2007-06-10

全球SAS证书持有者姓名列表(中国才二十多人)

China      

Chen, Wangdong SAS Certified Base Programmer for SAS9
Chen, Zhi Yang SAS Certified Advanced Programmer
SAS Certified Base Programmer
Dong, Le SAS Certified Advanced Programmer
SAS Certified Base Programmer
Gao, Yan SAS Certified Base Programmer
Guo, Wei SAS Certified Base Programmer
Hao, Luo SAS Certified Base Programmer
Hao, Yun Ze SAS Certified Advanced Programmer
SAS Certified Base Programmer
He, Rong SAS Certified Base Programmer
He, Yulin SAS Certified Advanced Programmer
SAS Certified Base Programmer
Jiang, Cuiyu SAS Certified Base Programmer for SAS9
Jiang, Qing Jun SAS Certified Advanced Programmer
SAS Certified Base Programmer
Lai, Wai Ping Jenny SAS Certified Base Programmer
Li, Bo Yang SAS Certified Base Programmer
Li, Yanning SAS Certified Base Programmer
Liu, Yang SAS Certified Advanced Programmer for SAS9
SAS Certified Base Programmer for SAS9
Liu, Zhong SAS Certified Advanced Programmer
SAS Certified Base Programmer
Lu, Duowei SAS Certified Base Programmer
Lu, Yang SAS Certified Base Programmer
Lv, Yu Liang SAS Certified Advanced Programmer
SAS Certified Base Programmer
Ning, Pu SAS Certified Base Programmer for SAS9
Qin, Kui SAS Certified Advanced Programmer
SAS Certified Base Programmer
Sun, Wei SAS Certified Base Programmer for SAS9
Sun, Zhe SAS Certified Base Programmer for SAS9
Tan, Yuan Bin SAS Certified Advanced Programmer for SAS9
SAS Certified Base Programmer
SAS Certified Base Programmer for SAS9
Wang, Mei SAS Certified Advanced Programmer
SAS Certified Base Programmer
Wang, Qihui SAS Certified Advanced Programmer for SAS9
SAS Certified Base Programmer for SAS9
Wei, Qiuping SAS Certified Base Programmer for SAS9
Wu, Deyun SAS Certified Base Programmer for SAS9
Xu, Nan SAS Certified Advanced Programmer for SAS9
SAS Certified Base Programmer for SAS9
Xu, Xin SAS Certified Advanced Programmer
SAS Certified Base Programmer
Yu, Haomin SAS Certified Advanced Programmer
SAS Certified Base Programmer
Yuan, Yingqing SAS Certified Base Programmer for SAS9
Yuan, Yue SAS Certified Base Programmer
Zhang, Sunstone SAS Certified Base Programmer for SAS9
Zhang, Yunyuan SAS Certified Base Programmer for SAS9
Zhang, Zhikun SAS Certified Base Programmer for SAS9
Zhong, Xinrong SAS Certified Base Programmer
Zi, Lu SAS Certified Advanced Programmer for SAS9
SAS Certified Base Programmer for SAS9
全球SAS证书持有者姓名列表:
http://support.sas.com/certify/dir_ctry.html
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2007-06-05

Outsourcing Your Life外包你的生活

Outsourcing Your Life

Sending work offshore has transformed the U.S. economy. Now, some families are tapping the same approach for personal tasks, getting them done for a fraction of what they'd cost at home. Taking your to-do list global.
By ELLEN GAMERMAN

When David San Filippo decided to create a tribute video in honor of his sister's wedding, he could have gotten a recommendation from a friend or looked up video editors in the phone book. Instead, he did what big corporations have been doing for more than a decade: sent the work offshore.

On the Internet, Mr. San Filippo located a graphic artist in Romania who agreed to do the whole thing for $59. The result was a splashy two-minute video with a space theme and "Star Wars" soundtrack. It won raves at the wedding.

[Art]

Offshore outsourcing has transformed the way U.S. companies do business. Now, some early adopters are figuring out how to tap overseas workers for personal tasks. They're turning to a vast talent pool in India, China, Bangladesh and elsewhere for jobs ranging from landscape architecture to kitchen remodeling and math tutoring. They're also outsourcing some surprisingly small jobs, including getting a dress designed, creating address labels for wedding invitations or finding a good deal on a hotel room, for example.

