Isn't this just a case of "proof by exhaustion"? We divide up the problem into the space of all legal moves given the initial starting point, then show that none of them lead to the desired state.
According to Wikipedia this is how the four colour theorem was proved.
Sure, when doing an e-book you save the costs of the printing and shipping. However, you now need to do additional work to validate the e-book. You need to ensure it looks good on all the different readers out there, pick the best of the available fonts, check the alignment at all the different font sizes, make sure any images carry over nicely, etc.
When doing it properly, there is additional work to prepare the e-book, and somebody has to pay for those costs.
That said, I do think it's insane that they want to charge as much as they do.
Around here if one gas station changes their prices, all the other gas stations in the entire city change within an hour or so. Prices generally go up right before a long weekend, go up instantly if there is any bad news about the oil supply (even though they're selling from the underground tanks they filled at the old price), and drop back down very slowly compared to the speed at which the oil price drops.
If it's spring and the temperatures are +10 during the day and -5 at night it can be tricky to fill the pothole properly, especially if there's still runoff from melting.
There are different kinds of pumps. The most common is the type you describe, but there are in fact implantable insulin pumps which get refilled via syringe, and this is the type described in the article:
"The pumps hold 300 units of insulin, enough for about 45 days, and are refilled by a syringe."
Personally I think that single-threaded asynchronous software gives the highest performance. However, there are cases where you want to do things that don't have async APIs. In these cases you need some way of blocking in a synchronous API while letting the server do other work--and epoll/kqueue isn't always an option. In these cases threading can give slightly higher performance than separate processes.
In most cases though I prefer to use separate processes with explicit message-passing. It's easier to debug than using threads, and there is much less chance for one thing going crazy to cascade through and destroy everything else.
What components? You have two connectors and a length of raw cable. Just about everyone uses the same raw cable stock, and everyone gets the ends attached in China.
In an HDMI cable you need to pass a digital signal. Even the cheapest monoprice cable will work fine for short runs, and if there's a bad connection it's obvious and you chuck it and replace it. The ONLY time the quality makes a difference is in long runs (like 40 feet or more to a projector) that are hard to replace. In that case I'd be tempted to get the Belden stuff from Blue Jeans Cable.
I'm using a Plantronics earpiece for a regular desk phone (the kind that fits over the ear and has a long hollow voice tube). It's getting close to 10 years old, still works fine.
It is expected that individuals in certain jobs (primarily dealing with children) show standards of behaviour different from the norm.
In some cases there is a good reason for it...I think it would be difficult for a 18 year old boy to keep their minds on schoolwork if the students were passing around links to pictures of their 22-year old teacher in clubwear at a rave.
I live in the Canadian prairies. The nearest cities with over half a million people are 700km in one direction, and 900km in the other direction. I've done both multiple times.
I've driven 3200km in three days in a 26-foot moving van. I've driven 1700km in 22hrs including a howling blizzard in the Rocky Mountains.
For commuting electric vehicles can be great. For some trips you need energy density.
1) iPhone has no native way to alert you that you missed a call without physically picking up the phone and checking the notifications. Blackberry (and some android phones) have external LEDs to indicate missed calls/texts/emails/etc.
2) Blackberry phones will go for multiple days on a single charge. iPhone needs charging at least once a day with normal use. My mom is a midwife and may be away from home for 30hrs straight. Her work replaced her blackberry with an iphone and now she needs to have a charger in the car, at home, and at work otherwise the phone will die.
There are actually international standards about quality of service that apply to voice communications but don't apply to data communications, so it's not unreasonable for voice to cost somewhat more.
That said, it would make sense for the telco to come out with their own VoIP service that is priced similarly to Skype. They could then get some control over it while still being able to compete price-wise.
At the very least they should price their data plans such that they cover the costs. If actual voice traffic starts dropping this may mean that they need to increase the data plans to cover a larger share of network infrastructure maintenance.
"I'm gonna be a bit contrarian here, in part because it's an interesting issue to explore. Allow them to collude, I say!"
The problem is that historically there are relatively few players in the telecoms market, because it is a natural monopoly. The barriers to entry are very high, so there isn't a lot of competition.
Around here (Canadian Prairies) there are two cell networks, one run by the phone company and one by the cable company. There are then 6 other companies that lease bandwidth on their towers. Some of these companies are actually subsidiaries or partners of each other so the actual competition is even less.
While it's true that the voice packets and data packets may be travelling over the same network, in a traditional telco situation they have very carefully designed that network to guarantee certain quality-of-service parameters for the voice packets.
There are very strict requirements for latency and drop rate when dealing with voice packets. Those requirements are *not* there when using skype or similar.
Technically the employer paid for the conference, so it would be ethical for any significant swag to go to the employer to distribute as they see fit. (Which might be to the developer who went, or it might be a special award for employee-of-the-month or something...). Now if it was a competition, or a draw, or something like that then it might make sense for the developer to keep it since it wasn't expected as part of the conference registration.
