Teresa Dahlberg

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In this paper, we detail our development of <i>Explorebots</i>--expandable, vision- and sensor-equipped wireless robots built around MICA motes. We developed Explorebots as a dynamic outreach for an NSF-funded Girl Scouts project. We've extended the capabilities of Explorebots to comprise a mobile network experimentation testbed. The testbed will support(More)
The rapid growth of wireless communications has been witnessed from new services and emerging technologies in the past years. As societal dependence on mobile services increases, especially for emergency services, failures that inhibit communications or result in loss of critical data can not be tolerated. This paper discusses the effects of failures and(More)
Research and development on the survivability of networks has largely focused on public switched telecommunications networks and high speed data networks with little attention on the survivability of wireless access networks supporting cellular and PCS communications. This paper provides an overview of the survivability issues in PCS networks with emphasis(More)
Applications and middleware popular in the study of wireless sensor networks (WSNs) often involve monitoring dynamically changing environments. As the complexity and scale of these applications increase, so does the need for effective comparative analysis. Deterministic benchmarks for head-to-head comparisons, as well as stochastic tests modeling the(More)
As product cycles become shorter and the demand for customized products becomes greater, flexibility in production capabilities becomes mandatory. This trend requires manufacturing enterprises to be highly flexible with the ability to timely reallocate manufacturing resources. Wireless communications provides a natural ability to support the flexibility(More)
In this paper, we describe a fuzzy query processing approach to support application development in sensor networks. Using a fuzzy query, an application programmer can provide a linguistic and semantic specification of the desired data, eliminating the need to specify explicit and exact thresholds as part of a query. The returned fuzzy query results are each(More)
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