Results 51 to 60 of about 1,624,870 (150)

Uncertainty Quantification of Analytical Solutions for the Nonlinear Space and Time Fractional Order ϕ4$$ {\phi}^4 $$ Equation Under Fuzziness

Engineering Reports, Volume 8, Issue 7, July 2026.
Analytical fuzzy soliton solutions of a modified space–time fractional ϕ4$$ {\phi}^4 $$ model are derived using EHFM, capturing memory effects and uncertainty. Results reveal diverse wave structures and show how fractional order and fuzziness significantly influence soliton amplitude, localization, and propagation, with heightened sensitivity near the ...
Mohsin Khalid, Neha Andaleeb Khalid, Baboucarr Ceesay, Zafar Iqbal   +3 more
wiley   +1 more source

Ultrastructure and Function of the Male Reproductive System in the Rotifer Asplanchnopus cf. multiceps (Rotifera: Monogononta)

Journal of Morphology, Volume 287, Issue 7, July 2026.
Ultrastructure and function of the male reproductive system in the rotifer Asplanchnopus cf. multiceps (Rotifera: Monogononta). Thiago Q. Araújo*, Elizabeth Walsh, Robert L. Wallace, Rick Hochberg. The fine structure of the dwarf male of Asplanchnopus cf. multiceps possesses a singular testis with testicular rods and spermatozoa, ciliated vas deferens,
Thiago Quintão Araújo, Robert L. Wallace, Elizabeth J. Walsh, Rick Hochberg   +3 more
wiley   +1 more source

A Free and Open‐Source Tool for Spectral Unit Mapping Through Clustering of NIR Hyperspectral Images on Mars

Earth and Space Science, Volume 13, Issue 7, July 2026.
Abstract Spectral and hyperspectral data provide essential information on the surface composition of rocky planetary bodies, through which we can reconstruct and understand their origin and geologic evolution. In this field, applications of advanced tools, such as machine learning‐based algorithms, are steadily increasing.
Beatrice Baschetti, Mario D'Amore, Cristian Carli, Matteo Massironi, Francesca Altieri   +4 more
wiley   +1 more source

Robust Control Using a Matrix Converter to Enhance Wind Turbine Systems

Energy Science &Engineering, Volume 14, Issue 6, Page 2785-2815, June 2026.
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, Habib Benbouhenni, Adil Yahdou, Zakaria Mohamed Salem Elbarary, Nicu Bizon   +4 more
wiley   +1 more source

Hitchhiker's Guide to the Swampland: The Cosmologist's Handbook to the String‐Theoretical Swampland Programme

Fortschritte der Physik, Volume 74, Issue 4, April 2026.
Abstract String theory has strong implications for cosmology, implying the absence of a cosmological constant, ruling out single‐field slow‐roll inflation, and that black holes decay. The origins of these statements are elucidated within the string‐theoretical swampland programme.
Kay Lehnert
wiley   +1 more source

Extended version of decision making model for industrial robot selection via fractional continuous fuzzy information

Journal of Big Data
Fractional fuzzy sets are widely used in decision-making problems; however, they often face limitations in accurately modeling membership and non-membership values. These sets are considered classical models because they use only specific values from the
Asaf Khan, Saifullah Khan, Ariana Abdul Rahimzai, Saleem Abdullah   +3 more
doaj   +1 more source

Revisiting PSF models: Unifying framework and high‐performance implementation

Journal of Microscopy, Volume 301, Issue 3, Page 362-374, March 2026.
Abstract Localisation microscopy often relies on detailed models of point‐spread functions. For applications such as deconvolution or PSF engineering, accurate models for light propagation in imaging systems with a high numerical aperture are required. Different models have been proposed based on 2D Fourier transforms or 1D Bessel integrals.
Yan Liu, Vasiliki Stergiopoulou, Jonathan Chuah, Eric Bezzam, Gert‐Jan Both, Michael Unser, Daniel Sage, Jonathan Dong   +7 more
wiley   +1 more source

The fuzzy Riemann integral and its numerical integration 

, 2020
[[abstract]]The fuzzy Riemann integral and its numerical integration are proposed in this paper. The alpha-level set of this fuzzy Riemann integral is a closed interval whose end points are the classical Riemann integrals, thus we provide a numerical ...
Wu, HC, 吳憲忠
core  

Improving the Characteristics of the Direct FOC Strategy in DFIG‐Based Wind Turbine Systems Using FOIDD and FOPD Controllers

Energy Science &Engineering, Volume 14, Issue 2, Page 999-1021, February 2026.
This study presents a new control strategy for doubly fed induction generator (DFIG) wind turbine systems to overcome the limitations of traditional direct field control using proportional‐integral (DFOC‐PI) regulators, which are sensitive to coefficient changes and lead to low power quality.
Hamza Gasmi, Habib Benbouhenni, Z. M. S. Elbarary, Ilhami Colak, Tahar Tafticht, Salman Arafath Mohammed   +5 more
wiley   +1 more source

The Hadamard and Generalized Fractional Integral Fuzzy-Number-Valued Operators for Mappings of One and Two Variables, and Their Related Fuzzy Number Inequalities

Fractal and Fractional
In this study, we introduce new versions of fuzzy fractional integral operators for both one- and two-variable cases. Using these operators, several Hermite–Hadamard-type (H-type) inclusions are established for fuzzy-number-valued convex functions (F·N⋅V-
Jorge E. Macías-Díaz, Yaser Saber, Altaf Alshuhail, Loredana Ciurdariu, Armando Gallegos   +4 more
doaj   +1 more source