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User: mattr

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  1. Wrong direction? on iRobot's Robot Doc Is Ready To Heal You · · Score: 1

    tl;dr. If it is a telepresence robot, it should have a movable screen+camera on an arm that can lower to patient's head height when standing/sitting and move around the body. That and a document scanner and usb reader. And maybe infrared or ultrasound scanner if you want to augment senses. Instead it looks like they intentionally make it look tall and authoritarian. Perhaps it would be useful as a way to treat people in areas where there are no specialists. It could be staffed 24x7. Of course the idea that it stands in for a physical GP on the spot sounds pretty ridiculous.

  2. "With this combination, 4% power-conversion efficiency for solution-processed and visibly transparent polymer solar cells has been achieved."

    Okaay...

  3. Re:Nokia N900 no contest on Ask Slashdot: Scripting-Friendly Smartphones? · · Score: 1

    I have used sl4a on my HTC EVO 4G Wimax. But I found that it is one of the models that will not work with a bluetooth silicone keyboard. This really burns me up and I have tried a couple in stores.
    For one model, the market app would not install.
    Another model, it would pair but not connect.
    If anyone knows a keyboard (silicone or not) that would work with it..
    Anyway you should note there are issues such as battery and what happens when connectivity is lost.
    For example in a gps tracking app, you would want to buffer and send a batch of observations at once.

  4. Endless hard disk on Ask Slashdot: Storing Items In a Sealed Chest For 25 Years? · · Score: 1

    This is just an idea I'm throwing out there, based on the idea of a networked disk.
    You could have a legal firm tasked with updating the media every 5 years in perpetuity.
    Of course if you actually kept a disk connected to the Internet it could be hacked, this is probably 100% certain by the year you are planning to open it. So you could instead put a usb drive in a bank vault. Perhaps put a laptop in too.
    Then every 5 or 10 years, someone comes along to copy it onto the latest media type. Perhaps one day soon we will even have a Library of Congress data vault where people can pay to store data and have it preserved. If such exists, it can also be used in parallel.
    I am thinking it is going to be much more secure to put things into a vault than burying it in the ground and wondering if random chemical processes will destroy it or not. It sounds very possible you could even have flooding from rising seas or natural disasters from global warming, get zapped from EMF bombs or who knows.
    So while burying a time capsule is romantic if you want something to be safe maybe you should at the same time, distribute it digitally in commercial physical structures.

  5. Macro artifacts? on New Type of Chemical Bond Predicted To Exist In White Dwarfs · · Score: 1

    IANAP but it sounds like this suggests white dwarfs could be surrounded by something like
    - partial shells and tissues of hydrogen, helium and perhaps other molecules with the necessary geometries
    - onion like concentric shells
    - or even if constantly jostling and not broadly connected, there are a lot of molecules all lined up end to end like antenna wires
    - possibly coronal ejections would be made of such tissues, and would become disrupted with increasing distance from start

    I wonder if any kind of observation could prove/disprove any of these conceivable structures.

  6. Re:Anybody working on a more comprehensive one? on Meet the Robisons and Their Low-Cost RepRap Kit (Video) · · Score: 1

    Thank you very much, that is cool!

  7. Re:Anybody working on a more comprehensive one? on Meet the Robisons and Their Low-Cost RepRap Kit (Video) · · Score: 1

    This wasn't a deeply thought proposed scale and the writing is vague, sorry.
    The stage 3 I suggested above means that the assembler takes in raw materials, in other words no preassembled parts.
    I was imagining a bunch of racks that can hold simple motors, switches, ic chips and other complex parts that a stage 2 replicator would be able to automatically select and assemble into the finished product.
    For biological systems of course there is a gray area between stage 2 and stage 3, depending on if you consider for example vegetable protein a complex preassembled part. Apparently humans must ingest protein to survive, I just googled a little. Still I would lean toward calling humans stage 3 assemblers since for a few reasons:
    - humans I think take apart everything they ingest and rebuild from molecules up. So amino acids are raw materials.
    - humans can build the most complex parts, like an eye, a knee or a brain without needing to ingest eyes, knees or brains.
    - humans actually have inside them nanoscale programmed molecular assemblers so even if you don't accept human as stage 3 assemblers because proteins are complex, they contain stage 3 assemblers themselves. I'm thinking of cellular nuclei, ribosomes, etc.

