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Aujourd’hui — 5 novembre 2024Flux principal

Prime Video Will Let You Summon AI To Recap What You're Watching

Par : BeauHD
4 novembre 2024 à 23:30
Amazon's Prime Video has introduced "X-Ray Recaps," a generative AI feature that will recap what you're watching. The new tool can create text summaries of "full seasons of TV shows, single episodes, and even pieces of episodes," the company says in a blog post. The Verge reports: X-Ray Recaps will be accessible from the detail page of a show or in X-Ray while you're watching something. The tool "analyzes various video segments, combined with subtitles or dialogue, to generate detailed descriptions of key events, places, times, and conversations," Amazon says. Amazon has also applied "guardrails" to help the feature avoid sharing spoilers and to keep summaries concise. X-Ray Recaps, which is are beta, are coming to Fire TV devices starting today, with support for "additional devices" available by the end of this year, Amazon says. The feature, at launch, will work with all Amazon MGM Studios Original series.

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Hier — 4 novembre 2024Flux principal

FFmpeg Devs Boast of Up To 94x Performance Boost After Implementing Handwritten AVX-512 Assembly Code

Par : BeauHD
4 novembre 2024 à 22:50
Anton Shilov reports via Tom's Hardware: FFmpeg is an open-source video decoding project developed by volunteers who contribute to its codebase, fix bugs, and add new features. The project is led by a small group of core developers and maintainers who oversee its direction and ensure that contributions meet certain standards. They coordinate the project's development and release cycles, merging contributions from other developers. This group of developers tried to implement a handwritten AVX512 assembly code path, something that has rarely been done before, at least not in the video industry. The developers have created an optimized code path using the AVX-512 instruction set to accelerate specific functions within the FFmpeg multimedia processing library. By leveraging AVX-512, they were able to achieve significant performance improvements -- from three to 94 times faster -- compared to standard implementations. AVX-512 enables processing large chunks of data in parallel using 512-bit registers, which can handle up to 16 single-precision FLOPS or 8 double-precision FLOPS in one operation. This optimization is ideal for compute-heavy tasks in general, but in the case of video and image processing in particular. The benchmarking results show that the new handwritten AVX-512 code path performs considerably faster than other implementations, including baseline C code and lower SIMD instruction sets like AVX2 and SSSE3. In some cases, the revamped AVX-512 codepath achieves a speedup of nearly 94 times over the baseline, highlighting the efficiency of hand-optimized assembly code for AVX-512.

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Perplexity Will Show Live US Election Results Despite AI Accuracy Warnings

Par : BeauHD
4 novembre 2024 à 22:10
An anonymous reader quotes a report from Ars Technica: On Friday, Perplexity launched an election information hub that relies on data from The Associated Press and Democracy Works to provide live updates and information about the 2024 US general election, which takes place on Tuesday, November 5. "Starting Tuesday, we'll be offering live updates on elections using data from The Associated Press so you can stay informed on presidential, senate, and house races at both a state and national level," Perplexity wrote in a blog post. The site will pull data from special data sources (called APIs) hosted by the two organizations. As of Monday, Perplexity's hub currently provides interactive information on voting requirements, poll times, and summaries about ballot measures, candidates, policy positions, and endorsements. Users can ask questions about the information similar to using a chatbot like ChatGPT. Perplexity's embrace of providing election information is an exception in the AI field. Wary about accidentally providing misinformation, competitor AI assistants from OpenAI, Google, and Anthropic currently direct users elsewhere or decline to answer election questions. OpenAI's ChatGPT Search directs election result queries to The Associated Press and Reuters. Perplexity describes its new elections hub as "an entry point for understanding key issues." But like other AI models, Perplexity can produce confabulations (plausible incorrect information) when generating responses. That could present an accuracy problem because the site's Voter Guide service uses AI language models to summarize and interpret information pulled from the web. Here's what Ars Technica advises: "Take what you see on Perplexity's site with a huge grain of salt -- do not rely on it without verifying the information with a trustworthy external source."

