Another permanent-magnet-less motor design is the switched-reluctance motor. Its primary advantage over the induction motor is its dirt-simple rotor construction - it's essentially just a properly shaped chunk of iron, where an induction motor would require a copper squirrel-cage.
Its disadvantage relative to the induction motor is that it requires some cleverness in its controller and/or sensors in order to run at all. I actually wrote some control software for one as a side project - it was a somewhat frustrating experience (though a good portion of the frustration was due to malfunctioning hardware).
Also interesting is their capability to produce their full Torque output at 0 RPM. For applications requiring high torque for "station keeping", this is crucial, and is pretty unique to SRM (Switched Reluctance Machine) motors.
I've been quite interested in repurposing the little Dyson "digital motor", but I suspect that a complete drive system redesign would be necessary to enable full variable RPM control (ie. 0-max, in both directions).
Question for turbofail: did your project happen to use the SRM motor from the Neptune front-load washers, or some other motor?
Very interesting! WP also says, "Stepper motors are similar to switched reluctance motors (which are very large stepping motors with a reduced pole count, and generally are closed-loop commutated.)" I didn't know!
It seems like if this explanation were to make sense, whoever implemented the string-to-number conversion was careful enough to implement saturating addition, but careless enough to not use a numerical type large enough to hold every possible phone number. I don't know if I buy that.
For my computer architecture class at Berkeley, they decided to give Bb a try. It lasted about three weeks before they gave up and reverted to the tried and true command-line scripts for submitting assignments and viewing grades. Hopefully canvas will fare a little better.
The Quora responses reveal an important point regarding Dr. Chua's book: the book was written in response to the failings of the super-strict parenting style.
The WSJ excerpt makes no mention of this, which is a bit misleading.
On another note, my mother attempted to raise me in such a manner, but she was always too busy working to do a complete job of it (she didn't bother with my older brother as much, as he was way more self-motivated than me). I'm actually a bit curious as to how Dr. Chua managed to find time to hound her daughters like this while being a professor.
If what you're comfortable with is lower level stuff, one possibility is to look at an implementation of an object system in C. In particular, I found reading the Python source code to be helpful when learning about object orientation.
That's really cute, but since you've solved the maze, can you tell me what the copyright encumbrance on that code is? Is it open? (By which I mean, is it worth my while to write my own crawler?)
I'm going to wrap it in a Perl module so the whole thing comes right down from CPAN, just like SQLite. This is exactly what I've been waiting for, for years.
In the context of masturbation following intercourse, it probably has a flushing effect (which presumably would reduce the risk of infection reaching the testes and possibly causing infertility--post-coital urination supposedly has similar benefits).
Its disadvantage relative to the induction motor is that it requires some cleverness in its controller and/or sensors in order to run at all. I actually wrote some control software for one as a side project - it was a somewhat frustrating experience (though a good portion of the frustration was due to malfunctioning hardware).
http://en.wikipedia.org/wiki/Switched_reluctance_motor