A Sidewinder is an IR-seeking (i.e. heat sinking) missile. Also, good luck getting a fighter aircraft that can mount one into range.
Jobs isn't on conference calls
on
Apple After Jobs
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· Score: 5, Informative
I guess submitter doesn't listen to many quarterly calls, because Steve is literally never on them, and certainly hasn't been in the last year. Peter Oppenheimer, Apple's CFO, runs those calls. His not being on the Q3 call is simply business as usual, not something special.
I was under the impression that H1B-type visas were for skilled workers of which there was a shortage in the US. It goes against the entire purpose of the program to say 'We can't find people to fill these positions domestically, we have to import them.', and when these are jobs that are only available because the Americans currently doing them are being fired. This sounds less like a job for the Oldsmar city council and more like a job for Congress, to address this complete abuse of the visa program. Sounds like everyone should call their Congressperson and ask them to inquire with the INS about just how and why these visas were granted and continue to be granted to Tata Consultancy.
Roosevelt never served in the military, except for being Undersecretary of the Navy during the Wilson administration. Perhaps you have him confused with Theodore Roosevelt (who was also Undersecretary of the Navy), who served during the Spanish-American War.
How the hell can you reply to a post singling out monosaturated fats by arguing that a diet composed of bacon, which is full of a totally different family of fats, isn't the best idea? One of the main points of this article is that all fats are not created equal, so how did you manage to throw a bunch of technical jargon into your reply but make the mistake of equating bacon to olive oil or nuts?
I have to take issue here. "n"-phase power supplies in motherboard parlance refer to different Buck-style switching regulator setups. A basic Buck regulator turns on a MOSFET (generally) to switch current into an inductor and capacitor, with a diode in parallel (you can google buck topology if you like). Thus, as the power drains out of the capacitor into the load, the switcher recharges it with little sips of current every couple of microseconds, resulting in a stable voltage from the point of view of the load. MOSFETs have a fairly hard limit on allowable pulse current and power dissipation that they can tolerate. In order to switch more power, you can put a whole bunch of MOSFETs in parallel, or use a really big one, but then you're switching a huge amount of current all at once through your poor little inductor and capacitor, each of which also have ripple current ratings you should not exceed. So, instead, you get a switcher IC capable of controlling multiple phases (for instance the 4-phase L6714 from ST Micro if you're interested in powering an AMD64 processor) and 4 different MOSFETs, and each time the load capacitor must be recharged (again, every 1-5 microseconds), the IC will switch on one MOSFET after the other in sequence, resulting in a more steady load voltage, and a lower ripple current on the inductors and capacitors. This has multiple advantages for voltage quality, heat dissipation, and component life. The fact that it's subject to silly marketing does not mean they'd be stupid enough to buy 12 MOSFETs and expensive power controllers if they didn't need to for technical reasons.
He's just one US citizen. If he wants to have influence on Congress he can vote like the rest of us. The fact that he can't get personal meetings with them should be surprising or distressing, regardless of his net worth, given how difficult it would be for everyone else.
Alan Cox is an important leader and resource in the Linux community. On behalf of all Linux users, I hope that, for the sake of our collective Cox, manufacturers can sort out these battery issues.
If an Earth-orbiting satellite dipped as low as 150km, it would burn up/reenter. Mars has a much thinner atmosphere -- the same distances do not apply. ISS is generally in the 300-400km range and it loses on the order of 1km/week due to atmospheric drag.
So, these smokestack filters pick and choose which molecules to trap based on analysis of their individual boiling points relative to some reference? Anything is a gas at a high enough temperature. Filters must work on some actual physical principle, not magic; they must discriminate based on particle size or some chemical property possessed by the specific pollutants being filtered. To say nothing of the fact that you are simply wrong on this point; coal power plants do release thousands of tons of mild radioactive waste that is the same or worse that gets anti-nuke environmentalists all upset, and it puts it into the air. Mild alpha emitters like those natural isotopes do not represent a problem in the dirt -- the alpha particles are stopped by the dirt, your shoes, your clothes, the air, your dead skin, etc. Breathing them in particulate form is not safe. In a nuclear power plant, even without reprocessing, which would eliminate most nuclear waste and use it as fuel, the waste is still contained in the reactor chamber until it is removed. Re: the leukemia sufferers around the Irish sea, your last argument was that radioactive material could not possibly be the cause of cancer around coal plants, and leukemia is a cancer. You can't have your cake and eat it too. For an "obsessive maths geek", you should know better than to throw around figures like 90% efficiency. Assuming a cold sink temperature of 25 C (298 K) for said hydrogen engine, the combustion temperature would need to be 2980 K (carnot eff. = 1 - Tl/Th), or 4900 degrees Fahrenheit, assuming your hydrogen engine was a Carnot heat engine, which it's not. I didn't say a thing about using fossil fuels; I agree that using non-carbon neutral sources like fossil fuels is idiotic for a variety of reasons. I was simply supplying one example of the many possible carbon neutral fuels that make far more sense from a practical standpoint (as opposed to the standpoint of a stoned hippie), such as plant-matter derived alcohols, and biodiesel.
