In today's smart world, the Internet of Things (IoT) offers a very large scale technologies and use cases. An IoT system comprises huge amount low-power network elements, sensors, devices connected to each other. For these devices, it is important have sufficient level energy resource for communication receive software/firmware updates periodically. this aspect, wireless power transfer popular ...

In human and animal groups, social interactions often rely on the transmission of information via visual observation behavior others. These are governed by laws physics sensory limits. Individuals appear smaller when far away thus become harder to detect visually, while close neighbors tend occlude large areas field block out with individuals behind them. Here, we systematically study effect a ...