Generally this is correct, certainly on UK model cars of old, but there are exceptions.
Landrover 2.25 litre petrol or diesel engines should easily reach 250,000 miles, and these were designed in the late 1950's. Landrover used this engine right into the 1980's with very few modifications over its lifetime https://en.wikipedia.org/wiki/Land_Rover_engines#2.25-litre_petrol_.28Engine_Codes_10H.2C_11H_and_13H.29
I would argue that it is not really an issue, we use laptops to code on here at work, but we have docking stations and external flat panels on them. I would definately agree that from a coding perspective vertical space matters, but doing any coding on a laptop screen is a pain anyway.
With that said, the developers here all have the external screen as primary, and rotate it 90 degrees to give a nice tall screen. We use the laptop screens for email, docs etc.
There have been a few people commenting that wide screen is best to have the explorers and palettes etc to each side, but in Visual Studio, we tend to have them unpinned, and tabbed anyway, unless using any one extensively. You can also have them 'torn off' completely and float them onto the laptop screen.
So, I don't see it as a big issue, having widescreen only laptops, and I guess the consumer will vote with their wallets.
So, Dell threaten to use AMD chips. Intel get a bit upset, and tries to arm twist Dell. What can Dell do here? The popular belief would be that Dell gets scared and stays with Intel.
Really? So they can get their chips cheaper from AMD, and supposedly the consumer wants AMD chips. So Dell says *fsck the consumer* and stays with Intel. Doesn't ring true to me...
Fact is that Dell sells a lot of PC's & Laptops, with Intel chips.... Kinda says that the consumer (at large) is happy to buy Intel based PC products, in my opinion.
As a software engineer, not as a gamer (I don't have the spare time), I notice that Intel chip based PC's perform faster at building software under.NET than AMD based ones do. You may cry that the compiler is optimised for Intel, but am I, as a developer bothered? No.
I count myself as a member of the consuming public, and I make my choice of PC based upon price & performance at what I want it to do. It is a tool after all. Therefor I buy Intel based PC products. Now if I was a brand enthusiast (as I am with my cars, I love Landrovers) then I would by whatever I was loyal too, regardless of the shortcomings, whatever they may be!
Just my views, take them or ignore them as you see fit:-)
If you don't have line of sight, I wouldn't hold your breath at 2.4 gigs. I wouldn't bother wasting time trying with laser.
Both technologies are inherently line of sight, 2.4 gz will suffer severe attenuation by anything in its path. It is possible to cause signals at vhf/uhf to bend over hill brows, but the signal will be attenuated severely due to scattering.
20 Km distance at 2.4 gig is going to need some fairly high gain antenna at both ends, even with line of sight, the figures for free space attenuation at this frequency can be found on the net, factor that with the lowest signal level above the noise floor (and the closer the received signal is to the noise floor, the slower that data link is going to be).
Sorry to sound negative, but I think you will need line of sight at 2.4g, I am 99.9 % sure you will with laser, at this range.
Just because someone else points out something the guy (mr DeCSS) writes, and gets linked to on the web, why does it (the new material) have to be 'greater' than his last work? Open source is about work in progress. This is surely a new idea, with some material to back up the idea?
Judge it on its merits. Do you want to know what is making the technology tick? Then FOLLOW this work. If not, then ignore the post. This guy is following precisely the steps necessary to keep research open. If this point deludes you, read 'The Cathedral and the Bazaar'
Why your post was modded ++N INSIGHTFUL is beyond me? I'd say FLAMEBAIT. Always give the results of ANY investigation to the community, when software is concerned. That is what we view here if we follow the link. The spirit is RIGHT, and that is what matters!
But the article says that they couldn't replicate the near vacuum that would have been present when the impact took place, so air resistance is not going to slow the foam that much. The speed of the impact should be able to be determined from the film of the impact which I seem to recall seeing some time ago. The film frame rate is known, so the speed should be calculable from this. It is after all I would think, the impact speed that matters.
Well, if you turn the carrier on & off, i.e. a square wave modulation, then the sidebands are 'infinitely' wide. If you use a sinewave of frequency x on carrier frequency y, the resulting frequencies are;- x, y, y+x, y-x
If you use up all your possible bandwidth the spectrum will take up all the frequencies from 0 to 1.5Ghz
Not exactly, if you (theoretically) modulate a 1.5 gig signal with a signal at half that frequency, two sidebands appear in this case from 0.75 gig to 2.25 gig is the resulting signal spread. So if you use all your possible bandwidth (and again this is theoretical, I know of no system that 'coud' do this) then a bandwidth of 0-3gig will result.
