Slashdot Mirror


User: 140Mandak262Jamuna

140Mandak262Jamuna's activity in the archive.

Stories
0
Comments
7,545
First seen
Last seen
Profile
(view on slashdot.org)

Comments · 7,545

  1. Is there a legitimate use for such things on Japanese Police Charge 13-Year-Old Girl For Sharing 'Unclosable Popup' Code Online (zdnet.com) · · Score: 1

    So some language feature is being misused by the some app. But the OS should have some sort of intervention to cut in and terminate the errant application. So why is that not possible?

  2. Rei might have modded up some posts in this thread. So she would not post anything.

  3. Gas Dyamics by Zuckrow on NASA Captures Unprecedented Images of Supersonic Shockwaves (phys.org) · · Score: 3, Insightful
    Remember seeing Schlieren pictures while doing the gas dynamics I course back in college.

    The formula P by Po = ( 1 + (gamma - 1)/gamma * M^2) ^ (( gamma - 1)/gamma) I will never forget. Brain cells spent memorizing that formula are frozen for ever, can never be repurposed to do anything else, even if I have do earthly reason to calculate the total pressure in a supersonic flow ever again! The last Gas Dynamics examn I sat for was 32 years ago!

  4. Re:WTF is 1000 mph charging? on Tesla Launches Supercharger V3 With 1,000mph Charging, Better Efficiency, and More (electrek.co) · · Score: 1

    ahh! hiding my face in shame!!!!

  5. Re:Musk vs Critics. Mistake he makes. on Tesla Shifts the Goalposts For 'Full Self-Driving' Technology (arstechnica.com) · · Score: 1
    So some crazy guy modded a car, and got stranded. Along with the BLM road country, you can have this market for gas cars too.

    You seem to be scrapping the bottom of the barrel to come up with markets that can not be served by Tesla.

  6. Re:Musk vs Critics. Mistake he makes. on Tesla Shifts the Goalposts For 'Full Self-Driving' Technology (arstechnica.com) · · Score: 1

    Half? BLM roads cover half of USA? FedEx and UPS do not deliver in 85% of America by that measure. Let the gas cars own that market. Your logic is product A is not suitable for demographic B. OK Fine. Let A concentrate on selling to !B.

  7. It is legally prohibited by a special law. It specifically prohibits CDC from collecting any data about guns and related death/injury statistics.

  8. Re:Shit happens, things change. on Tesla Shifts the Goalposts For 'Full Self-Driving' Technology (arstechnica.com) · · Score: 1
    Tesla needed that cash desperately to ride over the delays in Model 3 ramp.

    As the cash position improves, it will return the money, may be with interest, and scale back the FSD rhetoric.

  9. Tesla does not have to sell to every one. Renters and street parkers can continue to use the product that suits them the best, that is an ICEV today. OK, that is fine. Home owning population provides a market big enough for Tesla to survive.

    FedEx does not deliver to 80% of the land area in USA. It is a viable business, nonetheless. Piped natural gas is not available to all the homes, but the houses that have them provide a market big enough for the gas companies. So many people have no boatable water body within 25 miles. Is the recreational boat market dead?

  10. Re:Musk vs Critics. Mistake he makes. on Tesla Shifts the Goalposts For 'Full Self-Driving' Technology (arstechnica.com) · · Score: 1

    Volt has an gasoline engine. Volt plugin range is 40 miles. It can not fall short by 80 miles. Unless a full tank of gasoline was not enough. By then we cant blame the battery range estimate. Let us be charitable about the OP. Why blame malice when mere incompetence provides adequate explanation?

  11. Re:Musk vs Critics. Mistake he makes. on Tesla Shifts the Goalposts For 'Full Self-Driving' Technology (arstechnica.com) · · Score: 3, Insightful
    OK fine, you can have the market for people who want to drive in Mojave desert and BLM maintained roads.

    We can even mandate all Teslas should carry a warning sticker, "this car is not suitable for Mojave desert driving and BLM maintained roads". The market of people who would knowingly buy a car that can not survive deserts and back roads is big enough for Tesla to survive and thrive.

  12. Re:Musk vs Critics. Mistake he makes. on Tesla Shifts the Goalposts For 'Full Self-Driving' Technology (arstechnica.com) · · Score: 1

    This won't help you. Tesla promised a fully self-driving car that customers paid money for. It hasn't been delivered, never will be and isn't possible.

    I am not disputing this. All I am saying is, "if the critics had been more accurate and more discriminating, instead of saying 'impossible' to everything, he might have listened to them more".

