opaque:
1. Impervious to the rays of light; not transparent; as, an opaque substance. Translucent:
1. Transmitting light but causing sufficient diffusion to prevent perception of distinct images.
If an object is opaque there is no "light passing through such surfaces" that can be deciphered. It is call opacity but opaque means 0 light pass through.
So that the ones that care, can protect themselves and the ones that don't haven't to be bothered by it.
The issue is that the infected users that "haven't to be bothered by it" are bothering and infecting other users on the net. As another user stated "hospitals put infected people in quarantine. ISP should be able to do the same with infected computers".
Under your standard of "full pipe" are slow bonets ok? They are still botnets that infect other computers and cause millions of dollars of damage in lost productivity and admin time.
The "What is the next step?" argument, like all other 'slippery slope' arguments, is a farce. If you have an issue with cutting off an infected computer, great, I would like to hear it. On the other hand, cutting off an infected computer has nothing to do with censorship and relating the two is invalid.
If you go by the article the range of the aircraft at 110km/h is 55 kms but at 250km the range is 62.5km. How can an aircraft go faster, with the increasing drag proportional to the square of the speed, go farther? Would it not take more energy to overcome the drag and therefore decrease the range?
Clones generally only duplicate installs and not data. The bug may be caused by a slow corruption of data on the prod server. It may only show up after weeks or months of use. It may only happen when certain data happens at a certain time (interaction with cron jobs). Sure one can clone the data too but when the data is multi-TB that will take time and money. Even at this point one can not clone the data flow into the server. Going into a prod server and adding logging lines should be allowed. (Sorry but the "log everything" solution is not a solution as one could create TB of logs in a single day on a prod server)
Access for debugging purposes:Yes Bug Fixes: No (they need to be vetted first. If it is critical the vetting should have very high priority)
Completely different scenario. In the current situation the cloned card submits information to a valid terminal. That valid terminal then talks to a server to complete the transaction. In the second RFID instance a valid card submits information to an invalid terminal. This terminal then has to talk to a server to complete the transaction. The crux is that the invalid terminal must be validated by the server before it will be able to submit information. Even if they could get a merchant id and password it would be closed down pretty fast.
All it takes is a few page number changes and a few additional questions to throw off the sequence and all assignments will no longer coincide with the book. Being assigned pages 100-200 and every odd question in the assignment section will not work if the editions are even slightly different. If a student can not do the assignments then the book is useless.
The other issue is that when the edition changes one can no longer sell the used book or buy a used book. That $170 book can not be sold for $100 and bought for $120. Do that for 4 years and instead of one student spending $170, 2 students spending $20 and one student spending $120. If editions change every year you have five students spending $170 each.
The profit motive is simple; publishers do not like used book sales as they only get paid on the first sale. In the above example, the publisher would get revenue of $170 with viable used books rather than $850 without used books. As a publisher, would you rather sell a book to every student or to every fifth student?
Excellent scam; fix a few each time so every year there is a different edition and all the classes have to buy a new one. They could fix all the issues but that would mean only two editions rather than ten.
What irks me most about textbooks is the "editions" scam. Every year or two a "new" edition comes out which makes the "old" edition not usable in the current course. The scam is that there is very little difference between the "new" edition and the "old" edition; just enough to change page numbers and a few examples. The worst part is that there is no need for a new calculus book; how much has first year calculus changed in 12 months?
Read http://www.ainc-inac.gc.ca/ai/mr/nr/m-a2007/2-2891-m_rprt-eng.pdf . Yes, cost of living is a big issue but so is rampant unemployment, low levels of education, lack housing and poor health care. Decreasing the transport cost of goods will do little to fix these issues.
My comment was to point out the same thing you are; talking in "certainties and absolutes" is misleading. It appeared to me like the original article was trying to say that decreased transport costs would fix all the issues in Nunavit. It may help some of them but it will not fix all of them.
