alephnil

10 ms·

61.
by alephnil 8y ago
One problem with solar in Europe, especially in Northen and Eastern Europe, where heating in the winter dominate consumption, is that almost all solar potential is in the summer, when less electricity is needed. This is basically a result o
62.
by alephnil 8y ago
While the NSA never have given reasons for their recommendations, they did at least to some extent contribute to securing standards in the past. One example was DES, that NSA changed the key schedule, at the same time reducing it from 128-b
63.
by alephnil 8y ago
I don't know if you are serious, but regardless of that, the James Webb space telescope will stay near the L2 Lagrange point. This is not a stable orbit, and left to its own, the spacecraft will drift away from the desired orbit. That
64.
by alephnil 9y ago
In all of EU, it is legally required to repair stuff that does not last for reasonably long time, but it is not up to each induvidual to define how long they think a product should last. That is defined per category of product. Most electro
65.
by alephnil 9y ago
A not so inspiring talk about a very inspiring topic. A much better talk about the Apollo guidance computer was held at Code Mesh London 2015: https://www.youtube.com/watch?v=xY45YE7ggng
66.
by alephnil 9y ago
Browsers has supported it since the late nineties. The problem are on the practical side. If you ever log in from more than one machine, all must have your private key, and the mechanism for synchronising keys between machines are not there
67.
by alephnil 9y ago
The Navier-Stokes equations assume that the medium is continuous even at infinitely small scales, which obviously not the case for natural fluids, that are made of discrete atoms. Thus the equations are only correct at sufficiently large sc
68.
by alephnil 9y ago
They mostly escape from that by using huge amount of data and massive computing resources. Deep learning was became feasible because of the huge amount of data companies like Facebook, Google, Apple and others has collected.
69.
by alephnil 9y ago
If someone to dislike a programming language, they have usually been exposed to a codebase written it. Very few dislike something they have never encountered. That means that the language must have been popular at least at some point if a l
70.
by alephnil 9y ago
Actually, the word it is derived from still exist in Norwegian (ludder), though it feel a bit archaic in modern Norwegian, and is much less used than "slut" is in English.
71.
by alephnil 9y ago
Python is what BASIC was in the 1970s and 80s, in a good way. It enables people that normally would not program to do things that they otherwise could not be done with traditional software with a GUI, that being web based, apps or desktop a
72.
by alephnil 9y ago
It is not only the US that is like that. Also in Norway it is considered a secret, and you can get a worrying amount of information about someone just by having their social security number. My guess that this is misguided and muddled secur
73.
by alephnil 9y ago
The earth's crust is 13% aluminium by weight, so there is no chance there ever will be a shortage. The thing with aluminium is rather the amount of energy needed to produce it compared to the energy needed to recycle it, which is about
74.
by alephnil 9y ago
All newer versions of Fortran will segfault, but back in the days they would not. Back in the ninties I fixed a bug we found when porting a Fortran 77 program from HPUX to Linux. The program would segfault on Linux, but worked on HPUX. The
75.
by alephnil 9y ago
In my experience, the two things that to the largest degree has improved software development productivity the last 20 years is revision control and continuous integration. Back in the nineties, the many did not use version control at all,
76.
by alephnil 9y ago
I have never heard it in English either, and don't think it is a common term at all, but in Norwegian it is very common usage, where hvitevarer (white goods) is fridges, washing machines, dishwashers etc, and brunevarer (brown goods) a
77.
by alephnil 9y ago
Absolutely. The amount of tricks used to achieve that is amazing, including things register renaming, branch prediction, virtual registers, instruction reordering etc. That is not really what demonstrated here though, as gcc was run with op
78.
by alephnil 9y ago
The most vulnerable part of symmetric crypto algorithms is the S-box tables, (8 to 8 bits in AES) in most AES implementation realized as 8 to 32 bit T-tables. It is possible, but harder and slower to implement AES without, so it is usually
79.
by alephnil 9y ago
When I did my Phd in bioinformatics about 10 years ago, most of the molecular biologists and biochemists I talked with expected that something similar to what these researchers found was what happened, but the details was of cause not known
80.
by alephnil 9y ago
Actually one of the reasons that Fortran is fast is not that the code you write in it is inherently faster than C. It is more that the idiomatic way of programming it is fast. This is not necessarily the case in C, where it is quite natural
81.
by alephnil 9y ago
Natural occurring strontium is harmless and not radioactive. It fine to have it in toothpaste. The reason you often hear about is strontium as something radioactive is because of Strontium-90, which is one of the longer lived products of nu
82.
by alephnil 9y ago
Veblen uses the word "Barbarian" in a way I have not seen before. For example he mentions European and Japanese Feudal societies as "higher Barbarian cultures", and others as "Lower Barbarian". The common use o
83.
by alephnil 9y ago
You can even pyrolyse methane, and the result us pure hydrogen and pure carbon. This is a side reaction to the most commonly process used to produce acetylene from methane, and this can be tuned to produce mostly carbon and hydrogen. The di
84.
by alephnil 10y ago
Not only dirty bombs, but actual nuclear weapons. With the more than 90% highly enriched uranium found in submarines, you can make a Hiroshima-type gun assembly device without much technical sophistication.
85.
by alephnil 10y ago
Antivirus software is likely a net negative for computer security in general. On the other hand they are without doubt used a lot, which makes them attractive targets. My point was more the length of the list of commonly used software than
86.
by alephnil 10y ago
If you follow the links to from the release notes to the relevant wikileaks pages, you will find a list that also include chrome, firefox, vlc, opera, libreoffice as well as Kasparsky and McAfee antivirus and many other commonly used softwa
87.
by alephnil 10y ago
You can't turn off the body, and you need exercise to stay healthy. Thus it does not really make sense to compare cycling to driving like the article does. If you are driving to the gym, and then using the energy you would have used bi
88.
by alephnil 10y ago
That has been possible for years, and is even a typical student assignment in speech processing courses. A quick search gave this example course at Cornell http://people.ece.cornell.edu/land/courses/ece5760/Fi
89.
by alephnil 10y ago
SSL 3.0 uses it, and that was released in 1996, and sha-1 was released in 1995 as an improvment over md5 and sha-0. This means it is 22 years old.
90.
by alephnil 10y ago
The main reason for the many electric cars are the tax incentives. It would certainly been a lot fewer Teslas and more Nissan Leafs or similar cars if it had not been for the oil. The tax incentive came when the Think City line of cars was

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