How would you build an Egyptian tomb with today's knowledge? There's still no shortage of thieves who would be willing to break in and steal any valuable items. I'd start with dumping a few kilos of weapons grade anthrax spores on the floor of the burial chamber.
User training. Teaching new users how to use a mouse and the basic operations of a GUI. It may seem archaic now, but think back when everyone was switching from DOS/WordPerfect/Lotus-123 to Windows.
What's the difference between 9.0 and 9.0c? I recently upgraded several PCs with some inexpensive ATI Radeon 9550 cards, which are supposed to support DirectX 9.
GPS satellites are in circular orbits with a period of 12 hours, so they are in continuous motion with respect to an observer on the surface of the Earth.
...the Common Language Infrastructure is based on a virtual machine that may be ported to any architecture...
"May be ported", not "has been ported". I used to write software for the UCSD p-System, which used a virtual machine. They made a genuine effort to port the p-System to many different architectures. You could run it on an LSI-11, Apple ][, Motorola 68000 or IBM PC. How many system has the complete.NET framework, including compilers and libraries, been ported to?
Gee, what if I have to write software for something other than an Intel-based PC? Such things do exist.
I'd second the notion that, whenever possible, software should be written in languages that are based on international standards. You will get screwed if you rely on a single vendor.
That isn't unreasonable. I've seen alleged stratum 2/3 servers that were in error by 100 ms or more. Not sure how they broke it, but they did. Usually it's better than 50 ms, but I wouldn't bet my life on it.
With AM, 50% of the power is in the carrier and 50% is in the sidebands. The carrier power is constant. The sideband power depends on the modulation index.
That's the most pathetic excuse for an argument that I've ever read. Anyone who criticizes our shiny new proposals is a corporate-funded astroturfer? Let me introduce another possibility, you're an idiot.
From the article, the backup command destruct system for the shuttle was malfunctioning. Normally this would result in the range being declared red, unable to proceed with a launch due to lack of a working backup system. For the range to be declared green, able to proceed with a launch, there is a long checklist that says what equipment must be working properly, allowable weather conditions, etc. The article says that some AF general waived the requirement for a working backup command destruct system so that the range could be declared green and the launch could proceed. Whether he had the authority to do that, and whether it was a good decision, are probably being questioned.
The purpose of range safety is not to protect the astronauts or the shuttle. It's to protect the public from a launch vehicle that has malfunctioned. If a launch vehicle is doing something that could result in a hazard to the public, like heading for downtown Cocoa Beach, the range safety officer terminates the flight by using the command destruct system. Contrary to popular belief, the destruct system doesn't "blow up" the launch vehicle. It is designed to terminate powered flight. This is often done by detonating linear shaped charges that are attached to solid rocket motor casings and liquid fuel tanks. The idea is that the launch vehicle, or its pieces, will then follow a ballistic trajectory and impact in a safe area. The range safety officer has computer systems that continually show the predicted impact point of the launch vehicle if all engines failed or the flight was terminated.
It works. Your average television set radiates a fair quantity of RF energy. The Germans and Russians used similar technology to find people who listened to forbidden foreign radio stations.
Scientists have been actively studying "space plasma" for almost 50 years, starting with the International Geophysical Year in 1957. It involves the Sun, its corona, the Earth's magnetic field, and the upper parts of the Earth's atmosphere. There are many things that are still not understood. The effects of the solar wind on spacecraft is a substantial field of study by itself. Spacecraft can be damaged or destroyed by static electrical charges and arcing caused by charged solar particles.
I don't think my system (Comcast) works that way. You can use the remote to pause, restart at beginning, fast forward, rewind, etc., just like a DVR. Plus, it has a fairly large library of shows and movies.
No. Digital video and Internet packets use different channels. They don't compete for bandwidth. If they have 80 channels, they may use 65 for digital video, 5 for video-on-demand, and 10 for data.
What if they install a 100 Mbps link for video/phone/internet and use up to 100% of the bandwidth for their own services (video/phone)? The Internet gets the dregs after the priority services take their bite. It would be easy to do with a QoS scheme that always gave priority to their own data. Verizon gets reserved seating and everyone else flies space available.
No. The cable bandwidth is still divided into 6 MHz wide channels. Each channel can carry one analog television signal or a multiplexed group of digital television signals. The digital cable set-top box has a map that associates user channel numbers with the cable channel numbers. You might select channel 250 on your remote control, and the set-top box knows that it can find it on channel 17 (digital mode), subchannel 3. If you had enough money and equipment, you could watch all of the channels at the same time.
The one case that is handled differently is video-on-demand. That requires the temporary use of a dedicated subchannel for a single subscriber.
Your cable modem downlink works in a similar way. The cable modem tunes to a 6 MHz digital channel that contains multiplexed packets for a group of cable modem subscribers. The cable modem forwards any packets addressed to you and ignores the rest. The uplink is handled differently. Each cable modem is assigned a unique time slot on a shared RF uplink channel. When it has data to send, the cable modem waits for its time slot and then transmits packets until its time slot has ended.
What does speaker impedance have to do with efficiency (volume)? High-efficiency speakers can be designed for low or high impedances. The same is true of low-efficiency speakers.
The reason to fight a war is that the alternatives are worse. There is still plenty of evil in the world, North Korea for example. Kim Jong Il is like Stalin, without the redeeming qualities.
