Results 141 to 150 of about 612,388 (310)
ABSTRACT Smallholder agriculture remains a cornerstone for economic development and poverty reduction in Latin America. Their transition to sustainable agricultural production is critical in the face of the environmental challenges posed by conventional farming practices and is a key pathway to achieving the United Nations' Sustainable Development ...
Gabriela Carbajo‐Alvarez+2 more
wiley +1 more source
The Rayleigh-Ritz and the Weinstein Methods for Approximation of Eigenvalues [PDF]
N. Aronszajn
openalex +1 more source
Multiresponsive Color‐Tunable Phosphorescence With Matrix‐Confined Clusters
The molecule with cluster‐triggered emission mechanisms is embedded in polymer matrix, the phosphorescence properties of multiclusters are size‐dependent and exhibit different responses to various stimuli, including temperature, concentration, and excitation, which synergistically induce color‐range tunable time‐dependent phosphorescence color behavior.
Lihui Hou+4 more
wiley +1 more source
Model‐based fault diagnosis in closed‐loop safety‐critical chemical reactors: An experimental study
Abstract This experimental study investigates fault detection and estimation in a continuous stirred‐tank reactor (CSTR) system under closed‐loop feedback control, including an analysis of different manipulative inputs for temperature regulation. A novel fault diagnosis approach is proposed, combining residual signal analysis and T2 statistic for real ...
Pu Du, Benjamin Wilhite, Costas Kravaris
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Phase transition from melt to most complex liquid crystal (LC) phases is weak 1st order but is preceded by a large heat capacity maximum. In addition, a chiral liquid forms through another transition before that to the LC, despite the compounds being achiral.
Yi‐nan Xue+9 more
wiley +2 more sources
On the second eigenvalue of nonlinear eigenvalue problems
This article is devoted to the characterization of the second eigenvalue of nonlinear eigenvalue problems. We propose an abstract approach which allows to treat nonsmooth quasilinear problems and also to recover, in a unified way, previous results concerning the p-Laplacian.
DEGIOVANNI M., MARZOCCHI M.
openaire +2 more sources
Joint Situational Assessment‐Hierarchical Decision‐Making Framework for Maneuver Intent Decisions
This study introduces a new framework for decision‐making in unmanned combat aerial vehicles (UCAVs), integrating graph convolutional networks and hierarchical reinforcement learning (HRL). The method tackles adopts a curriculum‐based training approach guided by cross‐entropy rewards.
Ruihai Chen+4 more
wiley +1 more source
Quadrotor unmanned aerial vehicle control is critical to maintain flight safety and efficiency, especially when facing external disturbances and model uncertainties. This article presents a robust reinforcement learning control scheme to deal with these challenges.
Yu Cai+3 more
wiley +1 more source
Zwitterionic Heavier Pnictinidenes in Redox Catalysis
Zwitterionic pnictinidenes: A new class of zwitterionic heavier pnictogen species stabilized by bis(N‐heterocyclic carbene)borate ligands is reported, enabling the isolation of Sb and Bi in multiple oxidation states. These thoroughly characterized systems exhibit cationic character and engage in redox catalysis, facilitating catalytic ...
Selwin Fernando+7 more
wiley +2 more sources
Impact of eigenvalues on the electron-phonon coupling strength of aluminium and its binary alloys
Aluminium is a third group element according to the periodic table. Chemically it is a reactive metal often forming complexes within its binary alloys.
B. K. Kantha+3 more
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