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À partir d’avant-hierFlux principal

US Lawmakers On EPA To Ban Pesticide Linked To Parkinson's Disease

Par : BeauHD
2 novembre 2024 à 13:00
An anonymous reader quotes a report from The Guardian: More than 50 US lawmakers are calling on the Environmental Protection Agency (EPA) to join dozens of other countries in banning a widely used weedkiller linked to Parkinson's disease and other health dangers. In a October 31 letter (PDF) to the agency, seven US senators said that paraquat, a weedkiller commonly applied on US farms, was a "highly toxic pesticide whose continued use cannot be justified given its harms to farmworkers and rural communities". The call for a ban from the senators came after 47 members of the US House of Representatives sent a similar letter (PDF) to the EPA calling for a ban earlier in October. The lawmakers cite scientific links between paraquat use and development of Parkinson's and other "life threatening diseases" as well as "grave impacts on the environment". "Health risks include a higher risk of Parkinson's disease, with some studies finding a 64% increase in the likelihood of developing Parkinson's, non-Hodgkin's Lymphoma, thyroid cancer, and other thyroid issues," they wrote. The New Jersey senator Cory Booker, organizer of the Senate letter, said the risks of paraquat exposure were "well documented" and that it was "irresponsible" for the EPA to continue to allow its use. "I hope the EPA will follow the science and ban paraquat," Booker said. The EPA has long maintained that there is no "clear link" between paraquat exposure and Parkinson's disease, though the agency does have a number of restrictions on use of the chemical due to its acute toxicity. The agency issued a draft report earlier this year affirming its position. Still, the agency said at that time that it would be reviewing more scientific studies and would issue a final report by January 17, 2025.

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Starlink Enters National Radio Quiet Zone

Par : BeauHD
2 novembre 2024 à 10:00
Starlink has launched home Internet service to 99.5% of residents in the National Radio Quiet Zone (NRQZ) after a multi-year collaboration with the National Radio Astronomy Observatory to minimize interference with radio telescopes. "The vast majority of people within the areas of Virginia and West Virginia collectively known as the National Radio Quiet Zone (NRQZ) can now receive high speed satellite Internet service," the National Radio Astronomy Observatory and Green Bank Observatory announced said. "The newly available service is the result of a nearly three-year collaborative engineering effort between the US National Science Foundation (NSF), SpaceX, and the NSF National Radio Astronomy Observatory (NSF NRAO), which operates the NSF Green Bank Observatory (NSF GBO) in West Virginia within the NRQZ." Ars Technica reports: There's a controversy over the 0.5 percent of residents who aren't included and are said to be newly blocked from using the Starlink Roam service. Starlink markets Roam as a service for people to use while traveling, not as a fixed home Internet service. The Pendleton County Office of Emergency Management last week issued a press release (PDF) saying that "customers with the RV/Roam packages had been using Starlink for approximately two years throughout 100% of the NRQZ. Now, the 0.5% have lost coverage after having it for two years. This means that a large section of southeastern Pendleton County and an even larger section of northern Pocahontas will NOT be able to utilize Starlink." PCMag wrote that "Starlink is now live in 42 of the 46 cell areas around the Green Bank Observatory's telescopes." Pendleton County Emergency Services Coordinator Rick Gillespie told Ars today that Roam coverage was cut off in the remaining four cell areas. "After the agreement, we all lost effective use within the four cells," Gillespie told Ars in an email. Gillespie's press release said that, "in many cases, Starlink was the only Internet provider option residents and emergency responders had. This is unacceptable."

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Inventory Counts Air Pollution Cost of Space Launches and Re-Entries

Par : BeauHD
2 novembre 2024 à 03:30
An anonymous reader quotes a report from The Guardian: A new global inventory has catalogued air pollution from space activities from 2020 to 2022. The inventory includes time, position and pollution from 446 launchers as they ascended and the tracks of re-entries as objects are heated to extreme temperatures and break up or burn up in the upper atmosphere. It catalogues the pollution from 63,000 tons of rocket propellants used in 2022 and from 3,622 objects, including rocket parts and satellites, that re-entered the atmosphere between 2020 and 2023, amounting to about 12,000 tons. [...] Types of launch pollutants depend on the propellent but can include particles of soot and aluminum oxides as well as nitrogen oxides, chlorine and water vapour and carbon dioxide. Extreme heat on re-entry causes atmospheric oxygen and nitrogen to combine to form more nitrogen oxides and also produces tiny metal-oxide particles as the objects break and burn up. Soot emitted high in the atmosphere can persist for several years, with a resulting climate warming impact that is up to 500 times greater than the same amount of soot from aviation or ground-level sources. Aluminum oxide particles, nitrogen oxides and chloride can consume the ozone in the stratosphere that protects us from the sun's ultraviolet radiation. These can remain in the atmosphere for decades. Dr Connor Barker, of the UCL team, said: "Many rocket manufacturers and space agencies keep this information tightly controlled. We had to be creative about the different sources we consulted, from launch live streams on YouTube to online databases maintained by space enthusiasts in their spare time."

