It is unfortunate, but true. NASA needs to have a good public image if it wants to get funded, because if people don't like it, they won't vote for politicians that fund it...
If you had read the article you would see that it has variable position mud flaps in the front that change the aero-hydro performance of the machine.
Even if it did not have that feature, it would be very easy to design a shape that, taking into account the fact that air and water have enormously different densities, would spoil lift for high speed land applications and still lift up out of the water at comparatively tiny speeds...
Durability?
on
Landshark
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· Score: 5, Interesting
The combined drive system is really clever, but I wonder how it will hold up... The impeller is mounted on the drive wheel, the wheel moves over the uneven surface of the road, and adsorbs shocks from all the bumps, so what I want to know is: how the heck are you going to build impeller seals that will hold up to that and still hold a tight tolerance?
I work for a company that is trying to migrate from Sun to PCs, and (against my advice) chose the windows NT line (it won largely on the support argument). For some of our in house applications we do a lot of parallel computing, NT was simply not able to do a lot of what we needed it to do. Anyone care to guess how much support we have gotten? We have gotten none, MS responded to our complaints by telling us (paraphrased) 'you need to find a way to hack our system'.
In closing... You have to consider the quality, and amount of support you get for the commercial stuff, not just that they claim there is support.
These are all steps in the right direction, but I don't really see any of them being any more effective than the slap on the wrist that they already got in the US.
To me, it seems like the EU is powerless to stop MS monopolistic practices.
... if there was one primary for everyone, republicans, democrats, indepents, greens, reform... Then the top two vote getters in that election go head to head, with no other canidates in the mix.
I personally think this would be a great way to handle things... But I also think that the current system is so entrenched that it isn't going anywhere...
You are completely right, but this can be a very dangerous thing to try to do. I work in computational fluid dynamics, and some people advocate doing this kind of CFD (tuning turbulence models to match data of very complex things usually) this leads to some bad mojo most of the time. you get codes that look good when you use them on multistage axial flow trans-sonic compressors (for example) because it was tuned to that, but it can't solve flow in an axisymetric duct! Then people think the code is great and start to trust it until it misses in a huge way on something that is a little different that what it was tuned to and everyone freaks out!
I REALLY think that the only way to do this kind of thing correctly when you don't match data, is to go back and look at the set up/first principles... Were your boundary condition assumptions fair? Did you assume anything was insignificant, was it?... that sort of thing. Tuning is something that scares the crap out of me, mostly because it sounds like a good idea to most people.
I agree, I know this may make me unpopular around here, but I hate anime (most anime). The rest of adult swim is great, particullary the Aqua Teen Hunger Force.
Where else can fast food crime fighters rid the world of giant evil rap star spiders? No where but Adult Swim...
in today's greedy environment people would hold onto stocks only if they produce high dividends in the short term, today's investor will not stick around if the company said that profits will suck for the next year because we need to look out for our future. They would sell and by something that performs in the short term...
If fact it kinda works that way now... Companies that produse earnings growth consistantly grow consistantly in stock price, regardless of whether or not the business is getting healthier. So the CEO's with their stock options cut everything in sight to maintain growth, so they can boost the price and sell thier options.
The real problem is that it is very difficult to tell the difference between healty and unhealthy cutting...
Although most of what you said is indisputably true, I have to say that contraception is merely a risk reducer when it comes to risking pregnancy when you have to sex. I still believe that people who feel they are mature enough, and responsible enough to engage in sex, need to be mature enough and responsible enough to accept this reduced risk. There is one fact in this discussion, pregnancy doesn't happen to the sexually inactive.
I would like to thank you for not "going off" I am very much in the minority on this issue when it comes to my social circles, and I appreciate the rational conversation on the matter. I usually only encounter closed minded, almost violent responses to my views.
I don't see how the blind hatred of people for their skin color is different than blind hatred for those that make decisions that do not concern yourself.
Many people don't see it as a decision that doesn't concern them. There is someone running around the east coast of the US killing people who I don't know. There are also doctors all over the world that are killing unborn people who I have never met. Yet everyone seems really concerned about the sniper, and not about the abortions. You could say the sniper is different because it could be me next, well I could have been aborted too, but I wasn't so I will look out for those who might be in the future.
