<?xml version="1.0" encoding="utf-8"?><?xml-stylesheet type='text/xsl' href='http://xnrio.spaces.live.com/mmm2008-05-17_13.22/rsspretty.aspx?rssquery=en-US;http%3a%2f%2fxnrio.spaces.live.com%2fcategory%2f%e6%88%91%e7%9a%84%e5%8e%9f%e5%88%9b%e4%bd%9c%e5%93%81%2ffeed.rss' version='1.0'?><rss version="2.0" xmlns:slash="http://purl.org/rss/1.0/modules/slash/" xmlns:msn="http://schemas.microsoft.com/msn/spaces/2005/rss" xmlns:live="http://schemas.microsoft.com/live/spaces/2006/rss" xmlns:dcterms="http://purl.org/dc/terms/" xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" xmlns:wfw="http://wellformedweb.org/CommentAPI/"><channel><title>RIO's: 我的原创作品</title><description /><link>http://xnrio.spaces.live.com/?_c11_BlogPart_BlogPart=blogview&amp;_c=BlogPart&amp;partqs=cat%25E6%2588%2591%25E7%259A%2584%25E5%258E%259F%25E5%2588%259B%25E4%25BD%259C%25E5%2593%2581</link><language>en-US</language><pubDate>Sat, 26 Jul 2008 12:59:50 GMT</pubDate><lastBuildDate>Sat, 26 Jul 2008 12:59:50 GMT</lastBuildDate><generator>Microsoft Spaces v1.1</generator><docs>http://www.rssboard.org/rss-specification</docs><ttl>60</ttl><cf:parentRSS>http://xnrio.spaces.live.com/blog/feed.rss</cf:parentRSS><live:type>blogcategory</live:type><live:identity><live:id>2749832995832634756</live:id><live:alias>xnrio</live:alias></live:identity><cf:listinfo><cf:group ns="http://schemas.microsoft.com/live/spaces/2006/rss" element="typelabel" label="Type" /><cf:group ns="http://schemas.microsoft.com/live/spaces/2006/rss" element="tag" label="Tag" /><cf:group element="category" label="Category" /><cf:sort element="pubDate" label="Date" data-type="date" default="true" /><cf:sort element="title" label="Title" data-type="string" /><cf:sort ns="http://purl.org/rss/1.0/modules/slash/" element="comments" label="Comments" data-type="number" /></cf:listinfo><item><title>毕业晚会-拓荒者的激情</title><link>http://xnrio.spaces.live.com/Blog/cns!26295E8A5C409D84!2527.entry</link><description>&lt;div&gt;不多说了，直接上视频。&lt;a href="http://v.youku.com/v_show/id_XMzIxMTYwMjA=.html"&gt;截至2008年7月2日晚上12点，已收到来自松园、研究生部、银杏公寓一舍&lt;/a&gt;及二舍、PwC西财人的贺电。感谢大家的支持！&lt;/div&gt;
&lt;div&gt;该视频优酷访问量突破400,000（&lt;a href="http://v.youku.com/v_show/id_XMzIxMjE3NTY=.html"&gt;http://v.youku.com/v_show/id_XMzIxMjE3NTY=.html&lt;/a&gt;）&lt;/div&gt;
&lt;p&gt;&lt;span style="display:none"&gt; &lt;/span&gt;&lt;span style="display:none"&gt; &lt;/span&gt;&lt;span style="display:none"&gt; &lt;/span&gt;&lt;span style="display:none"&gt; &lt;/span&gt;&lt;span style="display:none"&gt; &lt;/span&gt;&lt;span style="display:none"&gt; &lt;/span&gt;&lt;span style="display:none"&gt; &lt;/span&gt;&lt;span style="display:none"&gt; &lt;/span&gt;&lt;span style="display:none"&gt; &lt;/span&gt;&lt;span style="display:none"&gt; &lt;/span&gt; 
&lt;div&gt;该片灵感来源于PwC的年会舞蹈节目，但被我们抬升到了另一个高度。主演人员除我外有去人大读书的，也有去四大工作的，阵容不能小觑。&lt;/div&gt;
&lt;div&gt;这里还要感谢一下所有支持我们的人，包括整个创作团队，视频拍摄，以及金融学院。没有他们就没有这个节目。&lt;/div&gt;
&lt;div&gt;该版本的youku地址：&lt;a href="http://v.youku.com/v_show/id_XMzIxMTYwMjA=.html"&gt;http://v.youku.com/v_show/id_XMzIxMTYwMjA=.html&lt;/a&gt;&lt;/div&gt;
