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Sunday, March 27, 2005

A discussion group about weblogs, or blogs for short, that meets at Harvard University’s Berkman Center for Internet & Society last week began releasing video tutorials about how to blog using various web and software tools.

Harvard University‘s Berkman Center hosts the blogging discussion group, which has met weekly for the past two years.

After months of discussion and collaboration on the new tutorials, at Friday’s evening meeting presenters showed off some of their early video tutorials, which stream recorded audio, and previously-captured video of a computer screen, along with simultaneous live audio from a microphone.

Participants learned how similar tutorials can be constructed using free software tools such as CamStudio. Audio of the session was made available on the World Wide Web.

Shimon Rura, a local software developer, presented a recent screen-capture + voiceover flash file he had made, demonstrating how to use a bookmarklet in the Frassle blogging package. Other participants discussed video demonstrations of how to podcast, and how to use specific blogging tools such as WordPress.

There was also disussion of a recent initiative to set up a Blogging101 site for distributing and translating these instructional materials. Rebecca MacKinnon, a noted blogger and Berkman Fellow, spoke about the BloggerCorps initiative to connect non-profits who want broader exposure with local blogging enthusiasts.

The meeting was held inside the main conference room in the Berkman Center’s Cambridge offices on Massachusetts Avenue.

Thursday, June 23, 2011

NASA’s Cassini–Huygens spacecraft has discovered evidence for a large-scale saltwater reservoir beneath the icy crust of Saturn’s moon Enceladus. The data came from the spacecraft’s direct analysis of salt-rich ice grains close to the jets ejected from the moon. The study has been published in this week’s edition of the journal Nature.

Data from Cassini’s cosmic dust analyzer show the grains expelled from fissures, known as tiger stripes, are relatively small and usually low in salt far away from the moon. Closer to the moon’s surface, Cassini found that relatively large grains rich with sodium and potassium dominate the plumes. The salt-rich particles have an “ocean-like” composition and indicate that most, if not all, of the expelled ice and water vapor comes from the evaporation of liquid salt-water. When water freezes, the salt is squeezed out, leaving pure water ice behind.

Cassini’s ultraviolet imaging spectrograph also recently obtained complementary results that support the presence of a subsurface ocean. A team of Cassini researchers led by Candice Hansen of the Planetary Science Institute in Tucson, Arizona, measured gas shooting out of distinct jets originating in the moon’s south polar region at five to eight times the speed of sound, several times faster than previously measured. These observations of distinct jets, from a 2010 flyby, are consistent with results showing a difference in composition of ice grains close to the moon’s surface and those that made it out to the E ring, the outermost ring that gets its material primarily from Enceladean jets. If the plumes emanated from ice, they should have very little salt in them.

“There currently is no plausible way to produce a steady outflow of salt-rich grains from solid ice across all the tiger stripes other than salt water under Enceladus’s icy surface,” said Frank Postberg, a Cassini team scientist at the University of Heidelberg in Germany.

The data suggests a layer of water between the moon’s rocky core and its icy mantle, possibly as deep as about 50 miles (80 kilometers) beneath the surface. As this water washes against the rocks, it dissolves salt compounds and rises through fractures in the overlying ice to form reserves nearer the surface. If the outermost layer cracks open, the decrease in pressure from these reserves to space causes a plume to shoot out. Roughly 400 pounds (200 kilograms) of water vapor is lost every second in the plumes, with smaller amounts being lost as ice grains. The team calculates the water reserves must have large evaporating surfaces, or they would freeze easily and stop the plumes.

“We imagine that between the ice and the ice core there is an ocean of depth and this is somehow connected to the surface reservoir,” added Postberg.

