Showing posts from 2007

Probability distribution

A calculator manufacturer checks for defective products by testing 3 calculators out of every lot of 12. If a defective calculator is found the lot is rejected.

a) Suppose 2 calculators in a lot are defective. Outline two ways of calculating the probability that the lot will be rejected. Calculate this probability

Do I use the probability distribution here? This question is a hypergeometric distribution

b) The quantity control department wants to have at least 30% chance of reject lots that contains only one defective calculator. Is testing 3 calculators in a lot of 12 sufficient? If not how would you suggest they alter their quality control techniques to achieve this standard? Support your answer with mathematical calculations

a = 2 b = 10 n = 12 r = 3

nohup command

$ nohup sleep 400 & <== command
[1] 7026
$ Sending output to nohup.out

ctrl + d
$ There are running jobs.
ctrl + d

$ ps -ef| grep user6
user6 7026 1 0 15:52:03 ? 0:00 sleep 400 <== Running!!
user6 7049 7029 14 15:53:00 pts/tg 0:00 ps -ef
user6 6769 6768 0 14:12:12 pts/tc 0:00 -sh
user6 7050 7029 3 15:53:00 pts/tg 0:00 grep user6
user6 7029 7028 0 15:52:38 pts/tg 0:00 -sh

Oh.... Proposals.

I have received many proposal from the most famous global companies.

But, i have no money for airplane tickets. XD

It’s bitter cold.

It’s bitter cold.
November is my coldest month.
Sometimes it snows heavily in my mind.

Because, Christmas is drawing near.
(Do you understand what I’m saying?)

Meeting with Hbase Company, Powerset

While there was not much time for fun, my hosts at NHN (Paul Sung and Ed Yoon) picked me up at the airport and took me out to a meal at a traditional Korean restaurant......

I had a good time. :)

Introducing Android

FT: South Korea Approves Samsung Probe

SEOUL, South Korea (AP) — South Korea's National Assembly passed a bill Friday demanding an independent investigation into allegations of bribery at the Samsung Group conglomerate.

The bill was to go to President Roh Moo-hyun for final approval. His office has said he may veto it because state prosecutors have already launched a probe into the scandal at the country's largest industrial group, which includes Samsung Electronics Co.

The single-chamber legislature, however, can override a veto if a majority of its 299 members attend a floor vote and two-thirds of them vote in favor.

A total of 155 lawmakers voted for the bill Friday, 17 cast ballots against it and 17 abstained. A total of 110 lawmakers were absent and did not vote.

The legislation calls for Roh to name an independent counsel to delve into allegations against Samsung, including that it operated slush funds to bribe influential figures such as prosecutors, judges and government officials.

Other accusations include clai…

racial discrimination

Distrust of foreigners shading into racism !!
I was a victim of their racism.

Today, my anger gauge 8/10.

My anger gauge 8/10.
8/10 RPM is a red zone.

Week in review: Go go Google

Google is big and getting bigger.

Google's shares traded over the $700 mark this week, marking a new first for the Internet giant. Just a little more than three weeks ago, Google shares passed the $600 mark and analysts were speculating its shares could climb as high as $700 within the next year. Apparently, it's been a quick year.

The stock was up following reports that Google is in "serious discussions" with Verizon Wireless to put its mobile "GPhone" software on Verizon phones. For months, people have been speculating about the GPhone.

Most people believe that it's not a specific phone, but is more likely an operating system or software that integrates many of Google's mobile services, such as Web search, Gmail, YouTube, and Google Maps, onto phones made by existing handset makers. But more than simply integrating Google services onto handsets, the new Google mobile operating system is believed to be an open platform on which application develope…

Life is a game of probability

It was a bitter strife between the two rivals.

Top 10 Search Properties WorldWide

NHN corporation is 5th.

Similar Query Languages.

Google's Sawzall :
Y!'s Pig :
Microsoft LINQ :

But, i don't like these.

Y!'s platform for nimble universal table storage

Nuggets :
- No plans to open source.
- The implemented basic relational operators do not allow for ad-hoc analysis and bulk processing. (use pig, hadoop instead)
- They have a SQL-like language but it’s very basic. (no support for joins, aggregation, etc.)
- It has active participation of yahoo infrastructure team.

Oh, God. Craig Venter

AN AMERICAN researcher has claimed he is just weeks away from realising a science-fiction dream: the creation of artificial life.