Such "personal offshoring" is still new and represents a tiny fraction of the more than $20 billion overseas outsourcing industry. But management consultants and economists say it's likely to evolve into a larger niche as offshore workers identify the opportunities. Thanks to instant messaging, computer scanners and email attachments, any work that doesn't require meeting in person has the potential to be done overseas.

The approach relies on the same model that drives corporate outsourcing: labor arbitrage, or benefiting from the wage differential between U.S. workers and those in developing countries. In the U.S., tutoring services charge $40 to $60 an hour for math help. Some skilled tutors in India are paid $2 to $3 an hour. In India, $20 is enough to buy a week's groceries for two people.

WSJ.COM PODCAST
 
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Families and individuals are starting to outsource everything from tutoring to tax returns, says WSJ's Emily Gitter. Hear the podcast.
PERSONAL OFFSHORING: A TEST
 
Take a look at the results of the Journal's tests, and see examples of the revisions and edits often involved in the outsourcing.

Sending personal work offshore requires Internet proficiency, and some patience as well. Though a few firms have begun tailoring their services to consumers, most deal primarily with businesses. Tapping this bargain work force means knowing about the online bazaars where workers abroad compete to bid for small projects.

Some big free-lancing sites include Elance.com, Guru.com and Rentacoder.com . In a recent study on the growth of offshoring services to small businesses and homes, market researcher Evalueserve found more than 90 such online marketplaces, with 500,000 vendors from low-wage countries using them.

Consumers must also be able to recognize when a routine task can be done digitally, and across time zones. Earlier this year, Dan Frey went in search of an artist to illustrate a children's book his mother had written for the grandkids about her life growing up in New York City. He thought about finding a student from a local art school, but then it dawned on him that he could outsource it without leaving his house. The job didn't necessarily require a face-to-face meeting -- he could just email the draft.

He logged on to Guru, which he'd learned about from computer programmer friends who had used it for work. Within a week, 80 bids had come in from countries like Lebanon, Ukraine and Malaysia. To narrow the field, he had 10 finalists send him sample drawings depicting a young girl. He rejected the illustrators who didn't follow instructions and sent pictures of animals instead, and he bypassed an Indian firm that seemed big and impersonal, offering him a "project manager" to oversee a staff of artists.

The woman he finally hired lives in the Philippines. He says her drawings, styled after Japanese anime, were more cheerful than other entries, and he was impressed by her polished portfolio. She offered to do 25 drawings for $300 -- what some others wanted for a single illustration. "I was kind of amazed at how easy it was," says the 36-year-old sales and marketing consultant. He says his mother was "overwhelmed" when she saw the finished product.

[Megan Oyler]
[Raji Suresh]
Offshore: Megan Oyler, top, sits at her computer in her home in North Carolina, while Raji Suresh, bottom, tutors her in math and reading from her home in Chennai, India.

It isn't always easy to evaluate a vendor. Language gaps can lead to misunderstandings, and if projects involve revisions, they could take more time -- and cost more in long-distance bills -- than they're worth. When reporters tried outsourcing personal tasks, they were offered a range of prices, making it difficult to know what they were getting (see adjacent chart for more on our test).

Janice Harrelson says she was ultimately satisfied with the Web site designed for her by Virtuoso Online, a firm in India. But she says cultural gaps initially hampered the designers' ability to strike the right tone on a site devoted to her Christian beliefs. The theme she wanted to emphasize was the bond that believers have with Jesus Christ -- a concept known as being "the bride of Christ." The Indian technicians posted pictures of women in wedding gowns.

"They were beautiful, but not what I had in mind," says the real-estate manager from North Carolina, who went through a few more revisions before the site was completed with images of a waterfall and a crown. The total bill came to $250 -- half the price she was quoted by a local Web designer.

Global Solutions India, in Mumbai, is one of the firms now adding consumers to its primary business of corporate graphic design and web development. Americans never used to call for small personal projects four years ago, but now the company says about 20% of all inquiries comes from individuals in the U.S. -- some of whom discover the company after seeing its occasional banner ads on sites like Google. The jobs are handled by a six-person team making $1,000 to $1,500 each per month. They work in a small office with anything from Hindi pop to Shania Twain playing in the background.

