| 单词 | backscatter |
| 例句 | Last week, the union representing 11,500 pilots at American Airlines called on members to “politely decline” screening by the “backscatter” models of the machines, the models that use X-ray technology. On the Road: Screening Protests Grow as Holiday Crunch Looms 2010-11-16T21:17:00Z The more controversial “backscatter” devices project an X-ray beam onto the body, creating an image displayed on a monitor viewed by a T.S.A. employee in another room. Practical Traveler: Are Scanners Worth the Risk? 2010-09-07T21:50:00Z What I like about this photograph is the imperfection of backscatter, recreating space and making it perfect to me. Underwater Photographer of the Year winner revealed 2022-02-10T05:00:00Z The study relies on a special kind of radar data known as “backscatter”—it’s essentially a measurement of the waves reflected back to the satellite emitting the radar signal. Greenland’s Lakes Are Vanishing During Winter as Well as Summer 2021-04-02T04:00:00Z It’s all very interesting, but I was mesmerized by the backscatter the most. This little self-driving boat is changing the way we search for shipwrecks 2020-03-05T05:00:00Z With the shuttering of backscatter x-ray scanners, the TSA shifted to millimeter wave body scanners. Is That Airport Security Scanner Really Safe? 2017-12-18T05:00:00Z European authorities almost immediately banned the use of the backscatter X-ray machines, and the TSA followed suit in 2013—though the agency never formally acknowledged that it was dumping the scanners due to health concerns. You Asked: Are Airport Body Scanners Safe? 2017-08-23T04:00:00Z OSI Chief Executive Deepak Chopra said the company’s largest acquisition to date fits well into its expansion strategy, with American Science & Engineering’s backscatter X-ray technology, products and network complementing its existing operations. OSI Systems to Buy American Science & Engineering for $269 Million 2016-06-21T04:00:00Z That means a liquid lake should produce less backscatter than a frozen surface. Greenland’s Lakes Are Vanishing During Winter as Well as Summer 2021-04-02T04:00:00Z I looked for tell-tale ripples and anomalies in the backscatter, any beams or fragments that might suggest a wreck. This little self-driving boat is changing the way we search for shipwrecks 2020-03-05T05:00:00Z Where’s the backscatter X-ray for the neighborhood sidewalk, the school or our bedrooms? TSA: Keeping us safe from Grandma’s dumplings (but maybe not weapons) 2015-06-04T04:00:00Z “We know there are biological mechanisms by which X-ray exposure can cause cancer...it seemed likely that those backscatter scanners would carry some small risks.” You Asked: Are Airport Body Scanners Safe? 2017-08-23T04:00:00Z The researchers tested the ambient backscatter technique with credit card-sized prototype devices placed within several feet of each other. No Batteries Required: New Wireless Technology May Power Range Of Mobile / Wearable Devices 2013-09-03T16:35:00Z Then, they looked for instances in which backscatter over those lakes suddenly increased during the winter months. Greenland’s Lakes Are Vanishing During Winter as Well as Summer 2021-04-02T04:00:00Z It’s called ambient backscatter, a technique whereby a device appropriates wireless signals already bouncing around in the atmosphere and uses them both as a power source and a way to communicate with other devices. These Wireless Radios Don't Need Batteries 2013-08-16T01:20:30Z The agency said that most of the backscatter units will be replaced with millimeter-wave units. On the Road: A Farewell to ‘Nudity’ at Airport Checkpoints 2013-01-22T02:12:20Z Apart from the privacy questions posed by the use of the backscatter technology, some experts also had concerns that those scanners exposed travelers to potentially dangerous amounts of radiation. You Asked: Are Airport Body Scanners Safe? 2017-08-23T04:00:00Z The TSA "is in the process of removing all the backscatter units from ... airports where they are deployed and will replace most of them with millimeter wave technology," he said. U.S. replaces airport scanners in bid for more privacy 2013-01-18T22:21:04Z The European Union last year banned the use of backscatter scanners at European airports over health concerns. Feds call for new safety review of airport scanners 2012-12-20T22:17:00Z The backscatter machines are still used for screening at a few of America’s