Results 81 to 90 of about 277 (163)

Ordered Median Traveling Salesman Problem

open access: yesNetworks, Volume 88, Issue 1, Page 59-84, July 2026.
ABSTRACT This paper introduces a novel combinatorial optimization problem with ordering constraints, termed the Ordered Median Traveling Salesman Problem (OMTSP). The OMTSP integrates key elements from both the classic Traveling Salesman Problem (TSP) and the Ordered Median Location Problem.
Ivana Ljubić   +3 more
wiley   +1 more source

Exact Solutions for the Moving Firefighter Problem on Trees

open access: yesNetworks, Volume 88, Issue 1, Page 42-58, July 2026.
ABSTRACT The moving firefighter problem (MFP) is a more realistic variant of the classic firefighter problem (FP), where firefighters require time for both travel and defense. Unfortunately, the only known exact solution for the MFP does not scale. In this paper, we establish that the MFP is NP‐complete on trees of maximum degree three and present four
Mauro A. Montenegro‐Meza   +4 more
wiley   +1 more source

Multipoint Aerostructural Optimization of Wind Turbine Rotors Using a Coupled Blade‐Resolved Aerostructural Solver

open access: yesWind Energy, Volume 29, Issue 7, July 2026.
ABSTRACT Physics‐based design optimization workflows thread the needle between computational cost limitations and simulation complexity, often compromising between modeling detail and the range of operating design conditions. Multipoint aerostructural optimization of wind turbine rotors has so far been confined to low‐fidelity analyses or to high ...
Marco Mangano   +5 more
wiley   +1 more source

Primality Testing and Factorization by using Fourier Spectrum of the Riemann Zeta Function

open access: yes
In number theory, integer factorization is the decomposition of a composite number into a product of smallerintegers, for which there is not known ecient algorithm.
Musha, Takaaki
core  

Narrative Review of Catatonia in Psychosis and Eating Disorders: Common Intersections and Treatment Considerations

open access: yesEarly Intervention in Psychiatry, Volume 20, Issue 7, July 2026.
ABSTRACT Background Eating disorders (ED) and psychosis/psychotic‐spectrum disorders (PSD) have overlapping symptoms and may co‐occur in a variety of presentations. Due to its debilitating and life‐threatening risk, it is important for clinicians to be aware of how catatonia may present within these co‐occurrences.
Rosiel Elwyn
wiley   +1 more source

Elementary number theory

open access: yes, 2014
Introduction. Divisibility. Linear Diophantine Equations. Unique Factorization. Applications of Unique Factorization. Congruences. Fermat, Euler, Wilson. Cryptographic Applications. Order and Primitive Roots. More Cryptographic Applications.
Washington, Lawrence C, Kraft, James S
core  

Knots prime on many strings

open access: yes, 1984
A study is made of the factorization of prime knots into tangles. Several infinite families of knots which do not factor into prime tangles are examined, and a new characterization of knot primality is developed.
Steven A. Bleiler
core   +1 more source

Upscaling the Strength Domain of Heterogeneous Cohesive‐Frictional Materials via a General FFT‐Based Limit Analysis Approach

open access: yesInternational Journal for Numerical Methods in Engineering, Volume 127, Issue 12, 30 June 2026.
ABSTRACT Limit analysis and yield design provide a well‐defined mathematical framework for upscaling the strength properties of heterogeneous materials. These techniques can be incorporated into an FFT‐based computational micromechanics framework to evaluate the strength of heterogeneous materials, based on images of their microstructure.
Elodie Donval, Matti Schneider
wiley   +1 more source

Prime Factorization of the Kirchhoff Polynomial: Compact Enumeration of Arborescences

open access: yes, 2015
We study the problem of enumerating all rooted directed spanning trees (arborescences) of a directed graph (digraph) $G=(V,E)$ of $n$ vertices. An arborescence $A$ consisting of edges $e_1,\ldots,e_{n-1}$ can be represented as a monomial $e_1\cdot e_2 ...
Matúš Mihalák   +7 more
core   +1 more source

Passive Shape‐Adaptive Fluidic Interface for Enhanced Skin‐Sensor Coupling in Wearable Devices

open access: yesAdvanced Materials Technologies, Volume 11, Issue 11, 5 June 2026.
This study presents a passive fluidic interface for wearable biosensors that adapts to static and dynamic body shape changes to maintain consistent skin contact. Flexible, fluid‐filled pouches redistribute pressure from high‐load areas to regions requiring improved contact, enhancing signal quality and comfort in a compact, low‐energy design for ...
Natalia Sanchez‐Tamayo   +6 more
wiley   +1 more source

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