You're simply misinformed. In any event, thorium is present is higher concentrations in coal than is uranium. Filters do not catch it. Estimates are that 10,000 times as much radioactive material is released from a coal power plant than from a nuclear power plant. This is borne out in cancer statistics in the areas around coal plants, etc. In fact, the uranium released from a coal plant would produce more energy when burned in a fission reactor than the entire mass of the coal it came from in the first place. See this article. Simple sanity check: How's a coal powerplant smokestack filter going to catch thorium oxide if it's not stopping carbon dioxide? The size of the molecules is not significantly different. Additionally, if it is catching those many tons of thorium and uranium, where are all the nuclear waste disposal people dealing with the spent smokestack filters that by onw are surely clogged with tons of radioactive metal compounds? Don't kid yourself. Nuclear is clean and safe. Hydrogen power, on the other hand, is idiotic. Releasing CO2 into the atmosphere is fine as long as it comes from a carbon neutral source. If you were producing methanol from plants and burning that in cars (not farfetched, seeing as several racing leagues use it), it would not matter that CO2 was released, because each molecule of CO2 would be one that was taken out of the atmosphere a few months prior to grow the plant feedstock in the first place. The lack of a carbon in H2 is not an advantage. The very real disadvantages of H2, such as difficult of containment and poor energy/volume, still stand.
No. 62 miles is the completely arbitrary definition of "space", but a space elevator that ended at that altitude would simply fall back down. By necessity, the center of mass (radially from the surface of the Earth) must be at or near geosynchronous orbit, so it naturally remains centered over its ground anchor. Geosynchronous orbit is at 22,241 miles above sea level. So, by gradually tapering the cable and extending it past GEO, the center of mass ends up there. Alternatively, you can have a large mass like a captured asteroid or something as an anchor just on the far side of GEO, although you should also have some counterweights you can move around on the cable to keep the center of mass in the right place as a load moves up from the surface. Additionally, keeping the center of mass just a little bit further out that necessary ensures that the space elevator will have just enough tension to keep it taut, giving the climbers an easier job.
Getting venture capital is not "winning". It is a very expensive form of financing, in terms of dilution, and should be exercised as a last resort. The effective interest rate of venture capital (if it were to be compared to a loan), in terms of the return expected by VC, is around 20-25%.
Space probe RTGs (radioisotope thermoelectric generators) are just that..thermoelectric. Not betavoltaic. Despite the fact that Pu-238 undergoes beta decay, the beta particles are simply used to generate heat, not directly converted to electric current. Typically you have 72 little pellets of Pu-oxide each wrapped in Indium, and these maintain a steady state 700 C temperature difference to ambient, allowing even inefficient Peltier junctions to convert the heat differential into a steady 400 Watts or so (although due to the 78 year half life, Voyager/Pioneer are now well below 100 Watts, I believe). You are correct that micropower applications such as pacemakers use betavoltaic cells, however.
You can always get a high paying job in the private sector and get a part time position as adjunct faculty at a local university. Many of the adjunct faculty in my undergrad were in that situation, and they were among the best teachers in the department (electrical engineering).
Additionally, they were using commercially pure (CP) titanium; that is to say, unalloyed. This made it possible to form it into the shapes required, but it's extraordinarily weak, normally only used for decoration or for applications that need a corrosion resistant material (racks for aluminum anodization are made of CP titanium). Alloyed aluminum of pretty much any type is going to be cheaper, easier to form/machine, and much stronger. And with a decent anodization, it will be far more scratch resistant.
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A Sidewinder is an IR-seeking (i.e. heat sinking) missile. Also, good luck getting a fighter aircraft that can mount one into range.
I guess submitter doesn't listen to many quarterly calls, because Steve is literally never on them, and certainly hasn't been in the last year. Peter Oppenheimer, Apple's CFO, runs those calls. His not being on the Q3 call is simply business as usual, not something special.
