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User: Latent+Heat

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  1. What's so funny, dude?

    Yes, the people of Mexico should have a proper level of concern if there is an outbreak of illness among their northern neighbors that could affect them.

  2. In evaluation-driven U.S. culture on Chinese Scientist Who Gene-Edited Babies Fired by University (reuters.com) · · Score: 1

    A student doesn't need to shimmy up to the window to turn in a late assignment because the instructor will accept a late assignment, on any excuse offered or for no excuse at all?

  3. around here.

  4. Electric vs gasoline energy on Under Current Policies, Residential Batteries Increase Emissions In Most Cases (arstechnica.com) · · Score: 1

    If you are basing your Bolt getting "fuel economy better than .. any ICE .. not even close" on the EPA rating of 100-130 eMPG?

    That rating assumes 100% efficient conversion of heat energy into electricity delivered through the power grid to the battery posts in your car.

    Yes, I am aware that some electric power comes from zero-carbon sources and that 60% conversion efficiency is claimed for the best combined-cycle natural gas-fired power plants.

    The claim that you are getting most of your power from green sources such as solar needs to take into account that in the absence of grid-scale energy storage, solar or wind can make up, perhaps, no more than 20% of the electric power mix? That the 100% green power allocated to you by paying some added fee needs fossil backup power to maintain a stable grid?

    You claim to have saved 400 gallons in gasoline for not driving 8000 miles in something other than a Bolt? The Bolt is not a very large vehicle, and there are a lot of vehicles that size that can be expected to average at least 30 MPG over the 20 MPG you are assuming?

    But you are "de-rating" the EPA eMPG rating for comparison with an ICE by at least some factor?

    Aren't you?

  5. Riddle me this, Batman! on Julia Language Co-Creators Win James H. Wilkinson Prize For Numerical Software (mit.edu) · · Score: 1

    Is Julia a Lisp?

    https://juliacomputing.com/blo...

    If it is, how does it distinguish itself from previous attempts at Lisp Without So Darned Many Parenthesis?

    The beloved C language and Unix OS (FreeBSD, Linux being what is current) were once characterized as the crude, Worse-is-Better New Jersey approach (Bell Labs) that "gets stuff done" as opposed the MIT approach that wins the sort of awards that are the subject of the GP.

    The closest anyone had come to turning the tide on Worse-is-Better is Java, or at least until January 2019 when Mr. Ellison starts charging rent, which isn't a Lisp. Whereas Java has light-years of distance in its semantics from C, it adopted its syntax without apology as a way of popularizing it on the idea that C-style curly braces for block delimiter, ordinary parenthesis in for and if statements, semicolon statement terminator had become so pervasive so why buck-the-standard?

    Java is also not a Lisp -- it has its clunky Reflection for duck-type method invocations along with class loaders, that allow you to update a running application without taking it down by loading a replacement class and then let the old class get garbage collected when all of the old objects are dereferenced -- but it doesn't go full MIT because everyone knows you don't go full MIT and expect wide adoption?

    OK, I understand the shade thrown on Larry Ellison, but this Julia thing is trying to be the Next Java judging by all the jokes cracked on Slashdot of the next thing being corporate recruiters requiring 10-years experience in it to land a job? That was originally a Java joke.

    So what does Julia do better than Java (Juptyer notebook == Java applet?)? How long will it be before Julia becomes a security risk that campus sysadmins will attempt to wipe from university servers used in instruction?

    If MATLAB is what Julia is meant to supersede, MATLAB is Java. The reason MATLAB is so slow to launch is that it is loading a JVM and a whole stuff-ton of Java class libraries? That the Command Window and Figure Windows are Swing JFrames? That you can create instances of Java classes from the Command Line and invoke their methods? That the Figure Window export to graphics file format choices is implemented with the SLAC/CERN FreeHEP consortium's VectorGraphics Java classes?

    Is the Julia team's idea of a clean-sheet-of-paper design is such a better idea than MATLAB layered on top of Java using the JNI to link to the massive body of FORTRAN and C-language numerical libraries? MATLAB is a repackaging and a rebranding of an enormous amount of an existing software ecosystem.

