If you are not sitting within 1.5 picture heights of the screen, you won't see the 4K detail anyway.
This means if you hold your arm outstretched, make a fist but leave your thumb up, your need to be able to fit you palm/thumb twice into the angle subtended by the screen.
Dosing is a big issue. Huge. Not just determining the correct dose but mechanically and reliably administering the correct dose. This is NOT a trivial concern. Both under and overdosing with epinephrine can be a very serious matter.
The truth is that amateur use of an EpiPen has dosing all over the place. The FDA shot down an EpiPen competitor device for just that reason, but in fact the EpiPen itself has these issues. Where the needle ends up is very important, and proper placement, angle, and even how much fat you have can change the delivered dose. A trained doctor with a syringe will do a better job, but of course it is harder to put a doctor in your bag and walk around with it.
Re-entry predictions of uncontrolled satellites are not very certain. We can say for sure what track the re-entry will occur on (generally the orbital track), but where on that track is far less certain.
Even predictions issued 3 hours before re-entry may be affected by an along-track uncertainty of 40,000 km (i.e. one whole orbit), possibly halved during the last hour.
John Stuart Mill was taught ancient Greek by the age of three. By the age of eight, he had read Aesop's Fables, Xenophon's Anabasis, and the whole of Herodotus, and was acquainted with Lucian, Diogenes Laertius, Isocrates and six dialogues of Plato.
My kids are way behind!
I will admit two laments about modern education:
1) Too much homework for young kids (pre-K, K, etc.) Not that homework is a bad thing, but when a kid can't even read, "homework" is really "parent work". 2) Too many public school fundraisers. I thought this was all socialist schooling paid for at the point of a gun by taxes? If they expect me to pay for school, I'll send my kids to private school and move to some place that has lower taxes. I don't remember any of these crazy fundraisers when I was in school...
The worst naming was a company that used rocks for their product names.
Granite, Amethyst, Quartz, Topaz. These were video encoders, transport stream processors, video servers, etc., but I was never able to remember which was which.
Look, WWW is all nice and stuff, but frankly before NCSA Mosaic was released you could not really tell the difference between Gopher and WWW, and while they were interesting to play with, it was just play (unlike USENET News which had real value:). Somehow Viola never had much impact either.
NCSA Mosaic was originally released January 23, 1993. I gasped when I first saw it, because I had been dreaming of a global hypermedia network, and it showed that was possible. That day changed my life from someone who was an electrical engineer to someone who designed early commercial web sites.
Version 1.0 for Windows was released on November 11, 1993, and of course that is when "normal human beings" had any chance of getting on the Web.
The advantage of silicon photonics is to integrate the optical elements (lasers & PIN diodes) into the silicion drivers and amplifiers, theoretically reducing cost.
There are already 100 Gbps CWDM4 QSFP28 (4 wavelengths of 25 Gbps on 2 fibers) and 100 Gbps PSM4 QSFP28 (single 25 Gbps wavelength on 8 parallel fibers) transceivers out there, but they need discrete lasers & PIN diodes in InP or GaAs, not silicon.
My impression is that 50 Gbps wavelengths are coming soon (using 4-level PAM), so two of those will be 100 Gbps. But the holy grail is the one wavelength 100 Gbps, likely some kind of high-order modulation (HOM). AppliedMicro has demonstrated a 100 Gbps single-wavelength PAM4, but no word on distance.
However in the rest of the OECD countries DSL outsells cable by a large margin with very few exceptions.
American Telcos have screwed up, that's not the technology's fault, it's the companies' fault for how they implemented it.
My theory is that in the US, earlier adoption of digital telephony switching allowed earlier consolidation of telephone central offices, thus longer local loops (which didn't matter for telephony).
In other countries, the consolidation of central offices was delayed for some reason, which kept local loops shorter, which is great for DSL.
It isn't a just a density issue either - Australia has lower average local loop lengths than the US as well.
Those talking about how cable is a superior technology to DSL don't know what they're talking about. What makes either technology superior or inferior is the implementation, both technologies are capable of good solid high speeds if implemented right.
There is an inherent problem with twisted pair. If your local DSL loop is over 2.5 km, you will never get over 5 Mbps. The average US local loop is 4+ km.
It is true that if your DSL loop is shorter, say 600m, VDSL2 can get you 100 Mbps, and if it is crazy short like 150m you can get 500 Mbps with G.fast. But we are now talking about fiber-to-the-node like UVerse with a DSL last couple of feet.
