To Avoid Controversy, 'Realtime' Microblogging In China Now Delayed By 7 Days

Despite increasing competition around the world, China remains the leader when it comes to finding ways to censor the online world. A few months ago, the site Tech in Asia listed no less than eight ways in which users of Sina Weibo, China's hugely-popular homegrown microblog service, can be penalized for "inappropriate" tweets. Now it seems it has come up with a ninth: 

On Techdirt.

This is the Future: the Grid Meets the Grid

Wow, this is cool:

At first glance it’s hard to see how the open-source software framework Hadoop, which was developed for analyzing large data sets generated by web sites, would be useful for the power grid — open-source tools and utilities don’t often mix. But that was before the smart grid and its IT tools started to squeeze their way into the energy industry. Hadoop is in fact now being used by the Tennessee Valley Authority (TVA) and the North American Electric Reliability Corp. (NERC) to aggregate and process data about the health of the power grid, according to this blog post from Cloudera, a startup that’s commercializing Hadoop.

The TVA is collecting data about the reliability of electricity on the power grid using phasor measurement unit (PMU) devices. NERC has designated the TVA system as the national repository of such electrical data; it subsequently aggregates info from more than 100 PMU devices, including voltage, current, frequency and location, using GPS, several thousand times a second. Talk about information overload.

But TVA says Hadoop is a low-cost way to manage this massive amount of data so that it can be accessed all the time. Why? Because Hadoop has been designed to run on a lot of cheap commodity computers and uses two distributed features that make the system more reliable and easier to use to run processes on large sets of data.

What's interesting about this - aside from seeing yet more open source deployed in novel ways - is that it presages a day when the physical grid of electicity and its users are plugged into the digital grid, to allow massive real-time analysis of vast swathes of the modern world, and equally real-time control of it across the grid. Let's hope they get the security sorted out before then...

Follow me @glynmoody on Twitter or identi.ca.

This is What the Internet Was Invented For

Who needs television, when you've got WikipediaVision?

WikipediaVision is a visualization of edits to the English (and the German, French, Spanish) Wikipedia, almost the same time as they happen.

Be warned, this is totally addictive. (Via if:book.)

Open Bookshelf: Real-Time and Embedded Linux

Real-time and embedded Linux is an iceberg: for all its low visibility, it's pretty big below the surface, and getting bigger. If you want to get to know this world better - and you know you do - here's a bumper crop of light reading for you:

LinuxDevices.com is pleased to publish an overview and papers from the Ninth Real-Time Linux Workshop held in Linz, Austria, Nov. 2-3, 2007. The papers, available for free download without registration, span a broad range of topics, ranging from fundamental real-time technologies to applications, hardware, and tools.

(Via Linux Today.)

Real-time Google Earth

Well, almost.