Results 51 to 60 of about 3,811,747 (317)

Solution of Spatial Transformation Relationship of Similar Ruled Surfaces Based on Registration of Divided Regions

Machines, 2022
Since the geometric transformation relationship of similar surfaces with complex features, such as local deformation and curvature changes, is hard to be solved through global registration, this paper proposes a method for solving the spatial ...
Feiyan Han, Zhitao Hu, Longlong He, Xianlong Peng, Manzhi Yang, Chuanwei Zhang   +5 more
doaj   +1 more source

Controlling Surface Plasmons Through Covariant Transformation of the Spin-Dependent Geometric Phase Between Curved Metamaterials

, 2018
General relativity uses curved space-time to describe accelerating frames. The movement of particles in different curved space-times can be regarded as equivalent physical processes based on the covariant transformation between different frames.
Li, Jensen, Liu, Hui, Zhong, Fan, Zhu, Shining   +3 more
core   +1 more source

An SRTM-Aided Epipolar Resampling Method for Multi-Source High-Resolution Satellite Stereo Observation

Remote Sensing, 2019
Binocular stereo observation with multi-source satellite images used to be challenging and impractical, but is now a valuable research issue with the introduction of powerful deep-learning-based stereo matching approaches.
Jingwen Hu, Gui-Song Xia, Hong Sun
doaj   +1 more source

T-duality, Non-geometry and Lie Algebroids in Heterotic Double Field Theory [PDF]

, 2014
A number of issues in heterotic double field theory are studied. This includes the analysis of the T-dual configurations of a flat constant gauge flux background, which turn out to be non-geometric.
Blumenhagen, Ralph, Sun, Rui
core   +2 more sources

Pre-service mathematics teacher conducting prospective analysis: A case study on practice didactical design research

Infinity
This study aims to understand how pre-service mathematics teachers conduct prospective analyses comprehensively. A qualitative research method with a case study design was used.
Mohamad Gilar Jatisunda, Didi Suryadi, Sufyani Prabawanto, Uba Umbara   +3 more
doaj   +1 more source

A Learnable Joint Spatial and Spectral Transformation for High Resolution Remote Sensing Image Retrieval

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
Geometric and spectral distortions of remote sensing images are key obstacles for deep learning-based supervised classification and retrieval, which are worsened by cross-dataset applications. A learnable geometric transformation model imbedded in a deep
Yameng Wang, Shunping Ji, Yongjun Zhang
doaj   +1 more source

Geometric Phases in Graphitic Cones

, 2006
In this article we use a geometric approach to study geometric phases in graphitic cones. The spinor that describes the low energy states near the Fermi energy acquires a phase when transported around the apex of the cone, as found by a holonomy ...
A.M. de M. Carvalho, Aharonov, Azevedo, Berber, Berry, Bezerra, Burgers, Carollo, Charlier, Claudio Furtado, DiVincenzo, Fernando Moraes, Furtado, Furtado, Furtado, González, González, Iijima, Katanaev, Kleman, Krishnan, Krishnan, Kroto, Lammert, Mintmire, Osipov, Osipov, Osipov, Pachos, Tod, Viculis   +30 more
core   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

FEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li, Pedro A. Sánchez‐Murcia, Bernd Nidetzky   +2 more
wiley   +1 more source

Cell wall target fragment discovery using a low‐cost, minimal fragment library

FEBS Letters, EarlyView.
LoCoFrag100 is a fragment library made up of 100 different compounds. Similarity between the fragments is minimized and 10 different fragments are mixed into a single cocktail, which is soaked to protein crystals. These crystals are analysed by X‐ray crystallography, revealing the binding modes of the bound fragment ligands.
Kaizhou Yan, Mathew Stanley, Olawale Raimi, Andrew T. Ferenbach, Helge C Dorfmueller, Daan M. F. van Aalten   +5 more
wiley   +1 more source

Differential Characters and Geometric Chains

, 2013
We study Cheeger-Simons differential characters and provide geometric descriptions of the ring structure and of the fiber integration map. The uniqueness of differential cohomology (up to unique natural transformation) is proved by deriving an explicit ...
Baer, Christian, Becker, Christian
core   +1 more source