largest 25 airports, but the TSA has not confirmed which ones. X-ray body scanners removed from major airports 2012-10-19T18:05:00Z Most experts agree that as long as the X-ray backscatter machines are functioning properly, they expose passengers to only extremely low doses of ionizing radiation. The Consumer: Airport Security Scanners Leave Lingering Worries 2012-08-06T21:40:23Z Then there are the airport checkpoints, where the old metal detectors are being replaced by millimeter-wave and backscatter scanners. The TSA's Dumb Air-Security Rules Are Not Based on Science 2012-06-26T12:15:06.343Z The TSA had faced widespread complaints from travelers that the Rapiscan equipment, using an X-ray technology called backscatter, had shown what looks like a naked image of passengers' bodies to security officers. U.S. replaces airport scanners in bid for more privacy 2013-01-18T22:21:04Z The scanners that use X-rays, or backscatter technology, have received the most criticism from passenger advocates and scientists, including professors from UC San Francisco. Feds call for new safety review of airport scanners 2012-12-20T22:17:00Z The Department of Homeland Security insists that backscatter X-ray machines pose no danger to public health. Government Says Airport Scanners Are Safe 2012-03-03T00:05:42Z In another report, researchers estimated that one billion X-ray backscatter scans per year would lead to perhaps 100 radiation-induced cancers in the future. The Consumer: Airport Security Scanners Leave Lingering Worries 2012-08-06T21:40:23Z “Among other things, such a study should examine the risk of backscatter X-ray technology from a public health perspective in addition to the potential risk to individuals and Transportation Security Administration employees.” Well Blog: Airport Scanner Radiation Risks Are Minimal, Government Report Says 2012-02-29T21:34:33Z Airport screening and radiation Some of the airport body scanners, known as backscatter scanners, emit X-rays which bounce off the body to create an image. Airport Screeners to be Monitored for Radiation, TSA Says 2012-01-10T16:15:04.647Z VIDEO: Airport Scanners and You: An Odd Todd Cartoon Brenner further points to the lack of independent and clinical data on backscatter X-ray safety as a reason not to use the devices. Europe Bans Airport X-Ray Scanners. Should the U.S. Follow Suit? 2011-11-21T17:05:35Z About 250 of the scanners, known as backscatter machines, are currently operating in 39 U.S. airports. Government Says Airport Scanners Are Safe 2012-03-03T00:05:42Z The European Commission adopted new rules Nov. 14 regarding X-ray, or backscatter, body scanners at all airports in Europe. Europe Bans Airport X-Ray Scanners that U.S. Still Uses 2011-11-17T10:05:36Z X-ray body scanners, which use “backscatter” ionized radiation technology, emit enough radiation to theoretically damage DNA and cause cancer. Europe Bans Airport Body Scanners over "Health and Safety" Concerns 2011-11-16T04:55:35Z Meanwhile, scientists began developing backscatter X-rays, in which the waves are reflected off an object to a detector, for the security industry. U.S. Glossed Over Cancer Concerns Associated with Airport X-ray Scanners 2011-11-01T20:45:00.500Z So it seems to me a strange decision to use the backscatter machine, where you don't really know what the risks are; the biggest issue is the uncertainty. Europe Bans Airport X-Ray Scanners. Should the U.S. Follow Suit? 2011-11-21T17:05:35Z Among other things, such a study should examine the risk of backscatter X-ray technology from a public health perspective in addition to the potential risk to individuals and TSA employees.” Government Says Airport Scanners Are Safe 2012-03-03T00:05:42Z All 300 of the new machines ordered are millimeter-wave machines — rather than backscatter X-ray machines, that have been controversial due to their use of radiation. TSA's De Facto Phase-Out of 'Naked' Scanners 2011-10-07T18:11:01Z These include millimeter-wave technology, which uses millimeter-wavelength radio waves to generate three-dimensional images as well as backscatter scanners, which employ low-level x-rays. Yes We Scan: Have New Airport Screening Technologies Inspired by 9/11 Made Us Safer? [Slide Show] 2011-09-09T11:45:00.203Z Customs Service deployed backscatter machines for several years but in limited fashion and with strict supervision. U.S. Glossed Over Cancer Concerns Associated