My team for Sydney

December 30, 2008 at 7:12 pm | In Cricket | 5 Comments

Katich(c)
Hughes
Ponting
Clarke
Hussey
North(vc)
Haddin(wk)
Johnson
Krejza
Bollinger
Hilfenhaus

You couldn’t really do this to the bowlers – now that you’ve picked Hauritz and Siddle you should stick with them for a while. I also wouldn’t be upset with Rogers instead of Hughes – the selectors just need to pick who they think will be the best opener for Australia in the next 5 years and I think that could be either (or Jacques).

But I am serious about the captaincy changes. The current leadership is bereft of ideas when things don’t go to plan. I don’t really know whether it’s Clarke’s fault but he is part of the Ponting inner sanctum that needs to be shaken up.

And I don’t know what Hayden’s doing in the team at the age of 37 – they say he’s there for England but he’s never been able to handle the swinging ball anyway.

McDonald I have no idea about but hopefully he’ll be useful. I just don’t really like bits and pieces allrounders. I think you need to pick good cricket players – one of North as a batting allrounder or Noffke as a bowling allrounder is surely better.

Farewell to summer certainty

December 30, 2008 at 6:58 pm | In Cricket | 1 Comment

I have no concrete cricket watching memories before the 1994/1995 season (the one day series involving Australia A) – just vague images of Allan Border scratching for runs and Craig McDermott running in hard. I certainly don’t remember the 1992/1993 home loss to the West Indies.

So although it might be a bit melodramatic, I could say that Tuesday December 30, 2008 was the day my childhood finally ended. It was the day I saw the fallibility of the Australian cricket team exposed, not in some far flung land but at the fortress that is the MCG.

Even at the start of the fourth day I believed that Australia would be able to bat for four sessions and save the game. But as is usual batting to save a game is very difficult. And Hayden came out deciding to blast his way out of bad form when a cursory examination of every other time he’s got his form back would show him playing horrible grinding innings in the v.

And from there there was a horrible inevitability about the dismissals – Hussey bad luck, Clarke hasn’t got the belief to drag a game back by himself, Ponting once again showed that despite being an amazing batsman he is incapable of thought.

And then an injured Brett Lee for some reason opened the bowling at the 140km/h pace that with his trajectory just slides onto and then off opposition bats. Siddle tries hard but has got it right once in about 6 opportunities in his test career so far. Johnson is becoming a good bowler but he can’t do it every time. Hauritz is a non-entity in terms of causing a collapse.

So congratulations to the South Africans and farewell to Australian exceptionalism. All this talk of how we play the game in some special Australian way is shown for the rubbish it is – McGrath and Warne allowed us to bat with an attitude that we probably can’t afford any more.

Christmas travel plans (all times local)

December 17, 2008 at 8:30 pm | In Uncategorized | 3 Comments

UA6452: Tucson 13:46 20 Dec – LA 14:26 20 Dec

QF16: LAX 23:50 20 Dec – Brisbane 07:45 22 Dec

22 Dec – trivial pursuit at Greg’s place.

23/24 Dec – back to Alstonville. Some Christmas shopping somewhere around here.

24 Dec – Christmas eve at the Federal hotel in Alstonville.

Dec/Jan – Christmas. Test matches.

Byron Express bus. Byron 17:00 7 Jan – Brisbane 18:00 7 Jan.

7 Jan – 10 Jan. In Brisbane. See Leesa, Matto, Jillian. Eddie’s party.

QF509: Brisbane 07:05 11 Jan – Sydney 09:35 11 Jan

QF149: Sydney 11:35 11 Jan – LA 06:00 11 Jan

UA6452: LA 10:35 11 Jan – Tucson 13:07 11 Jan

Precalc results

December 17, 2008 at 8:16 pm | In Teaching, Uni | Leave a Comment

Results are finalised. Will be released to students tomorrow.

5 Bs, 15 Cs, 6 Ds, 7 Es, 2 Ws

Precalculus-metrics

December 17, 2008 at 10:05 am | In Teaching, Uni | 2 Comments

The precalc final exam grading took about six hours yesterday. I graded a question about a rational function that had a slant asymptote.

More interesting were the statistics that we got in a big spreadsheet later that night. The overall average on the final was 110/200. To get a D in this course you need to average 60% overall. Let it never be said that the UofA math department doesn’t have high standards.

My section averaged 106/200, but casting around for something to blame other than myself I came up with the idea that other people just force their poorly performing students to drop. I only had 2 students drop out of the original 35 while other sections had much larger numbers leave the course. Taking the final number of students enrolled as a proxy for number of students who dropped (this isn’t perfect but it’s kind of close) I did some regression:

regression1

There’s definitely some kind of correlation there: what does R^2=0.06 mean?

Anyway, if I put x=33 into this equation I get about 108.5. So I’ve explained away 1.5 points from the average from the fact that I didn’t force many people to drop. I’ve got ideas for the other few points so I feel happy that I did an average job.

Light Christmas reading

December 17, 2008 at 9:21 am | In Mathematics, Uni | 3 Comments

The kind of things I’ve been doing lately:
- Project on ranks of quadratic twists of elliptic curves over function fields.
- My talk and my coauthor’s talk for above project.
- Paper for algebraic geometry class on Groebner bases.

A poll

December 9, 2008 at 8:18 am | In Uni | 10 Comments

What do people prefer for a projected talk in a fairly dark room?

Black on White,
White on black, or
Light grey on black.

You can download a zip file with all three versions here. But of course bear in mind that you are looking at it on a computer screen which is not what the question is asking about.

Semester coming to a close frighteningly quickly.

December 2, 2008 at 10:31 pm | In Mathematics, Uni | 10 Comments

Things left to do:
- Teach 2 classes + 3 review classes.
- Grade 1 test, 1 lab, 1 quiz, and about 5 homeworks (I’m a little behind…).
- Proctor Invigilate and grade mark final exam for precalc high school maths taught at the university level.
- Attend two algebraic geometry and three Tate’s thesis classes.
- Finish writeup of research project on ranks of quadratic twists of elliptic curves over \mathbb{F}_q(t).
- Write talk on number theory in function fields for above project.
- Write algebraic geometry expository paper on Groebner bases.
- Do some algebraic geometry homework maybe?

It should all be done by about Dec 17 and then I’m leaving to fly back home for Christmas on the 20th.

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