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MOBISYS
2011
ACM
14 years 2 months ago
Indoor localization without infrastructure using the acoustic background spectrum
We introduce a new technique for determining a mobile phone’s indoor location even when Wi-Fi infrastructure is unavailable or sparse. Our technique is based on a new ambient so...
Stephen P. Tarzia, Peter A. Dinda, Robert P. Dick,...
ER
1997
Springer
102views Database» more  ER 1997»
15 years 4 months ago
From Ancient Egyptian Language to Future Conceptual Modeling
This paper discusses the construction principles of ancient Egyptian hieroglyphs from the point of view of conceptual modeling. The paper starts with a summary of author’s previo...
Peter P. Chen
DEXA
1994
Springer
81views Database» more  DEXA 1994»
15 years 4 months ago
Supporting Information Disclosure in an Evolving Environment
Even if high-level query languages are used, query formulation may cause problems. This is notably so in case of large and complex application domains. Typical examples of these ki...
Arthur H. M. ter Hofstede, Henderik Alex Proper, T...
VLDB
1994
ACM
148views Database» more  VLDB 1994»
15 years 3 months ago
Fast Incremental Indexing for Full-Text Information Retrieval
Full-text information retrieval systems have traditionally been designed for archival environments. They often provide little or no support for adding new documents to an existing...
Eric W. Brown, James P. Callan, W. Bruce Croft
ICIAR
2007
Springer
15 years 3 months ago
Object-Based Surveillance Video Retrieval System with Real-Time Indexing Methodology
This paper presents a novel surveillance video indexing and retrieval system based on object features similarity measurement. The system firstly extracts moving objects from the vi...
Jacky S-C. Yuk, Kwan-Yee Kenneth Wong, Ronald H. Y...