Missing Mh370: How Satellites Communicate With A Plane And Determine Its Location

News reports say the satellite communications came from the plane’s Aircraft Communications Addresssing and Reporting System (ACARS), which is a digital datalink for short messages between a plane and airline operations, air traffic controllers and other authorised parties. ACARS allows pilots to send simple short text messages transmitted through radio signals and satellites. ACARS also sends data about engine performance to its manufacturers, and automatically generated data on the technical condition of the plane. Although the Malaysian authorities believe someone on Flight MH370 deliberately switched off its communication systems including ACARS, perhaps to hide its location, its powerful antenna remained operational, and was receiving and responding to checks from a satellite once an hour. London-based Inmarsat, which operates 10 satellites in geostationary orbit about 35,780km above Earth, said on March 14 that its network had picked up routine, automated signals from Flight MH370.
For the original version including any supplementary images or video, visit http://www.straitstimes.com/breaking-news/se-asia/story/missing-mh370-how-satellites-communicate-plane-malaysia-airlines

A Presentation Isn’t Always the Right Way to Communicate

Ask yourself what you want to get out of the time you have with the group. Do you need to simultaneously inform, entertain, and persuade your audience to adopt a line of thinking or to take action? Or do you need to gather more information, have a discussion, or drive the group toward consensus to get to your desired next step? Generally, if your idea would be best served by more interaction with your audience, you should probably have a conversation instead of delivering a presentation. The best conversations will happen when youve briefed everyone ahead of time on the information youre going to discuss. (Otherwise, you waste valuable meeting time playing catch-up instead of working toward your goal.) To get everyone up to speed, create a visual document in presentation software what I call a slidedoc and circulate it before the meeting.
For the original version including any supplementary images or video, visit http://blogs.hbr.org/2014/03/a-presentation-isnt-always-the-right-way-to-communicate/

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