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<channel>
	<title>PKILL.info &#187; Blog</title>
	<atom:link href="http://pkill.info/b/tag/blog/feed/" rel="self" type="application/rss+xml" />
	<link>http://pkill.info/b</link>
	<description>Tutorials and tips</description>
	<lastBuildDate>Wed, 08 Sep 2010 06:08:32 +0000</lastBuildDate>
	<language>en</language>
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		<item>
		<title>Information for Living and Travelling in Hong Kong</title>
		<link>http://pkill.info/b/2439/information-for-living-and-travelling-in-hong-kong/</link>
		<comments>http://pkill.info/b/2439/information-for-living-and-travelling-in-hong-kong/#comments</comments>
		<pubDate>Sun, 29 Aug 2010 06:22:33 +0000</pubDate>
		<dc:creator>Zhiqiang Ma</dc:creator>
				<category><![CDATA[Blog]]></category>
		<category><![CDATA[Hong Kong]]></category>
		<category><![CDATA[life]]></category>

		<guid isPermaLink="false">http://pkill.info/b/?p=2439</guid>
		<description><![CDATA[This is a collection of useful online information for living and travelling in Hong Kong. This collection is kept updating by adding more links into it. Map Hong Kong map: CentaMap Public transportation The train roadmap: MTR journey planner. A PDF version. Road search and road info: Public Transport Enquiry Service. Snapshots and live webcast [...]

<b>Read more:</b><ul><li><a href='http://pkill.info/b/1567/calling-three-hong-kongs-customer-service/' rel='bookmark' title='Permanent Link: Calling Three Hong Kong’s Customer Service'>Calling Three Hong Kong’s Customer Service</a></li>
<li><a href='http://pkill.info/b/1341/this-blog-passes-w3c-xhtml-1-0-transitional-validation/' rel='bookmark' title='Permanent Link: This blog passes W3C XHTML 1.0 Transitional Validation'>This blog passes W3C XHTML 1.0 Transitional Validation</a></li>
<li><a href='http://pkill.info/b/420/new-blog-address-httpblog-zhiqiangma-info/' rel='bookmark' title='Permanent Link: New blog address'>New blog address</a></li>
</ul>]]></description>
			<content:encoded><![CDATA[<p>This is a collection of useful online information for living and travelling in Hong Kong. This collection is kept updating by adding more links into it.</p>
<h3>Map</h3>
<p>Hong Kong map: <a href="http://hk.centamap.com/gc/home.aspx">CentaMap</a></p>
<h3>Public transportation</h3>
<p>The train roadmap:<a href="http://www.mtr.com.hk/jplanner/eng/planner_index.php"> MTR journey planner</a>. A <a href="http://www.mtr.com.hk/jplanner/images/maps/routemap.pdf">PDF version</a>.</p>
<p>Road search and road info: <a href="http://ptes.td.gov.hk/">Public Transport Enquiry Service.</a></p>
<p>Snapshots and live webcast of transportation condition from <a href="http://traffic.td.gov.hk/">GovHK</a>.</p>
<p>Public transportation in Hong Kong from <a href="http://www.gov.hk/en/residents/transport/publictransport/#/en/residents/transport/publictransport/">GovHK</a>.</p>
<h3>Weather</h3>
<p>Current weather and 7-day weather forecast: <a href="http://www.hko.gov.hk/contente.htm#">Hong Kong Observatory</a>.</p>
<h3>Beach</h3>
<p>Beach water quality from <a href="http://www.epd.gov.hk/epd/english/environmentinhk/water/beach_quality/bwq_current.html">EPD</a>.</p>
<h3>Dinning</h3>
<p>Hong Kong restaurants guide: <a href="http://www.openrice.com/english">OpenRice</a>.</p>
<p>Dim Sum menu with Cantonese pronunciation and names in Chinese and English: <a href="http://www.discoverhongkong.com/eng/jsp/dimsum/dimsum-guide-index.jsp">Dim Sum guide</a>.</p>
<h3>Movie and cinema</h3>
<p>Hong Kong file guide: <a href="http://wmoov.com/">wmoov</a></p>
<h3>Travel guide</h3>
<p>Official travel guide from the Hong Kong Tourism Board: <a href="http://www.discoverhongkong.com/eng/index.html">Discover Hong Kong</a>.</p>
<p><a href="http://www.geopark.gov.hk/en_index.html">Hong Kong National Geopark.</a></p>
<p><a href="http://www.thepeak.com.hk/en/home.asp">The Peak.</a></p>
<p><a href="http://www.discoverhongkong.com/eng/attractions/victoria-harbour.html" target="_self">Victoria Harbour.</a></p>


