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	<title>Looking Out To Sea</title>
	<link>http://www.dougalstanton.net/blog</link>
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	<lastBuildDate>Fri, 30 Jul 2010 10:07:09 +0000</lastBuildDate>
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		<title>Cyber security teaser challenge</title>
		<description><![CDATA[During the week a friend from work pointed me towards the Cyber Security Challenge, which is being touted as a popular method to promote the field of computer security in the UK.

They had released a teaser challenge as a sample of the main competition which seemed like it was worth trying. It took us a [...]]]></description>
		<link>http://www.dougalstanton.net/blog/index.php/2010/07/30/cyber-security-teaser-challenge/</link>
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		<title>Networking and redundancy (double meanings)</title>
		<description><![CDATA[For the past three and a half years I have been working on router redundancy protocols. When your router (or its upstream connection) dies for some reason you want to minimise the loss on people using the network. Ideally users should never notice loss of connection, though in the real world there will be some [...]]]></description>
		<link>http://www.dougalstanton.net/blog/index.php/2010/07/24/networking-and-redundancy-double-meanings/</link>
			</item>
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		<title>What does your IP address mean?</title>
		<description><![CDATA[The internet protocol (IP) address of my laptop is 192.168.0.3/24. What does this mean?

The first and obvious question is, What&#8217;s an IP address? It&#8217;s an identifier that your computer uses to talk to other computers on the network. It bears a lot of resemblance in form and function to a telephone number. There are prefixes [...]]]></description>
		<link>http://www.dougalstanton.net/blog/index.php/2010/07/23/what-does-your-ip-address-mean/</link>
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		<title>Mex-a-Tron!</title>
		<description><![CDATA[I don&#8217;t know if I ever saw it the first time round, but I saw Tron this evening. Now I&#8217;m fully prepared for the sequel when it appears.

A few friends came over and we got fajitas from Los Cardos across the road &#8212; and despite the utilitarian appearance the food was pretty good. The staff [...]]]></description>
		<link>http://www.dougalstanton.net/blog/index.php/2010/07/08/mex-a-tron/</link>
			</item>
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		<title>New active lifestyle, available in five exciting colours!</title>
		<description><![CDATA[Among the many advantages of no longer having a swollen infected toe is the ability to do sports again. I know, it doesn&#8217;t seem like me, but I have been known to do it in the past.

At the weekend Helen and I went an epic (miniature epic?) walk up the Water of Leith, from Bonnington [...]]]></description>
		<link>http://www.dougalstanton.net/blog/index.php/2010/06/30/new-active-lifestyle-available-in-five-exciting-colours/</link>
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		<title>How filtered-accumulate generalises accumulate</title>
		<description><![CDATA[I posted a couple of days ago about one of the earlier exercises (ex1.33) in SICP. After some discussion with Brent Yorgey on Facebook I had another look at some of the definitions given in the book. Yes, if in doubt, re-read the question! :-)

The issue that needed clarified was whether I could justify treating [...]]]></description>
		<link>http://www.dougalstanton.net/blog/index.php/2010/06/28/how-filtered-accumulate-generalises-accumulate/</link>
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		<title>Does filter-accumulate generalise accumulate?</title>
		<description><![CDATA[My latest interesting thought while doing the exercises in SICP is a bit confusing because the book is suggesting something which seems wrong. In Exercise 1.33, after creating a function accumulate (a kind of fold without lists where the start and end values are specified) it asks:


  You can obtain an even more general [...]]]></description>
		<link>http://www.dougalstanton.net/blog/index.php/2010/06/26/does-filter-accumulate-generalise-accumulate/</link>
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		<title>A simple lab book</title>
		<description><![CDATA[At work I keep all my different tasks in separate screen sessions. Each session has a friendly name which makes sense to me, but also has a variable which captures the bug ID. There are various command line tools I interact with that require the ID so it&#8217;s easier if I set it once and [...]]]></description>
		<link>http://www.dougalstanton.net/blog/index.php/2010/06/22/a-simple-lab-book/</link>
			</item>
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		<title>Initial thoughts on SICP study group</title>
		<description><![CDATA[A few weeks ago I mentioned the idea of a study group at work, for the purpose of reading through some programming-relevant texts and discussing them. We&#8217;ve been working on Structure and Interpretation of Computer Programs (SICP) for a few weeks now. I&#8217;m enjoying it more than I expected. The exercises are mostly within grasp [...]]]></description>
		<link>http://www.dougalstanton.net/blog/index.php/2010/06/19/initial-thoughts-on-sicp-study-group/</link>
			</item>
	<item>
		<title>Four book medley</title>
		<description><![CDATA[I&#8217;ve managed to get a lot of reading done in the past few weeks, so maybe it&#8217;s time to mention a few. Most of these came from the book swap group.


Measuring the Universe by Kitty Ferguson

A kind of history of geometry and cosmology, to answer the question, &#8220;how do we measure things that we can&#8217;t [...]]]></description>
		<link>http://www.dougalstanton.net/blog/index.php/2010/06/12/four-book-medley/</link>
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