Where is balance? -- Re: Academic priorities
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From: Terje Mathisen on 2 May 2005 08:36 Morten Reistad wrote: > Formulas used are from general relativity. They have to account for > the gravity well, the resultant time dilution, doppler effects, and > bending of space. Without these the GPS receiver would have a best > resolution of a few kilometers. Now it can be as good as a few meters. > > They also have to do advanced Maxwell and some resultant signal > analysis to recover the signal. I believe it was Yagi that first > formulated this theory. The GPS signal is well below the ambient noise floor, it is only recoverable at all due to spread spectrum techniques, where a 1023 bit (afair) spreading code is unique to each satellite. Matching the proper spreading code in both time and doppler stretching/contraction is what makes it possible to detect the signal at all. Since the sat orbits aren't totally circular, the GPS receivers also have to (or at least should?) correct for the ~12 hour period by which the onboard clocks speed up and slow down again as the orbit altitude changes. Terje -- - <Terje.Mathisen(a)hda.hydro.com> "almost all programming can be viewed as an exercise in caching"
From: Patrick Scheible on 2 May 2005 10:09 "Del Cecchi" <dcecchi.nospam(a)att.net> writes: > "Bill Leary" <Bill_Leary(a)msn.com> wrote in message > news:58qdnff4doQ4c-nfRVn-gg(a)giganews.com... > > <jmfbahciv(a)aol.com> wrote in message > > news:nuadnbBSmeBeQ-nfRVn-qA(a)rcn.net... > > > >> One of the problems > >> with home-schooling is that these kids are limited to the biases, > >> beliefs, and knowledge of parents and are never exposed to > >> other kinds of thinking, experience and knowhow. > > And one of the problems with "Government Monopoly Schools" is that the kids > are limited to the biases and knowledge of the teachers and curriculum > consultants. :-) Sure, but as the kids go through school they'll encounter many different teachers and their biases will tend to balance out. -- Patrick
From: Kevin G. Rhoads on 2 May 2005 11:05 >1. Reverse reductio ad absurdum. If presented with two reasonable but >incongrous arguments, there MUST be at least one false underlying >assumption. This shows the insanity of nearly all political arguments. Please, to justify the assumption that "logic" and "politics" have aught to do with one another?
From: David Kanter on 2 May 2005 12:38 I definitely could have used something like this in 9th grade. To be honest, I never really did anything like this until my undergraudate thesis, and I didn't do it to my full satisfaction. But at least now I know how to... David
From: Steve Richfie1d on 2 May 2005 12:55
Morten, et al, >>Schools exist for two main reasons; the primary one is to provide an >>"education" (which in reality only needs to be "how to learn stuff" >>training) >>and to teach conformity to societal norms. There are two very different interpretations of this, and THIS is where the schools and our family part company. The two interpretations are: 1. Indoctrinate the kids to think "normally", accept commonly accepted social values, etc., as the schools now attempt to do. 2. Teach the kids to ACT (i.e. fake being) completely normal as needed, but without transforming or restricting their thought processes. I did this by signing the kids up to Toastmasters when they were ready. A local group accepted them despite their young age because they could easily carry on adult-level conversations and generally "fit in" with the group, give speeches, etc. Of course, official membership had to wait until they reached 18. It is sure interesting to hear the kids' impressions of things when they are out of earshot of the other members! BTW, the original justification for schools was to have a sufficiently educated electorate to vote intelligently on the issues. In this they have failed miserably. Steve Richfie1d |