  6. Movie plot that stretches disbelief on 'My Airbnb Guests Threw a New Year's Party For 300 People' (theguardian.com) · · Score: 1

    Weren't there two movies with this plot?

    One was called "Risky Business", and can anyone answer the name of the other one?

    Bueller? Bueller?

  7. Social Credit System on Tokyo Wants People To Stand on Both Sides of the Escalator (citylab.com) · · Score: 1

    That man with flags is here https://en.wikipedia.org/wiki/...

    And "little" is racist.

  8. Like desktop Linux? on We Should Replace Facebook With Personal Websites (vice.com) · · Score: 1

    Giving too many degrees of freedom, or too much disorganized and useless information, reduces the size of the user base.

    (Ducks. Walks out in a fire-resistant suit.)

  9. Fluorescence, not incandescence on Motion Impossible: Tom Cruise Declares War on TV Frame Interpolation (theguardian.com) · · Score: 2

    The phosphor in a CRT is not a glowing filament with a longish thermal time constant. A closer analogy would be a fluorescent bulb on a magnetic ballast, and those things flicker like crazy. A dude I know, who worked for a state agency promoting energy saving, would visit schools and give out these cardboard wheels you could spin to show how a compact fluorescent on an electronic ballast operating at a much higher frequency didn't do that.

    The support for my hypothesis is comparing a retrace-synched scrolled image on what back in the day was a decent Sony Trinitron CRT 1) at 60 Hz refresh, 2) 120 Hz refresh and 3) 120 Hz but doubling each image to simulate the persistence of an LCD screen at 60 Hz. 120 Hz scrolls blur free, as does 60 Hz but with noticeable flicker on the Sony monitor, but the "double strobe" at 120 Hz simulating a 60 Hz image refresh is unmistakably blurred.

    The Blurbusters agree with me in that they strobe an LED backlight of an LCD to suppress motion blur by simulating a CRT. Much of the discussion is how some really expensive displays intended for vision research do just that, and how this strobing the backlight can be done more cheaply by some hardware hacks. They are not talking about higher screen refresh rates, not about image interpolation, this is just plain getting rid of the sample-and-hold square-step effect.

  10. Blur problem more than slow LCD transitions on Motion Impossible: Tom Cruise Declares War on TV Frame Interpolation (theguardian.com) · · Score: 2

    https://www.blurbusters.com/fa...

    There is more to the motion blur problem than the slow transition times of LCD pixels. Newer monitors have much faster transition times and the problem is still there.

    What I think is happening is that the CRT is producing a kind of impulse sampling of the moving image whereas the LCD is producing zero-order hold (square-step, see https://en.wikipedia.org/wiki/...) output. The human visual centers appear to perceive the "strobed" image of the CRT as smooth motion, the "change-and-hold" image of the LCD as blurred, even at high frame rates and with rapid pixel response.

    The reason I say "kind of impulse sampling" is that the CRT does not flash a sequence of static images the way a film movie projector does. Rather, the CRT conducts a continuous raster scan, with a short blanking during the retrace. Each line of the image gets strobed at the time the scan reaches it, but each line is strobed at a different time instead of the whole image all at once as with a film projector.

    I believe it is that scanning that accounts for the "soap opera effect" of video content recorded on video tape instead of on film. This is already a long while ago that a local TV station had a show-and-tell of this new thing called HDTV at our Engineering campus. The Engineering profs were oohing and ahh-ing about what they thought were amazing images, but I was pointing out the image artifacts (easier to spot in HD!) to the broadcast engineer from the TV station, and finding a receptive audience, he went on at length to explain the difference between Homicide, Life on the Streets, shot on video tape and having the soap opera look, compared with Law and Order, which he explained was shot on 35 mm film and then scan-converted for TV broadcast.

    So, even if the CRT scanned mode of projection differs from the flashed-image mode of film projection, apparently recording the image on film, which records a sequence of still pictures, has a better look than video tape, even when film is played back on a CRT.

