-
<blockquote>
<p>
Many education researchers believe that different people learn differently, and have tried to understand and classify different learning styles [3]. One of the categorized types was that of a Visual Learner, who prefers "pictures, diagrams, or flow charts" [4]. There is a building momentum for creating material (images, animations, interactive displays) for use in science and engineering education [5]. The goal of this project is to join this wave of educators and create compelling and informative visual imagery to facilitate teaching lower- and upper-division computer science.
</p><p>
Ketrina Yim is a rare find–a student with an extremely strong computer science record and a love of illustration with educational interests. On her own volition, she penned several "tutorial sheets" for her fellow students learning Scheme in CS61A (Figures 1 and 2).
</p>
</blockquote> -
<pre>
(define (accumulate op initial sequence)
(if (null? sequence)
initial
(op (car sequence)
(accumulate op initial (cdr sequence)))))
(accumulate + 0 (list 1 2 3 4 5))
15
(accumulate * 1 (list 1 2 3 4 5))
120
(accumulate cons nil (list 1 2 3 4 5))
(1 2 3 4 5)(define (enumerate-tree tree)
(cond ((null? tree) nil)
((not (pair? tree)) (list tree))
(else (append (enumerate-tree (car tree))
(enumerate-tree (cdr tree))))))
(enumerate-tree (list 1 (list 2 (list 3 4)) 5))
(1 2 3 4 5)(define (sum-odd-squares tree)
(accumulate +
0
(map square
(filter odd?
(enumerate-tree tree)))))
</pre>
Archive for August, 2010
links for 2010-08-30
August 31, 2010links for 2010-08-20
August 21, 2010links for 2010-08-18
August 19, 2010-
<pre>
window.setTimeout("updateChat()", 10000);
</pre> -
<blockquote>
<ul>
<li><a href="http://blogs.webtide.com/gregw/" target="_blank" title="Greg's Webtide Blog">Greg's Webtide Blog</a></li>
<li><a href="http://blogs.webtide.com/gregw/entry/websocket_chat" target="_blank" title="Websocket Chat Discussion">Websocket Chat Discussion</a></li>
<li><a href="http://cometd.org/" target="_blank" title="CometD Project">CometD Project</a></li><li><a href="http://svn.cometd.com/trunk/bayeux/bayeux.html" target="_blank" title="The Bayeux Specification">The Bayeux Specification</a></li>
<li><a href="http://en.wikipedia.org/wiki/Push_technology" target="_blank" title="Push Technology">Push Technology</a></li>
</ul>
</blockquote>
<ul>
<li>Comet is a play on Ajax (cleaners)</li>
<li>The Bayeux tapestry has Halley's Comet in it</li>
<li>The basic concept is simple. You need a library to take care off all the details</li>
<li><a href="http://www.google.com/notebook/public/17894154587286929730/BDRp-SgoQ35r5r-kj#SDQUdSgoQmbzIragl">SPDY</a></li>
</ul>
links for 2010-08-14
August 15, 2010links for 2010-08-13
August 14, 2010-
<blockquote>
<a href="http://www.amazon.com/Man-Without-Words-Susan-Schaller/dp/0520202651" target="_blank">Susan Shaller's <em>A Man Without Words</em>
</a>
<br>
<a href="http://www.amazon.com/Thousand-Days-Wonder-Scientists-Developing/dp/1583333975/ref=tmm_pap_title_0" target="_blank">Charles Fernyhough's <em>A Thousand Days of Wonder</em>
</a>
<br>
<a href="http://www.wjh.harvard.edu/%7Elds/index.html?spelke.html" target="_blank">Elizabeth Spelke
</a>
<br>
<a href="http://www.amazon.com/Contested-Will-Who-Wrote-Shakespeare/dp/1416541624/ref=sr_1_fkmr0_1?ie=UTF8&qid=1280503174&sr=1-1-fkmr0" target="_blank">James Shapiro's <em>Contested Will: Who Wrote Shakespeare?</em>
</a>
<br>
<a href="http://www.amazon.com/My-Stroke-Insight-Scientists-Personal/dp/0452295548/" target="_blank">Jill Bolte Taylor's <em>My Stroke of Insight</em>
<a href="http://www.columbia.edu/%7Eas1038/P01-ann-senghas.html" target="_blank">Ann Senghas
</a>
</blockquote>
links for 2010-08-12
August 13, 2010links for 2010-08-11
August 12, 2010-
<ul>
<li>
<a href="http://www.google.com/notebook/public/17894154587286929730/BDRp-SgoQ35r5r-kj#SDQbrSgoQ2bjhjKYl">artificial scarcity – Google Search</a></li>
<li><a href="http://www.twit.tv/floss129">http://www.twit.tv/floss129</a></li>
</ul>
links for 2010-08-10
August 11, 2010-
"Join Precious (the bike) and Janeen (the rider) as they put aside their differences and attempt to raise a gob-load of money for LIVESTRONG as part of Team Fatty. Follow every sweatinâ mile, every dog chase, every brain fart Precious has, and then show your support by donating to their LIVESTRONG Challenge page."