Craig Venter, a controversial and flamboyant DNA scientist, said he is about to produce a synthetic living cell that is capable of reproducing itself.

If Venter delivers on his bold promise it will rank as one of the greatest scientific breakthroughs of recent years. It could open the door to a new generation of artificial life forms designed to tackle everything from disease in humans to environmental crises.

But while the Maryland-based scientist has caused excitement in scientific quarters, he has also prompted a renewed ethical debate on the acceptable limits of research into the building blocks of life. As well as concern over "playing god", some experts fear the creation of a new species could have safety implications.

Chromosomes are at the centre of Venter's breakthrough. In t…

Sun Patches Critical Java Bugs

Sun Microsystems Inc. patched 11 vulnerabilities in the Windows, Linux and Solaris versions of its Java Runtime Environment and Java Web Start Wednesday, including several rated critical by outside researchers.

The fixes to Java Runtime Environment (JRE) 1.3.1, 1.4.2, 5.0 and 6.0 plug holes that attackers could use to bypass security restrictions, manipulate data, disclose sensitive information or compromise an unpatched machine. Among the JRE bugs, Sun said in several security advisories, are two that allow attack code from malicious sites to make network connections on machines other than the victimized computer. One possible result, according to a paper by several Stanford University researchers that was cited by Sun: circumvented firewalls.

Other vulnerabilities in JRE and Java Web Start, a framework that lets Java-based applications launch directly from a browser, could be used by attackers to read local files, overwrite local files and hide Java-generated warnings.

Although Sun doe…

conversazione with Zaheda

location : Google Seoul Office.
subject : Open Source Program and Software

6:30~7:00: dinner, reception.
7:00~8:30: conversazione.

Zaheda Bhorat,
Open Source Programs Manager, Google, Inc.

Zaheda Bhorat is Open Source Programs Manager at Google, Inc., working on projects to promote the spread of open source software both inside and outside Google. She has been responsible for programs like the Google Summer of Code, Google-O'Reilly Open Source Awards and is driving Google's support of open standards such as Open Document Format (ODF).

She has more than 15 years of experience in technology and software with expertise in open source software, web 2.0, and community building. Before joining Google, Zaheda was responsible for the open source community at while at Sun Microsystems. She built the first open source marketing community with volunteers to support the office application, and the first native language community which now boasts 100 languages. Prior this Zah…

Google Adsense

My Cigars cost.

Types of JDBC technology drivers

1. A JDBC-ODBC bridge provides JDBC API access via one or more ODBC drivers. Note that some ODBC native code and in many cases native database client code must be loaded on each client machine that uses this type of driver. Hence, this kind of driver is generally most appropriate when automatic installation and downloading of a Java technology application is not important. For information on the JDBC-ODBC bridge driver provided by Sun, see JDBC-ODBC Bridge Driver.

2. A native-API partly Java technology-enabled driver converts JDBC calls into calls on the client API for Oracle, Sybase, Informix, DB2, or other DBMS. Note that, like the bridge driver, this style of driver requires that some binary code be loaded on each client machine.

3. A net-protocol fully Java technology-enabled driver translates JDBC API calls into a DBMS-independent net protocol which is then translated to a DBMS protocol by a server. This net server middleware is able to connect all of its Java technology-based cl…

Y!'s Pig, Stepping into Apache Incubator.

I think we(Hbase, Hbase Shell) must try harder. -__-a

Shrek "Songpyeon"

This is a rice-and-mugwort cake.

Korean traditional holiday "Chuseok" (September, 22 ~ 30)

Chuseok is celebrated on the 15th day of the eighth lunar month as the important traditional holiday. It is a celebration of the harvest and a thanks giving for the bounty of the earth. Most People visit their hometowns to be with family and enjoy a special food “Songpyeon” and wish to realize their desire viewing full moon in the evening.

- I'll go under the water for a while. Bye Bye~

I got a job promotion!! :D

Working StiffCrime SyndicateCEOGodfatherPresidentCapoVice PresidentBossPartnerRegional BossGeneral Manager Under BossManagerMade * Assistant Manager * SoldierTeam LeaderButton ManCorporate DronEnforcerPeonDealerInternThug

Not only does my job ROCK, but I will! Woo!
Ps. Thanks, joo. My konglish was fixed. :)

Trademark issues

The name Altools will no longer be used due to trademark issues.
ALTools PC Utilities -

-_______-a go well.
I think altools was an unfashionable name.

