High resolution sampling of physical phenomenon is a prime application of large scale wireless sensor networks (WSNs). With hundreds of nodes deployed over vast tracts of land, monitoring data can now be generated at unprecedented spatiotemporal scales. However, the limited battery life of individual nodes in the network mandates smart ways of collecting this data by maximizing localized proces...

We consider node localization problems in ad hoc wireless networks in which two types of nodes are considered: nodes with self-locating capability like GPS and nodes with no self-locating capability. Our simple algorithm for improving the position accuracy consists of selecting and processing only the nodes that are likely to enhance the position estimation. We focus our approach on defining a ...

introduction: size of axillary lymph nodes can be a predictor for breast abnormalities. the agents in the antiperspirants such as aluminum were observed in the breast biopsy of individual with abnormalities and antiperspirants usage. in this study, the relation between using antiperspirants and the size of axillary lymph nodes were evaluated in iranian women. methods: in this study, 120 women w...

In Opportunistic Networks, autonomous nodes discover, assess and potentially seize opportunities for communication and distributed processing whenever these emerge. In this paper, we consider prerequisites for a successful implementation of such a way of processing in networks that consist mainly of heterogeneous devices. Devices are heterogeneous in size, in abilities, in movement, and in the ...

Decentralized processing algorithms are attractive alternatives to centralized algorithms for target tracking applications in smart sensor networks since they provide the ability to scale, reduce vulnerability, reduce communication, and share processing responsibilities among individual nodes. Sharing the processing responsibilities allows parallel processing of raw data at the individual nodes...

Large-scale Sensor Networks Smart sensor nodes [14, 15] integrate multiple sensors (e.g., temperature, humidity, accelerometers), processing capability (microprocessor connected to the sensors using I2C technology), wireless communications, and a battery power source. Sensor nodes range around a few millimeters or smaller in size [11, 12]. Sensor nodes have low processing, memory and wireless c...

A grid-like environment may be constructed from ad hoc processing devices, including portable battery-powered devices. Battery lifetime is a current limitation here. In this paper we propose policies for minimizing power consumption using voluntary collaboration between the autonomously controlled nodes. We exploit the quadratic relationship between processor clock-speed and power consumption t...

We consider a source that transmits to a receiver by routing the information packets over a communication network and examine rate benefits that finite complexity processing at the intermediate nodes may offer. We show that the processing capabilities of the intermediate nodes affect not only the end-to-end achievable rate, but also the optimal routing strategy. For example, there exist network...