Results 21 to 30 of about 6,856,362 (286)

On $k$-Fibonacci balancing and $k$-Fibonacci Lucas-balancing numbers

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2021
The balancing number $n$ and the balancer $r$ are solution of the Diophantine equation $$1+2+\cdots+(n-1) = (n+1)+(n+2)+\cdots+(n+r). $$ It is well known that if $n$ is balancing number, then $8n^2 + 1$ is a perfect square and its positive square root is
S.E. Rihane
doaj   +1 more source

Herbicide Reduction Methods [PDF]

open access: yes, 2012
These management practices have proven to be useful, effective and worth the efforts for many farmers, but chemical weed control in the long term has to face changing conditions and circumstances. They are used in a constantly changing and adaptive environment, and therefore their effectiveness can vary over time and location.
MartinWeis,   +2 more
openaire   +2 more sources

An Analytic Method for $S$-Expansion involving Resonance and Reduction [PDF]

open access: yes, 2016
In this paper we describe an analytic method able to give the multiplication table(s) of the set(s) involved in an $S$-expansion process (with either resonance or $0_S$-resonant-reduction) for reaching a target Lie (super)algebra from a starting one ...
Ipinza, M. C.   +3 more
core   +2 more sources

Nonlinear methods for model reduction [PDF]

open access: yesESAIM: Mathematical Modelling and Numerical Analysis, 2021
Typical model reduction methods for parametric partial differential equations construct a linear space Vn which approximates well the solution manifold M consisting of all solutions u(y) with y the vector of parameters. In many problems of numerical computation, nonlinear methods such as adaptive approximation, n-term approximation, and certain tree ...
Bonito, Andrea   +5 more
openaire   +3 more sources

Ergonomic Risk Reduction Method in Aerospace Manufacturing [PDF]

open access: yesInternational Journal of Mathematical, Engineering and Management Sciences, 2021
In the aerospace manufacturing, lots of processes cannot be automated and are performed manually by skilled workers. Because there exist some human error mistakes in such manual working processes, root cause investigations of these mistakes are ...
Shigeshi Yamashita, Kodo Ito
doaj   +1 more source

A Reduction Method for Higher Order Variational Equations of Hamiltonian Systems [PDF]

open access: yes, 2011
Let $\mathbf{k}$ be a differential field and let $[A]\,:\,Y'=A\,Y$ be a linear differential system where $A\in\mathrm{Mat}(n\,,\,\mathbf{k})$. We say that $A$ is in a reduced form if $A\in\mathfrak{g}(\bar{\mathbf{k}})$ where $\mathfrak{g}$ is the Lie ...
Aparicio, Ainhoa, Weil, Jacques-Arthur
core   +2 more sources

Research on Organic Acids in Fruit Wine and Acid Reduction Strategies

open access: yesShipin gongye ke-ji, 2023
The type and content of organic acids have important influence on the quality of fruit wine. Proper amount of organic acids can give fruit wine soft taste, and has certain antibacterial effect.
Ying CAO   +5 more
doaj   +1 more source

Reliability Equivalence Factors for Coherent System using Survival Signature [PDF]

open access: yesInternational Journal of Mathematical, Engineering and Management Sciences
This study presents a methodology aimed at enhancing the performance of coherent systems through the application of survival signature analysis, focusing on the calculation of reliability equivalence factors (REFs).
Deepak, Garima Chopra, Deeksha
doaj   +1 more source

Damage Detection of Truss Structures by Reduction of Degrees of Freedom Using the Serep Method

open access: yesThe Baltic Journal of Road and Bridge Engineering, 2020
Damage detection of bridge structures during their operating lifetime is essential. In this paper, two approaches, All Degrees of Freedom and Reduction of the Degrees of Freedom methods, are used to detect the damages in structures.
Shahin Lale Arefi, Amin Gholizad
doaj   +1 more source

Transmission Network Reduction Method using Nonlinear Optimization

open access: yes, 2018
This paper presents a new method to determine the susceptances of a reduced transmission network representation by using nonlinear optimization. We use Power Transfer Distribution Factors (PTDFs) to convert the original grid into a reduced version, from ...
Demiray, Turhan   +2 more
core   +1 more source

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