    The other problem is that most people viewing video think that HD on a widescreen LCD looks fantastic and don't know what us motion-blur worriers are complaining about. This population includes engineers developing TVs and computer monitors. The only people complaining, it seems are hard-core gamers along with people who have seen the Kay 5500 Sonograph http://jproc.ca/rrp/sonagraph_..., a scientific instrument used in speech science that used a DSP to drive a CRT (at VGA resolution!) that produced a truly remarkable visual effect of a "voice print" rolling past the screen with zero motion blur -- the later software spectrum analyzers producing un-synched scrolls to LCD monitors of much higher frame rate look terrible by comparison.

    With respect to the awful motion blur of LCDs, which other posters here is telling me in not cured by video interpolation, there is an element of what Robert X Cringely described in Accidental Empires, when (back in the day), a techie gushed about the desktop publishing revolutions, showing off the font quality of LaTeX printed at 300 DPI on a LaserJet II, which Cringely looked at in dismay in comparison to what the publishing industry got from photo typesetting.

    DPI and frame rate are important, but if the community is at all serious about further advances in video, especially VR, engineers are going to have to take the physiology of human vision and the motion blur problem into account.

  11. A long time ago, observing a galaxy far, far away on Recent Quasar Observations Support Lots of Mini-Bangs Instead of One Big Bang (wired.com) · · Score: 5, Interesting

    Quasars are long known to be highly variable over a broad range of time scales. That was one of the puzzles "a long time ago" (cough 1970s cough) back in the era after of their discovery, along with their immense power output to account for their apparent luminosity at the cosmological distances indicated by their redshifts. A quasar had to be compact -- Solar System sized to account for their variability, so how can something that small keeping putting out high multiples of a galaxy worth of emissions? This is the context of Halton Arp's theory of quasars-can't-be-what-we-think-they-are.

    Since then, the galaxy-with-a-central-ultra-massive-black-hole model had been advanced to explain their luminosity along with the compactness needed for their rapid variability. Furthermore, this model does not posit that a quasar turns into an ordinary galaxy, rather, that when the quasar runs down, an otherwise ordinary galaxy is what is still there. We were able to observe these galaxies, far, far away, with or without their central quasar shining, on account of the electronics revolution in solid-state imaging greatly extending the reach of the 200 inch Palomar telescope.

    TFA is about how at least one quasar was observed to be even more variable than we thought, which may cause astronomers to formulate new models of their accretion disks. I don't think we have to as of now reinvoke the quasars as white-holes worm-holes models nor revisit Halton Arp's theories.

    I regard Halton Arp as having some interesting observations and some thought provoking theories, I hate it when people smugly proclaim that some radical claim has been "debunked", and the treatment of Dr. Arp is perhaps nothing to be proud of. But it appears Dr. Arp's theories had their day before really good CCD cameras came to be.

  12. How does face recognition even work at all on AI Mistakes Ad On a Bus For an Actual CEO, Then Publicly Shames Them For 'Jaywalking' (scmp.com) · · Score: 0

    in China where everyone looks alike?

  13. I know a contractor who could straighten out the lean in that tower in no time, flat!

  14. Page load speed stays constant on Ajit Pai Wants To Raise Rural Broadband Speeds From 10Mbps To 25Mbps (arstechnica.com) · · Score: 1

    Is it me, or is it with each boost in speed, pages load just as slowly, going all the way back to the Days of Yore when 56K modems reigned?

    Just like each processor gen barely keeps up with Windows Bloat, each increment in connection speed barely keeps up with rendering annoying video ads with the sound turned way up?

  15. The New Kid smell on Ford Patents a Way To Remove 'New Car Smell' (freep.com) · · Score: 1

    I purchased a Toyota from a family member, purchased it during his family-formation years.

    16 years later, one is entering college and the other just graduated. When you get into this car and before the A/C kicks in, you still get a whiff of the unmistakable New Kid small.

  16. You could also buy a Tesla on Ford Patents a Way To Remove 'New Car Smell' (freep.com) · · Score: 1

    https://www.dailymail.co.uk/ne...

