In mobile ad hoc networks, many routing protocols use broadcast mechanism to find route whereas one of the wireless network challenges is the bandwidth optimisation. This mechanism increases the control overhead and consumes bandwidth and energy. The overhead penalty increases with the density and the network size. Thus is important to reduce the number of participants in that mechanism. One of...

Individual neighborhoods within large cities can benefit from independent analysis of public data in the context of ongoing efforts to improve the community. Yet existing tools for public data analysis and visualization are often mismatched to community needs, for reasons including geographic granularity that does not correspond to community boundaries, siloed data sets, inaccurate assumptions ...

Ad Hoc network is a collection of wireless mobile hosts forming a temporary network without the aid of any centralized administration, in which individual nodes cooperate by forwarding packets to each other to allow nodes to communicate beyond direct wireless transmission range. The main focal point of the work is to enhance Weighted Clustering Algorithm (WCA) and other similar algorithms like ...

The effect of electrospinning operational parameters on the morphology, surface roughness, and wettability of different compositions of electrospun polystyrene (PS)–aluminum oxide (Al2O3) nanocomposite coatings was investigated using different techniques. For example, a scanning electron microscope (SEM) coupled with an energy dispersive X-ray (EDX) unit, a Fourier transform infrared (FTIR) spe...

The simultaneous extraction of optical navigation measurements from a target celestial body and star images is essential for autonomous optical navigation. Generally, a single optical navigation sensor cannot simultaneously image the target celestial body and stars well-exposed because their irradiance difference is generally large. Multi-sensor integration or complex image processing algorithm...

Poly(chloro-p-xylylene) (PPXC) film has a water contact angle (WCA) of only about 84°. It is necessary to improve its hydrophobicity to prevent liquid water droplets from corroding or electrically shorting metallic circuits of semiconductor devices, sensors, microelectronics, and so on. Herein, we reported a facile approach to improve its surface hydrophobicity by varying surface pattern struct...

Polyethersulfone (PES) films are widely employed in the construction of membranes where there is a desire to make surface more hydrophilic. Therefore, UV photo-oxidation was studied order oxidize PES and increase hydrophilicity. using low pressure mercury lamps emitting both 253.7 184.9 nm radiation were compared with only photons. The modified surfaces characterized X-ray photoelectron spectro...

Water-cycle algorithm based on evaporation rate (ErWCA) is a powerful enhanced version of the water-cycle (WCA) metaheuristics algorithm. ErWCA, like other algorithms, may still fall in sub-optimal region and have slow convergence, especially high-dimensional tasks problems. This paper suggests an ErWCA (EErWCA) version, which embeds local escaping operator (LEO) as internal updating process. a...

Nowadays, the application range of biomass materials is more and extensive. In this work, peanut shell powder was used as raw material. The cellulose nanofibrils extracted from it by chemical mechanical method. Then, using sol-gel method, methyltrimethoxysilane (MTMS) added to suspension modify it. Finally, nano-cellulose superhydrophobic aerogel prepared freeze-drying polydimethylsiloxane (PDM...

This paper presents a novel composite heuristic algorithm for global optimization by organically integrating the merits of water cycle (WCA) and gravitational search (GSA). To effectively reinforce exploration exploitation algorithms reasonably achieve their balance, modified WCA is first put forward to strengthen its performance introducing concept basin, where position solution also considere...