    He things all his critics are wrong all the time. Definitely not correct. Some of his critics are right some of the time. If you give the critics the same level of scrutiny and same level of strictness you would see that lots of his critics were wrong and unfair at least a few times.

  13. Re:Musk vs Critics. Mistake he makes. on Tesla Shifts the Goalposts For 'Full Self-Driving' Technology (arstechnica.com) · · Score: 2
    Please spend time going through all the criticisms heaped upon him. "Gull wing unbuildable, says Bob Lutz" Bob Lutz is not some random internet cowboy.

    Electric cars are 100 year old, and no gas car maker successfully made a no compromise electric car, BEV that can compete with ICEV in at least a few significant performance parameters like, speed, range, capacity and price. Every industry analyst was saying it is impossible, till 2017. The industry started saying, "we can build them BEV anytime we want, when we do we will wipe the floor with Tesla's ass" only recently.

    BEVs can be made profitably. BEVs achieved price parity[* 1] with F segment cars (roadsters, above 120K $) in 2012, in E segment (80K) in 2015, in F segment (50K +) in 2018. Tesla is claiming price parity in D segment (35 K) in 2019. Giving Elon Time dilation, it will be probably in 2020. It should have price parity with C segment, (25 to 35 K) in 2023 [* 2]. But not sure Tesla is planning to enter this market. Might leave these segments to Korea and China and stay in D and above. Half the profits of the car industry are made in D, E and F segments. So it might not enter A (less than 15K), B (15 to 25 K) or C (25 to 35 K).

    Go rent a Tesla for a week, get used to its handling and performance. Then see if you feel the same about the gas car. I find BMW 3 series under powered and laggy once I got used to the Tesla. 40 mph to 60 mph is 1.5 seconds. In merging traffic, this is incredible. When people see what an electric car can do, the gas car sales will tank faster than BEVs could be made. [* 3]

    [* 1] I am talking about price parity, not cost, not including tax subsidies or savings in running costs.

    [* 2] Citation provided.

    [* 3] The Osbourne Effect.

  14. Musk vs Critics. Mistake he makes. on Tesla Shifts the Goalposts For 'Full Self-Driving' Technology (arstechnica.com) · · Score: 2, Informative
    All the critics have been saying "impossible" to all the things Tesla is attempting. Clearly many things the critics said impossible, turned out to be possible after all. You can see a long list in tesla fan sites, Tesla death watch in 2012, cant make a sports car, cant make S, cant make S in volume, cant sell enough X, cant make gull wing door, cant make profit [*], cant make model 3, cant ramp up model 3, cant sell enough ...

    [*] While the critics and PR were talking about net profits, Musk had internal numbers showing a healthy 20% gross margin in S and X. Once gross margin is positive, getting net margin is simply a matter of scaling up.

    So Musk has come to believe ALL the critics are wrong ALL the time. That is again not true. But from Musk point of view, everything he did starting from writing a shoot them up arcade game as a teenager, to making money in the dot com irrational days were deemed "impossible" by most people. So he has come to distrust everyone.

    But once in a while I see reports of him being very realistic and candid. With Monroe agreeing the bad designs that was costing too much money in making model3 for one. His praise for the little known "pump team" in the cave rescue. There is a lot to like the engineer in Musk, and the dedication to chase the impossible.

    But he would have benefited from a few honest critics who could have earned credibility by saying, "This is possible, That is hard, that one is impossible, this one is a question of money, that one is a question of time, but that one is really really impossible". Hope there are a few in his trusted circle. There must be a few, else Space X would not be this successful.

  15. Re:Meant for the roadster and the truck on Tesla Launches Supercharger V3 With 1,000mph Charging, Better Efficiency, and More (electrek.co) · · Score: 2
    It is possibly true. But with an active map of all super chargers within range, with how many bays are free/occupied shown, I usually dont follow the optimized route Tesla has planned. I prefer relaxed driving, and taking breaks.

    Last long trip I did was an airport pickup at Dulles, Washington, DC from Pittsburgh. I planned to be at Washington supercharger 20 minutes before ETA. By the time she disembarked, finished immigration and collected baggage, I had 50 minutes or so. Had enough to return. But still decided to return via Breezewood, PA. Charged again there before going over the mountains, while having dinner. Because, I know all the energy spent climbing will be recovered while descending. But missus would be disconcerted by the battery meter readings along the way. So plugged in, to avoid anxiety. Tesla software does not make these adjustments.