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California Inks Sustainable Aviation Fuel Deal With Major Airlines

Par : BeauHD
2 novembre 2024 à 00:50
California signed an agreement with major airlines to increase the use of sustainable aviation fuels, aiming to reach 200 million gallons by 2035 or about 40% of the state's air travel demand. The Hill reports: The California Air Resources Board (CARB) and Airlines for America (A4A) -- an industry trade group representing almost a dozen airlines -- pledged to increase the availability of sustainable aviation fuels statewide. Sustainable aviation fuels -- lower-carbon alternatives to petroleum-based jet fuels -- are typically made from nonpetroleum feedstocks, such as biomass or waste. At a San Francisco International Airport ceremony Wednesday, the partners committed (PDF) to using 200 million gallons of such fuels by 2035 -- an amount estimated to meet about 40 percent of travel demand within the state at that point, according to CARB. That quantity also represents a more than tenfold increase from current usage levels of these fuels, the agency added. Among A4A member airlines are Alaska Airlines, American Airlines, Atlas Air Worldwide, Delta Air Lines, FedEx, Hawaiian Airlines, JetBlue Airways, Southwest Airlines, United Airlines and UPS, while Air Canada is an associate member. To achieve the 2035 goals, CARB and A4A said they plan to work together to identify, assess and prioritize necessary policy measures, such as incentivizing relevant investments and streamlining the permitting processes. A Sustainable Aviation Fuel Working Group, which will include government and industry stakeholders, will meet annually to both discuss progress and address barriers toward meeting these goals, the partners added. A public website will display updated information about the availability and use of conventional and sustainable fuels across California, while also providing details about state policies, according to the agreement.

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Waymo Explores Using Google's Gemini To Train Its Robotaxis

Par : BeauHD
2 novembre 2024 à 00:10
Waymo is advancing autonomous driving with a new training model for its robotaxis built on Google's multimodal large language model (MLLM) Gemini. The Verge reports: Waymo released a new research paper today that introduces an "End-to-End Multimodal Model for Autonomous Driving," also known as EMMA. This new end-to-end training model processes sensor data to generate "future trajectories for autonomous vehicles," helping Waymo's driverless vehicles make decisions about where to go and how to avoid obstacles. But more importantly, this is one of the first indications that the leader in autonomous driving has designs to use MLLMs in its operations. And it's a sign that these LLMs could break free of their current use as chatbots, email organizers, and image generators and find application in an entirely new environment on the road. In its research paper, Waymo is proposing "to develop an autonomous driving system in which the MLLM is a first class citizen." The paper outlines how, historically, autonomous driving systems have developed specific "modules" for the various functions, including perception, mapping, prediction, and planning. This approach has proven useful for many years but has problems scaling "due to the accumulated errors among modules and limited inter-module communication." Moreover, these modules could struggle to respond to "novel environments" because, by nature, they are "pre-defined," which can make it hard to adapt. Waymo says that MLLMs like Gemini present an interesting solution to some of these challenges for two reasons: the chat is a "generalist" trained on vast sets of scraped data from the internet "that provide rich 'world knowledge' beyond what is contained in common driving logs"; and they demonstrate "superior" reasoning capabilities through techniques like "chain-of-thought reasoning," which mimics human reasoning by breaking down complex tasks into a series of logical steps. Waymo developed EMMA as a tool to help its robotaxis navigate complex environments. The company identified several situations in which the model helped its driverless cars find the right route, including encountering various animals or construction in the road. [...] But EMMA also has its limitations, and Waymo acknowledges that there will need to be future research before the model is put into practice. For example, EMMA couldn't incorporate 3D sensor inputs from lidar or radar, which Waymo said was "computationally expensive." And it could only process a small amount of image frames at a time. There are also risks to using MLLMs to train robotaxis that go unmentioned in the research paper. Chatbots like Gemini often hallucinate or fail at simple tasks like reading clocks or counting objects.

