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	<title>David Pratten &#187; Posts</title>
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	<link>http://www.davidpratten.com</link>
	<description>Interests, Ideas and Observations</description>
	<lastBuildDate>Fri, 25 Nov 2011 00:14:46 +0000</lastBuildDate>
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		<title>Ambi Functions</title>
		<link>http://www.davidpratten.com/2011/11/25/ambi-function/</link>
		<comments>http://www.davidpratten.com/2011/11/25/ambi-function/#comments</comments>
		<pubDate>Fri, 25 Nov 2011 00:01:42 +0000</pubDate>
		<dc:creator>david</dc:creator>
				<category><![CDATA[Posts]]></category>

		<guid isPermaLink="false">http://www.davidpratten.com/?p=424</guid>
		<description><![CDATA[Here are a couple of short examples of ambi functions. These may be copied and pasted into the Ambi Calculator. The first is a recursive implementation of Euclid&#8217;s algorithm for finding the Greatest Common Divisor: &#160; function; gcd; // A B gcd ; // Euclid's algorithm ; ifelse ; import $b = import $a = $b 0 == ; $a export; $b $a $b % gcd export ; pass; &#160; The second is an iterative function to check if a number is prime. &#160; function ; isprime ; // N isprime ; // returns boolean; for ; import $n = true $isprime = 2 $i =; $isprime $i $n sqrt &#60;= and ; $i ++ ; $n $i % 0 != $isprime = ; $isprime export;]]></description>
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		<slash:comments>0</slash:comments>
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		<title>Ambi RPN Calculator Update and Chrome Extension</title>
		<link>http://www.davidpratten.com/2011/11/25/ambi-0-6-0/</link>
		<comments>http://www.davidpratten.com/2011/11/25/ambi-0-6-0/#comments</comments>
		<pubDate>Thu, 24 Nov 2011 21:36:14 +0000</pubDate>
		<dc:creator>david</dc:creator>
				<category><![CDATA[Posts]]></category>
		<category><![CDATA[Ambi]]></category>
		<category><![CDATA[ambi programming language]]></category>
		<category><![CDATA[ambi rpn calculator]]></category>

		<guid isPermaLink="false">http://www.davidpratten.com/?p=381</guid>
		<description><![CDATA[I have updated and released a new version of the Ambi RPN Calculator and programming language. Version 0.6.0 includes the following improvements &#8230; Complete redesign of UI using browser local storage to preserve state across invocations. Added &#8216;My Ambi Functions&#8217; which are persistent. UI now auto recalculates as the expression is edited. drop, pow, exp, and inv operators Added extensive error reporting. Added a Virtual Keyboard 9 short lessons on how to use ambi Check it out  Also, Ambi is now available in the Chrome Store.  There are two versions.  A full screen app and a popup extension. David]]></description>
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		<slash:comments>0</slash:comments>
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		<item>
		<title>Finding &#8220;my place&#8221; in Australia</title>
		<link>http://www.davidpratten.com/2011/10/27/finding-my-place-in-australia/</link>
		<comments>http://www.davidpratten.com/2011/10/27/finding-my-place-in-australia/#comments</comments>
		<pubDate>Wed, 26 Oct 2011 22:35:21 +0000</pubDate>
		<dc:creator>david</dc:creator>
				<category><![CDATA[Posts]]></category>

		<guid isPermaLink="false">http://www.davidpratten.com/?p=420</guid>
		<description><![CDATA[It has been almost eighteen months since posting to this blog and two years since I returned to Australia with my family in late December 2009. I joined Wesley Mission as a Project Manager and Business Analyst in May 2010.  Project managing an upgrade of  core business systems in Wesley Mission&#8217;s hospitals at Ashfield and Kogarah continues to stimulate and challenge with many opportunities to learn and develop new skills.]]></description>
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		<slash:comments>0</slash:comments>
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		<item>
		<title>Australian Radio Streaming URLs</title>
		<link>http://www.davidpratten.com/2010/05/18/australian-radio-streaming-urls/</link>
		<comments>http://www.davidpratten.com/2010/05/18/australian-radio-streaming-urls/#comments</comments>
		<pubDate>Tue, 18 May 2010 00:48:40 +0000</pubDate>
		<dc:creator>david</dc:creator>
				<category><![CDATA[Posts]]></category>
		<category><![CDATA[Information]]></category>
		<category><![CDATA[radio]]></category>

