Facing Facts: Facial Injuries from Stand-up Electric Scooters

Intelligent Control of Electric Scooters

Most of the present day electric scooters are equipped with a voltage-driven DC motor powered by four 12-volt leadacid batteries and a hand-lever accelerator operated by the rider to control their speed. Because of the nonlinear battery discharge characteristics and different driving behaviors of riders, it is not easy to tell how much electric power remaining in the battery and how far the ele...

Electric drives for light e-scooters

In the next years is expected an important rise in sales of electrical scooters in the entire world but especially in China. In order to address this challenge the electric scooter industry has to be more competitive in the transportation market and therefore important improvements, in terms of energy density and costs, have to be done in the electric storage system and in the electric propulsi...

Facing the Facts

This paper has two simple messages: 1. Remove overconfidence in order to make quality visible; 2. This requires earlier and more frequent review than is usually done. 'If debugging is the process of removing bugs, then programming must be the process of putting them in' Anon. Initial questions (answers later) 1) Are defects good or bad? 2) If your reviewer tells that they found no defects in a ...

Facing the facts.

Facing facts about deliberate practice

More than 20 years ago, Ericsson and colleagues proposed that “individual differences in ultimate performance can largely be accounted for by differential amounts of past and current levels of practice” (Ericsson et al., 1993, p. 392). We empirically tested this claim through a metaanalysis of studies of music and chess (Hambrick et al., 2014). The claim was not supported. Deliberate practice a...