This work presents a novel bird-shaped broadband piezoelectric energy harvester based on a two-DOF crossed beam for low-frequency environmental vibrations.The harvester features a cantilever mounted on a double-hinged beam, whose rotating motions effectively diminish its natural frequencies.Numerical simulation based Snoring on the finite element m
The centrifugal pump is the workhorse of many industrial and domestic applications, such as water supply, wastewater treatment and heating.While modern pumps are reliable, their unexpected failures may jeopardise safety or lead to significant financial losses.Consequently, there is a strong demand for early fault diagnosis, detection and predictive
Global cooperation is urgently needed to prevent risks of world-wide extreme events and disasters for sustainable development.In human societies, however, there exists bias Backpack toward interacting with partners with similar characteristics, but not contributing globally.We study how complex interactive behaviors evolve under risks through propo
Medium-voltage Upholstered Full Bed distribution systems (MVDSs) mainly consist of a feeder head, lines, distribution transformers, and the equivalent load or power supply interfaced with the distribution transformers.The information of such load or power supply can be measured via the three-wattmeter method (THM) and the two-wattmeter method (TWM)