Rajesh Shah, the 27-year-old president of Global Solutions, tells his clients to call him anytime, even on his cellphone at 3 a.m. He sometimes works 16-hour days, and he lives a seven-minute walk from the office so he can get there fast. "I normally don't turn down work," says Mr. Shah, who often sends work to new customers before they've paid him. The most prominent feature of the office is a statue of the elephant-headed Lord Ganesh, worshiped as a god of wisdom and a remover of obstacles.

Outsourcing has already trickled down from big corporations to small businesses, which now send everything from secretarial work to graphic design to back-end legal research overseas. Outsourcing revenue from small businesses was more than $250 million in fiscal 2006, and is likely to grow to more than $2 billion by 2015, according to Evalueserve. As offshore providers gain proficiency in dealing with smaller clients, individuals are a logical next step. "We're seeing the very tip of a very big trend," says Peter Allen, partner and managing director of TPI, a Houston management consulting firm that specializes in outsourcing.

Glen Hackler says he was inspired to try outsourcing for his personal income taxes after he hired an offshore firm to do the bookkeeping for his business. The owner of a Web site that sells RV parts, Mr. Hackler came across FinTax Experts, part of a larger outsourcing firm based outside New Delhi, during a Web search. He says FinTax saved his business several hundred dollars in accounting work.

This year, he decided to have FinTax do his personal income taxes, too. He emailed his earnings and scanned receipts, getting a completed return within two days. The firm charged him about $50, a third of what H&R Block charges for an average return. Since the return wasn't prepared by a U.S. accountant, he says, he filed it as "self-prepared," but he says he got all the deductions his CPA used to find him. "They seem to know all the laws here."

Most consumer outsourcing takes place on auction sites like Guru. In 2000, the Pittsburgh-based company launched an online job board. Its infrastructure is like eBay, with a ratings system so buyers can feel more comfortable choosing a vendor. Guru has an escrow system to avoid handing over a credit-card number to a stranger. Vendors pay a listing fee of roughly $10 to $80 a month, and Guru gets 6% to 9% of every successful deal. Customers aren't charged to list projects for which they're seeking bidders.

Guru says it is taking steps to make the process more user-friendly, with additions it says are likely to appeal to consumers. A new feature will let vendors post short videos of themselves and their offices.

Another site, Elance, is starting up "Elance University," a mandatory online course for vendors that will instruct them on how to attract customers and improve their customer-service skills. Elance just doubled the size of its customer-service team as it gets more calls from people who aren't Internet whizzes. "We're just coming out of the early adopter phase," says Fabio Rosati, CEO of Elance. "We're starting to see more and more mainstream people ... people that are not Silicon Valley technofreaks, that are not online entrepreneurs."

As evidence that more consumer tasks will wind up going overseas, economists point out that it's already happening more than Americans might realize. Many U.S. service businesses now routinely subcontract some portions of their work offshore. An architect designing a residence, for instance, might send drawings overseas to be turned into computer-generated renderings.

Some labor experts are skeptical that this kind of outsourcing will ever go beyond a small group of enthusiasts. One issue is being able to trust a worker thousands of miles away with projects of a personal nature.

And though it's hardly the political hot-button that's provoked industries like manufacturing and information technology, it is bringing consumers face to face with some thorny issues. Many are stumbling into their own personal-life versions of corporate responsibility in terms of working conditions and fair wages.

That has become an issue for the Oyler family of Fayetteville, N.C. Nitza Oyler raves about her stepdaughter's tutor, Raji Suresh, whom she hired through TutorVista, an online tutoring service based in Bangalore, India. Ms. Oyler says after shopping around, she couldn't find anyone else to beat the price: $99 a month, compared with the roughly $40-an-hour quote she got from Sylvan Learning Center. Last fall, her daughter Megan began two-hour sessions five days a week, using a digital tablet, instant messaging and a headset to communicate with her tutor.

Ms. Suresh, has grown close with the Oylers. She frequently tells Megan she loves her and says Megan always replies, "I love you more." But earlier in the spring, the Oylers began to worry about Ms. Suresh, who wakes up at 3:30 a.m. so the 12-year-old can do her homework after dinner in North Carolina -- and works a full day after that. "I felt bad," says Ms. Oyler.

