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Heartbeat of a nest: Using imagers as biological sensors
Teresa Ko, Shaun Ahmadian, John Hicks, Mohammad Rahimi, Deborah Estrin, Stefano Soatto, Sharon Coe, Michael P. Hamilton
Article No.: 19
We present a scalable end-to-end system for vision-based monitoring of natural environments, and illustrate its use for the analysis of avian nesting cycles. Our system enables automated analysis of thousands of images, where manual processing...
On boundary recognition without location information in wireless sensor networks
Olga Saukh, Robert Sauter, Matthias Gauger, Pedro José Marrón
Article No.: 20
Boundary recognition is an important and challenging issue in wireless sensor networks when no coordinates or distances are available. The distinction between inner and boundary nodes of the network can provide valuable knowledge to a broad...
Dynamic sleep time control in wireless sensor networks
Xu Ning, Christos G. Cassandras
Article No.: 21
Idle listening is a major source of energy waste in wireless sensor networks. It can be reduced through Low-Power Listening (LPL) techniques in which a node is allowed to sleep for a significant amount of time. In contrast to conventional fixed...
Energy-efficient data gathering in wireless sensor networks with asynchronous sampling
Jing Wang, Yonghe Liu, Sajal K. Das
Article No.: 22
A low sampling rate leads to reduced congestion and hence energy consumption in the resource-constrained wireless sensor networks. In this article, we propose asynchronous sampling that shifts the sampling time instances of sensor nodes from each...
Sensor faults: Detection methods and prevalence in real-world datasets
Abhishek B. Sharma, Leana Golubchik, Ramesh Govindan
Article No.: 23
Various sensor network measurement studies have reported instances of transient faults in sensor readings. In this work, we seek to answer a simple question: How often are such faults observed in real deployments? We focus on three types of...
Energy-driven distribution of signal processing applications across wireless sensor networks
Chung-Ching Shen, William L. Plishker, Dong-Ik Ko, Shuvra S. Bhattacharyya, Neil Goldsman
Article No.: 24
Wireless sensor network (WSN) applications have been studied extensively in recent years. Such applications involve resource-limited embedded sensor nodes that have small size and low power requirements. Based on the need for extended network...
Dynamic multiroot, multiquery processing based on data sharing in sensor networks
Zhiguo Zhang, Ajay D. Kshemkalyani, Sol M. Shatz
Article No.: 25
Applications that exploit the capabilities of sensor networks have triggered significant research on query processing in sensor systems. Energy constraints make optimizing query processing particularly important. This article addresses multiroot,...
Near-lifetime-optimal data collection in wireless sensor networks via spatio-temporal load balancing
Huang Lee, Abtin Keshavarzian, Hamid Aghajan
Article No.: 26
In wireless sensor networks, periodic data collection appears in many applications. During data collection, messages from sensor nodes are periodically collected and sent back to a set of base stations for processing. In this article, we present...
A utility-based adaptive sensing and multihop communication protocol for wireless sensor networks
Paritosh Padhy, Rajdeep K. Dash, Kirk Martinez, Nicholas R. Jennings
Article No.: 27
This article reports on the development of a utility-based mechanism for managing sensing and communication in cooperative multisensor networks. The specific application on which we illustrate our mechanism is that of GlacsWeb. This is a deployed...