Results 51 to 60 of about 883 (177)

Molecular phylogenetics of Thymelaeaceae‐Thymelaeoideae: Resolving the paraphyly of Gnidia and a new monophyletic generic classification for the group

TAXON, Volume 75, Issue 4, August 2026.
Abstract Earlier phylogenetic analyses of the family Thymelaeaceae using combined plastid (matK, rbcL, rps16, trnL‐F) and nuclear (ITS) regions showed that the African‐Malagasy genus Gnidia was extensively polyphyletic in relation to the southern African genera Lachnaea, Passerina and Struthiola, as well as to other Southern Hemisphere genera such as ...
Oluwayemisi D. Olaniyan, James S. Boatwright, Anthony R. Magee, John C. Manning, Michelle van der Bank   +4 more
wiley   +1 more source

From Friends to Foes? Negative Campaign Tactics on Facebook and Their Effects on User Engagement Across Three National Elections in Sweden (2014–2022)

Scandinavian Political Studies, Volume 49, Issue 3, August 2026.
ABSTRACT Research has documented an increase in the use of negative campaign strategies during election campaigns worldwide. This study contributes to the literature by offering a longitudinal analysis of how negative statements and moral scandalization strategies by Swedish political parties on Facebook have evolved over time, and whether they ...
Andreas Widholm, Mattias Ekman, Walid Al‐Saqaf   +2 more
wiley   +1 more source

Invariants, Lie-Bäcklund Operators and Bäcklund Transformations [PDF]

, 1979
This thesis is mainly concerned with the application of groups of transformations to differential equations and in particular with the connection between the group structure of a given equation and the existence of exact solutions and conservation ...
Fokas, Athanassios S.
core   +1 more source

The Lattice Structure of Connection Preserving Deformations for q-Painlevé Equations I

Symmetry, Integrability and Geometry: Methods and Applications, 2011
We wish to explore a link between the Lax integrability of the q-Painlevé equations and the symmetries of the q-Painlevé equations. We shall demonstrate that the connection preserving deformations that give rise to the q-Painlevé equations may be thought
Christopher M. Ormerod
doaj   +1 more source

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

Bäcklund transformations, energy shift and the plane wave limit [PDF]

, 2007
We discuss basic properties of the Bäcklund transformations for the classical string in AdS space in the context of the null-surface perturbation theory.
Mikhailov, Andrei
core  

Bäcklund transformations according to Bishop frame in E31 [PDF]

, 2015
In this study we have defined Bäcklund transformations of curves according to Bishop frame preserving the natural curvatures under certain assumptions in Minkowski 3-space. © 2015, University of Tartu.
Tunçer, Yılmaz, Karacan, Murat Kemal
core   +1 more source

Pathways to increased attendance: Young people's experiences of turning absence to attendance in school

Journal of Research in Special Educational Needs, Volume 26, Issue 3, July 2026.
Abstract School attendance problems (SAPs) have received increased attention internationally in recent years; however, there are still few qualitative studies that explore attendance promotion from the perspective of young people with such experiences and who have managed to increase their attendance.
Åsa Backlund, Joakim Isaksson, Ulf Fredriksson, Susanne Kreitz‐Sandberg   +3 more
wiley   +1 more source

Bäcklund transformations for higher order Painlevé equations [PDF]

, 2004
We present a new generalized algorithm which allows the construction of Bäcklund transformations (BTs) for higher order ordinary differential equations (ODEs).
Gordoa, P.R., Gordoa, P. R., Muğan, U., Sakka, A., Pickering, A.   +4 more
core   +1 more source

Analyzing Soliton Solutions of the (n+1)-dimensional generalized Kadomtsev–Petviashvili equation: Comprehensive study of dark, bright, and periodic dynamics

Results in Physics
This paper investigates the (n+1) dimensional integrable extension of the Kadomtsev–Petviashvili (KP) equation. The study focuses on extracting Auto-Bäcklund transformations for the given model using the extended homogeneous balance (HB) method in ...
Nauman Raza, Ahmed Deifalla, Beenish Rani, Nehad Ali Shah, Adham E. Ragab   +4 more
doaj   +1 more source