New Scientist has an article on turning any surface into a touch screen using small piezoelectric sensors to sense surface vibrations.
Archive for November, 2006
. Loopt launched a service for subscribers with phones that contain location-savvy GPS devices. Loopt is aimed at members of social networks who want to keep constant tabs on one another, aided by pictures, maps, and alerts that sound when a friend is nearby.
. Eyeka has been started to build a community of users and partners who will create, share, comment on, and sell quality video and photo content.
. Jajah lets people make free or inexpensive Web calls from regular and mobile phones. iSkoot’s software users send Skype calls via their voice networks.
. AdMob allows advertisers like eBay, Nokia, and Adidas to buy mobile ads on various sites, and lets those sites sell mobile ads.
There’s a petition on the Prime Minister’s new petitions website that
is trying to make private copying legal, such as when you copy your
CDs onto your MP3 player, which is currently illegal in UK.
Very simple, yet interesting paper: Suicide for the common good: a new strategy for credential revocation in self-organizing systems.
Problem: Credential revocation in self-organizing systems.
Existing Solution: If a node believes another has misbehaved,
then it can carry out punishment.
Complication: A malicious node can falsely accuse legitimate
Proposal: Upon detecting a node M engaging in some illegal activity,
A broadcasts a signed suicide note which includes the
identities of both A and M. The other nodes in the network
then verify the signature and, if correct, revoke both
A and M.
1. Attacker beneï¬t from removing one innocent node must
be less than the beneï¬t of having a malicious node
placed inside the network.
2. Honest nodes share common interest
(this is reasonable whenever the nodes are deployed by a single
entity (e.g., a sensor network deployed on a battleï¬eld)).
3. An absence of unforgeable, independently veriï¬able
and conclusive proof.
4. Low likelihood of two good nodes accusing each other.
5. Difficult to prevent malicious nodes from issuing false
Computer scientists at the Washington University in St. Louis (WUSTL) have developed a new kind of software to monitor wireless sensor networks. For example, their software agents can help robots to navigate through simulated fires. Their real innovation is that their software agents are able to clone themselves, creating a ring of software around the fire. This very flexible approach to monitoring wireless sensor networks could be used in a wide variety of applications, like safeguarding containers in a warehouse â€” or on boats.
In a perfect world, scientists share problems and work together on solutions for the good of society. In the real world, however, that’s usually not the case. The main obstacles: competition for publication and intellectual property protection. Is there a model for encouraging large-scale scientific problem solving? Yes, and it comes from an unexpected and unrelated corner of the universe: open source software development. That’s the view of Karim R. Lakhani, an assistant professor at Harvard Business School … What he and his coauthors discovered: “broadcasting” or introducing problems to outsiders yields effective solutions. Indeed, it was outsidersâ€”those with expertise at the periphery of a problem’s fieldâ€”who were most likely to find answers and do so quickly. The study and its findings are described in his paper “The Value of Openness in Scientific Problem Solving”.
From TechReview. A Nokia research project could one day make it easier to navigate the real world by superimposing virtual information on an image of your surroundings. The new software, called Mobile Augmented Reality Applications (MARA), is designed to identify objects viewed on the screen of a camera phone.
The Nokia research team has demonstrated a prototype phone equipped with MARA software and the appropriate hardware: a global positioning system (GPS), an accelerometer, and a compass. The souped-up phone is able to identify restaurants, hotels, and landmarks and provide Web links and basic information about these objects on the phone’s screen. In addition, says David Murphy, an engineer at Nokia Research Center, in Helsinki, Finland, who works on the project, the system can also be used to find nearby friends who have phones with GPS and the appropriate software.
It contains lots of real mobility traces. “…volunteers to collect and upload the GPS data that creates the maps. There are more than 3,600 contributors doing around 50 uploads a day”
In conjunction with ICDCS
Submission Deadline: 5 January 2007
US online DVD rental service Netflix Inc has announced a version of the Longitude prize for film geeks – a $1m (Â£529.6m) bounty to the first person to develop software to improve its movie recommendation system by 10%.
The full story is posted in the Guardian and on the NetFlix Prize site
The current system works by making predictions based on correlations between user feedback (as described in this interview).