When daylight savings time kicked in, Ms. Oyler decided that instead of making Raji get up even earlier to accommodate the new hours, Megan would start her homework an hour later, at 7 p.m., giving Raji some extra sleep. "That was very considerate," says Ms. Suresh, who lives with her husband and two sons in a three-bedroom apartment in Chennai.

Architects, accountants, landscape designers and other professionals say it's too soon to tell if this kind of outsourcing poses a threat to their business. But American free-lancers say they're getting hit. To compete on auction sites, U.S. vendors are either positioning themselves as experts so they can charge more, or lowering their bids. "People are undercutting each other to remain competitive," says Jia Ji, who manages community relations at Guru.

Tanisha Coffey, who does small writing jobs through her Atlanta-area company, Scribe, Etc., says larger offshore firms with several dozen employees routinely win contracts she's going after because of their low prices. While she asks 50 cents a word for a long article, she says some offshore firms charge $3 for the whole thing. "I can't work for that," she says.

Actress Michele Greene, known for her role as Abby on "L.A. Law," has found a way to outsource one of Hollywood's most entrenched jobs: the personal assistant. She contracted India-based concierge service GetFriday last year. Ms. Greene says she pays $150 a month for about 20 hours of service. That's about $2 less per hour than her L.A. assistants charged.

Ms. Greene says her offshore assistant has been a big help while she works on her second young-adult novel and a country-folk CD in addition to acting projects. Along with paying her bills and booking her flights, her assistant has given her tips on Bollywood movies and Indian food. His recipe for garbanzo beans with eggplant and peppers has become one of her signature dishes. It's a huge improvement over the unemployed actors who typically fill these jobs in Hollywood, she says: "They'd screw up everything you'd ask them to do."

--Tariq Engineer and Binny Sabharwal contributed to this article.

Write to Ellen Gamerman at ellen.gamerman@wsj.com

[Personal Offshoring chart]
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租售比“失灵”