		<guid isPermaLink="false">http://www.davidpratten.com/?p=361</guid>
		<description><![CDATA[I have just started using the Chrome Radio Player and search as I may, I was unable to find a single source for the streaming urls of Australian radio stations. I have found them and here is the result of my research. You can plug these URLs into your streaming player. &#8212; Enjoy]]></description>
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		<title>Visual metaphors assist busy readers, learners</title>
		<link>http://www.davidpratten.com/2010/04/26/visual-metaphors-assist-busy-readers-learners/</link>
		<comments>http://www.davidpratten.com/2010/04/26/visual-metaphors-assist-busy-readers-learners/#comments</comments>
		<pubDate>Mon, 26 Apr 2010 04:09:33 +0000</pubDate>
		<dc:creator>david</dc:creator>
				<category><![CDATA[Posts]]></category>
		<category><![CDATA[informtaion]]></category>

		<guid isPermaLink="false">http://www.davidpratten.com/?p=351</guid>
		<description><![CDATA[See this in the news: Probono Austrlalia Apr-24 Non-profit Forum May-02 Announcing the availability of the first implementation of the Knowledge Ferret open source project. The knowledgeferret.com adds a compelling visual metaphor to the document reader to help busy readers to make sense of large and complicated documents. The Productivity Commissions recent report into the Not-For-Profit sector in Australia is being used as a test of this technology. The &#8220;Knowledge Ferret&#8221; is David&#8217;s third exploration of adding visual metaphor to large documents. The first was the Visual PMBOK(r) Guide &#8211; jospar.com and the second earlier work was for NSW Health&#8217;s Protocols and Procedures for Aged Care Assessment In the &#8220;Knowledge Ferret&#8221; the visual metaphor is formed by the index on the left hand side of the document. It shows the topic that is currently in focus and the context of this topic. While the user can&#8217;t ever see all the topics in a document at one time, if ever a topic is visible, it is always in the same place in relation to all other topics. This means that as the user interacts and explores the document they are simultaneously building a mental map of the whole document. While a [...]]]></description>
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		<title>Golf Zero</title>
		<link>http://www.davidpratten.com/2010/03/20/golf-zero/</link>
		<comments>http://www.davidpratten.com/2010/03/20/golf-zero/#comments</comments>
		<pubDate>Sat, 20 Mar 2010 09:49:24 +0000</pubDate>
		<dc:creator>david</dc:creator>
				<category><![CDATA[Posts]]></category>
		<category><![CDATA[golf]]></category>
		<category><![CDATA[Ideas]]></category>

		<guid isPermaLink="false">http://www.davidpratten.com/?p=343</guid>
		<description><![CDATA[Some keen golfers face a time when they can enjoy a walk around a golf course, but are not able to swing a golf club like they used to. A golfer&#8217;s swing could be interrupted due to injury, sickness or due to natural aging processes. Should an inability to swing stop a golfer from enjoying the course? No. &#8220;Golf Zero&#8221; could be an answer. Here is an idea. Let &#8220;Golf Zero&#8221; be a zero swing game of golf that uses a small compressed air powered cannon to fire a golf ball when on the fairway, and a curved pipe for putting. The fairway cannon fits onto a golf buggy in place of a bag of golf clubs and the Golf Zero golfer controls it using a wirelessly linked iPhone App that includes the course layout. The golfer chooses which stick to emulate, either an iron or wood plus a variable swing. On the putting green, the golfer drops a golf ball down a curved pipe that is pointed towards the flag. The combination of a small air powered cannon on the fairway and a curved pipe on the green may provide a way for golfers who have lost their swing [...]]]></description>
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		<item>
		<title>Lifetime Postal Address</title>
		<link>http://www.davidpratten.com/2010/02/16/lifetime-postal-address/</link>
		<comments>http://www.davidpratten.com/2010/02/16/lifetime-postal-address/#comments</comments>
		<pubDate>Mon, 15 Feb 2010 21:50:54 +0000</pubDate>
		<dc:creator>david</dc:creator>
				<category><![CDATA[Posts]]></category>

