New study suggests mobile data collected while traveling over bridges could help evaluate their integrity
Want to know if the Golden Gate Bridge is holding up well? There could be an app for that.
Nov 3, 2022
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Want to know if the Golden Gate Bridge is holding up well? There could be an app for that.
Nov 3, 2022
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Can we survive three minutes without air or three days without water? How about without batteries? Imagine not having a battery for three hours.
Nov 2, 2022
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Sodium-metal batteries (SMBs) are one of the most promising high-energy and low-cost energy storage systems for the next-generation of large-scale applications. However, one of the major impediments to the development of ...
Oct 5, 2022
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A safer, greener, and inexpensive rechargeable battery for powering electric vehicles, mobile phones and many other applications could be a step closer following a breakthrough discovery by NUS researchers.
Aug 23, 2022
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Researchers from UNSW Sydney have developed a tiny, transparent and flexible material to be used as a novel dielectric (insulator) component in transistors. The new material would enable what conventional silicon semiconductor ...
Aug 3, 2022
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A crucial but poorly-studied parameter that dictates battery performance is the migration barrier. It determines the rate at which ions move through an electrode inside the battery, and ultimately the rate at which it charges ...
Jul 25, 2022
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A team of engineers at the University of California San Diego has demonstrated for the first time that the Bluetooth signals emitted constantly by our mobile phones have a unique fingerprint that can be used to track individuals' ...
Jun 8, 2022
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Apple, Google and Microsoft said Thursday they are looking to get rid of passwords and replace them with a more secure way to access accounts or devices.
May 5, 2022
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With nearly 84% of the world's population now owning a smartphone, and our dependence on them growing all the time, these devices have become an attractive avenue for scammers.
Apr 28, 2022
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Research has long strived to develop computers to work as energy efficiently as our brains. A study, led by researchers at the University of Gothenburg, has succeeded for the first time in combining a memory function with ...
Nov 29, 2021
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A mobile phone or mobile (also called cellphone and handphone, as well as cell phone, wireless phone, cellular phone, cell, cellular telephone, mobile telephone or cell telephone) is a long-range, electronic device used for mobile voice or data communication over a network of specialized base stations known as cell sites. In addition to the standard voice function of a mobile phone, telephone, current mobile phones may support many additional services, and accessories, such as SMS for text messaging, email, packet switching for access to the Internet, gaming, Bluetooth, infrared, camera with video recorder and MMS for sending and receiving photos and video, MP3 player, radio and GPS. Most current mobile phones connect to a cellular network consisting of switching points and base stations (cell sites) owned by a mobile network operator (the exception is satellite phones, which are mobile but not cellular).
As opposed to a radio telephone, a mobile phone offers full duplex communication, automatised calling to and paging from a public switched telephone network (PSTN), handoff (am. English) or handover (European term) during a phone call when the user moves from one cell (base station coverage area) to another. A mobile phone offers wide area service, and should not be confused with a cordless telephone, which also is a wireless phone, but only offer telephony service within a limited range, e.g. within a home or an office, through a fixed line and a base station owned by the subscriber.
The International Telecommunication Union estimated that mobile cellular subscriptions worldwide would reach approximately 4.1 billion by the end of 2008. Mobile phones have gained increased importance in the sector of Information and communication technologies for development in the 2000s and have effectively started to reach the bottom of the economic pyramid.
This text uses material from Wikipedia, licensed under CC BY-SA