 租售比"失灵"
2007-5-14  经济观察报
发表评论

          本报记者 陈文雅 张庆源 北京报道
  多年前就开始关注楼市 "租售比"的清华大学社会学系教授孙立平,最近在 《SOHO》小报发表了一篇文章,表示自己向一个房地产业的朋友 "认输"了。
  几年前,孙立平和一个搞房地产的朋友常争论北京房价的走势问题。孙认为,北京房价的上涨不可能持续太久,因为当时北京房价在不断攀升,而租金价格却在不断走低,甚至低于10年前的水平。他的朋友说: "我说不出什么系统的道理,但我坚信北京的房价会不断走高。"
  北京最近几年的房价走势让孙立平感到,自己的 "租售比"理论没派上用场。
  不过,还是有很多人不这么看。
  五一前后, "租售比超警戒线"消息迅速传遍了各地媒体及主要门户网站, "楼市高烧"、 "买房风险剧增"的标题纷纷刺激着公众的眼球。
  追根溯源,是4月底中国社会科学院城市发展与环境研究中心发布的2007房地产蓝皮书。这个名为 《中国房地产发展报告NO.4》的研究成果指出, "根据我爱我家、链家地产等房产经纪公司的统计数据,北京、深圳、上海、杭州等城市中心城区的 '租售比'已经高达1∶270至1∶400,房价虚高倾向明显。"
  "租售比"是指每平方米使用面积的月租金与每平方米建筑面积房价之间的比值。从经济学理论来看,如果房价偏离租金回报率过远,意味着价值被高估,市场风险加大。市场经济发达国家或地区的经验数据也表明,房地产市场平稳发展时期,租金收入与房价之间确实存在一种正相关关系。
  该蓝皮书的作者之一、社科院城市中心研究人员单菁菁表示,从发达国家或地区的房地产市场规律看,一般房屋租售比的警戒线是1:200,当超出这一比例时,表明市场存在风险。 "1:200"的警戒线,也是许多媒体、经济学家、房地产业内人士在讨论房地产泡沫和风险问题时,常常引用的一个标准。
  但蓝皮书的另一位作者叶红光则认为,在上海、北京、深圳等核心城市,租售比高于1∶240,可以认定为房地产投资价值较高,但租售比低于1∶360则可以认为房地产价值已经高估,存在过度投机。介于1∶360~1∶240之间,可以认定为房地产估值处于合理区间。
  叶红光引用 "国内某知名房地产中介机构的研究",指出2006年底北京、上海、深圳高档住宅的租售比分别在1∶270、1∶400、1∶320左右, "北京、深圳两个城市的高档房价均介于1∶360~1∶240之间,基本可以认定为房地产估值处于合理区间,而上海的租售比低于1∶360,显示出上海高档房地产价格已经高估。"
  同一本书里两篇文章的不同衡量标准使人们心生疑惑:有没有一个权威的 "警戒线"?这个 "国际经验"适用于中国现状吗?参考价值有多高?
  衡量标准
  对于 "租售比"一词,业内并不陌生。
  2004年,还在清华大学房地产研究所读博的谢岳来,在导师刘洪玉的指导下完成了一项《基于房价租金比的京沪穗杭房价研究》。研究中,谢岳来发现,购房自住的 "投资回报率"一般不应低于当时的商业性住房抵押贷款利率;但也不应高出太多,以住房抵押贷款利率为基准利率,考虑投资风险补偿和租金上涨因素,租金收益率(即房价租金比的倒数)应比抵押贷款利率高1%~3%。按照商业性住房抵押贷款利率水平5.04%,谢得出结论,2004年中国合理的房价租金比应为 150~200∶1,重点城市的上限可略加提高。
  通过实证调研,谢岳来计算出2004年北京、广州、上海、杭州四个城市房价租金比分别为177∶1、194∶1、261∶1、286∶1。据此得出的结论是,北京、广州的房价租金比处在合理范围,上海、杭州的房价租金比已经偏高。
  这一研究报告中的 "房价租金比"概念,即相当于 "租售比"公式的反比。
  2005年和2006年,哈继铭率领的中国国际金融公司研究部团队,又根据 "购房资金成本/租金比率"和 "月供/租金比率"的数据分析,两度提出了 "买房不如租房"的口号。根据2006年和2005年数据的对比分析,哈继铭还认为,2006年房地产的总体健康状况有所恶化,买房更加不如租房。其中的主要原因是房价涨幅一直高于租金涨幅,房价偏离租金所反映的投资收益回报点价格越来越远。
  在社科院蓝皮书公布以前,北京链家地产也在今年1月底提出过相同的观点。链家地产的数据表明,2006年北京市一居室普通住宅的售价租金比在242:1;两居室售价租金比在280:1;三居室售价租金比为 286:1。链家地产的分析报告表明,2006年北京的二手房售价租金比已经接近国际公认的警戒线;这种状况也为市场传递了一个需要警惕的信号。
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  北京中原三级市场研究部认为,房产租售比的变化表明,买房的投资收益率在下降,后市投资者应当更加谨慎。参考价值
  虽然不少研究人员早已敲响房价泡沫的警钟,但从近两年中国楼市的表现来看,几个重点城市房价依然在高歌猛进,尤以深圳、北京等地为甚。国家发改委固定资产投资公司公布的一季度70个大中城市房屋销售价格指数显示,一季度新建商品住房销售价格同比涨幅最快为深圳,达10.7%,长沙同比上涨10.1%,北京同比上涨9.9%。
  合理的"租售比"或者"房价租金比"究竟是多少?中国的房地产泡沫真的已经面临破灭了吗?
  "房产的租售价格比是有效地预警房地产投资过热的工具之一,但它仅是辅助手段,房价的上涨受多种因素的影响,人口的增长,住房建筑成本的增长,银行的低利率等。而且这个警戒线指标所在水平,也不会是简单的1∶200。"21世纪不动产研究部一位海归分析师表示,租售比应该就每个国家、城市的当地实际情况作不同考量。
  这位分析师将美国与中国的房地产市场作了比较。以链家提供的租售比数据为准,按照美国租售价格比的计算方法——— 住房价格除以全年租金,2006年北京一居室普通住宅的租售价格比为1∶20.21;两居室普通住宅的租售价格比为1∶23.32;三居室普通住宅的租售价格比为1∶23.52。
  而根据美国A&M大学经济学家阿那利(Anari)博士的一个研究报告,在美国此轮房价快速上升周期中段的 2003年,美国39个主要城市的平均租售价格比为1∶22.04,几大重点城市的租售比都在30以上,如华盛顿为1∶31.43,纽约为 1∶35.16,洛杉矶为1∶39.74,旧金山更是高达1∶46.84。
  对比北京的租售比数据,仅与2003年全美平均租售比持平,而远低于美国几个重点城市的租售比。"泡沫是有,但还没达到非破不可的地步。"4月份,这位分析师在北京进行的一次实地调查中发现,售楼处排队、抢号的现象仍然很普遍,尤其是黄金地段的小户型房产。"至于五一黄金周期间的成交量下降,可能部分和开发商捂盘有关系,因为市场普遍预计五一之后会有一拨新的销售高峰。"
  孙立平就"租售比"失灵的原因作了分析。他表示,自己当年之所以判断有误,是因为对外来资金涌入北京估计不足。每年毕业留京的学生、来京寻求工作机会的"北漂",以及这些年轻人在北京安家落户后从老家接过来的父母,都形成了购房的巨大需求。
  孙立平进一步分析,"租售比"失灵的根本原因,则是社会各个角落的资源向有限的几个大城市积聚。若干个特大城市集中了全国主要的经济、政治、文化资源,甚至也集中了生活中最主要的机会。"如果说今天中国的房地产有问题,那就不仅仅在于房地产业本身,而在于它背后的社会现状。"他说。
--
最新奇有趣的新技术、科幻、社会学信息:
http://www.qixianglu.cn
forcode科幻小说《抽水马桶的秘密》:
http://www.cmfu.com/showbook.asp?Bl_id=60008

