Perceived challenge of walking is a broad term that we use to encompass walking-related anxiety, balance self-efficacy/confidence, and fear of falling.Evidence shows that even after accounting for physical performance capabilities, a higher perceived challenge can cause individuals to self-impose restrictions in walking-related activities.Perceived
In view of problems of small detection range, difficult installation position setting and easy misoperation existed in traditional protection devices for prevention of coal piling wearing tail rope, a protection system for prevention of coal piling wearing tail rope in mine was designed based on two-dimensional laser radar scanning technology and a
This study focuses on the formation of a single-line track in selective laser melting (SLM), based on the powder morphology, size distribution, and characteristics.A chromium-molybdenum-vanadium steel, AISI H13, was used as a metal powder.The relationship between the powder morphology, size distribution, and the powder-bed layer characteristics, su
The persistent slump in crude oil prices on the world market has drastically reduced government revenues, weakened currencies, and threatened growth and development of countries such as Nigeria that are heavily dependent on petroleum as a source of government earnings.Therefore, it has become imperative for the government to look beyond oil, notabl