Big corporations are paying schools MILLIONS to gut their curricula. The fewer competent engineers the US graduates, the more justified huge companies can be in offshoring jobs and on-shoring foreign H1B and L1 visas and 1/4 the cost.
Starting Jan 1 2012, I am sure we will see the market flooded with 101 watt incandescent bulbs that fall into the 1000-1500 lumen range and only have to emit 22 lumens per watt. Typical 100W bulbs today are in that range.
hahahahahah! I haven't seen that movie in AGES!!! I just had to add it to my Netflix queue. Thanks for reminding me of such a brilliant 80's nerd flick:-)
I am a pilot, and I have had my cockpit illuminated by ground-based lasers before, and it is NOT a fun thing. People think it's goddamn funny at the time, but it really isn't at all. If you blind a pilot, resulting in a fatal crash, there is nothing funny about it.
I am well aware of RACES and ARES, however, what I was asking was if FEMA had an official plan for utilizing these organizations in the event of a disaster. I've been an amateur for 20 years and have never been made aware that the federal government has Ham Radio on the radar screen.
For example, when 9/11 happened, Hams (including myself - after driving to New Jersey and practically swimming across the river myself to get into Manhattan) were initially turned away from field offices while at the same time agencies and rescuers had no communication via cell or ground-link services. The initial responders at the scene; local, state, and federal; had barely a clue what amateur radio was for several days after the incident.
This tells me that nobody has an official plan for utilizing amateur radio services in the event of an emergency, which to me is asinine.
I always like it when Ham Radio Opers get the credit they deserve. When Hurricane Bonnie rolled through the south east, I was working with the guys at W4AQL monitoring emergency comms. I also gave an interview for local TV about how Ham Radio operators are a crucial part of any disaster plan.
I have never heard of it, and I realize it may be a false assumption that one does not exist, but I am wondering if FEMA has an official process for calling up Ham Radio Opers to help as part of their disaster plan....
Well, the idea of encrypting RAM would be obvious to the person skilled in the state of the art, and therefore on its face not patentable. However, there are invariable many novel ways to solve obvious problems that would be patentable. Whether or not I could obtain a patent on the method and apparatus would depend upon the novelty of said method and apparatus.
You can't have perfect secrecy unless your RAM contents are also encrypted. Wasn't there some case recently where the RAM contents of some server were subpoenaed in a court case? If your RAM is unencrypted, then your IM conversation is stored in plain text SOMEWHERE, even if it is encrypted on the network stack. Of course, having encrypted RAM would be a HUMONGOUS performance hit, but it could be done. Hmmm..
They can. see my other post in this thread. Mode S transponders are GPS linked and transmit an aircraft's exact location digitally on top of their squawk. Any Mode-S receiver can receive this signal and know the tail number of the plane and its exact location. The thing is that the transponders can only transmit so far, so it helps to have receivers everywhere.
Scoring has been frowned upon for years by child psychologists, because it allows kids to differentiate themselves on the basis of competition. This leads lower scoring kids to have feelings of inferiority, lack of accomplishment, and inadequacy.
I know it sounds ludicrous, but this is why some schools in my area no longer keep score in their sports programs, and kids are disciplined if they keep score on their own or talk about it during game play.
It sounds like this system is just picking up the Mode-S transponders in modern planes, and relaying that information to ATC. Aircraft equipped with modern GPS, even general aviation aircraft, also pick up these Mode-S transmissions and plot other aircraft on the GPS display.
Right now, only Mode-C is required by law, and even then only within 30 nautical miles of a Class B airport. Mode C just transmits your altitude information and it is up to radar to determine your x-y position. Mode S is much more accurate because GPS is accurate to feet, where radar is only accurate to hundreds (or maybe thousands) of feet in x-y, and not accurate at all for altitude (which is why we have Mode C).
I can't imagine it'll actually cost 20 Billion to retrofit cell towers with Mode S receivers and internet relays. A land-based Mode S receiver is probably $100, and they can ride the data on AT&T's EDGE or 3G network for next to free. This seems like a cash grab to me.
THANK YOU. Changing the physical location of a system board within the chassis doesn't do anything to change the system. FFS, people need to get a freakin' grip.
