You have no rights when you try to enter another country. Customs does not need probable cause or a reasonable suspicion to search your person and effects. The immigration officer can refuse you entry for any or no reason. That isn't just the United States, that's every country in the world.
The USA has a large, and politically powerful, commercial broadcasting industry. They are violently opposed to any system that would introduce competition and devalue their broadcasting "properties". It has nothing to do with technical quality or improved service to the public.
Maybe you have better stations in your area, or your threshold of pain is higher, but the sound quality of the typical FM station drives me nuts. I'm not a "golden ears" type, listening for subtle nuances in the audio. What I notice are high levels of distortion and multi-band compressors in the transmitter chain that are "set to 11", 100% or higher modulation in every band, all of the time. I've heard much better sound quality on AM radio, which can sound pretty good if the engineering and production staff want to broadcast a clean signal.
The alternative was a pure digital system like DAB in Europe. That was not acceptable to the existing radio licensees, who might actually be forced to compete for the licenses in a new digital service.
A lot is dependent on the design of the codec. The Space Shuttle uses a delta modulation system (Modified Abate Adaptive Delta Modulation) that was designed to degrade gracefully on high BER communication links.
I don't think anyone needs more speed than the best 32 bit CPUs provide today.
You are very wrong. I'd like to do RF digital signal processing on my PC. Current CPUs are hopelessly underpowered for many of the DSP applications that would be useful to me.
The one that I've noticed is attitudes towards children and alcohol.
My family is from Wisconsin. If we had wine with a meal, I would be given a glass. I can remember attending many picnics with family and relatives in local parks. There was always a keg or two of beer, along with the sausages, hamburgers and other food. Many of the kids would drink a half-cup or cup of beer, although most preferred soda.
What would happen if I tried that today, in another part of the United States? Let's see.
Alcohol in a public park.
Drinking in public.
Giving alcohol to minors.
I'd probably end up in jail and see the kids put in foster care. I've also noticed the large number of "public service" ads on television that portray alcohol consumption, especially by children, as stupid and evil.
Building a white box computer from generic parts is not computer engineering. The world does not need more generic boxes assembled by trained monkeys in someone's garage. There are plenty of OEMs who can produce thousands of systems per day, properly tested, documented and packaged, for less money.
If you want to start a business, identify a real problem or need, and develop a product or service to address it. If you want to build computers, don't try to copy Intel and Microsoft. Design a computer that does something new and unique, or does it significantly better than existing systems.
Fission reactors are considerably more complex than RTGs. A RTG directly converts decay heat from an isotope with a relatively short half-life to electricity. There are no moving parts, heat transfer fluids, or complicated cooling systems.
A typical fission reactor uses enriched uranium, which is mostly u238 with about 3% u235. Pu239 is both created and "burnt" during the operation of a reactor fueled with enriched uranium. A reactor could be fueled with weapons grade pu239 if there was a good reason to do so, such as disposing of excess stockpiles of pu239 pits from obsolete nuclear weapons.
Nuclear power (radioisotope thermoelectric generators) is expensive. The fuel, pu238, makes platinum look cheap.
Why spend the money, and give the lunatic fringe of the environmental movement something to protest about, if it isn't really necessary?
I think it was published in the pre-ISBN era. As far as I know, the only place it can be found is in used book stores, like many other Bell System publications.
At least for the moment, a medium that was hailed as the ultimate venue for education and self-improvement is mired in the age-old conflict between the salesman who wants his foot in the door, no matter what, and the angry person who wants nothing more than to be left alone.
Both problems, the spammer and the salesman, can be solved with the use of a good 12-gauge shotgun.
Trespassers will be shot. Survivors will be shot again.
GPS is a receive only system. The GPS satellites should be the only things transmitting on the L1 and L2 frequencies. There is no reason for an aircraft to transmit on those frequencies.
Jamming is a possible problem. Military GPS receivers have anti-jam features that are not available on civilian GPS receivers. The receiver needs a crypto module and a current set of crypto keys to have full functionality.
Spoofing would be more dangerous. A clever adversary could simulate a number of GPS satellites and broadcast false navigation information.
