Results 31 to 40 of about 48,907 (262)

S-continued fractions for complex transport coefficients of two-phase composites

Computer Assisted Methods in Engineering and Science, 2023
We examine S-continued fraction bounds on the effective dielectric constant ee of a two-phase composite for the case where the dielectric coefficients e1 and e2 are complex.
Stanisław Tokarzewski, Józef Joachim Telega   +1 more
doaj  

Metric Properties of Denjoy's Canonical Continued Fraction Expansion

Tokyo Journal of Mathematics, 2008
The authors continue their study [Osaka J. Math. 40, No. 1, 235--244 (2003; Zbl 1046.11052)] of continued fraction expansions and in particular, Denjoy's canonical continued fraction expansion and its associated dynamical system \(( [0,\infty), \mathcal{B}, \mu, T_d)\). Various properties are considered, including using the Perron Frobenius operator of
Iosifescu, M. (author), Kraaikamp, C. (author)   +1 more
openaire   +6 more sources

Exploiting metabolic adaptations to overcome dabrafenib treatment resistance in melanoma cells

Molecular Oncology, EarlyView.
We show that dabrafenib‐resistant melanoma cells undergo mitochondrial remodeling, leading to elevated respiration and ROS production balanced by stronger antioxidant defenses. This altered redox state promotes survival despite mitochondrial damage but renders resistant cells highly vulnerable to ROS‐inducing compounds such as PEITC, highlighting redox
Silvia Eller, Susanne Ebner, Carmen Haselrieder, Julia K. Günther, Astrid Drasche, Sophie Strich, Chiara Volani, Andrea Medici, Aleksandar Nikolajevic, Alex Deltedesco, Johannes E. Sigmund, Michael J. Blumer, Martin Hermann, Johanna Vanacker, Gerald Brandacher, Eduard Stefan, Omar Torres‐Quesada, Jakob Troppmair   +17 more
wiley   +1 more source

On numerical stability of continued fractions

Математичні Студії
The paper considers the numerical stability of the backward recurrence algorithm (BR-algorithm) for computing approximants of the continued fraction with complex elements.
V. Hladun, V. Кravtsiv, M. Dmytryshyn, R. Rusyn   +3 more
doaj   +1 more source

Theoretical investigation of the perturbed artificial satellite problem using oblate continued fraction potential

Journal of Taibah University for Science, 2021
In this research article, a new idea concerning the application of concept of the continued fractions to the expansion of the geopotential is treated. The perturbed motion of the satellite in the oblate gravitational field of the Earth using a potential ...
S. E. Abd El-Bar
doaj   +1 more source

Rational Approximations of Arbitrary Order: A Survey

Fractal and Fractional, 2021
This paper deals with the study and analysis of several rational approximations to approach the behavior of arbitrary-order differentiators and integrators in the frequency domain.
José Daniel Colín-Cervantes, Carlos Sánchez-López, Rocío Ochoa-Montiel, Delia Torres-Muñoz, Carlos Manuel Hernández-Mejía, Luis Abraham Sánchez-Gaspariano, Hugo Gustavo González-Hernández   +6 more
doaj   +1 more source

Ergodicity of N -continued fraction expansions

Journal of Number Theory, 2013
The authors of this paper study a special kind of continued fraction expansions, firstly introduced by \textit{E. B. Burger} and his co-authors in the paper [J. Number Theory 128, No. 1, 144--153 (2008; Zbl 1210.11078)]. Applying the map \(T_{N}:[0,1)\rightarrow [0,1)\), defined by \(T_{N}(x)=\frac{N}{x}-\lfloor\frac{N}{x}\rfloor\) with \(x\neq0\) and \
Dajani, K., Kraaikamp, C., van der Wekken, N.   +2 more
openaire   +4 more sources

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

Molecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source

On the numerical stability of the branched continued fraction expansion of the ratio $H_4(a,d+1;c,d;\mathbf{z})/H_4(a,d+2;c,d+1;\mathbf{z})$

Математичні Студії
Continued fractions and their generalization, branched continued fractions, are the effective tools used to study special functions. In this aspect, an important problem of continued fractions and branched continued fractions is the study of their ...
M. V. Dmytryshyn, C. Cesarano, O. Kondur, I.-A. Lutsiv   +3 more
doaj   +1 more source

Optimal Modelling of (1 + α) Order Butterworth Filter under the CFE Framework

Fractal and Fractional, 2020
This paper presents the optimal rational approximation of (1+α) order Butterworth filter, where α ∊ (0,1) under the continued fraction expansion framework, by employing a new cost function.
Shibendu Mahata, Rajib Kar, Durbadal Mandal   +2 more
doaj   +1 more source