We present data on the vulnerability of a variety of candidate spacecraft electronics to proton and heavy-ion induced single-event effects and proton-induced damage. We also present data on the susceptibility of parts to functional degradation resulting from total ionizing dose at low dose rates (0.003–4.52 rads(Si)/s).
A dense sensor network consisting of passive infrared motion detectors was developed and used to record human activity in hallways and rooms in a large campus building. Algorithms were developed that: (a) automatically determine the topology of the network from the sensor data, so that manual mapping is not required, (b) automatically learn patterns of… (More)
Forecasting the occupancy of buildings can lead to significant improvement of smart heating and cooling systems. Using a sensor network of simple passive infrared motion sensors densely placed throughout a building, we perform data mining to forecast occupancy a short time (<i>i.e</i>., up to 60 minutes) into the future. Our approach is to train a set of… (More)