<b>Read more:</b><ul><li><a href='http://pkill.info/b/1567/calling-three-hong-kongs-customer-service/' rel='bookmark' title='Permanent Link: Calling Three Hong Kong’s Customer Service'>Calling Three Hong Kong’s Customer Service</a></li>
<li><a href='http://pkill.info/b/1341/this-blog-passes-w3c-xhtml-1-0-transitional-validation/' rel='bookmark' title='Permanent Link: This blog passes W3C XHTML 1.0 Transitional Validation'>This blog passes W3C XHTML 1.0 Transitional Validation</a></li>
<li><a href='http://pkill.info/b/420/new-blog-address-httpblog-zhiqiangma-info/' rel='bookmark' title='Permanent Link: New blog address'>New blog address</a></li>
</ul>]]></content:encoded>
			<wfw:commentRss>http://pkill.info/b/2439/information-for-living-and-travelling-in-hong-kong/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Calling Three Hong Kong’s Customer Service</title>
		<link>http://pkill.info/b/1567/calling-three-hong-kongs-customer-service/</link>
		<comments>http://pkill.info/b/1567/calling-three-hong-kongs-customer-service/#comments</comments>
		<pubDate>Mon, 12 Apr 2010 12:09:18 +0000</pubDate>
		<dc:creator>Zhiqiang Ma</dc:creator>
				<category><![CDATA[Blog]]></category>
		<category><![CDATA[Hong Kong]]></category>
		<category><![CDATA[life]]></category>

		<guid isPermaLink="false">http://zhiqiangma.info/?p=1567</guid>
		<description><![CDATA[3&#8242;s hot line number for 3G service is 31623333. 8 in the main menu is the default key to connect to the customer service manager, but I always get &#8220;Sorry, there is error in you input, please input again.&#8221; After some tries, I find out the quick way to the customer service: Main menu -&#62; [...]

<b>Read more:</b><ul><li><a href='http://pkill.info/b/2439/information-for-living-and-travelling-in-hong-kong/' rel='bookmark' title='Permanent Link: Information for Living and Travelling in Hong Kong'>Information for Living and Travelling in Hong Kong</a></li>
<li><a href='http://pkill.info/b/1341/this-blog-passes-w3c-xhtml-1-0-transitional-validation/' rel='bookmark' title='Permanent Link: This blog passes W3C XHTML 1.0 Transitional Validation'>This blog passes W3C XHTML 1.0 Transitional Validation</a></li>
<li><a href='http://pkill.info/b/420/new-blog-address-httpblog-zhiqiangma-info/' rel='bookmark' title='Permanent Link: New blog address'>New blog address</a></li>
</ul>]]></description>
			<content:encoded><![CDATA[<p>3&#8242;s hot line number for 3G service is 31623333. 8 in the main menu is the default key to connect to the customer service manager, but I always get &#8220;Sorry, there is error in you input, please input again.&#8221; After some tries, I find out the quick way to the customer service:</p>
<p><strong><em>Main menu -&gt; </em></strong></p>
<p><strong><em>Press6 (Shop addresses, etc service.) -&gt; </em></strong></p>
<p><strong><em>Press 3 (Services application.) -&gt; </em></strong></p>
<p><strong><em>Press 5 (The other services application.)</em></strong></p>
<p>You will get the message &#8220;Please wait for a while, our customer service manager will answer your call&#8230;&#8221;. Wait for a while and then you will get serviced :)</p>


