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Wyszukujesz frazę "Ahmed, Yasmeen" wg kryterium: Autor


Wyświetlanie 1-2 z 2
Tytuł:
Basic Principles and Mechanical Considerations of Satellites: A Short Review
Autorzy:
Reda, Reham
Ahmed, Yasmeen
Magdy, Islam
Nabil, Hossam
Khamis, Mennatullah
Refaey, Ahmed
Eldabaa, Nada
Abo Elmagd, Manar
Abo Lila, Mohamed
Ergawy, Hady
Elgarf, Alhussein
Abed, Gerges
Powiązania:
https://bibliotekanauki.pl/articles/36827035.pdf
Data publikacji:
2023
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Lotnictwa
Tematy:
principles of satellites
primary structure
isogrid structure
honeycomb structure
mechanical load analysis
assembly
integration
testing
Opis:
Satellites are used for navigation, communication, oceanography, astronomy, etc.. Satellites come in a diversity of sizes and forms. Depending on the satellite’s mission, different subsystems are used. These subsystems are installed inside a housing to protect them from the space environment. This housing, which is also known as the satellite primary structure or mechanical structure, is made of durable materials that can endure severe conditions during launch and in the orbit. The optimisation of satellite mass is crucial right now since satellites are losing mass every day to reduce the cost of manufacturing and launching. This review first introduces an overview of the satellite classifications and subsystems. Then, the different types of mechanical load analysis the satellite subjects itself to are demonstrated. The advanced approaches for promoting the performance of the mechanical structures of satellites are explored, with a spotlight on the effect of the optimisation parameters of isogrid and honeycomb sandwich structures on the mechanical performance of the satellite primary structure. The assembly, integration and testing (AIT) of the small satellite are briefly presented. Finally, the important potential designs to improve the mechanical performance of the satellite primary structure and the challenges of further research are summarised.
Źródło:
Transactions on Aerospace Research; 2023, 3 (272); 40-54
0509-6669
2545-2835
Pojawia się w:
Transactions on Aerospace Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
THE SCOUT METHOD PROTECTS THE PERCEPTION AND WORKING MEMORY OF OUR YOUNG PEOPLE AGAINST THE NEGATIVE INFLUENCE OF SOCIAL NETWORKS
Autorzy:
Louragli, Ismail
Taalab, Yasmeen M
Aboussaleh, Youssef
Khadmaoui, Abderrazak
Bikri, Samir
Hafid, Afaf
Benmhammed, Hajar
Touil, Driss
Hakim, Harchaoui
Ahami, Ahmed
Powiązania:
https://bibliotekanauki.pl/articles/2137933.pdf
Data publikacji:
2020-07-08
Wydawca:
Fundacja Edukacji Medycznej, Promocji Zdrowia, Sztuki i Kultury Ars Medica
Tematy:
addiction
internet
smartphone
youth
Opis:
Social networks are effective and easy-to-use means of communication in the modern age technology. They remarkably influence the young users’ behavior being so entranced in such a virtual world which would easily develop into addiction. In this study we aim to measure the impact of addiction to Facebook on perception and working memory comparing two groups of young people, and how to protect scouting young people against this attachment or addiction. The study was carried out in the national center of scouting of Morocco at Ibn Tofail University on 53 master students with an average age of 24.45 years and 50 young scout leaders of Hassania Marocain scouting, who have an average age of 24.06. The educational level of these young people is between the 1st year of higher studies and the master degree. Digital test of complex Rey-Osterrieth figure and a Facebook addiction test questionnaire were used. The comparison of the means of attachment to Facebook between the two studied groups using T-test showed significant result (t = -2.510; P = .014 <0.05) with scout leaders demonstrated higher average of attachment to Facebook than that detected by master students. The results showed a statistically significant negative correlation between the hours consumed per day on Facebook and the perception and working memory. The perception of young Scout leaders is better than that of master students. We concluded that attachment to social networks influences working memory and perception, while the Scout method would serve as a new remedy for this scourge.
Źródło:
Acta Neuropsychologica; 2020, 18(3); 327-337
1730-7503
2084-4298
Pojawia się w:
Acta Neuropsychologica
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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