Results 31 to 40 of about 2,005,958 (244)

Variable neighbourhood search for the minimum labelling Steiner tree problem [PDF]

, 2009
We present a study on heuristic solution approaches to the minimum labelling Steiner tree problem, an NP-hard graph problem related to the minimum labelling spanning tree problem.
Consoli, S, Darby-Dowman, K, Mladenović, N, Moreno-Pérez, JA   +3 more
core   +1 more source

Participation in Boys & Girls Clubs Of Winnipeg is Associated With Health, Social and Education Outcomes Among Metis Children

International Journal of Population Data Science, 2020
Introduction The Boys & Girls Clubs of Winnipeg (BGCW) provide out-of-school programs to children and youth living in low-income neighbourhoods in Winnipeg, Canada.
Jennifer Enns, Marni Brownell, Nathan Nickel, Julianne Sanguins, Joykrishna Sarkar, Elaine Burland, Mariette Chartier, Dan Chateau, Alan Katz   +8 more
doaj   +1 more source

Participation in Boys & Girls Clubs Of Winnipeg is Associated With Health, Social and Education Outcomes Among First Nation Children

International Journal of Population Data Science, 2020
Introduction The Boys & Girls Clubs of Winnipeg (BGCW) provide out-of-school programs to children and youth living in low-income neighbourhoods in Winnipeg, Canada.
Jennifer Enns, Marni Brownell, Nathan Nickel, Kim O’Laney, Nora Murdock, Joykrishna Sarkar, Elaine Burland, Mariette Chartier, Dan Chateau, Alan Katz   +9 more
doaj   +1 more source

Music always helps: Associations of music subject choices with academic achievement in secondary education

British Educational Research Journal, 2023
This paper investigates the relationship between music qualification choice and academic performance in secondary education in England at Key Stage 4 (KS4; usually at ages 15 and 16). We analysed data from 2257 pupils at 18 educational settings in a city
M. Levstek, Daniel Elliott, Robin Banerjee   +2 more
semanticscholar   +1 more source

Aperture referral in dioptric systems with stigmatic elements

African Vision and Eye Health, 2012
A previous paper develops the general theory of aperture referral in linear optics and shows how several ostensibly distinct concepts, including the blur patch on the retina, the effective corneal patch, the projective field and the field of view, are ...
W. F. Harris
doaj   +1 more source

Refined Description and Stability for Singular Solutions of the 2D Keller‐Segel System [PDF]

Communications on Pure and Applied Mathematics, 2019
We construct solutions to the two‐dimensional parabolic‐elliptic Keller‐Segel model for chemotaxis that blow up in finite time T. The solution is decomposed as the sum of a stationary state concentrated at scale λ and of a perturbation.
Charles Collot, T. Ghoul, N. Masmoudi, V. T. Nguyen   +3 more
semanticscholar   +1 more source

Viscosity Limits for Zeroth‐Order Pseudodifferential Operators

Communications on Pure and Applied Mathematics, 2022
Motivated by the work of Colin de Verdière and Saint‐Raymond on spectral theory for zeroth‐order pseudodifferential operators on tori, we consider viscosity limits in which zeroth‐order operators, P, are replaced by P + iν Δ, ν > 0.
J. Galkowski, M. Zworski
semanticscholar   +1 more source

A Modified p-Median Model for the Emergency Facilities Location Problem and Its Variable Neighbourhood Search-Based Algorithm

Journal of Applied Mathematics, 2013
Emergency incidents, including natural disasters, terrorist attacks, public health outbreaks, and industrial and mining accidents, and so forth, result in severe human casualties and property losses.
Menghao Xi, Feng Ye, Zhong Yao, Qiuhong Zhao   +3 more
semanticscholar   +1 more source

Modulation Instability and Abundant Exact Solitons to the Fractional Mathematical Physics Model Through Two Distinct Methods

Axioms
The paper consists of various types of wave solutions for the truncated M-fractional Bateman–Burgers equation, a significant mathematical physics equation. This model describes the nonlinear waves and solitons in different physical fields such as optical
Abdulaziz Khalid Alsharidi, Ahmet Bekir
doaj   +1 more source

Time after time – circadian clocks through the lens of oscillator theory

FEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo, Carolin Ector, Hanspeter Herzel   +2 more
wiley   +1 more source