Interestingly, in this scenario (ie FM or AM modulation) the bandwidth consumed is double what the maximum modulating frequency is. So one sideband is 'wasted' as it carries a mirror of the others information. Also the carrier frequency itself is redundant, it carries no useful information. Given these facts, Single Side Band (SSB) is much more efficient in terms of bandwidth & power required (power saved in the transmission of carrier & one sideband can be used to increase the remaining sideband)
did you ever own one? I guess not because there were several plug in joystick adapters that allowed cartridge games to be used, lunar jetman & cookie were two games I remeber that were available on cartridge format.
I think it is a great shame that sites distributing old games like this are under threat. I own (and buy games for) a PS2, but still like the occasional blast on JetSet Willy, Manic Miner or Atic Atac
I think a more significant speed improvement in Java would be to remove the += operator for Strings. You wouldn't believe how badly one of those in a loop can tank an app's performance
I can beleive that, a java String is immutable, so if you += to one you have the overhead of creating a new String Object, and presumably garbage collection of the old one?
Didn't Porsche use this with his multi fuel vehicle before the second world war? I seem to recall this car had an electric motor in each wheel, with a petrol powered generator providing the power for them. He was very successful in competition with these cars.
Ok, maybe 100 dollars for the desktop o/s license. Throw in exchange for mail, sql7 for database, a web server, and it looks a little different I think...
So its not your cup of tea? How interesting then that just because the philosophy of free software/open source software doesn't make you want to chuck out your cathedral XP, that you will propose that it is uninteresting. My girlfriend thinks that any documentary about the universe/big bang/big crunch/string theory is uninteresting, but many people watch them anyway. Diversity of interests makes the world go round.
Bloody software? many people have a vested interest in software, for many reasons, and this video may be interesting to them.
If you don't agree with the conclusions whether drawn by the program maker, or yourself, then that's fine, but it doesn't mean that any one interested should be put off watching the film and drawing their own conclusions, surely?
Documenataries are not made to pat anyones back, they are made to show evidence and promote thought, something that your average cable/satellite crap doesn't. Usually, if you know nothing about the subject, and have no interest in it, you will not watch anyway, surely? If you do, then all views should be considered, so the film becomes relevant.
Yes, but that cell phone will be radiating almost all of its energy on a set frequency, with harmonics etc 60db or more down, so it has very little pollution. 3db equals a halving of power, go figure, but at 600mW, even 40db suppression of 'sproggies' means much less than 0.125mW is radiated spuriously. Sounds like this thing polutes...
No, I don't think the problem is a health one, but as has been pointed out, I think it will up the background noise level, meaning that other users of the rf spectrum will have less chance of using weak signals as they will be lost amid the higher noise levels. Ask any amateur radio enthusiast about computer/cordless phone noise etc, and other man made interference.
Radio HAMS are to radio like we are to computers, they see the problems before most people have heard of the cause. Marconi spark transmitters can have a vast range, due to HF emmisions ( a Marconi spark transmitter made the first America-England transmission), OK these things are going to have a bandwidth limitation, but people use 3ghz ++ too, If these devices become common, then services on these microwave bands will suffer to some extent.
Best mitigating circumstance is that amateur/professional microwave stuff is going to be using highly directional antennas, which will help keep signal/noise ratio high. There will I think be a detrimental effect though overall.
Maybe no-one at your job does know about Linux and how to find back doors in open source software, and maybe it would cost $80 an hour etc, etc,....
How much would it cost (if the source was available for the 'closed' windows apps) to do the same to the 'insert huge number here' lines of windows code and its servers?
Anyone who knows the free software way, as any IT department staff who have deployed it will, know that if there is a back door, then the word would spread quicker than syphilis in a brothel over the net.
As for technical problems with the code? don't we use stable/development labels for that very reason? Installing stable code means stable.
And for installation issues, or setup issues, then you do have IT staff right? The phrase RTFM was conjured up for lazy people who want a free ride, any IT department worth its salt that has deployed Linux will not be having issues with setup/installation.
If the problem you describe is bespoke software, then you will pay $80 an hour I should think regardless of the platform/system anyway.