&lt;div&gt;另一个从侧面拍的版本的地址：&lt;a href="http://v.youku.com/v_show/id_XMzIxMjE3NTY=.html"&gt;http://v.youku.com/v_show/id_XMzIxMjE3NTY=.html&lt;/a&gt;&lt;/div&gt;
&lt;div&gt;附一张院长的激情演唱：&lt;/div&gt;
&lt;div&gt;&lt;img style="left:0px;visibility:visible;width:598px;top:0px;height:400px" alt="" src="http://tkfiles.storage.live.com/y1pSh8jfyFtfsrbhtbmR_b5xK7IvMcRT-_dX7bppoEYLDyrcpRFel9-JuLp3LNPyk_ZlGnnr9_hv8k"&gt;&lt;/div&gt;&lt;img src="http://c.services.spaces.live.com/CollectionWebService/c.gif?cid=2749832995832634756&amp;page=RSS%3a+%e6%af%95%e4%b8%9a%e6%99%9a%e4%bc%9a-%e6%8b%93%e8%8d%92%e8%80%85%e7%9a%84%e6%bf%80%e6%83%85&amp;referrer=" width="1px" height="1px" border="0" alt=""&gt;&lt;img style="position:absolute" alt="" width="0px" height="0px" src="http://c.live.com/c.gif?NC=31263&amp;amp;NA=1149&amp;amp;PI=73329&amp;amp;RF=&amp;amp;DI=3919&amp;amp;PS=85545&amp;amp;TP=xnrio.spaces.live.com&amp;amp;GT1=xnrio"&gt;</description><comments>http://xnrio.spaces.live.com/Blog/cns!26295E8A5C409D84!2527.entry#comment</comments><guid isPermaLink="true">http://xnrio.spaces.live.com/Blog/cns!26295E8A5C409D84!2527.entry</guid><pubDate>Sat, 21 Jun 2008 02:27:03 GMT</pubDate><slash:comments>25</slash:comments><msn:type>blogentry</msn:type><live:type>blogentry</live:type><live:typelabel>Blog entry</live:typelabel><wfw:commentRss>http://xnrio.spaces.live.com/blog/cns!26295E8A5C409D84!2527/comments/feed.rss</wfw:commentRss><wfw:comment>http://xnrio.spaces.live.com/Blog/cns!26295E8A5C409D84!2527.entry#comment</wfw:comment><dcterms:modified>2008-07-04T09:34:42Z</dcterms:modified></item><item><title>散点图了解地震情况</title><link>http://xnrio.spaces.live.com/Blog/cns!26295E8A5C409D84!2498.entry</link><description>&lt;div&gt;由于从5.12开始老妈就因为担心我而睡不着觉，我已于昨天回到郑州，而老妈也终于睡了一次安稳觉。&lt;/div&gt;
&lt;div&gt;很多人说2008流年不利，而我这两天一直在看电视，我的感觉是2008不是灾难年，而是感动中国年。&lt;/div&gt;
&lt;div&gt;希望2008过后中国人民能更团结，更坚强，更幸福。&lt;/div&gt;
&lt;div&gt;
&lt;hr&gt;
&lt;/div&gt;
&lt;div&gt;用excel做了一个bubble chart&lt;br&gt;横轴为日期，纵轴为震级&lt;br&gt;圆球的大小表示震感大小，旁边数字表示震级。震感的计算考虑了震源的深浅问题，因此同样大小的震级带来的震感会有所不同。&lt;br&gt;数据来源于&lt;a href="http://earthquake.usgs.gov/eqcenter/recenteqsww/Maps/10/105_30_eqs.php" target="_blank"&gt;&lt;u&gt;&lt;font color="#800080"&gt;http://earthquake.usgs.gov/eqcenter/recenteqsww/Maps/10/105_30_eqs.php&lt;/font&gt;&lt;/u&gt;&lt;/a&gt;&lt;br&gt;其中已经对日期进行转换&lt;br&gt;&lt;img style="left:0px;visibility:visible;width:632px;top:0px;height:376px" alt="" src="http://tkfiles.storage.live.com/y1pSh8jfyFtfspGM60sclQ2l-MS7lsDET3Dl4K8WvbtP7JWRlEcjncmelV-Ld4-7QTeLY_gGC3cBGk"&gt;&lt;/div&gt;
&lt;div&gt;可以看出，从5.12至今，地震次数在显著减少，同时，高强度的余震，例如5级以上的，也在显著减少，但每天仍会出现至少一次&lt;br&gt;所以我认为大家可以不必恐慌，但仍需留意余震。&lt;/div&gt;
&lt;div&gt;从5月22日开始，余震有加强趋势。不过也不必担心，毕竟能量释放一次就安全一些。