<b>Read more:</b><ul><li><a href='http://pkill.info/b/2439/information-for-living-and-travelling-in-hong-kong/' rel='bookmark' title='Permanent Link: Information for Living and Travelling in Hong Kong'>Information for Living and Travelling in Hong Kong</a></li>
<li><a href='http://pkill.info/b/1341/this-blog-passes-w3c-xhtml-1-0-transitional-validation/' rel='bookmark' title='Permanent Link: This blog passes W3C XHTML 1.0 Transitional Validation'>This blog passes W3C XHTML 1.0 Transitional Validation</a></li>
<li><a href='http://pkill.info/b/420/new-blog-address-httpblog-zhiqiangma-info/' rel='bookmark' title='Permanent Link: New blog address'>New blog address</a></li>
</ul>]]></content:encoded>
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		<slash:comments>3</slash:comments>
		</item>
		<item>
		<title>This blog passes W3C XHTML 1.0 Transitional Validation</title>
		<link>http://pkill.info/b/1341/this-blog-passes-w3c-xhtml-1-0-transitional-validation/</link>
		<comments>http://pkill.info/b/1341/this-blog-passes-w3c-xhtml-1-0-transitional-validation/#comments</comments>
		<pubDate>Fri, 05 Mar 2010 01:47:07 +0000</pubDate>
		<dc:creator>Zhiqiang Ma</dc:creator>
				<category><![CDATA[Blog]]></category>
		<category><![CDATA[xhtml]]></category>

		<guid isPermaLink="false">http://zhiqiangma.info/?p=1341</guid>
		<description><![CDATA[I have made this blog pass the W3C XHTML 1.0 transitional validation! I changed the theme code and made sure the theme have pass it. I also test the homepage and most of the links that can find on the homepage. Some of the post may not pass the validation because of the post content. [...]

<b>Read more:</b><ul><li><a href='http://pkill.info/b/420/new-blog-address-httpblog-zhiqiangma-info/' rel='bookmark' title='Permanent Link: New blog address'>New blog address</a></li>
<li><a href='http://pkill.info/b/566/a-free-personal-wordpress-blog-solution/' rel='bookmark' title='Permanent Link: A free personal wordpress blog solution'>A free personal wordpress blog solution</a></li>
<li><a href='http://pkill.info/b/164/%e6%8b%bf%e5%88%b0%e6%af%95%e4%b8%9a%e8%af%81%e5%95%a6/' rel='bookmark' title='Permanent Link: 拿到毕业证啦'>拿到毕业证啦</a></li>
</ul>]]></description>
			<content:encoded><![CDATA[<p>I have made this blog pass the W3C XHTML 1.0 transitional validation! I changed the theme code and made sure the theme have pass it. I also test the homepage and most of the links that can find on the homepage. Some of the post may not pass the validation because of the post content. If you find some post that can not pass it, please kindly notify me by comments or email :) .</p>
<p>Cheers!</p>
<p><!-- XHTML pass --></p>
<p><a href="http://validator.w3.org/check?uri=referer"><img src="http://www.w3.org/Icons/valid-xhtml10-blue.png" alt="Valid XHTML 1.0 Transitional" width="88" height="31" /></a></p>
<p><!-- End XHTML pass --></p>
<p><!-- CSS3 pass --></p>
<p>CSS level 3 validation is also passed after changing the CSS file of the theme and the plugins.<a href="http://jigsaw.w3.org/css-validator/validator?uri=http%3A%2F%2Fzhiqiangma.info&amp;profile=css3&amp;usermedium=all&amp;warning=0"><br />
<img style="border: 0pt none; width: 88px; height: 31px;" src="http://jigsaw.w3.org/css-validator/images/vcss-blue" alt="Valid CSS!" /><br />
</a></p>
<p><!-- End CSS3 pass --></p>
<p><span style="font-size: x-small;">Updated on 5 Mar. 2010. CSS3 validation passed.</span></p>


