After the publication of the book, a drama scholar wrote to Mr. Unsworth asking for his source on the hand-signal system.
The box, the size of a washer-dryer, was part of a signal system that lets drivers and dispatchers know where trains are.
"Our crews will essentially be rebuilding 2, 000 feet of damaged track and overhead wires and signal system, " Metro-North Railroad President Howard Permut said in a statement.
But investigators are focused on a failure of the train tracks themselves, as opposed to an error by engineers or a failure of the train's signal system.
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The authority will shut down power to its signal system if it appears that large amounts of water have entered the tunnels, to prevent the salty water from doing added damage to sensitive electronic relays.
That prompted a hurried rebuilding of that part of the PATH signal system, a spokesman said, and an additional reform: The Port Authority now installs steel floodgates at the entrances to its cross-Hudson tunnels before major storms, including Sandy.
Looxcie uses a mini processor for Bluetooth that includes a digital signal processing system to process and optimize the audio.
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Paul, Minnesota installed an early signal preemption system, it reduced emergency vehicle crashes by more than 50%, despite population-fueled congestion in the years following the system's installation.
Paul, Minn. installed an early signal preemption system, it reduced emergency vehicle crashes by more than 50%, despite population-fueled congestion in the years following the system's installation.
Would the sending of a radio signal to activate this system constitute a trespass to chattels?
In a classical telecommunications system the signal has to be boosted by a repeater every 80km or so.
If said player gets dangerously close to colliding with an object, the safety system would signal an audible warning alert and pause the game.
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The hack only works until the machine is powered off, but the attack even foils that, intercepting the switch signal and making the system only appear to power down.
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It has been discovered that the Airwave radio system's signal is variable on the ground floor.
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We call that operating system elastic to signal the way that it breaks with the scale economics of the 20th and early 21st centuries.
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This is because leaves, and even pine needles can soak up a radio signal and cause the overall system to degrade during the spring and summer.
With the 2010 World Cup, the vuvuzela joins the ticking stopwatch on "60 Minutes" and the piercing signal of the Emergency Broadcast System in the pantheon of nonmusical sounds that instantly tell you what is on TV even before you've entered the room.
You see the system of blinks to signal to an assistant working with him each letter of the book.
It combines a conventional global positioning system (GPS) signal with those of other sensors - accelerometers and gyroscopes - to pinpoint a car's location to within 2m (6ft 6in).
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This new wireless remote system operates from a radio signal rather than infrared light, dramatically increasing functionality and range.
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As chief systems architect for the company, Kenoyer knew he could combine some clever software with the latest digital signal processor chips to make the same system at a fraction of the cost.
The trick only works with older 2G data services like Edge and GPRS. But by sending out a jamming signal that blocks 3G connections, the system can trick most phones into automatically downgrading to one of the two more vulnerable 2G protocols.
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Indeed, as the Sam's Club example amply proves, if market rates of interest rise to usurious levels and bank lending becomes scarce, this serves as a market signal for businesses outside the traditional banking system that their entrance into finance will be rewarded.
Bigger pixels also emit more current, allowing their signal to swamp the electrical noise in the system.
"People have voted for amendments that signal a desire for change to an outdated system of government, " said Asli Aydintasbas, a columnist with Turkey's Milliyet newspaper.
The three fishermen's vessel didn't have an Emergency Position Indicating Radio Beacon, which transmits a distress signal anywhere in the world through a satellite system, the navy said.
The old system works by monitoring the transponder signal emitted by most planes and kicks in seconds before a midair crash, ordering one jet to pull up and the other to pull down.
The alert, initially issued by Southwest Airlines and reissued Wednesday by the airline's pilot association, warned there was a "potentially significant hazard" concerning the instrument landing system's glide slope guidance signal for runway 23.
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How can it be that UBS and others, mind you, have not gotten organized a risk control system in its computers that would signal instantly a dangerously risky trade that has to be reversed?
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The station is also planning to install a transmitter and antenna system in Times Square to enhance its signal.
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