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Lakshmanan Valliappa
Works at National Severe Storms Laboratory
Attended Indian Institute of Technology, Madras, India
Lives in Norman, OK
158 followers|309,944 views
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Why a limited roll out of a credit card security program does not work
American Express has apparently started a program called " SafeKey ". It's something like "Verified by Visa", except that instead of rolling it out worldwide, they decided to start out in the UK. What's the problem with a limited roll-out of something like ...
American Express has apparently started a program called "SafeKey". It's something like "Verified by Visa", except that instead of rolling it out worldwide, they decided to start out in the UK. What's the problem with a limit...
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Texas, the uber-America
There is a famous quote, "As California goes, so goes the nation". An engrossing, witty book by Erica Grieder -- Big, Hot, Cheap, and Right: What America Can Learn from the Strange Genius of Texas -- argues that it is Texas that epitomizes America.  She rea...
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Why American universities excel at research
I was on an airplane in India a few years ago and got to talking to the fellow in the seat next to mine. When he heard what I did for a living, he said he had something to ask me.  "What is it?," he wanted to know, "that makes American universities so good?...
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The magazine Slate is infamous for their counter-intuitive arguments wherein they argue that every expert is wrong on something because of one minor detail.  However, this reads true: Chamberlain's story is of a man who foug...
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Have him in circles
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The First Muslim
It took me a while to read The First Muslim: The Story of Muhammad primarily because I didn't want to read it on airplanes (a sad commentary of the times we live in!). I'd heard bits and pieces of Muhammad's story before, but did not know much about his lif...
It took me a while to read The First Muslim: The Story of Muhammad primarily because I didn't want to read it on airplanes (a sad commentary of the times we live in!). I'd heard bits and pieces of Muhammad's story before, but...
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Traffic engineering search-and-replace
A few months ago, Norman changed its traffic signals.  At left turns, instead of a steady green light for "yield", we now have flashing yellow arrows. The first couple of times, the flashing yellow arrow was a surprise, but then I got used to it.  It is bet...
A few months ago, Norman changed its traffic signals.  At left turns, instead of a steady green light for "yield", we now have flashing yellow arrows. The first couple of times, the flashing yellow arrow was a surprise, but t...
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Preserving figs
We've suddenly discovered the drawbacks of growing figs in Oklahoma -- by the time it's warm enough for figs to start appearing, it's end of summer and frosty nights are here. What do you do with 5 pounds of unripe figs? The internet to the rescue ... figs ...
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Our team won the 2013 NOAA Tech Transfer award for Rotation Tracks -- with +Travis Smith   +Kiel Ortega  +Greg Stumpf  Kevin Manross Karen Cooper, John Cintineo Madison Miller  (the link explains what Rotation Tracks are and how it is used).  http://www.nssl.noaa.gov/briefings/2013/04/r2o-success/
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Congratulations! Well done!
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You can pretty much tell who wrote a supposedly anonymous review of a scientific paper. Just look at the papers the reviewer cites. Reviewers cite a whole bunch of their own papers and say that you need to address/acknowledge...
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People
Have him in circles
158 people
Cynthia Teague's profile photo
David John Gagne's profile photo
Shiva Kumar's profile photo
Janelle Janish's profile photo
Work
Occupation
Scientist
Employment
  • National Severe Storms Laboratory
    Scientist, present
Places
Map of the places this user has livedMap of the places this user has livedMap of the places this user has lived
Currently
Norman, OK
Previously
Cape Palmas, Liberia - Chennai, India
Links
Contributor to
Story
Introduction
I research and create real-time algorithms for severe weather analysis and prediction at the National Severe Storms Laboratory in Norman, Oklahoma.

My blogs:
  1. Not That Sane (general-purpose blog)
  2. Too Late Now! Mishaps at the bridge table (bridge blog)
  3. WDSS-II blog (my work)
Education
  • Indian Institute of Technology, Madras, India
  • The Ohio State University, Columbus, OH
  • University of Oklahoma, Norman, OK
Basic Information
Gender
Male
Other names
Lak
Lakshmanan Valliappa's +1's are the things they like, agree with, or want to recommend.
Balloon Smasher
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Welcome to Touch balloon, you are only touch away from owning multiple balloon, where you can decide what balloon to smash.you really enjoy

mPing
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The National Severe Storms Laboratory (NSSL) needs your help with our research!As a, the Precipitation Identification Near the Ground projec

End Piracy, Not Liberty – Google
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Millions of Americans oppose SOPA and PIPA because these bills would censor the Internet and slow economic growth in the U.S.. Two bills bef

xkcd: Authorization
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Buffett-Ducking Billionaires Avoid Reporting Cash Gains to IRS
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When billionaire Billy Joe “Red” McCombs, co-founder of Clear Channel Communications Inc., reported a $9.8 million loss on his tax return, h

No, Congress did not declare pizza a vegetable
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In sight, in mind
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THE best data visualisations are the products of a desperate, raw urgency to inform. That power is packed in the punch of Pitch Interactive,

Starting Wars Is A Bad Idea
www.slate.com

Here's my lessons learned from the U.S. invasion of Iraq: Starting wars is a bad idea. The classic analysis of this case is an economic one,

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Cyberchase 610 Spheres of Fears Part 1
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YouTube: The OFFICIAL Cyberchase website! http://pbskids.org/cyberchase/ The season finale for season 6. English captions are available!

Knock Out Team Strategy
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Knock Out Teams Strategy For the Intermediate Player By Marty Nathan. The most popular tournament format is undoubtedly knockout teams. You

Corzine Crashes Like It’s 2008
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The former chief of Goldman Sachs was on track to get a $12 million golden parachute for failing at MF Global Holdings. Didn’t the financial

The Way Forward | NewAmerica.net
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Fake tears
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CONSIDERING the frequency with which gun massacres now occur in America, the media attention they garner, and the failure of that attention

Fake tears
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CONSIDERING the frequency with which gun massacres now occur in America, the media attention they garner, and the failure of that attention

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