Author Archives: mt4

password-free ssh and writing executable bash scripts

Posted on May 16, 2011 by mt4

First, a tangentially related note on password-free ssh and writing executable bash scripts.  By example… I wanted to quickly login to the login node for the research computing cluster at Rice University (all names/addresses have been changed).  Here’s how one … Continue reading →

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Some notes on reconstruction algorithms and “choosing the right parameter”

Posted on May 4, 2011 by mt4

First, somewhat unrelated, here are some Acrobat Reader shortcuts.  I’m especially excited about Alt + <– and Alt + –> to go backward or forward a “view”.  So for example, in a paper with internal hyperlinks to the citations as … Continue reading →

Posted in compress(ed/ive) sensing, mathematics, shortcut keys, signal processing | Comments Off on Some notes on reconstruction algorithms and “choosing the right parameter”

Microscopy Lamp

Posted on April 28, 2011 by mt4

For my microscope system I need me some white light.  At first I went with a high power LED from thorlabs, and instead of paying some hundreds of dollars for their driver, I built one myself for much less.  The … Continue reading →

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SUG@R – grid computing at Rice

Posted on April 19, 2011 by mt4

Grid computing, with some effort, can result in huge gains in computing power per unit time.  Its most straightforward use is to run one single script with many different parameters.  Here are some essential documents from the Rice IT website: … Continue reading →

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hyperlinks and alphabetized lists in latex

Posted on March 17, 2011 by mt4

There are so many things to learn and not quite as many ways to record what it is you’ve learned. There’s not many things more frustrating than the feeling “I knew a thing some time ago, but now I’ve forgot” … Continue reading →

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cygwin, bash, mingw, open source matlab for windows. And SUG@R at Rice

Posted on March 10, 2011 by mt4

It’s been years since I submitted a job to a computer cluster, and I’ve since purchased a Windows 7 machine, and have a Windows 7 machine in my office, Windows XP in my lab… Right now we’re testing out how … Continue reading →

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Circulant Matrices, Gabor Frames, Weyl-Heisenberg groups, and the Fourier Transformm

Posted on March 2, 2011 by mt4

In signal processing the marks of great physicist-mathematicians of the early 20th century and beyond are everywhere.  Apparently when Gabor authored his seminal paper (cited by 4087 according to google scholar), he was building on the foundations of laid by … Continue reading →

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More on lasers

Posted on February 21, 2011 by mt4

Looking more at lasers, specifically for a 532 nm diode-pumped solid state laser, I’ve found two companies, Coherent and Klastech, that claim to solve the “green noise” problem with these.  I didn’t know there was a problem!  But apparently when … Continue reading →

Posted in Lasers, Optics | Comments Off on More on lasers

Learning about lasers

Posted on February 16, 2011 by mt4

Right now I’m shopping for a laser.  Will it be a CVI Melles-Griot, or a Klastech, or Coherent, or Newport spectra physics, or what?  The truth is I know very little about lasers, but I’m learning by necessity, which is … Continue reading →

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