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Akademický článek

Physicochemical and thermomechanical performances study for Timahdite sheep wool fibers application in the building's insulation

Autor: Aziza Atbir, Mhamed Taibi, Badr Aouan, Abdelhamid Khabbazi, Omar Ansari, Moha Cherkaoui, Toufik Cherradi

Publikováno v: Scientific Reports, Vol 13, Iss 1, Pp 1-16 (2023)

Abstract The present research focuses on the development and thermomechanical characterization of unfired solid bricks based on clay (white and red) and Timahdite sheep wool, which are local, durable, abundant, and economical materials. As this clay

Externí odkaz: https://doaj.org/article/7434f871212842e08f0ab0a913e2c6ab

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Akademický článek

Directional modulation techniques for secure wireless communication: a comprehensive survey

Autor: Omar Ansari, Muhammad Amin

Publikováno v: EURASIP Journal on Wireless Communications and Networking, Vol 2022, Iss 1, Pp 1-28 (2022)

Abstract Directional Modulation (DM) techniques provide wireless communication security against passive eavesdropping by means of specific physical layer characteristics. The original symbol constellations are transmitted along pre-specified spatial

Externí odkaz: https://doaj.org/article/b18ca43302794b17ac1402e87cb01ed4

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Akademický článek

Inter-Subset Hamming Distance Maximization for Enhancing the Physical Layer Security of Antenna Subset Modulation

Autor: Omar Ansari, Muhammad Amin, Moazam Maqsood, Abdul Rahman Muhammad Maud, Muddassar Farooq

Publikováno v: IEEE Access, Vol 8, Pp 221513-221524 (2020)

In this article, a novel antenna subset selection technique for enhancing the Physical Layer Randomness (PLR) of Antenna Subset Modulation (ASM) has been proposed. Hamming Distance Optimized Antenna Subset Selection (HD-OASS) minimizes the correlatio

Externí odkaz: https://doaj.org/article/f3469911892647d78ba0b1bfc47aa096

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Akademický článek

Thermal performance of clay-straw wall incorporating phase change materials in Errachidia city (South Eastern Morocco): A simulation approach

Autor: Zaineb Ben Zaid, Amine Tilioua, Ibtissam Lamaamar, Omar Ansari, Moulay Ahmed Hamdi Alaoui

Publikováno v: Case Studies in Construction Materials, Vol 15, Iss , Pp e00786- (2021)

The objective of this new study is to integrate a Phase Change Material (PCM) in a clay-straw wall to reduce the energy consumption of buildings in Saharan regions (Presented by the city of Errachidia in Morocco). The underlying idea is to fully expl

Externí odkaz: https://doaj.org/article/07cfd50fcb804248b5b582acbac81eb6

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Akademický článek

Analyzing Physical Layer Security of Antenna Subset Modulation as Block Encryption Ciphers

Autor: Omar Ansari, Muhammad Amin, Abrar Ahmad

Publikováno v: IEEE Access, Vol 7, Pp 185063-185075 (2019)

In this paper, a novel framework for analyzing Physical Layer Security (PLS) of Directional Modulation (DM) techniques has been introduced. The proposed framework maps the concepts of PLS techniques to cryptographic techniques, enabling the analysis

Externí odkaz: https://doaj.org/article/6dbff0dfc96348949358921b400568a9

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Akademický článek

The Importance of Distance between Photovoltaic Power Stations for Clear Accuracy of Short-Term Photovoltaic Power Forecasting

Autor: Abdelhakim El hendouzi, Abdennaser Bourouhou, Omar Ansari

Publikováno v: Journal of Electrical and Computer Engineering, Vol 2020 (2020)

The current research paper deals with the worldwide problem of photovoltaic (PV) power forecasting by this innovative contribution in short-term PV power forecasting time horizon based on classification methods and nonlinear autoregressive with exoge

Externí odkaz: https://doaj.org/article/0de831719d0b44d4bb02027b0f96bb56

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