Airships are slow; there is no way around it. They have huge cross sections and drag is a big factor. If your airspeed is 30knots going into a 30knot headwind your ground speed is 0knots. Even a moderate wind of 10knots will decrease your speed by 33%. Crosswinds are a similar issue. An airship can spend much of its forward speed compensating for winds.
Mass is also an issue. Large airships are docked to towers to keep them on one place for loading and unloading. This docking process is very precise. It is somewhat like porcupines kissing; too fast and the tower gets knocked over and/or the airship damaged, too slow and you never get there. Winds complicate the matter. Many accidents have happened due to strong gusts or wind dieing at inopportune times.
Then there is landing area. Each airship needs a circle at least the radius equal to the length of the airship as it needs to be able to swivel into the wind. You could put the airship inside a hanger but that maneuver it tricky (can not be done in windy conditions) and the hangers are huge/expensive.
Depending on the winds, the airship may note get out of the hanger, get loaded, get launched, reach the destination, get tethered and or get unloaded. This makes flights very unreliable in even moderate weather.
I just love how the article says that airships will save lives in Nunavut. I am sure that sending 200 tons of stuff that the locals can not afford to buy will really help the situation. Throwing stuff at people is not the solution to social issues.
Teleconferencing is generally a farce. There is no substitute for being in the same room with someone when important issues are being discussed. Much of human communication is in body language that can not be seen over teleconferencing. Sorry but a 4" picture of someone on a screen is not equivalent to watching that same person from ten feet away.There is also a separation effect in that people will say different things when they are in front of a camera than in the same room. Some people lie more when viewed remotely. For example, would your reaction be different a lawyer was two feet in front of you asking questions or if he was a talking head on a screen? Teleconferencing may work one to one but not when we are dealing with a jury, judge, lawyers, defendants, exhibits, etc. There is too much information lost on screens.
Considering that the battery "load" level went up when the motors were using less power than the solar cells were providing and it went down when the motors were used during the night I would surmise that they meant battery charge.
They are not using a generator; They are using solar cells. The cells did very little because the batteries were full or there was no sun out during the last 16 hours.
Check out http://www.solarimpulse.com/nightFlights/charts.php. Notice that it took 6.5 hours to go from 46% charge to 100%charge. By extrapolation it should take about 12 hours to get a full charge though that may not be true as the solar cell efficiency seems to decrease as the cells cool below 0 degrees. Here are a few other interesting points from the graph.
1. They need a more accurate speed and altitude sensor. There are quite a few spikes in the charts. Some of them have "disappeared". They were probably fixed in the data by averaging. 2. They started with the battery 69% charged. 3. The low point in battery level was 46% 4. It took 7.5 hours to get to full charge. 5. When air temp decreased below 0 the efficiency of the solar cells also decreased dramatically. 6. For a 2.5 hour period when the engine power was at 4% with 0% solar charging the battery charge did not decrease; strange. 7. When the battery was used, it drained at about 10% per hour. 8. The airspeed was about 23kmph most of the time. That is probably the minimum sink speed for the aircraft.
1. They need a more accurate speed and altitude sensor. There are quite a few spikes in the charts. Some of them have "disappeared". They were probably fixed in the data by averaging. 2. They started with the battery 69% charged. 3. The low point in battery level was 46% 4. It took 7.5 hours to get to full charge. 5. When air temp decreased below 0 the efficiency of the solar cells also decreased dramatically. 6. For a 2.5 hour period when the engine power was at 4% with 0% solar charging the battery charge did not decrease; strange. 7. When the battery was used, it drained at about 10% per hour. 8. The airspeed was about 23kmph most of the time.
A composite ultralight aircraft with a wingspan similar to a jumbo jet covered in expensive solar cells does not sound cheap to me. Remember that this aircraft requires a large field to operate from. Oh yeah, considering the speed it could take hours to get to a fire.
BTW, there are already inexpensive drones available that can do that job.