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US Indicts 26-Year-Old Gotbit Founder For Market Manipulation

Par : BeauHD
1 novembre 2024 à 23:30
The feds have indicted Aleksei Andriunin, a 26-year-old Russian national and founder of Gotbit, on charges of wire fraud and conspiracy to commit market manipulation. Crypto News reports: According to the U.S. Attorney's Office, the indictment alleges that Andriunin and his firm participated in a long-running scheme to artificially boost trading volumes for various cryptocurrency companies, including some based in the United States, to make them appear more popular and increase their trading value. Andriunin allegedly led these activities between 2018 and 2024 as Gotbit's CEO. He could face up to 20 years in prison, additional fines, and asset forfeiture if convicted, according to the U.S. Attorney's Office. Prosecutors say the scheme involved "wash trading," where the firm used its software to make fake trades that inflated a cryptocurrency's trading volume. This practice, called market manipulation, can mislead investors by giving the impression that demand for a particular cryptocurrency is higher than it actually is. Wash trades are illegal in traditional finance and are considered fraudulent because they deceive investors and manipulate market behavior. Court documents also identify Gotbit's two directors, Fedor Kedrov and Qawi Jalili, as co-conspirators. The indictment claims Gotbit documented these activities in detailed records, tracking differences between genuine and artificial trading volumes. The firm allegedly pitched these services to prospective clients, explaining how Gotbit's tactics would bypass detection on public blockchains, where transactions are recorded transparently. The U.S. Department of Justice has announced that it seized over $25 million worth of cryptocurrency assets connected to these schemes and made four arrests across multiple firms. If you've been following the crypto industry, you're probably familiar with "pump-and-dump" schemes that have popped up throughout the years. Although it's a form of market manipulation, it's not quite the same as "wash trading." In a pump-and-dump scheme, the perpetrator artificially inflates the price of a security (often a low-priced or thinly traded stock) by spreading misleading or exaggerated information to attract other buyers, who then drive up the price. Once the price has risen due to increased demand, the manipulators "dump" their shares at the inflated price, selling to the new buyers and pocketing the profits. The price typically crashes after the dump, leaving unsuspecting investors with overvalued shares and significant losses. Wash trading, on the other hand, involves simultaneously buying and selling of the same asset to create the illusion of higher trading volume and activity. The purpose is to mislead other investors about the asset's liquidity and demand, often giving the impression that it is more popular or actively traded than it actually is. Wash trades usually occur without real changes in ownership or price movement, as the buyer and seller may even be the same person or entity. This tactic can manipulate prices indirectly by creating a perception of interest, but it does not involve a direct inflation followed by a sell-off, like a pump-and-dump scheme.

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Royal Navy Successfully Tests Quantum-Sensing Technology

Par : BeauHD
1 novembre 2024 à 22:50
An anonymous reader quotes a report from the Royal Navy: The Royal Navy has successfully demonstrated the capabilities of ground-breaking cold atom technology. P2000 vessel HMS Pursuer hosted the trial, which unlocks new possibilities in areas such as covert monitoring, which require precise signals for accurate positioning, navigation and timing. The Office of the Chief of Technology Officer (OCTO) for the RN worked with UK quantum technology company Aquark Technologies. The trial involved the company's miniature cold atom systems, founded on Aquark's unique laser-cooling method, known as supemolasses. This method to generate cold atoms does not need an applied magnetic field, therefore reducing the size, weight, power consumption and cost of sensors. A cold atom is an atom that has been laser-cooled to extremely low temperatures, typically near absolute zero (-273.15C). At these temperatures, the thermal motion of atoms is very slow, allowing their quantum mechanical properties to be precisely controlled. Quantum Sensing is an advanced sensor technology that detects changes in motion, and electric and magnetic fields, by collecting data at the atomic level. Commander Matthew Steele, who heads up Future Technology for OCTO, said: "Quantum technologies being developed in the UK will offer an alternative Position, Navigation and Timing (PNT) capability necessary to operate effectively in GPS denied or degraded environments." "Over the next three years, the Navy seeks to accelerate the development of quantum technologies -- such as Aquarks -- through funding and sea trials, to secure the Royal Navy an opportunity to invest in a non-GPS-based PNT capability and to maintain its global operating advantage."