Doesn't make any difference what he was pointing it at. Only thing that makes any difference is polarization, but he would still need to point the directional antenna at the destination, if the design is right. The omnidirectional antenna will in all probability be vertically polarized, so the radiated lobe of the omni will be slightly raised in relation to the ground, but even then he still should have to point straight at it with the directional.
In the article, he describes having to point the antenna to one side of the target. This sounds rather like the antenna dimensions were wrong. In a yagi array, the main lobe will be to the front, with minor lobes coming off at various angles. The same should be true of any antenna (directional) either waveguide or dish. I couldn't see where he'd allowed for 'velocity factor' in any material length calculations. Also, when constructing a half wave di-pole radiating element, the capcitance across the antenna will cause actual dimensions to be shorter than theoretical. Driven element spacing also affects the shape of the pattern. It can be that a lower overall gain acheives better results than by having a better radiated pattern, the pattern can be affected by driven element position etc. Its a very technical subject, its worthwhile looking at the 'VHF & UHF Handbook' for more information. Still, a very interesting article combining two of my interests!
This is something that concerns me too. In September I am starting an HND course in computer studies in the UK, and am hoping that I am not locked in this way. There are such a diverse range of different systems in use around the country/world that I feel it is important for students to be able to use the environment that interests them most. After all it allows individual talents to flourish.
Scotch tape? mmm.. Yeah right, sounds like an early april fool to me. Think a bit, the laser focuses on the layer within the roll? Ha ha, ever seen a roll of cellotape? the things bulge etc. You can't guarantee the thickness of the adhesive so how do you propose to focus the bloody laser einstein? P.S. My hardrive wobbled, so I'm booting my linux system from an old Smiths C15 data cassette coupled to my soundcard.
In the day and age where you can sue your own parents for not making you clean your teeth properly when you were an infant, I'm sure you can sue them for something..
yes, it's a shame really about usenet. I think however that what we want to know via wired means should not necessarilly mean usenet..
like the man says, we taught latin for a thousand years beyond it's relevance. I find the information I need from the internet today, as you do. If it doesn't come by usenet, so what? We will use whatever means we devise to learn from the resources we can muster.
Slashdot Mirror
Generally this is correct, certainly on UK model cars of old, but there are exceptions.
Landrover 2.25 litre petrol or diesel engines should easily reach 250,000 miles, and these were designed in the late 1950's. Landrover used this engine right into the 1980's with very few modifications over its lifetime
https://en.wikipedia.org/wiki/Land_Rover_engines#2.25-litre_petrol_.28Engine_Codes_10H.2C_11H_and_13H.29
I would argue that it is not really an issue, we use laptops to code on here at work, but we have docking stations and external flat panels on them. I would definately agree that from a coding perspective vertical space matters, but doing any coding on a laptop screen is a pain anyway.
With that said, the developers here all have the external screen as primary, and rotate it 90 degrees to give a nice tall screen. We use the laptop screens for email, docs etc.
There have been a few people commenting that wide screen is best to have the explorers and palettes etc to each side, but in Visual Studio, we tend to have them unpinned, and tabbed anyway, unless using any one extensively. You can also have them 'torn off' completely and float them onto the laptop screen.
So, I don't see it as a big issue, having widescreen only laptops, and I guess the consumer will vote with their wallets.
My views, no flames please, lol
.NET than AMD based ones do. You may cry that the compiler is optimised for Intel, but am I, as a developer bothered? No.
:-)
So, Dell threaten to use AMD chips. Intel get a bit upset, and tries to arm twist Dell. What can Dell do here? The popular belief would be that Dell gets scared and stays with Intel.
Really? So they can get their chips cheaper from AMD, and supposedly the consumer wants AMD chips. So Dell says *fsck the consumer* and stays with Intel. Doesn't ring true to me...
Fact is that Dell sells a lot of PC's & Laptops, with Intel chips.... Kinda says that the consumer (at large) is happy to buy Intel based PC products, in my opinion.
As a software engineer, not as a gamer (I don't have the spare time), I notice that Intel chip based PC's perform faster at building software under
I count myself as a member of the consuming public, and I make my choice of PC based upon price & performance at what I want it to do. It is a tool after all. Therefor I buy Intel based PC products. Now if I was a brand enthusiast (as I am with my cars, I love Landrovers) then I would by whatever I was loyal too, regardless of the shortcomings, whatever they may be!
Just my views, take them or ignore them as you see fit
Im lucky if I see 12 miles from a gallon in my series 2 landrover...
