4,578 reputation
11523
bio website vyznev.net
location Helsinki, Finland
age
visits member for 3 years, 2 months
seen 12 hours ago

I'm a PhD student in biomathematics, working on stochastic individual-based models of evolution in spatially structured populations. My other interests include cryptography, programming games and puzzles, photography and graphic design.

I started programming (in AmigaBASIC) when I was 10 years old. Nowadays, I'm most comfortable using Perl, C and JavaScript. I know Java and PHP too, but I can't really say I like them. I also know some Python, but not as much as I'd like.


CC-Zero Please consider any (original) code I post to Stack Overflow and other Stack Exchange sites to be released under CC-Zero unless stated otherwise. You may do whatever you want with it and don't have to credit me in any way, although of course that would be nice.


I'm the main author and maintainer of the Stack Overflow Unofficial Patch (SOUP), a user script for browsers with GreaseMonkey-compatible user script support (Firefox, Chrome, Opera, possibly Safari) that fixes or works around a number of outstanding issues with the Stack Exchange user interface.

I tend to answer a lot more questions than I ask. Some answers I'm rather proud of:


11h
awarded  Explainer
Sep
24
awarded  Autobiographer
Aug
26
answered Why do we fall down when the bicycle slows down?
Aug
1
revised Is it possible to shield a camera so as to record from the inside of a running microwave oven?
this has nothing to do with thermodynamics
Jul
30
comment Why aren't units with powers, like cm³, surrounded by parentheses?
@supercat: The IEC binary prefixes exist precisely for that purpose. If you mean $16 \times 2^{20}$ bytes, write 16 MiB; if you mean $16 \times 10^{6}$ bytes, write 16 MB without the "i".
Jul
29
comment Why aren't units with powers, like cm³, surrounded by parentheses?
@supercat: According to the current ISO/IEC standard, $4\,{\rm kB/s}$ $=$ $4{,}000\,{\rm B/s} $ $\ne$ $4{,}096\,{\rm B/s}$ $=$ $4\,{\rm KiB/s}$.
Jul
23
awarded  Yearling
Jun
24
revised Interpreting Physics Results Regarding Circuitry Analysis (Highschool Level Physics)
OK, let's use vertical fractions for display math (+ misc. corrections)
Jun
24
revised Interpreting Physics Results Regarding Circuitry Analysis (Highschool Level Physics)
OK, let's use vertical fractions for display math (+ missing comma)
Jun
24
reviewed Reject suggested edit on Interpreting Physics Results Regarding Circuitry Analysis (Highschool Level Physics)
Jun
24
answered Interpreting Physics Results Regarding Circuitry Analysis (Highschool Level Physics)
Jun
24
revised Interpreting Physics Results Regarding Circuitry Analysis (Highschool Level Physics)
paste in additional details from dupe at http://physics.stackexchange.com/q/121590 and the edit history of this question
Jun
9
revised Is magnetic force non-conservative?
added 37 characters in body
Jun
9
revised Is magnetic force non-conservative?
add in the conditions referenced in the quoted text, fix reference links
Jun
6
comment Of all the electrical energy used in a home, is there any portion that won't eventually become thermal energy in the home?
@Klik: It goes outside. Usually mostly into the air, although some setups might also transfer heat into the ground.
Jun
2
comment Why don't two musical instruments sometimes generate destructive interference?
@user6972: Wait, what? How do you get "fundamental tone" from "first five harmonics bins"? Looking at the paper (e.g. Figure 2), it seems pretty clear that they're saying that most of the signal power is in the first five harmonic frequencies, i.e. from the fundamental to the fourth overtone; that's not the same as saying that the signal power would be concentrated in the fundamental frequency alone.
May
30
comment Power fit to some experimental data
NLLS is only (strictly) appropriate if your measurements have additive normally distributed errors. If the errors are mostly multiplicative and log-normal, you do want to use LLS in log space; if they're something more complicated, you either need more advanced methods, or you just pretend your errors are nice and normal / log-normal, even if they really aren't, and hope that your data is clean enough to still give you a decent fit. The real problem isn't so much finding the right fitting method, but that the right method depends on the error distribution, and you usually don't know that.
May
23
answered Symmetry arguments in solving problems
May
21
comment In the case of riding a bicycle, why can the system of the bicycle and rider be accelerated if no external net force?
@tpg2114: Trust me, a cyclist on a really smooth sheet of ice does accelerate. On average, downwards. Briefly. BTDT.
May
19
revised Perturbation metric problem
improve TeX formatting, misc. copyedits