The electro-hydrostatic actuator (EHA) is the key component of most electric aircraft, and research on its fault diagnosis technology is of great significance to improve the safety and reliability of aircraft flight.However, traditional fault diagnosis methods only focus on partial failures and cannot completely diagnose the whole EHA system.In thi
Mercury contamination in the Canadian Arctic is a significant concern.Some traditional food sources are contaminated by mercury and pose a health risk to local residents.Media can affect public awareness and opinions of environmental health risks.Therefore, it is Clock important to understand how the risks associated with contaminants are communica
Chordoma is an uncommon tumor , so the metastatic cases generally are given more attention.Various cases with central nervous system involvement, Brushes cutaneous and mandible metastases have been reported.Metastases to bone is noted in literature Bike Units - Adult Trike but metastases to bilateral clavicle is not reported yet to the best of our
Hundreds of thousands of liquid jet nozzles are widely used in controling cooling equipment to accelerate the cooling of hot plates.The holes of these nozzles become clogged or the hole size becomes smaller as foreign substances like grease, scrap, and mud containing cooling water Putting Green are flushed through.In this case, cooling water sprays
When analyzed by standard statistical methods, the time series of the daily return of financial indices appear to behave as Markov random series with no apparent temporal order or memory.This empirical result seems to be counter intuitive since investor are influenced by both short and long term past market behaviors.Consequently much effort has be