I dare you to try to identify another culture in the history of humanity that actually openly celebrates the murder of innocent civilians like way too many Muslims did on 9/11.
More specifically: some muslims openly celebrated the murder of innocent civilians and were caught on camera. Some extremist christians do similar things. Some extremist jews do similar things. Some Russians do similar things. Muslims don't have a monopoly on mediaval behaviour.
I've often wanted something that could produce an image from EM emissions, in the same way that our eyes create an image from light.
One way to do so is to capture the electromagnetic field in an matrix in an area (say 2x2m^2), called an aperture, and converting these captured signals to visualise the sources of the signals, more or less like a scanning beamformer. In practice it would be costly to capture hundreds of signals at once. Assuming the sources are stationary, you can also scan the aperture horizontally and vertically.
The display update rate is awful, useless for video and marginal for scrolling. Also it consumes the SPI port which is usually why one gets a raspberry pi in the first place.
All of that may be true, but doesn't change anything to my original statement that the Foundation's was not the first and not the most customised display board. There are other uses for a rpi than the SPI interface, and for many of those -controlling stuff, playing music, whatever!- no high refresh rate is needed, and a compact display is very useful.
maybe you can provide a list of other touchscreen vendors that are using the DSI interface?
Maybe you should take a look at the link I provided already? Most of these displays don't use the HDMI interface. Instead they use the rpi's GPIOs (using spi or something ) to interface with the display. More importantly, they are mechanically customized to fit on the rpi and on the rpi only.
I would say that is rather customized for the rpi.
Good that the Foundation has now released their own screen, but touchscreens for the rpi have been available for a long time, most of them looking more customized for the rpi than this one..
On top of this, Google was fast!
It is hard to imagine now, but in those days "surfing" included a good deal of waiting, because of slower connections and probably slower servers. I remember Altavista being significantly faster than e.g. Yahoo search, and Google being faster than Altavista, most likely because the two academics that started it had a more sober web site.
Print things, on photosensitive paper for two reasons:
1) photosensitive paper, i.e. the same paper that was used to print 1980's analog photos, has proven to be very durable. Don't use inkjets etc, which may fade over time (or they may not -I prefer to not take the risk).
2) a HD full of photos is good for indexing and searching, but I rarely browse these picture. The ones I have printed in a small album lying around are browsed regularly, either by meself or visitors.
There are ways of rotating and polarizing the waves to get thousands of times more information out of every frequency range. Shannon's Law only applies to each specific modulation
There are two polarisations, horizontal and vertical, or RHCP (right hand circularly polarized) and LHCP (left hand...), that are orthogonal, i.e. they do not interfere with each other. So there are no "ways of rotating and polarizing the waves to get thousands of times more information". You may be confusing with MIMO (multiple-input, multiple-output), in which transmitters and receivers have multiple -say N- antennas. The signals from these antennas interfere, but this interference can be untangled, leading to an equivalent of N orthogonal channels. This untangling is similar to the orthogonalisation of a matrix using an eigenvalue decomposition. A MIMO setup with "thousands" of antennas would come close to your claim. Note, however, that your neighbour would also be using tousands of antennas... the interference would be unimaginable.
The clear advantage of wireless over fibre is the low cost of installation and the flexibility. As far as throughtput is concerned, fibre wins, hands down.
...it will be fondly remembered by those of us who were using Linux back in the olden days
There is no need (yet) to be nostalgic about LILO: I (ex slackware, now gentoo) am still using LILO, and probably many others are using it too. If it ain't broken, why replace it?
That is a very interesting proposal. If the amount or errors can give any additional information, and this could be used to locate seismic activity, why not exploit this indeed. Looking at the cable map, I have the impression most of them are roughly in the same region, so I have my doubts about the accuracy, but then again, I am no expert. It may tell more than nothing, as you remarked. Obviously, this is very different from the suggestions of the article, to install active sensors.
If you can influence the error rate of a disk drive by yelling at it (https://www.youtube.com/watch?v=tDacjrSCeq4), then can't you measure earthquakes with a long optical fiber
No, because you don't know where in the cable the event occurs. One possibility would be to dedicate a fiber to these measurements, using OTDR (optical time domain reflectometry) to detect an event. But this would only work on cables without repeaters. Given that these microphonic effects are most likely increadibly weak, and the attenuation incredibly high it probably wouldn't work.
Long story short: these cables were meant for no other purpose than transmitting data -a task daunting enough in itself- and their only "interest" is that they are more or less situated around the area where someone would like to have something else installed.
In terms of rote economics, implementing these sensors into the cable system would be “peanuts” compared to what telecom consortiums are already paying to lay cables across oceans. According to the October ITU report, adding these sensors would add an additional 5-10 percent to the cost of laying a new cable, which generally cost hundreds of millions of dollars.