Removing a mass of fetal matter from it's unwilling host
There is nothing unwilling about the host! People (women AND men) should not choose to have sex if they can not risk having a pregnancy. Remember, unless they were forced to have sex, they are a willing host. And just because it's legal doesn't mean it's right. I really hope that the world pulls it's head out of it's ass and realizes that legal murder is going on everywhere.
A little googling will show that there is an enormous amount of evidence that the fetus is conscious (it's own life) form fairly early in the pregnancy.
don't dismiss me as some kind of religious wacko, I am an athiest.
one last thing: I am not against womens rights, I am for fetal rights, there is an important difference.
If people are selling it back to you, then they are selling the improvement only, not the whole thing, you still have what they improved on, what your taxes paid for, and anyone can get it...
If you don't want to pay for an improvment, then don't pay for it, but thinking that you deserve to have the improvement anyway is wrong.
Gas turbines do scale up better, and they are more efficient. Diesels are more efficient in the small ranges, and gas turbines are naturally (think basic cycle definitions) MUCH more efficient, but it is hard to design and manufacture all the parts for small gas turbines without terrible efficiency losses (when the gas path gets that narrow, it is much more important to consider boundary effects, which is difficult to do...). In the power range they are talking about, a gas turbine IS more efficient, but more expensive to maintain.
disclaimer: I work for the company that makes the engine we are discussing, but I deal with military jet engines most of the time...
Slashdot Mirror
It is unfortunate, but true. NASA needs to have a good public image if it wants to get funded, because if people don't like it, they won't vote for politicians that fund it...
If you had read the article you would see that it has variable position mud flaps in the front that change the aero-hydro performance of the machine.
Even if it did not have that feature, it would be very easy to design a shape that, taking into account the fact that air and water have enormously different densities, would spoil lift for high speed land applications and still lift up out of the water at comparatively tiny speeds...
The combined drive system is really clever, but I wonder how it will hold up... The impeller is mounted on the drive wheel, the wheel moves over the uneven surface of the road, and adsorbs shocks from all the bumps, so what I want to know is: how the heck are you going to build impeller seals that will hold up to that and still hold a tight tolerance?
His point is to slap some real useable software on top of any OS
didn't microsoft try this already? Remember MS Bob, oh man if you though windows was lame, just re-live that failed front end.
I am sure whatever this guy is trying will probably be better, but I don't know how well it will catch on...
I work for a company that is trying to migrate from Sun to PCs, and (against my advice) chose the windows NT line (it won largely on the support argument). For some of our in house applications we do a lot of parallel computing, NT was simply not able to do a lot of what we needed it to do. Anyone care to guess how much support we have gotten? We have gotten none, MS responded to our complaints by telling us (paraphrased) 'you need to find a way to hack our system'.
In closing...
You have to consider the quality, and amount of support you get for the commercial stuff, not just that they claim there is support.
These are all steps in the right direction, but I don't really see any of them being any more effective than the slap on the wrist that they already got in the US.
To me, it seems like the EU is powerless to stop MS monopolistic practices.
Could someone explain what the EU has power to do?
Seems to me like they couldn't do much...
... if there was one primary for everyone, republicans, democrats, indepents, greens, reform... Then the top two vote getters in that election go head to head, with no other canidates in the mix.
I personally think this would be a great way to handle things... But I also think that the current system is so entrenched that it isn't going anywhere...
Read the thread before you post...
They are talking about the fact that there will be SOME gas in the tube, not much, but it will be there.
Aerospace engineers have been doing this kind of problem in the lab for years, we call them shock tubes, you can also check google.
You are completely right, but this can be a very dangerous thing to try to do. I work in computational fluid dynamics, and some people advocate doing this kind of CFD (tuning turbulence models to match data of very complex things usually) this leads to some bad mojo most of the time. you get codes that look good when you use them on multistage axial flow trans-sonic compressors (for example) because it was tuned to that, but it can't solve flow in an axisymetric duct! Then people think the code is great and start to trust it until it misses in a huge way on something that is a little different that what it was tuned to and everyone freaks out!
