Archive for February, 2007

Yehuda: Canadian Copyright Code, in Verse

Wednesday, February 21st, 2007

Yehuda: Canadian Copyright Code, in Verse

BC-Alberta Trade Agreement Scuppers CO2 Reduction in BC

Wednesday, February 21st, 2007

This Tyee Article about TILMA shows how its restrictions on differential regulation make it virtually impossible for one province to implement stricter standards (in any area).

bavatuesdays

Wednesday, February 14th, 2007

bavatuesdays

something to read about wordpress multi-user

AlterNet: EnviroHealth: Renewables Can Turn the Tide on Global Warming

Monday, February 12th, 2007

AlterNet: EnviroHealth: Renewables Can Turn the Tide on Global Warming

Hours of Daylight

Monday, February 12th, 2007

Thanks to Zac at squareCircleZ for pointing out the dawn and dusk graphs at Gaisma as real-life examples of approximate sine graphs.

In fact the true time of noon appears to oscillate slightly with a 6 month period so that the Tokyo graphs are modelled pretty well by 6+1.5sin(2pix/12)-0.15sin(2pix/6) & -6-1.5sin(2pix/12)-0.15sin(2pix/6).

(Update: thanks to zac also for pointing out in the comment below that I should either have used cosines or have said “where x is the number of months since the spring equinox”)

It will be neat to be able to give Gaisma as a source of reference data for the hours of daylight modelling examples in my precalculus classes.

Who Was Milton Friedman?

Saturday, February 3rd, 2007

The New York Review of Books: Who Was Milton Friedman? by Paul Krugman

Why I Have Not Read ‘Heat’

Friday, February 2nd, 2007

According to his publisher’s web blurb, George Monbiot has established that “we need a 90% cut in our emissions within 25 years if we are to stop ourselves reaching the point where the “climate feedback” becomes unstoppable”, and “for the first time, … explains how this cut could be achieved. ”

My problem is more with the latter than the former (although I am doubtful that the 90% cut can reliably to be shown to be either necessary or sufficient), and arises largely because the blurb reads to me like one for a secret ‘get rich quick’ scheme whose author will tell me how to make millions doing absolutely nothing in five easy steps (which just happen to be available only in book form).

If Monbiot can’t tell me in one page what the essence of his strategy is then he probably can’t do it in a book either. But just in case I’m missing out on hearing about the magic bullet that noone else has thought of I’ll be going to today’s seminar. And I urge anyone else at Langara who cares about the very real threat of global warming to do likewise.

Lights Out!

Thursday, February 1st, 2007

Unfortunately I don’t think this initiative has had enough publicity in this part of the world for there to be a noticeable dip as seen by BC Hydro but there’s nothing wrong with joining in to the extent that we are able.

It’s a shame that we are not using air conditioning at this time of year, but perhaps there are some other College-wide systems (other than computers) which could be temporarily shut down. And perhaps with regard to computers we could ask ICS to use those 5 min to test our emergency power supply system.

Of course if we wanted to send the strongest possible correct “signal” then we could start up the air conditioning and every available electric heater etc (arc welders would be good if we have them) earlier that morning then turn them all off at 10:55 and on again at 11:00 for another half hour or so (and off again at random times after that). But I suppose that might be seen as a cynical and dishonest manipulation of the data.

Egalitarian Nature of Blogging

Thursday, February 1st, 2007

Wesley Fryer on The Egalitarian Nature of Blogging