Become a fan of Slashdot on Facebook

 



Forgot your password?
typodupeerror

+ - In blow, native Hawaiian panel withdraws support for world's largest telescope->

Submitted by sciencehabit
sciencehabit writes: Trustees of the Office of Hawaiian Affairs (OHA) – a state agency established to advocate for native Hawaiins — voted Thursday to withdraw their support for construction of the Thirty-Meter Telescope (TMT) on the summit of the Mauna Kea volcano. The vote follows weeks of protests by Native Hawaiians who say the massive structure would desecrate one of their most holy places. The protests have shut down construction of the telescope, which would be the world’s largest optical telescope if completed.

The vote, which reverses a 2009 decision to endorse the project, strikes a powerful if symbolic blow against a project that, for many native Hawaiians, has come to symbolize more than a century of assaults against their land, culture and sovereignty.

Link to Original Source

+ - Can riots be predicted by social media?->

Submitted by sciencehabit
sciencehabit writes: The broken glass and burned wreckage are still being cleared in the wake of the riots that convulsed Baltimore's streets on 27 April. The final trigger of the unrest was the funeral of a 25-year-old African-American man who had died in police custody, but observers point to many other root causes, from income inequality to racial discrimination. But for a few researchers who are studying Baltimore's unrest, the question is not the ultimate causes of the riot but its mechanism: How do such riots self-organize and spread? One of those researchers, Dan Braha, a social scientist at the New England Complex Systems Institute in Cambridge, Massachusetts, has been collecting data from Twitter that spans the riot from buildup to aftermath, part of a larger study of social media and social unrest around the world. He spoke to Science about how researchers are helping to predict the riots of the future.
Link to Original Source

+ - U.S. Senate targets patent trolls 1

Submitted by jeffkoch
jeffkoch writes: Last year, the United States Senate failed to pass bipartisan legislation to combat patent trolls when it was killed by then-Majority Leader Harry Reid of Nevada. Congressional-insider newspaper Roll Call reports today that, “Knowing Reid would no longer control the Senate's legislative schedule in 2015, staff for John Cornyn, (a Republican from Texas), and Charles E. Schumer, (a Democrat from New York)”, began work in February to assemble a new bill and to build support among fellow members of the Senate. Patent law is usually not a partisan issue, and President Barack Obama has called for getting an overhaul to his desk on several occasions including in his 2014 State of the Union speech.
The last overhaul of United States patent law, the America Invents Act, took several years to be developed. The U.S. Congress is likely to act on the proposed legislation before they recess in August.
“Patent trolls are taking a system meant to drive innovation and instead using it to stifle job-creating businesses around the country. Main Street stores, tech startups and more are being smothered by the abuse that is all too common in our patent system, and it’s time for that to end,” Schumer said in a statement. “This bipartisan bill shifts the legal burden back onto those who would abuse the patent system in order to make a quick buck at the expense of businesses that are playing by the rules.”

+ - EM Drive is now a real thing->

Submitted by thayfen
thayfen writes: NASA’s Johnson Space Center has successfully tested an electromagnetic (EM) propulsion drive in a vacuum-- we now have the potential to reach the outer-planets in months-long time-spans! Corporate America wants to build a pipe-line to Titan :(
Link to Original Source

+ - Bitcoin is Disrupting the Argentine Economy

Submitted by HughPickens.com
HughPickens.com writes: Nathaniel Popper writes in the NYT that with its volatile currency and dysfunctional banks, Argentina is the perfect place to experiment with a new digital currency. The number of Bitcoin users in Argentina is relatively small; it barely registers on most charts of global Bitcoin usage. But Argentina has been quietly gaining renown in technology circles as the first, and almost only, place where Bitcoins are being regularly used by ordinary people for real commercial transactions. For example, BitPagos is selling bitcoins in over 8,000 Argentine convenience stores and is helping more than 200 hotels, both cheap and boutique, take credit-card payments from foreign tourists. The money brought to Argentina using Bitcoin circumvents the onerous government restrictions on receiving money from abroad

The Rock Hostel is one of hundreds of hotels in the country using BitPagos to collect credit-card payments from foreign customers. If owner Rodriguez Pons accepted credit-card payments from American customers through the usual financial channels, customers would be billed in dollars, and when those dollars came to Pons’s Argentine bank account, they would be converted at the official rate, about 30 percent lower than the black-market rate. It would also take 20 days for Pons to get her pesos. BitPagos helped counter these drawbacks by taking the credit-card payment in the United States and then using the dollars to buy Bitcoins, generally from Coinbase, before sending them to Pons immediately.

