73 citations
- National Institute for Theoretical PhysicsZA3 papers
- University of KwaZulu-NatalZA3 papers
- Colorado School of MinesUS1 paper
- Ghent UniversityBE1 paper
- Institute for Chemical and Physical ProcessesIT1 paper
- North-West UniversityZA1 paper
- Universidad de ExtremaduraES1 paper
- University of MessinaIT1 paper
- University of PretoriaZA1 paper
5 papers
Feature extraction for plant growth estimation
Simbarashe Aldrin Ngorima, Albert Helberg, Marelie H. Davel
Precision agriculture requires the estimation of plant growth stages in real-time. When the plant growth stage is known, the wastage of resources in cultivation, such as nutrients…
The Gardner equation and acoustic solitary waves in plasmas
Frank Verheest, Willy A. Hereman
Ion-acoustic waves in a dusty plasma are investigated where it is assumed that the ions follow a Cairns distribution and the electrons are Boltzmann distributed. Two theoretical me…
Virial coefficients, equation of state, and demixing of binary asymmetric nonadditive hard-disk mixtures
Giacomo Fiumara, Franz Saija, Giuseppe Pellicane +3
Values of the fifth virial coefficient, compressibility factors, and fluid-fluid coexistence curves of binary asymmetric nonadditive mixtures of hard disks are reported. The former…
Comparison and unification of non-Hermitian and Lindblad approaches with applications to open quantum optical systems
Konstantin G. Zloshchastiev, Alessandro Sergi
We compare two approaches to open quantum systems, namely, the non-Hermitian dynamics and the Lindblad master equation. In order to deal with more general dissipative phenomena, we…
Volume element structure and roton-maxon-phonon excitations in superfluid helium beyond the Gross-Pitaevskii approximation
Konstantin G. Zloshchastiev
We propose a theory which deals with the structure and interactions of volume elements in liquid helium II. The approach consists of two nested models linked via parametric space.…