<b>Read more:</b><ul><li><a href='http://pkill.info/b/420/new-blog-address-httpblog-zhiqiangma-info/' rel='bookmark' title='Permanent Link: New blog address'>New blog address</a></li>
<li><a href='http://pkill.info/b/566/a-free-personal-wordpress-blog-solution/' rel='bookmark' title='Permanent Link: A free personal wordpress blog solution'>A free personal wordpress blog solution</a></li>
<li><a href='http://pkill.info/b/164/%e6%8b%bf%e5%88%b0%e6%af%95%e4%b8%9a%e8%af%81%e5%95%a6/' rel='bookmark' title='Permanent Link: 拿到毕业证啦'>拿到毕业证啦</a></li>
</ul>]]></content:encoded>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>A free personal wordpress blog solution</title>
		<link>http://pkill.info/b/566/a-free-personal-wordpress-blog-solution/</link>
		<comments>http://pkill.info/b/566/a-free-personal-wordpress-blog-solution/#comments</comments>
		<pubDate>Fri, 15 Jan 2010 08:06:48 +0000</pubDate>
		<dc:creator>Zhiqiang Ma</dc:creator>
				<category><![CDATA[Blog]]></category>
		<category><![CDATA[wordpress]]></category>

		<guid isPermaLink="false">http://zhiqiangma.info/a-free-personal-wordpress-blog-solution/</guid>
		<description><![CDATA[If you want to have a wordpress blog for FREE co.cc + x10hosting is the best choice. I will introduce both in this post. I will briefly introduce how to set up a wordpress blog like my blog (pkill.info). The overall that I paid for this blog is only $0.89. I can say that it [...]

