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The energy consumption rate for sensors in a wireless sensor network varies greatly based on the protocols the sensors use for communications. The Gossip-Based Sleep Protocol (GSP) implements routing and some MAC functions in an energy conserving manner. The effectiveness of GSP has already been demonstrated via simulation. However, no prototype system has(More)
Experimental studies in wireless sensor networks reveal a region with random packet loss and highly unreliable links. Some studies refer to the region as the Grey Area. This area may affect upper layer protocol performance. Unlike previous studies, our paper presents an experimental study of link performance using three different hardware platforms: one for(More)
We show that there exists a metric with positive scalar curvature on S 2 ×S 1 and a sequence of embedded minimal cylinders that converges to a minimal lamination that, in a neighborhood of a strictly stable 2-sphere, is smooth except at two helicoid-like singularities on the 2-sphere. The construction is inspired by a recent example by D. Hoffman and B.(More)
Research in Wireless Sensor Networks (WSNs) is vast and there are several hardware platforms, many of them compatible with IEEE802.15.4 standard. However, commercial platforms have limited access to modify network parameters in order to test or improve network performance. The paper shows one prototype WSN for temperature monitoring implemented with(More)
Wireless sensor networks which employ a routing protocol from the Flooding family are often assumed to waste a great amount of energy generating duplicate packets [1].Simulations were conducted showing that the assumption is not true for one member of the flooding family, the Gossip-based Sleep Protocol (GSP) [2]. Simulation results show that the(More)
Advisor: Harshavardhan Thippareddi Beef prime rib is a delicacy cooked at low temperatures for long period and extended hot holding prior to consumption. Due to the potential survival and outgrowth of foodborne pathogens, this process may pose a public health risk. Considering an increase in the availability of non-intact beef, the microbial safety of the(More)