We report the serendipitous discovery of a late-type giant star that exhibited smooth, eclipse-like drop in flux to depth 97 per cent. Minimum occurred April 2012 and total event duration was few hundred days. Light curves V, I K$_s$ from Optical Gravitational Lensing Experiment VISTA Variables Via Lactea surveys show remarkably achromatic event. During 17 years observational coverage this sour...

Intelligent reflecting surface (IRS) is a promising technology for achieving spectrum and energy-efficient wireless networks cost-effectively. Most existing works on IRS have focused exploiting to enhance the performance of communication or information transmission (WIT), while its potential boosting efficiency radio frequency (RF) energy (WET) still remains largely open. Although IRS-aided WET...

In the wireless powered communication network (WPCN), deployed nodes that harvest energy from power station (PS) and then transmit data to access point (AP) may waste information transmission (WIT) opportunities due suffered faults. Confronting this dilemma, we propose a novel metric robustness, defined as number of available for WIT, evaluate its impact on throughput. To optimize tradeoff betw...

We introduce an R package BDgraph which performs Bayesian structure learning in high-dimensional graphical models with either continuous or discrete variables. The package efficiently implements recent improvements in the Bayesian literature, including Mohammadi and Wit (2015b) and Mohammadi, Abegaz Yazew, van den Heuvel, and Wit (2015). The core of the BDgraph package consists of two main MCMC...

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