Eamonn O'Brien-Strain

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date: '2004-07-20 16:53:38' layout: post slug: whale-watching status: publish title: Whale watching wordpress_id: '28' categories: Travel


Just back from an amazing whale-watching boat trip on the straits between San Juan Island, Washington State and Vancouver Island, British Columbia. We were lucky in that all of the local pods of Orca had come together to socialize and hunt for the salmon sheltering from the strong ebb tide currents in coves along the coast. We saw lots of the orca swimming along in family groups, splashing about as they herded the salmon, and popping their heads out of the water to keep an eye on the boats.

Interesting. I think I might be able to use this in my “personal data mining” experiments.


Update 2019-09-14: This code is now on Github at https://github.com/craignm/sequitur


date: '2004-07-06 11:54:37' layout: post slug: memory-footprint-of-java-objects status: publish ref: http://www.javaworld.com/javatips/jw-javatip130_p.html title: Memory footprint of Java Objects. wordpress_id: '26' categories: Programming


A C/C++ programmer, used to using sizeof, might be suprised how hard it is to figure out the memory footprint of Java object. Of course relying on memory sizes is very bad for portability, but sometimes when tuning applications you do need this information.

This article walks through some measurments that reveal:

Object Size (bytes) Overhead (bytes)

Overhead (percent)

Object 8

Integer 16 12 300%

Long 16 8 100 %

int[n] 16 + 4*n

16

char[n] 16 + 2*n 16

String, length n 40 + 2*n 40


date: '2004-07-04 22:27:10' layout: post slug: glimpses-of-the-surface-of-titan status: publish ref: http://photojournal.jpl.nasa.gov/catalog/PIA06407 title: Glimpses of the surface of titan. wordpress_id: '24' categories: Science image: http://photojournal.jpl.nasa.gov/jpeg/PIA06407.jpg image-text: Titan


Finally we are starting to be able to see some detail of Titan's surface through the haze of its atmosphere.

http://photojournal.jpl.nasa.gov/catalog/PIA06407

Screenshot showing Gmail

Got a gmail account a few days ago. So far I like the interface a lot better than yahoo. As is usual with Google it is very clean and uncluttered. So far the targeted ads are unobjectionable, and the “related links” might actually be useful.


date: '2004-06-16 11:30:03' layout: post slug: control-room status: publish ref: http://www.salon.com/ent/feature/2004/06/04/control_room/index_np.html title: Control Room wordpress_id: '22' categories: Society


Last night we saw the film “Control Room”, a behind-the scenes documentary of Al Jazeera covering the initial invasion of Iraq.

I watched some coverage of the war from the Arab side on the Mosaic news program so there was nothing really new factually in this film for me. It was still well worth seeing however as it, for example, demonstrated the complicated realities of how journalists, whether from Fox News or Al Jazeera, unavoidably bring a point of view to their coverage, however committed they are to reporting the “truth”.

One of the compelling characters in the film was a press officer at Central Command whom Salon reports is being muzzled by the Pentagon.

From JPL:

Shown here is a mosaic of seven of the sharpest, highest resolution images taken of Phoebe during Cassini's close flyby of the tiny moon. The image scales range from 27 to 13 meters (90 to 43 feet) per pixel.

Open up this full-res image, turn off the browser image shrinking and pan around in the image, imagining yourself flying just a few kilometres above the surface. It's quite exhilarating.

Well, the upgrade of my obrain.com home server from an ancient version of Redhat Linux to the latest stable version of Debian Linux had mixed result. After struggling with a somewhat confusing installations process I eventually succeeded in getting things up and running, but in the process I lost my old entries for the Movable Type blog I was hosting. So here I am re-starting the blog again, but this time hosted on blogger’s own servers. Hopefully I can trust Google with my data more that I can trust myself.

All the previous entries in the blog were hand-entered by copying from the Google cache or the wayback machine copies of my pages. It is not complete but hopefully it should include the more popular pages (otherwise the Google and wayback machine spiders would not have saved them).


date: '2004-05-09 03:18:54' layout: post slug: citizens-keep-an-eye-on-government status: publish ref: http://www.flickr.com/photos/eob/47609285/ title: Citizens keep an eye on government. wordpressid: '109' categories: Society image: http://static.flickr.com/32/47609285e5a4e4a8e9_m.jpg image-text: Reichstag


Citizens keep an eye on government., originally uploaded by Tolka Rover.

In the Reichstag dome you can see down into the parliament chamber with the help of the mirrored central column. [Explored] [IMG_2434-reichstag]


date: '2004-01-24 12:11:04' layout: post slug: fossil-sites-in-california status: publish ref: http://www.iwaynet.net/~mperona/fossil1.htm#california title: Fossil Sites in California wordpress_id: '18' categories: Science


Fossil Sites in California

Some sites near me:

“Capitola, near Santa Cruz — The beach is a good site for Pliocene fossil collecting. Clams, snails and sand dollars. They are in the sandstone of the sea cliffs and in the talus that falls on to the beach. Go at low tide, walk a few hundred yards south of the Esplanade at Capitola past the sewage outfall. “

“Jack's Peak near Monterey — there are fossils of little leaves and shells in shale a hundred yards down the trail from the west parking lot. Also, there's lots of jasper at Point Lobos, 5 miles south of Monterey. “

“Pleasanton, Alameda Co. — upper Miocene brines sandstone — Go south on Highway 680 from Pleasant, turn right on to Castled Rd., then left on Pleasanton Sunol Rd. Go approx. 1.2 miles, pass under railroad passover, stop at large hill cut for railroad on left side (east) of road and rail tracks. The whole cut, plus the road banks and down slope to right of road is brines sandstone with huge assemblage of miocene marine fauna. Watch out for trains — Stay away from the railroad tracks! This is one of the best exposures in area.”

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