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MIT Simplifies Design Process For 3D Printing 20

An anonymous reader writes: New software out of MIT and the Interdisciplinary Center Herzliya in Israel takes CAD files and automatically builds visual models that users can alter with simple, visual sliders. It works by computing myriad design variations before a user asks for them. When the CAD file is loaded, the software runs through a host of size variations on various properties of the object, evaluating whether the changes would work in a 3D printer, and doing the necessary math to plan tool routes. When a user moves one of the sliders, it switches the design along these pre-computer values. "The system automatically weeds out all the parameter values that lead to unprintable or unstable designs, so the sliders are restricted to valid designs. Moving one of the sliders — changing the height of the shoe's heel, say, or the width of the mug's base — sweeps through visual depictions of the associated geometries."

There are two big drawbacks: first, it requires a lot of up-front processing power to compute the variations on an object. Second, resolution for changes is fixed if you want quick results — changing the design for a pair of 3D-printed shoes from size 8 to size 9 might be instantaneous, but asking for a shoe that's a quarter of a millimeter longer than a size 8 would take several minutes to process. But for scrolling through the pre-computed design changes, the software can present "in real time what would take hours to calculate with a CAD program," and without the requisite experience with CAD.

Solar Windows Could Help Power Buildings 47

Lucas123 writes: Several companies are now beginning to roll out translucent photovoltaic films or solar cells embedded in windows that can supplement a significant amount of energy in the buildings where they're used. SolarWindow Technologies, for example, is preparing to launch a transparent product made with organic PVs, while another company, Solaria, is cutting solar cells into thin strips and embedding them in windows. Both companies admit their products can't produce the 20% efficiency ratings of today's best rooftop solar panels, but they say that's not their objective. Instead, the companies are looking to take advantage of millions of skyscraper windows that today are simply unused real estate for renewable energy. One company is aiming at supplementing 20% to 30% of a skyscrapers power requirements. Meanwhile, universities are also jumping into the solar window arena. Oxford University has spun off a PV window company that produces semi-transparent solar cells made of semi-transparent perovskite oxide that has achieved a 20% solar energy efficiency.

Slowing Wind Energy Production Suffers From Lack of Wind 182

HughPickens.com writes: Gregory Meyer reports at the Financial Times that electricity generated by U.S. wind farms fell 6 per cent in the first half of the year, even as the nation expanded wind generation capacity by 9 per cent. The reason was some of the softest air currents in 40 years, cutting power sales from wind farms to utilities. The situation is likely to intensify into the first quarter of 2016 as the El Niño weather phenomenon holds back wind speeds around much of the U.S. "We never anticipated a drop-off in the wind resource as we have witnessed over the past six months," says David Crane. Wind generated 4.4 per cent of US electricity last year, up from 0.4 per cent a decade earlier. But this year U.S. wind plants' "capacity factor" has averaged just a third of their total generating capacity, down from 38 per cent in 2014.

EIA noted that slightly slower wind speeds can reduce output by a disproportionately large amount. "Capacity factors for wind turbines are largely determined by wind resources," says a report from the Energy Information Administration. "Because the output from a turbine varies nonlinearly with wind speed, small decreases in wind speeds can result in much larger changes in output and, in turn, capacity factors." In January of 2015, wind speeds remained 20 to 45 percent below normal on areas of the west coast, but it was especially bad in California, Oregon, and Washington, where those levels dropped to 50 percent below normal during the month of January.

The Speakularity, Where Everything You Say Is Transcribed and Searchable 73

An anonymous reader sends an article from Nautilus about the possible future of speech recognition software. Today, hundreds of millions of people are walking around with devices that can not only record sound, but also do a decent job of turning spoken word into searchable text. The article makes the case that the recording and transcription of normal conversation will become commonplace, sooner or later. Not only would this potentially make a lot more interesting discussion available beyond earshot, but it could also facilitate information retrieval on a personal level.

The article makes an analogy with email — right now, if you communicated with somebody through email a decade ago, you don't have to remember the specifics — as long as you didn't delete it or switch email providers, you can just search and look at exactly what was said. Of course, the power of such technology comes with trade-offs — not only would we be worried about the obvious privacy issues, but many people may feel restricted by always "performing" for the microphones. Some researchers also worry that if we have technology to remember for us, we'll put much less effort into remembering things ourselves.