  8. Anybody working on a more comprehensive one? on Meet the Robisons and Their Low-Cost RepRap Kit (Video) · · Score: 1

    A post on recent /. thread said: "RepRaps can make only a tiny fraction of the parts needed to build another RepRap. They can't build transistors, microcontrollers, capacitors, stepper motors, wire, and so forth."

    So I am just wondering is anybody working on an open source system that really can do all that? I guess it works like this:
    stage 1 replicator - means it makes some limited number of parts, you assemble
    stage 2 replicator - requires you provide a supply of special parts to the machine, and it assembles a final product making what it can.
    stage 3 replicator - it makes everything from scratch (raw materials) and it assembles.

  9. Re:Math, Science, Engineering and Tech on Obama Wants $1 Billion For "Master Teachers Corps" · · Score: 1

    Global Competitiveness.
    And law, sports and pharma already have plenty of money..
    I was thinking history should get funding but then again having the national government pick and award history teachers doesn't sound like a good idea.
    Biggest problem is the pay raise is not much and they have to do more work when already overworked..

  10. Safety of employees on Google Joining Fight Against Drug Cartels · · Score: 1

    It sounds courageous but this last step is a doozy. Not well thought out at all. Why on Earth did Google do this so publicly?

    Think about it from the perspective of someone who wants to work at Google, "geek heaven".
    If they are going to take on big rich gangster cartels like the Zetas who apparently own a whole country and love making examples of ordinary people even reaching into the U.S.A., they become targets too. Big soft squishy targets, very public, scattered in low security offices and conferences all around the world.

    The employees of Google did not sign up to become an organized crime and counter-terror military task force. They don't carry guns or wear shields. So let's say Google starts actually making a difference. What happens when the first Google employees get killed?
    Likely 90% of the Google employees who know about the program and are happy with it are naive about what it could mean to them personally.

  11. Some silly questions on Interviews: Ask Physicist Giovanni Organtini About the Possible Higgs Boson Disc · · Score: 1

    Please pardon my deep lack of understanding. If any of these questions are worthy please provide your ideas on them.
    First, I read the following "Just as the electromagnetic field is higher near heavily charged particles, the Higgs field should be higher near heavy particles. For instance, near a Z boson—an object that accelerators should be able to produce in great abundance in the near future—the Higgs field is changed. The Z boson is unstable. When it decays into lighter particles, the disturbance in the Higgs field must take on another form. It might become a travelling disturbance in the Higgs field itself—a packet of energy propagating outward-a Higgs boson. The Higgs particle is to the pervasive mass-generating Higgs field what the photon is to electromagnetic fields." - http://en.wikipedia.org/wiki/Introduction_to_the_Higgs_field

    So...

    - What would the Higgs field intensity be like near some very dense matter like neutronium? Or near a black hole? How would high HF intensity be detectable?

    - Imagine a spinning dense vortex made of Higgs bosons, like a whirlpool in the Higgs field. The bosons appear and die quickly but still are interacting with each other. Would there form a depression as in a whirlpool where the field intensity drops drastically or is this just a bad metaphor?

    - Are there any things you could imagine that would cause the prevailing Higgs field intensity to drop or rise?

    - Can you please explain wave propagation in the Higgs field and how such waves might conceivably be detected? For example what would be the analogue of an antenna to capture EM waves?

    - Would an incoming wavefront of very near lightspeed higgs bosons (which have not yet decayed due to their relativistically slowed clocks) cause nearby particles to change mass briefly, and if so would such fluctuations in their mass cause a gravity wave signal to be emitted?

    - Could a particle that interacts strongly with the Higgs field being pushed to high speeds create a disturbance similar to wake, transverse waves, sonic boom or a swept out tunnel in the Higgs Field condensate that could affect the inertial mass of other particles nearby or closely following it?

    - Imagine as a thought experiment a spaceship that can project a very high energy density ahead to melt the QCD vacuum in front of it and tunnel through the Higgs field condensate which would then reform behind the passing ship. Would the ship be able to to accelerate more quickly and would it still be limited by c?

  12. First time I came across the usage. Thought someone was being dumb, was just me. Thanks.
    Also today first time came across the new word copyvios (copyright violations, thanks wiktionary).
    Language is evolving very quickly this week.