ISDN was a worthwhile technology, putting a low-latency multiplexed digital communications link on existing copper wiring. The problem, at least in the USA, was how it was marketed, priced, and promoted by the telephone companies. The telephone companies wanted to push centrex and the "intelligent" circuit-switched network. They had no interest in selling cheap packet-switched data links to individuals and small businesses. They hate the concept of the dumb network. There's no great profit to be made running a dumb network.
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How would you build an Egyptian tomb with today's knowledge? There's still no shortage of thieves who would be willing to break in and steal any valuable items. I'd start with dumping a few kilos of weapons grade anthrax spores on the floor of the burial chamber.
User training. Teaching new users how to use a mouse and the basic operations of a GUI. It may seem archaic now, but think back when everyone was switching from DOS/WordPerfect/Lotus-123 to Windows.
What's the difference between 9.0 and 9.0c? I recently upgraded several PCs with some inexpensive ATI Radeon 9550 cards, which are supposed to support DirectX 9.
GPS satellites are in circular orbits with a period of 12 hours, so they are in continuous motion with respect to an observer on the surface of the Earth.
"May be ported", not "has been ported". I used to write software for the UCSD p-System, which used a virtual machine. They made a genuine effort to port the p-System to many different architectures. You could run it on an LSI-11, Apple ][, Motorola 68000 or IBM PC. How many system has the complete .NET framework, including compilers and libraries, been ported to?
Ada is still widely used for critical applications, like avionics and weapons systems. The mandate may be gone, but the language is far from dead.
I'd second the notion that, whenever possible, software should be written in languages that are based on international standards. You will get screwed if you rely on a single vendor.
That isn't unreasonable. I've seen alleged stratum 2/3 servers that were in error by 100 ms or more. Not sure how they broke it, but they did. Usually it's better than 50 ms, but I wouldn't bet my life on it.
I can burn 1.5 Gbps with a single HD video stream. Network HD video feeds are distributed at 45 Mbps.
Trip flares!
See http://www.ycars.org/EFRA/Module%20B/AMTX%20Prop.h tm.
In most places, there is always someone willing to cut corners if it will put extra money in their pocket.
That's the most pathetic excuse for an argument that I've ever read. Anyone who criticizes our shiny new proposals is a corporate-funded astroturfer? Let me introduce another possibility, you're an idiot.
The purpose of range safety is not to protect the astronauts or the shuttle. It's to protect the public from a launch vehicle that has malfunctioned. If a launch vehicle is doing something that could result in a hazard to the public, like heading for downtown Cocoa Beach, the range safety officer terminates the flight by using the command destruct system. Contrary to popular belief, the destruct system doesn't "blow up" the launch vehicle. It is designed to terminate powered flight. This is often done by detonating linear shaped charges that are attached to solid rocket motor casings and liquid fuel tanks. The idea is that the launch vehicle, or its pieces, will then follow a ballistic trajectory and impact in a safe area. The range safety officer has computer systems that continually show the predicted impact point of the launch vehicle if all engines failed or the flight was terminated.
It works. Your average television set radiates a fair quantity of RF energy. The Germans and Russians used similar technology to find people who listened to forbidden foreign radio stations.
Scientists have been actively studying "space plasma" for almost 50 years, starting with the International Geophysical Year in 1957. It involves the Sun, its corona, the Earth's magnetic field, and the upper parts of the Earth's atmosphere. There are many things that are still not understood. The effects of the solar wind on spacecraft is a substantial field of study by itself. Spacecraft can be damaged or destroyed by static electrical charges and arcing caused by charged solar particles.
I don't think my system (Comcast) works that way. You can use the remote to pause, restart at beginning, fast forward, rewind, etc., just like a DVR. Plus, it has a fairly large library of shows and movies.
No. Digital video and Internet packets use different channels. They don't compete for bandwidth. If they have 80 channels, they may use 65 for digital video, 5 for video-on-demand, and 10 for data.
What if they install a 100 Mbps link for video/phone/internet and use up to 100% of the bandwidth for their own services (video/phone)? The Internet gets the dregs after the priority services take their bite. It would be easy to do with a QoS scheme that always gave priority to their own data. Verizon gets reserved seating and everyone else flies space available.
The one case that is handled differently is video-on-demand. That requires the temporary use of a dedicated subchannel for a single subscriber.
Your cable modem downlink works in a similar way. The cable modem tunes to a 6 MHz digital channel that contains multiplexed packets for a group of cable modem subscribers. The cable modem forwards any packets addressed to you and ignores the rest. The uplink is handled differently. Each cable modem is assigned a unique time slot on a shared RF uplink channel. When it has data to send, the cable modem waits for its time slot and then transmits packets until its time slot has ended.
What does speaker impedance have to do with efficiency (volume)? High-efficiency speakers can be designed for low or high impedances. The same is true of low-efficiency speakers.
Are you going to SMS "UR MUM IS DED" to someone? I suppose it's better than sending a singing telegram.
The reason to fight a war is that the alternatives are worse. There is still plenty of evil in the world, North Korea for example. Kim Jong Il is like Stalin, without the redeeming qualities.
ISDN was a worthwhile technology, putting a low-latency multiplexed digital communications link on existing copper wiring. The problem, at least in the USA, was how it was marketed, priced, and promoted by the telephone companies. The telephone companies wanted to push centrex and the "intelligent" circuit-switched network. They had no interest in selling cheap packet-switched data links to individuals and small businesses. They hate the concept of the dumb network. There's no great profit to be made running a dumb network.
They did that with the Corona program in the 1960s.