Results 61 to 70 of about 7,665,845 (335)

Cosmological evolution and dark energy in osculating Barthel–Randers geometry

European Physical Journal C: Particles and Fields, 2021
We consider the cosmological evolution in an osculating point Barthel–Randers type geometry, in which to each point of the space-time manifold an arbitrary point vector field is associated.
Rattanasak Hama, Tiberiu Harko, Sorin V. Sabau, Shahab Shahidi   +3 more
doaj   +1 more source

OpenCRG Models From Different Data Sources to Support Vehicle Simulations

IEEE Access, 2022
Digital twins of road surfaces support multiple engineering applications. Remote sensing technologies provide information from the entire surface of the pavement by high accuracy point clouds. Pavement errors and differences from designed geometry can be
Tamas Lovas, Tamas Ormandi, Arpad Jozsef Somogyi, Daniel Baranyai, Viktor Tihanyi, Tamas Tettamanti   +5 more
doaj   +1 more source

Geometry of W-algebras from the affine Lie algebra point of view [PDF]

, 2000
To classify the classical field theories with W-symmetry one has to classify the symplectic leaves of the corresponding W-algebra, which are the intersection of the defining constraint and the coadjoint orbit of the affine Lie algebra if the W-algebra in
Bajnok Z, Bajnok Z, Bajnok Z, Balog J, Balog J, D Nógrádi, Fateev V A, Frenkel E, Gawedzki K, Gel'fand I M, Gel'fand I M, Gervais J L, Goddard P, Gorskii A, Khesin B A, Little J A, Luk'yanov S L, Ovsienko V Yu, Pressley A, Segal G, Witten E, Z Bajnok, Zamolodchikov A B   +22 more
core   +2 more sources

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

FEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Relativity and Singularities - A Short Introduction for Mathematicians [PDF]

, 2005
We summarize the main ideas of General Relativity and Lorentzian geometry, leading to a proof of the simplest of the celebrated Hawking-Penrose singularity theorems.
Natario, Jose
core   +5 more sources

Photosynthesis under far‐red light—evolutionary adaptations and bioengineering of light‐harvesting complexes

FEBS Letters, EarlyView.
Phototrophs evolved light‐harvesting systems adapted for efficient photon capture in habitats enriched in far‐red radiation. A subset of eukaryotic pigment‐binding proteins can absorb far‐red photons via low‐energy chlorophyll states known as red forms.
Antonello Amelii, Edoardo Andrea Cutolo, Daniele Montepietra, Claudia Battarra, Roberto Caferri, Stefano Capaldi, Zeno Guardini, Luca Dall'Osto, Roberto Bassi   +8 more
wiley   +1 more source

Fixed point geometry in chaotic neural networks

Physical Review Research
Understanding the high-dimensional chaotic dynamics occurring in complex biological systems such as recurrent neural networks or ecosystems remains a conceptual challenge.
Jakob Stubenrauch, Christian Keup, Anno C. Kurth, Moritz Helias, Alexander van Meegen   +4 more
doaj   +1 more source

Back to geometry: Efficient indoor space segmentation from point clouds by 2D–3D geometry constrains

International Journal of Applied Earth Observations and Geoinformation
This paper addresses the challenge of indoor space segmentation from 3D point clouds, which is essential for understanding interior layouts, reconstructing 3D structures, and developing indoor navigation maps.
Shengjun Tang, Junjie Huang, Benhe Cai, Han Du, Baoding Zhou, Zhigang Zhao, You Li, Weixi Wang, Renzhong Guo   +8 more
doaj   +1 more source

Structural insights into lacto‐N‐biose I recognition by a family 32 carbohydrate‐binding module from Bifidobacterium bifidum

FEBS Letters, EarlyView.
Bifidobacterium bifidum establishes symbiosis with infants by metabolizing lacto‐N‐biose I (LNB) from human milk oligosaccharides (HMOs). The extracellular multidomain enzyme LnbB drives this process, releasing LNB via its catalytic glycoside hydrolase family 20 (GH20) lacto‐N‐biosidase domain.
Xinzhe Zhang, Naoki Sunagawa, Toma Kashima, Kiyohiko Igarashi, Akimasa Miyanaga, Shinya Fushinobu   +5 more
wiley   +1 more source

EXPERIMENTS WITH UAS IMAGERY FOR AUTOMATIC MODELING OF POWER LINE 3D GEOMETRY [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2015
The ideal mapping technology for transmission line inspection is the airborne LiDAR executed from helicopter platforms. It allows for full 3D geometry extraction in highly automated manner.
G. Jóźków, B. Vander Jagt, C. Toth
doaj   +1 more source