<b>Read more:</b><ul><li><a href='http://pkill.info/b/420/new-blog-address-httpblog-zhiqiangma-info/' rel='bookmark' title='Permanent Link: New blog address'>New blog address</a></li>
<li><a href='http://pkill.info/b/1341/this-blog-passes-w3c-xhtml-1-0-transitional-validation/' rel='bookmark' title='Permanent Link: This blog passes W3C XHTML 1.0 Transitional Validation'>This blog passes W3C XHTML 1.0 Transitional Validation</a></li>
<li><a href='http://pkill.info/b/590/the-wordpress-desktop-client-lekhonee/' rel='bookmark' title='Permanent Link: The wordpress desktop client &#8211; lekhonee'>The wordpress desktop client &#8211; lekhonee</a></li>
</ul>]]></description>
			<content:encoded><![CDATA[<p>If you want to have a wordpress blog for FREE co.cc + x10hosting is the best choice. I will introduce both in this post.</p>
<p>I will briefly introduce how to set up a wordpress blog like my blog (<a href="http://pkill.info">pkill.info</a>). The overall that I paid for this blog is only $0.89. I can say that it is nearly free. And the 5G traffic is enough for my blog. There are many free blog service providers such as wordpress.com and blogger. But I prefer to set up it by myself because I can control the domain name, the program and the content of my site and I can bakup the site very easily.</p>
<p>1. Domain registration:</p>
<p>Ff you do not want to pay for the domain you can also get a CO.CC domain for FREE from <a href="http://g.pkill.info/cocc">www.co.cc (aff)</a>. You will have full dns or forwarding control of the co.cc domain you have. Dns server, CNAME, MX record, forwarding are all available. They provides an easy configuration choice for google application.</p>
<p>I register my domain at the low price of $0.89 from <a href="http://g.pkill.info/godaddy">GoDaddy.com (aff)</a>. .info domain is very cheap for registration. And the annual renew fee is $7.9. If the .com domain is more convenient, you can register one at the price about $10/year.</p>
<p>2. Hosting service:</p>
<p>I am now using <a href="http://g.pkill.info/hostso">hostso (aff)</a>&#8216;s HK$48/y plan. I decide to pay for a good hosting service to host my blog. With a hosting service that I pay I can get a better service.</p>
<p>If a free hosting service is needed, I still give my recommendations:</p>
<p>When considering the free hosting service, I have several rules:<br />
* It should have some way for earning money. I don&#8217;t like to see that my site disappear because the site runs out of their money.<br />
* It should provides PHP + MySQL solution. I mainly using WordPress.<br />
* It should allow ad-free. I don&#8217;t like to have a big banner on top or at the bottom of my site.<br />
* It should have a good availability rate and performance.<br />
* It will be better if my friends in China can also browse the site on there servers.</p>
<p>x10Hosting.com is the best free hosting service I have ever found. My blog is running on their servers now. Their service can fulfil all my requirements listed above ;) . They provides 500MB disk space 10G bandwidth and 3 MySQL database, which is far enough for my personal blog. They provides .htaccess support and FTP account. And what&#8217;s best is that my friends in China can also browse my blog directly now. Their control panel and web design are much professional, I like it very much. Compared to the other free hosting service, I highly recommend x10hosting.</p>
<p>Before x10hosting, I used the free hosting plan of freehostia.com. I don&#8217;t recommend the service of 000webhost.com now even they offer a &#8220;1500 MB Disk Space, 100 GB Data Transfer&#8221; plan at the price of $0.00. I like the 000webhost&#8217;s service plan and the user interface better. But it seems they don&#8217;t accept new application now. I thought I wouldn&#8217;t spend time on transferring my site because their free 5G traffic plan is enough for me. If more disk space or traffic is needed for your site, you can consider the paid service plan. But the x10hosting&#8217;s service is good enough for persuading me to transfer ;)</p>
<p>So, with overall fee of $0.89, I get a personal blog. And I thank the guys that make wordpress and it&#8217;s useful plugins available to us for free! WordPress is my favourite blog. I can choose any theme that I like and the most beautiful thing is that there are all kinds of plugins ready for using!</p>
<p>The theme and plugins I am using are:<br />
Theme: iBlog2 (A MacOS X style theme)<br />
Plugins: Akismet (Anti spam), All in One SEO Pack (SEO plugin), KB Robots.txt (Edit robots.txt file), Sociable (Add share and enjoy), WP Super Cache (Save CPU usage of the server), Yet Another Related Posts Plugin (Recommend related posts).</p>


<b>Read more:</b><ul><li><a href='http://pkill.info/b/420/new-blog-address-httpblog-zhiqiangma-info/' rel='bookmark' title='Permanent Link: New blog address'>New blog address</a></li>
<li><a href='http://pkill.info/b/1341/this-blog-passes-w3c-xhtml-1-0-transitional-validation/' rel='bookmark' title='Permanent Link: This blog passes W3C XHTML 1.0 Transitional Validation'>This blog passes W3C XHTML 1.0 Transitional Validation</a></li>
<li><a href='http://pkill.info/b/590/the-wordpress-desktop-client-lekhonee/' rel='bookmark' title='Permanent Link: The wordpress desktop client &#8211; lekhonee'>The wordpress desktop client &#8211; lekhonee</a></li>
</ul>]]></content:encoded>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>New blog address</title>
		<link>http://pkill.info/b/420/new-blog-address-httpblog-zhiqiangma-info/</link>
		<comments>http://pkill.info/b/420/new-blog-address-httpblog-zhiqiangma-info/#comments</comments>
		<pubDate>Fri, 01 Jan 2010 05:08:16 +0000</pubDate>
		<dc:creator>Zhiqiang Ma</dc:creator>
				<category><![CDATA[Blog]]></category>