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Disney Forms Dedicated AI, XR Group To Coordinate Company-Wide Adoption

Par : BeauHD
1 novembre 2024 à 22:10
Disney's recently formed Office of Technology Enablement will coordinate the company's exploration, adoption and use of artificial intelligence, AR and VR tech. Engadget reports: It has tapped Jamie Voris, previously the CTO of its Studios Technology division, to oversee the effort. Before joining Disney in 2010, Voris was the chief technology officer at the National Football League. More recently, he led the development of the company's Apple Vision Pro app. Voris will report to Alan Bergman, the co-chairman of Disney Entertainment. Reuters reports the company eventually plans to grow the group to about 100 employees. "The pace and scope of advances in AI and XR are profound and will continue to impact consumer experiences, creative endeavors, and our business for years to come -- making it critical that Disney explore the exciting opportunities and navigate the potential risks," Bergman wrote in an email Disney shared with Engadget. "The creation of this new group underscores our dedication to doing that and to being a positive force in shaping responsible use and best practices." A Disney spokesperson told Engadget the Office of Technology Enablement won't take over any existing AI and XR projects at the company. Instead, it will support Disney's other teams, many of which are already working on products that involve those technologies, to ensure their work fits into the company's broader strategic goals. "It is about bringing added focus, alignment, and velocity to those efforts, and about reinforcing our commitment being a positive force in shaping responsible use and best practices," the spokesperson said.

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US Plans $825 Million Investment For New York Semiconductor R&D Facility

Par : BeauHD
1 novembre 2024 à 21:30
The Biden administration is investing $825 million in a new semiconductor research and development facility in Albany, New York. Reuters reports: The New York facility will be expected to drive innovation in EUV technology, a complex process necessary to make semiconductors, the U.S. Department of Commerce and Natcast, operator of the National Semiconductor Technology Center (NTSC) said. The launch of the facility "represents a key milestone in ensuring the United States remains a global leader in innovation and semiconductor research and development," Commerce Secretary Gina Raimondo said. From the U.S. Department of Commerce press release: EUV Lithography is essential for manufacturing smaller, faster, and more efficient microchips. As the semiconductor industry pushes the limits of Moore's Law, EUV lithography has emerged as a critical technology to enable the high-volume production of transistors beyond 7nm, previously unattainable. As the NSTC develops capabilities and programs, access to EUV lithography R&D is essential to meet its three primary goals 1) extend U.S. technology leadership, 2) reduce the time and cost to prototype, and 3) build and sustain a semiconductor workforce ecosystem.

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Rivian's Chief Software Officer Says In-Car Buttons Are 'An Anomaly'

Par : BeauHD
1 novembre 2024 à 20:50
An anonymous reader quotes a report from TechCrunch: The trend of big touchscreens in cars has left many yearning for the not-so-distant days when most user interactions happened with physical buttons. But Rivian's chief software officer Wassym Bensaid believes using buttons in a car is an "anomaly." "It's a bug. It's not a feature," Bensaid said Wednesday at TechCrunch Disrupt 2024. "Ideally, you would want to interact with your car through voice. The problem today is that most voice assistants are just broken." To that end, Bensaid said that "every week" he's driving around an engineering vehicle that has an AI-powered voice assistant, though he did not specify which one. He mentioned earlier in his interview with TechCrunch's transportation editor Kirsten Korosec that Rivian has "partnerships that I cannot yet talk about." "I think the car is actually a fantastic environment for AI," he said, while noting that latency and hallucinations are still very big problems that need to be solved. "The final north star I have is having voice [controls] become the primary means of interaction with the vehicle. The reality is that the vehicle is so feature-rich, that even if we do a fantastic job in the UI, there will always be prioritization that we need to do in terms of having things one or two menus behind," Bensaid told TechCrunch after he got off stage. Bensaid also said he's a big believer in the ability of AI-powered voice controls to handle complex requests. For instance, he said if a driver says "I'm hungry" the in-car assistant should be able to quickly direct them to a nearby restaurant that they might prefer. Bensaid said the company is committed to creating a unique, integrated user experienced tailored for Rivian owners -- one that won't include CarPlay. CarPlay "takes over all the pixels in the screen, and it's a replacement of the entire experience, and we truly believe that with the technology capabilities that we have, we can offer a much more refined, integrated experience," he said.