Man, if we didn't do DST here in Philly, the sun would come up at 4 in the morning during the summer. I wouldn't mind living in AZ, though. They don't do DST and still have a reasonable sunrise in the summer. Better climate, too. I hate the cold, and personally I'm all for global warming. A few pesky cities might go under, but the desert southwest will become an oasis.:-)
Automobiles use CAN bus, which is differential. However, it is also possible to eliminate common mode range by isolating the transceiver I/O using a transformer. This is how Ethernet works, and I imagine that other differential industrial buses such as CAN and Profibus could be isolated the same way. Well, I know they can, but whether they will still conform to signal quality specifications is what I don't know.
First, 1 Watt is the movement of energy at the rate of 1 Joule per second, and need not be electrically related at all. A watt is energy per unit time.
Second, power factor is irrelevant to cooling calculations because reactive power does not generate heat, even though it does generate imaginary current in the generating device. This is why power companies bill industrial power based on VAH and not on KWH.
Generators are rated for the magnitude of their output current, not just the real component of it. This is also why power companies try their best to load all three phases equally - because in that case the net instantaneous current out of the generator is zero and the physical forces on the windings and stators is constant and uniform.
Also, most server-class power supplies have power factor correction which adjusts the power factor to 1 by adding shunt capacitance to the input of the supply.
The major point that most people seem to be missing in this dialogue is that a 500W PC power supply does not draw 500W from the wall by simply being plugged in. A PC power supply will deliver only what power is needed by the devices connected to it. For example, my server at home is an X2-4800 with 8 hard disks in it, 4 cooling fans, and a 600W power supply. The total power draw on the server box, two UPS units, the 24 port ethernet switch, the router, the cable modem, and the overhead light, is 262W at CPU idle. Just because it has redundant 500W supplies doesn't mean it's going to draw 1000W just sitting there. I have not measured the power with both CPUs at 100%.
The heat of vaporization of Liquid N2 is 199kJ/kg, meaning it takes 200,000 Joules to evaporate 1 kg of liquid nitrogen. If a cabinet is dissipating 2kW of power (which is 2kJ/s), it will take just 100 seconds to evaporate 1kg of liquid N2. That's 36kg/h of N2, per cabinet. If a datacenter has 100 cabinets, that's 3600kg of liquid N2 per hour to keep it cool. At 0.808 kg/m^3, that translates to about 4455 cubic meters of liquid nitrogen. That's a volume 20 meters on a side and 11 meters tall, which is about the size of a small apartment building.
Whatever function is triggered is being disabled by the removal of the SMELL capacity, not the FLEE capacity. That part of the mouse's brain that is responsible for interpreting the smell of a predator is probably still working fine, but is just not being stimulated because they have disabled the SMELL part.
First of all, I don't get to deduct this as a charitable contribution, the company does. Second, I doubt the cost is actually $180 if you're standing on Chinese soil. This just doesn't pass the smell test. Who is to know if those second laptops are ever actually donated to children, or manufactured at all? Who is responsible for accounting for laptops supposedly donated to poor kids? Are we supposed to just take them at their word? Laptops that don't enter US airspace or go through US customs may as well not exist.
"Sure, we delivered 100 laptops to poor kids in that little village in the jungle. Sure, they have no lights, no phone, and no motor cars, not a single luxury, in fact. Where is the village, you ask? Hell, I don't know, we just stumbled upon them one day, so good luck finding them."
And we wonder why it has become necessary to offshore so much technology work - it has become more important to protect "Baby got Back" from piracy than to educate our best and brightest. This is just a roundabout way to completely shut down schools that do not comply. It's really a totalitarian move on the part of the government, and sadly this is the direction the US has been moving in for a number of years.
Correct, and more often than not that budget ceiling is completely unrealistic, and/or the contractor/architects have massive budget overruns, or for whatever reason, things are sacrificed. This is usually because architects and engineers are horrible at estimation and usually think things can be done for half of what they actually cost.
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Big corporations are paying schools MILLIONS to gut their curricula. The fewer competent engineers the US graduates, the more justified huge companies can be in offshoring jobs and on-shoring foreign H1B and L1 visas and 1/4 the cost.