Yeah I am really going to spend 9 of my 14 day vacation cooped up in a zeppelin gondola looking at featureless ocean. There is a reason there are no trans Atlantic cruise ships any more.
Telecommuting has its limits. Try to have a meeting where a number of people are trying to contribute to a discussion. Try to keep track of everyone's mood and demeanour and display a drawing that would normally be on a 4'x6' whiteboard when all you can see is a 19" monitor. Much of a conversation is lost when you can not see everyone who is listening to a discussion.
The reason I am not impressed is that there is no new technology in the aircraft. We already have solars cells, electric motors,ultralight construction and high aspect ratio sailplanes. A competent aeronautical engineer could have done the design and shown that it could easily work. Sure it is cool but it does not advance technology.
Then I guess that the records recorded by Fédération Aéronautique Internationale, The World Air Sports Federation, are incorrect. http://records.fai.org/data?c=6
I have issues with the project web site and the lack of information. One of my main issues is that the site touts the use of new technology but nowhere does it explain exactly what "new" technology it uses. What is it's cruising speed? If it is over 50Kmph I would be surprised.
Another important issue is that it never states is the batteries were full or empty at takeoff and how much of that battery power was used to get the plane to altitude. What if the energy used was only 20% of capacity and the main method of altitude gain was thermals and mountain wave? Recharging that 20% should not be an issue. What then happens if the plane requires 80% of the battery capacity to stay up over night? They would last one night but run out half way through the second night.
I always love obvious spin. When asked when the non stop around the world flight will happen the site says "60 years between the first world tour with stopovers and the first world tour without stopovers in a traditional motor airplane". On the other hand, when asked if solar airplanes will replace conventional airplanes they state "when the great Wright brothers got their first plane to fly a distance of 200 meters in 1903, could they have imagined that 66 years later, two men would walk on the moon?" The spin is that from the first flight to the moon landing there has always been increases in speed, capacity and duration aloft. This technology turn back the clock to a low speed single seater aircraft and assumes we can still advance as far.
An economically viable passenger plane would be required to carry passengers, be pressurized and go much faster; I am sure no one would want to take 100 hours to go from London to Newyork. This may require an energy output a hundred times that of the Solar Impulse. The current plane is already has a wing span of 63m. Even with a increase of solar panel efficiency to 80% that would require an increase in wing area by 25 times. That is one huge plane to carry a few people.
Today, gliders with no electric motors can stay aloft for extended periods of time. The gliding community has stopped tracking duration aloft records due to the dangers of exhaustion. Here are some other current glider records; altitude 12 637 m; distance 1078.2 km; speed over an out-and-return course of 1 000 km 133.89 km/h. What has been created is in effect a huge glider with a electric motor backup.
Regenerative breaking is only 31% efficient. That means that 69% of the energy used to get the vehicle to speed is lost no matter what the speed.
Even at low speeds there is some wind resistance which uses energy. Wind resistance is not the only waster of power in a vehicle; there is rolling resistance, drive train friction, lights, radio, heaters, etc.
1. 1 block is close by any standard. (I checked the map)
2. Association alone was not the issue; it was the combination of the 3 factors. I call this the brick wall tactic. When someone points to a brick wall and someone else goes up and brick by brick says this isn't a wall at throws it away and when there are no bricks left says "see there was never a wall there".
3. The material was weapons and fuel that can and have cause serious injury. Being careful is not going overboard.
Slashdot Mirror
opaque:
1. Impervious to the rays of light; not transparent; as, an opaque substance.
Translucent:
1. Transmitting light but causing sufficient diffusion to prevent perception of distinct images.
If an object is opaque there is no "light passing through such surfaces" that can be deciphered. It is call opacity but opaque means 0 light pass through.
So that the ones that care, can protect themselves and the ones that don't haven't to be bothered by it.
