Results 41 to 50 of about 4,035,131 (289)
Analytic Moduli Spaces as Orbit Spaces
Publications of the Research Institute for Mathematical Sciences, 1987 This paper is an announcement of some general results on abstract local deformation theory in the complex-analytic context. Here semi-universal deformations are constructed as transversal slices to some group actions (in infinite dimensions). Proofs can be found in the joint book with the reviewer [Lokale Modulräume in der analytischen Geometrie (1987)]
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Versal deformations in orbit spaces
Linear Algebra and its Applications, 2004 Given an orbit space $M/\Gamma$ and an equivalence relation defined in it by means of the action of a group $G$, we obtain a miniversal deformation of an orbit through a miniversal deformation in $M$ with regard to a suitable group action of $G\times \Gamma$.
Puerta Sales, Ferran +2 more
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STar-DETR: A Lightweight Real-Time Detection Transformer for Space Targets in Optical Sensor Systems
SensorsOptical sensor systems are essential for space target detection. However, previous studies have prioritized detection accuracy over model efficiency, limiting their deployment on resource-constrained sensors.
Yao Xiao +5 more
doaj +1 more source
Diversity and complexity in neural organoids
FEBS Letters, EarlyView.Neural organoid research aims to expand genetic diversity on one side and increase tissue complexity on the other. Chimeroids integrate multiple donor genomes within single organoids. Self‐organising multi‐identity organoids, exogenous cell seeding, or enforced assembly of region‐specific organoids contribute to tissue complexity.
Ilaria Chiaradia, Madeline A. Lancaster
wiley +1 more source
Track association performance of the best hypotheses search method [PDF]
, 2013 Uncontrolled space objects in the geostationary orbit domain are hazardous threats for active satellites. Catalogs need to be build up, in order to protect this precious domain. The Swiss ZimSMART telescope, located in Zimmerwald, regularly scans the
Fiedler, H. +5 more
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Enhanced YOLOv8-based method for space debris detection using cross-scale feature fusion
Discover Applied SciencesOptical observations play a crucial role in monitoring space debris, and long exposure large field-of-view telescopes exhibit robust detection capabilities for identifying space debris.
Yang Guo +5 more
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A Lightweight Satellite Orbit Anomaly Detection Method Based on Peak-AAE and Its Edge Deployment
AerospaceThe detection of orbital anomalies is of critical importance to the safe operation of on-orbit spacecraft. Existing methods often rely on manually engineered features and are constrained by the limited computational resources of satellite equipment. This
Yang Guo +3 more
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FEBS Letters, EarlyView.Plasma membranes contain dynamic nanoscale domains that organize lipids and receptors. Because viruses operate at similar scales, this architecture shapes early infection steps, including attachment, receptor engagement, and entry. Using influenza A virus and HIV‐1 as examples, we highlight how receptor nanoclusters, multivalent glycan interactions ...
Jan Schlegel, Christian Sieben
wiley +1 more source
Orbit Precision Analysis of Small Man-Made Space Objects in LEO Based on Radar Tracking Measurements [PDF]
, 2012 The German Space Operations Center (GSOC) performs collision avoidance for 11 LEO and 2 GEO satellites. Risk detection and maneuver decisions strongly depend on the computed probability of collision that is driven by the anticipated orbit precision of ...
Letsch, Klemens +6 more
core
A passive satellite deorbiting strategy for medium Earth orbit using solar radiation pressure and the J(2) effect [PDF]
, 2012 The growing population of space debris poses a serious risk to the future of space flight. To effectively manage the increase of debris in orbit, end-of life disposal has become a key requirement for future missions.
Colombo, Camilla +2 more
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