Results 21 to 30 of about 467,877 (376)
Frontiers in Environmental Science, 2020 Legionella is an opportunistic waterborne pathogen associated with Legionnaires' disease and Pontiac fever. Despite improved public awareness, the incidence of Legionella associated infections has been increasing.
M. A. Nisar +4 more
semanticscholar +1 more source
A New Modified Firefly Algorithm for Optimizing a Supply Chain Network Problem
Applied Sciences, 2018 Firefly algorithm is among the nature-inspired optimization algorithms. The standard firefly algorithm has been successfully applied to many engineering problems. However, this algorithm might be stuck in stagnation (the solutions do not enhance anymore)
Ashkan Memari +3 more
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Innovation Stagnation in Polish Industry?
Gospodarka Narodowa. The Polish Journal of Economics, 2021 The subject of research in this paper is the development of innovativeness in Polish industry from 2006 to 2017. The paper’s basic aim is to evaluate the level of innovativeness in Polish industry during this period amid the inflow of European Union ...
Andrzej H. Jasiński
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Secular Stagnation? The Effect of Aging on Economic Growth in the Age of Automation
, 2017 Several recent theories emphasize the negative effects of an aging population on economic growth, either because of the lower labor force participation and productivity of older workers or because aging will create an excess of savings over desired ...
Daron Acemoglu, P. Restrepo
semanticscholar +1 more source
The effect planting hole size and manure on vegetative growth of golden teak (Tectona grandis L.)
Journal of Degraded and Mining Lands Management, 2018 Cultivation of the golden teak (Tectona grandis L.) requires the planting hole size and appropriate use of manure. The size of planting hole provides plant growth, so that the plant can grow with optimum and appropriate use of manure to provide nutrients
Didik Hariyono
doaj +1 more source
Observable Emission Features of Black Hole GRMHD Jets on Event Horizon Scales [PDF]
, 2017 The general-relativistic magnetohydrodynamical (GRMHD) formulation for black hole-powered jets naturally gives rise to a stagnation surface, wherefrom inflows and outflows along magnetic field lines that thread the black hole event horizon originate.
Asada, Keiichi +5 more
core +2 more sources
Energies, 2021 Stagnation is the transient state of a solar thermal system under high solar irradiation where the useful solar gain is zero. Both flat-plate collectors with selective absorber coatings and vacuum-tube collectors exhibit stagnation temperatures far above
Ralph Eismann +2 more
doaj +1 more source
The Stokes conjecture for waves with vorticity [PDF]
, 2012 We study stagnation points of two-dimensional steady gravity free-surface water waves with vorticity. We obtain for example that, in the case where the free surface is an injective curve, the asymptotics at any stagnation point is given either by the “
Almgren +25 more
core +2 more sources
On Secular Stagnation in the Industrialized World
Social Science Research Network, 2019 We argue that the economy of the industrialized world taken as a whole is currently – and for the foreseeable future will remain – highly prone to secular stagnation.
L. Rachel, Lawrence H. Summers
semanticscholar +1 more source
Differential Evolution Algorithm With Tracking Mechanism and Backtracking Mechanism
IEEE Access, 2018 Differential evolution (DE) is a simple and effective evolutionary algorithm that can be used to solve various optimization problems. In general, the population of DE tends to fall into stagnation or premature convergence so that it is unable to converge
Laizhong Cui +7 more
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