Zobrazeno 1 - 10
of 109
pro vyhledávání: '"A. A. Erfort"'
Publikováno v:
Research & Politics, Vol 10 (2023)
We present the PARTYPRESS Database, which compiles more than 250,000 published press releases from 68 parties in 9 European countries. The database covers the press releases of the most relevant political parties in these countries from 2010 onward.
Externí odkaz:
https://doaj.org/article/2d6f2bd9ac1741ec8cd6148f83448285
Publikováno v:
Phys. Rev. A 100, 063826 (2019)
On a two-dimensional planar parity-time-($\mathcal{PT}$-)symmetric nonlinear magnetic metamaterial, consisting of split-ring dimers with balanced gain and loss, discrete breather solutions can be found. We extend these studies and by numerical calcul
Externí odkaz:
http://arxiv.org/abs/1904.13075
Autor:
A. Bianchini, G. Bangga, I. Baring-Gould, A. Croce, J. I. Cruz, R. Damiani, G. Erfort, C. Simao Ferreira, D. Infield, C. N. Nayeri, G. Pechlivanoglou, M. Runacres, G. Schepers, B. Summerville, D. Wood, A. Orrell
Publikováno v:
Wind Energy Science, Vol 7, Pp 2003-2037 (2022)
While modern wind turbines have become by far the largest rotating machines on Earth with further upscaling planned for the future, a renewed interest in small wind turbines (SWTs) is fostering energy transition and smart grid development. Small mach
Externí odkaz:
https://doaj.org/article/12c7f7f950d740dfaaab888767a4c5cd
Autor:
Karamanski, Stefan1 (AUTHOR) skaramanski@csir.co.za, Erfort, Gareth2 (AUTHOR) erfort@sun.ac.za
Publikováno v:
Energies (19961073). May2023, Vol. 16 Issue 9, p3668. 24p.
Autor:
Stefan Karamanski, Gareth Erfort
Publikováno v:
Energies, Vol 16, Iss 9, p 3668 (2023)
South Africa’s energy network is under severe pressure due to low supply and overwhelming demand. With an increase in renewable energy providers, specifically wind energy, knowing how the supply can satisfy the electricity demand may relieve appreh
Externí odkaz:
https://doaj.org/article/7550c51bb4704f3d8ad315f1f65a6403
Publikováno v:
Journal of Applied Fluid Mechanics, Vol 12, Iss 6, Pp 2031-2038 (2019)
Turbulence models in computational fluid dynamics (CFD) aim to capture a complex phenomenon through simplified mathematical models. The models themselves range in terms of application, complexity and methodology. This work looked at a transitional mo
Externí odkaz:
https://doaj.org/article/b6d6e5828ccb48ee9989d9e34441e87e
Publikováno v:
Frontiers in Chemistry, Vol 8 (2021)
From an astrochemical point of view ketenimine (CH2CNH) is a complex organic molecule (COM) and therefore likely to be a building block for biologically relevant molecules. Since it has been detected in the star-forming region Sagittarius B2(N), it i
Externí odkaz:
https://doaj.org/article/0aa38cfd866c4cdb95f41a9df2875790
Autor:
Gordon Rae, Gareth Erfort
Publikováno v:
Journal of Energy in Southern Africa, Vol 31, Iss 4 (2020)
In the context of the Anthropocene, the decoupling of carbon emissions from electricity generation is critical. South Africa has an ageing coal power fleet, which will gradually be decommissioned over the next 30 years. This creates substantial oppor
Externí odkaz:
https://doaj.org/article/58fc8703ae7e41cbaea9765e932f4940
Autor:
Andrej Pustogow, Daniel Dizdarevic, Sebastian Erfort, Olga Iakutkina, Valentino Merkl, Gabriele Untereiner, Martin Dressel
Publikováno v:
Crystals, Vol 11, Iss 12, p 1545 (2021)
In the quasi-one-dimensional (TMTTF)2X compounds with effectively quarter-filled bands, electronic charge order is stabilized from the delicate interplay of Coulomb repulsion and electronic bandwidth. The correlation strength is commonly tuned by phy
Externí odkaz:
https://doaj.org/article/56aad3bd6caf4c0291945a31271110fc
Publikováno v:
Journal of Energy in Southern Africa, Vol 28, Iss 3, Pp 79-91 (2017)
Wind conditions in South Africa are suitable for small-scale wind turbines, with wind speeds below 7 m.s−1. This investigation is about a methodology to optimise a full wind turbine using a surrogate model. A previously optimised turbine was furthe
Externí odkaz:
https://doaj.org/article/b50a2c1729944d2bb9bbf95915bbd730