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US Experts Say Headlights Aren't Bright Enough

Par : BeauHD
1 novembre 2024 à 13:00
An anonymous reader quotes a report from The Guardian: Complaints about the brightness of modern headlights have become commonplace. On X, thousands of users have tweeted about headlights being too bright. The subreddit r/fuckyourheadlights has over 35,000 members who post blurry photos of offending high beams and LED headlights. Outlets like the New York Times and NBC News have written about the risks of headlight glare. Advocacy groups have called for bans on LED headlights. And the UK government launched a review into the dangers of headlight glare earlier this year, after many driver complaints. And yet, according to many experts, the problem with headlights is not that they're too bright -- it's that they're not bright enough. "We actually need more light on the road than what we have," says Greg Bannon, director of automotive engineering at the American Automobile Association (AAA). Only a minority of US roadways have overhead street lighting, as one 2019 AAA report noted. As a result, in many areas, headlights are the sole method of illumination when driving at night. But which is the safety bigger risk: inadequate illumination, or headlights that impair the vision of other drivers? The report notes that the U.S. standards set by the National Highway Traffic Safety Administration (NHTSA) haven't changed in decades and are much weaker than Europe's. Adaptive headlights, which automatically adjust brightness to avoid blinding other drivers, have been approved by NHTSA since 2022 but are still relatively rare due to differing standards and costs.

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Pixel Phones Are Getting an Actual Weather App In 2024

Par : BeauHD
1 novembre 2024 à 10:00
Google is rolling out a dedicated weather app on Pixel phones (model 6 and newer with Android 15) that integrates AI-generated summaries and customizable widgets. Ars Technica reports: There's a prominent "AI generated weather report" on top of the weather stack, which is a combination of summary and familiarity. "Cold and rainy day, bring your umbrella and hold onto your hat!" is Google's example; I can't provide another one, because an update to "Gemini Nano" is pending. You can see weather radar for your location, along with forecasted precipitation movement. The app offers "Nowcasting" precipitation guesses, like "Rain continuing for 2 hours" or "Light rain in 10 minutes." The best feature, one seen on the version of Weather that shipped to the Pixel Tablet and Fold, is that you can rearrange the order of data shown on your weather screen. I moved the UV index, humidity, sunrise/sunset, and wind conditions as high as they could go on my setup. It's a trade-off, because the Weather app's data widgets are so big as to require scrolling to get the full picture of a day, and you can't move the AI summary or 10-day forecast off the top. But if you only need a few numbers and like a verbal summary, it's handy. Sadly, if you're an allergy sufferer and you're not in the UK, Germany, France, or Italy, Google can't offer you any pollen data or forecasts. There is also, I am sad to say, no frog. You can download the app here.

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Uranus' Moon Miranda May Have an Ocean Beneath Its Surface, Study Finds

