One of the most important components an aircraft is landing gear. In today`s modern gears, mostly oleo-pneumatic shock struts are used. Analytically, gear can be modeled as a mass-spring-damper system. The model used in study included such strut, tire and wheel. Furthermore, tapered metering pin was added to order control area orifice by which hydraulic oil flows during act impact force. Landin...

We perform GRMHD and RMHD simulations of weakly highly magnetized gamma-ray burst (GRB) jets propagating in binary neutron star (BNS) merger ejecta. Using the simulations, we first find that mixing between jet cocoon, which is present all types jets, inhibits formation subphotospheric collisionless shocks. However, show a mild magnetization may lead to subshocks allow efficient proton accelerat...

Based on the WZ method, some series acceleration formulas are given. These formulas allow us to write down an infinite family of parametrized identities from any given identity of WZ type. Further, this family, in the case of the Zeta function, gives rise to many accelerated expressions for ζ(3). AMS Subject Classification: Primary 05A We recall [Z] that a discrete function A(n,k) is called Hyp...

preventive maintenance scheduling is to perform a series of tasks that prevents or minimizes production breakdowns and improves the reliability. mathematical models have been developed to solve the preventive maintenance scheduling problem. there are several limitations in the prior work in this area of research. craft combinations are assumed to be given. the craft combination problem concerns...

The migration of profile sub-peaks identified in time-monitored optical emission lines of Wolf-Rayet (WR) star spectra provides a direct diagnostic of the dynamics of their stellar winds via a measured ∆vLOS/∆t, a line-of-sight velocity change per unit time. Inferring the associated wind acceleration scale from such an apparent acceleration then relies on the adopted intrinsic velocity of the w...

Introduction The inclusion of sport-specific constraints in resistance training promotes the development player abilities an integrated way, which maximises effectiveness adaptations induced by training. Considering that perceptual-cognitive play a fundamental role football, decision making could be introduced to enhance cognitive similarity tasks sport actions. However, it is unknown how as co...