The issue is that coax has less loss and greater bandwidth than twisted pair, and in general cable coax loops are shorter because there are already nodes in your neighborhood instead of a DSLAM at the central office.
I keep writing about Presidential candidate Gary Johnson, who is neither Trump nor Clinton, and he is coming close to being at 15% in the polls and should be in the Presidential debates...
I was having some problems in my graduate school class on Digital Signal Processing, so I went to the professor with some questions. He started out by saying, "Yes, many of the American students are finding this class tough..."
The average local loop length in the US is 4.25 km...
DSL has sped up incredibly for short loops, but for long loops there won't be much improvement. Either someone has to build DSLAMs closer to the houses, FTTx, etc.
I agree that there are plenty of people in the US with 50 Mbps+ (I have that myself), but there are still a lot of people on the end of long DSL loops who will never get higher than 5 Mbps.
explain to me again why it's a good idea to provide twice the resolution that the human eye is capable of resolving.
At 1080 lines (HD) resolutions, your eye can resolve the smallest detail at 3 picture heights (assumes 20/20 vision, based on Snellen acuity). 3 picture heights is about the angle subtended by your hand of your outstretched arm if you hold up your thumb.
At 2160p (4K) resolutions, you need to be at 1.5 picture heights (screen height two outstretched hand+thumbs)
At 4320p (8K) resolutions, you need to be at 0.75 picture heights (screen height four outstretched hand+thumbs)
(You can "kinda tell" sub-Snellen resolution such as vernier acuity [if a line is straight, etc], but you can't really "resolve" anything like a letter of the alphabet without Snellen resolution).
4K (4096 x 2160) was originally a digital cinema resolution, but television people were jealous of it. However TV people only felt comfortable doing 4 quadrants of 1080p, thus we got 3840x2160.
Most "4K" TV production today uses 4 coaxial cables carrying 3 Gbps serial digital signals of 1080p. This is also known as "23 wrong ways to plug in your camera".
The hope is that everyone will shortly go to 25/40/100 GbE before 4K becomes a "standard operation" for television.
So in order to get that resolution in an OTA broadcast, do you start using several channels worth of bandwidth, or do you compress the living daylights out of it
You definitely use HEVC/H.265 encoding to get the best compression, but to go over-the-air you need Ultra-multilevel OFDM (4096 constellation points), Dual-polarized MIMO (using horizontal and vertical polarizations simultaneously to transmit twice as much information as single-input single-output), and Large-sized FFT (reduces the ratio of guard intervals that eliminate delay waves by reflection, quadruple sized FFT can drop guard interval from 1/8 to 1/32).
NHK has done tests receiving a 91 Mbps signal over 27 km. Details here.
The news reports are that the 8K signals starting up today are on the BS broadcast satellite system. DVB-S2 can provide 91 Mbps with 8PSK or 16APSK modulations.
China has an endless supply of people that will work for next to nothing. You'd think they would be the last ones to be looking into robots.
Labor force doesn't increase productivity, capital does.
Take 10,000 workers and they still could not make a single microprocessor without the capital equipment to grow silicon crystals, photolithography, wafer handling in clean rooms, etc.
The "coup" was most likely covertly triggered by Erdogan
While I thought this at first, It would have had to have been quite an engineering feat though without the truth getting out. I saw the coup-backing military shooting protesting civilians in Ankara live on Periscope. It looked pretty real to me. Erdogan would have had to convince a lot of military people that the coup was real.
Slashdot Mirror
If you are not sitting within 1.5 picture heights of the screen, you won't see the 4K detail anyway.
This means if you hold your arm outstretched, make a fist but leave your thumb up, your need to be able to fit you palm/thumb twice into the angle subtended by the screen.
Dosing is a big issue. Huge. Not just determining the correct dose but mechanically and reliably administering the correct dose. This is NOT a trivial concern. Both under and overdosing with epinephrine can be a very serious matter.
The truth is that amateur use of an EpiPen has dosing all over the place. The FDA shot down an EpiPen competitor device for just that reason, but in fact the EpiPen itself has these issues. Where the needle ends up is very important, and proper placement, angle, and even how much fat you have can change the delivered dose. A trained doctor with a syringe will do a better job, but of course it is harder to put a doctor in your bag and walk around with it.
