Results 101 to 110 of about 2,719,974 (280)
Oikos, EarlyView.Global changes and human activities have increased the likelihood of transport of non‐native insect species all around the globe. When established, the spread of organisms leads to the spatial sorting of the populations, progressively contributing to the selection of individuals with enhanced dispersal performance at the edges of the invaded range ...
Charly Géron +3 more
wiley +1 more source
Automatic Modulation Classification of LFM and Polyphase-coded Radar Signals [PDF]
Radioengineering, 2017 There are several techniques for detecting and classifying low probability of intercept radar signals such as Wigner distribution, Choi-Williams distribution and time-frequency rate distribution, but these distributions require high SNR. To overcome this
S. B. S. Hanbali, R. Kastantin
doaj
Sensors, 2016 Radar networks are proven to have numerous advantages over traditional monostatic and bistatic radar. With recent developments, radar networks have become an attractive platform due to their low probability of intercept (LPI) performance for target ...
Ji She, Fei Wang, Jianjiang Zhou
doaj +1 more source
Estimation of Bistatic Radar Detection Performance Under Discrete Clutter Conditions Using Stochastic Geometry [PDF]
arXiv, 2022 We propose a metric called the bistatic radar detection coverage probability to evaluate the detection performance of a bistatic radar under discrete clutter conditions. Such conditions are commonly encountered in indoor and outdoor environments where passive radars receivers are deployed with opportunistic illuminators.
arxiv
Insider trading footprints: An empirical look at detected cases in Australia
International Review of Finance, Volume 25, Issue 2, June 2025.Abstract This paper examines illegal insider trading in Australian equity markets, focusing on whether such trades leave observable footprints in prices and returns. We compile a hand‐collected dataset of identified insider‐trading incidents. Using an event‐study design, we find minimal footprints for earnings announcements and a small negative price ...
Dean Katselas, Sarah Osborne
wiley +1 more source
IET Radar, Sonar & Navigation, 2021 Frequency shift keying (FSK) signal has been widely used in modern radar systems. To intercept the FSK radar signal with a high interception probability, radar reconnaissance receiver should have an ultra‐wideband receiving ability.
Zhaoyang Qiu +5 more
doaj +1 more source
Journal of Flood Risk Management, Volume 18, Issue 2, June 2025.ABSTRACT This study aimed to develop a proof‐of‐concept prototype of a machine learning system to forecast and mitigate the effect of floods in Kasese District. The researchers used a participatory design science approach. The researchers conducted document reviews and brainstorming to obtain past climate data from the representatives of affected ...
Edward Miiro +4 more
wiley +1 more source
Cognitive MIMO Frequency Diverse Array Radar with High LPI Performance
International Journal of Antennas and Propagation, 2016 Frequency diverse array (FDA) has its unique advantage in realizing low probability of intercept (LPI) technology for its dependent beam pattern. In this paper, we proposed a cognitive radar based on the frequency diverse array multiple-input multiple ...
Ling Huang +3 more
doaj +1 more source
Development and Evaluation of a Multistatic Ultrawideband Random Noise Radar [PDF]
, 2010 This research studies the AFIT noise network (NoNET) radar node design and the feasibility in processing the bistatic channel information of a cluster of widely distributed noise radar nodes.
Nelms, Matthew E.
core +1 more source
Analysis of the Utilization of Machine Learning to Map Flood Susceptibility
Journal of Flood Risk Management, Volume 18, Issue 2, June 2025.ABSTRACT This article provides an analysis of the utilization of Machine Learning (ML) models in Flood Susceptibility Mapping (FSM), based on selected publications from the past decade (2013–2023). Recognizing the challenge that some stages of ML modeling inherently rely on experience or trial‐and‐error approaches, this work aims at establishing a ...
Ali Pourzangbar +3 more
wiley +1 more source