Auto-ID Laboratory: Recent submissions

Now showing items 10-12 of 45

    • Stable arrangements of mobile sensors for sampling physical fields 

      Deshpande, Ajay A.; Sarma, Sanjay Emani; Kumar, Sumeet, Ph. D. Massachusetts Institute of Technology (American Automatic Control Council/IEEE, 2012-06)
      Today's wireless sensor nodes can be easily attached to mobile platforms such as robots, cars and cell phones enabling pervasive sensing of physical fields (say of temperature, vibrations, air quality and chemicals). We ...

    • A three-dimensional self-supporting low loss microwave lens with a negative refractive index 

      Ehrenberg, Isaac Mayer; Sarma, Sanjay Emani; Wu, Bae-Ian (American Institute of Physics, 2012-10)
      Demonstrations of focusing with metamaterial lenses have predominantly featured two dimensional structures or stacks of planar elements, both limited by losses which hinder realized gain near the focal region. In this ...

    • Performance assessment of XACML authorizations for Supply Chain Traceability Web Services 

      Pardal, Miguel L.; Harrison, Mark; Sarma, Sanjay Emani; Marques, Jose Alves (Institute of Electrical and Electronics Engineers (IEEE), 2012-11)
      Service-Oriented Architecture (SOA) and Web Services (WS) offer advanced flexibility and interoperability capabilities. However they imply significant performance overheads that need to be carefully considered. Supply Chain ...