&lt;/div&gt;&lt;img src="http://c.services.spaces.live.com/CollectionWebService/c.gif?cid=2749832995832634756&amp;page=RSS%3a+%e6%95%a3%e7%82%b9%e5%9b%be%e4%ba%86%e8%a7%a3%e5%9c%b0%e9%9c%87%e6%83%85%e5%86%b5&amp;referrer=" width="1px" height="1px" border="0" alt=""&gt;&lt;img style="position:absolute" alt="" width="0px" height="0px" src="http://c.live.com/c.gif?NC=31263&amp;amp;NA=1149&amp;amp;PI=73329&amp;amp;RF=&amp;amp;DI=3919&amp;amp;PS=85545&amp;amp;TP=xnrio.spaces.live.com&amp;amp;GT1=xnrio"&gt;</description><comments>http://xnrio.spaces.live.com/Blog/cns!26295E8A5C409D84!2498.entry#comment</comments><guid isPermaLink="true">http://xnrio.spaces.live.com/Blog/cns!26295E8A5C409D84!2498.entry</guid><pubDate>Sun, 25 May 2008 14:26:24 GMT</pubDate><slash:comments>5</slash:comments><msn:type>blogentry</msn:type><live:type>blogentry</live:type><live:typelabel>Blog entry</live:typelabel><wfw:commentRss>http://xnrio.spaces.live.com/blog/cns!26295E8A5C409D84!2498/comments/feed.rss</wfw:commentRss><wfw:comment>http://xnrio.spaces.live.com/Blog/cns!26295E8A5C409D84!2498.entry#comment</wfw:comment><dcterms:modified>2008-05-27T13:07:05Z</dcterms:modified></item><item><title>牛肉面</title><link>http://xnrio.spaces.live.com/Blog/cns!26295E8A5C409D84!2096.entry</link><description>&lt;div&gt;鉴于最近江湖上一些艺人兴风作浪，自己拍了照片还打死都不承认，再加上本人喜欢凑热闹的本性，故发布一部短片。此短片拍摄于07年12月份，乃寝室朋友忙里偷闲史诗般巨著，贴出来与大家分享。我想说的就是：如果不能引导大众，就娱乐大众吧！&lt;/div&gt;
&lt;div&gt; &lt;/div&gt;
&lt;img src="http://c.services.spaces.live.com/CollectionWebService/c.gif?cid=2749832995832634756&amp;page=RSS%3a+%e7%89%9b%e8%82%89%e9%9d%a2&amp;referrer=" width="1px" height="1px" border="0" alt=""&gt;&lt;img style="position:absolute" alt="" width="0px" height="0px" src="http://c.live.com/c.gif?NC=31263&amp;amp;NA=1149&amp;amp;PI=73329&amp;amp;RF=&amp;amp;DI=3919&amp;amp;PS=85545&amp;amp;TP=xnrio.spaces.live.com&amp;amp;GT1=xnrio"&gt;</description><comments>http://xnrio.spaces.live.com/Blog/cns!26295E8A5C409D84!2096.entry#comment</comments><guid isPermaLink="true">http://xnrio.spaces.live.com/Blog/cns!26295E8A5C409D84!2096.entry</guid><pubDate>Wed, 13 Feb 2008 16:30:09 GMT</pubDate><slash:comments>5</slash:comments><msn:type>blogentry</msn:type><live:type>blogentry</live:type><live:typelabel>Blog entry</live:typelabel><wfw:commentRss>http://xnrio.spaces.live.com/blog/cns!26295E8A5C409D84!2096/comments/feed.rss</wfw:commentRss><wfw:comment>http://xnrio.spaces.live.com/Blog/cns!26295E8A5C409D84!2096.entry#comment</wfw:comment><dcterms:modified>2008-02-13T16:30:09Z</dcterms:modified></item><item><title>Das Leben in Deutschland</title><link>http://xnrio.spaces.live.com/Blog/cns!26295E8A5C409D84!1969.entry</link><description>&lt;div&gt; &lt;/div&gt;
&lt;div&gt;这是2007年离开柏林前拍摄的一段视频，趁着有空制作了一下，中午传到了网上，现在拿出来和大家分享一下&lt;/div&gt;
&lt;div&gt;全长约20分钟，记录了我住的地方，每天经过的地铁站，学校，食堂等日常生活&lt;/div&gt;&lt;span style="display:none"&gt;&lt;/span&gt;&lt;span style="display:none"&gt; &lt;/span&gt;&lt;img src="http://c.services.spaces.live.com/CollectionWebService/c.gif?cid=2749832995832634756&amp;page=RSS%3a+Das+Leben+in+Deutschland&amp;referrer=" width="1px" height="1px" border="0" alt=""&gt;&lt;img style="position:absolute" alt="" width="0px" height="0px" src="http://c.live.com/c.gif?NC=31263&amp;amp;NA=1149&amp;amp;PI=73329&amp;amp;RF=&amp;amp;DI=3919&amp;amp;PS=85545&amp;amp;TP=xnrio.spaces.live.com&amp;amp;GT1=xnrio"&gt;</description><comments>http://xnrio.spaces.live.com/Blog/cns!26295E8A5C409D84!1969.entry#comment</comments><guid isPermaLink="true">http://xnrio.spaces.live.com/Blog/cns!26295E8A5C409D84!1969.entry</guid><pubDate>Mon, 