    There are photos of phalanxes of unsold Tesla automobiles parked outside.

    The most likely explanation is that they were being stockpiled to maximize the number of U.S. customers who could benefit from the expiring "FIT" credit of $7500. By stockpiling the cars, Tesla was able to not cross the 200,000 unit number in 2018 Quarter 2 ending June 30. Crossing that statutory number in Q3 didn't count against the credit, hence Tesla ran their factory 24/7 so the cars they made plus inventory met the sales rush from the phased-out credit. There is also full credit in Q4 after which the credit is reduced by half by 2019, and so on.

    Many Tesla critics pointed to these cars stored at airport or industrial park lots as baking in the California sun with attendant degradation. But we now know that proud owners of Tesla cars were spared having to inhale to toxic fumes of the New Car Smell.

  17. 32-bit? on Amazon Releases A No-Cost Distribution of OpenJDK (sdtimes.com) · · Score: 1

    There is still a need for 32-bit Java, especially on Windows as well as OS-X, if you want Java to work through JNI with 32-bit native code apps and modules. I "get" why Linux is all 64-bit because "you have the source to everything" and can recompile it, but there is a lot of stuff in the commercial OSs that looks to be 32-bit for a very long time.

    Java 8 looks to be the last one supporting 32-bit in those places, and that has a January 2019 drop dead or pay up date if you want to keep using Eight.

    So if you need 32-bit, you are talking Open JDK 8, which is free from Amazon until 2023? A mild reprieve.

    I came across Azul Systems (I have nothing to do with them apart from wanting a free 32-bit JDK), a start-up sized company distributing free JDKs and paid-for higher-performance versions, if I understand their Web page.

  18. A James Bond movie on Amazon Releases A No-Cost Distribution of OpenJDK (sdtimes.com) · · Score: 1

    This practically begs for a Bond film with two evil masterminds, one owning an island and the other one getting a skim from every monetary transaction ever made. They could fight each other and also Bond, and it could lead to a three-way standoff like in that Clint Eastwood film.

  19. You are going to need a bigger mask on Air Quality in San Francisco is So Bad that Uber Drivers Are Selling Masks Out of Their Cars (recode.net) · · Score: 1

    N95 face mask, meh.

    You should get one of these half-mask respirators with particulate filters

    https://www.jamestowndistribut...

    I use a half mask with organic vapor cartridges for orchard spraying, and with it on, a person cannot even smell their own flatulence. The N95 is a toy.

  20. Do nanogram quantities require 1 in 10^9 precision on The Future of the Kilo: a Weighty Matter (theguardian.com) · · Score: 1

    OK, I get it, that some drug gets administered in microgram or perhaps even nanogram quantities.

    But does a "kee" of that drug need to be measured to one part in 10^9? You could take that quantity of a drug, "cut" it in two, and keep repeat that process 29 more times to get, say, diluted drug doses containing a nanogram of the drug to 7 percent precision?

    How precise do you need to administer a nanogram of active ingredient? Certainly not to 9 sig figs, so do you really need to measure out a kilogram to some insane accuracy?

  21. Han Solo in carbonite on America Braces For Daylight Saving Time - And Missing Medical Records (usatoday.com) · · Score: 4, Funny

    The "word on the street" is that Epic Systems has a high level of employee turnover, in part because of burnout of the persons involved, in part because the company's approach to firing people being that of the Queen of Hearts from Alice in Wonderland ("Off with his head!").

    I have been told by people who have been out to their Verona, WI campus that there is a wall, where employees reaching their 2-year employment anniversary record their hand prints in plaster. I guess a 2 year anniversary is a big milestone if you work there.

    My question is, are those hand prints on the outside pushing in, or are do they appear from the inside of the wall pushing out?

  22. What I learned on Kids Think the Darndest Things About How Computers Work (acm.org) · · Score: 1

    What I learned is that I should have stood up to my wife and executed on my plan to drive her 24-year-old Chrysler without working A/C up to my dad's place and exchange it for our 21-year-old Camry with powerful A/C so we weren't under pressure to repair the 23-year-old Ford to drive around the in-laws coming into town on a hot, summer holiday weekend. My wife admitted later that my plan could have saved us a bunch of money, either with a do-it-yourself water pump replacement or making a family decision without pressure on whether to junk the car.