5-10 percent of hundreds of millions of dollars is not peanuts to me. While this may be an interesting idea, I can imagine that telecom operators are not enthusiastic to implement something this costly, which adds complexity to their installation with limited benefit for themselves.
Remember, poop transplants can make people fatter or skinnier. Once you realize that, it's all a bunch of shit.
I am beginning to understand the etymology of your username.
(obvious) Jokes aside, this is a very important remark. We carry a lot of bacteria around. More specifically, our own body cells are outnumbered by a factor of 10 by bacteria. It is clear that these have a tremendous impact on out metabolism, resistance against disease, body odor etc. I am not an expert, but can imagine that in Dawkins' "extended fenotype" style, gut bacteria may not only be influenced by one's diet (vegetarian/carnivorous/fatty/sugar/...), but may in turn influence our own appetite using hormones or whatever. At that point it becomes a positive feedback system. (again, this is just wild speculation from a non-expert)
It is obvious that a company's success also depends on the efforts of many anonymous workers and governments. However, that doesn't alter the fact that visionary leaders are needed to inspire them. I can imagine that, statistically, all large companies have, on the average, an equally competent workforce. These statistics don't apply to the small group of top management, let alone the CEO. These are the people that set out the company course. Therefore, I refuse to believe e.g. Apple's success is purely coincidental. Same holds for Virgin, Tesla etc.
Whether the personal adoration and cult status is desirable, is another matter altogether, but the importance of a CEO goes without saying.
What he actually says is that he cut down his power consumption so drastically that he is self-reliant with a small solar panel and some batteries. Using only low voltage devices and consuming a small power, indeed there is no need to convert to AC.
However, his biggest achievement is being self-reliant (insofar this is true...) and has nothing to do with AC/DC conversion. AC is being used, mainly because it is easy (and highly efficient!) to change its voltage using transformers. There are some other advantages related to shutting down arcs, and disadvantages related to skin effect, but using transformers is the main one.
For any realistic electrical power consumption the currents at low voltage would be so ridiculously high that very thick conductors would be needed to limit the losses (and fire risk), self-reliant or not. The reasonable thing in that case would be to use an invertor to go to 120/230V AC. The losses would easily be offset by the lower demands on the cabling. It is no coincidence that the power grid and, to a lesser extent, homes operate at high voltage.
30 years ago, the game Larry, about a guy's romantic endeavours, used a list of questions only adults were supposed to be able to answer. The result of the test determined the X-ratedness of the game. Something like that might work here too. It would not be perfect, though, and horny adults may not be in the mood for answering questions like "what president succeeded Nixon?" etc.
Maths is perfectly capable to describe nature. Insofar as we understand nature (physics), our description uses maths. The problem is in crappy programming. No more, no less.
I know some people won't quite get my point, or they'll say, "But metric is so much easier once you know it!" Really though, metric is only much easier when you're doing math. On a day to day level, most of us don't need to do enough math for it to matter.
Read: Those other people are wrong and I am right. Because.
The usefulness of a scale that is "roughly the range of temperatures that is habitable for people" seems to me much less than the usefullness of a scale that indicates the freezing and boiling point of water. People using the Celsius scale also realise that a -15 or a +40 climate is not very pleasant, but the exact number: who cares? At zero degrees Celsius, however, water turns into ice: that is significant for plants, freezing of water tubes etc. In my opinion that is much more useful than quickly being able to tell whether a country is habitable for people (by a vague standard).
While my statement may also hold for those wealthy leaders of 1800 (thanks for that piece of info, btw), I was referring to today. The people from 1800 are no longer alive and can no longer ponder on this. Judging from your comment, I don't expect you to do so either, and maybe it was poorly formulated. "flaming error" did a better job, and I regret he is not modded higher.
The point I wanted to make, is that one of the reasons why the western world is doing relatively well nowadays, is because we stole from other countries (colonies) in the past and continue to do so today. Let the Chinese pollute their country and buy stuff cheaply. Buy cheap resources from Africa and South America. And feel good about ourselves because injustice is not literally carried out by our own hands. That these things happen is sad. Explicitly saying one "no longer feels guilty" (which, as mentioned, probably never happened before either) is ignorant and imho unfair.
Slashdot Mirror
"She believes that they reinforce traditional stereotypes of women"
Sounds more like "women will lose the powerful tool of sex deprivation to control men".
Not that anyone here will suffer from that a lot.
I dare you to try to identify another culture in the history of humanity that actually openly celebrates the murder of innocent civilians like way too many Muslims did on 9/11.
More specifically: some muslims openly celebrated the murder of innocent civilians and were caught on camera. Some extremist christians do similar things. Some extremist jews do similar things. Some Russians do similar things. Muslims don't have a monopoly on mediaval behaviour.