Bitcoin proponents like to say that the currency first became popular in the places that needed it least, like Europe and the United States, given how smoothly the currencies and financial services work there. It makes sense that a place like Argentina would be fertile ground for a virtual currency. Inflation is constant: At the end of 2014, for example, the peso was worth 25 percent less than it was at the beginning of the year. And that adversity pales in comparison with past bouts of hyperinflation, defaults on national debts and currency revaluations. “In the long run, Bitcoin will be very disruptive to the developed world,” says Dan Morehead, a former Goldman Sachs executive who now runs a hedge fund focused on Bitcoin. Things are happening sooner in Argentina, he says, because its financial system creates hassles for the people there. But, he added, “Argentina is just a more extreme example of the situation in every country.”

+ - How one tweet wiped $8bn off Twitter's value

Submitted by Anonymous Coward
An anonymous reader writes: Someone mistakenly published earnings information on a Nasdaq-run investor relations page for Twitter before the company officially released the news and it sent the stock into a tailspin. Initially the earnings statement went unnoticed, but soon a Tweet with the results got a lot of attention. The stock lost more than $8 billion at one point as news spread. "We asked the New York Stock Exchange to halt trading once we discovered our Q1 numbers were out, and we published our results as soon as possible thereafter," said Twitter's senior director for investor relations, Krista Bessinger. "Selerity, who provided the initial tweets with our results, informed us that earnings release was available on our Investor Relations site before the close of market. Nasdaq hosts and manages our IR website, and we explicitly instructed them not to release our results until after the market close and only upon our specific instructions, which is consistent with prior quarters. We are continuing to investigate with them exactly what occurred."

+ - Is it dark matter, or a previously unrecognized failure of Newton? 2

Submitted by schwit1
schwit1 writes: The uncertainty of science: Using new data gathered by the 10-meter Keck telescope in Hawaii, astronomers have found that the outer stars of elliptical galaxies exhibit the same behavior as the outer stars of spirals, suggesting once again the existence of dark matter.

One of the most important scientific discoveries of the 20th century was that the spectacular spiral galaxies, such as our own Milky Way, rotate much faster than expected, powered by [the] extra gravitational force of invisible "dark matter" as it is now called. Since this discovery 40 years ago, we have learned that this mysterious substance, which is probably an exotic elementary particle, makes up about 85 percent of the mass in the Universe, leaving only 15 percent to be the ordinary stuff encountered in our everyday lives. Dark matter is central to our understanding of how galaxies form and evolve — and is ultimately one of the reasons for the existence of life on Earth — yet we know almost nothing about it.

"The surprising finding of our study was that elliptical galaxies maintain a remarkably constant circular speed out to large distances from their centers, in the same way that spiral galaxies are already known to do," said Cappellari. "This means that in these very different types of galaxies, stars and dark matter conspire to redistribute themselves to produce this effect, with stars dominating in the inner regions of the galaxies, and a gradual shift in the outer regions to dark matter dominance."

What is most fascinating about this press release, however, is that it also noted that dark matter is only one explanation for the data, and that the failure of Newtonian physics at large distances, instead of dark matter, might also provide an explanation.

However, the [solution] does not come out naturally from models of dark matter, and some disturbing fine-tuning is required to explain the observations. For this reason, the [problem] even led some authors to suggest that, rather than being due to dark matter, it may be due to Newton's law of gravity becoming progressively less accurate at large distances. Remarkably, decades after it was proposed, this alternative theory (without dark matter) still cannot be conclusively ruled out.

Physicists call this other theory MOND, for modified Newtonian dynamics. It is not a very popular theory, however, and is almost always ignored, even though it appears to work as well as dark matter to explain the motion of stars in galaxies. Instead, most scientists favor dark matter.

For this press release to mention it as suggests the new data favors it over dark matter, which would make this a significant discovery.