07 Jan 2008 05:29:51 GMT</pubDate><slash:comments>10</slash:comments><msn:type>blogentry</msn:type><live:type>blogentry</live:type><live:typelabel>Blog entry</live:typelabel><wfw:commentRss>http://xnrio.spaces.live.com/blog/cns!26295E8A5C409D84!1969/comments/feed.rss</wfw:commentRss><wfw:comment>http://xnrio.spaces.live.com/Blog/cns!26295E8A5C409D84!1969.entry#comment</wfw:comment><dcterms:modified>2008-02-10T13:44:40Z</dcterms:modified></item><item><title>贺岁片-笑傲江湖</title><link>http://xnrio.spaces.live.com/Blog/cns!26295E8A5C409D84!1959.entry</link><description>&lt;span style="display:none"&gt;&lt;/span&gt;
&lt;div&gt; &lt;/div&gt;
&lt;div&gt;不多说了，我们寝室拍的一部成本几乎为零的影片，感谢片中各位的辛勤劳动。&lt;/div&gt;
&lt;div&gt;片尾那几句话的意思是希望找工作和考研的同学都顺利，沧海横流，方显英雄本色。&lt;/div&gt;
&lt;div&gt; &lt;/div&gt;
&lt;div&gt;其实快乐最重要，比如我虽然被HSB拒了，但阿Q精神告诉我，由于HSBC是HSB的控股集团，同时HSBC非常想要我但又怕我签了HSB，所以就命令HSB把我拒了，哈哈。看，同样一件事不同的角度去想就会快乐很多。当然，不能盲目自信，一定要继续努力才行！&lt;/div&gt;
&lt;div&gt; &lt;/div&gt;
&lt;div&gt;2007的最后一天，罗伯特和王胖子回家了，胖忍者在家休息，点点同学因为电影院人太多所以在家把奋斗看完了，我和熊彼得、HYC、WZF打了足球后回寝室于宋投、二月鸟共度2007的最后10分钟。&lt;/div&gt;
&lt;div&gt;最后想说的是，真的很快，2008了。&lt;/div&gt;
&lt;div&gt;希望所有人都幸福。&lt;/div&gt;&lt;img src="http://c.services.spaces.live.com/CollectionWebService/c.gif?cid=2749832995832634756&amp;page=RSS%3a+%e8%b4%ba%e5%b2%81%e7%89%87-%e7%ac%91%e5%82%b2%e6%b1%9f%e6%b9%96&amp;referrer=" width="1px" height="1px" border="0" alt=""&gt;&lt;img style="position:absolute" alt="" width="0px" height="0px" src="http://c.live.com/c.gif?NC=31263&amp;amp;NA=1149&amp;amp;PI=73329&amp;amp;RF=&amp;amp;DI=3919&amp;amp;PS=85545&amp;amp;TP=xnrio.spaces.live.com&amp;amp;GT1=xnrio"&gt;</description><comments>http://xnrio.spaces.live.com/Blog/cns!26295E8A5C409D84!1959.entry#comment</comments><guid isPermaLink="true">http://xnrio.spaces.live.com/Blog/cns!26295E8A5C409D84!1959.entry</guid><pubDate>Mon, 31 Dec 2007 14:21:18 GMT</pubDate><slash:comments>7</slash:comments><msn:type>blogentry</msn:type><live:type>blogentry</live:type><live:typelabel>Blog entry</live:typelabel><wfw:commentRss>http://xnrio.spaces.live.com/blog/cns!26295E8A5C409D84!1959/comments/feed.rss</wfw:commentRss><wfw:comment>http://xnrio.spaces.live.com/Blog/cns!26295E8A5C409D84!1959.entry#comment</wfw:comment><dcterms:modified>2008-02-10T13:45:28Z</dcterms:modified></item><item><title>论靠脸吃饭和靠能力吃饭</title><link>http://xnrio.spaces.live.com/Blog/cns!26295E8A5C409D84!1824.entry</link><description>&lt;p&gt;今天要和大家讨论的是一个关于靠脸吃饭的和靠能力吃饭的人应在多大年纪结婚的模型。 
&lt;p&gt;我们这里首先做以下简单假设:&lt;br&gt;1. 靠脸吃饭的人没有真才实学,或者说,我们在此讨论中姑且不考虑既有真才实学,同时还貌比潘安、赛貂蝉的人。&lt;br&gt;2. 靠能力吃饭的人相貌平平，或者说他或她的长相不能给自己带来任何的附加价值。我们不考虑既有事业,又很帅又幽默的男性或女性,因为其数量也很少,比如我。(床板儿大的砖头向我飞来@$!%#^#*&amp;amp;!$_*(@!)&lt;br&gt;3. 人的一生效用最大值100,假设靠脸吃饭的人之间无差异,靠能力吃饭的人之间也无差异。&lt;br&gt;各位亲爱的读者，如果你同意我以上的假设并且具备了基本的微积分知识，那么希望你能有耐心的读完本文。感谢您的配合。 
&lt;p&gt;基于以上假设,我们可以分别划出靠脸吃饭的人和靠能力吃饭的人的价值随年龄变化的曲线 U=f(y)。U为效用，Y为年龄。&lt;br&gt; &lt;img style="left:0px;visibility:visible;width:600px;top:0px;height:327px" alt="" src="http://tkfiles.storage.live.com/y1pSh8jfyFtfsr-fWof4oKFDi3ek0Lg8mge04JK5MhNEzlqBI_e_bvW_Z8hMz2Uwfgk0QWCp5TUheU"&gt;&lt;br&gt;由此图我们可以看出，靠脸吃饭的人的价值在18-24岁急速上升，26岁达到顶点，28岁后迅速下跌。而靠能力吃饭的人的价值则在22-30岁稳步上升，且升至最大值后下降缓慢。此理论非我独创，参见Rob Campbell (J.P.Morgan, Diversified Industrials Investment Banking) 的留言。（详见本文最下方的引文） 
