Results 81 to 90 of about 87,325 (190)

STGLR: A Spacecraft Anomaly Detection Method Based on Spatio-Temporal Graph Learning

Sensors
Anomalies frequently occur during the operation of spacecraft in orbit, and studying anomaly detection methods is crucial to ensure the normal operation of spacecraft. Due to the complexity of spacecraft structures, telemetry data possess characteristics
Yi Lai, Ye Zhu, Li Li, Qing Lan, Yizheng Zuo   +4 more
doaj   +1 more source

Short-Period Characteristics Analysis of On-Orbit Solar Arrays

Aerospace
Based on the analysis of solar array current data from a certain MEO-orbiting satellite, this paper reveals its short-period fluctuation characteristics and underlying mechanisms.
Huan Liu, Chenjie Kong, Yuan Shen, Baojun Lin, Xueliang Wang, Qiang Zhang   +5 more
doaj   +1 more source

On-Orbit Life Prediction and Analysis of Triple-Junction Gallium Arsenide Solar Arrays for MEO Satellites

Aerospace
This paper focuses on the triple-junction gallium arsenide solar array of a MEO (Medium Earth Orbit) satellite that has been in orbit for 7 years. Through a combination of theoretical and data-driven methods, it conducts research on anti-radiation design
Huan Liu, Chenjie Kong, Yuan Shen, Baojun Lin, Xueliang Wang, Qiang Zhang   +5 more
doaj   +1 more source

Evolutionary associations between sand seatrout (Cynoscion arenarius) and silver seatrout (C. nothus) inferred from morphological characters, mitochondrial DNA, and microsatellite markers [PDF]

, 2009
The evolutionary associations between closely related fish species, both contemporary and historical, are frequently assessed by using molecular markers, such as microsatellites.
Anderson, Joel D., Karel, William J., McDonald, Dusty L., Sutton, Glen R.   +3 more
core  

Energy Adaptability Analysis Based on the Stall Fault of Solar Array Drive Assembly for Medium Earth Orbit Satellite

Energies
In response to the stalling fault of the solar array drive assembly (SADA) in an in-orbit MEO satellite, an analysis and research on the energy balance algorithm are conducted.
Chenjie Kong, Huan Liu, Baojun Lin, Xueliang Wang, Qiang Zhang, Yabin Wang   +5 more
doaj   +1 more source

Force–Position Coordinated Compliance Control in the Adhesion/Detachment Process of Space Climbing Robot

Aerospace
Adhesion-based space climbing robots, with their flexibility and multi-functional capabilities, are seen as a promising candidate for in-orbit maintenance.
Changtai Wen, Pengfei Zheng, Zhenhao Jing, Chongbin Guo, Chao Chen   +4 more
doaj   +1 more source

Data Mining for Simple Sequence Repeats in Oil Palm Expressed Sequence Tags [PDF]

, 2009
Expressed Sequence Tags or ESTs are small pieces of DNA sequence that are generated by sequencing either one or both ends of an expressed gene. ESTs provide researchers with a quick and inexpensive route for discovering new genes, for obtaining data on ...
Aikkal Riju, Vadivel Arunachalam
core   +1 more source

SDGSAT-1 pendulum mirror coupling control technology

International Journal of Digital Earth
Aiming at the on-orbit high-precision attitude control problem of coupling the periodic motion of the thermal infrared oscillating mirror of the Sustainable Development Scientific Goals Satellite-1 (SDG Satellite-1, SDGSAT-1) with the motion of the ...
Xianghua Xie, Yingquan Yang, Yining Wang, Lingling Yan, Bihong Fu, Liang Chang   +5 more
doaj   +1 more source

Was Dan Janzen (1977) right about aphid clones being a "super-organism", i.e. a single "evolutionary individual"? : new insights from the use of molecular marker systems [PDF]

, 2008
Dan Janzen proposed in a paper in 1977 (loc. cit.), that a clone of aphids and for that matter dandelions consists, respectively, of one large ‘super-organism’.
Loxdale, Hugh D.
core  

Microsatellite instability [PDF]

Gut, 1999
openaire   +2 more sources