    What I learned is that I should have just paid the towing mileage to our house because the mileage charge on a long tow is small compared to even a minor repair charge, and the car could be started and moved into the garage without an operating cooling system. What I learned is that the online Ford Forum suggested that based on the symptoms, I had a water pump problem and that changing a water pump is doable on that car for a home mechanic.

    Your suggestion that the dealer is the highest-cost option is well known, but the non-dealer tow operator has more than 10 people in its operation and is not any cheaper. They didn't appear to know what they were doing whereas the dealer did. We don't have a local car mechanic because I either do the work myself or take the car to a tire shop run by a friend-of-the-family up by Dad's place -- where I was headed.

    As to the "blobs" inside the car, we are talking about a conventional liquid cooling system that has been on cars for decades, the only fancy thing being a relay box to switch the electric fan on, a part that costs about a hundred bucks from the auto parts store, only a repair place, all repair places I know about, will charge three times as much. The same goes for the water pump. As to why the huge markup on replacement parts, it probably has to do with the overhead employing more than 10 people, and much of that overhead is probably healthcare. Even a "lean" high co-pay health plan is pricy. So it is modern medicine that makes fixing cars and every other service so expensive.

    As to junking a car that breaks down after 5 years, a replacement for the Ford runs about 25K these days. Yes, you cannot "touch" anything on a car these days without running up 700 or 800 dollars in charges. If I have such a charge every other year, I am still "ahead" of the straight-line depreciation on a 25K car, even if it is 23 years old. It is just that I got hit with two such charges because the tow-place repair shop didn't know that if both the radiator hose and the cabin heat is cold, the fan is not coming on because the temperature sensor isn't "seeing" anything and the water pump is probably busted. Also, the mileage charge on the tow is not that much, so if you break down within, say, 30 miles of home, just tow the fine thing home rather than expect the tow-operator's shop to fix it.

    As to "kids these days, they can name the computer parts, but they cannot tell you how it operates", heck, there are repair shops with techs who don't know the (mechanical) basics of how a car operates.

  23. Curiousity in automobile technicians on Kids Think the Darndest Things About How Computers Work (acm.org) · · Score: 2

    Where has curiosity gone in automobile repair technicians?

    My car overheated out on the highway and had to be towed in. I OK'd the repair shop of the towing company to work on it.

    They assured me the water pump was fine but the electronically controlled fan was not coming on. They replaced, at considerable cost, a special ECM operating the fan. That didn't fix the car, so they recommended replacing my "plugged radiator" at considerable expense, especially in labor considering the tight "packaging" in a front-drive car.

    I had the car towed a second time to a dealer repair shop. They told me the problem was the water pump. When they replaced it, this revealed that the plastic impeller of the old water pump had fractured.

    I guess I am lacking in curiosity too, because the hose going to the radiator didn't warm up, which could have pointed to a plugged radiator, but the cabin heater was blowing cold, so what is the likelihood of a plugged heater core and a plugged radiator suddenly happening out-on-the-road? Catastrophic failure of the water pump -- single-point failure responsible for both symptoms?

    I learned something, but this cost me a pricey double repair bill on a 23-year-old car to which I have a sentimental attachment.

  24. Engineering ethics vs Attorney ethics on Mozilla Challenges Educators To Integrate Ethics Into STEM (fastcompany.com) · · Score: 2

    Engineering ethics demands that you sacrifice career, family, and livelihood to turn "whistleblower" if management ignores your pleas that their proposed cost-saving measure will threaten public safety and despoil the environment.

    Attorney ethics demands that you refrain from stealing from your clients.

  25. ABC news breathlessly reported this spy ring has conducting a cyber attack on the Dutch lab to cover up the use of a nerve agent against a Russian defector and his daughter in England?

    So is this about the attempted assassination on English soil with a WMD, or is this about some lame concerns about sports cheating? Which is it?