Wenzhan Song

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—In response to NASA's announced requirement for Earth hazard monitoring sensor-web technology, a multidisciplinary team involving sensor-network experts (Washington State University), space scientists (JPL), and Earth scientists (USGS Cascade Volcano Observatory (CVO)), is developing a prototype dynamic and scaleable hazard monitoring sensor-web and(More)
—In this paper, we propose a fast and reliable data dissemination protocol Cascades to disseminate data from the sink(base station) to all or a subset of nodes in a data collection sensor network. Cascades makes use of the parent-monitor-children analogy to ensure reliable dissemination. Each node monitors whether or not its children have received the(More)
With the growing number of Wireless Sensor Network (WSN) monitoring systems in outdoor environments, smart sensing capability has attracted great research interests recently: scientists and researchers expect long-term healthy systems running in harsh environments. Because of the environmental damages to less-protected sensors, a sensing component, is(More)
A state-of-the-art sensorweb is a global observation system for varied sensory phenomena from the physical world and the cyber world. This paper presents the architecture, design, and application of a sensorweb service portal called the LiveWeb. This portal has been published on the Internet and is used by researchers, students, and also other communities.(More)
—A Smart Grid is a highly complex cyber-physical electrical power system that uses two-way digital communication and intelligent embedded devices to achieve sensing, control, computation and communication within power network. To validate the functionality, security and reliability of such an system requires the modeling and emulation of both communication(More)
Many real-world applications arising in domains such as large-scale machine learning, wired and wireless networks can be formulated as distributed linear least-squares over a large network. These problems often have their data naturally distributed. For instance applications such as seismic imaging, smart grid have the sensors geographically distributed and(More)
The information technology evolution has greatly changed the world and will continue so. If the Internet is viewed as a circulatory system that connects the world and enables timely information exchanges around the globe, then the natural next-breakthrough is to build an integrated nervous system with it, that senses the world for real-time situation(More)
Distributed Gossip in networks is a well studied and observed problem which can be accomplished using different gossiping styles. This work focusses on the development, analysis and evaluation of a novel in-situ distributed gossip protocol framework design called (INDIGO). A core aspect of INDIGO is its ability to execute on a simulation setup as well as a(More)