  16. Re:Catching up on Tesla Launches Supercharger V3 With 1,000mph Charging, Better Efficiency, and More (electrek.co) · · Score: 4, Informative
    While you are obsessively calculating these winter ranges, I avoid the gas station trip every week. Every day I leave home with a "full tank of gas", and never have to squeeze in a fuel break in the middle of running errands, I dont have to watch the fuel gauge to judge whether to fill in on the way home today or while during grocery tomorrow. All that time saved put it in the "time bank".

    When I go on a long distance trips, the second fill up will be on a super charger. Somewhere between 20 to 30 minutes more than a comparable gas stop.

    Till you actually own and drive battery cars you wont "get" this point.

  17. Re:WTF is 1000 mph charging? on Tesla Launches Supercharger V3 With 1,000mph Charging, Better Efficiency, and More (electrek.co) · · Score: 3, Informative
    The Bugatti Veryon can not got 253 miles in one hour. When the car is at max speed the fuel tank capacity for the Bugatti is just 20 minutes. That would be near 160 miles in 20 minutes.

    Further the engines are not rated for max power for 20 continuous minutes. The coolant cant keep up, and the it is likely to flash over and the engine would seize in about 5 minutes.

  18. Meant for the roadster and the truck on Tesla Launches Supercharger V3 With 1,000mph Charging, Better Efficiency, and More (electrek.co) · · Score: 3, Informative
    The charge rate depends on how full the battery is. Starting from zero, it can absorb 1000 miles/hr in V3 or 480 miles/hr in V2. But as the battery gets full, the rate drops. Once it is 50% it drops the rate nearly linearly to 12 kW by the time battery is full.

    Given that for some one going from 0 to 100%, the net savings will not be some eye popping number. But for those who drive in with 30 miles on the battery and fill 200 miles per session might see significant savings, from 35 minutes to 20 minutes, may be.

    But the real winners are the yet to be made pickup truck and the roadster. Their battery capacity is very high and they can soak up power at 1000 miles/hr for 15 minutes or so, picking up 250 miles in 15 minutes.

  19. All doctors should now sue AMA on Sleep Helps To Repair Damaged DNA In Neurons, Scientists Find (theguardian.com) · · Score: 3, Interesting

    It was routine till recently to put the medical residents on a 36 hour shifts. Something not done even on the pre union days of US Railroads that would assign double shifts of 16 hours. Truck drivers cant drive for more than 8 hours without taking a break. Now, after lots of hue and cry, they have reduced it to 24 hour shifts now. It was all approved by AMA and it should bear responsibility for not protecting the residents. Their brain has been permanently damaged by the sleep deprivation.

  20. Re:airline pilot's errors do not have Criminal pro on Arizona Prosecutor Says Uber Not Criminally Liable In Fatal Self-Driving Crash (reuters.com) · · Score: 2
    Not always true.

    A Singapore Airline pilot took off on a runway undergoing maintenance. Bulldozers and cranes were on that runway, 2 or 3 km from the starting point. Plane collided with them. They prosecuted him for being negligent.

    France too had prosecuted some pilots for disobeying the safety rules.

    Surprisingly, in the USA, the land of liability litigation, FAA and NTHSB has somehow managed to give immunity to the pilots, as long as they dont cover up anything. As long as every mistake, every violation of protocol is strictly documented, whether it results in an accident/incident or not, there is immunity from prosecution for those mistakes.

  21. 1) Program, build, set up and and let loose on the roads

    2) Put a minimum wage human on the driver seat to take the fall,.

    ? 3) ...

    4) Profit.

  22. The law enforcement is using a very special net. It will catch all the little fish, while letting the big ones escape.

  23. My 25th anniv is coming up soon. First six years we did not have that kind of disk capacity.

  24. I dont think I have seriously deleted any file since 2000 at work. Log files from unit testing suites, sure, and the scratch folders for temp work, sure. But any file created by me, be it a text file, or a script or bmp file or a partial edit of an email, or a several dozens prior drafts of the presentations, nothing has been deleted. The email archive goes all the way to 1997. Some early emails are in large flat text files, which I am going to reorganize and extract all the meta data and make them clean anytime now...

    I count about 8 Tb spread across several machines as my current disk usage. Wondering if this is high, low or medium in technology sectors. None of it are videos or animations. Not much of bmp files, or binaries. Images are, at best, jpgs.

  25. Good news, but ... on Scientists Report a Second Person Has Been Cured of HIV (reuters.com) · · Score: 1
    Even the common chicken pox virus has learned to hide in lymph glands and re-emerge as shingles. Given the viral load caused by HIV, it is possible it too has learned to lurk in many places.

    But, even if that is true, this is a good great advancement.