		<guid isPermaLink="false">http://zhiqiangma.info/new-blog-address-httpblog-zhiqiangma-info/</guid>
		<description><![CDATA[All my blog post are moved to http://zhiqiangma.info from Jan. 22 2010. Cheers! The latest address is http://pkill.info Read more:This blog passes W3C XHTML 1.0 Transitional Validation A free personal wordpress blog solution 拿到毕业证啦

<b>Read more:</b><ul><li><a href='http://pkill.info/b/1341/this-blog-passes-w3c-xhtml-1-0-transitional-validation/' rel='bookmark' title='Permanent Link: This blog passes W3C XHTML 1.0 Transitional Validation'>This blog passes W3C XHTML 1.0 Transitional Validation</a></li>
<li><a href='http://pkill.info/b/566/a-free-personal-wordpress-blog-solution/' rel='bookmark' title='Permanent Link: A free personal wordpress blog solution'>A free personal wordpress blog solution</a></li>
<li><a href='http://pkill.info/b/164/%e6%8b%bf%e5%88%b0%e6%af%95%e4%b8%9a%e8%af%81%e5%95%a6/' rel='bookmark' title='Permanent Link: 拿到毕业证啦'>拿到毕业证啦</a></li>
</ul>]]></description>
			<content:encoded><![CDATA[<p>All my blog post are moved to http://zhiqiangma.info from Jan. 22 2010. Cheers!</p>
<p>The latest address is http://pkill.info</p>


<b>Read more:</b><ul><li><a href='http://pkill.info/b/1341/this-blog-passes-w3c-xhtml-1-0-transitional-validation/' rel='bookmark' title='Permanent Link: This blog passes W3C XHTML 1.0 Transitional Validation'>This blog passes W3C XHTML 1.0 Transitional Validation</a></li>
<li><a href='http://pkill.info/b/566/a-free-personal-wordpress-blog-solution/' rel='bookmark' title='Permanent Link: A free personal wordpress blog solution'>A free personal wordpress blog solution</a></li>
<li><a href='http://pkill.info/b/164/%e6%8b%bf%e5%88%b0%e6%af%95%e4%b8%9a%e8%af%81%e5%95%a6/' rel='bookmark' title='Permanent Link: 拿到毕业证啦'>拿到毕业证啦</a></li>
</ul>]]></content:encoded>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>拿到毕业证啦</title>
		<link>http://pkill.info/b/164/%e6%8b%bf%e5%88%b0%e6%af%95%e4%b8%9a%e8%af%81%e5%95%a6/</link>
		<comments>http://pkill.info/b/164/%e6%8b%bf%e5%88%b0%e6%af%95%e4%b8%9a%e8%af%81%e5%95%a6/#comments</comments>
		<pubDate>Fri, 03 Jul 2009 08:12:33 +0000</pubDate>
		<dc:creator>Zhiqiang Ma</dc:creator>
				<category><![CDATA[Blog]]></category>

		<guid isPermaLink="false">http://zhiqiangma.info/%e6%8b%bf%e5%88%b0%e6%af%95%e4%b8%9a%e8%af%81%e5%95%a6/</guid>
		<description><![CDATA[终于可以毕业啦！ Read more:This blog passes W3C XHTML 1.0 Transitional Validation A free personal wordpress blog solution New blog address

