Body Posture

Adrian Lima, or so I

I am being told that this is a photo of Adriana Lima.

Beautiful girl. But this is not an article about her beauty, at least not directly. To me this photo is exceptional because it clearly shows her posture.

I guess I should pay more attention to my own body posture, as too much time in school and in front of computer made me hunched over. Not quite a new year’s resolution, but something to keep in mind….

P.S. This photo was shamelessly stolen from here, however I am sure that a goodle search would find many more pictures of her.

Searching options in Mail.app

I was stumbling through a big pile of mail this morning and wanted to search for all messages whose subject did not contain a certain keyword. It turns out you can do some decent searching in Mail.

Straight from the Help:

When you search entire messages, you can refine your search by using logical symbols to represent “and” (&), “or” ( | ), “not” ( ! ), and parentheses. For example:

“cat & dog” finds messages containing both “cat” and “dog”

“cat | dog” finds messages containing either “cat” or “dog”

“cat ! dog” finds messages containing “cat” but not “dog”

“cat & (dog | newt)” finds messages containing both “cat” and “dog” and messages containing both “cat” and “newt”

Paternity Tests

On a black board in the math tutorial room someone wrote:

“For Paternity Test Results call 1-800-RUMYDAD. www.rumydad.com”

Below it, someone else wrote:

“Translation: Is your family Pareto Optimal? Prune your family game tree at www.rumydad.com”

For some reason, this amused me.

Must be high blood sugar levels, or something.

Things that piss me off (part I)

I am editing video footage that was digitized from a VHS tape. Footage itself is of Wendy Whited Sensei, from 1997 or 1998. I’ve never met Whited Sensei myself, but based on the video, I like her. And I like her style. And she is very very very good. But this is not about my likes.

This is about things that piss me off. Imagine a standard martial arts seminar (I were told that this is a fairely standard martial arts seminar). Instructor, generally a high ranked instructor, was brought in, at big expense and effort to teach.

A part of the idea is to make the money back by the hosting organization (paying for flight, hotel, meals, plus honorarium all add up, and God forbid you need to add rent of the location costs to it too). So hosts invites a bunch of local dojos that kind of do the same thing to send their members over, and hopefully to learn new things.

Usual practice is structured so that Sensei demonstrates something while everyone else is formally sitted, and then folks break into pairs or groups, and try to duplicate what Sensei shows to the best of their ability.

In the meanwhile, Sensei is walking around, and is watching everyone practice, and tries to spot and correct mistakes, explain concept behind the action, and hopefully nudge the practitioner to a higher level of understanding and practice.

Generally, protocol is that on the mat senior instructor is the king and dictator – lives of everyone on the mat are his or her responsibility (this is, after all martial arts, and one can end up breaking wrist, hand, neck, you name it), and when senior instructor demonstrates something, everyone around should stop what they are doing, sit down where they are, and watch. Last bit actually makes sense – if some people are practicing, and there are flying bodies in the air, and some people are sitting, chances are that blending will occure between flying and sitting person, not flying person and a mat.

Also, chances are that everyone is making the same mistake, and instructor is trying to correct it not for just a single person (if that were the case, instructor generally would tell everyone to keep practicing).

So here I am, trying to edit a video tape into somewhat coherent thing, and what do I see?

Two people, from the same dojo (I can tell as they have identical crests on their uniforms) always practice together. Logically, in a seminar setting you would try to pick as a partner someone else each time, if only to get a chance to practice with some higher ranked people, and maybe learn something from how they do their technique, right? Well, maybe these two folks are both higher ranked then the instructor, and know better then her what they are doing? No, they are not second highest ranked people on the mat after senior instructor – far from it. In fact they are not even black belts. Mudansha.

Whenver instructor would try to correct the mistakes of someone in the dojo, these two fellows are the last ones to sit down (if at all) and watch.

When instructor spotted something they were doing that was far from correct (I am not an expert, yet even I could see that what they do was different from what they were shown), and walked over to correct one of them, he started argueing back with her. Mudansha talking back to a 6th degree black belt who practiced longer then this fellow was alive. *blink*

I mean, these two fellows came to the seminar, paid money, got on the mat, only to do what? Practice same way as they practice “at home”, with the same partners? Insult the guest instructor? Not learn anything?

Some minds are forever shut, and one can’t open them even with a crowbar. Upside the head.

