Results 21 to 30 of about 590 (97)

A geometric characterisation of Desarguesian spreads

open access: yes, 2017
We provide a characterisation of $(n-1)$-spreads in $\mathrm{PG}(rn-1,q)$ that have $r$ normal elements in general position. In the same way, we obtain a geometric characterisation of Desarguesian $(n-1)$-spreads in $\mathrm{PG}(rn-1,q)$, $r>2$
Rottey, Sara, Sheekey, John
core   +1 more source

Tropical Cramer Determinants Revisited [PDF]

open access: yes, 2013
We prove general Cramer type theorems for linear systems over various extensions of the tropical semiring, in which tropical numbers are enriched with an information of multiplicity, sign, or argument.
Akian, Marianne   +2 more
core   +2 more sources

On BEL-configurations and finite semifields [PDF]

open access: yes, 2014
The BEL-construction for finite semifields was introduced in \cite{BEL2007}; a geometric method for constructing semifield spreads, using so-called BEL-configurations in $V(rn,q)$.
Lavrauw, Michel, Sheekey, John
core   +1 more source

Algebraic solution to a constrained rectilinear minimax location problem on the plane

open access: yes, 2012
We consider a constrained minimax single facility location problem on the plane with rectilinear distance. The feasible set of location points is restricted to rectangles with sides oriented at a 45 degrees angle to the axes of Cartesian coordinates.
Krivulin, Nikolai
core   +1 more source

Discrete Painlevé equations from Y-systems [PDF]

open access: yes, 2014
We consider T-systems and Y-systems arising from cluster mutations applied to quivers that have the property of being periodic under a sequence of mutations.
Alman J   +21 more
core   +1 more source

Phenology of Xylotrechus arvicola (Coleoptera: Cerambycidae) Adults in Spanish Vineyards

open access: yesAustralian Journal of Grape and Wine Research, Volume 2025, Issue 1, 2025.
Background and Aims: The longicorn beetle Xylotrechus arvicola (Olivier) (Coleoptera: Cerambycidae) is an important pest in vineyards of the Iberian Peninsula. Previous studies have reported that different varieties of grapevines Vitis vinifera exhibit varying susceptibility to infestation by this species. Methods and Results: Adult X.
Álvaro Rodríguez-González   +6 more
wiley   +1 more source

Biomimetic and Synthetic Advances in Natural Pesticides: Balancing Efficiency and Environmental Safety

open access: yesJournal of Chemistry, Volume 2025, Issue 1, 2025.
Biomimetic and synthetic advancements in natural pesticides are driving a transformative shift toward sustainable pest management, promoting agricultural productivity while preserving ecological balance. These innovative approaches are inspired by nature’s defense mechanisms, integrating cutting‐edge science to develop precise, effective, and ...
Mohammad Harun-Ur-Rashid   +2 more
wiley   +1 more source

Efficacy of Seed Oils From Azadirachta indica and Schinus molle and Their Combination Against Anopheles gambiae s.l.

open access: yesJournal of Tropical Medicine, Volume 2025, Issue 1, 2025.
Due to the increasing resistance to synthetic insecticides and the proliferation of resistant strains of malaria vectors, plant‐derived essential oils (EOs) are gaining prominence as an alternative for controlling Anopheles gambiae s.l. larvae.
Getnet Atenafu, Netuhsew Atnaf, Wei Wang
wiley   +1 more source

A symbiotic mosquito‐gut bacterium for flavivirus control

open access: yesClinical and Translational Medicine, Volume 14, Issue 12, December 2024.
Abstract Dengue virus (DENV) and Zika virus (ZIKV) have emerged as major global public health challenges, causing numerous infections and fatalities each year. However, current measures, including vaccines and treatments, are often limited or ineffective.
Jinglin Wang   +6 more
wiley   +1 more source

Determination of division algebras with 243 elements [PDF]

open access: yes, 2010
Finite nonassociative division algebras (i.e., finite semifields) with 243 elements are completely classified.Comment: 6 pages, 3 ...
Combarro, Elías F.   +2 more
core  

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