I was under the impression that H1B-type visas were for skilled workers of which there was a shortage in the US. It goes against the entire purpose of the program to say 'We can't find people to fill these positions domestically, we have to import them.', and when these are jobs that are only available because the Americans currently doing them are being fired. This sounds less like a job for the Oldsmar city council and more like a job for Congress, to address this complete abuse of the visa program. Sounds like everyone should call their Congressperson and ask them to inquire with the INS about just how and why these visas were granted and continue to be granted to Tata Consultancy.
Roosevelt never served in the military, except for being Undersecretary of the Navy during the Wilson administration. Perhaps you have him confused with Theodore Roosevelt (who was also Undersecretary of the Navy), who served during the Spanish-American War.
Actually, a Terminator's power cells only last for 120 years. Sorry.
How the hell can you reply to a post singling out monosaturated fats by arguing that a diet composed of bacon, which is full of a totally different family of fats, isn't the best idea? One of the main points of this article is that all fats are not created equal, so how did you manage to throw a bunch of technical jargon into your reply but make the mistake of equating bacon to olive oil or nuts?
I have to take issue here. "n"-phase power supplies in motherboard parlance refer to different Buck-style switching regulator setups. A basic Buck regulator turns on a MOSFET (generally) to switch current into an inductor and capacitor, with a diode in parallel (you can google buck topology if you like). Thus, as the power drains out of the capacitor into the load, the switcher recharges it with little sips of current every couple of microseconds, resulting in a stable voltage from the point of view of the load. MOSFETs have a fairly hard limit on allowable pulse current and power dissipation that they can tolerate.
In order to switch more power, you can put a whole bunch of MOSFETs in parallel, or use a really big one, but then you're switching a huge amount of current all at once through your poor little inductor and capacitor, each of which also have ripple current ratings you should not exceed.
So, instead, you get a switcher IC capable of controlling multiple phases (for instance the 4-phase L6714 from ST Micro if you're interested in powering an AMD64 processor) and 4 different MOSFETs, and each time the load capacitor must be recharged (again, every 1-5 microseconds), the IC will switch on one MOSFET after the other in sequence, resulting in a more steady load voltage, and a lower ripple current on the inductors and capacitors. This has multiple advantages for voltage quality, heat dissipation, and component life.
The fact that it's subject to silly marketing does not mean they'd be stupid enough to buy 12 MOSFETs and expensive power controllers if they didn't need to for technical reasons.
He's just one US citizen. If he wants to have influence on Congress he can vote like the rest of us. The fact that he can't get personal meetings with them should be surprising or distressing, regardless of his net worth, given how difficult it would be for everyone else.
Andy Ihnatko is a former MacWorld columnist from 10-15 years ago. The slant of the article shouldn't really be surprising in that light.
Alan Cox is an important leader and resource in the Linux community. On behalf of all Linux users, I hope that, for the sake of our collective Cox, manufacturers can sort out these battery issues.
Rsync makes incremental backups. It's possible to roll back to any previous date.
If an Earth-orbiting satellite dipped as low as 150km, it would burn up/reenter. Mars has a much thinner atmosphere -- the same distances do not apply. ISS is generally in the 300-400km range and it loses on the order of 1km/week due to atmospheric drag.
What the hell did you spend $70k on, then?
Challenger's o-ring breach was in the solid rocket booster, which is not cryogenic.
So, these smokestack filters pick and choose which molecules to trap based on analysis of their individual boiling points relative to some reference? Anything is a gas at a high enough temperature. Filters must work on some actual physical principle, not magic; they must discriminate based on particle size or some chemical property possessed by the specific pollutants being filtered. To say nothing of the fact that you are simply wrong on this point; coal power plants do release thousands of tons of mild radioactive waste that is the same or worse that gets anti-nuke environmentalists all upset, and it puts it into the air. Mild alpha emitters like those natural isotopes do not represent a problem in the dirt -- the alpha particles are stopped by the dirt, your shoes, your clothes, the air, your dead skin, etc. Breathing them in particulate form is not safe. In a nuclear power plant, even without reprocessing, which would eliminate most nuclear waste and use it as fuel, the waste is still contained in the reactor chamber until it is removed.
Re: the leukemia sufferers around the Irish sea, your last argument was that radioactive material could not possibly be the cause of cancer around coal plants, and leukemia is a cancer. You can't have your cake and eat it too.