Chrome 45 Launches, Automatically Pauses Less Important Flash Content, Like Ads 87

An anonymous reader writes: Google today launched Chrome 45 for Windows, Mac, Linux, and Android with some expected changes and new developer tools. First and foremost, Chrome now automatically pauses less important Flash content (rolling out gradually, so be patient). This has been a longtime coming from both Google and Adobe, with the goal to make Flash content more power-efficient in Chrome: In March, a setting was introduced to play less Flash content on the page, but it wasn't turned on by default, and in June, the option was enabled in the browser's beta channel. Now it's being turned on for everyone.

Citi Report: Slowing Global Warming Could Save Tens of Trillions of Dollars 248

Layzej writes with news carried by The Guardian about a report published by the Global Perspectives & Solutions division of Citibank (America's third-largest bank) examining the costs and benefits of a low-carbon future. The report examined two hypothetical futures: one "business as usual," and the other (the "Action" scenario) which includes an aggressive move to reduce energy use and carbon emission. From the article: "One of the most interesting findings in the report is that the investment costs for the two scenarios are almost identical. In fact, because of savings due to reduced fuel costs and increased energy efficiency, the Action scenario is actually a bit cheaper than the Inaction scenario. Coupled with the fact the total spend is similar under both action and inaction, yet the potential liabilities of inaction are enormous, it is hard to argue against a path of action." But there will be winners and losers, says the report: "The biggest loser stands to be the coal industry, where we estimate cumulative spend under our Action scenario could be $11.6 trillion less than in our Inaction scenario over the next quarter century, with renewables, wind and nuclear (as well as energy efficiency) the main beneficiaries."

Gaming Computers Offer Huge, Untapped Energy Savings Potential 205

Required Snark writes: According to Phys.org, a study by Evan Mills at Berkeley Lab shows that "gamers can achieve energy savings of more than 75 percent by changing some settings and swapping out some components, while also improving reliability and performance" because "your average gaming computer is like three refrigerators." Gaming computers represent only 2.5 percent of the global installed personal computer (PC) base but account for 20 percent of the energy use. Mills estimated that gaming computers consumed 75 TWh of electricity globally in 2012, or $10 billion, and projects that will double by 2020 given current sales rates and without efficiency improvements. Potential estimated savings of $18 billion per year globally by 2020, or 120 terawatt hours (TWh) are possible. Mills started the site GreeningtheBeast.org. You can read the full paper as a PDF.

Plunging Battery Prices Expected To Spur Renewable Energy Adoption 130

Lucas123 writes: Lithium-ion (Li-on) and flow battery prices are expected to drop by as much as 60% by 2020, making them far more affordable for storing power from distributed renewable energy systems, such as wind and solar, according to a recent report by Australia's Renewable Energy Agency (ARENA). The 130-page report (PDF) shows that Li-on batteries will drop from $550 per kilowatt hour (kWh) in 2014 to $200 per kWh by 2020; and flow battery prices will drop from $680 per kWh to $350 per kWh during the same time. Flow batteries and Li-ion batteries work well with intermittent energy sources such as solar panels and wind turbines because of their ability to be idle for long periods without losing a charge. Both battery technologies offer unique advantages in that they can easily be scaled to suit many applications and have high cycle efficiency, the ARENA report noted. Li-ion batteries more easily suit consumer market. Flow batteries, which are less adaptable for consumer use because they're typically too large, scale more easily because all that's needed to grow storage capacity is more electrolyte liquid; the hardware remains the same.

OnHub Router -- Google's Smart Home Trojan Horse? 123

An anonymous reader writes: A couple weeks ago, Google surprised everybody by announcing a new piece of hardware: the OnHub Wi-Fi router. It packs a ton of processing power and a bunch of wireless radios into a glowy cylinder, and they're going to sell it for $200, which is on the high end for home networking equipment. Google sent out a number of units for testing, and the reviews are starting to come out. The device is truly Wi-Fi-centric, with only a single port for an ethernet cable. It runs on a Qualcomm IPQ8064 dual-core 1.4GHz SoC with 1GB of RAM and 4GB of storage. You can only access the router's admin settings by using the associated app on a mobile device.