If you don't have line of sight, I wouldn't hold your breath at 2.4 gigs. I wouldn't bother wasting time trying with laser.
Both technologies are inherently line of sight, 2.4 gz will suffer severe attenuation by anything in its path. It is possible to cause signals at vhf/uhf to bend over hill brows, but the signal will be attenuated severely due to scattering.
20 Km distance at 2.4 gig is going to need some fairly high gain antenna at both ends, even with line of sight, the figures for free space attenuation at this frequency can be found on the net, factor that with the lowest signal level above the noise floor (and the closer the received signal is to the noise floor, the slower that data link is going to be).
Sorry to sound negative, but I think you will need line of sight at 2.4g, I am 99.9 % sure you will with laser, at this range.
Terry G7JFI
Just because someone else points out something the guy (mr DeCSS) writes, and gets linked to on the web, why does it (the new material) have to be 'greater' than his last work? Open source is about work in progress. This is surely a new idea, with some material to back up the idea?
Judge it on its merits. Do you want to know what is making the technology tick? Then FOLLOW this work. If not, then ignore the post. This guy is following precisely the steps necessary to keep research open. If this point deludes you, read 'The Cathedral and the Bazaar'
Why your post was modded ++N INSIGHTFUL is beyond me? I'd say FLAMEBAIT. Always give the results of ANY investigation to the community, when software is concerned. That is what we view here if we follow the link. The spirit is RIGHT, and that is what matters!
merlin
I just had to say it...
But the article says that they couldn't replicate the near vacuum that would have been present when the impact took place, so air resistance is not going to slow the foam that much. The speed of the impact should be able to be determined from the film of the impact which I seem to recall seeing some time ago. The film frame rate is known, so the speed should be calculable from this. It is after all I would think, the impact speed that matters.
Well, if you turn the carrier on & off, i.e. a square wave modulation, then the sidebands are 'infinitely' wide. If you use a sinewave of frequency x on carrier frequency y, the resulting frequencies are;-
x,
y,
y+x,
y-x
Not exactly, if you (theoretically) modulate a 1.5 gig signal with a signal at half that frequency, two sidebands appear in this case from 0.75 gig to 2.25 gig is the resulting signal spread. So if you use all your possible bandwidth (and again this is theoretical, I know of no system that 'coud' do this) then a bandwidth of 0-3gig will result. Interestingly, in this scenario (ie FM or AM modulation) the bandwidth consumed is double what the maximum modulating frequency is. So one sideband is 'wasted' as it carries a mirror of the others information. Also the carrier frequency itself is redundant, it carries no useful information. Given these facts, Single Side Band (SSB) is much more efficient in terms of bandwidth & power required (power saved in the transmission of carrier & one sideband can be used to increase the remaining sideband)
did you ever own one? I guess not because there were several plug in joystick adapters that allowed cartridge games to be used, lunar jetman & cookie were two games I remeber that were available on cartridge format.
I think it is a great shame that sites distributing old games like this are under threat. I own (and buy games for) a PS2, but still like the occasional blast on JetSet Willy, Manic Miner or Atic Atac
I think a more significant speed improvement in Java would be to remove the += operator for Strings. You wouldn't believe how badly one of those in a loop can tank an app's performance
I can beleive that, a java String is immutable, so if you += to one you have the overhead of creating a new String Object, and presumably garbage collection of the old one?
Didn't Porsche use this with his multi fuel vehicle before the second world war? I seem to recall this car had an electric motor in each wheel, with a petrol powered generator providing the power for them. He was very successful in competition with these cars.
Ok, maybe 100 dollars for the desktop o/s license. Throw in exchange for mail, sql7 for database, a web server, and it looks a little different I think...
So its not your cup of tea? How interesting then that just because the philosophy of free software/open source software doesn't make you want to chuck out your cathedral XP, that you will propose that it is uninteresting. My girlfriend thinks that any documentary about the universe/big bang/big crunch/string theory is uninteresting, but many people watch them anyway. Diversity of interests makes the world go round.
Bloody software? many people have a vested interest in software, for many reasons, and this video may be interesting to them.
If you don't agree with the conclusions whether drawn by the program maker, or yourself, then that's fine, but it doesn't mean that any one interested should be put off watching the film and drawing their own conclusions, surely?
Documenataries are not made to pat anyones back, they are made to show evidence and promote thought, something that your average cable/satellite crap doesn't. Usually, if you know nothing about the subject, and have no interest in it, you will not watch anyway, surely? If you do, then all views should be considered, so the film becomes relevant.