ISWC + ASWC 2007 (November 11.15) in Korea

Ron Kaplan (CTO, PowerSet)
Chris Welty (Research Scientist, IBM)

i'll register. :)

Google disk failures paper

Joy of Apache open software development.

Last night, I have received proposal to be interviewed from the very most popular technology company's Lab.

I wanna go global!
But, The Far Country makes me thinkful that it was troublesome for me to invest the time. also, my open source project has just began.

Now, i started falling in love with open source.

Mind conflict. -0-

Growing number of Hbase Shell Member.

Jaesun Han(Post Doctor/Ph.D KAIST) just join us soon.
In addition, Volunteers and Comments are always welcome to join our Project.

Hbase ShellHbase Shell PlansHbase RDF

ApacheCon US 2007 Program


I added some example of patriotism to Hbase Shell wiki page.

Hbase > SELECT 'studioName:YoungGu Art'
        --> FROM movieLog_table
        --> WHERE row = 'D-War';


D-War (also known as Dragon Wars) is a 2007 South Korean film directed by Shim Hyung-rae. It is a fantasy-action film that is reportedly the biggest budgeted South Korean film of all-time. -- wikipedia.

Monopoly Castle 'Naver'

At least we, the people of the korea, still don’t know well about Google Search Engine, Google's power. When i introduced a '' to my sister, she said " Is this your new homepage? I think you need a graphic design help. "

But, ... i love google's massive computing engine.
and i wanna know their secrets.

Related News : Can Google Be Beat? They Already Have Been in South Korea.

Deductive reasoning joke.

people = eat + sleep + work + play
pig = eat + sleep
people = pig + work + play
people - play = pig + work

Result : people who dunno play = working pig
(pig who know go to work)

Using scp without password login

$ ssh-keygen -t dsa Generating public/private dsa key pair. Enter file in which to save the key (/home/udanax/.ssh/id_dsa): Created directory '/home/udanax/.ssh'. Enter passphrase (empty for no passphrase): Enter same passphrase again: Your identification has been saved in /home/udanax/.ssh/id_dsa. Your public key has been saved in /home/udanax/.ssh/ The key fingerprint is: blah~ blah~ $ _
and, then

$ cat ~/.ssh/ | ssh id@host "cat >> .ssh/authorized_keys" password: enter the password

P/E ratio

After finding the price of a particular stock, usually the next number everyone looks at is the P/E ratio.

P/E is the ratio of a company’s share price to its per-share earnings.

A P/E ratio of 10 means that the company has 1 of annual, per-share earnings for every 10 in share price. (Earnings by definition are after all taxes etc.)

A company’s P/E ratio is computed by dividing the current market price of one share of a company’s stock by that company’s per-share earnings. A company’s per-share earnings are simply the company’s after-tax profit divided by number of outstanding shares. A company that earned 5M last year, with a million shares outstanding, had earnings per share of 5. If that company’s stock currently sells for 50/share, it has a P/E of 10. At this price, investors are willing to pay 10 for every 1 of last year’s earnings.

P/Es are traditionally computed with trailing earnings (earnings from the past 12 months, called a trailing P/E) but are sometimes computed with leading e…

Spiders Create Giant Web

(AP)Updated: 2007-08-31 14:31

WILLS POINT, Texas (AP) — Entomologists are debating the origin and rarity of a sprawling spider web that blankets several trees, shrubs and the ground along a 200-yard stretch of trail in a North Texas park.
Officials at Lake Tawakoni State Park say the massive mosquito trap is a big attraction for some visitors, while others won't go anywhere near it.
"At first, it was so white it looked like fairyland," said Donna Garde, superintendent of the park about 45 miles east of Dallas. "Now it's filled with so many mosquitoes that it's turned a little brown. There are times you can literally hear the screech of millions of mosquitoes caught in those webs."
Spider experts say the web may have been constructed by social cobweb spiders, which work together, or could be the result of a mass dispersal in which the arachnids spin webs to spread out from one another.
"I've been hearing from entomologists from Ohio, Kansas, British …

Girls' Generation, Visit the NHN corp. !!!

