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Karma June 30, 2007

Posted by gordonwatts in computers.
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Yes. Jobs got me. I wrote that iPhone blog posting the day before yesterday and yesterday. Early yesterday my main Windows computer’s hard disk started giving me S.M.A.R.T errors and then this morning my cell phone basically up and died (the white screen of death). And all the day before I travel to Europe.

That is the power of Karma. I will always worship Apple from now on.. I will always worship Apple from now on… I will always worship Apple from now on…

On the other hand, recovering the computer was pretty easy. When the error occured, Vista asked me (repeatedly) to make an image backup. I did to one of those USB drives. I then purchased a new 500 GB hard drive. Because Dell’s engineering is so good, I was able to swap out the old drive in about 5 minutes with no tools. Then I booted from Vista’s DVD, selected restore-from-image, and two hours later I had my computer back right where I’d left it a few hours before. With a new drive. That was sweet!

Now, getting the cell phone fixed is going to be almost impossible. It looks like a hardware problem to me.

iPhone Blog Comments June 30, 2007

Posted by gordonwatts in blog.
6 comments

Ok. Enough with the fun and games. It seems like every post of mine that has the works “cell” and “phone” in them has been hit with a comment that points back to some iPhone accessory. The people that leave these comments are trying to build up search-engine link-love for their products. I’m trying to keep up with deleting them, but, please, get on with actually making a good product so people will link to it rather than doing this!

Maybe I should freeze posts so that after 30 days (or some such) you can’t continue to leave comments.

The Single Top PRL Is "Worth Reading" June 30, 2007

Posted by gordonwatts in physics.
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My Dad just pointed out to me that D0’s single top PRL has been marked by PRL as “worth reading.” I wasn’t aware of this designation — but it is generally meant to get readers who are in other sub-fields of physics to read the paper because it is both well written and important. That is cool!

I am also impressed that my Dad still gets the printed version!

N.B. Some of the above links point into the PRL archives. These may require you or your associated university to have a subscription. Sorry!

iPhone? June 29, 2007

Posted by gordonwatts in computers, life.
10 comments

This is a rant. But probably there is some real insight into my personality. You shouldn’t read this. :-)

Those of you who know me know I carry around a Windows laptop. Indeed, all my machines are currently windows. I use Linux a lot, but I Real VNC into those or run them as a virtual machine on top of windows. My wife has a Mac, and I used to do a lot of work with Macs as a hobby (even helped to run a large Mac ftp site when I was a graduate student). But I just can’t get things done on them any longer. Perhaps at 40 I’ve ossified into the Windows way — it works too well for me. That isn’t to say that I don’t have complaints about Windows!

For my media player I’m also frozen out of the Apple world: I refuse to purchase music by-the-track. The subscription model is cheap and it lets me try all sorts of new music on a whim. I can’t get enough of it. I use Yahoo’s service and that is just fantastic for me. I’m actually a bit nervous about this idea of non-DRM music: a subscription service can’t really live with non-DRM music… Perhaps a monthly subscription gets you a certain number of songs like eMusic?

But on cell phones the jury is still out for me. Initially I went for small good looking phones (like the M600 from Moto – so old now I can’t find a picture of it). Those were good and worked like a charm. Never a hiccup. But then I tried a small smart phone, the Cingular 2125. This was a revelation for me. A small compact phone that automatically synced with my contacts and my email and calendar. The pleasure of being able to change a phone number on my main computer and about 10 minutes later having it automatically synced up with my phone… well, nothing quite so sweet. Then the baby arrived. My time has been split into even smaller parts. I decided to get a large smart phone with a keyboard. I can now really answer email when I’m sitting for 10 minutes someplace. Mostly perform triage, etc. Sadly it is large enough it leaves a lump in my pants pocket.

You’ll note that both these phones have their OS made by Microsoft. It is functional and sometimes it just hits the sweet spot. Both phones, however, have a list of bugs that sometimes make me want to throw them at the wall. I don’t know if they are Microsoft bugs or the hardware manufacture’s bugs — whatever, they can be painful. A good friend of mine swears by some of the Nokia smart phones. I need to spend some quality time with one of those the next time I see him at CERN.

And now comes the iPhone. First of all, it is too much for me, so I won’t be buying it just now. But, after reading the various web sites (keep in mind almost no one has officially used an iPhone yet):