Oh, and what do I care? Well, these two fellows parked themselves right in front of the camera during their practice. Every technique. So most of the time, when I were trying to edit the video out, and just keep the bits where Sensei is demonstrating, they kept on obstructing the screen, or shaking the camera. *sigh*

Coming soon: Part II – things that piss me off in filming without script and without clear idea, on filming with cheap hardware that can’t focus properly, on filming without tripod, on zooming in waaaay in, and then panning 180 degrees, and all the other joys of filming, taking pictures, and trying to edit a video together.

Show that if b ∈ R, R is a Eucledian domain and a is a non-zero non-unit, then bR/aR = {r + Ra : r ∈ bR} is an ideal in R/aR.

Suppose that R is a Euclidean domain and a ∈ R is a non-zero non-unit.

For an element b ∈ R consider the subset bR/aR = {r + Ra : r ∈ bR} of R/aR.

Let r + Ra, s + Ra ∈ bR/aR so that r, s ∈ bR, then r + s ∈ bR which gives (r + Ra) + (s + Ra) = (r + s) + Ra ∈ bR/aR.

Let r ∈ Ra ∈ R/aR and s + Ra ∈ bR/aR so that s ∈ bR, then rs ∈ bR implies that (r + Ra) · (s + Ra) = (rs) + Ra ∈ bR/aR.

Hence bR/aR is an ideal in R/aR

Just in case you weren’t sure that it was.

It’s almost 2 am, what do you expect?

Oh, and I goofed while writing a game theory midterm last week, and only got 92/100.

I forgot to do part II of question 1, inspite of the note on the test paper saying “Don’t forget to do part (ii) below”.

Argh!

Oh, and should I do a blurb on the math behind error correction, specifically, as it’s implemented on CDs?

SCSI to ATAPI bridge board

I realize that SCSI is pretty much dead. It makes me cry, as a whole number of my shiny Sun systems, like dara, an Enterprise 4000 server, all take SCSI.

If, for some reason one still wants to hook up an IDE/ATAPI DVD burner or somesuch to a SCSI bus, comrades from the field are recommending Acard Technology AEC-7720U SCSI to IDE bridgeboard.

link, which might die whenever Acard folks decide to change format of their site).

At 69 USD per board, somewhat costly.

As I’ve mentioned before, I also own a Promise UltraTrak TX8, which is an IDE RAID tower with SCSI interface to the host system.

So I wonder if there is a dongle or somesuch that can convert SCSI to firewire, so I could start using my 800 gig storage array with an iBook 🙂

Any suggestions?

Sun Studio 11 (Compilers/Developer Suite) is now free

Alan Coopersmith (whom I’ve never met, yet whom I respect about as much as I respect Casper Dik) mentions that Sun Studio 11 is now free.

Download link is here.
Specifications – Basically Solaris 8 or newer on Solaris SPARC or x86. There is mention of Linux (RH 4 or Suse 9) on the sysreq page too, but I am kind of both disinterested by Leenuks, and somewhat puzzled, as RH 4 is circa 1997 and Sun folks probably mean Fedora 4. Or something.

Here Alan is doing some comparisons between Sun cc and gcc for compiling the X subsystem for Solaris.

I own single license for Sun Studio 6, which I picked up at a dot.com bancropcy auction (it was a box with never registered license codes) for 100 CAD. As part of a deal I got about half a cubic meter of Cisco propoganda for Cisco 25xx routers, but it was worth it.

Owing a license for a Sun’s C compiler for a while made me the coolest kid on the block, as I could compile 64 bit versions of IPF (gcc at the time stood in the corner and nerviously smoked whenever it had to compile 64 bit kernel modules)

Looking for a book of poetry….

Looking for a book of poetry (I can imagine surprized groans now. Poetry? What poetry? stany can read?)
Specifically this one

Mikhail Lermontov: Major Poetical Works by Anatoly Liberman (Editor)

It is an out of print book of poetry translations of Michail Lermontov :

I write to you and truly wonder:
What in the world has made me write?
For you, I’ve gone away and under
And must have forfeited this right.
You know that, though we are asunder,
Your image was too much to lose.
Of course you do! — Such boring news…

Between attacks and other dangers
We live in God-forsaken holes.
But do you care? Our souls are strangers:
Indeed, the normal case for souls.
[…]
(my source only quotes the beginning of this piece. Sorry)

So, here is a funny thing. If I search for this book on Amazon US site, I get two listings for a used book, one for 30$, one for 135$. If I look for it on Amazon Canada site, I get one used book for 284.55 CAD.

Global economy. Go figure.

Oh, and author of the book, Anatoly Liberman, contributes to an Oxford University Press Blog.