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—Power aware sensor networks has been an active area of research in the last decade and a lot of solutions have been proposed for maximizing the lifetime of a sensor network. However, an underlying assumption in most of the existing work is that the performance of a sensor remains the same throughout its lifetime, which is not always true. In this paper, we(More)
— This paper concerns the problem of minimizing the sum of motion energy and communication energy in a network of mobile robots. The robotic network is charged with the task of transmitting sensor information from a given object to a remote station, and it has to arrange itself in a serial (tandem) configuration for point-to-point transmission, where each(More)
In this paper we investigate how power consumption affects mobility-based coordination algorithms for multi-robot systems by explicitly coupling the control laws to the available power levels. In particular, we will consider a sensor network comprising of mobile sensors which use omni directional RF or radar based antennas for communication, with a(More)
— In this paper we connect the power consumed by agents in a network to how much they move. In other words, by moving around, the agents' power levels decrease, which in turn impacts the range at which they can sense/communicate with neighboring agents. This work constitutes the first, explicit connection between mobility and power consumption from the(More)
— In this paper, we address the issue of activity scheduling of sensors in heterogeneous wireless sensor and actor networks (WSANs), thereby proposing an energy-efficient data collection scheme in such networks. In order to extend the lifetime of heterogeneous WSANs, sensors are activated and deactivated under certain constraints throughout the network(More)
Over the past decade, radiation-degraded polysaccharides have been used as regulators of growth and development of plants in several crop plants. In quest of the possible reasons of previously established growth-promotion activity of irradiated sodium alginate (ISA), structural parameters of irradiated and un-irradiated sodium alginate were analysed using(More)