&lt;p&gt;根据统计数据及线形回归，先做出两条平滑曲线：“靠脸吃饭”“靠能力吃饭”。&lt;br&gt;两条曲线相交于K点（28，78），其含义是靠能力吃饭的人在28岁时价值（财富及社会地位）等于靠脸吃饭的人在28岁的价值（美貌）。&lt;br&gt;好的，那么很多人会得出一个结论，靠能力吃饭的人和靠脸吃饭的人最适合结婚的年龄是在他们28岁那一年。因为他们的“价值”相等。&lt;br&gt;而现实中这种情况很少发生，为什么呢？根据Rob Campbell先生的留言我们可以清楚地明白，28岁的女性是一个贬值资产，而28岁的男性是一项升值资产。（很多女性看到这里又会心存不满，请见谅。本人坚持认为男女是平等的，男性中也存在大量靠脸吃饭的人，反之亦然。何况随着人口比例失衡，女权社会即将到来。）&lt;br&gt;至于靠脸吃饭的人是贬值资产，靠能力吃饭的人是增值资产这一论断我们也可以从该曲线在K点的切线斜率看出来：“靠能力吃饭”曲线在K点的斜率经测算为0.9，“靠脸吃饭”曲线在K点的斜率经测算为：-1.2。（计算方法由MATLAB进行线形回归得出曲线方程并求一阶倒数，过程繁琐在此不赘述。并且由于统计样本数量偏少，曲线图和函数事实上并不一致，因此暂不将原始数据和函数表达式公布）&lt;br&gt;之所以大多数人会犯以上错误（28岁的靠脸吃饭的人和靠能力吃饭的人结合），因为他们将该图形默认为了“数量-价格”曲线，而事实上，上图为“年龄-价值”曲线。&lt;br&gt; “年龄-价值”不同于“数量-价格”曲线的最大之处在于后者必须在买卖双方给出相同的数量价格才能成交，而男女之间结婚显然并不要求年龄一样。 
&lt;p&gt;那么，究竟这两种人最适宜结婚的时间是何时呢？&lt;br&gt;根据我们之前的讨论，或许各位已经想到，那就是双方价值的增长速度——曲线切线的斜率——最大的时候，因为此时价值增值最快。&lt;br&gt;根据对曲线进行一阶求导以及根据中国大陆《婚姻法》对男女结婚年龄的限制，我们得出以下两条切线：&lt;br&gt; &lt;img style="left:0px;visibility:visible;width:600px;top:0px;height:327px" alt="" src="http://tkfiles.storage.live.com/y1pSh8jfyFtfsrosc5u-3owezLx5ezEsmybcyuBod5M09ZHyV4zS6FHMuxQYCgoagRyblJSUuYf-Us"&gt;&lt;br&gt;两条切线分别切两条曲线于P₁和P₂两点，且该两条曲线在该两点斜率相同。因此两类人最适合谈恋爱的年纪分别为22岁和25岁。&lt;br&gt;各位靠脸吃饭的朋友可能会有异议，此时你们价值约为76，而靠能力吃饭的人价值只有50。作为靠脸吃饭的你是否会心存不甘？&lt;br&gt;但请注意，Y=25时，“靠能力吃饭”曲线不仅有很高的增长速度（一阶倒数最大），更重要的是，此时该曲线的二阶倒数为零，也就是说，这是该曲线的一个拐点，该曲线速度将加速上升，即靠能力吃饭的人价值将加速升值。&lt;br&gt;而现实中的确存在大量的靠能力吃饭的人比靠脸吃饭的人配偶年龄稍大的现象，例如事业有成的男人和年轻小姑娘，再例如富婆和小白脸。这些现象与我们的模型吻合。 
&lt;p&gt;为了进一步说服各位朋友该模型的重要性和准确性,我将证明以下观点:&lt;br&gt;22岁的靠脸吃饭的朋友和25的靠能力吃饭的朋友谈恋爱并不吃亏,尽管该瞬间靠脸吃饭的人的价值大于男性靠能力吃饭的人.&lt;br&gt;证明过程请先看下图:&lt;br&gt; &lt;img style="left:0px;visibility:visible;width:600px;top:0px;height:327px" alt="" src="http://tkfiles.storage.live.com/y1pSh8jfyFtfsoLTe_xucMZOhbBsJ7lafuTpB1Xg-EDP8c7b2Z30Zdvv4hJncAHNNxotU-elzhlRDE"&gt;&lt;br&gt;上图中,左边蓝色阴影部分面积S₁=∫[U(靠脸吃饭)-U(靠能力吃饭)]，也就是一个22岁靠脸吃饭的人在和25岁靠能力吃饭的人恋爱后，靠能力吃饭的人从靠脸吃饭的人那里得到的净价值，俗话称之为“占的便宜”。&lt;br&gt;而右边红色阴影部分面积S₂=∫[U(靠能力吃饭)-U(靠脸吃饭)]，即28岁后，原先的22岁靠脸吃饭的人从其原先25岁靠能力吃饭的人处得到的净价值。显然，S₂&amp;gt;S₁。各位靠脸吃饭的人总得为将来着想吧。 
&lt;p&gt;因此各位靠脸吃饭的朋友在一生最美好的时间中切莫因小失大,切莫过于自信,把握好自己的幸福. 
&lt;p&gt;由于本人时间有限，此模型暂告一段落。祝各位年轻读者早成眷属，白头偕老。 
&lt;p&gt;版权所有，欢迎转载&lt;br&gt;现实社会纷繁复杂，请各位切勿对号入座 
&lt;p&gt;  
&lt;p&gt;                                               里奥.XU&lt;br&gt;                                                        2008/2/29 于松园 
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&lt;p&gt;附录：Campbell先生及Pers小姐对话及读者评价&lt;br&gt;25 Year-Old Beauty Seeks Rich Banker 
&lt;p&gt;The following exchange took place on Craigslist - the investment banker's response is a classic! 
&lt;p&gt;'What am I doing wrong? 
&lt;p&gt;Okay, I’m tired of beating around the bush. I’m a beautiful (spectacularly beautiful) 25 year old girl. I’m articulate and classy. I’m not from New York. I’m looking to get married to a guy who makes at least half a million a year. I know how that sounds, but keep in mind that a million a year is middle class in New York City, so I don’t think I’m overreaching at all. 