  13. Slippery slope evident on Facebook Scans Chats and Posts For Criminal Activity · · Score: 2

    Of course you can't say anything bad because you would be condoning statutory rape.
    But Facebook is special. They should be under stricter rules than a common carrier even, because they log you in everywhere and know so much about you.
    How to catch a statutory rapist? Heavily scan all interactions between minors and adults (FB knows your age) and if any sex-related words hit the filter you have a potential crime. Have an employee read the log to be sure, or just outsource it. Maybe the church or young police trainees will do it for free.
    You could write a smart filter to catch drug dealing, or to catch attempted suicide, and so on.
    It should be trivial to write a smart filter for any given crime, such as drug dealing, suicide, or perhaps "not crime but against a corporation's interest". Call it facecrime.
    For example it is probably trivial for FB to know your employer. Than heavily scan all interactions between competitors' employees. If any suspicious words, perhaps work-related terms appear then there is potential crime again. The RIAA would love this too.
    This is such an endlessly useful and potentially lucrative area that I could see FB gaining an income stream from the kind of companies that currently are politicians' major income sources.

  14. Looks like a lot of fun on Startup Aims For $99, Android-Powered TV Game Console · · Score: 1

    These guys are heroes and obviously hit a nerve - they are at 2.95 MILLION DOLLARS with 28 DAYS TO GO!!!

    This is great, because it sounds like they really want to listen to developers and build a hot community.
    The controller sounds neat.
    I'd like to see more RAM first. More CPU would also be nice. But on the other hand they've decided this is the sweet spot to make it possible and it sounds like they are right.
    If they would make an even bigger commitment to being open, and put some money into even hiring experts to make libraries and improved development kits that would make it easier for indies to make higher quality titles easily that would be interesting. I'd like to see a media browser that handles local and networked storage too. And is there a microphone?
    The sky seems to be the limit.

  15. Re:Hmmm ... on Steve Ballmer: We Won't Be Out-Innovated By Apple Anymore · · Score: 1

    I tried but the main graphic which is apparently an ad on the page does not display on Chrome / Mac OS X.

  16. Editors: Read so you don't commit libel! on Samsung Blames Galaxy SIII Burn On "External Energy Source" · · Score: 0

    Considering TFA and the use of the word "blames" and the quotes around "external energy source" I would say Slashdot is very close if not smack on the dot of committing libel.

    A wet phone was put in a microwave oven. Slashdot's story title suggests the manufacturer is an outright liar.

  17. On the fly mapping with environmental data on Ask Dr. Ramsey Faragher About Navigation/Positioning Technology · · Score: 1

    You mentioned earlier the domination of signal strength when indoors. Can you also use patterns in observed environmental data for automated mapping and exploration?

    For example a robot exploring a cave or a large indoor structure like a power plant might be able to even use information such as ambient temperature / humidity, echoic nature of surroundings, or patterns in ambient air pressure / acoustic input from machinery or the sound of treads against floor.

    Also someone was skeptical about using stars to navigate in the day. However radio telescopes can make observations in the daytime, which seems to be the ultimate sensor for your platform. Would your system work to find landmarks underwater too?

  18. Re:Higgs Mass predicted by the 4 Color Theorem 200 on LHC Discovers New Particle That Looks Like the Higgs Boson · · Score: 1

    Or as Resonaance says, Physics Works, Bitches!!

  19. Re:The search for... on SETI Running Out of Money · · Score: 1

    Its discovery was announced an hour ago.

  20. Re:What to do about it? on Nokia: Google's Nexus 7 Tablet Infringes Our Patents · · Score: 1

    Make a SuperPac like Colbert

  21. Re:Who is this for? on Cubify 3D Printers Aren't Just for Squares (Video) · · Score: 1

    Schools?

  22. WCPGW on "Mini-Factories" To Make Medicine Inside the Body · · Score: 1

    What could possibly go wrong. This is cool and wave of future but I'll sit back as long as I can to wait for bug testing.

  23. Keyboard on Google Trying New Strategy to Fix Fragmentation · · Score: 0, Offtopic

    Simple question here. I attempted to buy a silicone keyboard for a business trip but it won't work with my HTC Evo 4G (ISW11HT). Works with other android devices. Known problem apparently. I tried it in the store and it will pair but not connect. The silicone keyboard app also had trouble installing.

    So is it really impossible to patch this thing?

  24. Re:I see a few problems with this on Researchers Spray-Paint Batteries Onto Almost Any Surface · · Score: 1

    It is also difficult to recycle the component materials.

  25. Close relative lived there on Larry Ellison Buys His Own Hawaiian Island · · Score: 1

    Never been myself but from what I remember it is beautiful and dull, with both sea, rain forest and arid mountain climes, and a hotel where Bill Gates got married with a pretty good restaurant in it. That and a lot of pineapples. My very leaky memory says there were 600 people on the island but I could be wrong. IANAHI