Obama and Daylight Savings Time November 23, 2008
Posted by Lee in Uncategorized.2 comments
It makes little sense to re-blog something from Boing-Boing, but I’m thrilled to see the following post from them.
Turns out, according to two academics on the NYT Op-Ed page, there is little scientific proof that this reduces energy consumption. It also turns out that this practice could be wasteful, a bit annoying, and a lot of people want to get rid of it.
A study in Indiana, a state that recently started DST, showed an overall increase of 1 percent in residential electricity use with occasional increases of 2 to 4 percent in late spring and early fall. So much for conserving energy.
Get rid of Daylight Savings Time !
Rock Band (2 for 1 edition) November 18, 2008
Posted by Lee in Technology.add a comment
Playing Rock band at the White house raises a lot of questions, one of which is : Can a single person play guitar AND sing, and do it successfully ?
It’s possible. My first try was with a song I knew well (“Roxanne” by the Police) and I got through it.
But there’s one little fact that keeps me from thinking I could do this consistently : the tambourine.
See, when you’re not singing, you’re supposed to thump the microphone in time with a given tambourine part. Well, with both hands taken up with guitar playing, there’s no appendage left to do said thumping.
I did my best bobby McFerrin to get through these parts, but I doubt I could do a difficult song. So I’m still on-instrument-at-a-time.
Technology and Time November 17, 2008
Posted by Lee in French, Technology, linkedin.add a comment
On the northern tip of France you can find the celebrated town of Calais, the point where France and England are closest to each other. On the morning of July 25, 1909, the only way a man could go from one to the other was by boat. Gale force winds ripped along the channel (la manche), as they had done for several days.
In December of the previous year, Wilbur Wright had demonstrated the impossible: not only heavier-than-air flight, but a mastery of it. At Auvours in a public demonstration, he had flown for more than two hours, showing turns, banks, figure-eights, the whole conquête-de-l’air bit in his Wright flyer.
And only a few weeks earlier, the French-Englishman Hubert Latham had attempted to fly from the cliffs of Sangatte in his attempt to pilot a French Antionette across the channel. But his engine was not up to the task, and he had to be fished out.
Louis Blériot, a stocky, brush-bearded Frenchman, had quickly set up camp in a small farm near Sanglatte cliffs. Despite a painful injury to his ankle (received during a crash from a recent flight), Blériot arose at 2:00 am on the 25th on the advice of a member of his team. He took off in his Bleriot XI at around 4:00am, disappearing into the Channel fog.
Around thirty minutes and forty kilometers later, Blériot spotted a French flag violently waving in the wind, held by a journalist friend. Although not exactly a miracle of navigation (his route, pictured below, from the French newspaper L’Illusion), Blériot had done what no one else had : flown over a major body of water.
Diagnose my Graphs November 11, 2008
Posted by Lee in linkedin.add a comment
Frequently, statisticians have to act like doctors. We see statistical reports that try to describe something : how fast rumors spread based on how large a company is, or the relationship between nitrogen content and crop yield. Speed and gas usage. Almost anything you can think of.We get measurements on the relationships, then try to see what we can determine about them.
So today, put on your diagnostician’s cap and look at the four relationships I show you here. To keep you from guessing, I’ve hidden the labels for the two variables, so you’ll be looking at Y1 and X1, Y2 and X2, Y3 and X3, and so on. Here’s the DATA step and PROC REG code to generate the output.
DATA Anscombe; INPUT X1 Y1 X2 Y2 X3 Y3 X4 Y4; Lines; 10 8.04 10 9.14 10 7.46 8 6.58 8 6.95 8 8.14 8 6.77 8 5.76 13 7.58 13 8.74 13 12.74 8 7.71 9 8.81 9 8.77 9 7.11 8 8.84 11 8.33 11 9.26 11 7.81 8 8.47 14 9.96 14 8.1 14 8.84 8 7.04 6 7.24 6 6.13 6 6.08 8 5.25 4 4.26 4 3.1 4 5.39 19 12.5 12 10.84 12 9.13 12 8.15 8 5.56 7 4.82 7 7.26 7 6.42 8 7.91 5 5.68 5 4.74 5 5.73 8 6.89 ; RUN; proc reg; model Y1=X1; model Y2=X2; model Y3=X3; model Y4=X4; run; quit;
The PROC REG command fits the least-squares line to each set, giving me the equation of fit and all the statistics you could want. Click on any report or picture to see it in larger size.