For an "obsessive maths geek", you should know better than to throw around figures like 90% efficiency. Assuming a cold sink temperature of 25 C (298 K) for said hydrogen engine, the combustion temperature would need to be 2980 K (carnot eff. = 1 - Tl/Th), or 4900 degrees Fahrenheit, assuming your hydrogen engine was a Carnot heat engine, which it's not. I didn't say a thing about using fossil fuels; I agree that using non-carbon neutral sources like fossil fuels is idiotic for a variety of reasons. I was simply supplying one example of the many possible carbon neutral fuels that make far more sense from a practical standpoint (as opposed to the standpoint of a stoned hippie), such as plant-matter derived alcohols, and biodiesel.
You're simply misinformed. In any event, thorium is present is higher concentrations in coal than is uranium. Filters do not catch it. Estimates are that 10,000 times as much radioactive material is released from a coal power plant than from a nuclear power plant. This is borne out in cancer statistics in the areas around coal plants, etc. In fact, the uranium released from a coal plant would produce more energy when burned in a fission reactor than the entire mass of the coal it came from in the first place. See this article.
Simple sanity check: How's a coal powerplant smokestack filter going to catch thorium oxide if it's not stopping carbon dioxide? The size of the molecules is not significantly different. Additionally, if it is catching those many tons of thorium and uranium, where are all the nuclear waste disposal people dealing with the spent smokestack filters that by onw are surely clogged with tons of radioactive metal compounds?
Don't kid yourself. Nuclear is clean and safe.
Hydrogen power, on the other hand, is idiotic. Releasing CO2 into the atmosphere is fine as long as it comes from a carbon neutral source. If you were producing methanol from plants and burning that in cars (not farfetched, seeing as several racing leagues use it), it would not matter that CO2 was released, because each molecule of CO2 would be one that was taken out of the atmosphere a few months prior to grow the plant feedstock in the first place. The lack of a carbon in H2 is not an advantage. The very real disadvantages of H2, such as difficult of containment and poor energy/volume, still stand.
Frankly, I'd rather get killed in a terrorist attack than have the entire country turned into a fascist nanny state.
No. 62 miles is the completely arbitrary definition of "space", but a space elevator that ended at that altitude would simply fall back down. By necessity, the center of mass (radially from the surface of the Earth) must be at or near geosynchronous orbit, so it naturally remains centered over its ground anchor. Geosynchronous orbit is at 22,241 miles above sea level. So, by gradually tapering the cable and extending it past GEO, the center of mass ends up there. Alternatively, you can have a large mass like a captured asteroid or something as an anchor just on the far side of GEO, although you should also have some counterweights you can move around on the cable to keep the center of mass in the right place as a load moves up from the surface. Additionally, keeping the center of mass just a little bit further out that necessary ensures that the space elevator will have just enough tension to keep it taut, giving the climbers an easier job.
Do you have a job?
I'm amazed you managed to post without using the phrase "anarchocapitalist". Congratulations.
Getting venture capital is not "winning". It is a very expensive form of financing, in terms of dilution, and should be exercised as a last resort. The effective interest rate of venture capital (if it were to be compared to a loan), in terms of the return expected by VC, is around 20-25%.
Actually, no. Current ceramic rifle plate technology for human-worn body armor does not shatter when hit with a single round. See here.
Space probe RTGs (radioisotope thermoelectric generators) are just that..thermoelectric. Not betavoltaic. Despite the fact that Pu-238 undergoes beta decay, the beta particles are simply used to generate heat, not directly converted to electric current. Typically you have 72 little pellets of Pu-oxide each wrapped in Indium, and these maintain a steady state 700 C temperature difference to ambient, allowing even inefficient Peltier junctions to convert the heat differential into a steady 400 Watts or so (although due to the 78 year half life, Voyager/Pioneer are now well below 100 Watts, I believe).
You are correct that micropower applications such as pacemakers use betavoltaic cells, however.
You can always get a high paying job in the private sector and get a part time position as adjunct faculty at a local university. Many of the adjunct faculty in my undergrad were in that situation, and they were among the best teachers in the department (electrical engineering).
Additionally, they were using commercially pure (CP) titanium; that is to say, unalloyed. This made it possible to form it into the shapes required, but it's extraordinarily weak, normally only used for decoration or for applications that need a corrosion resistant material (racks for aluminum anodization are made of CP titanium). Alloyed aluminum of pretty much any type is going to be cheaper, easier to form/machine, and much stronger. And with a decent anodization, it will be far more scratch resistant.