Par : BeauHD
1 novembre 2024 à 07:00
A new study suggests Uranus' moon Miranda may harbor a vast subsurface ocean, challenging previous assumptions about its frozen state and positioning it as a potential ocean world alongside other icy moons. Phys.Org reports: Among the moons in the solar system, Miranda stands out. The few images Voyager 2 captured in 1986 show Miranda's southern hemisphere (the only part we've seen) is a Frankenstein-like hodgepodge of grooved terrain quartered off by rough scarps and cratered areas, like squares on a quilt. Most researchers suspect these bizarre structures are the result of tidal forces and heating within the moon. Caleb Strom, a graduate student at the University of North Dakota who worked with Nordheim and Alex Patthoff of the Planetary Science Institute in Arizona, revisited the Voyager 2 images. The team set out to explain Miranda's enigmatic geology by reverse engineering the surface features, working backward to uncover what the moon's interior structure must have been to shape the moon's geology in response to tidal forcing. After first mapping the various surface features like cracks, ridges and Miranda's unique trapezoidal coronae, the team developed a computer model to test several possible structures of the moon's interior, matching the predicted stress patterns to the actual surface geology. The setup that produced the best match between predicted stress patterns and observed surface features required the existence of vast ocean beneath Miranda's icy surface some 100-500 million years ago. This subsurface ocean was at least 62 miles (100 kilometers) deep, according to the study, and hidden beneath an icy crust no more than 19 miles (30 kilometers) thick. Given Miranda has a radius of just 146 miles (235 kilometers), the ocean would have filled almost half of the moon's body. "That result was a big surprise to the team," Strom said. Key to creating that ocean, the researchers believe, were tidal forces between Miranda and nearby moons. These regular gravitational tugs can be amplified by orbital resonances -- a configuration where each moon's period around a planet is an exact integer of the others' periods. Jupiter's moons Io and Europa, for example, have a 2:1 resonance: For every two orbits Io makes around Jupiter, Europa makes exactly one, leading to tidal forces that are known to sustain an ocean beneath Europa's surface. These orbital configurations and the resulting tidal forces deform the moons like rubber balls, leading to friction and heat that keeps interiors warm. This also creates stresses that crack the surface, creating a rich tapestry of geologic features. Numerical simulations have suggested that Miranda and its neighboring moons likely had such a resonance in the past, offering a potential mechanism that could have warmed Miranda's interior to produce and maintain a subsurface ocean. At some point, the moons' orbital ballet desynchronized, slowing the heating process so that the moon's insides started to cool and solidify. But the team doesn't think Miranda's interior has fully frozen yet. If the ocean had completely frozen, Nordheim explained, it would have expanded and caused certain telltale cracks on the surface, which aren't there. This suggests that Miranda is still cooling -- and may have an ocean beneath its surface even now. Miranda's modern-day ocean is probably relatively thin, Strom noted. "But the suggestion of an ocean inside one of the most distant moons in the solar system is remarkable," he said. Miranda wasn't predicted to have an ocean. With its small size and old age, scientists thought it would likely be a frozen ball of ice. Any leftover heat from its formation was assumed to have dissipated long ago. But as Patthoff pointed out, predictions about ice moons can be wrong, as evidenced by Saturn's moon Enceladus. The study has been published in The Planetary Science Journal.

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Sellafield Cleanup Cost Rises To $175 Billion Amid Tensions With Treasury

Par : BeauHD
1 novembre 2024 à 03:30
An anonymous reader quotes a report from The Guardian: The cost of cleaning up Sellafield is expected to spiral to 136 billion pounds ($175 billion USD) and Europe's biggest nuclear waste dump cannot show how it offers taxpayers value for money, the public spending watchdog has said. Projects to fix buildings containing hazardous and radioactive material at the state-owned site on the Cumbrian coast are running years late and over budget. Sellafield's spending is so vast -- with costs of more than 2.7 billion pounds a year -- that it is causing tension with the Treasury, the report from the National Audit Office (NAO) suggests. Officials from finance ministry told the NAO it was "not always clear" how Sellafield made decisions, the report reveals. Criticisms of its costs and processes come as the chancellor, Rachel Reeves, prepares to plug a hole of about 40 billion pounds in her maiden budget. Gareth Davies, the head of the NAO, said: "Despite progress achieved since the NAO last reported, I cannot conclude Sellafield is achieving value for money yet, as large projects are being delivered later than planned and at higher cost, alongside slower progress in reducing multiple risks." He added: "Continued underperformance will mean the cost of decommissioning will increase considerably, and 'intolerable risks' will persist for longer." David Peattie, the NDA's chief executive, said: "Sellafield is one of the most complex environmental programs in the world. We're proud of our workforce and achievements being made, including the unprecedented retrieval of legacy waste from all four highest hazard facilities. But as the NAO rightly points out there is still more to be done. This includes better demonstrating we are delivering value for money and the wider significant societal and economic benefits through jobs, the supply chain and community investments."

