Accurate estimation of the attitude of unmanned aerial vehicles (UAVs) is crucial for their control and displacement. Errors in the attitude estimate may misuse the limited battery energy of UAVs or even cause an accident. For attitude estimation, proprioceptive sensors such as inertial measurement units (IMUs) are widely applied, but they are susceptible to inertial guidance error. With antenn...

The important finding of this study is that in two-thirds of the papers relating to blood pressure published in four prestigious general medical journals one or more of the following were not mentioned: type of equipment used, the diastolic end-point chosen, or the number of readings per measurement. Other pertinent information was also not given. The implications are clear. Firstly, in the int...