Re-entry predictions of uncontrolled satellites are not very certain. We can say for sure what track the re-entry will occur on (generally the orbital track), but where on that track is far less certain.
Even predictions issued 3 hours before re-entry may be affected by an along-track uncertainty of 40,000 km (i.e. one whole orbit), possibly halved during the last hour.
John Stuart Mill was taught ancient Greek by the age of three. By the age of eight, he had read Aesop's Fables, Xenophon's Anabasis, and the whole of Herodotus, and was acquainted with Lucian, Diogenes Laertius, Isocrates and six dialogues of Plato.
My kids are way behind!
I will admit two laments about modern education:
1) Too much homework for young kids (pre-K, K, etc.) Not that homework is a bad thing, but when a kid can't even read, "homework" is really "parent work".
2) Too many public school fundraisers. I thought this was all socialist schooling paid for at the point of a gun by taxes? If they expect me to pay for school, I'll send my kids to private school and move to some place that has lower taxes. I don't remember any of these crazy fundraisers when I was in school...
The worst naming was a company that used rocks for their product names.
Granite, Amethyst, Quartz, Topaz. These were video encoders, transport stream processors, video servers, etc., but I was never able to remember which was which.
Strawberry picking robot. "The robot can harvest strawberries every 8 seconds and works while farmers sleep."
Look, WWW is all nice and stuff, but frankly before NCSA Mosaic was released you could not really tell the difference between Gopher and WWW, and while they were interesting to play with, it was just play (unlike USENET News which had real value :). Somehow Viola never had much impact either.
NCSA Mosaic was originally released January 23, 1993. I gasped when I first saw it, because I had been dreaming of a global hypermedia network, and it showed that was possible. That day changed my life from someone who was an electrical engineer to someone who designed early commercial web sites.
Version 1.0 for Windows was released on November 11, 1993, and of course that is when "normal human beings" had any chance of getting on the Web.
Not only are there a lot of fruits/vegetables that still have to be hand picked
See Robotic Fruit Picking
The advantage of silicon photonics is to integrate the optical elements (lasers & PIN diodes) into the silicion drivers and amplifiers, theoretically reducing cost.
There are already 100 Gbps CWDM4 QSFP28 (4 wavelengths of 25 Gbps on 2 fibers) and 100 Gbps PSM4 QSFP28 (single 25 Gbps wavelength on 8 parallel fibers) transceivers out there, but they need discrete lasers & PIN diodes in InP or GaAs, not silicon.
So we will see how Intel's silicon photonics 100 Gbps CWDM4 QSFP28 and 100 Gbps PSM4 QSFP28 transceivers end up being priced.
My impression is that 50 Gbps wavelengths are coming soon (using 4-level PAM), so two of those will be 100 Gbps. But the holy grail is the one wavelength 100 Gbps, likely some kind of high-order modulation (HOM). AppliedMicro has demonstrated a 100 Gbps single-wavelength PAM4, but no word on distance.
However in the rest of the OECD countries DSL outsells cable by a large margin with very few exceptions.
American Telcos have screwed up, that's not the technology's fault, it's the companies' fault for how they implemented it.
My theory is that in the US, earlier adoption of digital telephony switching allowed earlier consolidation of telephone central offices, thus longer local loops (which didn't matter for telephony).
In other countries, the consolidation of central offices was delayed for some reason, which kept local loops shorter, which is great for DSL.
It isn't a just a density issue either - Australia has lower average local loop lengths than the US as well.
Those talking about how cable is a superior technology to DSL don't know what they're talking about. What makes either technology superior or inferior is the implementation, both technologies are capable of good solid high speeds if implemented right.
There is an inherent problem with twisted pair. If your local DSL loop is over 2.5 km, you will never get over 5 Mbps. The average US local loop is 4+ km.
It is true that if your DSL loop is shorter, say 600m, VDSL2 can get you 100 Mbps, and if it is crazy short like 150m you can get 500 Mbps with G.fast. But we are now talking about fiber-to-the-node like UVerse with a DSL last couple of feet.
The issue is that coax has less loss and greater bandwidth than twisted pair, and in general cable coax loops are shorter because there are already nodes in your neighborhood instead of a DSLAM at the central office.
I keep writing about Presidential candidate Gary Johnson, who is neither Trump nor Clinton, and he is coming close to being at 15% in the polls and should be in the Presidential debates...
The Virgin "Upper Class" section across the Atlantic has a bar you can sit at. Pretty cool.