&lt;p&gt;Are there any guys who make 500K or more on this board ? Any wives ? Could you send me some tips ? I dated a business man who made an average of around 200 - 250K. But that’s where I seem to hit a roadblock. $250,000 won’t get me to Central Park West. I know a woman in my yoga class who was married to an investment banker, and lives in Tribeca. She’s not as pretty as I am, nor is she a great genius. So what is she doing right ? How do I get to her level ? 
&lt;p&gt;Here are my questions specifically: 
&lt;p&gt;- Where do you single rich men hang out ? Give me specifics - bars, restaurants, gyms 
&lt;p&gt;- What are you looking for in a mate? Be honest guys, you won’t hurt my feelings 
&lt;p&gt;- Is there an age range I should be targeting ? 
&lt;p&gt;- Why are some of the women living lavish lifestyles on the Upper East Side so plain? I’ve seen really ‘Plain Jane’ boring types, who have nothing to offer incredibly wealthy guys. Then I’ve seen drop dead gorgeous girls in singles bars in the East Village. What’s the story there ? 
&lt;p&gt;- Lawyers, investment bankers, doctors. How much do those guys really make ? And where do the hedge fund guys hang out ? 
&lt;p&gt;- How do you rich guys decide on marriage vs. just a girlfriend ? I am looking for MARRIAGE ONLY. 
&lt;p&gt;Please hold your insults - I’m putting myself out there in an honest way. Most beautiful women are superficial - at least I’m being up front about it. I wouldn’t be searching for these kind of guys if I wasn’t able to match them - in looks, culture, sophistication, and keeping a nice hearth and home'. 
&lt;p&gt;An Investment Banker's Response: 
&lt;p&gt;Dear Pers-431649184: 
&lt;p&gt;'I read your posting with great interest and have thought meaningfully about your dilemma. I offer the following analysis of your predicament. 
&lt;p&gt;Firstly, I’m not wasting your time. I qualify as a guy who fits your bill - that is, I make more than $500K per year. That said, here’s how I see it: 
&lt;p&gt;Your offer, from the prospective of a guy like me, is a plain and simple crappy business deal. Here’s why. Cutting through all the B.S., what you suggest is a simple trade: you bring your looks to the party and I bring my money. Fine, simple. But here’s the rub, your looks will fade and my money will likely continue into perpetuity - in fact, it is very likely that my income will increase, but it is an absolute certainty that you won’t be getting any more beautiful! 
&lt;p&gt;So, in economic terms, you are a depreciating asset. Not only are you a depreciating asset, however, your depreciation accelerates! Let me explain - you’re 25 now and will likely remain pretty hot for the next 5 years, but less so each year. Then the fade begins in earnest. By 35 - stick a fork in you! 
&lt;p&gt;So, in Wall Street terms, we'd call you a trading position - not a buy and hold…hence the rub…marriage. It doesn’t make good business sense to 'buy you' (which is what you’re asking) - so I’d rather lease. In case you think I’m being cruel, I would say the following: if my money were to go away, so would you - so when your beauty fades I need an out too. It’s as simple as that. So the deal that makes sense for me is dating, not marriage. 
&lt;p&gt;Separately, I was taught early in my career about efficient markets. So, I wonder why a girl as 'articulate, classy and spectacularly beautiful' as you has been unable to find your sugar daddy. I find it hard to believe that, if you are as gorgeous as you say you are, your $500K man hasn’t found you - if only for a tryout. 
&lt;p&gt;By the way, you could always find a way to make your own money - and then we wouldn’t need to have this difficult conversation. 
&lt;p&gt;With all that said, I must say you’re going about it the right way. Classic 'pump and dump'. I hope this is helpful, and if you want to enter into some sort of lease, please let me know'. 
&lt;p&gt;Reader Comment: 
&lt;p&gt;1. If she piles on the weight, it's likely to be 'plump and dump!' 
&lt;p&gt;2. 'The Investment Banker's response is correct if you see the gold digger as providing only companionship, looks and sophistication. 
&lt;p&gt;However, some Investment Bankers may wish to have offspring carrying their genes into the next generation. This is a long-term contract, and you have to 'buy and hold' rather than 'lease'. Therefore this 25 year-old beauty should change her sales pitch to: 'I'll give you nice children AND I'll let you do whatever else you want on the side as long as you're discreet'. 
&lt;p&gt;3. 'I hate to say it but, in the current environment, this Master of the Universe should ship her in asap. Then at least he'll have a nice shoulder to cry on when he gets canned. We're ALL depreciating assets these days. At least this young lady has some gumption as well as those spectacular good looks and style to fall back on'. 
&lt;p&gt;4. Response to investment banker: 'Ah! But I am an depreciating asset all right (for that matter, you are too - but your cash flow stream more than overcompensates for the toxicity of the future tummy expansion, and contraction of the hair). But the depreciating asset is a convertible one with two embedded options: 
&lt;p&gt;The first option is for conversion to a wife, preferably before the day that the hair / tummy factor becomes less than positive and cashflow benefits become more important. If you do not take up that wife-conversion option, then the expanding gut and thinning hair will require a constantly and exponentially increasing stream of invested earnings to attract young chicks. 
&lt;p&gt;The second option is that you have a put option on a baby (which is preferably contingent on the first option being exercised), safe in the knowledge that good genes will be passed on. You have to admit, the main reason why you investment bankers are so attractive is because you can make money. However, we have established information that those money-making genes do not travel very well. My good looks will probably be passed on though. 
