Zobrazeno 1 - 10
of 50
pro vyhledávání: '"Emmanuel Kofi Akowuah"'
Publikováno v:
The Journal of Engineering, Vol 2023, Iss 12, Pp n/a-n/a (2023)
Abstract Capacity crunch has become critical in recent years as commercial communication systems approach their theoretical data rate limits. This work presents a low‐complexity digital backpropagation (DBP) implementation approach based on step si
Externí odkaz:
https://doaj.org/article/1f1a56cb3dea43eeab014af188fff1fe
Publikováno v:
Journal of Electrical Systems and Information Technology, Vol 10, Iss 1, Pp 1-20 (2023)
Abstract This work presents photonic crystal fibres made up of four hexagonal shape of four rings. Four structures have been designed and configured. The structures show improvement in optical properties consecutively to achieve the optimum configura
Externí odkaz:
https://doaj.org/article/09e5a648e56d447893a3ba7a06539b92
Publikováno v:
Results in Optics, Vol 12, Iss , Pp 100488- (2023)
This paper proposes a Hexagonal Circular Photonic Crystal Fiber (HC-PCF) with uniform tiny air holes around the core, obtaining ultra-high negative dispersion, high Birefringence and low confinement loss. The modal properties of the HC-PCF are invest
Externí odkaz:
https://doaj.org/article/aab36462037c45079e489f97959dc941
Publikováno v:
Results in Optics, Vol 12, Iss , Pp 100432- (2023)
This paper presents the design and numerical analysis of a circular photonic crystal fiber (PCF) biosensor based on surface plasmon resonance (SPR) for aqueous environments. The proposed biosensor has a geometrical design that uses the cladding at th
Externí odkaz:
https://doaj.org/article/fb37dc9b419843c1b31b9fcfec2d9eae
Publikováno v:
Machine Learning with Applications, Vol 12, Iss , Pp 100458- (2023)
Electricity ranks among the world’s most plundered commodities. The fraudulent act of acquiring electrical power without paying for it is termed electricity theft. Electricity theft is captured in power distribution systems as non-technical losses
Externí odkaz:
https://doaj.org/article/c7a43322bfe14d099f2317b82ec8981e
Publikováno v:
International Journal of Optics, Vol 2023 (2023)
This paper presents a highly negative dispersion-compensating photonic crystal fiber (DC-PCF) with multiple zero dispersion wavelengths (ZDWs) within the telecommunication bands. The multiple ZDWs of the PCF may lead to high spectral densities than t
Externí odkaz:
https://doaj.org/article/152e7884a216420b8e9089642ddd2566
Publikováno v:
Results in Optics, Vol 9, Iss , Pp 100325- (2022)
In this work, we report for the first time, a simplex index guiding circular PCF (CPCF) structure operating from 1350 nm to 1650 nm wavelength, which exhibits a highly negative dispersion of −13686.5 ps/(nm-km) at the telecommunication wavelength o
Externí odkaz:
https://doaj.org/article/e0862e446ac8468f875a766847358382
Publikováno v:
International Journal of Optics, Vol 2022 (2022)
This paper presents a single-polarization filter based on PCF with plasmonic layers of gold and indium tin oxide (ITO). The plasmonic materials are metallic gold and ITO coated on the inner walls of two extra-large vertically arranged air holes. The
Externí odkaz:
https://doaj.org/article/e7b9842caa3b4575b2b7e53f9368fb68
Autor:
Theresa-Samuelle Adjaidoo, Emmanuel Kofi Akowuah, Daniel Atuah Obeng, Emmanuel Dzisi, Williams Ackaah
Publikováno v:
Scientific African, Vol 13, Iss , Pp e00842- (2021)
A novel method for estimating the passenger densities of minivan taxis popularly known as Trotros in Ghana is proposed. A smartphone is used to collect time, location and velocity data from groups of passengers travelling in parts of the Kumasi Metro
Externí odkaz:
https://doaj.org/article/7e740034b92c44b6b63d8c98694cd43d
Publikováno v:
Scientific African, Vol 12, Iss , Pp e00749- (2021)
In this paper, the random departure of intercity public transport buses in Ghana which is influenced by the arrival patterns of passengers is shaped into a deterministic one with regular departure intervals based on the dynamic rate leaky bucket algo
Externí odkaz:
https://doaj.org/article/38dd4009ae5542cfb4fb8323a6235fa5