Which company did you intern for? The one in Phoenix?
Starting Jan 1 2012, I am sure we will see the market flooded with 101 watt incandescent bulbs that fall into the 1000-1500 lumen range and only have to emit 22 lumens per watt. Typical 100W bulbs today are in that range.
hahahahahah! I haven't seen that movie in AGES!!! I just had to add it to my Netflix queue. Thanks for reminding me of such a brilliant 80's nerd flick :-)
I am a pilot, and I have had my cockpit illuminated by ground-based lasers before, and it is NOT a fun thing. People think it's goddamn funny at the time, but it really isn't at all. If you blind a pilot, resulting in a fatal crash, there is nothing funny about it.
I am well aware of RACES and ARES, however, what I was asking was if FEMA had an official plan for utilizing these organizations in the event of a disaster. I've been an amateur for 20 years and have never been made aware that the federal government has Ham Radio on the radar screen.
For example, when 9/11 happened, Hams (including myself - after driving to New Jersey and practically swimming across the river myself to get into Manhattan) were initially turned away from field offices while at the same time agencies and rescuers had no communication via cell or ground-link services. The initial responders at the scene; local, state, and federal; had barely a clue what amateur radio was for several days after the incident.
This tells me that nobody has an official plan for utilizing amateur radio services in the event of an emergency, which to me is asinine.
I always like it when Ham Radio Opers get the credit they deserve. When Hurricane Bonnie rolled through the south east, I was working with the guys at W4AQL monitoring emergency comms. I also gave an interview for local TV about how Ham Radio operators are a crucial part of any disaster plan.
I have never heard of it, and I realize it may be a false assumption that one does not exist, but I am wondering if FEMA has an official process for calling up Ham Radio Opers to help as part of their disaster plan....
73
N2JBE
flightaware.com
Well, the idea of encrypting RAM would be obvious to the person skilled in the state of the art, and therefore on its face not patentable. However, there are invariable many novel ways to solve obvious problems that would be patentable. Whether or not I could obtain a patent on the method and apparatus would depend upon the novelty of said method and apparatus.
You can't have perfect secrecy unless your RAM contents are also encrypted. Wasn't there some case recently where the RAM contents of some server were subpoenaed in a court case? If your RAM is unencrypted, then your IM conversation is stored in plain text SOMEWHERE, even if it is encrypted on the network stack. Of course, having encrypted RAM would be a HUMONGOUS performance hit, but it could be done. Hmmm..
Off to the patent office I go..
They can. see my other post in this thread. Mode S transponders are GPS linked and transmit an aircraft's exact location digitally on top of their squawk. Any Mode-S receiver can receive this signal and know the tail number of the plane and its exact location. The thing is that the transponders can only transmit so far, so it helps to have receivers everywhere.
Scoring has been frowned upon for years by child psychologists, because it allows kids to differentiate themselves on the basis of competition. This leads lower scoring kids to have feelings of inferiority, lack of accomplishment, and inadequacy.
I know it sounds ludicrous, but this is why some schools in my area no longer keep score in their sports programs, and kids are disciplined if they keep score on their own or talk about it during game play.
It sounds like this system is just picking up the Mode-S transponders in modern planes, and relaying that information to ATC. Aircraft equipped with modern GPS, even general aviation aircraft, also pick up these Mode-S transmissions and plot other aircraft on the GPS display.
Right now, only Mode-C is required by law, and even then only within 30 nautical miles of a Class B airport. Mode C just transmits your altitude information and it is up to radar to determine your x-y position. Mode S is much more accurate because GPS is accurate to feet, where radar is only accurate to hundreds (or maybe thousands) of feet in x-y, and not accurate at all for altitude (which is why we have Mode C).
I can't imagine it'll actually cost 20 Billion to retrofit cell towers with Mode S receivers and internet relays. A land-based Mode S receiver is probably $100, and they can ride the data on AT&T's EDGE or 3G network for next to free. This seems like a cash grab to me.
Salt is nice, but pepper is better.
THANK YOU. Changing the physical location of a system board within the chassis doesn't do anything to change the system. FFS, people need to get a freakin' grip.