What's needed isn't video from the orbiter, but telemetry from the probe via an RF link. That will provide far more information than a video feed.
Launch vehicles and satellites have sophisticated telemetry systems that collect a wide variety of information from on-board sensors and systems. This information is often crucial in diagnosing faults and failures, since physical evidence is usually unavailable.
The problem is that there has to be a satellite tracking ground station, or special satellite with similar capabilities, with a line-of-sight to the probe to receive and record the telemetry for later analysis.
Check with your bank on their policies for overdrawn accounts before you rely on separate accounts. When a check was presented that was far in excess of my checking account balance (due to MICR data entry error), my ex-bank just took the money from another account that had sufficient funds to cover the check. I didn't find out about it until I got my monthly statement. As far as I can tell, no human was involved in making the decision. The bank runs on autopilot for routine decisions. I eventually got all of my money back and the service charges refunded, but it was a pain in the butt.
The cesium atomic clocks use a fundamental property of the cesium atom, the difference in energy between two states of the cesium atom. This is the same principle of physics that produces emission lines in a spectrogram when an element is heated. When an electron jumps from one state to another, it emits or absorbs a photon at a specific and fixed frequency. The atomic clock measures this frequency and uses it to keep an oscillator synchronized with the cesium atoms.
If you accept that every cesium atom is identical, no matter where you are in the universe, or whether the atoms are 1 year old or 1 trillion years old, then the properties of the atoms are also constant and identical. They don't slow down with age or wear out.
Heal itself? That implies that there is something natural about the 24-hour day. The Earth's rotation rate has been decreasing for billions of years. An Earth day was approximately 18 hours in duration 900 million years ago.
The original model didn't have a vent. Explosive gases would accumulate until a spark caused an explosion. They added the vent after a number of people were seriously injured.
They can also go into thermal runaway. I've seen pictures of charred helicopters after the NiCad batteries destroyed themselves due to excessive temperature and current drain.
I'd look in old microcomputer magazines (Dr. Dobbs, Kilobaud) from the 1970s for articles on recording data to cassette tapes. Many of these articles included schematics and source code in assembly language. The problem with tape is that schemes that work on narrowband audio channels, like AFSK (audio frequency shift keying), are often unusable because of poor speed regulation, wow and flutter on analog tape transports. If you can scrounge up a manual for the original Apple II, it includes an assembly listing of the ROM, which include cassette I/O outines.
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Do any modern chips support per-process cache reservation? That would alleviate some of the problems reported in the article.
You have no rights when you try to enter another country. Customs does not need probable cause or a reasonable suspicion to search your person and effects. The immigration officer can refuse you entry for any or no reason. That isn't just the United States, that's every country in the world.
The USA has a large, and politically powerful, commercial broadcasting industry. They are violently opposed to any system that would introduce competition and devalue their broadcasting "properties". It has nothing to do with technical quality or improved service to the public.
Maybe you have better stations in your area, or your threshold of pain is higher, but the sound quality of the typical FM station drives me nuts. I'm not a "golden ears" type, listening for subtle nuances in the audio. What I notice are high levels of distortion and multi-band compressors in the transmitter chain that are "set to 11", 100% or higher modulation in every band, all of the time. I've heard much better sound quality on AM radio, which can sound pretty good if the engineering and production staff want to broadcast a clean signal.
The alternative was a pure digital system like DAB in Europe. That was not acceptable to the existing radio licensees, who might actually be forced to compete for the licenses in a new digital service.
A lot is dependent on the design of the codec. The Space Shuttle uses a delta modulation system (Modified Abate Adaptive Delta Modulation) that was designed to degrade gracefully on high BER communication links.
Integer - 2400M MACs/sec
FP - 550M MACs/sec
Cost - $300-600+ for 1k Unit quantity
Intel 2GHz P4
Integer - 4000M+ MACs/sec
FP - 2000M MACs/sec
Cost - $158 for 2 GHz, $550 for 2.8 GHz (today)
(Source: DCC Sunday Seminar 2002 Software Defined Radio )
You are very wrong. I'd like to do RF digital signal processing on my PC. Current CPUs are hopelessly underpowered for many of the DSP applications that would be useful to me.
