Results 61 to 70 of about 337,357 (338)

Bistatic synthetic aperture radar using GNSS as transmitters of opportunity [PDF]

open access: yes, 2012
The thesis summarizes the research on the feasibility investigation of Space-Surface (i.e. a spaceborne transmitter and an airborne receiver) Bistatic Synthetic Aperture Radar (SSBSAR)with a Global Navigation Satellite System (GNSS) which is used as a ...
Zuo, Rui
core  

Diversity and complexity in neural organoids

open access: yesFEBS 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

The First Step of AI in LEO SOPs: DRL-Driven Epoch Credibility Evaluation to Enhance Opportunistic Positioning Accuracy

open access: yesRemote Sensing
Low Earth orbit (LEO) signal of opportunity (SOP) positioning relies on the accumulation of epochs obtained through prolonged observation periods. The contribution of an LEO satellite single epoch to positioning accuracy is influenced by multi-level ...
Jiaqi Yin   +6 more
doaj   +1 more source

Inter-frame Ambiguity Analysis and Suppression of LTE Signal for Passive Radar

open access: yesLeida xuebao, 2018
Long Term Evolution (LTE) is a new type of illuminators of opportunity for passive radars, with the advantages of broad bandwidth, high coverage, and strong generality.
Wang Benjing   +3 more
doaj   +1 more source

Epigenetic blind spots – the role of DNA methylation dynamics in stem cell‐based models of embryogenesis

open access: yesFEBS Letters, EarlyView.
Embryo‐like structures (stembryos) are an innovative tool, but they are hindered by experimental variability and limited developmental potential. DNA methylation is crucial for mammalian development, but its status in stembryo models is poorly characterized.
Sara Canil   +4 more
wiley   +1 more source

Survey on positioning technology based on signal of opportunity from low earth orbit

open access: yesFrontiers in Physics
Positioning, Navigation, and Timing (PNT) services are essential for supporting various aspects of modern society. Fields such as communications, transportation, and military operations heavily rely on accurate and reliable PNT services, with this ...
Jiawei He   +9 more
doaj   +1 more source

Testing and Evaluation of Wi-Fi RTT Ranging Technology for Personal Mobility Applications

open access: yesSensors, 2023
The rapid growth in the technological advancements of the smartphone industry has classified contemporary smartphones as a low-cost and high quality indoor positioning tools requiring no additional infrastructure or equipment.
Manos Orfanos   +6 more
doaj   +1 more source

Pollution prevention opportunity assessment approach, training, and technical assistance for DOE contractors. FY 1995 report [PDF]

open access: yes, 1996
The Department of Energy and its contractors are faced with environmental concerns and large waste management costs. Federal legislation and DOE Orders require sites to develop waste minimization/pollution prevention programs.
Pemberton, S.
core   +1 more source

From mice to humans—divergent strategies for intestinal homeostasis and regeneration

open access: yesFEBS Letters, EarlyView.
Recent advances such as organoid genome editing, xenotransplantation, imaging, and whole‐genome sequencing have enabled direct studies of human intestinal stem cells (ISCs). These studies reveal species‐specific features, including slower ISC proliferation, distinct injury responses, slower somatic mutation accumulation in humans, and an inverse ...
Keiko Ishikawa   +2 more
wiley   +1 more source

Cramér–Rao lower bound for ATSC signal‐based passive radar systems

open access: yesElectronics Letters, 2019
In multistatic passive radar systems, the Cramér–Rao lower bound (CRLB) can be used to select the optimal illuminator of opportunity so that it provides the best estimation accuracy for target parameters.
M. Alslaimy, G.E. Smith
doaj   +1 more source

Home - About - Disclaimer - Privacy