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» On Positive Relational Calculi
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ADHOC
2006
113views more  ADHOC 2006»
13 years 7 months ago
Positioning using local maps
ct 9 It is often useful to know the positions of nodes in a network. However, in a large network it is impractical to build a 10 single global map. In this paper, we present a new ...
Yi Shang, Wheeler Ruml, Markus P. J. Fromherz
LICS
2002
IEEE
14 years 14 days ago
Tree Extension Algebras: Logics, Automata, and Query Languages
We study relations on trees defined by first-order constraints over a vocabulary that includes the tree extension relation Ì Ì ¼, holding if and only if every branch of Ì ex...
Michael Benedikt, Leonid Libkin
IROS
2007
IEEE
144views Robotics» more  IROS 2007»
14 years 1 months ago
High precision PSD guided robot localization: Design, mapping, and position control
— This paper introduces our recently developed high precision robot localization system employing position sensitive detectors (PSD). A lateral effect PSD is an ideal position se...
S. Blank, Yantao Shen, Ning Xi, Chi Zhang, Uchechu...
PERCOM
2006
ACM
14 years 1 months ago
Groupanizer: a Method to Correlate Multi-users Position with Daily Moments
Groupanizer is an extension of groupware and constitutes a development platform to integrate user-centric information for the benefit of groupware applications. User-centric conte...
Jean Olivier Caron, Yoshihiro Kawahara, Hiroyuki M...
KI
2010
Springer
13 years 6 months ago
Positions, Regions, and Clusters: Strata of Granularity in Location Modelling
Location models are data structures or knowledge bases used in Ubiquitous Computing for representing and reasoning about spatial relationships between so-called smart objects, i.e....
Hedda Rahel Schmidtke, Michael Beigl