Results 31 to 40 of about 736,821 (300)

Compatibility of mathematics study subjects in ŠU and ŠSC

open access: yesLietuvos Matematikos Rinkinys, 2011
In the article, main attention is given to the compatibility of study subjects of mathematics in studies programs of physical sciences “Business Informatics” and “Informatics”‘ at Šiauliai State College and Šiauliai University, respectively.
Roma Kačinskaitė   +1 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

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

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

A highly attenuating and frequency tailorable annular hole phononic crystal for surface acoustic waves

open access: yesNature Communications, 2017
The control and manipulation of propagating sound waves on a surface has applications in on-chip signal processing and sensing. Here, Ash et al. deviate from standard designs and fabricate frequency tailorable phononic crystals with an order-of-magnitude
B. J. Ash   +3 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

Current Tracking Adaptive Control of Brushless DC Motors

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView.
In this paper, the current tracking for Brushless Direct Current motors is approached considering uncertainty in the parameters of the motor's model. An adaptive control scheme to compensate electrical parameters uncertainty is proposed without requiring any knowledge of the mechanical parameters.
Fernanda Ramos‐García   +3 more
wiley   +1 more source

Metal-organic-frameworks derived cobalt embedded in various carbon structures as bifunctional electrocatalysts for oxygen reduction and evolution reactions

open access: yesScientific Reports, 2017
A series of nanocomposites of cobalt embedded in N-doped nanoporous carbons, carbon nanotubes or hollow carbon onions have been synthesized by a one-step carbonization of metal-organic-framework ZIF-67.
Binling Chen   +3 more
doaj   +1 more source

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