Results 71 to 80 of about 134,102,892 (221)
Solar-Terrestrial Physics, 2020 We consider the ionospheric models that are suitable for over-the-horizon HF and UHF band radars. Namely, there are three such models: the numerical model developed by IZMIRAN and Fedorov Institute of Applied Geophysics, the numerical model designed by ...
V.V. Alpatov +5 more
doaj +1 more source
RECAP Analysis: A Novel Analytical Tool for Strategic Diagnosis in Dynamic Environments
Strategic Change, EarlyView.ABSTRACT Strategic diagnosis remains a persistent challenge for managers operating in dynamic environments. Existing frameworks—from SWOT to VRIO—have been criticized for being either analytically shallow or theoretically inaccessible as practical tools.
Fernando A. F. Ferreira +2 more
wiley +1 more source
Study on the Detectability of the Sky-Surface Wave Hybrid Radar
Journal of Applied Mathematics, 2014 Working in the HF (high-frequency) band and the transmitter and receiver locating separately, the sky-surface wave hybrid radar both has the capabilities of the OTHR (over-the-horizon radar) and the advantage of the bistatic radar. As the electromagnetic
Hou Chengyu +3 more
doaj +1 more source
Sensors, 2018 To obtain the complete operational picture of the maritime situation in the Exclusive Economic Zone (EEZ) which lies over the horizon (OTH) requires the integration of data obtained from various sensors. These sensors include: high frequency surface-wave-
Dejan Nikolic +2 more
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International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.ABSTRACT Swelling of clay‐sulfate rocks is a concern in geotechnical engineering that can damage infrastructure. In the historic town of Staufen in southwest Germany, geothermal drilling into a swellable anhydrite‐bearing clay formation resulted in water inflow and subsequent swelling, triggering ground heave and damage to more than 250 houses.
Reza Mahmoudi Kouhi +4 more
wiley +1 more source
Adaptive processing method for interference cancellation in sky-wave OTHR
The Journal of Engineering, 2019 An algorithm is proposed to cancel the spatially non-stationary high-frequency (HF) interference in the returns of sky-wave over-the-horizon radar (OTHR).
Dongdong Jia, Baiqiang Zhang, Junhao Xie
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High frequency surface wave radar (HFSWR) simulator
, 2007 110 p.High Frequency (HF) - Radar ,also known as Over-The-Horizon (OTH) Radar is able to detect targets that are over the horizon up to a few hundreds kilometers, beyond the range of a conventional radar.
Teo, Mia Koon
core +1 more source
People and Nature, EarlyView.Abstract Fires are expanding in frequency and intensity worldwide due to climate change and land‐use transformations. At the same time, fire often plays a regenerative role in ecosystems. Traditional and cultural practices incorporate fire use for landscape management and landscape renewal. In this complex matrix of fire ecologies, digital technologies
Jennifer Gabrys +2 more
wiley +1 more source
Sensors, 2017 Canada’s third-generation HFSWR forms the foundation of a maritime domain awareness system that provides enforcement agencies with real-time persistent surveillance out to and beyond the 200 nautical mile exclusive economic zone (EEZ).
Anthony Ponsford +4 more
doaj +1 more source
Evaluation of Polyolefin Encapsulants for Roll‐to‐Roll Lamination Applications
Progress in Photovoltaics: Research and Applications, EarlyView.Polyolefin encapsulants, PO1 and PO3, show best compatibility with R2R lamination, balancing flow, thermal properties and aging resistance. ABSTRACT Mass Customization (MC) in photovoltaic (PV) manufacturing enables the production of diverse, cost‐effective integrated PV products through the use of semi‐fabricates.
P. Christöfl +4 more
wiley +1 more source