Category Archives: Software

Software

Per aspera ad astra

My MacBook Air suddenly died after 3 days of inactivity. The reasons was probably an unattended maintenance job that filled up the 80 GB HD. At least the system became unresponsive while transfering some pictures from a camera to a picture harddisk. And after a hard reset, it let not boot me anymore. This is when the nightmare started…

An already ordered 128 GB SSD did not fit the special requirements of the 1st generation MBA (that need an 1.8” ZIF 4 PATA drive with <5mm height). There seems to be only one product on market by Photofast. Unfortunately a 128 GB HD was not available for the next 4 weeks, while the 256 GB comes at an excessive price tag Continue reading Per aspera ad astra →

 

CC-BY-NC Science Surf , accessed 24.08.2026
Joke, Software, Vitamins

Tear Down the Walls

What happens when looking at that video?

The neuroanatomy view this week in Nature

we predict[…] a macroscopic signal visible to functional magnetic resonance imaging (fMRI) in humans. We then looked for this signal as participants explored a virtual reality environment, mimicking the rats’ foraging task: fMRI activation and adaptation showing a speed-modulated six-fold rotational symmetry in running direction. The signal was found in a network of entorhinal/subicular, posterior and medial parietal, lateral temporal and medial prefrontal areas. Continue reading Tear Down the Walls →

 

CC-BY-NC Science Surf , accessed 24.08.2026
Genetics, Software

Human language, DNA language?

A new paper in PLoS ONE argues that human languages may adapt like biological organisms. By doing a large-scale analysis of over 2,000 of the world’s languages the authors find striking relationships between the demographic properties of a languageâ€"such as its population and global spreadâ€"and the grammatical complexity of those languages. Languages with the most speakers (like English) were found to have far simpler grammars than languages spoken by few people and in circumscribed regions. This reminds me to bottlenecks in population history (and founder effects for certain DNA variants) while the authors describe this phenomenon as “Linguistic Niche”. A Hardy Weinberg Equilibrium of declension types?

 

CC-BY-NC Science Surf , accessed 24.08.2026
Genetics, Software

PLINK: Bug or feature?

I am struggling now for 4 weeks with some unusual behaviour in PLINK that gives me different results with a trait of the alternate phenotype files either by calling that trait directly

plink –file mydata –tdt –pheno pheno2.txt –mpheno 1

or from a loop over all traits

plink –file mydata –tdt –pheno pheno2.txt –all-pheno

It seems that I am working with different numbers at both occasions – click to enlarge the log Continue reading PLINK: Bug or feature? →

 

CC-BY-NC Science Surf , accessed 24.08.2026
Software

SQLite and a graphical ER diagrammer for OS X

I am looking for some time for a MS-Acess like graphical interface addressing my large SQLite databases. Having tried out now more than dozen different packages, I found only one that fills my needs and even that only by 80% – RazorSQL.
Writing complex SQL queries is possible hwith an “autocomplete” function Continue reading SQLite and a graphical ER diagrammer for OS X →

 

CC-BY-NC Science Surf , accessed 24.08.2026
Software

The art of a clean Mac OS X desktop

I spent considerable time this week as my MBA showed major quirks – the finder’s trashcan did not respond, clicking on the finder in the dock suddenly opened a second icon, while the finder crashed frequently. Running harddisk maintenance, correcting access rights, deleting several plists, experimenting with safe mode, even deleting PRAM and NVRAM – nothing helped until Continue reading The art of a clean Mac OS X desktop →

 

CC-BY-NC Science Surf , accessed 24.08.2026
Software

Justice for Alan Turing

Petitions #10 has the full details:

2009 has been a year of deep reflection â€" a chance for Britain, as a nation, to commemorate the profound debts we owe to those who came before … we have this year a chance to mark and celebrate another contribution to Britain’s fight against the darkness of dictatorship; that of code-breaker Alan Turing … Continue reading Justice for Alan Turing →

 

CC-BY-NC Science Surf , accessed 24.08.2026