Here’s Y1 vs X1:
I highlighted some typical statistics that statisticians might use in discussing how well this line fits. Circles in the picture show the equation of the line (essentially y=3 + ½x), the R2(≅ 0.666), and the F-statistic (≅ 0.022). If you don’t know what these statistics are, bear with me. You’ll still get the joke.
Here’s Y2 by X2. Check the labels if you don’t believe me. :
Here’s Y3 vs X3.
And Y4 by X4.
You should have noticed that all the statistics are identical. The line of best fit is pretty much y = 3 + ½x. And getting all those statistics to be the same, well, that’s something, right ?
Here’s the playing-doctor part. Consider the fact that you’ve got four patients (graphs) exhibiting identical symptoms. What can you tell me about the underlying causes?
Goodbye Anti-intellectualism ! November 9, 2008
Posted by Lee in Education.add a comment
From the Newsweek article :
What Obama’s election means, above all, is that brains are back. Sense and pragmatism and the idea of considering-all-the-options are back. Studying one’s enemies and thinking through strategic problems are back. Cultural understanding is back. Yahooism and jingoism and junk science about global warming and shabby legal reasoning about torture are out. The national culture of flag-pin shallowness that guided our foreign policy is gone with the wind.
(Thanks Kate)
Why you should have a Mac as your daily computer November 5, 2008
Posted by Lee in Uncategorized.1 comment so far
I’m a fanatic when it comes to Macintosh computers. Aside from being cheaper than everything else, they let me do things like this:
The screen shows me running all three released versions of JMP (Windows, Macintosh, and Linux) all at the same time. I know, no one would want to do that but me. But the possibility of three operating systems on one box, that’s something.
In fact, I can make the claim for being able to do this without my cheat of using Remote Desktop Connection (which is free) by using Crossover by Codeweavers. A few days ago, the software was given out for free : thus all of what you see if possible by free software.
The New Intellectual November 2, 2008
Posted by Lee in Uncategorized.3 comments
I’m an intellectual.
I speak three languages, some better than others.
I can recite the preamble to the Constitution and can sing it as well. I know all the words to the national anthem. I can say the pledge of allegiance, leaving out the “under God”.
My favorite novel is Moby-Dick. I know that there is an American Literature that is not British literature minus the accent.
I know the difference between differential and integral calculus. In fact, I left the calculus behind years ago because I mastered it and proceeded open-eyed to many more of the wonders of mathematics.
Starting in 1980 with the Reagan revolution, being an intellectual fell out of favor, and in the meanest way. A solid mastery of the liberal arts education became something to be ashamed of. Don’t get me wrong : if you major in philosophy, you’re going to have a tougher time finding a gainful niche than a computer scientist.
But the greed-is-good Geckolotry of Wall Street became a sadder and sadder reality. Education fell, en grands pas into schooling, where the idea of learning turned into an exercise in resumé building, focused on getting into a so-called good college, finding a place in society where success meant being marketable. Smart people didn’t take history, or poetics, or art, unless servicing some kind of international business or law degree. Winthrop’s shining city on a hill soon became a shining city on a hill of money. Nearly thirty years later, the city is not so much of a hill as it is a pile. And I wouldn’t call it shining, but steaming.
Thirty years where the avant-garde photomontage is only of currency, in a world where currency lost its ability to be figurative. The Chien Andolu busting its balls in the pursuit of selfishness. A selfishness where knowing less was knowing more. Turn off, tune out, drop into ignorance and you’ll get applause.
Not e-on-plural-potatos ignorance. Sunni and shi’ite ignorance. Wall Street ignorance. Affecting an accent ignorance. Palin ignorance.
We’re about to come out of it, my friends. Tuesday will be a reckoning, a thumping, a revelation. Morning time in America.
We will have a President who, unashamedly, started as a professor. A President of Constitutional Law. A President who will sit quietly and pensively in the Oval Office when he needs to.
I may somehow get my dream : where I sit in my office, in my chair, at my desk. My feet are on the desk, my hands folder, my fingers interlocked, my eyes closed. And anyone that bothers me will feel obliged to say “I’m sorry that interrupted you while you were working.”
It is daybreak. It is time to get clean.
Chromatic. Pentatonic. Terpsichorien.
Le déjeuner des Canotiers.
Victory.
Hope.








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