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Tracking and Disturbance Suppression of the Radio Telescope Servo System Based on the Equivalent-Input-Disturbance Approach
Published 2024-01-01“…This paper presents a composite control algorithm for the radio telescope servo control system to address the target tracking and matched/mismatched disturbance suppression problems. …”
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An Eccentric Sub-Neptune Moving Into the Evaporation Desert
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The Moon as a Cosmic-Ray Spectrometer: Prospects for MeV Gamma-Ray Observations
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Algorithm and mathematical model for geometric positioning of segments on aspherical composite mirror
Published 2018-09-01“…In recent years, the largest terrestrial and orbital telescopes operating in a wide spectral range of wavelengths use the technology of segmented composite elements to form the main mirror. …”
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Detailed Architecture of the L 98-59 System and Confirmation of a Fifth Planet in the Habitable Zone
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Carbon Nanotube Layer for Reduction of Fiber Print-Through in Carbon Fiber Composites
Published 2019-01-01“…Replica method is used for the production of lightweight telescope mirrors. …”
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IMPROVEMENT OF THE HYDRAULIC EXCAVATOR’S WORKING EQUIPMENT
Published 2020-03-01Get full text
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Experiment and simulation of single diamond abrasive particle scratching RB-SiC composite material
Published 2025-06-01“…However, the high hardness and brittleness lead to many defects when processed using traditional methods. To investigate the material removal mechanism and the surface damage causes during the grinding process of RB-SiC composite materials, the ABAQUS finite element software is used for scratch simulation and the scratching experiment of a single diamond abrasive indenter is used for verification.MethodsBased on ABAQUS finite element simulation software, a scratch simulation model of RB-SiC composite material with a multiphase structure is constructed. …”
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JWST COMPASS: NIRSpec/G395H Transmission Observations of the Super-Earth TOI-776 b
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A Next-generation Exoplanet Atmospheric Retrieval Framework for Transmission Spectroscopy (NEXOTRANS): Comparative Characterization for WASP-39 b Using JWST NIRISS, NIRSpec PRISM,...
Published 2025-01-01“…This hybrid approach enables a comparison between traditional Bayesian methods and computationally efficient machine learning techniques. …”
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Engineer Richard Fiedler and his Flamethrower Epic in Russia on the Eve of the First World War
Published 2023-07-01“…Fiedler managed to reach the gunreach of jet flamethrowers to the distances that are difficult to cover even today, and also to substantiate the tactical methods of their application. Fiedler's flamethrowers were successfully tested in Russia and in Germany in 1909–1910. …”
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Design and Analysis of Compatible Platform Screen Door Structure
Published 2025-07-01“…To better meet the safety, efficiency, and convenience requirements of passenger boarding/alighting in interoperability scenarios, it is necessary to conduct in-depth research on PSD compatibility schemes and structural performance, taking into account the train-type characteristics and load environments of intercity railways, city (suburban) railways, and urban rail transit vehicles. [Method] Taking the cross-line operation of Type-D and CRH6 trains as the research object for the through operation scenario, and based on the characteristics of passenger compartment door positions and parameters for through-operation trains, a side-hinged and telescoping composite compatible PSD typical structure and a full-side compatible PSD layout scheme are proposed. …”
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Equation of State Independent Determination on the Radius of a 1.4 M⊙ Neutron Star Using Mass–Radius Measurements
Published 2024-01-01“…Our results are consistent with X-ray timing, gravitational-wave, and nuclear physics constraints, while avoiding EOS-related biases. The same method has also been applied to a simulated mass–radius data set, based on our knowledge of future X-ray telescopes, demonstrating the model's ability to recover the injected R _1.4 value in certain cases. …”
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The marine avifauna of Matthew and Hunter Islands, two remote volcanoes of the New Hebrides chain
Published 2023-06-01“…Breeding birds recorded on Matthew and Hunter Islands in the tropical southwestern Pacific between 1973 and 2018 are summarised from a compilation of reports, for which various methods were used for counting seabirds. These methods included line transects, or direct observations using telescope or binoculars, or exhaustive counts, depending on the species observed and its nesting habitat. …”
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Enabling Robust Exoplanet Atmospheric Retrievals with Gaussian Processes
Published 2025-01-01“…Atmospheric retrievals are essential tools for interpreting exoplanet transmission and eclipse spectra, enabling quantitative constraints on the chemical composition, aerosol properties, and thermal structure of planetary atmospheres. …”
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An Elemental Abundance Diagnostic for Coordinated Solar Orbiter/SPICE and Hinode/EIS Observations
Published 2024-01-01“…We also perform an empirical experiment, using Hinode/EIS measurements of coronal fan loop temperature distributions weighted by randomly generated FIP bias values, to show that our diagnostic method can provide accurate results as it recovers the input FIP bias to within 10%–14%. …”
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A novel theoretical approach to predict the interannual variability of sulfur in Mercury’s exosphere and subsurface
Published 2025-06-01“…Since its discovery approximately 50 years ago, Mercury’s exosphere has been extensively observed by both ground-based and space-borne telescopes. The MErcury Surface, Space ENvironment, GEochemistry, and Ranging (MESSENGER) spacecraft operated 4 years in orbit around Mercury and allowed for the surface composition species to be inferred, notably including sulfur (S). …”
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Sequencing Silicates in the Spitzer Infrared Spectrograph Debris Disk Catalog. I. Methodology for Unsupervised Clustering
Published 2025-01-01“…CLUES combines multiple unsupervised clustering methods with multiscale distance measures to discern new groupings and trends, offering insights into compositional diversity and geophysical processes within these disks. …”
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