Man, if we didn't do DST here in Philly, the sun would come up at 4 in the morning during the summer. I wouldn't mind living in AZ, though. They don't do DST and still have a reasonable sunrise in the summer. Better climate, too. I hate the cold, and personally I'm all for global warming. A few pesky cities might go under, but the desert southwest will become an oasis. :-)
Dammit...
Automobiles use CAN bus, which is differential. However, it is also possible to eliminate common mode range by isolating the transceiver I/O using a transformer. This is how Ethernet works, and I imagine that other differential industrial buses such as CAN and Profibus could be isolated the same way. Well, I know they can, but whether they will still conform to signal quality specifications is what I don't know.
Automobiles use CANbus, which is differential.
First, 1 Watt is the movement of energy at the rate of 1 Joule per second, and need not be electrically related at all. A watt is energy per unit time.
Second, power factor is irrelevant to cooling calculations because reactive power does not generate heat, even though it does generate imaginary current in the generating device. This is why power companies bill industrial power based on VAH and not on KWH.
Generators are rated for the magnitude of their output current, not just the real component of it. This is also why power companies try their best to load all three phases equally - because in that case the net instantaneous current out of the generator is zero and the physical forces on the windings and stators is constant and uniform.
Also, most server-class power supplies have power factor correction which adjusts the power factor to 1 by adding shunt capacitance to the input of the supply.
The major point that most people seem to be missing in this dialogue is that a 500W PC power supply does not draw 500W from the wall by simply being plugged in. A PC power supply will deliver only what power is needed by the devices connected to it. For example, my server at home is an X2-4800 with 8 hard disks in it, 4 cooling fans, and a 600W power supply. The total power draw on the server box, two UPS units, the 24 port ethernet switch, the router, the cable modem, and the overhead light, is 262W at CPU idle. Just because it has redundant 500W supplies doesn't mean it's going to draw 1000W just sitting there. I have not measured the power with both CPUs at 100%.
I would argue against this as viable.
The heat of vaporization of Liquid N2 is 199kJ/kg, meaning it takes 200,000 Joules to evaporate 1 kg of liquid nitrogen. If a cabinet is dissipating 2kW of power (which is 2kJ/s), it will take just 100 seconds to evaporate 1kg of liquid N2. That's 36kg/h of N2, per cabinet. If a datacenter has 100 cabinets, that's 3600kg of liquid N2 per hour to keep it cool. At 0.808 kg/m^3, that translates to about 4455 cubic meters of liquid nitrogen. That's a volume 20 meters on a side and 11 meters tall, which is about the size of a small apartment building.
Not very practical, if you ask me.
Whatever function is triggered is being disabled by the removal of the SMELL capacity, not the FLEE capacity. That part of the mouse's brain that is responsible for interpreting the smell of a predator is probably still working fine, but is just not being stimulated because they have disabled the SMELL part.
I wonder if Windows for Warships had anything to do with the breach of our naval exercise by the Chinese submarine...
First of all, I don't get to deduct this as a charitable contribution, the company does. Second, I doubt the cost is actually $180 if you're standing on Chinese soil. This just doesn't pass the smell test. Who is to know if those second laptops are ever actually donated to children, or manufactured at all? Who is responsible for accounting for laptops supposedly donated to poor kids? Are we supposed to just take them at their word? Laptops that don't enter US airspace or go through US customs may as well not exist.
"Sure, we delivered 100 laptops to poor kids in that little village in the jungle. Sure, they have no lights, no phone, and no motor cars, not a single luxury, in fact. Where is the village, you ask? Hell, I don't know, we just stumbled upon them one day, so good luck finding them."
Smells like a tax scam, to me...
And we wonder why it has become necessary to offshore so much technology work - it has become more important to protect "Baby got Back" from piracy than to educate our best and brightest. This is just a roundabout way to completely shut down schools that do not comply. It's really a totalitarian move on the part of the government, and sadly this is the direction the US has been moving in for a number of years.
Correct, and more often than not that budget ceiling is completely unrealistic, and/or the contractor/architects have massive budget overruns, or for whatever reason, things are sacrificed. This is usually because architects and engineers are horrible at estimation and usually think things can be done for half of what they actually cost.