Archive for March, 2006

Update on the Stanford Dish Antennas

Monday, March 13th, 2006

Stanford began demolition of the five 60 foot dishes of the Bracewell Observatory.

Here are some remarkable photos of the construction of the Bracewell Observatory dishes on-site, circa 1967.

Jig Complete  on groundl

———————————————–
STANFORD NEWS RELEASE
March 10, 2006

Contact: Elaine Ray, News Service: (650) 723-7162, ray@stanford.edu

Relevant Web URLs:
Demolition delayed for decaying radio antenna farm with glorious past

Stanford University begins removal of Site 515 antennas

Stanford University today began the process of removing five radio antennas at Site 515 that were decommissioned for research purposes in 1979. The removal process is likely to take up to a week.

The antennas’ concrete mounting piers, with carved signatures of many visiting scientists, are being preserved, and the university is looking for a suitable place to relocate them on campus.

For almost two years, the School of Engineering gave serious consideration to the possibility of restoring and operating the antennas. After looking at all the possibilities that were brought forward, including some from outside the university, the university concluded that there was no program for use of the dishes that served its academic mission. While various ideas were suggested, none of the proposals received the support of academic departments or faculty members—managerial and financial support that would be critical if the site were used for teaching or research.

Site 515 and the five dishes were last used in research conducted 30 years ago. In the intervening years, research and teaching have progressed in a way that makes the academic use of these antennas impractical and inefficient. No compelling academic mission was identified that would justify the substantial resources necessary to restore and operate the dishes.

Removing the dishes in no way diminishes the recognition of the significant research contributions made by Professor Ron Bracewell at Site 515, particularly through the use of the original 32 dishes that were dismantled in the 1970s. The antennas and buildings at Site 515 are not historic under any definition contained in the General Use Permit, Santa Clara County ordinances or Stanford’s own stringent guidelines and practices for historic structures. The university evaluated the dishes using the same criteria used to preserve many historic buildings on campus and found that they do not warrant preservation.

EDITOR’S NOTE: The removal of the antennas is not open to press coverage. However, the News Service can provide photographic and other background material on the site. Contact the News Service at (650) 723-2558.

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Fast FTP

Monday, March 13th, 2006

What if you wanted to quickly move 1,000 local files to your webhost?

My suggestion is to compress all of those files into one large file. FTP that one large file to your server. Then Telnet/SSH to the specific directory where that file lives and uncompress it.

FTP clients such as CuteFTP Professional have a Compressed Transfers feature that allows for streaming compression for faster transfers as well as manual compress/deflate to/from ZIP, CAB or GZIP/Tarball archives. This feature compresses the files into one file, and then FTPs them across much more quickly than moving them individually.

If your FTP client doesn’t have a similar feature, then you can simply compress the files using your favorite compression program.

Then you will need to use a Telnet/SSH connection to your webhost, log in and uncompress your files using the following commands:

All of the below commands assume that you are within the same directory that the compressed file is in. To be sure type:

ls {enter}
If the file is there, you’re ready to go. If not type:
cd /big/dom/xdomain/www/directory/ {enter}
replacing the path with the correct path to your file.

If a file ends in .zip (for example, file.zip) type:
unzip file.zip

If a file ends in .tar (e.g., file.tar) type:
tar -xvf file.tar

If a file ends in .gz (for example, file.gz) type:
gzip -d file.gz

If a file ends in .tar.gz (e.g. file.tar.gz) type:
gzip -d file.tar.gz
and then
tar -xvf file.tar

If a file ends in .tgz (e.g. file.tgz) type:
tar -xvzf file.tgz

Exhaust Flame Throwers

Friday, March 10th, 2006

This won’t work on fuel injected vehicles so maybe I’ll try it on my carbureted ‘84 Toyota pickup.

Flame Thrower

FREE Shipping on Truck Accessories!

Process php on html pages

Thursday, March 9th, 2006

Previously I posted about a gentle introduction to php.

To make your .htm or .html pages process like they were .php, just add this line to your .htaccess file:

AddType application/x-httpd-php .html .php .htm

Or use:

RewriteEngine On
RewriteRule ^index.html /index.php

The .htaccess directory-level configuration file can also be used for:

Custom Error Pages
Password protection
Redirects
Prevent hotlinking of images
Preventing Directory Listing

Copper Tubing Light Tent

Wednesday, March 8th, 2006

An earlier post described and linked to the DIY pvc photographic light tent. Another DIY project, using copper tubing, is translated from the original blog post.