<b>Read more:</b><ul><li><a href='http://pkill.info/b/1341/this-blog-passes-w3c-xhtml-1-0-transitional-validation/' rel='bookmark' title='Permanent Link: This blog passes W3C XHTML 1.0 Transitional Validation'>This blog passes W3C XHTML 1.0 Transitional Validation</a></li>
<li><a href='http://pkill.info/b/566/a-free-personal-wordpress-blog-solution/' rel='bookmark' title='Permanent Link: A free personal wordpress blog solution'>A free personal wordpress blog solution</a></li>
<li><a href='http://pkill.info/b/420/new-blog-address-httpblog-zhiqiangma-info/' rel='bookmark' title='Permanent Link: New blog address'>New blog address</a></li>
</ul>]]></description>
			<content:encoded><![CDATA[<p>终于可以毕业啦！</p>
<p><embed type="application/x-shockwave-flash" src="http://picasaweb.google.com/s/c/bin/slideshow.swf" width="400" height="267" flashvars="host=picasaweb.google.com&#038;hl=en_US&#038;feat=flashalbum&#038;RGB=0x000000&#038;feed=http%3A%2F%2Fpicasaweb.google.com%2Fdata%2Ffeed%2Fapi%2Fuser%2Feric.zq.ma%2Falbumid%2F5352810482418473137%3Falt%3Drss%26kind%3Dphoto%26hl%3Den_US" pluginspage="http://www.macromedia.com/go/getflashplayer"></embed></p>


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		<title>计算足球中五边形和六边形的个数</title>
		<link>http://pkill.info/b/162/%e8%ae%a1%e7%ae%97%e8%b6%b3%e7%90%83%e4%b8%ad%e4%ba%94%e8%be%b9%e5%bd%a2%e5%92%8c%e5%85%ad%e8%be%b9%e5%bd%a2%e7%9a%84%e4%b8%aa%e6%95%b0/</link>
		<comments>http://pkill.info/b/162/%e8%ae%a1%e7%ae%97%e8%b6%b3%e7%90%83%e4%b8%ad%e4%ba%94%e8%be%b9%e5%bd%a2%e5%92%8c%e5%85%ad%e8%be%b9%e5%bd%a2%e7%9a%84%e4%b8%aa%e6%95%b0/#comments</comments>
		<pubDate>Mon, 15 Jun 2009 13:29:53 +0000</pubDate>
		<dc:creator>Zhiqiang Ma</dc:creator>
				<category><![CDATA[Blog]]></category>
		<category><![CDATA[fun]]></category>
		<category><![CDATA[math]]></category>

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		<description><![CDATA[今天有人问起我足球中黑皮和白皮的数目，研究了下还是个挺有意思的问题，方法使用立体几何里的一个结论就可以了，再使用计数方法就可以计算出来。这里计算中使用的足球是最平常的足球样式。 计算方法如下： 每块黑皮或白皮看作是一个面。从上图中我们可以足球中每个五边形周围有5个六边形，每个六边形周围有3个五边形和3个六边形。 假设有x个五角边，y个六边形，一共有E条边，V个顶点。 每条边有一个五边形和一个六边形共用，有： E = ( 5x + 6y ) / 2 另外，所有边都是六边形的一条边，每个六边形有3条边是自己和一个五边形所有，另外3条与另一个六边形共用，有： E = 3y + 3y / 2 每个顶点有1个五边形和2个六边形共有，有： V = ( 5x + 6y ) / 3 使用欧拉公式，有： V + ( x + y ) &#8211; E = 2 联立以上4个方程，可以解得： x = 12, y = 20 就是说足球中有12块黑皮，20块白皮。 Read more:只用圆规作出两点的中点 This [...]

