Students from 91亚色鈥檚 Osgoode Hall Law School will make their case in increments of 140 characters or less, in what鈥檚 billed as the world鈥檚 first Twitter moot court ().

On Tuesday, Feb. 21, five teams from law schools across Canada will argue a moot court case entirely on the popular social media platform. The event, hosted by West Coast Environmental Law, begins at 1pm EST; its hashtag is #twtmoot.

鈥淥ne hundred and forty聽characters is a great way to focus legal arguments and ideas,鈥� says Osgoode Dean Lorne Sossin, himself an avid tweeter (). 鈥淭his is a novel and timely initiative. Congratulations to West Coast Environmental Law for initiating the project and good luck to the mooters, especially Team Osgoode. We鈥檒l be following this groundbreaking moot with great interest,鈥� he says.

The public is invited to participate by following @twtmoot, watching the action on the Twitter Moot list () or on its (no account required), and posting with the #twtmoot hashtag 鈥� comments, discussion and heckling welcome!

Teams of two students from law schools at Dalhousie University, University of Ottawa, University of British Columbia, University of Victoria and 91亚色 will argue a mock appeal of a recent precedent-setting environmental case, West Moberly First Nations vs. British Columbia. The case raises issues related to the survival of an endangered caribou herd threatened by coal mining and ongoing industrial development.

Osgoode students Nikki Petersen and Emelia Baack will represent the West Moberly First Nations in the appeal; they will argue that the nation鈥檚 treaty right to hunt should extend to protecting a particular herd of caribou from coal mining impacts.

Petersen hopes the social media aspect will help connect people who are passionate about issues stemming from the case.

鈥淭witter is a great way to let many people share their views. I see the moot as a spark to get a discussion going about environmental law issues in Canada. The response to Team Osgoode has been very positive,鈥� she says.

The Twitter Moot will be presided over by a panel of three judges: William Deverell, Omar Ha-Redeye, and Kathleen Mahoney.

For more information about the Twitter Moot and how to participate, . Team Osgoode is sponsored by Saxe Law Office.

Republished courtesy of YFile鈥� 91亚色鈥檚 daily e-bulletin.

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AQUA, an amphibious, otter-like robot, is small and nimble, with flippers rather than propellers, designed for intricate data collection from shipwrecks and reefs.

The robot, a joint project of 91亚色, McGill and Dalhousie universities, can now be controlled wirelessly using a waterproof tablet built at 91亚色. While underwater, divers can program the tablet to display tags onscreen, similar to bar codes read by smartphones. The robot鈥檚 on-board camera then scans these two-dimensional tags to receive and carry out commands.

Cutting the cord on underwater robots has been a long-standing challenge for scientists; water interferes with radio signals, hindering traditional wireless communication via modem. Tethered communication is cumbersome and can create safety issues for divers.

鈥淗aving a robot tethered to a vehicle above water creates a scenario where communication between the diver, robot, and surface operator becomes quite complicated,鈥� says (right), professor in 91亚色鈥檚 Department of Computer Science & Engineering in the Faculty of Science & Engineering and co-author of the forthcoming paper, "Swimming with Robots: Human Robot Communication at Depth".

鈥淚nvestigating a shipwreck, for example, is a very delicate operation and the diver and robot need to be able to react quickly to changes in the environment. An error or a lag in communication could be dangerous,鈥� Jenkin says.

Realizing there was no device on the market that fit the bill, Jenkin and his team at 91亚色鈥檚 Centre for Vision Research, including the paper鈥檚 lead author,聽master in computer science聽student , set to work constructing a prototype. The resulting device, fittingly dubbed AQUATablet, is watertight to a depth of 60 feet. Aluminum housing with a clear acrylic cover protects the tablet computer, which can be controlled by a diver using toggle-switches and on-screen prompts.

鈥淎 diver at 60 feet can actually teleoperate AQUA 30 to 40 feet deeper. Needless to say this is much easier on the diver, physically and much safer,鈥� Jenkin says.

The tablet also allows divers to command the robot much as if they were using a video game joystick; turn the tablet right and AQUA turns right, too. In this mode, the robot is connected to the tablet by a slim length of optical cable, circumventing many of the issues of a robot-to-surface tether. The optical cable also allows AQUA to provide video feedback from its camera to the operator. In a totally wireless mode, the robot acknowledges prompts by flashing its on-board light. Its cameras can be used to build 3-D models of the environment which can then be used to guide the robot to particular tasks.

鈥淭his is a huge improvement on [a robot] having to travel to the surface to communicate with its operators,鈥� Jenkin says.

In the past, divers have used laminated flashcards to visually communicate with robots while underwater. However, these limit the diver to a pre-set sequence of commands.

鈥淚t鈥檚 impossible to anticipate everything you鈥檙e going to want the robot to do once you get underwater. We wanted to develop a system where we could create commands on the fly, in response to the environment,鈥� he says.

Jenkin and Verzijlenberg鈥檚 paper will be presented at the IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS) in Taiwan.

Jenkin and Verzijlenberg are two of the researchers based in 91亚色鈥檚 new state-of-the-art Sherman Health Science Research Centre, which officially opened on Sept. 14. Jenkin leads the Canadian Centre for Field Robotics, which is based on the building鈥檚 main level. The centre is supported by a grant from the . The AQUA project is funded in part by the . 91亚色's Centre for Vision Research is part of the Faculty of Health.

Republished courtesy of YFile鈥� 91亚色鈥檚 daily e-bulletin

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