Results 281 to 290 of about 139,654 (335)

The PRF Chicago 2023

European Journal of Volunteering and Community-Based Projects
Denise Decaroli, Carola Cassandrin
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Real-Time Processing of Spaceborne SAR Data With Nonlinear Trajectory Based on Variable PRF

IEEE Transactions on Geoscience and Remote Sensing, 2022
Spaceborne synthetic aperture radar (SAR) real-time imaging is especially important for disaster emergencies and real-time monitoring applications with highly desired real-time requirements.
Jianlai Chen, Junchao Zhang, Yanghao Jin, Hanwen Yu, B. Liang, Degui Yang   +5 more
semanticscholar   +1 more source

Preparation of a biomimetic bi-layer chitosan wound dressing composed of A-PRF/sponge layer and L-arginine/nanofiber.

Carbohydrate Polymers, 2022
To better mimic the structure of skin tissue, the use of a multi-layered wound dressing has been proposed. In the present study, a sponge-nanofibrous bi-layer dressing is designed.
Marjan Mirhaj, M. Tavakoli, J. Varshosaz, S. Labbaf, Saeideh Salehi, A. Talebi, Nafise Kazemi, Vida Haghighi, Mansoor Alizadeh   +8 more
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Joint Frequency and PRF Agility Waveform Optimization for High-Resolution ISAR Imaging

IEEE Transactions on Geoscience and Remote Sensing, 2022
Traditional radar waveforms are easily intercepted and interfered with by enemy’s reconnaissance system with the time–frequency periodic pattern recognition.
Shaopeng Wei, Lei Zhang, Hongwei Liu
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An Efficient Track-Before-Detect for Multi-PRF Radars With Range and Doppler Ambiguities

IEEE Transactions on Aerospace and Electronic Systems, 2022
This article considers the detection and tracking of weak targets in multiple pulse repetition frequency (multi-PRF) radars using the track-before-detect (TBD) technique.
Wujun Li, Wei Yi, L. Kong, K. C. Teh
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Novel PRF schedules for medium PRF radar

2003 Proceedings of the International Conference on Radar (IEEE Cat. No.03EX695), 2004
Previous work has demonstrated that evolutionary algorithms (EAs) are an effective tool for the selection of optimal pulse repetition frequency (PRF) sets to minimise range-Doppler blindness of a medium PRF radar. This paper reconsiders the concepts of decodability in medium PRF radar, and how new and novel schedules can be generated using an EA ...
E.J. Hughes, C.M. Alabaster
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Comparison of physical, mechanical and biological effects of leucocyte-PRF and advanced-PRF on polyacrylamide nanofiber wound dressings: In vitro and in vivo evaluations.

Biomaterials Advances, 2022
Platelet-rich fibrin (PRF) is extracted from the blood without biochemical interference and, also, with the ability of a long-term release of growth factors that can stimulate tissue repair and regerenation.
Marjan Mirhaj, Saeideh Salehi, M. Tavakoli, J. Varshosaz, S. Labbaf, Shaghayegh Amini Mosleh Abadi, Vida Haghighi   +6 more
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Medium PRF radar PRF optimisation using evolutionary algorithms

Proceedings of the 2003 IEEE Radar Conference (Cat. No. 03CH37474), 2004
In this paper we employ evolutionary algorithms for the selection of optimal pulse repetition frequency (PRF) sets to minimise range-Doppler blindness in a model of a medium PRF radar. Both eight and nine PRF schedules are considered and the algorithm ensures that all the solutions produced are fully decodable and have no blind velocities.
E.J. Hughes, C.M. Alabaster
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Multilingual PRF

Proceedings of the 33rd international ACM SIGIR conference on Research and development in information retrieval, 2010
In this paper, we present a novel approach to Pseudo-Relevance Feedback (PRF) called Multilingual PRF (MultiPRF). The key idea is to harness multilinguality. Given a query in a language, we take the help of another language to ameliorate the well known problems of PRF, viz.
Manoj K. Chinnakotla, Karthik Raman, Pushpak Bhattacharyya   +2 more
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