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Android 16 Will Launch Earlier Than Usual

Par : BeauHD
31 octobre 2024 à 23:20
Google is advancing the release timeline for Android 16, shifting it to the second quarter of 2025 to better align with new device launches and accelerate access to its latest AI and machine learning resources. It should also "enable app creators and phone companies to prepare their products for the new software more quickly," reports CNET. From the report: [I]n a big-picture sense, the change could help facilitate a new wave of apps with more AI integration, considering developers will get access to Google's latest machine learning and AI resources even sooner. "We're in a once-in-a-generation moment to completely reimagine what our smartphones can do and how we interact with them," Google's Seang Chau, who took on the role of vice president and general manager of the Android Platform earlier this year, said in an interview with CNET. "It's a really exciting time for smartphones, and we've been putting a lot of thought into what we want to do next with them." In addition to moving up the major release, Google will roll out a minor update in the fourth quarter of 2025 with feature updates, optimizations and bug fixes. It's a notable switch from Google's usual release timeline, but it's just one of several changes the company has made to the way it distributes Android updates in an effort to add features more frequently. [...] "Things are moving quite fast in the AI world right now," Chau said. "So we want to make sure that we get those developer [application programming interfaces], especially around machine learning and AI, available to our developers so they can build these capabilities faster and get them out to our users faster."

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Want To Keep Getting Windows 10 Updates? It'll Cost You $30

Par : BeauHD
31 octobre 2024 à 22:40
With Windows 10 support set to expire on October 14, 2025, Microsoft is offering a one-time, one-year Extended Security Updates plan for consumers. "For $30, you'll receive 'critical' and 'important' security updates -- basically security patches that will continue to protect your Windows 10 PC from any vulnerabilities," reports PCWorld. "That $30 is for one year's worth of updates, and that's the only option at this time." From the report: Microsoft has been warning users for years that Windows 10 support will expire in 2025, specifically October 14, 2025. At that point, Windows 10 will officially fall out of support: there will be no more feature updates or security patches. On paper, that would mean that any Windows 10 PC will be at risk of any new vulnerabilities that researchers uncover. Previously, Microsoft had quietly hinted that consumers would be offered the same ESU protections offered to businesses and enterprises, as it did in December 2023 and again in an "editor's note" shared in an April 2024 support post, in which the company said that "details will be shared at a later date for consumers." That time is now, apparently. Back in December 2023, Microsoft offered the ESU on an annual basis to businesses for three years, one year at a time. The fees would double each year, charging businesses hundreds of dollars for the privilege. Consumers won't be offered the same deal, as a Microsoft representative said via email that it'll be a "one-time, one-year option for $30."

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Ghost Jobs Are Wreaking Havoc On Tech Workers

Par : BeauHD
31 octobre 2024 à 22:00
An anonymous reader quotes a report from SFGATE: If you've recently been laid off and have started the arduous process of looking for a new job, you've probably seen them on networking platforms like LinkedIn: postings for roles that are 30 days old, maybe more, with suspiciously wide salary ranges. They usually have hundreds, or even thousands, of hopeful applicants vying for the same position, but if you do a quick cross-check and notice that the role isn't posted on the company's actual website -- or any of their social media pages -- you should probably stop drafting that cover letter, because it's possible they're not hiring at all. "Ghost jobs," or ads for positions that aren't actually open, are a common phenomenon in the tech industry, which has been plagued by layoffs and budget cuts over recent years. As unemployed workers struggle to regain their footing, recruiters and career coaches who spoke with SFGATE warned that these fake jobs posted by real companies serve multiple, sometimes insidious purposes. According to a 2024 survey from MyPerfectResume, 81% of recruiters admitted to posting ads for positions that were fake or already filled. While some respondents said employers did it to maintain a presence on job boards and build a talent pool, it's also used to commit psychological warfare: 25% said ghost jobs helped companies gauge how replaceable their employees were, while 23% said it helped make the company appear more stable during a hiring freeze. Another damning 2024 report from Resume Builder said that 62% companies posted them specifically to make their employees feel replaceable. They also made ads to "trick overworked employees" into believing that more people would be brought on to alleviate their overwhelming workload. After interviewing 1,641 hiring managers, Resume Builder researchers found that 40% of employers posted fake job listings in 2024, and that three in 10 currently had ghost jobs listed. The idea to post them mostly trickled down from HR, followed by senior management and executives, their June 2024 article continued. Though the listings were posted on multiple hiring platforms, the majority of them appeared on LinkedIn and the companies' websites. Evidence suggests this trend is taking hold throughout the Bay Area, too. A collaborative document circulating online reveals a growing list of employers accused of posting ghost jobs. Many of them, it turns out, are tech companies with offices based in California.

Read more of this story at Slashdot.

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