In any case, I'm fairly sure that according to a strict reading of our corporate ethics policy I probably wouldn't be able to keep something like a Nexus or a Chromebook anyways if it came from a company that we do business with. Need to avoid any semblance of impropriety.
If you use reversible logic blocks you can still run non-reversible algorithms...as i understand it you could reverse it on the CPU that ran it forwards, but when you write the result to permanent storage or put it out on the network you throw out the extra information (wasting some energy) and it becomes no longer reversible.
beg to differ
on
GCC Turns 25
·
· Score: 3, Informative
You can have the best algorithm in the world, and a good compiler will *still* be able to make it run faster than a bad one.
Alignment, branch probabilities, inline functions, hoisting stuff out of loops, loop unrolling, removing unused code, etc.--these sorts of things really can make a difference in code that gets called frequently.
That said, it's not exactly clear that the Intel compiler (icc) is unconditionally better than gcc. There are some benchmarks at http://www.linuxforge.net/docs/bm/bench-gcc-icc.php of a linux-2.6.34 kernel compiled with gcc and icc. The results are close enough that it doesn't make sense for most people to use icc.
You can view the National Electric Code for free by going to http://www.nfpa.org/aboutthecodes/AboutTheCodes.asp?DocNum=70# and then going down to"view the document online" and clicking the link, then sign in. If you don't have a username/passwd then you can register for free.
The US has chosen to elect individual to represent them. Presumably those individuals should be more up-to-speed on political matters than the people that elect them, so it doesn't seem totally unreasonable for them to make decisions that the average joe wouldn't because they're not paying attention.
I'm Canadian. Our government was elected with 40% of the popular vote but because of how the voting system works they have a majority in the government and can basically do whatever they want. The way my voting district boundaries are set up there's basically no chance that the candidate I vote for will be elected.
So...am I personally responsible for what my government does or not? Given that I am politically opposed to the current ruling party, how would I have less influence on government policy if it was a dictatorship?
I live in the Canadian prairies. Around here if you have a car accident you need to call the cops if anyone was injured or if the damage is above a certain dollar amount.
Slashdot Mirror
If you're allowed to use more than 2 dimensions, fold the plane over on itself so that points A and B touch. Now the distance is zero.
Isn't this just a case of "proof by exhaustion"? We divide up the problem into the space of all legal moves given the initial starting point, then show that none of them lead to the desired state.
According to Wikipedia this is how the four colour theorem was proved.
Sure, when doing an e-book you save the costs of the printing and shipping. However, you now need to do additional work to validate the e-book. You need to ensure it looks good on all the different readers out there, pick the best of the available fonts, check the alignment at all the different font sizes, make sure any images carry over nicely, etc.
When doing it properly, there is additional work to prepare the e-book, and somebody has to pay for those costs.
That said, I do think it's insane that they want to charge as much as they do.
Around here if one gas station changes their prices, all the other gas stations in the entire city change within an hour or so. Prices generally go up right before a long weekend, go up instantly if there is any bad news about the oil supply (even though they're selling from the underground tanks they filled at the old price), and drop back down very slowly compared to the speed at which the oil price drops.
If it's spring and the temperatures are +10 during the day and -5 at night it can be tricky to fill the pothole properly, especially if there's still runoff from melting.
There are different kinds of pumps. The most common is the type you describe, but there are in fact implantable insulin pumps which get refilled via syringe, and this is the type described in the article:
"The pumps hold 300 units of insulin, enough for about 45 days, and are refilled by a syringe."
Personally I think that single-threaded asynchronous software gives the highest performance. However, there are cases where you want to do things that don't have async APIs. In these cases you need some way of blocking in a synchronous API while letting the server do other work--and epoll/kqueue isn't always an option. In these cases threading can give slightly higher performance than separate processes.
In most cases though I prefer to use separate processes with explicit message-passing. It's easier to debug than using threads, and there is much less chance for one thing going crazy to cascade through and destroy everything else.
and you'll find it does indeed travel in wires.
In fact, it travels at
1/ sqrt(e u)
where
e - is the electrical permittivity of the material
u - is the magnetic permeability of the material
What components? You have two connectors and a length of raw cable. Just about everyone uses the same raw cable stock, and everyone gets the ends attached in China.
In an HDMI cable you need to pass a digital signal. Even the cheapest monoprice cable will work fine for short runs, and if there's a bad connection it's obvious and you chuck it and replace it. The ONLY time the quality makes a difference is in long runs (like 40 feet or more to a projector) that are hard to replace. In that case I'd be tempted to get the Belden stuff from Blue Jeans Cable.
I'm using a Plantronics earpiece for a regular desk phone (the kind that fits over the ear and has a long hollow voice tube). It's getting close to 10 years old, still works fine.