I REALLY think that the only way to do this kind of thing correctly when you don't match data, is to go back and look at the set up/first principles... Were your boundary condition assumptions fair? Did you assume anything was insignificant, was it?... that sort of thing. Tuning is something that scares the crap out of me, mostly because it sounds like a good idea to most people.
I agree, I know this may make me unpopular around here, but I hate anime (most anime).
The rest of adult swim is great, particullary the Aqua Teen Hunger Force.
Where else can fast food crime fighters rid the world of giant evil rap star spiders?
No where but Adult Swim...
how did this get moded offtopic, it's funny...
Thanks,
my bad...
clearly he doesn't have anything against koreans, he married one...
in today's greedy environment people would hold onto stocks only if they produce high dividends in the short term, today's investor will not stick around if the company said that profits will suck for the next year because we need to look out for our future. They would sell and by something that performs in the short term...
If fact it kinda works that way now... Companies that produse earnings growth consistantly grow consistantly in stock price, regardless of whether or not the business is getting healthier. So the CEO's with their stock options cut everything in sight to maintain growth, so they can boost the price and sell thier options.
The real problem is that it is very difficult to tell the difference between healty and unhealthy cutting...
If you have sex, then you clearly did not take ALL precautions...
If you are sexually active and you think that there is not even the most remote possibility of getting an STD you are kidding yourself..
I am not trying to preach, I don't think abstinence is the right answer, I just think that sex comes with risks and people need to acknowledge them.
do a little research and you will see that the fetus is sentient as well.
I never said just say no, I said accept the risk
Although most of what you said is indisputably true, I have to say that contraception is merely a risk reducer when it comes to risking pregnancy when you have to sex. I still believe that people who feel they are mature enough, and responsible enough to engage in sex, need to be mature enough and responsible enough to accept this reduced risk. There is one fact in this discussion, pregnancy doesn't happen to the sexually inactive.
I would like to thank you for not "going off" I am very much in the minority on this issue when it comes to my social circles, and I appreciate the rational conversation on the matter. I usually only encounter closed minded, almost violent responses to my views.
I don't see how the blind hatred of people for their skin color is different than blind hatred for those that make decisions that do not concern yourself.
Many people don't see it as a decision that doesn't concern them. There is someone running around the east coast of the US killing people who I don't know. There are also doctors all over the world that are killing unborn people who I have never met. Yet everyone seems really concerned about the sniper, and not about the abortions. You could say the sniper is different because it could be me next, well I could have been aborted too, but I wasn't so I will look out for those who might be in the future.
Removing a mass of fetal matter from it's unwilling host
There is nothing unwilling about the host! People (women AND men) should not choose to have sex if they can not risk having a pregnancy. Remember, unless they were forced to have sex, they are a willing host. And just because it's legal doesn't mean it's right. I really hope that the world pulls it's head out of it's ass and realizes that legal murder is going on everywhere.
A little googling will show that there is an enormous amount of evidence that the fetus is conscious (it's own life) form fairly early in the pregnancy.
don't dismiss me as some kind of religious wacko, I am an athiest.
one last thing: I am not against womens rights, I am for fetal rights, there is an important difference.
If people are selling it back to you, then they are selling the improvement only, not the whole thing, you still have what they improved on, what your taxes paid for, and anyone can get it...
If you don't want to pay for an improvment, then don't pay for it, but thinking that you deserve to have the improvement anyway is wrong.
they do combined cycle diesels too, and they are not past the mid 50s in efficiency. Diesels without the combined cycle are lucky to hit 50.
5-10% may not sound like alot but it is huge! hell, 1% is huge when you are talking about this stuff...
Jet A and diesel ARE almost identicle. AND for not flight aplications you can get a gas turbine to run on just about anything with very slight mods...
Gas turbines do scale up better, and they are more efficient. Diesels are more efficient in the small ranges, and gas turbines are naturally (think basic cycle definitions) MUCH more efficient, but it is hard to design and manufacture all the parts for small gas turbines without terrible efficiency losses (when the gas path gets that narrow, it is much more important to consider boundary effects, which is difficult to do...). In the power range they are talking about, a gas turbine IS more efficient, but more expensive to maintain.
disclaimer: I work for the company that makes the engine we are discussing, but I deal with military jet engines most of the time...