The issue is that the infected users that "haven't to be bothered by it" are bothering and infecting other users on the net. As another user stated "hospitals put infected people in quarantine. ISP should be able to do the same with infected computers".
Under your standard of "full pipe" are slow bonets ok? They are still botnets that infect other computers and cause millions of dollars of damage in lost productivity and admin time.
The "What is the next step?" argument, like all other 'slippery slope' arguments, is a farce. If you have an issue with cutting off an infected computer, great, I would like to hear it. On the other hand, cutting off an infected computer has nothing to do with censorship and relating the two is invalid.
If you go by the article the range of the aircraft at 110km/h is 55 kms but at 250km the range is 62.5km. How can an aircraft go faster, with the increasing drag proportional to the square of the speed, go farther? Would it not take more energy to overcome the drag and therefore decrease the range?
Clones generally only duplicate installs and not data. The bug may be caused by a slow corruption of data on the prod server. It may only show up after weeks or months of use. It may only happen when certain data happens at a certain time (interaction with cron jobs). Sure one can clone the data too but when the data is multi-TB that will take time and money. Even at this point one can not clone the data flow into the server. Going into a prod server and adding logging lines should be allowed. (Sorry but the "log everything" solution is not a solution as one could create TB of logs in a single day on a prod server)
Access for debugging purposes:Yes
Bug Fixes: No (they need to be vetted first. If it is critical the vetting should have very high priority)
Completely different scenario. In the current situation the cloned card submits information to a valid terminal. That valid terminal then talks to a server to complete the transaction. In the second RFID instance a valid card submits information to an invalid terminal. This terminal then has to talk to a server to complete the transaction. The crux is that the invalid terminal must be validated by the server before it will be able to submit information. Even if they could get a merchant id and password it would be closed down pretty fast.
All it takes is a few page number changes and a few additional questions to throw off the sequence and all assignments will no longer coincide with the book. Being assigned pages 100-200 and every odd question in the assignment section will not work if the editions are even slightly different. If a student can not do the assignments then the book is useless.
The other issue is that when the edition changes one can no longer sell the used book or buy a used book. That $170 book can not be sold for $100 and bought for $120. Do that for 4 years and instead of one student spending $170, 2 students spending $20 and one student spending $120. If editions change every year you have five students spending $170 each.
The profit motive is simple; publishers do not like used book sales as they only get paid on the first sale. In the above example, the publisher would get revenue of $170 with viable used books rather than $850 without used books. As a publisher, would you rather sell a book to every student or to every fifth student?
Excellent scam; fix a few each time so every year there is a different edition and all the classes have to buy a new one. They could fix all the issues but that would mean only two editions rather than ten.
What irks me most about textbooks is the "editions" scam. Every year or two a "new" edition comes out which makes the "old" edition not usable in the current course. The scam is that there is very little difference between the "new" edition and the "old" edition; just enough to change page numbers and a few examples. The worst part is that there is no need for a new calculus book; how much has first year calculus changed in 12 months?
Read http://www.ainc-inac.gc.ca/ai/mr/nr/m-a2007/2-2891-m_rprt-eng.pdf . Yes, cost of living is a big issue but so is rampant unemployment, low levels of education, lack housing and poor health care. Decreasing the transport cost of goods will do little to fix these issues.
My comment was to point out the same thing you are; talking in "certainties and absolutes" is misleading. It appeared to me like the original article was trying to say that decreased transport costs would fix all the issues in Nunavit. It may help some of them but it will not fix all of them.
Airships are slow; there is no way around it. They have huge cross sections and drag is a big factor. If your airspeed is 30knots going into a 30knot headwind your ground speed is 0knots. Even a moderate wind of 10knots will decrease your speed by 33%. Crosswinds are a similar issue. An airship can spend much of its forward speed compensating for winds.
