— A sensor network is described which obtains data from nodes on and inside glaciers. Power management through scheduling and selective control is used to allow a lifetime of at least one year on batteries. Radio links in the glacier and across 2.5km distances are used for data and commands. The prototype system was installed in Norway in 2003 and this… (More)
This paper reports on the implementation, design and results from GlacsWeb, an environmental sensor network for glaciers installed in Summer 2004 at Briksdalsbreen, Norway. The importance of design factors that influenced the development of the overall system, its general architecture and communication systems are highlighted.
The interaction of plant genotype and herbivory decelerate leaf litter decomposition and alter nutrient dynamics. Á/ Oikos 110: 133 Á/145. We examined how plant genetic variation and a common herbivore (the leaf-galling aphid, Pemphigus betae) influenced leaf litter quality, decomposition, and nutrient dynamics in a dominant riparian tree (Populus spp.).… (More)
A wireless sensor network has been designed and deployed to gather data from nodes deployed inside glaciers. This paper describes the solutions to power management, radio communications and other challenges faced in the system together with a discussion of the performance of the final system. 18 months of data have now been received, which provide an… (More)
The behaviour of glaciers is an area in which only limited research has been carried out due to the difficulties of monitoring sub-glacial movements. The authors believe that this can be addressed by the deployment of a wireless sensor network, consisting of heterogeneous sensors to instrument this activity. By deploying a sensor network measurements can be… (More)
In preclinical dentistry, precise terminal knowledge of results (KR) typically is provided by an instructor when the student has completed all or a portion of a preparation. A contemporary model of psychomotor learning implies that performance can be improved if continual precise KR also is available. This investigation compared a traditional instructional… (More)
NOTICE: This is the authors' version of a work that was accepted for publication in Computers & Geosciences. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was… (More)
Previous literature shows that operative laboratory performance can be significantly improved through leadup training where students complete simulated preparations in plastic blocks. Since the task requirements of most fixed prosthodontic preparations seem similar to those of operative dentistry, it may be hypothesized that leadup training utilizing… (More)