Results 191 to 200 of about 615,181 (292)

A comparison of star identification algorithms for star trackers

Star trackers are the most accurate attitude-determination systems for satellites. Its operation is based on the identification of the stars present in the field of view of a small telescope and the determination of the astronomical coordinates of the centre of the image.
openaire   +1 more source

Observer‐Based Adaptive Event‐Triggered Tracking Control for Fuzzy TS Systems With Premise Mismatch

International Journal of Adaptive Control and Signal Processing, EarlyView.
This paper presents an adaptive logistic event‐triggered observer‐based tracking controller for Takagi‐Sugeno fuzzy systems under constrained inputs and network delays. Leveraging a hybrid LMI and Secretary Bird Optimization approach, this strategy significantly minimizes communication overhead and computational burden while ensuring optimal reference ...
Oussama Djadane, Salama Makni, Mourad Kchaou, Ahmed El Hajjaji   +3 more
wiley   +1 more source

MINISTAR to STARLITE: Evolution of a Miniaturized Prototype for Testing Attitude Sensors. [PDF]

Sensors (Basel)
Nardino V, Baccani C, Ceccherini M, Cecchi M, Focardi F, Franci E, Guzzi D, Manna F, Milli V, Pini J, Salvadori L, Raimondi V.   +11 more
europepmc   +1 more source

Characterization of Defect Distribution in an Additively Manufactured AlSi10Mg as a Function of Processing Parameters and Correlations with Extreme Value Statistics

Advanced Engineering Materials, EarlyView.
Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt, Varma Kvvssn, Hossein Laieghi, Zia Uddin, Peyman Ansari, E. Kıvanç Sadak, Can Barış Toprak, Hüseyin Kızıl, Enrico Salvati   +8 more
wiley   +1 more source

Morinda officinalis polysaccharides activate the SIRT1/PGC-1α pathway to reduce oxidative damage in Leydig TM3 cells. [PDF]

Sci Rep
Fu M, Wu S, Yin X, Yang P, Gong B, Wang Z.   +5 more
europepmc   +1 more source

NFDI MatWerk Ontology (MWO): A BFO‐Compliant Ontology for Research Data Management in Materials Science and Engineering

Advanced Engineering Materials, EarlyView.
This article presents the NFDI‐MatWerk Ontology (MWO), a Basic Formal Ontology‐based framework for interoperable research data management in materials science and engineering (MSE). Covering consortium structures, research data management resources, services, and instruments, MWO enables semantic integration, Findable, Accessible, Interoperable, and ...
Hossein Beygi Nasrabadi, Ebrahim Norouzi, Kostiantyn Hubaiev, Jörg Waitelonis, Harald Sack   +4 more
wiley   +1 more source

Improving Astrometric Precision with MLP-Driven Super-Resolution of Star Maps. [PDF]

Sensors (Basel)
Lu Y, Xu X, Yan J, Zhang N, Lv Y.
europepmc   +1 more source

Sierra Club, Lone Star Chapter Newsletter

Newsletter from the Lone Star Chapter of Sierra Club regarding Big Thicket Committee with an article titled "Big Thicket Expansion Sought" from the Lone Star SierranThe Big Thicket Collection contains materials relating to the conservation of the Big ...
Sierra Club, Lone Star Chapter
core  

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

Advanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios, Anthony Gonzalez, Aleksander Aleman, Tyler Dolmetsch, Tanaji Paul, Arvind Agarwal   +5 more
wiley   +1 more source

SPATA22 heterozygous variants drive premature ovarian insufficiency: mechanism of granulosa cells dysfunction and therapeutic potential of N-acetylcysteine (NAC) treatment. [PDF]

Reprod Biol Endocrinol
Xia L, Zhang W, Liu M, Shen Y, Zhang J, Wang D, Wang F, Zhang Z, Zhong Y, Huang Y, Li G, Wang X, Wang Z, Liu S, Du J.   +14 more
europepmc   +1 more source