For an example, see SNAP-27.
My family is from Wisconsin. If we had wine with a meal, I would be given a glass. I can remember attending many picnics with family and relatives in local parks. There was always a keg or two of beer, along with the sausages, hamburgers and other food. Many of the kids would drink a half-cup or cup of beer, although most preferred soda.
What would happen if I tried that today, in another part of the United States? Let's see.
- Alcohol in a public park.
- Drinking in public.
- Giving alcohol to minors.
I'd probably end up in jail and see the kids put in foster care. I've also noticed the large number of "public service" ads on television that portray alcohol consumption, especially by children, as stupid and evil.If you want to start a business, identify a real problem or need, and develop a product or service to address it. If you want to build computers, don't try to copy Intel and Microsoft. Design a computer that does something new and unique, or does it significantly better than existing systems.
Why don't they ask Customs to seize the unlicensed DVD players? They have the authority to enforce copyrights, trademarks and patents.
A typical fission reactor uses enriched uranium, which is mostly u238 with about 3% u235. Pu239 is both created and "burnt" during the operation of a reactor fueled with enriched uranium. A reactor could be fueled with weapons grade pu239 if there was a good reason to do so, such as disposing of excess stockpiles of pu239 pits from obsolete nuclear weapons.
Nuclear power (radioisotope thermoelectric generators) is expensive. The fuel, pu238, makes platinum look cheap. Why spend the money, and give the lunatic fringe of the environmental movement something to protest about, if it isn't really necessary?
I think it was published in the pre-ISBN era. As far as I know, the only place it can be found is in used book stores, like many other Bell System publications.
Both problems, the spammer and the salesman, can be solved with the use of a good 12-gauge shotgun.
Trespassers will be shot. Survivors will be shot again.
Jamming is a possible problem. Military GPS receivers have anti-jam features that are not available on civilian GPS receivers. The receiver needs a crypto module and a current set of crypto keys to have full functionality.
Spoofing would be more dangerous. A clever adversary could simulate a number of GPS satellites and broadcast false navigation information.
Launch vehicles and satellites have sophisticated telemetry systems that collect a wide variety of information from on-board sensors and systems. This information is often crucial in diagnosing faults and failures, since physical evidence is usually unavailable.
The problem is that there has to be a satellite tracking ground station, or special satellite with similar capabilities, with a line-of-sight to the probe to receive and record the telemetry for later analysis.
Check with your bank on their policies for overdrawn accounts before you rely on separate accounts. When a check was presented that was far in excess of my checking account balance (due to MICR data entry error), my ex-bank just took the money from another account that had sufficient funds to cover the check. I didn't find out about it until I got my monthly statement. As far as I can tell, no human was involved in making the decision. The bank runs on autopilot for routine decisions. I eventually got all of my money back and the service charges refunded, but it was a pain in the butt.
See Variations of LOD and primary geodynamical parameters throughout the Earth's history (Abstract, PDF file) VARGA, P.; DENIS, C., EGS XXVII General Assembly, Nice, France, April 2002.
If you accept that every cesium atom is identical, no matter where you are in the universe, or whether the atoms are 1 year old or 1 trillion years old, then the properties of the atoms are also constant and identical. They don't slow down with age or wear out.
Heal itself? That implies that there is something natural about the 24-hour day. The Earth's rotation rate has been decreasing for billions of years. An Earth day was approximately 18 hours in duration 900 million years ago.
The original model didn't have a vent. Explosive gases would accumulate until a spark caused an explosion. They added the vent after a number of people were seriously injured.
They can also go into thermal runaway. I've seen pictures of charred helicopters after the NiCad batteries destroyed themselves due to excessive temperature and current drain.
I'd look in old microcomputer magazines (Dr. Dobbs, Kilobaud) from the 1970s for articles on recording data to cassette tapes. Many of these articles included schematics and source code in assembly language. The problem with tape is that schemes that work on narrowband audio channels, like AFSK (audio frequency shift keying), are often unusable because of poor speed regulation, wow and flutter on analog tape transports. If you can scrounge up a manual for the original Apple II, it includes an assembly listing of the ROM, which include cassette I/O outines.