Results 21 to 30 of about 739,365 (344)

A social Beaufort scale to detect high winds using language in social media posts

open access: yesScientific Reports, 2021
People often talk about the weather on social media, using different vocabulary to describe different conditions. Here we combine a large collection of wind-related Twitter posts (tweets) and UK Met Office wind speed observations to explore the ...
Iain S. Weaver   +2 more
doaj   +1 more source

Magnetic Field Energy Harvesting From Current-Carrying Structures: Electromagnetic-Circuit Coupled Model, Validation and Application

open access: yesIEEE Access, 2021
Magnetic field energy harvesters (MFEHs) from current-carrying structures/conductors are usually modelled as decoupled electromagnetic and electrical systems.
Yang Kuang   +3 more
doaj   +1 more source

Heterostructures formed through abraded van der Waals materials

open access: yesNature Communications, 2020
Low-cost, mass-scalable production routes which preserve the quality of the single crystals are required to up-scale van der Waals materials. Here, the authors demonstrate an approach to realise a variety of functional heterostructures based on van der ...
Darren Nutting   +13 more
doaj   +1 more source

Heatwave–blocking relation change likely dominates over decrease in blocking frequency under global warming

open access: yesnpj Climate and Atmospheric Science, 2022
Extra-tropical continental summer heatwaves often occur under persistent anticyclones or blocking. Here we partition heatwave changes into contributions from blocking changes, heatwave–blocking relation change and mean temperature increase, under global ...
Pak Wah Chan   +2 more
doaj   +1 more source

Topological Indices of Pent-Heptagonal Nanosheets via M-Polynomials

open access: yesJournal of Mathematics, 2021
The combination of mathematical sciences, physical chemistry, and information sciences leads to a modern field known as cheminformatics. It shows a mathematical relationship between a property and structural attributes of different types of chemicals ...
Hafiza Bushra Mumtaz   +3 more
doaj   +1 more source

Investigating the ohmic behavior of mediator-less microbial fuel cells using sewerage water as the bio-anode

open access: yesCogent Engineering, 2022
There is a great challenge in ratification of electrochemical principles to energy-storage devices utilizing natural systems such as microbial fuel cells (MFCs).
Thiong’o Mbarire   +2 more
doaj   +1 more source

Transdisciplinary role of physical and mathematical disciplines in modern natural science and engineering education

open access: yesОбразование и наука, 2023
Introduction. In recent decades, a gradual degradation of mathematics and physics training in schools and universities has begun. Obviously, this has caused a significant decrease in the quality of professional training of students in the conditions of ...
V. A. Testov, E. A. Perminov
doaj   +1 more source

Physics difficulty and problem-solving: Exploring the role of mathematics and mathematical symbols

open access: yesInterdisciplinary Journal of Education Research
Reports of difficulty in physics has been documented over the years, especially at the senior secondary level. The application of mathematics as a tool for understanding physical phenomena and problem-solving is well-established.
Olalekan Taofeek Badmus, Loyiso C Jita
doaj   +1 more source

The Reasonable Ineffectiveness of Mathematics in the Biological Sciences

open access: yesEntropy
The known laws of nature in the physical sciences are well expressed in the language of mathematics, a fact that caused Eugene Wigner to wonder at the “unreasonable effectiveness” of mathematical concepts to explain physical phenomena.
Seymour Garte   +2 more
doaj   +1 more source

Index to 1981 NASA Tech Briefs, volume 6, numbers 1-4 [PDF]

open access: yes, 1986
Short announcements of new technology derived from the R&D activities of NASA are presented. These briefs emphasize information considered likely to be transferrable across industrial, regional, or disciplinary lines and are issued to encourage ...

core   +1 more source

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