Jayant Gupchup Graduate student, Johns Hopkins University Representative Slides.

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Presentation transcript:

Jayant Gupchup Graduate student, Johns Hopkins University Representative Slides

Jayant Gupchup, Johns Hopkins Universityhttp:// Environmental Monitoring

Jayant Gupchup, Johns Hopkins Universityhttp:// Cub Hill [Dec 2008 to Sep 2009]

Jayant Gupchup, Johns Hopkins Universityhttp:// Research and Roles  Manage data collected by our sensors  Provide online access to data and graphs to scientists   Research – I: Time synchronization and validation of measurements  Research – II: Exploit spatial and temporal correlation to  Fault detection and gap filling  Optimize data collection subsystem

Jayant Gupchup, Johns Hopkins Universityhttp:// Grazor System Available Online Right now!!!

Jayant Gupchup, Johns Hopkins Universityhttp:// Timestamp Validation: Annual Solar Patterns = f (Latitude, Time of Year)

Jayant Gupchup, Johns Hopkins Universityhttp:// Soil Temperature Dataset [noisy + gappy]

Jayant Gupchup, Johns Hopkins Universityhttp:// Robust Reconstruction [Clustering+PCA+Regression]

Jayant Gupchup, Johns Hopkins Universityhttp:// Top 10 Locations

Jayant Gupchup, Johns Hopkins Universityhttp:// Reconstruction Error vs Locations

Jayant Gupchup, Johns Hopkins Universityhttp:// Questions

Jayant Gupchup, Johns Hopkins Universityhttp:// Life Under Your Feet [LUYF] [LUYF] :

Jayant Gupchup, Johns Hopkins Universityhttp:// System Architecture [eScience 2008] [eScience 08] : Microsoft eScience Workshop 2008, Indianapolis

Jayant Gupchup, Johns Hopkins Universityhttp:// “Time Reconstruction: Sundial” [EWSN 09] Length of day (LOD) Noon Local NoonGlobal Noon Lts 1 Gts 1 Lts 2 Gts 2 …… …… Lts n Gts n “Anchor Points” argmax lag Xcorr (LOD lts, LOD gts, lag) [EWSN 09] : European Conference on Wireless Sensor Network 2009, Ireland