Abstract This paper conducts a comparative simulation for different structural layout schemes of the new G100S axial flow fan, with motor position and its supporting guide vane as main modification direction, while fan length tongue angle are appropriately adjusted according to position. CFD analysis calculation used compare study performance axial-flow fan. The results show that rear motor, ai...

As the aspect ratio of the devices shrinks down, the power supply voltage should be reduced to meet low power requirements, and the threshold voltage should also be reduced to achieve high performance. This, however, leads to exponential increase in leakage current; hence the circuit’s reliability is also affected. A new domino circuit is proposed with reduced power and lower leakage for wide f...

designing FIR fan filters suitable for the multibeam forming network of the wideband beamspace adaptive array. Characteristics were approximated through the combination of spectral transformation and the window method so that those beam patterns that included the sidelobe characteristics of the resulting fan filters were virtually frequency independent. Using the fan filters designed by the pro...

A vertical axis wind turbine (VAWT) was positioned at the discharge outlet of a cooling tower electricity generator. To avoid a negative impact on the performance of the cooling tower and to optimize the turbine performance, the determination of the VAWT position in the discharge wind stream was conducted by experiment. The preferable VAWT position is where the higher wind velocity matches the ...

Even though microfluidics has been successfully used in minimizing complicated and onerous processes, the pumping and tubing systems used with it are yet undeveloped and need immediate development. The present study developed a fluttering bar-driven micropump, mounted on a polydimethylsiloxane microfluidic system. The pump consists of a rectangular ferromagnetic bar and a fan-shaped chamber wit...

Rotating fan shaft system was investigated experimentally and theoretically to study its dynamic performance. The type of oil used for the bearing taken in consideration during experimental program .Three types were used, SAE 40, 50 degraded oil. During experiments, blades stagger angle changed through angles (20˚, 30˚, 40˚, 50˚). rotational speed also range (0-3000 rpm). All these parameters h...

A learning procedure, called back-propagation, for layered networks of deterministic, neuron-like units has been described previously. The ability of the procedure automatically to discover useful internal representations makes it a powerful tool for attacking difficult problems like speech recognition. This paper describes further research on the learning procedure and presents an example in w...

Recent years have witnessed promising results of face detection using deep learning, especially for the family of region-based convolutional neural networks (R-CNN) methods and their variants. Despite making remarkable progresses, face detection in the wild remains an open research challenge especially when detecting faces at vastly different scales and characteristics. In this paper, we propos...

Introduction: The increase of transistor speed in CMOS technologies has been reached mainly by scaling the gate length of the MOS transistors. For the most advanced technologies, gate lengths down to 40 nm with an ft of 243 GHz [1] have been reported. This allows performances comparable to expensive III-V technologies based on GaAs or InP and in addition the potential for very large scale integ...

The coolant temperature of internal combustion engines can be regulated effectively by advanced thermal management systems that feature multiple computer controlled servomotor actuators (i.e., a variable position smart valve, variable speed electric water pump, variable speed electric radiator fan). When the components of the advanced thermal management system function harmoniously, desired the...