-
<p>The discussion provides good perspectives on nosql issues.</p>
https://wiki.basho.com/display/RIAK/Links
<blockquote>
The "tag" portion in double-quotes is any string identifier that has a meaning relevant to your application.</blockquote>
<pre>
wiki.basho.com
basho.com
http://blog.mozilla.com/data/2010/05/18/riak-and-cassandra-and-hbase-oh-my/
http://github.com/basho/riakhttp://en.wikipedia.org/wiki/NoSQL
http://en.wikipedia.org/wiki/Dynamo_(storage_system)Click to access amazon-dynamo-sosp2007.pdf
http://en.wikipedia.org/wiki/CAP_Theorem
http://en.wikipedia.org/wiki/Eric_Brewer_(computer_scientist)
http://en.wikipedia.org/wiki/MapReduce
http://www.infoq.com/news/2009/07/leberknight-polyglot-persistence
http://webmachine.basho.com/
https://wiki.basho.com/display/RIAK/Links
http://en.wikipedia.org/wiki/Erlang_(programming_language)
</pre>
links for 2010-08-09
August 10, 2010-
<blockquote>
Cyborg Anthropology is a way of understanding how we live as technosocially connected citizens in the modern era. Our cell phones, cars and laptops have turned us into cyborgs. What does it mean to extend the body into hyperspace? What are the implications to privacy, information and the formation of identity? Now that we have a second self, how do we protect it? This presentation will cover aspects of time and space compression, communication in the mobile era, evaporating interfaces and how to approach a rapidly changing information spaces.
</blockquote>
<ul>
<li><a href="http://cyborganthropology.com/Main_Page">http://cyborganthropology.com/Main_Page</a></li>
<li>Jesse Schell's "Visions of the Gamepocalypse": <a href="http://www.longnow.org/seminars/02010/jul/27/visions-gamepocalypse/">http://www.longnow.org/seminars/02010/jul/27/visions-gamepocalypse/</a></li>
<li><a href="http://geoloqi.com/">http://geoloqi.com/</a></li>
</ul>
links for 2010-08-08
August 9, 2010-
via http://www.imdb.com/title/tt0458352/quotes
<blockquote>
… But what you don't know is that that sweater is not just blue, it's not turquoise. It's not lapis. It's actually cerulean. And you're also blithely unaware of the fact that in 2002, Oscar de la Renta did a collection of cerulean gowns. And then I think it was Yves Saint Laurent… wasn't it who showed cerulean military jackets? I think we need a jacket here. And then cerulean quickly showed up in the collections of eight different designers. And then it, uh, filtered down through the department stores and then trickled on down into some tragic Casual Corner where you, no doubt, fished it out of some clearance bin. However, that blue represents millions of dollars and countless jobs and it's sort of comical how you think that you've made a choice that exempts you from the fashion industry when, in fact, you're wearing the sweater that was selected for you by the people in this room from a pile of stuff.
</blockquote>
Talkabout 