But flying on these little airlines freak me out because a bad weather delay can really mess you up if there are just a few flights per day.
Japan's is heavily unionised, and they are making the most popular cars in America
Yes but the two most popular cars sold in the US that are manufactured by Japanese-based companies are actually made in the US.
Toyota Camry is assembled for U.S. customers at factories in Georgetown, Ky., or Lafayette, Ind.
Honda Accord comes from Marysville, Ohio.
I was having some problems in my graduate school class on Digital Signal Processing, so I went to the professor with some questions. He started out by saying, "Yes, many of the American students are finding this class tough..."
If you are on DSL and live more than 3.5 km of loop from the DSLAM, you will never get faster than 5 Mbps.
The average local loop length in the US is 4.25 km...
DSL has sped up incredibly for short loops, but for long loops there won't be much improvement. Either someone has to build DSLAMs closer to the houses, FTTx, etc.
The Akamai State of the Internet Q1 2016 has a US average Internet bandwidth of 15 Mbps, which is far more believable.
I agree that there are plenty of people in the US with 50 Mbps+ (I have that myself), but there are still a lot of people on the end of long DSL loops who will never get higher than 5 Mbps.
explain to me again why it's a good idea to provide twice the resolution that the human eye is capable of resolving.
At 1080 lines (HD) resolutions, your eye can resolve the smallest detail at 3 picture heights (assumes 20/20 vision, based on Snellen acuity). 3 picture heights is about the angle subtended by your hand of your outstretched arm if you hold up your thumb.
At 2160p (4K) resolutions, you need to be at 1.5 picture heights (screen height two outstretched hand+thumbs)
At 4320p (8K) resolutions, you need to be at 0.75 picture heights (screen height four outstretched hand+thumbs)
(You can "kinda tell" sub-Snellen resolution such as vernier acuity [if a line is straight, etc], but you can't really "resolve" anything like a letter of the alphabet without Snellen resolution).
4K (4096 x 2160) was originally a digital cinema resolution, but television people were jealous of it. However TV people only felt comfortable doing 4 quadrants of 1080p, thus we got 3840x2160.
Most "4K" TV production today uses 4 coaxial cables carrying 3 Gbps serial digital signals of 1080p. This is also known as "23 wrong ways to plug in your camera".
The hope is that everyone will shortly go to 25/40/100 GbE before 4K becomes a "standard operation" for television.
So in order to get that resolution in an OTA broadcast, do you start using several channels worth of bandwidth, or do you compress the living daylights out of it
You definitely use HEVC/H.265 encoding to get the best compression, but to go over-the-air you need Ultra-multilevel OFDM (4096 constellation points), Dual-polarized MIMO (using horizontal and vertical polarizations simultaneously to transmit twice as much information as single-input single-output), and Large-sized FFT (reduces the ratio of guard intervals that eliminate delay waves by reflection, quadruple sized FFT can drop guard interval from 1/8 to 1/32).
NHK has done tests receiving a 91 Mbps signal over 27 km. Details here.
The news reports are that the 8K signals starting up today are on the BS broadcast satellite system. DVB-S2 can provide 91 Mbps with 8PSK or 16APSK modulations.
Object-oriented is a fad!
So is IPv6!
Germany shows that it is not that bad, they have been heavily into automation for a while
Yes but Germany is part of the harmonised trade system of the EU, and it is just as open to Chinese imports as the United States.
Germany percent of workers involved in manufacturing has been going down of course.
China has an endless supply of people that will work for next to nothing. You'd think they would be the last ones to be looking into robots.
Labor force doesn't increase productivity, capital does.
Take 10,000 workers and they still could not make a single microprocessor without the capital equipment to grow silicon crystals, photolithography, wafer handling in clean rooms, etc.
According to this the price for rural FTTH is:
Cost per household = $3,072 + $13,365 * (adjusted road miles/households) - 0.8867 * households + $25.04 * frost index + $17,700 * wetlands percentage + $1,376 * soils texture + $165.40 * road intersection frequency
The "coup" was most likely covertly triggered by Erdogan
While I thought this at first, It would have had to have been quite an engineering feat though without the truth getting out. I saw the coup-backing military shooting protesting civilians in Ankara live on Periscope. It looked pretty real to me. Erdogan would have had to convince a lot of military people that the coup was real.
The most interesting headline is Military crew sent to nab Erdogan told they were after a terrorist.