with Airport X-ray Scanners 2011-11-01T20:45:00.500Z The current data on radiation exposure from backscatter machines comes largely from the government and from the scanner's manufacturer. Europe Bans Airport X-Ray Scanners. Should the U.S. Follow Suit? 2011-11-21T17:05:35Z During the Ecological Society meeting, Frick played a movie of backscatter images in which a weather front corralled insects along its leading edge. Look, Up In the Sky: It's Aeroecology 2011-08-18T14:38:00Z At this point, the Automated Target Recognition software can’t be added to backscatter X-ray machines. TSA's De Facto Phase-Out of 'Naked' Scanners 2011-10-07T18:11:01Z The other has “backscatter technology” that uses low- intensity X-ray beams. Airport Body Scans Can Continue While U.S. Seeks Comments 2011-07-15T18:02:41Z The backscatter machines had also caught the attention of the 1998 FDA advisory panel, which recommended that the FDA establish government safety regulations for people scanners. U.S. Glossed Over Cancer Concerns Associated with Airport X-ray Scanners 2011-11-01T20:45:00.500Z Pilots' unions, for example, have publicly recommended that members opt for the radiation-free pat-down if the only other option is a backscatter scan. Europe Bans Airport X-Ray Scanners. Should the U.S. Follow Suit? 2011-11-21T17:05:35Z Scanners of the type used to inspect the trucks in Mexico, known as backscatter scanners, are widely employed to check cargo for weapons and drugs, and also to catch human smuggling. The Lede: Scan Reveals 513 Migrants in Trucks 2011-05-18T14:13:59Z A member of an independent outside council that provides advice to the Privacy Office suggested that TSA phase out backscatter X-ray machines completely. TSA's De Facto Phase-Out of 'Naked' Scanners 2011-10-07T18:11:01Z Only one type of full-body airport scanner -- the backscatter X-ray machine -- expose individuals to ionizing radiation such as that used in common medical X-rays. Radiation from airport scanners very low: study 2011-03-28T21:06:04Z Indeed, in 2007, with new privacy filters in place, the TSA began a trial of millimeter-wave and backscatter machines at several major airports, after which the agency opted to go with the millimeter-wave machines. U.S. Glossed Over Cancer Concerns Associated with Airport X-ray Scanners 2011-11-01T20:45:00.500Z As the privacy controversy around full-body security scans begins to simmer, it’s worth noting that courthouses and airport security checkpoints aren’t the only places where backscatter x-ray vision is being deployed. Full-Body Scan Technology Deployed In Street-Roving Vans 2011-03-04T04:34:33Z Using calculations of the amount of radar backscatter from a single bat in the laboratory, the group is developing the first means to calculate aerial densities of bats as they travel on the wing. Storm-Chasing Weather Radar Used to Track Bat Populations 2011-02-22T17:10:00Z The advisory council member, Barry Steinhardt, then suggested that TSA announce publicly that they would be phasing out the backscatter machines. TSA's De Facto Phase-Out of 'Naked' Scanners 2011-10-07T18:11:01Z TSA begins testing new advanced imaging technology machines According to the TSA, the new software is being tested on millimeter wave machines, but the agency plans to test similar software on backscatter units. TSA debuts less-revealing software for airport scanners 2011-02-01T23:28:01Z Radiation experts say the dose from the backscatter is negligible when compared to naturally occurring background radiation. U.S. Glossed Over Cancer Concerns Associated with Airport X-ray Scanners 2011-11-01T20:45:00.500Z Two types of scanning machines - backscatter and millimeter wave - have been installed at airports since 2007, when they were launched as part of a pilot program at Phoenix Sky Harbor International Airport. Are airport X-ray machines catching more than naked images? 