Sadly I'm not old enough to have ever used an acoustic modem but I did buy one recently on ebay to complete my collection. I don't have a phone line. My 35 year old computer still works fine and is more fun than any of my windows computers,
A geologist on the surface of Mars would be far more scientifically productive than 100 probes.
This is repeated often, but is there any evidence to support this? And if you could put 100 probes on Mars for the price of a single geologist, what then?
The German P.13a was a proposed coal powered WWII aircraft. It never flew as did many designs, but was deemed feasible.
As conventional fuels were in extremely short supply by late 1944, Lippisch proposed that the P.13a be powered by coal. Initially, it was proposed that a wire-mesh basket holding coal be mounted behind a nose air intake, protruding slightly into the airflow and ignited by a gas burner. Following wind-tunnel testing of the ramjet and the coal basket, modifications were incorporated to provide more efficient combustion..
The coal was to take the form of small granules instead of irregular lumps, to produce a controlled and even burn, and the basket was altered to a mesh drum revolving on a vertical axis at 60 rpm. A jet of flame from tanks of bottled gas would fire into the basket once the P.13a had reached operating speed (above 320 km/h), whether by using a rocket to assist takeoff or by being towed..
The air passing through the ramjet would take the fumes from the burning coal towards the rear where they would mix under high pressure with clean air taken from a separate intake. The resulting mixture of gas would then be directed out through a rear nozzle to provide thrust. A burner and drum were built and tested successfully in Vienna by the design team before the end of the war.
Yup. RT means guaranteed deadlines and determinism (how to get there) the trade off being efficiency and throughput. Turn off interrupts and poll the keyboard at 100hz. A waste of a few cycles every second cycles, but a guarantee that you're not down for a microsecond durint your critical 1ms window when nanoseconds matter. It was much moe important when uPs were 1,000x slower. When doing the control mathematics it reduces the noise and uncertainty injected into the system.
Most embedded systems do not required a hard RTOS. Modern systems are fast enough, that you wouldn't care. Dishwasher, microwave, HVAC, watering system, solar control, home automation, entertainment systems, etc all do fine non realtime. Where that fails is in satellite/rocket guidance, autonomous driving/flying and low level robotic control
I warned them about that. But then I worked for NASA. I even said similar things in the past and was labeled as a troll. I don't care and rarely comment on/. anymore.
I think your ideas on this are too narrow. Instead of procedural planning where every action has an algorithm behind it, think of something more along the line of progression of a CA.
The people in the movie had incomplete knowledge of many things. That was their guess and should not be accepted as the truth. (I actually prefer this explanation)
Do not try to flip a coin, that is impossible. Instead, only try to realize the truth. There is no coin. Then you'll see that it is not the coin that flips, but you.
You can buy/build a cnc mill for under $2k suitable for light use or prototyping. A very nice light production version for around $6k. If you go to grizzly.com, you can buy a whole machine shop for under $20k. Or a cabinet/wood shop for somewhat less than that. The average price for a new car is $33,650 and plenty of people are buying those.
And no, not "almost anyone could afford new advanced manufacturing machines (tractors) back then". My grandfather was a machinist and could not afford to buy his own machines. Today they can be purchased for 3x-4x the cost of a video game machine. If you buy used on craigslist or ebay you can find very good deals, stuff older generation would have no way of buying.
Slashdot Mirror
What happens when they get in a position of authority and results are expected?
Sadly I'm not old enough to have ever used an acoustic modem but I did buy one recently on ebay to complete my collection. I don't have a phone line. My 35 year old computer still works fine and is more fun than any of my windows computers,
The US is the distant third most populous country and 4th largest by land area.
This has always confused me. Most of the work of a scientist is to reduce or eliminate bias.
Sadly the most accurate thing that I'll read all year.
Does that extend to computers?
A geologist on the surface of Mars would be far more scientifically productive than 100 probes.
This is repeated often, but is there any evidence to support this? And if you could put 100 probes on Mars for the price of a single geologist, what then?
As conventional fuels were in extremely short supply by late 1944, Lippisch proposed that the P.13a be powered by coal. Initially, it was proposed that a wire-mesh basket holding coal be mounted behind a nose air intake, protruding slightly into the airflow and ignited by a gas burner. Following wind-tunnel testing of the ramjet and the coal basket, modifications were incorporated to provide more efficient combustion..
The coal was to take the form of small granules instead of irregular lumps, to produce a controlled and even burn, and the basket was altered to a mesh drum revolving on a vertical axis at 60 rpm. A jet of flame from tanks of bottled gas would fire into the basket once the P.13a had reached operating speed (above 320 km/h), whether by using a rocket to assist takeoff or by being towed..
The air passing through the ramjet would take the fumes from the burning coal towards the rear where they would mix under high pressure with clean air taken from a separate intake. The resulting mixture of gas would then be directed out through a rear nozzle to provide thrust. A burner and drum were built and tested successfully in Vienna by the design team before the end of the war.
Yup. RT means guaranteed deadlines and determinism (how to get there) the trade off being efficiency and throughput. Turn off interrupts and poll the keyboard at 100hz. A waste of a few cycles every second cycles, but a guarantee that you're not down for a microsecond durint your critical 1ms window when nanoseconds matter. It was much moe important when uPs were 1,000x slower. When doing the control mathematics it reduces the noise and uncertainty injected into the system.
Machines don't need land. In fact land would be a liability.
What are the odds of developing ftl travel before developing food replicator and holodeck technology?
4) Most people on the planet are content to live like sheep
It's a validated strategy that has worked for billions of generations
Most embedded systems do not required a hard RTOS. Modern systems are fast enough, that you wouldn't care. Dishwasher, microwave, HVAC, watering system, solar control, home automation, entertainment systems, etc all do fine non realtime. Where that fails is in satellite/rocket guidance, autonomous driving/flying and low level robotic control
http://trainoftheweek.blogspot...
http://www.wolframalpha.com/in...
What do you mean by 'efficient'? Do you understand the meaning?
I have solar panels that are not roof mounted. Saved a ton of headaches.
What's the problem?
if China or Russia had been in charge?
Absolutely I do. China and/or Russia would have no problem with people criticizing the U.S. government or its leaders on the internet.
Car AI's think in the same way that a web servers thinks about sending out a page to a requesting computer.
I warned them about that. But then I worked for NASA. I even said similar things in the past and was labeled as a troll. I don't care and rarely comment on /. anymore.
I think your ideas on this are too narrow. Instead of procedural planning where every action has an algorithm behind it, think of something more along the line of progression of a CA.
The Matrix (movie) had it wrong
The people in the movie had incomplete knowledge of many things. That was their guess and should not be accepted as the truth. (I actually prefer this explanation)
Do not try to flip a coin, that is impossible. Instead, only try to realize the truth. There is no coin. Then you'll see that it is not the coin that flips, but you.
And no, not "almost anyone could afford new advanced manufacturing machines (tractors) back then". My grandfather was a machinist and could not afford to buy his own machines. Today they can be purchased for 3x-4x the cost of a video game machine. If you buy used on craigslist or ebay you can find very good deals, stuff older generation would have no way of buying.