+ - Breakthough makes Transparent Aluminum affordable

Submitted by frank249
frank249 writes: In the Star Trek universe, transparent aluminum is used in various fittings in starships, including exterior ship portals and windows. In real life, Aluminium oxynitride is a form of ceramic whose properties are similar to those of the fictional substance seen in Star Trek. It has a hardness of 7.7 Mohs and was patented in 1980, and has military applications as bullet-resistant armour, but is too expensive for widespread use.

Engadget reports that there has been a major breakthrough in materials science. After decades of research and development, the US Naval Research Laboratory has created a transparent, bulletproof material that can be molded into virtually any shape. This material, known as Spinel (magnesium aluminate), is made from a synthetic powdered clay that is heated and pressed under vacuum into transparent sheets. Spinel weighs just a fraction of a modern bulletproof pane.

+ - Twin-Fuselage Carplane Prototype Makes Public Debut->

Submitted by Zothecula
Zothecula writes: We've been teased with the prospect of a flying car for years now, with many designs, like the Terrafugia Transition, having been under development for some time but yet to arrive in garages or hangars. The Braunschweig-based company, Carplane hopes to square the circle with a twin-fuselage roadable monoplane that made its first public appearance in prototype form at the recent AERO show in Friedrichshafen, Germany.
Link to Original Source

+ - Why Our Antiquated Power Grid Needs Battery Storage ->

Submitted by Lucas123
Lucas123 writes: Last year, renewable energy sources accounted for half of new installed electric-generation capacity (natural gas units made up most of the remainder). As more photovoltaic panels are installed on rooftops around the nation, an antiquated power grid is being overburdened by a bidirectional load its was never engineered to handle. The Hawaiian Electric Company, for example, said it's struggling with electricity "backflow" that could destabilize its system. Batteries for distributed renewable power has the potential to mitigate the load on the national grid by allowing a redistribution of power during peak hours. As such Tesla, which is expected to announce batteries for homes and utilities on Thursday, and others are targeting a market estimated to be $1.2B market by 2019. Along with taking up some of the load during peak house, battery capacity can be used when power isn't being generated by renewable systems, such as at night and during inclement weather. That also reduces grid demand.
Link to Original Source

+ - Tesla To Unveil Its Gigafatory's Home/Utility-Scale Batteries->

Submitted by Lucas123
Lucas123 writes: Elon Musk is expected to announce batteries that will store power from renewable energy sources in homes and for utilities that will supplement their power supply in off hours at night and during inclement weather. The announcement will take place next Thursday (April 30) at 8 p.m. Musk is also chairman of SolarCity, the largest provider of residential solar systems in the U.S., which controls 30% to 40% of the U.S. market. Tesla plans to mass produce household- and utility-grade batteries in a $5 billion lithium-ion battery factory project it calls the "Gigafactory" — the first one of which is being constructed in Nevada. As battery technology evolves, it could pave the way to cost effectively store both wind and solar-generated energy and connect to electrical power grids. The technology also could be used by businesses and homes, which could virtually remain off the power grid except in emergencies. The grid, essentially, would be the backup. The company is currently beta-testing its batteries in about 330 homes, mainly in California. Those batteries can hold up to 10kWh of electricity. The utility-grade model is expected to have a 400kWh capacity.
Link to Original Source

+ - McConnell introduces bill to extend NSA surveillance->

Submitted by jriding
jriding writes: Senate Majority Leader Mitch McConnell introduced a bill Tuesday night to extend through 2020 a controversial surveillance authority under the Patriot Act.

The move comes as a bipartisan group of lawmakers in both chambers is preparing legislation to scale back the governmentâ(TM)s spying powers under Section 215 of the Patriot Act.

http://www.washingtonpost.com/...

Link to Original Source

+ - Wi-Fi Attack Breaks iPhones By Locking Them Into an Endless Loop-> 1

Submitted by Anonymous Coward
An anonymous reader writes: Researchers from Skycure demonstrated a novel attack at the RSA 2015 conference that affects iPhones and other iOS devices. The attack, which takes advantage of new and previously announced vulnerabilities, locks iPhones into a never-ending reboot cycle effectively rendering them useless.

Developing a Denial of Service Attack
Skycure CEO Adi Sharabani explained that this attack began when Skycure researchers bought a new router and were messing around with its network settings. In doing so, they discovered a particular configuration that caused apps in iPhones connected to that router to crash whenever they launched.

Link to Original Source

Hacking's just another word for nothing left to kludge.

Working...