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» A General Approach to Securely Querying XML
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GIS
2009
ACM
14 years 11 months ago
LBS (k, T)-anonymity: a spatio-temporal approach to anonymity for location-based service users
We propose a location-based query anonymization technique, LBS (k,T)-anonymization, that ensures anonymity of user's query in a specific time window against what we call know...
Amirreza Masoumzadeh, James Joshi, Hassan A. Karim...
SIGMOD
2008
ACM
198views Database» more  SIGMOD 2008»
16 years 1 months ago
Efficient storage scheme and query processing for supply chain management using RFID
As the size of an RFID tag becomes smaller and the price of the tag gets lower, RFID technology has been applied to a wide range of areas. Recently, RFID has been adopted in the b...
Chun-Hee Lee, Chin-Wan Chung
ITICSE
2004
ACM
15 years 6 months ago
The backwash effect on SQL skills grading
This paper examines the effect of grading approaches for SQL query formulation on students’ learning strategies. The way that students are graded in a subject has a significant ...
Julia Coleman Prior, Raymond Lister
IADIS
2003
15 years 2 months ago
Towards a Distributed Information Architecture for Avionics Data
Avionics data at the National Aeronautics and Space Administration’s (NASA) Jet Propulsion Laboratory (JPL) consists of distributed, unmanaged, and heterogeneous information tha...
Chris Mattmann, Dana Freeborn, Daniel J. Crichton
SIGMOD
2008
ACM
210views Database» more  SIGMOD 2008»
16 years 1 months ago
Private queries in location based services: anonymizers are not necessary
Mobile devices equipped with positioning capabilities (e.g., GPS) can ask location-dependent queries to Location Based Services (LBS). To protect privacy, the user location must n...
Gabriel Ghinita, Panos Kalnis, Ali Khoshgozaran, C...