But, I don't know why visit us. -_-a

Girls' Generation, also known as SNSD, the acronym of So Nyeo Shi Dae, is a large nine member girl group formed in 2007 by SM Entertainment. The group debuted on SBS Inkigayo on August 5, 2007, performing their first single, "Into the New World". The members are (in order of official announcement) YoonA, Tiffany, YuRi, HyoYeon, SooYoung, SeoHyun, TaeYeon (the leader), Jessica, and Sunny. They are said to be a multilingual group. Aside Korean, they are said to know English, Chinese, and Japanese. Both Jessica and Tiffany have been raised in America, HyoYeon traveled to Beijing in 2004, and SooYoung started out in the Japanese entertainment business first in the girl group Route-O in 2004.

The World’ s Largest Matrix Computation

The World's Largest Matrix Computation One of the reasons why Google is such an effective search engine is the PageRank™ algorithm, developed by Google's founders, Larry Page and Sergey Brin, when they were graduate students at Stanford University. PageRank is determined entirely by the link structure of the Web. It is recomputed about once a month and does not involve any of the actual content of Web pages or of any individual query. Then, for any particular query, Google finds the pages on the Web that match that query and lists those pages in the order of their PageRank.Imagine surfing the Web, going from page to page by randomly choosing an outgoing link from one page to get to the next. This can lead to dead ends at pages with no outgoing links, or cycles around cliques of interconnected pages. So, a certain fraction of the time, simply choose a random page from anywhere on the Web. This theoretical random walk of the Web is a Markov chain or Markov process. The limiting …

Yahoo! sued over disclosure of Chinese citizens' identities

Mark Tran
Tuesday August 28, 2007
Guardian Unlimited

Photograph: Getty Images

The internet company Yahoo! has become embroiled in a legal battle with a human rights group over a decision to disclose the identity of Chinese citizens, leading to their arrests.
Yahoo! is being sued by the World Organisation for Human Rights, based in Washington, on behalf of Wang Xiaoning and his wife, Yu Ling.

He is serving a 10-year prison sentence for advocating democratic reform in articles circulated on the internet.

The group is also suing Yahoo! on behalf of Shi Tao, a journalist serving a 10-year sentence for sending an email summarising a Chinese government communiqué on how reporters should handle the 15th anniversary of the 1989 crackdown on the pro-democracy movement.

The suit alleges that these people - and others yet to be identified - were tortured or subjected to inhumane treatment at the hands of the Chinese authorities because of information that Yahoo!, Yahoo! China or, a Chinese …

See my habitat through Google Earth
"Bundang First Tower" lat=37.383034, lon=127.121532

Bottom Line for Successful Collaboration

Remarks by Mitch Friedman, Director, Conservation Northwest
to the American Forest Resource Council
at their Annual Conference, April 18, 2006

Visit Grist for Mitch's full article on this important issue

Ladies and Gentleman,

As flattered as I am by Will’s kind words, I want the record to note that I attended today under assertions that this event was just some folks gathering for a round of golf. I’ve taken note of the nearest exits and am wearing running shoes.

Actually, it was with pleasure that I accepted the invitation to sit up here with Will and Russ, both of whom I think very highly of, to see if I could get a rise out of you all.

Let's acknowledge up front that there are a lot of battle scars in the room today. I have no intention of living down my past, even if you would allow me. I was among the very first tree-sitters and organized the first spotted owl protests. My organization has long been among the list of usual suspects on appeals and litigation. The fact is that mos…

Job life story

I do a job life with the bad team unit together.
He is a clever in a superficial way and always snatches my business result.

But, only the Hbase Shell will be beautifully successful.

Huge Hole Found in the Universe

The universe has a huge hole in it that dwarfs anything else of its kind. The discovery caught astronomers by surprise.

The hole is nearly a billion light-years across. It is not a black hole, which is a small sphere of densely packed matter. Rather, this one is mostly devoid of stars, gas and other normal matter, and it's also strangely empty of the mysterious "dark matter" that permeates the cosmos. Other space voids have been found before, but nothing on this scale.

Astronomers don't know why the hole is there.

"Not only has no one ever found a void this big, but we never even expected to find one this size," said researcher Lawrence Rudnick of the University of Minnesota.

Rudnick's colleague Liliya R. Williams also had not anticipated this finding.