The luminous box has three roles. Firstly, to provide a support for a background. The background rests on the scheme of work then bends upwards to avoid any breaking of continuity. The result depends on the color used, but in general, the discounted goal is to thwart the prospect and to give the impression of a space much larger than the box. Secondly, the structure of the apparatus is used to tighten a white cloth whose role is to diffuse the light in order to attenuate the shades and the reflections, which places the subject in first role and assistance to present it in a more objective way. Finally, the apparatus is also used as point of anchoring for the sources of light. In the case describes here, I use two standard bulbs of 100W, which gives a enough powerful lighting for not needing a tripod.

Copper Light Tent

Trash Those Weak Photos

Tuesday, March 7th, 2006

NewsCollege offers practical journalism tips. One example of their tips is how to take better photos.

The arrival of digital cameras has given reporters a dramatic edge in photography. Remember the days when we developed film after an event and hoped like heck that we got a good shot? If they were all weak, we sometimes got assigned to retake the photos which was always difficult because the eventb finished long ago.

Digital photography now gives us the instant ability to shoot a photo and then evaluate the composition and then make corrections. You the instant you have taken a weak photo. The camera’s LCD viewer doesn’t hide it. Take advantage of this powerful tool and make your adjustments in the field.

Some basic tips to help you improve your photos immediately:

* Beware the horizon: Generally, try to keep the horizon to a minimum in your photos. Too much sky (which is often bright) can negatively affect exposure.

* Use camera’s exposure compensation (+/-): It’s a quick way to improve exposure. Generally, light or white-coloured objects require +1 to +2. Dark subjects require less, usually -1 to -2. Exposure compensation will help make your photo closer to what your eyes see.

* No family album shots: We’ve all seen boring family photos on albums. Your subjects know how to shoot shots like these. That’s why they try to crowd all kinds of people into the photo. Remind people early and often that you’re there to take ‘news’ photos.

* Avoid the execution-at-dawn pose: You’re shooting photographs, not people to death. Don’t line people up and fire away. Group shots are taken by the public, rarely journalists.

* What is the subject?: It’s the most crucial question a reporter can ask. The subject isn’t always the people. The subject may be an object, or an action. In these cases, the people become complementary to the scene. If a story is about carving pumpkins, you’ll want to emphasize a pumpkin, with the person complementing the scene.

* Go natural: Do people in the photo absolutely have to be looking at the camera? If you’re photographing homebuilders, don’t make them stop work so they can smile at the camera. Tell them to keep working.

* Change angles: Shoot verticals, horizontals. Try different angles. Move around the subject, shooting as you go. The best photographers do more than move their finger on the shutter. They move their feet.

* Show faces: Beware tops of heads, side views where the face is obscured.

* Consider mood: How many times have you seen a photo that accompanies a very serious story (ie. break-in crime story) and the people are smiling in the photo? It’s not reality. Set the mood.

* 1,000 words: Good photos tell 1,000 words. Weak photos say one word: ugh. Great photos should help tell your story. If readers look at the photo and don’t have a clue what the point is, you’ve probably got a photo that says little.

Is it Ether.com or Keen.com?

Monday, March 6th, 2006

Ether.com (currently in beta ) is a service where you can offer consulting online. You set your rate, set your hours of accepting calls and they handle the rest. They take 15% of your income from the call. Sounds interesting but there is some history to be aware of.

The idea is pretty straightforward. You can set up a price at which people can call you. So, if you’re an expert in something, you could, conceivably let people call you to pick your brain for a set price for a set time period. Does this sound familiar? Well, it certainly sounds like a web-based version of 1-900 numbers. And, if that sounds familiar, you may recall that greatly overhyped Keen.com hit the scene in late 1999 offering what sounds to be… um… the exact same thing (with over $70 million in funding): anyone could set themselves up as an expert to be called for a fee. It didn’t take long before Keen basically became an alternative to the 1-900 system, and rather than “experts” selling their time (as the company pitched when it launched) many of its customers were in the phone sex and psychic hotline business.

Everything Old Is New Again… Including Some Of The Exact Same Startups