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GIS
2004
ACM
14 years 11 months ago
Supporting spatial aggregation in sensor network databases
Sensor networks are unattended deeply distributed systems whose schema can be conceptualized using the relational model. Aggregation queries on the data sampled at each ode are th...
Mehdi Sharifzadeh, Cyrus Shahabi
MOBISYS
2005
ACM
14 years 10 months ago
WALRUS: wireless acoustic location with room-level resolution using ultrasound
In this paper, we propose a system that uses the wireless networking and microphone interfaces of mobile devices to determine location to room-level accuracy. The wireless network...
Gaetano Borriello, Alan L. Liu, Tony Offer, Christ...
ICRA
2007
IEEE
123views Robotics» more  ICRA 2007»
14 years 5 months ago
Gravity Balancing of a Human Leg using an External Orthosis
Abstract—Gravity balancing is often used in industrial machines to decrease the required actuator efforts during motion. In this paper, we present a new design for gravity balanc...
Abbas Fattah, Sunil Kumar Agrawal
FPL
2007
Springer
178views Hardware» more  FPL 2007»
14 years 5 months ago
Exploring Alternative 3D FPGA Architectures: Design Methodology and CAD Tool Support
This paper introduces a software supported methodology for exploring/evaluating 3D FPGA architectures. Two new CAD tools are developed: (i) the 3DPRO for placement and routing on ...
Kostas Siozios, Kostas Sotiriadis, Vasilis F. Pavl...
GECCO
2007
Springer
168views Optimization» more  GECCO 2007»
14 years 5 months ago
Empirical analysis of generalization and learning in XCS with gradient descent
We analyze generalization and learning in XCS with gradient descent. At first, we show that the addition of gradient in XCS may slow down learning because it indirectly decreases...
Pier Luca Lanzi, Martin V. Butz, David E. Goldberg