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Table 1 Nomenclature

From: Toward green computing in wireless sensor networks: prediction-oriented distributed clustering for non-uniform node distribution

Symbol Description
n Number of sensors
M Length of the region of interest
ETx(l, d) Transmission energy consumption for l bits and d distance
φ Constant energy by electronic
α and β Amount of energy per bit dissipated in the transmitter amplifier
d(i, j) distance between sensor i and sensor j
ERx(l) Receiving energy consumption for l bits
si ith sensor
Eia Average residual energy of ith sensor
Eiac Average energy consumption of ith sensor
ti Waiting time
T2 Time duration for cluster head competition activity
T1 Time duration for information gathering
T3 Time duration for redundancy and activation
T4 Time duration for cluster formation