I have released version 0.2 of the Java GNU Scientific Library (JGSL) project, its second public alpha release. Please visit the JGSL project website for more information. This second release provides additional wrapper classes for the GSL stats module (mean, variance, standard deviation, etc.). Feel free to try it out and get back to me […]
Lesson learned today: always monitor a machine you intend to let run without interruptions for a long time. And that includes home automation hardware. I have described elsewhere the steps to install Debian on an embedded PC. I’m still working on this project and intend to soon install the open-source Misterhouse software on it. But […]
Ubiquitous home automation will never become a reality unless cheap embedded PCs are available to be the “brains” of the home. Some time ago I came across a company called Soekris Engineering who make relatively cheap embedded PCs, like the one shown below. This little guy packs a 20Gb CompactFlash harddisk, 128 Mb RAM, and […]
I have released version 0.1.0 of the Java GNU Scientific Library (JGSL) project, its first public release. You can download it from here. This first release provides Java wrapper classes for the Special Functions module of the GNU Scientific Library (log, exp, airy, bessel, etc). I’ve run some preliminary tests on the log function, that […]
I have already mentioned elsewhere that the OSGi technology is likely to play an important part in the computerization of current and future buildings. It is a very attractive programming model for building management systems, especially with respect to its software lifecycle model (stopping, updating and restarting) that does not require a reboot of the […]
Grant that I will never ever have to submit a paper in Word format again… But in case that should happen, here is David’s step-by-step cookbook for converting a ground-breaking paper on building physics from LaTeX to Word format. The idea is to first convert it to HTML, and use Word to convert it—something that […]
The GNU Scientific Library (GSL) is a rich state-of-the-art C library of mathematical routines. Pretty much everything you could think of—special functions, linear algebra, function optimization, fast Fourier transforms, and much, much more—is covered by this library. I have taken over the open-source Java GNU Scientifc Library project at SourceForge. The plan is to write […]
Too much choice can sometimes be just as bad as not enough. Market research has shown that there is an optimal number of jam flavours a supermarket should have on shelf for its customers—less than that, and you feel constrained; but more than that and the variety confuses you.A recent paper in Energy and Buildings […]
If you are regularly programming in your work you should invest some time to keep your programming skills sharp. And one of the best ways to do that is to master a new programming language. I have now been through two major programming projects in Java, and am starting on a new one in Python. […]
I came across an article in the 15th International Symposium on Software Reliability Engineering (2004) titled “A Comparison of Bug Finding Tools for Java“. The authors, Nick Rutar, Christian B. Almazan, and Jeffrey S. Foster, have carried out probably the first detailed comparison of the most popular automatic bug finding tools for Java. They tested […]