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			<content:encoded><![CDATA[<p>今天有人问起我足球中黑皮和白皮的数目，研究了下还是个挺有意思的问题，方法使用立体几何里的一个结论就可以了，再使用计数方法就可以计算出来。这里计算中使用的足球是最平常的足球样式。</p>
<p><a href="http://picasaweb.google.com/lh/photo/hHg2F8kVEaiKs5OxTO3BMg?feat=embedwebsite"><img src="http://lh4.ggpht.com/_9GCSB4c6Upw/SjY9VzHqJLI/AAAAAAAAAPw/yMDBRhyWUXE/s288/football.jpeg" alt="" /></a></p>
<p>计算方法如下：</p>
<p>每块黑皮或白皮看作是一个面。从上图中我们可以足球中每个五边形周围有5个六边形，每个六边形周围有3个五边形和3个六边形。</p>
<p>假设有x个五角边，y个六边形，一共有E条边，V个顶点。</p>
<p>每条边有一个五边形和一个六边形共用，有：</p>
<p>E = ( 5x + 6y ) / 2</p>
<p>另外，所有边都是六边形的一条边，每个六边形有3条边是自己和一个五边形所有，另外3条与另一个六边形共用，有：</p>
<p>E = 3y + 3y / 2</p>
<p>每个顶点有1个五边形和2个六边形共有，有：</p>
<p>V = ( 5x + 6y ) / 3</p>
<p>使用欧拉公式，有：</p>
<p>V + ( x + y ) &#8211; E = 2</p>
<p>联立以上4个方程，可以解得：</p>
<p>x = 12, y = 20</p>
<p>就是说足球中有12块黑皮，20块白皮。</p>


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		<title>A</title>
		<link>http://pkill.info/b/149/a/</link>
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		<pubDate>Mon, 01 Jun 2009 12:39:37 +0000</pubDate>
		<dc:creator>Zhiqiang Ma</dc:creator>
				<category><![CDATA[Blog]]></category>

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		<description><![CDATA[Thinking + Hard working + Time Read more:This blog passes W3C XHTML 1.0 Transitional Validation A free personal wordpress blog solution New blog address

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			<content:encoded><![CDATA[<p>Thinking +</p>
<p>Hard working +</p>
<p>Time</p>


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		<title>2009年5月9日 311寝室 枫林校区小聚</title>
		<link>http://pkill.info/b/137/09-05-2009-311-%e6%9e%ab%e6%9e%97%e6%a0%a1%e5%8c%ba%e5%b0%8f%e8%81%9a/</link>
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		<pubDate>Sat, 09 May 2009 15:14:00 +0000</pubDate>
		<dc:creator>Zhiqiang Ma</dc:creator>
				<category><![CDATA[Blog]]></category>

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		<description><![CDATA[Read more:This blog passes W3C XHTML 1.0 Transitional Validation New blog address 拿到毕业证啦

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		<title>跑步</title>
		<link>http://pkill.info/b/136/%e8%b7%91%e6%ad%a5/</link>
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		<pubDate>Fri, 08 May 2009 03:28:00 +0000</pubDate>
		<dc:creator>Zhiqiang Ma</dc:creator>
				<category><![CDATA[Blog]]></category>

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		<description><![CDATA[最近晚上去跑步, 总结出一些经验: 不要总在想着还有几圈就可以跑完, 这样会使自己感觉到更加累. 而是关注现在的事情. 比如可以想着现在是在跑第几圈. 这样一圈圈跑下去, 突然就会发现已经跑了七圈. 跑步只是做事情的一个特例. 有些事情可能要很多时间很多步难才能做完, 如果总是想着还有多少要做是非常累人的. 而将一个大目标分解成许多个小目标, 一步一个脚印地实现一个个看起来比较容易的小目标, 大的目标会得以完成. 完成一件困难的事情变成的完成多件简单的事情. Read more:This blog passes W3C XHTML 1.0 Transitional Validation New blog address 拿到毕业证啦

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			<content:encoded><![CDATA[<p>最近晚上去跑步, 总结出一些经验:</p>
<p>不要总在想着还有几圈就可以跑完, 这样会使自己感觉到更加累. 而是关注现在的事情. 比如可以想着现在是在跑第几圈. 这样一圈圈跑下去, 突然就会发现已经跑了七圈.</p>
<p>跑步只是做事情的一个特例. 有些事情可能要很多时间很多步难才能做完, 如果总是想着还有多少要做是非常累人的. 而将一个大目标分解成许多个小目标, 一步一个脚印地实现一个个看起来比较容易的小目标, 大的目标会得以完成. 完成一件困难的事情变成的完成多件简单的事情.</p>


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