  • Battery Life: this is the biggest problem with large smartphone’s these days. 8-12 hours is just not very good. I’ve not seen a smart phone that solves this. Mine certainly doesn’t.
  • wifi integration. Most modern phones do this now (the iPhone included). When 3G isn’t available or too expensive (for me in Europe), it would be great. Wifi, however, is flaky. My current phone, when it looses the wifi connection, likes to turn on the 3G connection. This will kill my cell phone bill in Europe. I hope iPhone gets this switch over better.
  • Speed. All these phones have relatively snappy processors. The reviews of the iPhone, however, all comment on how fast it is. The comments sound like it is better than the sluggish (but functional) performance I see on my current phone. That would be great!
  • Development. This matters for almost no one on the broad cell phone market. But, I like being able to develop for my cell phone. The fact that I can write C# for my phone means that one day over Christmas I was able to develop a small app that downloaded and cached and then slide-showed an arbitrary set of pictures from flickr. This is great in a bar, and the fact that the cell phone network is flaky doesn’t affect it’s performance. One of the big problems I see with just about every cell phone app out there is they don’t assume a flaky network. Or maybe it is just me on Cingular. :-)
  • 3G. If you are going to depend on data coming into your phone, you need something high speed like wifi or 3G. 3G is much more reliable than wifi for my usage patterns, as I’m often in places that have no free wifi – and there for only 10 minutes: not worth it to pay. Apple will fix the lack of 3G quickly, I’m sure. But I also appreciated how Pouge’s review seemed to initially blame Cingular for the fact that it was the slower EDGE network that the phone used. Don’t worry — 3G will suck up more battery life too. :-) Hmmm, it would seem the slow network has become something of a “thing” — there is an article on the NYTimes website devoted solely to that! Hmmm, they seem to claim that wifi will make up for the lack of 3G. They are wrong. wifi is a local thing – a cell phone moves all over the place.
  • User Interface. I really like the idea that the iPhone is all screen. The bigger the screen the better (but keep the overall phone small!). When people say “you just have to trust the phone to accept your finger presses” I think they are right: my phone has a small # of buttons (larger than 1) and the rest is done by touch when it is closed. If I trust the phone and just push hard, it works just fine. The multi-touch sounds pretty cool.
  • Cost. About $400 is the most I’ll spend for one of these devices with their current set of capabilities: (phone, email, contacts, internet syncing, small music player).
  • Size. Make it small, but keep the screen large. Make it thin! It sounds like the iPhone does this better than my current phone. Fantastic.
  • Bugs. Kill them early. I hope Apple’s quality control is better than whomever is responsible for the bugs I see (HTC or Microsoft).

Ok. I’m adding to the iPhone hype. Sorry. My Dad claims he will get one, so I’m looking forward to trying it out when I am home for Christmas. Right now, back to packing!

The Prius goes Getto June 29, 2007

Posted by gordonwatts in life.
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While driving along a traffic clogged interstate here in Seattle today I passed a Prius owner driving along. He was smoking and had a road soda in hand. So not the image I have of a Prius owner. :-)

Together We Stand June 20, 2007

Posted by gordonwatts in physics.
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Listening to a Higgs talk yesterday talking about prospects for a Standard Model Higgs search in 4 fb-1 and 8 fb-1 of data (2008 and 2009 results) one realizes that neither experiment can really do the job alone. Together, the two experiments can do a lot and cover a rather broad mass range. But apart neither of us are going to be able to do all that much. The Higgs is just too hard to find!

Combining results is difficult. It is difficult because of errors. When DZERO says that it has a 20% error due to Jet Energy Scale, is that really the same error that CDF reports as its Jet Energy Scale? In all likelihood, the answer is no. To do the combination properly is key to get these sorts of thing right and clear. This will require quite a bit of collaboration between the two experiments. Together, we have a chance of ruling out large stretches of the low mass range of the Standard Model Higgs: exactly the area the LHC has the most difficulty with.

I can’t wait.

Pictures from the D0 Workshop June 20, 2007

Posted by gordonwatts in physics life.
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CIMG2605I have a few pictures up from the workshop that is going on this week at MSU.

Luminosity Profile June 19, 2007

Posted by gordonwatts in physics.
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LumiProfileYesterday, Dmitri, one of our co-spokes person, showed this plot. I like this plot because it really made me rethink what is going on with our experiments luminosity. I like plots that jar me out of some preconceived notion I have.

Our experiment lives and dies by the amount of data it gets. Until recently the Tevatron accelerator was breaking high luminosity records. These high luminosities are tough to handle for the experiments: so much data arrives in such a short time that we often have to throw some of it on the floor just to keep up! Not good. We tend to focus most of our conversation on these issues.

The plot, however, shows that the bulk of the data we collect is otherwise. That plot is the luminosity profile for Run IIb. IIb is since we installed our inner layer of silicon — last summer. The x axis of that plot is the luminosity. The bulk of the events we have recorded were taking close to 50E30 — a fairly low luminosity (we get stressed out at about 200 or above). So it isn’t incorrect that our systems are still optimized for those lower luminosities: that is where we get most of our data!

That being said, however, there is a general rule of thumb in particle physics. New and interesting results and physics only occurs when you double your data. Most results coming out of the experiment are about 1 fb-1 of data. The next round of results will be between 2 and 3. After that we will need more than 4 to make real progress. In order to do that in a timely fashion (i.e. before the LHC starts up), the Tevatron will have to deliver more and more luminosity. One main way to do that is move the average of that plot to the right! And then we will need to re-optimize our system to deal with the higher luminosities!

This plot was done by Boris Tuchming for some of his muon studies. If you want to see it in context, check out D0’s talk at the P5 meeting.

Update: See comments for more details of the makeup of this sample.

Rumor News June 18, 2007

Posted by gordonwatts in physics.
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A fairly decent article on the rumor appeared. It is written by Wired (but I could only find it on ABC news). I was alerted to this by T’s comments in my previous post. It actually tries to address what a statistical fluctuation means, and finishes up with the following paragraph:

Whatever the final outcome, the weeks of rumors and response say more about the sociology of science than about science itself. The hard physics will come only when (and if) data is released, and the business of testing, interpreting and re-analyzing begins.

Hear! Hear! Worth a read.

D0 Workshop June 18, 2007

Posted by gordonwatts in Uncategorized.
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Once a year the D0 experiment has a week long workshop away from Fermilab. It is organized around one or two themes. We’ve been all over the place — France, for example. This time, we are in East Lansing. It is hot hot hot! But it was just announced that next year’s workshop will be in Prague. That should be a lot of fun!