OnHub's data transfer speeds couldn't compete with a similarly priced Asus router, but it had no problem blanketing the area with a strong signal. Ron Amadeo puts his conclusion simply: "To us, this looks like Google's smart home Trojan horse." The smartphone app that accompanies OnHub has branding for something called "Google On," which they speculate is Google's new hub for smart home products. "There are tons of competing smart home protocols out there, all of which are incompatible with one another—imagine HD-DVD versus Blu-Ray, but with about five different players. ... Other than Bluetooth and Wi-Fi, everything in OnHub is a Google/Nest/Alphabet protocol. And remember, the "Built for Google On" stamp on the bottom of the OnHub sure sounds like a third-party certification program."

Ask Slashdot: Suggestions For Taking a Business Out Into the Forest? 146

An anonymous reader writes: I'm a huge fan of primitive survival reality TV. I am also self-employed in web troubleshooting and hosting services. I have to be available 24/7, but a lot of my work is just being online for a few minutes at a time. I often think about taking my business 'outdoors', camping, 3-7 days or so at a time — but staying online. Has anyone had experience with this? How did you do it, in terms of internet connectivity and portable power? Satellite internet or long distance Wi-Fi antennaes and a very tall pole? I've looked at some portable power stations with solar attachments, but the idea of hand-cranking to recharge if it's overcast isn't fun, after all, the point is to relax. But I'm willing to manually recharge if it's realistic (would prefer pedaling though!) I happen to have a Toughbook CF-52 (I just thought it was cool) but I may need to replace that with a more eco-friendly laptop as well. Thanks!

AMD's R9 Fury On Open-Source: Prepare for Disappointment, For Now 43

An anonymous reader writes: With Linux 4.3 AMD is adding the initial open-source driver for the R9 Fury graphics cards. Unfortunate for Linux gamers, the R9 Fury isn't yet in good shape on the open-source driver and it's not good with the Catalyst Linux driver either as previously discussed. With the initial code going into Linux 4.3, the $550 R9 Fury runs slower than graphics cards like the lower-cost and older R7 370 and HD 7950 GPUs, since AMD's open-source developers haven't yet found the time to implement power management / re-clocking support. The R9 Fury also only advertises OpenGL 3.0 support while the hardware is GL4.5-capable and the other open-source AMD GCN driver ships OpenGL 4.1. It doesn't look like AMD has any near-term R9 Fury Linux fix for either driver, but at least their older hardware is performing well with the open-source code.

MIAOW Open Source GPU Debuts At Hot Chips 45

alexvoica writes: The first general-purpose graphics processor (GPGPU) now available as open-source RTL was unveiled at the Hot Chips event. Although the GPGPU is in an early and relatively crude stage, it is another piece of an emerging open-source hardware platform, said Karu Sankaralingam, an associate professor of computer science at the University of Wisconsin-Madison. Sankaralingam led the team that designed the Many-core Integrated Accelerator of Wisconsin (MIAOW). A 12-person team developed the MIAOW core in 36 months. Their goal was simply to create a functional GPGPU without setting any specific area, frequency, power or performance goals. The resulting GPGPU uses just 95 instructions and 32 compute units in its current design. It only supports single-precision operations. Students are now adding a graphics pipeline to the design, a job expected to take about six months.

How Close Are We, Really, To Nuclear Fusion? 395

StartsWithABang writes: The ultimate dream when it comes to clean, green, safe, abundant energy is nuclear fusion. The same process that powers the core of the Sun could also power everything on Earth millions of times over, if only we could figure out how to reach that breakeven point. Right now, we have three different candidates for doing so: inertial confinement, magnetic confinement, and magnetized target fusion. Recent advances have all three looking promising in various ways, making one wonder why we don't spend more resources towards achieving the holy grail of energy.

Microsoft Builds Open-Source Browser Using HTML, JavaScript, and CSS 73

An anonymous reader writes: Microsoft's new browser, Edge, has a new rendering engine, EdgeHTML. Like Edge, the new rendering engine is only available in Windows 10, but it does more than just power the company's new browser: It's also readily available to developers. To show off what EdgeHTML can do, Microsoft has built a browser using predominantly JavaScript, HTML, and CSS. Next, the company released the browser on the Windows Store and the sample code on GitHub.

