Results 11 to 20 of about 3,567 (243)

Optimal control models of Einstein’s field equations [PDF]

open access: yesERU Research Journal, 2023
It is shown that some problems of Einstein’s field equations of the theory of General Relativity can be modeled as optimal control problems. The advantages of adopting such an approach are explained. As a demonstration of this interdisciplinary research,
Moutaz Ramadan, Salah Haggag
doaj   +1 more source

Mind map exhibitions as a source of visual information: An exploratory study

open access: yesCybrarians Journal, 2021
The visual representation of human knowledge is one of the best methods used in the educational process, training and work, and the use of mind maps is one of the tools of visual representation of human knowledge, as it is one of the tools of ...
Ahmed Saleh
doaj   +1 more source

The Doctrines of Triangles: A History of Modern Trigonometry by Glen Van Brummelen

open access: yesAestimatio, 2023
: The Doctrine of Triangles is the second half of Glen Van Brummelen’s history of trigonometry. The first part, The Mathematics of the Heavens and the Earth [Van Brummelen 2009] dealt with the early history of trigonometry, from “precursors” in ancient ...
John Hannah
doaj   +1 more source

An efficient deep learning model for brain tumour detection with privacy preservation

open access: yesCAAI Transactions on Intelligence Technology, EarlyView., 2023
Abstract Internet of medical things (IoMT) is becoming more prevalent in healthcare applications as a result of current AI advancements, helping to improve our quality of life and ensure a sustainable health system. IoMT systems with cutting‐edge scientific capabilities are capable of detecting, transmitting, learning and reasoning.
Mujeeb Ur Rehman   +8 more
wiley   +1 more source

مهارات التنظيم الذاتي والمهارات الحياتية لحل المشكلات الرياضية لدى معلمي الرياضيات بالمرحلة الابتدائية وتلاميذهم بمدرستي المصرية اليابانية والرسمية للغات في ضوء رؤية مصر 2030م Self-Regulation and Life Skills for Solving Mathematical Problems among Primary School Mathematics Teachers and Their Pupils at the Egyptian Japanese and Official Languag [PDF]

open access: yesمجلة تربويات الرياضيات
هدف البحث إلى التعرف على مهارات التنظيم الذاتي والمهارات الحياتية لحل المشكلات الرياضية لدى معلمي الرياضيات بالمرحلة الابتدائية وتلاميذهم بمدرستي المصرية اليابانية والرسمية للغات في ضوء رؤية مصر 2030م ، واتبع البحث المنهج الوصفي التحليلي حيث تم تطبيقه ...
أمل محمد محمد أمين مصطفى
doaj   +1 more source

The “Pythagorean” “Theorem” and the Rant of Racist and Civilizational Superiority – Part 2

open access: yesArụmarụka, 2021
Previously we saw that racist prejudice is supported by false history. The false history of the Greek origins of mathematics is reinforced by a bad philosophy of mathematics. There is no evidence for the existence of Euclid.
C. K. Raju
doaj   +1 more source

Egyptian Mathematics Disclosure

open access: yesJournal of Advances in Mathematics and Computer Science, 2021
Some fundamental mathematical researches have been carried out about mathematical certainties based on ancient Egyptian mathematical sources and their problems following ancient Egyptian Wisdom set of knowledge building the new scientific paradigm following the rediscovery of the true value of PI and following the new approach of Global Dimensional ...
openaire   +1 more source

Ketazine‐Linked Covalent Organic Framework for Metal‐Free Electrocatalytic Nitrate‐to‐Ammonia Conversion

open access: yesAngewandte Chemie, EarlyView.
A metal‐free fluorinated ketazine‐linked COF is introduced as an efficient electrocatalyst for nitrate reduction to ammonia under neutral conditions. Fluorine substitution enhances π–π stacking and crystallinity, enabling a Faradaic efficiency of 59.9% and an NH3 yield rate of 1639.9 µmol h−1 mgCOF−1 at −0.9 V versus RHE. This establishes an unexplored
Islam E. Khalil   +12 more
wiley   +2 more sources

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