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The data placement strategy is an important issue in the scientific workflows which is devoted to reducing the data movements while placing datasets in a few data centers according to the data centers' storage capacity and the data dependency. The data placement is proved to be a NP hard problem, and several methods for this problem like K-means clustering algorithm are presented in the literatures...
In this paper, we propose an extended reference model and two novel Sum-of-Sinusoids (SoS) models (statistical and deterministic simulation models) propagation models considering the Rician K-factor and vehicle speed ratio in Vehicular Ad Hoc Networks (VANETs). Our models consider comprehensive scene of wave propagation in VANETs, including infrastructure-to-vehicle (I2V) channels with a LOS or NLOS...
Due to vehicle mobility and complex radio environment in urban, accurate estimation of packet loss rate(PLR) in vehicular wireless network is a challenge. In this paper, the statistics of PLR via distance are obtained using a large amount of on-road vehicular measurements in Wuhan City, China. By observing the statistical properties of the measured data, we propose a doppler spectrum function to describe...
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