&lt;p&gt;So, for an upfront investment in this depreciating asset will, in the long run, make your overall yield curve positive. &lt;br&gt;Rob Campbell&lt;br&gt;J.P.Morgan&lt;br&gt;Diversified Industrials Investment Banking&lt;br&gt;277 Park Avenue , 16/F, New York, NY 10172&lt;br&gt;&lt;img src="http://c.services.spaces.live.com/CollectionWebService/c.gif?cid=2749832995832634756&amp;page=RSS%3a+%e8%ae%ba%e9%9d%a0%e8%84%b8%e5%90%83%e9%a5%ad%e5%92%8c%e9%9d%a0%e8%83%bd%e5%8a%9b%e5%90%83%e9%a5%ad&amp;referrer=" width="1px" height="1px" border="0" alt=""&gt;&lt;img style="position:absolute" alt="" width="0px" height="0px" src="http://c.live.com/c.gif?NC=31263&amp;amp;NA=1149&amp;amp;PI=73329&amp;amp;RF=&amp;amp;DI=3919&amp;amp;PS=85545&amp;amp;TP=xnrio.spaces.live.com&amp;amp;GT1=xnrio"&gt;</description><comments>http://xnrio.spaces.live.com/Blog/cns!26295E8A5C409D84!1824.entry#comment</comments><guid isPermaLink="true">http://xnrio.spaces.live.com/Blog/cns!26295E8A5C409D84!1824.entry</guid><pubDate>Wed, 24 Oct 2007 12:38:34 GMT</pubDate><slash:comments>13</slash:comments><msn:type>blogentry</msn:type><live:type>blogentry</live:type><live:typelabel>Blog entry</live:typelabel><wfw:commentRss>http://xnrio.spaces.live.com/blog/cns!26295E8A5C409D84!1824/comments/feed.rss</wfw:commentRss><wfw:comment>http://xnrio.spaces.live.com/Blog/cns!26295E8A5C409D84!1824.entry#comment</wfw:comment><dcterms:modified>2008-03-01T02:21:08Z</dcterms:modified></item><item><title>大四散伙饭的套利机会和风险规避</title><link>http://xnrio.spaces.live.com/Blog/cns!26295E8A5C409D84!1818.entry</link><description>&lt;div&gt;
&lt;div&gt;大四毕业的散伙饭是一定要吃的&lt;/div&gt;
&lt;div&gt;虽然还有半年多的时间，可鄙人窃以为其中有较大学问可研究，故写文与各位共享。&lt;/div&gt;
&lt;div&gt; &lt;/div&gt;
&lt;div&gt;可以想象，明年六月，大学城必然掀起一股散伙饭热潮。简单的供需关系告诉我们，届时散伙饭的包桌价格必然上升。那我们应该如何应对？甚至如果从中获利？&lt;/div&gt;
&lt;div&gt; &lt;/div&gt;
&lt;div&gt;1。远期买入（long forward position）&lt;/div&gt;
&lt;div&gt;例如目前散伙饭的远期价格是30块一人，和现货价格应该一样（我们假设饭店老板无金融知识），而在明年六月，散伙饭现货价格预期看涨。假设为35元/人。那我们现在以30元/人的价格买入，一方面可以规避未来CPI上涨的风险，一方面避免未来供过于求带来的价格上涨。&lt;/div&gt;
&lt;div&gt;此时我们的远期价格是：S2+F1-F2&lt;/div&gt;
&lt;div&gt; &lt;/div&gt;
&lt;div&gt;2。大量远期买入并在未来即期卖出（magnitude long forward position and sell spot in the future）&lt;/div&gt;
&lt;div&gt;交院，农校，教育学院等其他高校可被认为无此金融意识，则此时出现潜在套利机会。&lt;/div&gt;
&lt;div&gt;我们大量从餐馆老板手中预定远期的散伙饭，届时以低于现货价格又高于期货价格的水平卖出，如33元/人，则每人可获得收入2元。&lt;/div&gt;
&lt;div&gt;预期损益是：E=n*(future spot price - forward price) &lt;/div&gt;
&lt;div&gt; &lt;/div&gt;
&lt;div&gt;3。对该远期合同的套期保值(hedge on the forward contract)&lt;/div&gt;
&lt;div&gt;由于我们买入大量期货，万一到时候人们都不吃散伙饭怎么办？或者到时候物价大跌，散伙饭价格变成28元/人，我们岂不是要遭受损失？&lt;/div&gt;
&lt;div&gt;因此我们可以用相应的衍生品进行套期保值。&lt;/div&gt;
&lt;div&gt;a方案：远期在郑州商品交易所（&lt;a href="http://www.czce.com.cn/"&gt;&lt;font color="#00246e"&gt;www.czce.com.cn&lt;/font&gt;&lt;/a&gt;）卖出小麦绿豆等基本生活品。从而用一个空头头寸（short position）抵消我们的多头头寸（long position）&lt;/div&gt;
&lt;div&gt;b方案：鉴于中国期权市场(option market)还在模拟阶段，期权套期保值暂不讨论。&lt;a href="http://www.chinaoptions.cn/"&gt;&lt;font color="#00246e"&gt;http://www.chinaoptions.cn/&lt;/font&gt;&lt;/a&gt;&lt;/div&gt;
&lt;div&gt;c方案：建立一个衍生品交易市场，买入我们的远期合同的看跌期权（put option），防止物价下跌带来的损失。但该市场的形成和流动性不容乐观。&lt;/div&gt;
&lt;div&gt;根据最小方差法（minimum variance），套期保值率(hedge ratio) h*=&lt;span style="font-size:10.5pt;font-family:宋体"&gt;&lt;font color="#000000"&gt;ρ*&lt;span lang=EN-US style="font-size:10.5pt;font-family:'Calibri','sans-serif'"&gt; &lt;span style="font-size:10.5pt;font-family:宋体"&gt;σs/&lt;span style="font-size:10.5pt;font-family:宋体"&gt;σF.&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/font&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div&gt; &lt;/div&gt;