Canadian Nuclear Accident Study Puts Risks Into Perspective 165

An anonymous reader writes: A Canadian Nuclear Safety Commission (CNSC) study has concluded that there would be no detectable increase in cancer risk for most of the population from radiation released in a hypothetical severe nuclear accident. The CNSC's study is the result of a collaborative effort of research and analysis undertaken to address concerns raised during public hearings on the environmental assessment for the refurbishment of Ontario Power Generation's (OPG's) Darlington nuclear power plant in 2012. The draft study was released for public consultation in June 2014. Feedback from the Commission itself and comments from over 500 submissions from the public, government and other organizations have been incorporated in the final version. The study involved identifying and modelling a large atmospheric release of radionuclides from a hypothetical severe nuclear accident at the four-unit Darlington plant
Operating Systems

Contiki 3.0 Released, Retains Support For Apple II, C64 44

An anonymous reader writes that on Wednesday the Contiki team announced the release of Contiki 3.0, the latest version of the open source IoT operating system. The 3.0 release is a huge step up from the 2.x branch and brings support for new and exciting hardware, a set of new network protocols, a bunch of improvements in the low-power mesh networking protocols, along with a large number of general stability improvements. And, yes, the system still runs on the Commodore 64/128, Apple II, Atari.

In Praise of the Solo Programmer 113

HughPickens.com writes: Jean-Louis Gassée writes that once upon a time, we were awestruck by the solo programmer who could single-handedly write a magnum opus on a barebones machine like the Apple ][ with its 64 kilobytes of memory and an 8-bit processor running at 1MHz. Once such giant was Paul Lutus, known as the Oregon Hermit, who won a place next to Jobs and Wozniak in the Bandley Drive Hall of Fame for his Apple Writer word processor. "Those were the days Computers and their operating systems were simple and the P in Personal Computers applied to the programmer," writes Gassée. "There's no place for a 2015 Paul Lutus. But are things really that dire?"

As it turns out, the size and complexity of operating systems and development tools do not pose completely insurmountable obstacles; There are still programs of hefty import authored by one person. One such example is Preview, Mac's all-in-one file viewing and editing program. The many superpowers of Apple's Preview does justice to the app's power and flexibility authored by a solo, unnamed programmer who has been at it since the NeXT days. Newer than Preview but no less ambitious, is Gus Mueller's Acorn, an "Image Editor for Humans", now in version 5 at the Mac App Store. Mueller calls his Everett, WA company a mom and pop shop because his spouse Kristin does the documentation when she isn't working as a Physical Therapist. Gus recently released Acorn 5 fixing hundreds of minor bugs and annoyances. "It took months and months of work, it was super boring and mind numbing and it was really hard to justify, and it made Acorn 5 super late," writes Mueller. "But we did it anyway, because something in us felt that software quality has been going downhill in general, and we sure as heck weren't going to let that happen to Acorn."

Many Drivers Never Use In-Vehicle Tech, Don't Want Apple Or Google In Next Car 417

Lucas123 writes: Many of the high-tech features automakers believe owners want in their vehicles are not only not being used by them, but they don't want them in their next vehicle, according to a new survey by J.D. Power. According to J.D. Power's 2015 Driver Interactive Vehicle Experience (DrIVE) Report, 20% of new-vehicle owners have never used 16 of 33 of the latest technology features. The five features owners most commonly report that they "never use" are in-vehicle concierge (43%); mobile routers (38%); automatic parking systems (35%); heads-up display (33%); and built-in apps (32%). Additionally, there are 14 technology features that 20% or more of owners don't even want in their next vehicle. Those features include Apple CarPlay and Google Android Auto, in-vehicle concierge services and in-vehicle voice texting. When narrowed to just Gen Yers, the number of vehicle owners who don't want entertainment and connectivity systems increases to 23%.

Why Modular Smartphones Are Such a Nightmare To Develop 111

itwbennett writes: Last week Google postponed tests of its Project Ara until next year. Mikael Ricknäs has written about why developing such devices is particularly difficult. The biggest challenge, writes Ricknäs, 'is the underlying architecture, the structural frame and data backbone of the device, which makes it possible for all the modules to communicate with each other. It has to be so efficient that the overall performance doesn't take a hit and still be cheap and frugal with power consumption.' For more on Project Ara and its challenges, watch this Slashdot interview with the project's firmware lead Marti Bolivar.