liyifeng1234
PRP 4 life <3
Joined: 11 Sep 2018
Posts: 1299
|
|
 |
|
HERAT Authentic Leonard Fournette Jersey , Afghanistan, July 17 (Xinhua) -- Three Afghan border police personnel, including a policewoman, were shot dead along a road in the western Afghan province of Herat on Monday, a provincial government spokesman said.
"The shooting took place in Ahmad Abad locality outside Herat city after armed men laid an ambush along Herat-Islam Qala road early this morning Authentic DJ Chark Jersey ," spokesman Jilani Farhad told Xinhua.
"The assailants singled out the police officers from a running vehicle and shot them on the side of the road," he said.
The victims were travelling to office in the town of Islam Qala near the border with Iran.
No group has claimed the attack, but the spokesman pointed fingers at Taliban militants.
The Taliban militants have been rampant since late April when they launched a so-called annual rebel offensive in different places in Afghanistan, including the capital of Kabul, killing and injuring hundreds of people.
Financial reform plans unveiled to serve real economy in sustainable manner
Federer wins eighth Wimbledon title
Color Run held in Armenia to promote healthier lifestyle
Highlights of synchronized swimming women's team technical preliminary
In pics: China's CH-5 drone completes trial flight
In pics: ethnic embroidery show in SW China's Yunnan
Chinese aircraft carrier formation conducts coordination training
Monkeys enjoy cool mist Authentic Taven Bryan Jersey , watermelon at Quanzhou Wildlife Zoo in Fujian
SAN FRANCISCO, July 7 (Xinhua) -- Researchers at University of Washington (UW) have invented a cellphone that harvests the few microwatts of power it requires from either ambient radio signals or light and requires no batteries.
Detailed in a paper published in the Proceedings of the Association for Computing Machinery on Interactive, Mobile, Wearable and Ubiquitous Technologies, the battery-free cellphone marks a major leap forward in moving beyond chargers T.J. Yeldon Jersey , cords and dying phones.
The team of computer scientists and electrical engineers eliminated a power-hungry step in cellular transmissions, namely converting analog signals that convey sound into digital data that a phone can understand, which consumes so much energy that it's been impossible to design a phone that can rely on ambient power sources.
Instead, the new technology takes advantage of tiny vibrations in a phone's microphone or speaker that occur when a person is talking into a phone or listening to a call.
An antenna connected to those components converts that motion into changes in standard analog radio signal emitted by a cellular base station. The process essentially encodes speech patterns in reflected radio signals in a way that uses almost no power.
To transmit speech, the phone uses vibrations from the device's microphone to encode speech patterns in the reflected signals. To receive speech Logan Cooke Jersey , it converts encoded radio signals into sound vibrations that that are picked up by the phone's speaker.
In the prototype device, the user presses a button to switch between the "transmitting" and "listening" modes.
Using off-the-shelf components on a printed circuit board, the UW team demonstrated that the prototype can perform basic phone functions, transmitting speech and data and receiving user input via buttons.
"We've built what we believe is the first functioning cellphone that consumes almost zero power," said co-author Shyam Gollakota Tanner Lee Jersey , an associate professor in the Paul G. Allen School of Computer Science & Engineering at the UW. "To achieve the really, really low power consumption that you need to run a phone by harvesting energy from the environment, we had to fundamentally rethink how these devices are designed."
However, the phone does require a small amount of energy to perform some operations. The prototype has a power budget of 3.5 microwatts.
The researchers demonstrated how to harvest this small amount of energy from two different sources. The phone prototype can operate on power gathered from ambient radio signals transmitted by a base station up to 9.45 meters away.
And using power harvested from ambient light with a tiny solar cell, roughly the size of a grain of rice Will Richardson Jersey , the device was able to communicate with a base station that was 15.24 meters away.
Next, according to a news release from UW this week, the research team plans to focus on improving the battery-free phone's operating range and encrypting conversations to make them secure.
Xi urges BRICS to promote open world economy, multilateralism, common development
China marks 80th anniversary of nationwide war against Japan
Aircraft carrier "Liaoning" sails near Lamma Island in HK
Rare photos commemorate 80th anniversary of "July 7 Incident"
Main structure of Hong Kong-Zhuhai-Macao Bridge finished
Aircraft carrier "Liaoning" sails near Lamma Island in HK
Tourists visit Int'l Bazar at Urumqi in NW China's Xinjiang
Lotus flowers blossom across China
China will get its first professional rugby union competition as part of a $100 million investment in the currently low-profile sport by e-commerce giant Alibaba Ronnie Harrison Jersey , the firm and World Rugby said Wednesday.
As well as professional men's and women's 15-a-side leagues, a national sevens program will be set up, the two said in separate statements. The money will be spent over 10 years.
But rugby has heavy handicaps to overcome in the world's most populous country.
Fewer than 80,000 Chinese play the sport and it is far less popular among spectators than football or basketball. Its Chinese name translates literally as "English-style olive ball."
World Rugby would not specify the size of the league, or when it would start.
The chief executive of Alibaba's sporting arm Alisports A. J. Cann Jersey , Zhang Dazhong, said the game had "undoubted potential" to become a "mass-pa. Wholesale Jerseys From China http://www.wholesalemlbcheapjerseyschina.com/ Wholesale Jerseys China Wholesale Custom Jerseys Wholesale Throwback Jerseys Wholesale Jerseys From China Wholesale Baseball Jerseys From China Wholesale Hockey Jerseys Wholesale Basketball Jerseys From China Cheap Baseball Jerseys |
|
Post subject: Fewer than 80,000 Chinese play the sport and it is