There are already solar towers using massive arrays of mirrors all aimed at the same point. This could presumably use something similar.
It is expected that individuals in certain jobs (primarily dealing with children) show standards of behaviour different from the norm.
In some cases there is a good reason for it...I think it would be difficult for a 18 year old boy to keep their minds on schoolwork if the students were passing around links to pictures of their 22-year old teacher in clubwear at a rave.
I live in the Canadian prairies. The nearest cities with over half a million people are 700km in one direction, and 900km in the other direction. I've done both multiple times.
I've driven 3200km in three days in a 26-foot moving van. I've driven 1700km in 22hrs including a howling blizzard in the Rocky Mountains.
For commuting electric vehicles can be great. For some trips you need energy density.
1) iPhone has no native way to alert you that you missed a call without physically picking up the phone and checking the notifications. Blackberry (and some android phones) have external LEDs to indicate missed calls/texts/emails/etc.
2) Blackberry phones will go for multiple days on a single charge. iPhone needs charging at least once a day with normal use. My mom is a midwife and may be away from home for 30hrs straight. Her work replaced her blackberry with an iphone and now she needs to have a charger in the car, at home, and at work otherwise the phone will die.
There are actually international standards about quality of service that apply to voice communications but don't apply to data communications, so it's not unreasonable for voice to cost somewhat more.
That said, it would make sense for the telco to come out with their own VoIP service that is priced similarly to Skype. They could then get some control over it while still being able to compete price-wise.
At the very least they should price their data plans such that they cover the costs. If actual voice traffic starts dropping this may mean that they need to increase the data plans to cover a larger share of network infrastructure maintenance.
"I'm gonna be a bit contrarian here, in part because it's an interesting issue to explore. Allow them to collude, I say!"
The problem is that historically there are relatively few players in the telecoms market, because it is a natural monopoly. The barriers to entry are very high, so there isn't a lot of competition.
Around here (Canadian Prairies) there are two cell networks, one run by the phone company and one by the cable company. There are then 6 other companies that lease bandwidth on their towers. Some of these companies are actually subsidiaries or partners of each other so the actual competition is even less.
While it's true that the voice packets and data packets may be travelling over the same network, in a traditional telco situation they have very carefully designed that network to guarantee certain quality-of-service parameters for the voice packets.
There are very strict requirements for latency and drop rate when dealing with voice packets. Those requirements are *not* there when using skype or similar.
Technically the employer paid for the conference, so it would be ethical for any significant swag to go to the employer to distribute as they see fit. (Which might be to the developer who went, or it might be a special award for employee-of-the-month or something...). Now if it was a competition, or a draw, or something like that then it might make sense for the developer to keep it since it wasn't expected as part of the conference registration.
In any case, I'm fairly sure that according to a strict reading of our corporate ethics policy I probably wouldn't be able to keep something like a Nexus or a Chromebook anyways if it came from a company that we do business with. Need to avoid any semblance of impropriety.
Holding even a small weight for hours on end gets tiring. A small increase in the weight can make a big difference in comfort over the long term.
If you use reversible logic blocks you can still run non-reversible algorithms...as i understand it you could reverse it on the CPU that ran it forwards, but when you write the result to permanent storage or put it out on the network you throw out the extra information (wasting some energy) and it becomes no longer reversible.
You can have the best algorithm in the world, and a good compiler will *still* be able to make it run faster than a bad one.
Alignment, branch probabilities, inline functions, hoisting stuff out of loops, loop unrolling, removing unused code, etc.--these sorts of things really can make a difference in code that gets called frequently.
That said, it's not exactly clear that the Intel compiler (icc) is unconditionally better than gcc. There are some benchmarks at http://www.linuxforge.net/docs/bm/bench-gcc-icc.php of a linux-2.6.34 kernel compiled with gcc and icc. The results are close enough that it doesn't make sense for most people to use icc.
You can view the National Electric Code for free by going to http://www.nfpa.org/aboutthecodes/AboutTheCodes.asp?DocNum=70# and then going down to"view the document online" and clicking the link, then sign in. If you don't have a username/passwd then you can register for free.
The US has chosen to elect individual to represent them. Presumably those individuals should be more up-to-speed on political matters than the people that elect them, so it doesn't seem totally unreasonable for them to make decisions that the average joe wouldn't because they're not paying attention.
I'm Canadian. Our government was elected with 40% of the popular vote but because of how the voting system works they have a majority in the government and can basically do whatever they want. The way my voting district boundaries are set up there's basically no chance that the candidate I vote for will be elected.
So...am I personally responsible for what my government does or not? Given that I am politically opposed to the current ruling party, how would I have less influence on government policy if it was a dictatorship?
I live in the Canadian prairies. Around here if you have a car accident you need to call the cops if anyone was injured or if the damage is above a certain dollar amount.