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Stagnation Detection with Randomized Local Search [PDF]

open access: yesEvolutionary Computation, 2021
Recently a mechanism called stagnation detection was proposed that automatically adjusts the mutation rate of evolutionary algorithms when they encounter local optima. The so-called $SD-(1+1)EA$ introduced by Rajabi and Witt (GECCO 2020) adds stagnation detection to the classical $(1+1)EA$ with standard bit mutation, which flips each bit independently ...
A. Rajabi, C. Witt
arxiv   +3 more sources

Connections between summer air pollution and stagnation

open access: yesEnvironmental Research Letters, 2018
The body of literature on ambient air pollution suggests that atmospheric stagnation events trigger high levels of air pollution. In this paper we use fifteen years (2000–2014) of summertime in situ air quality measurements together with meteorological ...
Gaige Hunter Kerr, Darryn W Waugh
doaj   +2 more sources

Detailed Review of Stagflation and Recession [PDF]

open access: yesSHS Web of Conferences, 2023
This paper thoroughly analyzes stagflation and recession along with their causes, effects and approaches to resolve them. Detailed literature on stagflation and recession provides value added analysis.
Liu Yuhao
doaj   +1 more source

Stagnation detection in highly multimodal fitness landscapes [PDF]

open access: yesAnnual Conference on Genetic and Evolutionary Computation, 2021
Stagnation detection has been proposed as a mechanism for randomized search heuristics to escape from local optima by automatically increasing the size of the neighborhood to find the so-called gap size, i. e., the distance to the next improvement.
A. Rajabi, C. Witt
semanticscholar   +1 more source

Is flushing necessary during building closures? A study of water quality and bacterial communities during extended reductions in building occupancy

open access: yesFrontiers in Water, 2022
Drinking water stagnation can lead to degradation of chlorine residual, bacterial growth (including of opportunistic pathogens and nitrifiers), and metals release from plumbing materials; however, few studies have characterized building water quality and
Hannah Greenwald   +15 more
doaj   +1 more source

The Economy of the Pandemic: A Far Eastern Russian Aspect [PDF]

open access: yesProstranstvennaâ Èkonomika, 2021
The article presents continuation of analysis of national and international aspects in assessment of economic after-effects of a new corona virus pandemic.
Pavel Aleksandrovich Minakir
doaj   +1 more source

Stagnation Traps [PDF]

open access: yesThe Review of Economic Studies, 2017
We provide a Keynesian growth theory in which pessimistic expectations can lead to very persistent, or even permanent, slumps characterized by high unemployment and weak growth. We refer to these episodes as stagnation traps, because they consist in the joint occurrence of a liquidity and a growth trap.
Benigno, Gianluca, Fornaro, Luca
openaire   +9 more sources

Limitations of Thermal Stability Analysis via In-Situ TEM/Heating Experiments

open access: yesNanomaterials, 2021
This work highlights some limitations of thermal stability analysis via in-situ transmission electron microscopy (TEM)-annealing experiments on ultrafine and nanocrystalline materials.
Osman El-Atwani   +4 more
doaj   +1 more source

Economic growth and productivity: Italy and the role of knowledge

open access: yesPSL Quarterly Review, 2020
The COVID-19 crisis has hit Italy severely: by mid-2020, GDP had returned to the level observed in 1993. This is the result not only of its sharp collapse in the first half of 2020, but also of its weak growth since the 1990s.
Ignazio Visco
doaj   +1 more source

On stagnation of the DGMRES method [PDF]

open access: yesIranian Journal of Numerical Analysis and Optimization, 2022
Let $A$ be an $n$-by-$n$ matrix with index $\alpha>0$ and $b \in \mathbb{C}^n$.  In this paper, the problem of stagnation of the DGMRES method for the singular linear system $Ax=b$ is considered. We show that DGMRES$(A, b, \alpha)$ has partial stagnation
F. Kyanfar
doaj   +1 more source

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