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Super class of implicit extended backward differentiation formulae for the numerical integration of stiff initial value problems [PDF]

Computational Algorithms and Numerical Dimensions
An implicit Superclass of non-block Extended Backward Differentiation Formulae (SEBDF) for the numerical integration of first-order stiff system of Ordinary Differential Equations (ODEs) in Initial Value Problems (IVPs) with optimal stability properties ...
Hamisu Musa, Buhari Alhassan
doaj +1 more source

Bending-activated biotensegrity structure enables female Megarhyssa to cross the barrier of Euler's critical force. [PDF]

Sci Adv, 2023
Wen R, Wang Z, Yi J, Hu Y.
europepmc +1 more source

Seismic analysis and design of tunnels within fault ground: A review

Deep Underground Science and Engineering, EarlyView.
The research methods of seismic response of tunnels within fault ground, including field investigations, analytical solutions, physical experiments, and numerical simulations, and seismic countermeasures are discussed. The present study examines the shortcomings and limitations of the current research and design, and puts forward proposals for future ...
Xingda Wang +6 more
wiley +1 more source

Multiplicity-weighted Euler's formula for symmetrically arranged space-filling polyhedra. [PDF]

Acta Crystallogr A Found Adv, 2020
Dauter Z, Jaskolski M.
europepmc +1 more source

Upper bound limit analysis of coral reef limestone cavern roof stability incorporating a tension‐shear failure mechanism with tensile‐strength cut‐off

Deep Underground Science and Engineering, EarlyView.
For the roof of coral reef limestone caverns, a novel tension‐shear composite failure mechanism was developed. The most critical tensile crack model was identified using a hybrid optimization algorithm, and the stability of the cavern roof was analyzed accordingly.
Dongsheng Xu, Chenxu Li, Chuantan Hou
wiley +1 more source

On the arithmetic nature of coefficients of multiplicative eta-functions

Вестник Самарского университета: Естественнонаучная серия
In the article we study the arithmetic nature of the coefficients of multiplicative eta-products, also called McKay functions. For some functions it is possible to establish Hecke correspondence between the coefficients of McKay and Hecke grossen ...
G. V. Voskresenskaya
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Estimating numerical integration errors [PDF]

Algorithm for use in estimating accumulated numerical integration ...
Arldt, M. J., Engvall, J. L.
core +1 more source

Robust Control Using a Matrix Converter to Enhance Wind Turbine Systems

Energy Science &Engineering, EarlyView.
This study uses a more efficient and effective solution to improve the operational performance of a wind turbine‐based power system. This system uses a doubly fed induction generator and relies on a matrix converter and fractional‐order proportional–integral controller.
Sihem Ghoudelbourk +4 more
wiley +1 more source

Assessing the Impact of Competency-Based Integration of Mathematical and Natural Science Knowledge on Critical Thinking, Analytical Skills, and Real-World Problem-Solving

Ianna Journal of Interdisciplinary Studies
Background: In modern education, there is a growing need to adopt a competency-based approach that supports the integration of knowledge across disciplines.
Liudmyla Hetmanenko
doaj

Jet Flow Field Analysis of Convergent‐Divergent Nozzle for Hydraulic Perforation for Natural Gas Hydrates

Energy Science &Engineering, EarlyView.
Combining the nozzle structure and wellbore size of the second natural gas hydrate trial production, the CFD is employed to analyze the internal and external flow fields of convergent–divergent cavitation nozzle. Analyzing the influence of various structural parameters of the nozzle on its jet performance, and the nozzle configuration with optimal jet ...
Wang Yingsheng +5 more
wiley +1 more source

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