Results 91 to 100 of about 6,256 (242)

A Novel Frequency Scanning Variable PRI Imaging Mode for Ultrawide Continuous Swath Spaceborne SAR Imaging

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Digital beamforming (DBF) technique in elevation and variable pulse repetition interval (PRI) technique in azimuth are used to achieve ultrawide continuous swath imaging in synthetic aperture radar (SAR).
Ruizhen Song, Wei Wang, Yongwei Zhang, Yuwei Wu, Weidong Yu   +4 more
doaj   +1 more source

Field evaluations of thermal optics and tracking tunnels for small mammal surveys at airports and grass dominated habitats

Wildlife Society Bulletin, EarlyView.
Small mammal survey tools are needed at airports to help inform aircraft strike‐risk management. We evaluated thermal optics and tracking tunnels as small mammal survey tools. We conclude that thermal optics would not be a viable survey tool for mouse‐sized mammals (19‐41 g) at airfields and other thick grass habitats unless grass height was maintained
Aaron B. Shiels, Hunter Ray, Travis L. Guerrant, Craig K. Bloomquist, Scott F. Beckerman   +4 more
wiley   +1 more source

Modelling the Four‐Dimensional Power Line Sag Dynamics by Point Signature in Time‐Series Synthetic‐Aperture Radar Images

High Voltage, EarlyView.
ABSTRACT Power lines in synthetic‐aperture radar (SAR) images are reflected as point signatures, which fluctuate annually in both the azimuth and range directions. A novel framework is proposed in this paper to evaluate the four‐dimensional dynamic status of power line sag using those point signatures in time‐series SAR images.
Sijie Ma, Tao Li, Mahdi Motagh, Yan Liu, Yangmao Wen   +4 more
wiley   +1 more source

Inter-Channel Error Calibration Method for Real-Time DBF-SAR System Based on FPGA

Sensors
Elevation Digital Beamforming (DBF) technology is key to achieving high-resolution wide-swath (HRWS) imaging in spaceborne Synthetic Aperture Radar (SAR) systems.
Yao Meng, Jinsong Qiu, Pei Wang, Yang Liu, Zhen Yang, Yihai Wei, Xuerui Cheng, Yihang Feng   +7 more
doaj   +1 more source

How do supermarkets shape the experience of vulnerable people in Australia's food system? A scoping review

Nutrition &Dietetics, EarlyView.
Abstract Aims The aim of this scoping review was to synthesise how supermarkets shape health behaviours and nutrition‐related outcomes of vulnerable populations in Australia. Methods Five databases were searched and studies were included if they discussed Australia's major supermarket chains, their relationship with vulnerable populations, and outcomes
Casey E. Webb, Jeremy Farr, Nathan Cook, Olivia R. L. Wright   +3 more
wiley   +1 more source

Depositional processes of varved sediments from proglacial Lago Frías since 1800 CE (North Patagonian Andes, Argentina)

Boreas, EarlyView.
The glacierized Valle Frías in Northern Patagonia is one of the best‐studied valleys in South America and includes varved sediments from Lago Frías. We complement this lacustrine record with a high‐resolution documentation of varve counts and their composition.
Bernd Zolitschka, Philipp Böning, A. Catalina Gebhardt, M. Alicia Irurzun, Wojciech Tylmann, Christoph Vogt, Claudia S. G. Gogorza   +6 more
wiley   +1 more source

Evaluating harvest risk with limited data: A case study on polar bears (Ursus maritimus) in East Greenland

Conservation Science and Practice, EarlyView.
We developed a state‐dependent modeling and management framework to evaluate the demographic effects of different harvest strategies on the East Greenland polar bear subpopulation. This paper is for scientists undertaking wildlife harvest risk assessments for conservation and management, and for wildlife managers responsible for establishing ...
Eric V. Regehr, Kristin L. Laidre, Fernando Ugarte   +2 more
wiley   +1 more source

SNAP/WIC‐Participating Mothers' Experiences Navigating Family Nutrition in Greater Boston During Pandemic Recovery

Family Relations, EarlyView.
ABSTRACT Objectives To examine factors influencing family nutrition decision‐making among mothers participating in nutrition assistance programs. Background During the COVID‐19 pandemic and recovery period, the Supplemental Nutrition Assistance Program (SNAP) and the Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) were ...
Thanit Vinitchagoon, Ana Maafs‐Rodríguez, Rebecca C. Fauth, Fang Fang Zhang, Erin Hennessy, Christina D. Economos   +5 more
wiley   +1 more source

Catheter Ablation: Evolution and Efficiencies

Journal of Cardiovascular Electrophysiology, EarlyView.
ABSTRACT The present review includes a discussion the goals and pitfalls of efficiency in the medical profession, a historical perspective on the evolution of catheter ablation in the field of electrophysiology (EP), and the data regarding the relationship between efficiency and outcomes in the EP lab. Focus on efficacy is critical to maximize resource
Aravind G. Kalluri, Bradley P. Knight
wiley   +1 more source

A Novel PRI Variation Strategy for Range Ambiguity Suppression in Quad-Pol Staggered Spaceborne SAR Based on Azimuth Phase Coding

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Staggered synthetic aperture radar (SAR) is compatible with quadrature-polarimetric (quad-pol) SAR, enabling ultrawide continuous swath quad-pol SAR imaging with fine azimuth resolution.
Ruizhen Song, Wei Wang, Yongwei Zhang, Yuwei Wu, Weidong Yu   +4 more
doaj   +1 more source