Home

Text

Discrete math background

Wed, 2008-11-19 16:38 — Mark Dow

    "...we try to make predictions about Nature, to anticipate what we’ll see in places we have not yet looked. If additional observations corroborate our expectations, then we’re on the right track. Several skill sets are involved: one must know how to idealize the world, and then how to work with that idealization.

"Changing Brains" example animations

Fri, 2008-09-26 10:07 — Mark Dow

 

"Changing Brains" example animations

    These images, animations and references are for a Brain Development Lab video project called "Changing Brains" about the interactions between experience and brain development in children. They  illustrate the modularity of various brain functions.

Human brain animations

Mon, 2008-09-22 10:29 — Mark Dow

 

Human brain animations

 

Resources for, and animations of, a human brain. These are primarily surface renderings from MRI volume data. Space Software was used for most manipulation and rendering.

Example animations

Human brain serial slices of MRI animations

remove_background_peak_image.m, program description

Sun, 2008-09-21 20:35 — Mark Dow

 

Description of remove_background_peak_image.m (MATLAB)

See attached code file, remove_background_peak_image.m.

[ vPeak fFWHM_range imZeroBackground ] = remove_background_peak_image( strInputFilename, fFWHM, bShow )

USAGE:  [ vPeak fFWHM_range imZeroBackground ] = remove_background_peak_image( 'test_remove_background.png', 1.5, true );

Test renderings of the P22 virion EMD-1220 data set

Mon, 2008-09-15 10:41 — Mark Dow

Test renderings of the P22 virion EMD-1220 data set

 

Also see larger version of many of these images in the Volume Renderings gallery.

 

Central slice. Note the needle and lead dsDNA detail (near center), and more than four concentric shells through the horizontal plane at center of capsid.

Stereo pairs (cross-view):

P22 virion structure, EMD-1220 rendering notes

Wed, 2008-09-10 09:27 — Mark Dow

P22 virion structure, EMD_1220 rendering notes

"For a physicist, it is indeed a great joy to learn how we can use beautiful mathematics to understand the real world."  In Stephen Weinberg's "Without God" (9/25/08, The New York Review of Books)

Data source

Processing notes

Helicopter tricks

Wed, 2008-08-20 15:02 — Mark Dow

Here are two videos of hard to believe helicopters, both pushing technological boundaries:

Insane RC helicopter flying

World's smallest personal helicopter

Notes on photography 6/28/08

Sat, 2008-07-12 17:08 — Mark Dow

6/28/08 Bridge Thin photography

Doug Heiken and Mark Dow spent a half day taking video and stills of the Bridge Thin parcel (http://www.wikimapia.org/#lat=44.1654519&lon=-122.3126686&z=17&l=0&m=h&v=2). Warm sunny day.

10:10 Left Mark's house.

10:40 Diversion point for the Walterville Canal (http://www.wikimapia.org/#lat=44.0766565&lon=-122.7646637&z=17&l=0&m=h&v=2). (photo 18 mm, Canon SLR)

11:12 Blue River Resevoir turnoff (http://www.wikimapia.org/#lat=44.1650594&lon=-122.2898698&z=17&l=0&m=h&v=2).

123456789…next ›last »
Syndicate content