Empirical Evaluation of Visualizations of Normal Behavioral Models for Supporting Maritime Anomaly Detection

GeoViz: Linking Geovisualization with Spatial Analysis and Modeling, 10-11 March 2011, Hamburg, Germany

Maria Riveiro and G¨oran Falkman

“Many approaches for anomaly detection use statistical based methods that build profiles of normality. In these cases, anomalies are defined as deviations from normal models build from representative data. Detection capabilities based solely on these approaches typically generate high false alarm rates due to the difficulty of creating flawless models. In order to support the comprehension, validation, update and use of such models, our latest work has been devoted to the visualization of normal behavioral models of maritime traffic and their usability evaluation. This paper presents the results of a usability assessment carried out in order to evaluate the ability of previously suggested visualizations to support the detection and identification of anomalous vessel behavior.”

Small-Scale Spatial Analysis of In Situ Sea Temperature throughout a Single Coral Patch Reef

Journal of Marine Biology, Volume 2011

Kelvin D. Gorospe and Stephen A. Karl

“Thermal stress can cause geographically widespread bleaching events, during which corals become decoupled from their symbiotic algae.  Bleaching, however, also can occur on smaller, spatially patchy scales, with corals on the same reef exhibiting varying bleaching responses.  Thus, to investigate fine spatial scale sea temperature variation, temperature loggers were deployed on a 4 m grid on a patch reef in Kāne’ohe Bay, Oahu, Hawai‘i to monitor in situ, benthic temperature every 50 minutes at 85 locations for two years.  Temperature variation on the reef was characterized using several summary indices related to coral thermal stress.  Results show that stable, biologically significant temperature variation indeed exists at small scales and that depth, relative water flow, and substrate cover and type were not significant drivers of this variation.  Instead, finer spatial and temporal scale advection processes at the benthic boundary layer are likely responsible.  The implications for coral ecology and conservation are discussed.”

Spatial Analysis of the Bronze Age Yangfutou Cemetery, Yunnan Province, China

Professor Pochan Chen (Department of Anthropology, National Taiwan University) will present his research on the Bronze Age Yangfutou Cemetery, in the Yunnan Province of China.

The lecture is sponsored by the East Asian Archaeology Forum public lecture series, International Center for East Asian Archaeology and Cultural History (ICEAACH), with funding from the Boston University Humanities Foundation.

Speaker(s): Prof. Pochan Chen (Department of Anthropology, National Taiwan University)

When: Thursday, Apr 7, 2011 at 12:15pm until 1:30pm on Thursday, Apr 7, 2011

Where: 650 Beacon St (Kenmore Square) (Suite 505)

Who: Open to General Public–Admission is free

More Info:  http://www.bu.edu/asianarc/

Contact:

International Center for East Asian Archaeology and Cultural History (ICEAACH)
Robert Murowchick
asianarc@bu.edu
617-358-8000

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