		<guid isPermaLink="false">http://www.davidpratten.com/?p=284</guid>
		<description><![CDATA[I would like a Lifetime Postal Address (LPA) that I could give to the 50+ organisations that send me items in the post. I would be happy to pay Australia Post $100 per year for the opportunity to never have to change my postal address &#8211; ever. Given the mobility of the Australian popupation, this is a marketing opportunity for Australia Post. Australian PO Box holders can get a similar service today by a/ renting a PO Box and then b/ paying for redirection. The LPA simplifies and streamlines the service. Here is a few more details on how this could work. Subscribers update their actual delivery addresses, as often as necessary, at a secure website run by Australia Post LPA&#8217;s are globally unique LPA&#8217;s could be formed like airline booking references 6 alphanumeric digits. The last character in an LPA is a check-character that ensures that different LPAs always differ by more than one character If a LPA subscriber let their subscription lapse, then their mail is &#8220;Returned to Sender LPA not active&#8221; Once allocated, LPA&#8217;s are only returned to the available pool 20 years after they have lapsed. LPA subscribers could be offered discounts on bundled PO Box [...]]]></description>
		<wfw:commentRss>http://www.davidpratten.com/2010/02/16/lifetime-postal-address/feed/</wfw:commentRss>
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		<title>Working Commute by Rail</title>
		<link>http://www.davidpratten.com/2010/02/15/working-commute-by-rail/</link>
		<comments>http://www.davidpratten.com/2010/02/15/working-commute-by-rail/#comments</comments>
		<pubDate>Sun, 14 Feb 2010 20:52:25 +0000</pubDate>
		<dc:creator>david</dc:creator>
				<category><![CDATA[Posts]]></category>
		<category><![CDATA[working commute]]></category>

		<guid isPermaLink="false">http://www.davidpratten.com/?p=260</guid>
		<description><![CDATA[I visited Thirlmere yesterday &#8211; the centre of Steam Engines in NSW. I didn&#8217;t get to ride on any of the engines, but did meet half a dozen people who commute daily to the Sydney CBD to work. This is a two hour commute &#8211; in both directions. One person leaves home at 5:30am each day to be at work on time! Four hours a day commuting? Is there a way of integrating the commute time into the working day? For many commuters the rail journey is for relaxation, reflection, study and sleep because it is on top of a regular work day. However a different pattern is possible, one that decreases the length of the work back towards 8 to 9 hours. How about a &#8220;hot desking&#8221; rail service that runs from the fringes of Sydney arriving in the city at 8am, 10am and midday and then a return service leaving at 1pm, 3pm, and 5pm? Staff clock on when then join the train, work for up to two hours on the journey in, spend four to five hours in the city office for face to face interactions, and then work up to a further two hours on the [...]]]></description>
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		<title>Use less fuel in city driving</title>
		<link>http://www.davidpratten.com/2009/12/09/use-less-fuel-in-city-driving/</link>
		<comments>http://www.davidpratten.com/2009/12/09/use-less-fuel-in-city-driving/#comments</comments>
		<pubDate>Wed, 09 Dec 2009 06:54:46 +0000</pubDate>
		<dc:creator>david</dc:creator>
				<category><![CDATA[Posts]]></category>
		<category><![CDATA[Green Motoring]]></category>

		<guid isPermaLink="false">http://www.davidpratten.com/?p=251</guid>
		<description><![CDATA[Given that expecting motorists to manually start and stop their cars at traffic lights is impractical and unlikely to be widely adopted &#8230; How can we stop our cars burning petrol while waiting for a traffic light to go green crawling in city traffic at less than 10km/h Solution Fit cars with a controller that will automatically stop the engine when travelling at less than 10km/h and start it again when either the car is accelerating through 10km/h or when the battery power is about to be exhausted. Fit cars with batteries and electric motors that will start the car moving and drive the car up to 10km/h. Assume the cars have an automatic transmission and front wheel drive. How it would work Waiting at a traffic light, the engine has been automatically switched off. When the light goes green and the accelerator pedal is pressed, the electric motors move the car forward while the engine is started. Once the engine is running, it takes over accelerating the car past 10km/h. Pluses The batteries and motors can be much smaller than those required for fully hybrid drive. Cars could be retrofitted with this technology. A small battery pack in the [...]]]></description>
		<wfw:commentRss>http://www.davidpratten.com/2009/12/09/use-less-fuel-in-city-driving/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
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		<item>
		<title>CSS Properties (on one page)</title>
		<link>http://www.davidpratten.com/2009/07/12/css-properties-on-one-page/</link>
		<comments>http://www.davidpratten.com/2009/07/12/css-properties-on-one-page/#comments</comments>
		<pubDate>Sun, 12 Jul 2009 03:24:24 +0000</pubDate>
		<dc:creator>david</dc:creator>
				<category><![CDATA[Posts]]></category>
		<category><![CDATA[(On One Page)]]></category>

		<guid isPermaLink="false">http://www.davidpratten.com/2009/07/12/css-propertis-on-one-page/</guid>
		<description><![CDATA[Check out this persuasive demonstration of CSS properties using the (On on Page) information design pattern:&#160; CSS Sandbox]]></description>
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