Links for 2014-02-06

  • Realtime water level data across Ireland

    Some very nice Dygraph-based time-series graphs in here, along with open CSV data. Good job!

    (tags: open-data water-levels time-series data rivers ireland csv)

  • The Gardai haven’t requested info on any Twitter accounts in the past 6 months

    This seems to imply they haven’t been investigating any allegations of cyber-bullying/harassment from “anonymous” Twitter handles, despite having the legal standing to do so. Enforcement is needed, not new laws

    (tags: cyber-bullying twitter social-media enforcement gardai policing harassment online society law government)

  • QuakeNet IRC Network- Article – PRESS RELEASE: IRC NETWORKS UNDER SYSTEMATIC ATTACK FROM GOVERNMENTS

    QuakeNet are not happy about GCHQ’s DDoS attacks against them.

    Yesterday we learned … that GCHQ, the British intelligence agency, are performing persistent social and technological attacks against IRC networks. These attacks are performed without informing the networks and are targeted at users associated with politically motivated movements such as “Anonymous”. While QuakeNet does not condone or endorse and actively forbids any illegal activity on its servers we encourage discussion on all topics including political and social commentary. It is apparent now that engaging in such topics with an opinion contrary to that of the intelligence agencies is sufficient to make people a target for monitoring, coercion and denial of access to communications platforms. The … documents depict GCHQ operatives engaging in social engineering of IRC users to entrap themselves by encouraging the target to leak details about their location as well as wholesale attacks on the IRC servers hosting the network. These attacks bring down the IRC network entirely affecting every user on the network as well as the company hosting the server. The collateral damage and numbers of innocent people and companies affected by these forms of attack can be huge and it is highly illegal in many jurisdictions including the UK under the Computer Misuse Act.

    (tags: quakenet ddos security gchq irc anonymous)

  • PID controller

    Good to know; this generic anti-flap damping algorithm has a name.

    A proportional-integral-derivative controller (PID controller) is a generic control loop feedback mechanism (controller) widely used in industrial control systems. A PID controller calculates an “error” value as the difference between a measured process variable and a desired setpoint. The controller attempts to minimize the error by adjusting the process control outputs.

    (tags: control damping flapping pid-controller industrial error algorithms)

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2 Comments

  1. Conor
    Posted February 12, 2014 at 10:22 | Permalink

    I was absolutely delighted to see the water level data! It is great to see this type of data being made easily available. Another forward thinking public agency is the Marine Institute who are using technology developed by NOAA to make very complex data freely available to developers (erddap.marine.ie & erddap2.marine.ie). The technology involved is a broker/mediator which provides a restful interface to the extremely complicated file types that ocean and weather models produce.

  2. Posted February 12, 2014 at 11:50 | Permalink

    hey Conor! great to see those — also, it is good to see them reusing NOAA code rather than reinventing the wheel.