Results 61 to 70 of about 6,747,559 (262)

Hybrid frequency-domain CFAR detectors for cognitive radio interference resilience and the dual-use security paradox

Scientific Reports
Cognitive radio networks (CRNs) enable secondary users (SUs) to opportunistically access underutilized licensed spectrum while protecting primary users (PUs). Robust spectrum sensing under heterogeneous interference and heavy jamming remains challenging:
Mohamed Salah Shams, Ahmed A. Abouelfadl, Ahmed Mansour, Mohamed Samir Abdel Latif Soliman   +3 more
doaj   +1 more source

Analysis of a Pareto Mixture Distribution for Maritime Surveillance Radar

Journal of Electrical and Computer Engineering, 2012
The Pareto distribution has been shown to be an excellent model for X-band high-resolution maritime surveillance radar clutter returns. Given the success of mixture distributions in radar, it is thus of interest to consider the effect of Pareto mixture ...
Graham V. Weinberg, Daniel Finch
doaj   +1 more source

Circular Innovations in Complex Systems: A Blueprint of Four Design Archetypes

Business Strategy and the Environment, EarlyView.
ABSTRACT Circular innovations (CI), defined as the redesign of products, services or practices to minimise waste, reduce resource use and regenerate natural systems, are essential for advancing the circular economy. Despite growing recognition, their deployment in systems of linked parts with unpredictable interactions (complex systems) remains limited
Sophie Führer, Lucas Miehé, Catharina Bening   +2 more
wiley   +1 more source

Design and Implementation of an X-Band 1-Bit Reconfigurable Transmitarray System with a Space-Time Coding Scheme [PDF]

Journal of Electromagnetic Engineering and Science
This paper proposes a 1-bit reconfigurable transmitarray system operating in the X-band that is capable of implementing a space-time coding scheme. The proposed transmitarray consists of a 10×10 array of unit cells, each exhibiting high transmission ...
Sung-Geon Kim, Inhwan Kim, Youngjae Yu, Ic-Pyo Hong, Kyung-Won Lee, Sunghun Jung, Myung-Sik Lee, Jong-Gwan Yook   +7 more
doaj   +1 more source

Journey to Net‐Zero and Investment in Renewable Energy: Evidence From Developed and Developing Countries

Business Strategy and the Environment, EarlyView.
ABSTRACT This study examines how geopolitical risk, high‐technology exports and the Paris Agreement shape investment in renewable energy across developed and developing economies. Drawing on structural contingency theory, we conceptualise renewable energy investment as a country‐level response to external contingencies and analyse a global panel of 100
Tianqi Luo, Konstantinos Baltas, Ranadeva Jayasekera, Thanos Papadopoulos, Gazi Salah Uddin, Donghyun Park   +5 more
wiley   +1 more source

Adaptive frequency-domain CFAR for robust spectrum sensing under jamming and administrator-controlled counter-access

Scientific Reports
Cognitive radio networks (CRN) enable secondary users (SUs) to opportunistically access underutilized licensed spectrum while protecting primary users (PUs) from interference.
Mohamed Salah Shams, Ahmed A. Abouelfadl, Ahmed Mansour, Mohamed Samir Abdel Latif Soliman   +3 more
doaj   +1 more source

A conversation with James V. Zidek

Canadian Journal of Statistics, EarlyView.
AbstractThis article documents a series of exchanges between the authors and the senior Canadian statistician Jim Zidek in early 2026. The interview traces his life trajectory, surveying his principal contributions to statistics while offering insights into his motivations, successes, and challenges. Zidek is a Fellow of the Royal Society of Canada and
Christian Genest, Nancy E. Heckman
wiley   +1 more source

Psychological stress during wartime and its association with seizure‐related emergency department utilization

Epilepsia, EarlyView.
Abstract Objective Psychological stress is commonly reported as a seizure precipitant in epilepsy, yet evidence from major crises remains limited and inconsistent. We examined whether the October 2023 Israel–Hamas conflict affected acute seizure‐related healthcare utilization among adults with epilepsy. Methods We conducted a retrospective cohort study
Anda Eilam, Mahdi Arar, Yacov Balash, Volodymyr Samogalskyi, Merav Greenstein, Michael Zouari, Nadejda Khmelev   +6 more
wiley   +1 more source

Status epilepticus: Updates on mechanisms and treatments

Epilepsia Open, EarlyView.
Abstract Status epilepticus (SE) consists of prolonged, self‐sustaining seizures and is a common neurological emergency that causes respiratory compromise and neuronal injury. Without prompt treatment, the seizures can become resistant to benzodiazepines, leading to the progressive evolution of established, refractory, and super‐refractory SE.
Suchitra Joshi, Jaideep Kapur
wiley   +1 more source

Design and Analysis of an Adjustable Diode-Integrated Waveguide-Based Electromagnetic Pulse Limiter for Microwave Receiver

IEEE Access
A new waveguide-based diode limiter is proposed to protect microwave-amplifying receivers from high-power electromagnetic pulses. The diode limiter was designed and fabricated to exhibit low insertion loss for normal signals while effectively blocking ...
Jeong-Min Woo, Jung Ho Kim, Jong-Hyo Won, Dongho Yu   +3 more
doaj   +1 more source