Gmail does not implement IMAP standard correctly. I am aware of two currently existing problems (and there were more iirc): ENVELOPE response is occasionally misformed for more complex messages. Gmail sends EXPUNGE unsolicited responses when it is forbidden by the standard. Gmail sends the responses to some queries out of order - this behaviour is formally correct but is not what some IMAP clients expect.
Still, many IMAP clients which use IMAP in a POP fashion and never - or rarely - encounter these problems. Try using a more sophisticated IMAP client which makes an effort to optimize the amount of transferred data and keeps long-lived network connections the way IMAP was designed for - and you will understand what the grandparent had in mind.
As somebody has already mentioned in the comment on PhysicsCentral, a realistic model should take into account the dependence between the probability of causing an accident resulting in a traffic jam and the driving style.
I could read only the abstract. If the parameter q is the only parameter used, it is not entirely surprising that they got the results they got. In such a model, the rule-obeying drivers driving in the same direction stick together. Rule non-obedience makes the fluid more compressible. Shock waves in compressible fluids appears at higher velocities.
It is surely nice their model agrees with the intuition. I would not call such a simplified model realistic, though.
I see you have tried to be funny and in the result you have failed to be informative. Do you imply that there is no point in striving for fuel efficiency because this will increase the overall fuel consumption? If that is the case, I disagree. It is like saying "there is no point in saving money because will spend more". Promoting hybrids and all-electric cars is done best by making the fuel consumption expensive. Also, citing the wikipedia page you linked to:
Jevons Paradox is sometimes used to argue that energy conservation is futile. For example, that more efficient use of oil will lead to increased demand, and will not slow the arrival or the effects of peak oil. This is usually presented as a reason not to increase fuel efficiency (if cars are more efficient, it will simply lead to more driving).
Several points can be raised against this argument. First, in the context of a mature market such as for oil, the rebound effect is usually small, and so increased efficiency usually reduces resource use. (However, fuel use may still increase because of faster economic growth.) Second, even if increased fuel efficiency does not reduce the total amount of fuel used, this ignores other benefits associated with increased fuel efficiency. For example, increased fuel efficiency may mitigate the price increases, shortages and disruptions in the global economy associated with peak oil. Third, fuel use will decline if increased fuel efficiency is met with government intervention (e.g. a green tax, license fees, etc.) that keeps the cost of use the same. By mitigating the economic effects of government intervention designed to promote ecologically sustainable activities, efficiency-improving technological progress may make the government intervention more palatable, and more likely to be implemented.
One statement above is incorrect: the fines in Sweden do not depend on on your income. The poster has confused Sweden with Finland.
iPAQ hw6515 is a step in the right direction
on
The Future of the PDA
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· Score: 3, Interesting
iPAQ hw6515 is a step in the right direction: it is a PDA with an ability to make phone calls. It has PocketPC OS with its advantages and disadvantages. You can make phone calls, surf the web, listen to MP3s, send e-mails, take photos and find out where you are - yes, it has a GPS module, too. The "qwerty" keyboard is quite handy and beats T9 systems without a doubt. The software has few quirks and takes few days to learn. Setting up secure email submission is difficult if not outright impossible but I guess this was never MS priority.
Check out Maxima - while it may be not as complete as mathematica, it can do a lot of symbolic algebra, including derivatives, integration and expression simplification (optimize function is great, it can eg. factor out common subexpressions).
The Weather Channel-sponsored drivers are doing great, I use them since August and now they are basically ready - see http://dri.sf.net/. The only disadvantage with respect to closed source drivers was inability to use some patented techniques (in particular texture compression), since the patent owner (S3?) did not grant (yet) the rights to use them in the driver. Otherwise, there are much more convienent to use than Nvidia drivers I have been forced to use on my other box. And more stable, too.
Linus' opinion about preemptive kernel
on
Torvalds Tells All
·
· Score: 1
I like Linus' standpoint about the preemptive kernel. I agree with him that one should eliminate cause of latencies instead of addressing symptoms only.
I can imagine fighting with symptoms seems a simpler task but latencies result often from a bad design and it is better to fix the design once instead of implementing workarounds.
Saying that Linux NFS&Quota are terribly broken is a slight exaggeration. They have a number of bugs, plenty of things have to be improved - that's true - but they are functional as long as you don't try to export file system to another OS (we have similar problem here with Tru64).
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Gmail does not implement IMAP standard correctly. I am aware of two currently existing problems (and there were more iirc): ENVELOPE response is occasionally misformed for more complex messages. Gmail sends EXPUNGE unsolicited responses when it is forbidden by the standard. Gmail sends the responses to some queries out of order - this behaviour is formally correct but is not what some IMAP clients expect. Still, many IMAP clients which use IMAP in a POP fashion and never - or rarely - encounter these problems. Try using a more sophisticated IMAP client which makes an effort to optimize the amount of transferred data and keeps long-lived network connections the way IMAP was designed for - and you will understand what the grandparent had in mind.
As somebody has already mentioned in the comment on PhysicsCentral, a realistic model should take into account the dependence between the probability of causing an accident resulting in a traffic jam and the driving style. I could read only the abstract. If the parameter q is the only parameter used, it is not entirely surprising that they got the results they got. In such a model, the rule-obeying drivers driving in the same direction stick together. Rule non-obedience makes the fluid more compressible. Shock waves in compressible fluids appears at higher velocities. It is surely nice their model agrees with the intuition. I would not call such a simplified model realistic, though.
I may be preaching to the choir here...
One statement above is incorrect: the fines in Sweden do not depend on on your income. The poster has confused Sweden with Finland.
iPAQ hw6515 is a step in the right direction: it is a PDA with an ability to make phone calls. It has PocketPC OS with its advantages and disadvantages. You can make phone calls, surf the web, listen to MP3s, send e-mails, take photos and find out where you are - yes, it has a GPS module, too. The "qwerty" keyboard is quite handy and beats T9 systems without a doubt. The software has few quirks and takes few days to learn. Setting up secure email submission is difficult if not outright impossible but I guess this was never MS priority.
I am sure PuTTY people will accept your hight-quality patches addressing these deficiencies. Remember, everybody here scratches own itch!
fortran 77 has no operator overloading. Fortran 90 - has.
Check out Maxima - while it may be not as complete as mathematica, it can do a lot of symbolic algebra, including derivatives, integration and expression simplification (optimize function is great, it can eg. factor out common subexpressions).
The Weather Channel-sponsored drivers are doing great, I use them since August and now they are basically ready - see http://dri.sf.net/. The only disadvantage with respect to closed source drivers was inability to use some patented techniques (in particular texture compression), since the patent owner (S3?) did not grant (yet) the rights to use them in the driver. Otherwise, there are much more convienent to use than Nvidia drivers I have been forced to use on my other box. And more stable, too.
I like Linus' standpoint about the preemptive kernel. I agree with him that one should eliminate cause of latencies instead of addressing symptoms only.
I can imagine fighting with symptoms seems a simpler task but latencies result often from a bad design and it is better to fix the design once instead of implementing workarounds.
Saying that Linux NFS&Quota are terribly broken is a slight exaggeration. They have a number of bugs, plenty of things have to be improved - that's true - but they are functional as long as you don't try to export file system to another OS (we have similar problem here with Tru64).