The Cassini mission discovered Enceladus’ water-vapor and ice jets in 2005. In 2009, scientists working with the cosmic dust analyzer examined some sodium salts found in ice grains of Saturn’s E ring but the link to subsurface salt water was not definitive. The new paper analyzes three Enceladus flybys in 2008 and 2009 with the same instrument, focusing on the composition of freshly ejected plume grains. In 2008, Cassini discovered a high “density of volatile gases, water vapor, carbon dioxide and carbon monoxide, as well as organic materials, some 20 times denser than expected” in geysers erupting from the moon. The icy particles hit the detector target at speeds between 15,000 and 39,000 MPH (23,000 and 63,000 KPH), vaporizing instantly. Electrical fields inside the cosmic dust analyzer separated the various constituents of the impact cloud.

“Enceladus has got warmth, water and organic chemicals, some of the essential building blocks needed for life,” said Dennis Matson in 2008, Cassini project scientist at NASA’s Jet Propulsion Laboratory in Pasadena, California.

“This finding is a crucial new piece of evidence showing that environmental conditions favorable to the emergence of life can be sustained on icy bodies orbiting gas giant planets,” said Nicolas Altobelli, the European Space Agency’s project scientist for Cassini.

“If there is water in such an unexpected place, it leaves possibility for the rest of the universe,” said Postberg.

Thursday, November 8, 2007

What you are about to read is an American life as lived by renowned author Edmund White. His life has been a crossroads, the fulcrum of high-brow Classicism and low-brow Brett Easton Ellisism. It is not for the faint. He has been the toast of the literary elite in New York, London and Paris, befriending artistic luminaries such as Salman Rushdie and Sir Ian McKellen while writing about a family where he was jealous his sister was having sex with his father as he fought off his mother’s amorous pursuit.

The fact is, Edmund White exists. His life exists. To the casual reader, they may find it disquieting that someone like his father existed in 1950’s America and that White’s work is the progeny of his intimate effort to understand his own experience.

Wikinews reporter David Shankbone understood that an interview with Edmund White, who is professor of creative writing at Princeton University, who wrote the seminal biography of Jean Genet, and who no longer can keep track of how many sex partners he has encountered, meant nothing would be off limits. Nothing was. Late in the interview they were joined by his partner Michael Caroll, who discussed White’s enduring feud with influential writer and activist Larry Kramer.

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Saturday, September 3, 2005

Blizzard Entertainment has won a federal ruling in the U.S. Court of Appeals against the programmers of bnetd, a software package that emulates Blizzard’s Battle.net service. The court reaffirmed the original judgement, given in October, that the Digital Millennium Copyright Act and click-through EULA’s prohibited the reverse engineering of Blizzard’s software in order to improve their playability. This was the first real test of the DMCA’s applicability.

Bnetd, released under the GNU General Public License, was created to enable users to play multiplayer games, bypassing Blizzard’s freely accessible Battle.net servers, which have sometimes been unreliable or slow for gamers. The software also disabled the CD-Key check which is present in Battle.net to prevent users of pirated copies from being able to connect to Blizzard’s servers. Offers by bnetd developers to incorporate Blizzard’s CD-Check system were declined.

The CD-Check system itself has faced controversy, with some users complaining it borders on breaching privacy in the same way as adware and other malevolent software. This is not confined to Blizzard: controversy occurred when Sony Online Entertainment’s EverQuest had a similar system which was later disabled due to complaints. Other games designed for network play are also known to have similar systems in place, the most prominent perhaps being Valve Software’s Steam system developed for Half-Life 2.

Blizzard has produced many popular titles such as Starcraft, World of Warcraft and the Diablo series.

Friday, September 24, 2010

People in American Samoa were given only eight minutes warning that a tsunami, which killed 32 people in the unincorporated territory, resulting from the 2009 Samoa earthquake, was approaching. A report published by the United States Congress admits that the warning was issued sixteen minutes after the 8.0 magnitude earthquake struck Samoa. The tsunami killed nearly 200 people in American Samoa, Samoa and Tonga.

The report, written by the National Research Council, describes the length of time between the earthquake and the initial tsunami warning being issued as “relatively long”, and states that the standard time for such a warning to be issued to be around two minutes. The study also revealed that one third of tsunami sensors are not working at any given time.

