We provide an in-depth study of applying wireless sensor networks to real-world habitat monitoring. A set system design requirements are developed that cover the hardware nodes, network, and capabilities for remote data access management. architecture is proposed address these monitoring in general, instance seabird nesting environment behavior presented. The currently deployed network consists 32 nodes on a small island off coast Maine streaming useful live onto web. application-driven...

Technological progress in integrated, low-power, CMOS communication devices and sensors makes a rich design space of networked viable. They can be deeply embedded the physical world spread throughout our environment like smart dust. The missing elements are an overall system architecture methodology for systematic advance. To this end, we identify key requirements, develop small device that is representative class, tiny event-driven operating system, show it provides support efficient...

As sensor networks edge closer towards wide-spread deployment, security issues become a central concern. So far, much research has focused on making feasible and useful, not concentrated security.

We present Telos, an ultra low power wireless sensor module (mote) for research and experimentation. Telos is the latest in a line of motes developed by UC Berkeley to enable network (WSN) research. It new mote design built from scratch based on experiences with previous generations. Telos' consists three major goals experimentation: minimal consumption, easy use, increased software hardware robustness. discuss how components are selected integrated order achieve these goals. Using Texas...

Habitat and environmental monitoring is a driving application for wireless sensor networks. We present an analysis of data from second generation networks deployed during the summer autumn 2003. During 4 month deployment, these networks, consisting 150 devices, produced unique datasets both systems biological analysis. This paper focuses on nodal network performance, with emphasis lifetime, reliability, static dynamic aspects single multi-hop compare results collected to expectations set...

We present Telos, an ultra low power wireless sensor module ("mote") for research and experimentation. Telos is the latest in a line of motes developed by UC Berkeley to enable network (WSN) research. It new mote design built from scratch based on experiences with previous generations. Telos' consists three major goals experimentation: minimal consumption, easy use, increased software hardware robustness. discuss how components are selected integrated order achieve these goals. Using Texas...

The wireless sensor network "macroscope" offers the potential to advance science by enabling dense temporal and spatial monitoring of large physical volumes. This paper presents a case study that recorded 44 days in life 70-meter tall redwood tree, at density every 5 minutes time 2 meters space. Each node measured air temperature, relative humidity, photosynthetically active solar radiation. captured detailed picture complex variation dynamics microclimate surrounding coastal tree. describes...

These networks deliver to ecologists data on localized environmental conditions at the scale of individual organisms help settle large-scale land-use issues affecting animals, plants, and people.

We show how the database community's notion of a generic query interface for data aggregation can be applied to ad-hoc networks sensor devices. As has been noted in network literature, is important as reduction tool; networking approaches, however, have focused on application specific solutions, whereas our in-network approach driven by general purpose, SQL-style that execute queries over any type while providing opportunities significant optimization. present variety techniques improve...

We provide an in-depth study of applying wireless sensor networks to real-world habitat monitoring. A set system design requirements are developed that cover the hardware nodes, network, and capabilities for remote data access management. architecture is proposed address these monitoring in general, instance seabird nesting environment behavior presented. The currently deployed network consists 32 nodes on a small island off coast Maine streaming useful live onto web. application-driven...

Technological progress in integrated, low-power, CMOS communication devices and sensors makes a rich design space of networked viable. They can be deeply embedded the physical world spread throughout our environment like smart dust. The missing elements are an overall system architecture methodology for systematic advance. To this end, we identify key requirements, develop small device that is representative class, tiny event-driven operating system, show it provides support efficient...

The wireless sensor network community approached networking abstractions as an open question, allowing answers to emerge with time and experience. Trickle algorithm has become a basic mechanism used in numerous protocols systems. brings nodes eventual consistency quickly efficiently while remaining remarkably robust variations density, topology, dynamics. Instead of flooding packets, uses "polite gossip" policy control send rates so each node hears just enough packets stay consistent. This...

Technological progress in integrated, low-power, CMOS communication devices and sensors makes a rich design space of networked viable. They can be deeply embedded the physical world spread throughout our environment like smart dust. The missing elements are an overall system architecture methodology for systematic advance. To this end, we identify key requirements, develop small device that is representative class, tiny event-driven operating system, show it provides support efficient...

The most important spatial attributes of any cadastral parcel are the coordinates its boundary points, which define extent property rights. derivative boundaries is area parcel, which, in Poland, determined based on points satisfying certain conditions. It essential that data entered into real estate cadastre describing areas parcels sufficiently high quality. For this reason, authors research paper propose a three‐stage assessment quality parcels. first stage involves analysis standardised...