I've often wanted something that could produce an image from EM emissions, in the same way that our eyes create an image from light. One way to do so is to capture the electromagnetic field in an matrix in an area (say 2x2m^2), called an aperture, and converting these captured signals to visualise the sources of the signals, more or less like a scanning beamformer. In practice it would be costly to capture hundreds of signals at once. Assuming the sources are stationary, you can also scan the aperture horizontally and vertically.
The display update rate is awful, useless for video and marginal for scrolling. Also it consumes the SPI port which is usually why one gets a raspberry pi in the first place.
All of that may be true, but doesn't change anything to my original statement that the Foundation's was not the first and not the most customised display board. There are other uses for a rpi than the SPI interface, and for many of those -controlling stuff, playing music, whatever!- no high refresh rate is needed, and a compact display is very useful.
maybe you can provide a list of other touchscreen vendors that are using the DSI interface?
Maybe you should take a look at the link I provided already? Most of these displays don't use the HDMI interface. Instead they use the rpi's GPIOs (using spi or something ) to interface with the display. More importantly, they are mechanically customized to fit on the rpi and on the rpi only.
I would say that is rather customized for the rpi.
Good that the Foundation has now released their own screen, but touchscreens for the rpi have been available for a long time, most of them looking more customized for the rpi than this one..
On top of this, Google was fast!
It is hard to imagine now, but in those days "surfing" included a good deal of waiting, because of slower connections and probably slower servers. I remember Altavista being significantly faster than e.g. Yahoo search, and Google being faster than Altavista, most likely because the two academics that started it had a more sober web site.
1) photosensitive paper, i.e. the same paper that was used to print 1980's analog photos, has proven to be very durable. Don't use inkjets etc, which may fade over time (or they may not -I prefer to not take the risk).
2) a HD full of photos is good for indexing and searching, but I rarely browse these picture. The ones I have printed in a small album lying around are browsed regularly, either by meself or visitors.
For example, did you know that aspirin is found naturally in willow bark?
This is not such secret knowledge. The chemical name of aspirin, Acetylsalicylic acid even derives from salix alba, the willow.
There are ways of rotating and polarizing the waves to get thousands of times more information out of every frequency range. Shannon's Law only applies to each specific modulation
There are two polarisations, horizontal and vertical, or RHCP (right hand circularly polarized) and LHCP (left hand...), that are orthogonal, i.e. they do not interfere with each other. So there are no "ways of rotating and polarizing the waves to get thousands of times more information". You may be confusing with MIMO (multiple-input, multiple-output), in which transmitters and receivers have multiple -say N- antennas. The signals from these antennas interfere, but this interference can be untangled, leading to an equivalent of N orthogonal channels. This untangling is similar to the orthogonalisation of a matrix using an eigenvalue decomposition. A MIMO setup with "thousands" of antennas would come close to your claim. Note, however, that your neighbour would also be using tousands of antennas... the interference would be unimaginable.
The clear advantage of wireless over fibre is the low cost of installation and the flexibility. As far as throughtput is concerned, fibre wins, hands down.
...it will be fondly remembered by those of us who were using Linux back in the olden days
There is no need (yet) to be nostalgic about LILO: I (ex slackware, now gentoo) am still using LILO, and probably many others are using it too. If it ain't broken, why replace it?
That is a very interesting proposal. If the amount or errors can give any additional information, and this could be used to locate seismic activity, why not exploit this indeed. Looking at the cable map, I have the impression most of them are roughly in the same region, so I have my doubts about the accuracy, but then again, I am no expert. It may tell more than nothing, as you remarked. Obviously, this is very different from the suggestions of the article, to install active sensors.
If you can influence the error rate of a disk drive by yelling at it (https://www.youtube.com/watch?v=tDacjrSCeq4), then can't you measure earthquakes with a long optical fiber
No, because you don't know where in the cable the event occurs. One possibility would be to dedicate a fiber to these measurements, using OTDR (optical time domain reflectometry) to detect an event. But this would only work on cables without repeaters. Given that these microphonic effects are most likely increadibly weak, and the attenuation incredibly high it probably wouldn't work.
Long story short: these cables were meant for no other purpose than transmitting data -a task daunting enough in itself- and their only "interest" is that they are more or less situated around the area where someone would like to have something else installed.
In terms of rote economics, implementing these sensors into the cable system would be “peanuts” compared to what telecom consortiums are already paying to lay cables across oceans. According to the October ITU report, adding these sensors would add an additional 5-10 percent to the cost of laying a new cable, which generally cost hundreds of millions of dollars.