John Orcutt, a [seismologist and head of the committee that wrote the report, described the delay as a “major concern”, but he also said that “a large number of people” in American Samoa “didn’t understand and there were lives that were lost because people simply didn’t take the action to get away from the shore when they felt this huge earthquake. People have to understand the signs of a tsunami and head to higher ground.”

The Federal Emergency Management Agency, whose purpose is to coordinate the response to a disaster that has occurred in the United States and that overwhelms the resources of local and state authorities, and the Government of American Samoa did not respond to e-mails regarding the news.

The study also notes that people living in other coastal cities around the world are at risk of being unprepared for tsunamis that arrive soon after the earthquake occurs, stating that in many places, warnings might not be issued in time. “If the source were so close to shore that only minutes were available before the tsunami reached the coast, the public would need to recognize natural [signs of a tsunami approaching].” The report states that when they fear a tsunami is imminent, people should know to evacuate even “without official warnings.”

The report warns that because tsunamis are so rare, people living near the coast do not know what to do, but it also criticises authorities for not informing citizens of how to react when a tsunami is approaching. “Everybody thought that the tsunami was a single wave, and once the expected landfall time came and left, they thought it was over,” said Costas Synolakis, who is director of the Tsunami Research Center at the University of Southern California, and one of the report’s authors. He continued, “In fact, tsunamis are a series of waves that can last for three to four hours.”

He said that the United States must take action, training first responders in low-lying coastal areas, and adding more tsunami sensors to give advance warning of approaching waves. Synolakis added that, after receiving warning that there may have been a tsunami on the way after the Chile earthquake earlier this year, the response of firefighters at the Port of Los Angeles was poor because they were unfamiliar with how to deal with such a threat.

In the capital of American Samoa, Pago Pago, the tsunami measured 1.57 meters in height. The superintendent of the National Park of American Samoa Mike Reynolds reported four waves as high as six meters. People who experienced the quake said it was long, lasting from 90 seconds to three minutes. “Pago Pago city streets were strewn with overturned vehicles, cars, and debris. Some buildings located only slightly above sea level were completely destroyed by the waves, and power in some locations is not expected to be restored for up to a month,” Wikinews reported at the time.

Didi Afuafi, 28, who was riding on a bus in American Samoa when the tsunami struck, described her experiences. “I was scared. I was shocked. All the people on the bus were screaming, crying and trying to call their homes. We couldn’t get on cell phones. The phones just died on us. It was just crazy,” she said. “This is going to be talked about for generations.” U.S. President Barack Obama said of the disaster: “My deepest sympathies are with the families who lost loved ones and many people who have been affected by the earthquake and the tsunami.”

The people of American Samoa will, next Wednesday, according to a press release by the government, “hold island-wide services to honor the memories of the 34 loved ones who lost their lives” during the tsunami. Church services will be held at 6:00 a.m., followed at 6:48 a.m.—the time when the earthquake occured—thirty-two bells will be rung in memory of those who perished.

Monday, May 5, 2008

Computers and technology make our modern lifestyle more convenient, but they also create new risks like computer viruses and hacking. Many people want to enjoy the convenience of new technology, but they may not be aware of its problems.

WiMAX is being promoted in Taiwan by the Taipei Computer Association, the Industrial Technology Research Institute and the Ministry of Economic Affairs of the Republic of China. It is considered by some to be the communication standard for the next generation of mobile devices.

Information security companies are concerned increasingly by Internet crime, and some of them question the security of WiMAX. After all, everyone wants to welcome this new technology but is afraid of its potential to cause security issues.

Some companies have analyzed potential security issues which threaten the success of WiMAX. But what have they found?

Taking the opportunity of two press conferences in Taiwan, Wikinews Journalist Rico Shen briefly interviewed both Hsiao-wen Hung, President of Microsoft Research Asia and Li Chang, Deputy Secretary General of Taipei Computer Association. With their experience in the IT industry, they agreed to comment on this question.