&lt;div&gt;时间有限，文章暂告一段落。&lt;/div&gt;
&lt;div&gt;版权所有，请勿转载。祝各位吃好喝好。&lt;/div&gt;&lt;/div&gt;&lt;img src="http://c.services.spaces.live.com/CollectionWebService/c.gif?cid=2749832995832634756&amp;page=RSS%3a+%e5%a4%a7%e5%9b%9b%e6%95%a3%e4%bc%99%e9%a5%ad%e7%9a%84%e5%a5%97%e5%88%a9%e6%9c%ba%e4%bc%9a%e5%92%8c%e9%a3%8e%e9%99%a9%e8%a7%84%e9%81%bf&amp;referrer=" width="1px" height="1px" border="0" alt=""&gt;&lt;img style="position:absolute" alt="" width="0px" height="0px" src="http://c.live.com/c.gif?NC=31263&amp;amp;NA=1149&amp;amp;PI=73329&amp;amp;RF=&amp;amp;DI=3919&amp;amp;PS=85545&amp;amp;TP=xnrio.spaces.live.com&amp;amp;GT1=xnrio"&gt;</description><comments>http://xnrio.spaces.live.com/Blog/cns!26295E8A5C409D84!1818.entry#comment</comments><guid isPermaLink="true">http://xnrio.spaces.live.com/Blog/cns!26295E8A5C409D84!1818.entry</guid><pubDate>Mon, 22 Oct 2007 15:19:06 GMT</pubDate><slash:comments>3</slash:comments><msn:type>blogentry</msn:type><live:type>blogentry</live:type><live:typelabel>Blog entry</live:typelabel><wfw:commentRss>http://xnrio.spaces.live.com/blog/cns!26295E8A5C409D84!1818/comments/feed.rss</wfw:commentRss><wfw:comment>http://xnrio.spaces.live.com/Blog/cns!26295E8A5C409D84!1818.entry#comment</wfw:comment><dcterms:modified>2008-02-10T13:32:18Z</dcterms:modified></item><item><title>无处不在的无间道</title><link>http://xnrio.spaces.live.com/Blog/cns!26295E8A5C409D84!292.entry</link><description>&lt;div&gt;&lt;font face="Verdana, Geneva, Arial, Sans-serif" color="#ff0000" size=3&gt;&lt;strong&gt;这学期大大小小的考试考了不少，现在为止算是比较恶心得都结束了。本着娱乐大众的精神，发组图片。这组图本来是无意中拍得，事后发现居然可以组合成故事。&lt;/strong&gt;&lt;/font&gt;&lt;/div&gt;
&lt;div&gt;&lt;strong&gt;&lt;font color="#ff0000" size=3&gt;相关图片请参考相册中的“&lt;a href="http://xnrio.spaces.live.com/photos/cns!26295E8A5C409D84!293/?startingImageIndex=0&amp;amp;commentsExpand=0&amp;amp;addCommentExpand=0&amp;amp;addCommentFocus=0&amp;amp;pauseSlideshow=0" target="_blank"&gt;&lt;u&gt;无间道&lt;/u&gt;&lt;/a&gt;”(点击打开)&lt;/font&gt;&lt;/strong&gt;&lt;/div&gt;&lt;img src="http://c.services.spaces.live.com/CollectionWebService/c.gif?cid=2749832995832634756&amp;page=RSS%3a+%e6%97%a0%e5%a4%84%e4%b8%8d%e5%9c%a8%e7%9a%84%e6%97%a0%e9%97%b4%e9%81%93&amp;referrer=" width="1px" height="1px" border="0" alt=""&gt;&lt;img style="position:absolute" alt="" width="0px" height="0px" src="http://c.live.com/c.gif?NC=31263&amp;amp;NA=1149&amp;amp;PI=73329&amp;amp;RF=&amp;amp;DI=3919&amp;amp;PS=85545&amp;amp;TP=xnrio.spaces.live.com&amp;amp;GT1=xnrio"&gt;</description><comments>http://xnrio.spaces.live.com/Blog/cns!26295E8A5C409D84!292.entry#comment</comments><guid isPermaLink="true">http://xnrio.spaces.live.com/Blog/cns!26295E8A5C409D84!292.entry</guid><pubDate>Sun, 28 May 2006 00:00:06 GMT</pubDate><slash:comments>6</slash:comments><msn:type>blogentry</msn:type><live:type>blogentry</live:type><live:typelabel>Blog entry</live:typelabel><wfw:commentRss>http://xnrio.spaces.live.com/blog/cns!26295E8A5C409D84!292/comments/feed.rss</wfw:commentRss><wfw:comment>http://xnrio.spaces.live.com/Blog/cns!26295E8A5C409D84!292.entry#comment</wfw:comment><dcterms:modified>2008-02-10T13:48:43Z</dcterms:modified></item></channel></rss>