5-10 percent of hundreds of millions of dollars is not peanuts to me. While this may be an interesting idea, I can imagine that telecom operators are not enthusiastic to implement something this costly, which adds complexity to their installation with limited benefit for themselves.
Remember, poop transplants can make people fatter or skinnier. Once you realize that, it's all a bunch of shit.
I am beginning to understand the etymology of your username.
(obvious) Jokes aside, this is a very important remark. We carry a lot of bacteria around. More specifically, our own body cells are outnumbered by a factor of 10 by bacteria. It is clear that these have a tremendous impact on out metabolism, resistance against disease, body odor etc. I am not an expert, but can imagine that in Dawkins' "extended fenotype" style, gut bacteria may not only be influenced by one's diet (vegetarian/carnivorous/fatty/sugar/...), but may in turn influence our own appetite using hormones or whatever. At that point it becomes a positive feedback system. (again, this is just wild speculation from a non-expert)
It is obvious that a company's success also depends on the efforts of many anonymous workers and governments. However, that doesn't alter the fact that visionary leaders are needed to inspire them. I can imagine that, statistically, all large companies have, on the average, an equally competent workforce. These statistics don't apply to the small group of top management, let alone the CEO. These are the people that set out the company course. Therefore, I refuse to believe e.g. Apple's success is purely coincidental. Same holds for Virgin, Tesla etc. Whether the personal adoration and cult status is desirable, is another matter altogether, but the importance of a CEO goes without saying.
What he actually says is that he cut down his power consumption so drastically that he is self-reliant with a small solar panel and some batteries. Using only low voltage devices and consuming a small power, indeed there is no need to convert to AC.
However, his biggest achievement is being self-reliant (insofar this is true...) and has nothing to do with AC/DC conversion. AC is being used, mainly because it is easy (and highly efficient!) to change its voltage using transformers. There are some other advantages related to shutting down arcs, and disadvantages related to skin effect, but using transformers is the main one.
For any realistic electrical power consumption the currents at low voltage would be so ridiculously high that very thick conductors would be needed to limit the losses (and fire risk), self-reliant or not. The reasonable thing in that case would be to use an invertor to go to 120/230V AC. The losses would easily be offset by the lower demands on the cabling. It is no coincidence that the power grid and, to a lesser extent, homes operate at high voltage.
30 years ago, the game Larry, about a guy's romantic endeavours, used a list of questions only adults were supposed to be able to answer. The result of the test determined the X-ratedness of the game. Something like that might work here too. It would not be perfect, though, and horny adults may not be in the mood for answering questions like "what president succeeded Nixon?" etc.
That 127.0.0.1 site is nothing but trouble. That's why I redirect it in my HOSTS file to localhost.
Hehe, depends on what you want. I have checked for myself and 127.0.0.1 is full of first class porn.
Oh wait...
if you don't have enough data and/or the software model isn't good enough then the hardware won't make much difference
Agreed. This is why they are also assing hardware to record more data. More data = bigger computer = better predictions makes sense to me.
Again, math fails to describe nature very well.
Maths is perfectly capable to describe nature. Insofar as we understand nature (physics), our description uses maths. The problem is in crappy programming. No more, no less.
I know some people won't quite get my point, or they'll say, "But metric is so much easier once you know it!" Really though, metric is only much easier when you're doing math. On a day to day level, most of us don't need to do enough math for it to matter.
Read: Those other people are wrong and I am right. Because.
The usefulness of a scale that is "roughly the range of temperatures that is habitable for people" seems to me much less than the usefullness of a scale that indicates the freezing and boiling point of water. People using the Celsius scale also realise that a -15 or a +40 climate is not very pleasant, but the exact number: who cares? At zero degrees Celsius, however, water turns into ice: that is significant for plants, freezing of water tubes etc. In my opinion that is much more useful than quickly being able to tell whether a country is habitable for people (by a vague standard).
There are plenty of reasons (beyond merely operating the vehicle) to need windows
Most of all, the passenger experience would be silimar to a submarine's, except with lots of more stuff to bump in to.
While my statement may also hold for those wealthy leaders of 1800 (thanks for that piece of info, btw), I was referring to today. The people from 1800 are no longer alive and can no longer ponder on this. Judging from your comment, I don't expect you to do so either, and maybe it was poorly formulated. "flaming error" did a better job, and I regret he is not modded higher.
The point I wanted to make, is that one of the reasons why the western world is doing relatively well nowadays, is because we stole from other countries (colonies) in the past and continue to do so today. Let the Chinese pollute their country and buy stuff cheaply. Buy cheap resources from Africa and South America. And feel good about ourselves because injustice is not literally carried out by our own hands. That these things happen is sad. Explicitly saying one "no longer feels guilty" (which, as mentioned, probably never happened before either) is ignorant and imho unfair.