2007-06-04

070604北大社会学暑期课程表下载(图)

序号 课程名称 学分 总学时 周学时 任课教师 课程开始 课程结束 听课人数
1 应用社会统计方法 2 36 6 周雪光 6月22日 8月1日 50
2 社会学量化研究案例赏析 2 36 6 吴晓刚 6月29日 8月2日 50
3 纵贯和多层数据分析 2 36 6 彭玉生 6月25日 8月1日 50
4 社会学实证研究设计 2 36 6 国光 6月22日 7月28日 50

周日期 教师                           上课时间 教室
 
6.18-6.24 周雪光         上午 上午   理教110
6.25-7.1 彭玉生 下午   下午         一教202
国光 上午   上午         一教202
7.2-7.8 周雪光         上午 上午   理教110
吴晓刚   上午   上午       理教110
彭玉生 下午   下午         理教110
国光 上午   上午         理教110
7.9-7.15 周雪光         上午 上午   理教112
吴晓刚   上午   上午       理教112
彭玉生 下午   下午         理教118
国光 上午   上午         理教118
7.16-7.22 周雪光         上午 上午   理教112
吴晓刚   上午   上午       理教112
彭玉生 下午   下午         理教118
国光 上午   上午         理教118
7.23-7.29 周雪光         上午 上午   理教112
吴晓刚   上午   上午       理教112
彭玉生 下午   下午         理教118
国光 上午   上午         理教118
7.30-8.5 周雪光         上午 上午   理教112
吴晓刚   上午   上午       理教112
彭玉生 下午   下午         理教118
国光 上午   上午         理教118

课程表图片下载:
http://picasaweb.google.com/woodphone/Pku

--
最新奇有趣的新技术、科幻、社会学信息:
http://www.qixianglu.cn
forcode科幻小说《抽水马桶的秘密》:
http://www.cmfu.com/showbook.asp?Bl_id=60008

2007-06-03

开源数学软件

 
 

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开源数学软件

via 煎蛋 by maple on Jun 03, 2007

Mathematica、Maple、Matlab(3M) 几乎还是不可替代的,但如果你是个疯狂的开源拥踅,不妨尝试这里介绍的三款开源数学软件:在计算机代数系统堪与 Maple 相比的 Maxima,在矩阵运算方面与 Matlab 极为相似的 Scilab,以及在统计数学表现出色的 R。使用这些软件还有一个好处是他们的文件格式是开放的,除去了原来在 3M 之间转换的麻烦。

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