Mass is also an issue. Large airships are docked to towers to keep them on one place for loading and unloading. This docking process is very precise. It is somewhat like porcupines kissing; too fast and the tower gets knocked over and/or the airship damaged, too slow and you never get there. Winds complicate the matter. Many accidents have happened due to strong gusts or wind dieing at inopportune times.
Then there is landing area. Each airship needs a circle at least the radius equal to the length of the airship as it needs to be able to swivel into the wind. You could put the airship inside a hanger but that maneuver it tricky (can not be done in windy conditions) and the hangers are huge/expensive.
Depending on the winds, the airship may note get out of the hanger, get loaded, get launched, reach the destination, get tethered and or get unloaded. This makes flights very unreliable in even moderate weather.
I just love how the article says that airships will save lives in Nunavut. I am sure that sending 200 tons of stuff that the locals can not afford to buy will really help the situation. Throwing stuff at people is not the solution to social issues.
Teleconferencing is generally a farce. There is no substitute for being in the same room with someone when important issues are being discussed. Much of human communication is in body language that can not be seen over teleconferencing. Sorry but a 4" picture of someone on a screen is not equivalent to watching that same person from ten feet away.There is also a separation effect in that people will say different things when they are in front of a camera than in the same room. Some people lie more when viewed remotely. For example, would your reaction be different a lawyer was two feet in front of you asking questions or if he was a talking head on a screen? Teleconferencing may work one to one but not when we are dealing with a jury, judge, lawyers, defendants, exhibits, etc. There is too much information lost on screens.
Considering that the battery "load" level went up when the motors were using less power than the solar cells were providing and it went down when the motors were used during the night I would surmise that they meant battery charge.
They are not using a generator; They are using solar cells. The cells did very little because the batteries were full or there was no sun out during the last 16 hours.
Check out http://www.solarimpulse.com/nightFlights/charts.php. Notice that it took 6.5 hours to go from 46% charge to 100%charge. By extrapolation it should take about 12 hours to get a full charge though that may not be true as the solar cell efficiency seems to decrease as the cells cool below 0 degrees. Here are a few other interesting points from the graph.
1. They need a more accurate speed and altitude sensor. There are quite a few spikes in the charts. Some of them have "disappeared". They were probably fixed in the data by averaging.
2. They started with the battery 69% charged.
3. The low point in battery level was 46%
4. It took 7.5 hours to get to full charge.
5. When air temp decreased below 0 the efficiency of the solar cells also decreased dramatically.
6. For a 2.5 hour period when the engine power was at 4% with 0% solar charging the battery charge did not decrease; strange.
7. When the battery was used, it drained at about 10% per hour.
8. The airspeed was about 23kmph most of the time. That is probably the minimum sink speed for the aircraft.
Now that the flight is over, lets take a look at a few of the numbers from http://www.solarimpulse.com/nightFlights/charts.php.
1. They need a more accurate speed and altitude sensor. There are quite a few spikes in the charts. Some of them have "disappeared". They were probably fixed in the data by averaging.
2. They started with the battery 69% charged.
3. The low point in battery level was 46%
4. It took 7.5 hours to get to full charge.
5. When air temp decreased below 0 the efficiency of the solar cells also decreased dramatically.
6. For a 2.5 hour period when the engine power was at 4% with 0% solar charging the battery charge did not decrease; strange.
7. When the battery was used, it drained at about 10% per hour.
8. The airspeed was about 23kmph most of the time.
A composite ultralight aircraft with a wingspan similar to a jumbo jet covered in expensive solar cells does not sound cheap to me. Remember that this aircraft requires a large field to operate from. Oh yeah, considering the speed it could take hours to get to a fire.
BTW, there are already inexpensive drones available that can do that job.
Yeah I am really going to spend 9 of my 14 day vacation cooped up in a zeppelin gondola looking at featureless ocean. There is a reason there are no trans Atlantic cruise ships any more.
