Results 51 to 60 of about 87,325 (190)

SpaceLight: A Framework for Enhanced On-Orbit Navigation Imagery

Aerospace
In the domain of space rendezvous and docking, visual navigation plays a crucial role. However, practical applications frequently encounter issues with poor image quality.
Zhang Zhang, Jiaqi Feng, Liang Chang, Lei Deng, Dong Li, Chaoming Si   +5 more
doaj   +1 more source

Adaptive hierarchical filtering particle swarm optimization for multiple magnetic dipoles modeling of space equipment

Scientific Reports
Accurate modeling of multiple magnetic dipoles is essential for characterizing spacecraft-generated magnetic fields and mitigating their interference with sensitive onboard instruments.
Ye Liu, Xingjian Shi, Shengfeng Meng, Wenzhe Yang, Ziruo Fang, Zhiming Cai, Huawang Li   +6 more
doaj   +1 more source

Large Scale Optical Assisted Mm-Wave Beam-Hopping System for Multi-Hop Bent-Pipe LEO Satellite Networks

Applied Sciences, 2023
By introducing the arrayed waveguide router (AWGR) optical true time-delay (OTTD) architecture in bent-pipe satellite optical inter-link to optically assist the RF phased array in Low-earth orbit satellites will extend the multi-hop bent-pipe satellite ...
Shiyi Xia, Peilong Liu, Mingyang Zhao, Cheng Zou, Fengwei Shao, Jifeng Jin, Haiwang Wang, Guotong Li   +7 more
doaj   +1 more source

Microsatellite loci among Alaskan rabies hosts: Arctic and red fox [PDF]

, 2012
Little is known about the population dynamics between Arctic and red foxes in Alaska and consequences for rabies ecology. Both species carry different variants of rabies and inhabit different environments.
Renshaw, Ben
core  

AFLPs: genetic markers for paternity studies in newts (Triturus vulgaris) [PDF]

, 2006
DNA-based genetic markers can reveal paternity whenever the direct assignment of fathers to offspring is precluded by multiple matings and internal fertilisation.
Jehle, R, Sztatecsny, M, Whitlock, A
core   +2 more sources

Optimization of Test Mass Motion State for Enhancing Stiffness Identification Performance in Space Gravitational Wave Detection

Aerospace
In space gravitational wave detection, various physical effects in the spacecraft, such as self-gravity, electricity, and magnetism, will introduce undesirable parasitic stiffness.
Ningbiao Tang, Ziruo Fang, Zhongguang Yang, Zhiming Cai, Haiying Hu, Huawang Li   +5 more
doaj   +1 more source

Essentially Derived Varieties in Ornamentals [PDF]

, 2009
The concept of Essentially derived varieties (EDVs) was introduced in the UPOV 1991 act to protect the interests of the breeder of the initial variety. When a variety is considered as an EDV, authorisation for commercial exploitation is needed from the ...
Vosman, B.
core   +2 more sources

Whole genome sequencing and microsatellite analysis of the Plasmodium falciparum E5 NF54 strain show that the var, rifin and stevor gene families follow Mendelian inheritance [PDF]

, 2018
Background: Plasmodium falciparum exhibits a high degree of inter-isolate genetic diversity in its variant surface antigen (VSA) families: P. falciparum erythrocyte membrane protein 1, repetitive interspersed family (RIFIN) and subtelomeric variable ...
Bruske, Ellen, Frank, Matthias, Otto, Thomas D.   +2 more
core   +5 more sources

Systematics of the North American menhadens: molecular evolutionary reconstructions in the genus Brevoortia (Clupeiformes: Clupeidae) [PDF]

, 2007
Evolutionary associations among the four North American species of menhadens (Brevoortia spp.) have not been thoroughly investigated. In the present study, classifications separating the four species into small-scaled and large-scaled groups were ...
Anderson, Joel D.
core  

Fault Prediction for Rotating Mechanism of Satellite Based on SSA and Improved Informer

Applied Sciences
The rotational mechanism, which plays a critical role in energy supply, payload antenna pointing, and attitude stabilization in satellites is essential for the overall functionality and performance stability of the satellite.
Qing Lan, Ye Zhu, Baojun Lin, Yizheng Zuo, Yi Lai   +4 more
doaj   +1 more source