Results 151 to 160 of about 3,982 (257)

Spectral Submanifolds of Delay Systems: Control in Continuous and Discrete Time

open access: yesInternational Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT This paper presents both continuous‐time and discretization‐based approaches for constructing spectral submanifolds (SSMs) for time delay systems. The continuous‐time approach built upon sun–star calculus, reformulates the governing delay differential equation (DDE) as an operator differential equation (OpDE).
Bence Szaksz   +2 more
wiley   +1 more source

Towards Responsible Mining in Africa: Problematising the Environmental and Public Health Concerns of Artisanal and Small‐Scale Gold Mining in Ghana

open access: yesSustainable Development, EarlyView.
ABSTRACT There have been emerging media reports on the impact of cyanide and mercury use in artisanal and small‐scale gold mining (ASGM) operations on community health, especially among pregnant and non‐pregnant women, ASGM miners, and children in rural Africa.
Francis Arthur‐Holmes   +2 more
wiley   +1 more source

Self‐Assembly of a Colloidal Honeycomb Crystal in Silico for Topological Valley Photonics

open access: yesSmall, EarlyView.
The self‐assembly of a colloidal honeycomb crystal is demonstrated in computer simulations, using an assembly strategy that not only suppresses the formation of real‐space topological defects observed experimentally but also yields topological photonic properties in reciprocal space.
Adam Walker   +5 more
wiley   +1 more source

Toward an Intermediate Structural Representation of Organization in Complex Systems

open access: yesSystems Research and Behavioral Science, EarlyView.
ABSTRACT Organization is widely recognized as a fundamental concept in complex systems science, yet it rarely appears as an explicit object of scientific representation. Existing approaches successfully represent components, interactions, mechanisms, dynamical states, networks, or functions, but organizational properties are generally inferred from ...
Paméla Magotte
wiley   +1 more source

Sequential Reduction of Chromite Pellets Using Hydrogen and Silicon Carbide for Carbon Emission Abatement During Ferrochrome Production

open access: yessteel research international, EarlyView.
H2 prereduction selectively metallizes Fe in UG2 chromite pellets at 1100°C, while silicon carbide becomes active at 1300°C to convert remaining Cr2O3 to carbides and promote Cr metallization. By separating the roles of H2 and SiC, the sequential route reaches up to 65.7% Cr metallization and suppresses in‐furnace CO generation by ≈75% versus ...
D. Coertzen   +5 more
wiley   +1 more source

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