Results 51 to 60 of about 6,368 (219)

Beyond Straight Lines: Contextualizing Lobachevsky's Parallel Postulate Through the Geometry of the "Bubu" Fishing Gear

open access: yesJournal of Honai Math
The axiom of Lobachevsky's parallelism is one of the topics that students often find difficult. The purpose of this research is to design a learning trajectory about the Lobachevsky axiom of parallelism using the context of a valid, practical and ...
Abdurrobbil Falaq Dwi Anggoro   +3 more
doaj   +1 more source

On Analogues of the Fuhrmann'S Theorem on the Lobachevsky Plane

open access: yesВладикавказский математический журнал, 2023
Summary: According to Ptolemy's theorem, for a quadrilateral inscribed in a circle on the Euclidean plane, the product of the lengths of the diagonals is equal to the sum of the products of the lengths of opposite sides. This theorem has various generalizations.
openaire   +1 more source

TTV Species Diversity as a Novel Biomarker of Immune Dysregulation in Aging

open access: yesJournal of Medical Virology, Volume 97, Issue 11, November 2025.
ABSTRACT Torquetenovirus (TTV) is a prevalent virus whose clinical significance remains unclear, potentially linked to immunosenescence. This study examines TTV species in relation to immune impairment, inflammation, and cellular stress response in aging.
Federica Novazzi   +35 more
wiley   +1 more source

UnnMindFlex: A prototype mobile application and case study on HRV-guided cognitive enhancement

open access: yesJournal on Interactive Systems
In today’s demanding world, cognitive fitness plays a vital role in academic success and overall well-being, particularly for students facing academic challenges.
Samuel Olawuwo   +5 more
doaj   +1 more source

IT-education using intelligent learning environments

open access: yesСовременные информационные технологии и IT-образование, 2017
A new systematic approach for structuring of content, methodology and didactics for IT courses is proposed. A mixture of frame-based and production systems is used to represent the knowledge and organize the interactive learning.
Pavel D. Basalin   +5 more
doaj   +1 more source

Transforming Lindblad Equations into Systems of Real-Valued Linear Equations: Performance Optimization and Parallelization of an Algorithm

open access: yesEntropy, 2020
With their constantly increasing peak performance and memory capacity, modern supercomputers offer new perspectives on numerical studies of open many-body quantum systems.
Iosif Meyerov   +6 more
doaj   +1 more source

Asymptotics of quantum 6j$6j$‐symbols and generalized hyperbolic tetrahedra

open access: yesJournal of Topology, Volume 18, Issue 3, September 2025.
Abstract We establish the geometry behind the quantum 6j$6j$‐symbols under only the admissibility conditions as in the definition of the Turaev–Viro invariants of 3‐manifolds. As a classification, we show that the 6‐tuples in the quantum 6j$6j$‐symbols give in a precise way to the dihedral angles of (1) a spherical tetrahedron, (2) a generalized ...
Giulio Belletti, Tian Yang
wiley   +1 more source

The Combination of Two Small Molecules Improves Neurological Parameters and Extends the Lifespan of C3H Strain Female Mice

open access: yesBrain and Behavior, Volume 15, Issue 6, June 2025.
The small molecules RepSox and TCP were investigated for their geroprotective effects in aging C3H mice through intraperitoneal administration. Treatment resulted in improved neurological markers and physical parameters in older mice (16‐20 months), while younger treated mice (10‐13 months) showed increased maximum lifespan compared to controls.
Maria Vedunova   +5 more
wiley   +1 more source

High‐Entropy Halides for Intercalation Battery Electrode Materials

open access: yesChemElectroChem, Volume 12, Issue 9, May 5, 2025.
The introduction of the high‐entropy concept to oxides has resulted in improvements in electrochemical properties, which have also been recently applied to fluorides. This concept is a perspective of the fundamentals of high‐entropy concept applying to halides in general.
Sebastian Schumacher   +4 more
wiley   +1 more source

Complex analysis and monitoring of the environment based on earth sensing data [PDF]

open access: yesКомпьютерная оптика, 2019
We study a problem of complex analysis and monitoring of the environment based on Earth Sensing Data, with the emphasis on the use of hyperspectral images (HSI), and propose a solution based on developing algorithmic procedures for HSI processing and ...
Leonid Lebedev   +5 more
doaj   +1 more source

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