2010-12-26T01:57:00Z Former homeland security chief Michael Chertoff, a longtime advocate for increased use of passenger scanners, worked until recently as a consultant for Rapiscan, which provides "backscatter" X-ray scanners to the TSA. Firms' lobbying push comes amid rancor on TSA use of airport full-body scanners 2010-12-23T23:23:00Z “I agree,” responded Pietra, indicating that was not within his authority to announce and noting that the backscatter machines already purchased would continue to be used. TSA's De Facto Phase-Out of 'Naked' Scanners 2011-10-07T18:11:01Z Two types of scanning machines - backscatter and millimeter wave - have been installed at airports. TSA debuts less-revealing software for airport scanners 2011-02-01T23:28:01Z In this sea of cancer cases, it would be impossible to identify the patients whose cancer is linked to the backscatter machines. U.S. Glossed Over Cancer Concerns Associated with Airport X-ray Scanners 2011-11-01T20:45:00.500Z He's primarily concerned that one of the two types of new scanners, the backscatter X-ray, might pose risks to people who are more vulnerable to radiation exposure. Full-body scanners: Exposing issues of privacy, and body image 2010-12-22T14:47:00Z If we insist on relying on those backscatter body scanners, why are we deploying them domestically rather than at airports abroad? One step ahead of the terrorists? 2010-11-24T02:01:00Z But some travelers have also raised concerns about radiation exposure from the predominant model of the machine in use, the so-called backscatter machine. On the Road: What to Expect in the Holiday Travel Chaos 2010-11-23T01:09:00Z In development for several years, the scanners use backscatter and millimeter wave technology intended to reveal nonmetallic security threats that wouldn't be caught by traditional step-through metal detectors. Poll: Nearly two-thirds of Americans support full-body scanners at airports 2010-11-22T22:41:00Z While we’re at it, consider the risk to all those air travelers who are being scanned by the supposedly safe backscatter image machines. Well: The Downside of a Cancer Study Extolling CT Scans 2010-11-16T15:20:00Z "The pat down poses no health risks to me," he explains, whereas he's uncertain about the cumulative radiation exposure posed by the backscatter scanner. Radiation Experts Concerned With TSA Airport Security Scanners 2010-11-18T23:39:00Z Let’s just focus today on radiation, a concern with one kind of body scanner that is being installed at airports, the so-called backscatter machines. On the Road: Radiation Questions Over a Body Scanner 2010-07-26T22:38:00Z A new attendant led him to a backscatter X-ray. Salvatore Scibona: “The Kid.” 2010-06-07T04:00:00Z The backscatter image looks like a body sketch by an amateur artist, unrefined and not worth hanging on the fridge door. 2010-02-07T05:00:00Z But, he said, if millions or tens of millions of passengers a year were scanned with the backscatter X-ray, he said, the risk would be higher. 2010-01-09T01:36:00Z I should point out that there's another type of full-body scanner being used in some airports that many experts prefer over the backscatter machine. Radiation Experts Concerned With TSA Airport Security Scanners 2010-11-18T23:39:00Z As of last week, the agency said, there were 99 backscatter units and 43 millimeter wave units at 41 airports. On the Road: Radiation Questions Over a Body Scanner 2010-07-26T22:38:00Z It uses a second technology approved by the agency, backscatter X-rays, which create two-dimensional images of passengers as well as weapons and explosives that standard airport metal detectors don't pick up. 2010-01-07T22:00:00Z For now, those who seldom travel through airports shouldn't be too concerned about radiation exposure from backscatter scanners. Radiation Experts Concerned With TSA Airport Security Scanners 2010-11-18T23:39:00Z And in the wake of the attempted bombing of an airplane traveling to Detroit from Amsterdam on Dec. 25, the United States is turning to backscatter scanners for routine security checks. 2010-01-09T01:36:00Z Of the 385 imaging units at 68 U.S. airports, about half are millimeter wave scanners and half are backscatter machines. Radiation Experts Concerned With TSA Airport Security Scanners 2010-11-18T23:39:00Z According to the agency, “a single scan using backscatter technology produces exposure equivalent to two minutes of flying on an airplane,” where slightly higher levels of radiation are routine. On the Road: Radiation Questions Over a Body Scanner 2010-07-26T22:38:00Z Britain plans to use whole-body scanners and may test the backscatter system. 2010-01-09T01:36:00Z But rather than making an image from what passes through the body, as a doctor’s diagnostic X-ray machine does, backscatter machines measure what bounces back, producing an image of the passenger without clothing. 2010-01-09T01:36:00Z |
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