Over a 3-week period, overnight insulin delivery was directed by a closed-loop system, and on another 3-week period sensor-augmented therapy was applied.
The permanent stations include 1-Hz short-period sensors operated by Hi-net/NIED and Tohoku University.
Each array contained six vertical short-period sensors (1-Hz corner frequency) with one three-component L4C sensor at the center.
The temporary stations, which we call the Naruko array, comprise short-period sensors with a natural frequency of 2 Hz and are operated by Tohoku University.
Station ROPW was equipped with a Guralp CMG-3T broadband seismometer (natural period 30 s), and the other three stations were equipped with short-period sensors (natural period 1 s) with damping constants of 0.5 (V.ONTA, V.ONTN) and 0.7 (NU.NGR1).
We also include data from a temporary network of 16 short-period sensors (1-Hz corner frequency) installed in May 2013 by the Karlsruhe Institute of Technology and Ecole et Observatoire des Sciences de la Terre of Strasbourg to densify the permanent network around the site of Rittershoffen (purple network, Figure 1; Gaucher et al. 2013) during stimulation of the GRT1 well.
The reason is that the duty cycle yields a notable increase of communication delay, beside a reduction of energy consumption, due to the periodic sleeping periods of sensor nodes.
Scheduling is done according to the remaining life period of sensor nodes.
After a 20-day storage period, the sensor retained 93% of its initial current response, providing the acceptable stability.
Here we determine cracks monitored show a small magnitude of deterioration over the initial 9-month period after sensor installation, suggesting that repair is not required.
During this period, the sensor node may: (1) generate packets according to a Poisson process at a rate of λ; (2) relay packets coming from other sensors in accordance to a Poisson process at a rate of λ E; and (3) process (transmit or relay) data packets with random exponential time with a mean of 1/μ.