"What we've found is not normal, based on either observational studies or on computer simulations of the large-scale evolution of the universe," said Williams, also of the University of Minnesot…

Lee, Moving to JBoss a division of Red Hat

A few days ago, he's leaved NHN corp.
I heard he was moving to JBoss a division of Red Hat.
I feel enviable. -0-

Trustin Lee is a member of the Apache Software Foundation, a PMC (Project Management Committee) chair, committer, and the founder of the Apache MINA project, who is involved in various open source projects. He has been developing high-performance network applications including a massive SMS gateway, a lightweight ESB, and ApacheDS LDAP server in Java for more than 4 years. Please look around his blog or his résumé to find out more about him.

Yahoo, Microsoft asked to censor Chinese blogs

Yahoo Inc., Microsoft Corp. and other providers of blogging technology in China agreed to try to sign up users under their real names and to censor their posts, a journalism advocacy group that condemns the accord said Thursday.

Under the accord with the Internet Society of China, an offshoot of the Information Industry Ministry, the companies are "encouraged" to register users under their real names, Reporters Without Borders said in a statement. The companies may be forced to censor content or identify bloggers, the Paris-based group said.

The agreement is detrimental to free speech because service providers would be forced to divulge bloggers' identities or be punished by the government, Reporters Without Borders said. The companies also are required to "delete illegal and bad information" from blogs, the group said.

"As they already did with website hosting services, the authorities have given themselves the means to identify those posting 'subversive…

Naver, The Google Of South Korea

Crowd's wisdom helps South Korean search engine beat Google and Yahoo from the New York Times describes South Korea's most popular search engine, Naver.
Naver currently has a 77 percent share of all searches from within South Korea. follows with 10.8 percent, Yahoo with just 4.4 percent and Google with a tiny 1.7 percent of Korean Web searches.
Why does Google fall short in South Korea? Wayne Lee, an analyst at Woori Investment and Securities, said "No matter how powerful Google's search engine may be, it doesn't have enough Korean-language data to trawl to satisfy South Korean customers."
Naver's founders realized that when searching in Korean, there was hardly anything to be found. So they set out to create the content and databases, so that when you would search in Korean, you would find quality content. Naver set up "Knowledge iN" in 2002, enabling Koreans to help each other in a type of real-time question-and-answer platform. On avera…

Hbase Shell

Hbase Shell is a basic, command-line, and interactive 'shell' for manipulating tables in Hbase. It has support for a small set of SQL-inspired operations. Results are presented in an ASCII-table format.

The Hbase Shell aims to be to Hbase what the mysql client command-line tool is to mysqld, and what sqlplus to Oracle.

Hbase Shell was first added to TRUNK in July, 2007.

Google Sky Gives a Close-Up View of the Universe

Armchair explorers will now have the entire universe at their fingertips, thanks to Google's latest venture, Google Sky, a new free feature that's an application in the popular Google Earth program.
Starting today, anyone with a computer can view a close-up of about 100 million galaxies and 200 million stars।
To access Google Sky, available today, download the new Google Earth at
"This is an application that allows you to see the sky at very, very high resolution, as if you were just flying through the universe and seeing and visiting galaxies," said Chikai Ohazama, a Google product manager who has worked to gather data from astronomical organizations around the world.
Google has stitched together real photographs of the universe into one giant database.
"Basically you're seeing imagery that you have to have a very, very high-powered telescope to look at and we're placing that in the database," Ohazama said. "You can zoom in…

FT: Yahoo!'s bet on Hadoop

One of the most important announcements at Oscon last week was Yahoo!'s commitment to support Hadoop. We've been writing about Hadoop on radar for a while, so it's probably not news to you that we think Hadoop is important.
Yahoo's involvement wasn't actually news either, because Yahoo! had hired Doug Cutting, the creator of hadoop, back in January. But Doug's talk at Oscon was kind of a coming out party for Hadoop, and Yahoo! wanted to make clear just how important they think the project is. In fact, I even had a call from David Filo to make sure I knew that the support is coming from the top.
Jeremy Zawodny's post about hadoop on the Yahoo! developer network does a great job of explaining why Yahoo! considers hadoop important:
For the last several years, every company involved in building large web-scale systems has faced some of the same fundamental challenges. While nearly everyone agrees that the "divide-and-conquer using lots of cheap hardware"…