Telecommuting has its limits. Try to have a meeting where a number of people are trying to contribute to a discussion. Try to keep track of everyone's mood and demeanour and display a drawing that would normally be on a 4'x6' whiteboard when all you can see is a 19" monitor. Much of a conversation is lost when you can not see everyone who is listening to a discussion.
The reason I am not impressed is that there is no new technology in the aircraft. We already have solars cells, electric motors,ultralight construction and high aspect ratio sailplanes. A competent aeronautical engineer could have done the design and shown that it could easily work. Sure it is cool but it does not advance technology.
Oops!! But it further illustrates my point that gliders have already done outstanding feats and the Solar Impulse is not all that impressive.
Then I guess that the records recorded by Fédération Aéronautique Internationale, The World Air Sports Federation, are incorrect. http://records.fai.org/data?c=6
There are two ways to use Comcast digital cable; set top box and CableCard http://customer.comcast.com/Pages/FAQViewer.aspx?seoid=What-is-a-CableCARD
I have issues with the project web site and the lack of information. One of my main issues is that the site touts the use of new technology but nowhere does it explain exactly what "new" technology it uses. What is it's cruising speed? If it is over 50Kmph I would be surprised.
Another important issue is that it never states is the batteries were full or empty at takeoff and how much of that battery power was used to get the plane to altitude. What if the energy used was only 20% of capacity and the main method of altitude gain was thermals and mountain wave? Recharging that 20% should not be an issue. What then happens if the plane requires 80% of the battery capacity to stay up over night? They would last one night but run out half way through the second night.
I always love obvious spin. When asked when the non stop around the world flight will happen the site says "60 years between the first world tour with stopovers and the first world tour without stopovers in a traditional motor airplane". On the other hand, when asked if solar airplanes will replace conventional airplanes they state "when the great Wright brothers got their first plane to fly a distance of 200 meters in 1903, could they have imagined that 66 years later, two men would walk on the moon?" The spin is that from the first flight to the moon landing there has always been increases in speed, capacity and duration aloft. This technology turn back the clock to a low speed single seater aircraft and assumes we can still advance as far.
An economically viable passenger plane would be required to carry passengers, be pressurized and go much faster; I am sure no one would want to take 100 hours to go from London to Newyork. This may require an energy output a hundred times that of the Solar Impulse. The current plane is already has a wing span of 63m. Even with a increase of solar panel efficiency to 80% that would require an increase in wing area by 25 times. That is one huge plane to carry a few people.
Today, gliders with no electric motors can stay aloft for extended periods of time. The gliding community has stopped tracking duration aloft records due to the dangers of exhaustion. Here are some other current glider records; altitude 12 637 m; distance 1078.2 km; speed over an out-and-return course of 1 000 km 133.89 km/h. What has been created is in effect a huge glider with a electric motor backup.
Regenerative breaking is only 31% efficient. That means that 69% of the energy used to get the vehicle to speed is lost no matter what the speed.
Even at low speeds there is some wind resistance which uses energy. Wind resistance is not the only waster of power in a vehicle; there is rolling resistance, drive train friction, lights, radio, heaters, etc.
There is no free ride
Then the prices will rise again as the price of components such as lithium rise due to high demand.
1. 1 block is close by any standard. (I checked the map)
2. Association alone was not the issue; it was the combination of the 3 factors. I call this the brick wall tactic. When someone points to a brick wall and someone else goes up and brick by brick says this isn't a wall at throws it away and when there are no bricks left says "see there was never a wall there".
3. The material was weapons and fuel that can and have cause serious injury. Being careful is not going overboard.
1. The kids are not the ones buying happy meals; the parents are. If the parents are not strong enough to say "No" there is a much bigger problem.
2. Happy meal toys are a good thing. They give the kids something to do while the parent is eating their meal. Kids get bored fast.
3. Today's Happy meal can be quite healthy. http://www.mcdonalds.com/us/en/food/meal_bundles/happy_meals.html. A bit low on vegies but not all that bad.