages to do this, such as Illustrator or Inkscape. This time I thought I would try the tikz package that … Continue reading

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-1 times -1 = +1 ?

My brother asked me the other day why -1 times -1 was +1. It’s the sort of rule we learn at high school and perhaps never think about again. I thought I’d add a note to prove and show why … Continue reading

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