An infrastructure comprised of prototype Cyber Crumbs was developed and evaluated in an NIH SBIR Phase 1 study. The goal was to develop a means of “salting” indoor structures with a network of inexpensive information “crumbs” to assist persons in easily orientating to indoor structures and efficiently navigating through them to desired locations. Infra-Red (IR) communications between Crumbs and...

MOOSE Crossing is a text-based virtual reality environment (or “MUD”) designed to be a constructionist learning environment for children ages 8 to 12. We performed a portfolio-style assessment of children’s programming accomplishments in this environment. Analysis of the data reveals uneven levels of achievement—some children accomplish a great deal but the majority learn little. We believe thi...

We present applications to enhance communication for an organization using Sociometric badges. The badge collects the voice, motion, and location data of the wearer. We use this data to determine the amount of face-to-face interaction, conversational time, physical activity levels, and physical proximity to other people. With the data collected from each individual we analyze the collective beh...

Excessive nitrogen (N) use in agriculture, industry, and household waste leads to widespread N release throughout the environment, causing eutrophication both freshwater coastal areas. To better understand N-induced other N-use-related environmental impacts at local scale, improvements spatial resolution of life cycle impact assessment measures are required. Here, we present a method estimate g...

There is still much debate about the release of bisphenol-A (BPA) from dental materials. Therefore, this study aimed to quantify BPA present as an impurity in both BPA-based and non-BPA-based monomers evaluate whether these may degrade upon salivary, bacterial, chemical challenges. was determined three different amounts (1, 2, 3 ?mol) each monomer (TEGDMA, UDMA, mUDMA, BisGMA, BisEMA-3, -6, -10...