My views, take them as you will
Yes, but that cell phone will be radiating almost all of its energy on a set frequency, with harmonics etc 60db or more down, so it has very little pollution. 3db equals a halving of power, go figure, but at 600mW, even 40db suppression of 'sproggies' means much less than 0.125mW is radiated spuriously. Sounds like this thing polutes...
No, I don't think the problem is a health one, but as has been pointed out, I think it will up the background noise level, meaning that other users of the rf spectrum will have less chance of using weak signals as they will be lost amid the higher noise levels. Ask any amateur radio enthusiast about computer/cordless phone noise etc, and other man made interference.
Radio HAMS are to radio like we are to computers, they see the problems before most people have heard of the cause. Marconi spark transmitters can have a vast range, due to HF emmisions ( a Marconi spark transmitter made the first America-England transmission), OK these things are going to have a bandwidth limitation, but people use 3ghz ++ too, If these devices become common, then services on these microwave bands will suffer to some extent.
Best mitigating circumstance is that amateur/professional microwave stuff is going to be using highly directional antennas, which will help keep signal/noise ratio high. There will I think be a detrimental effect though overall.
Maybe no-one at your job does know about Linux and how to find back doors in open source software, and maybe it would cost $80 an hour etc, etc,....
How much would it cost (if the source was available for the 'closed' windows apps) to do the same to the 'insert huge number here' lines of windows code and its servers?
Anyone who knows the free software way, as any IT department staff who have deployed it will, know that if there is a back door, then the word would spread quicker than syphilis in a brothel over the net.
As for technical problems with the code? don't we use stable/development labels for that very reason? Installing stable code means stable.
And for installation issues, or setup issues, then you do have IT staff right? The phrase RTFM was conjured up for lazy people who want a free ride, any IT department worth its salt that has deployed Linux will not be having issues with setup/installation.
If the problem you describe is bespoke software, then you will pay $80 an hour I should think regardless of the platform/system anyway.
Doesn't make any difference what he was pointing it at. Only thing that makes any difference is polarization, but he would still need to point the directional antenna at the destination, if the design is right. The omnidirectional antenna will in all probability be vertically polarized, so the radiated lobe of the omni will be slightly raised in relation to the ground, but even then he still should have to point straight at it with the directional.
Terry
In the article, he describes having to point the antenna to one side of the target. This sounds rather like the antenna dimensions were wrong. In a yagi array, the main lobe will be to the front, with minor lobes coming off at various angles. The same should be true of any antenna (directional) either waveguide or dish. I couldn't see where he'd allowed for 'velocity factor' in any material length calculations. Also, when constructing a half wave di-pole radiating element, the capcitance across the antenna will cause actual dimensions to be shorter than theoretical. Driven element spacing also affects the shape of the pattern. It can be that a lower overall gain acheives better results than by having a better radiated pattern, the pattern can be affected by driven element position etc. Its a very technical subject, its worthwhile looking at the 'VHF & UHF Handbook' for more information. Still, a very interesting article combining two of my interests!
Like it!! After one week back at our MS sponsored college!
Sad thing is we are learning the STL using vis C++!!
Ah well, glad I can take the HND and go, self educated so as not to be tempted to the dark side!
merlin.
This is something that concerns me too. In September I am starting an HND course in computer studies in the UK, and am hoping that I am not locked in this way. There are such a diverse range of different systems in use around the country/world that I feel it is important for students to be able to use the environment that interests them most. After all it allows individual talents to flourish.
Scotch tape? mmm.. Yeah right, sounds like an early april fool to me. Think a bit, the laser focuses on the layer within the roll? Ha ha, ever seen a roll of cellotape? the things bulge etc. You can't guarantee the thickness of the adhesive so how do you propose to focus the bloody laser einstein? P.S. My hardrive wobbled, so I'm booting my linux system from an old Smiths C15 data cassette coupled to my soundcard.
In the day and age where you can sue your own parents for not making you clean your teeth properly when you were an infant, I'm sure you can sue them for something..
yes, it's a shame really about usenet. I think however that what we want to know via wired means should not necessarilly mean usenet..
like the man says, we taught latin for a thousand years beyond it's relevance. I find the information I need from the internet today, as you do. If it doesn't come by usenet, so what? We will use whatever means we devise to learn from the resources we can muster.