Search · four archives
Search · four archives
19 papers · ranked by Valyu relevance
Yan Dai, Dan Liu, Qingrong Hu, Xiaoli Yu + 4 more
'Jingyue Lu' 'Yejian Zhou'] Under the condition of low signal-to-noise ratio, the target detection performance of radar decreases, which seriously affects the tracking and recognition for the long-range small targets. To solve it, this paper proposes a target detection algorithm using convolutional neural network to…
Chen Ming, Stephanie Haro, Andrea Megela Simmons, James A. Simmons
Computational models of animal biosonar seek to identify critical aspects of echo processing responsible for the superior, real-time performance of echolocating bats and dolphins in target tracking and clutter rejection. The Spectrogram Correlation and Transformation (SCAT) model replicates aspects of biosonar imaging…
Wenlong Wei, Xiaolong Yan, Juan Cui, Ruizhi Wang + 3 more
'Chenyang Xue' 'Nam-Trung Nguyen'] Ultrasonic measurement techniques are increasingly used to measure the burning rates of solid rocket fuel, but challenges arise due to noise and signal attenuation caused by the motor’s multi-layered structure. This paper proposes an adaptive thresholding method combined with a…
Ravi Umadi
The oscillatory movements of the pinnae in constant-frequency (CF) bats have long been documented, yet their role in actively transforming echo signals has remained underexplored. Inspired by Perrine’s foundational description of Doppler effects in oscillating receivers, I hypothesised that bat ear oscillations could…
Ravi Umadi
Constant-frequency (CF) bats exhibit rapid oscillations of their external ears. Yet, the functional role of these movements has remained unresolved since their initial documentation over half a century ago. Although recent studies have demonstrated that pinna motion generates Doppler shifts, they do not explain why ear…
Shengchao Chen, Ting Shu, Huan Zhao, Guo Zhong + 1 more
Meteorological radar reflectivity data (i.e. radar echo) significantly influences precipitation prediction. It can facilitate accurate and expeditious forecasting of short-term heavy rainfall bypassing the need for complex Numerical Weather Prediction (NWP) models. In comparison to conventional models, Deep Learning…
Esther G. Sarabia, Jose R. Llata, Sandra Robla, Carlos Torre-Ferrero + 1 more
'Juan P. Oria'] In this work, an analysis of the transmission of ultrasonic signals generated by piezoelectric sensors for air applications is presented. Based on this analysis, an ultrasonic response model is obtained for its application to the recognition of objects and structured environments for navigation by…
Maria J. Guerrero, Camilo Sánchez-Giraldo, Cesar A. Uribe, Víctor M. Martínez-Arias + 1 more
Changes in land use and climate change threaten global biodiversity and ecosystems, calling for the urgent development of effective conservation strategies. Recognizing landscape heterogeneity, which refers to the variation in natural features within an area, is crucial for these strategies. While remote sensing images…
Yu Teshima, Yasufumi Yamada, Takao Tsuchiya, Olga Heim + 1 more
'Shizuko Hiryu'] Background Echolocating bats use echo information to perceive space, control their behavior, and adjust flight navigation strategies in various environments. However, the echolocation behavior of bats, including echo information, has not been thoroughly investigated as it is technically difficult to…
Wouter Jansen, Jan Steckel
Echolocation is the prime sensing modality for many species of bats, who show the intricate ability to perform a plethora of tasks in complex and unstructured environments. Understanding this exceptional feat of sensorimotor interaction is a key aspect into building more robust and performant man-made sonar sensors. In…
Jiaxin Gao, Honghua Chen, Mingxuan Fang, Nai Ding + 1 more
'Manuel S. Malmierca'] Speech recognition crucially relies on slow temporal modulations (<16 Hz) in speech. Recent studies, however, have demonstrated that the long-delay echoes, which are common during online conferencing, can eliminate crucial temporal modulations in speech but do not affect speech intelligibility.…
Alex Turpin, Valentin Kapitány, Jack Radford, Davide Rovelli + 4 more
'Kevin J. Mitchell' 'Ashley Lyons' 'Ilya Starshynov' 'Daniele Faccio'] Echo-location is a broad approach to imaging and sensing that includes both man-made RADAR, LIDAR, SONAR and also animal navigation. However, full 3D information based on echo-location requires some form of scanning of the scene in order to provide…
Authors not listed
An interpretive graphical framework is presented for rationalizing charge-transfer phenomena at molecule–graphene interfaces. Inspired by the classical van Arkel–Ketelaar diagram, the model unifies n- and p-doping pathways within a single representation by explicitly distinguishing between integer charge transfer (ICT)…
Ravindra Pethiyagoda, Scott W. McCue, Timothy J. Moroney
A spectrogram is a useful way of using short-time discrete Fourier transforms to visualise surface height measurements taken of ship wakes in real world conditions. For a steadily moving ship that leaves behind small-amplitude waves, the spectrogram is known to have two clear linear components, a sliding-frequency mode…
Wouter Jansen, Jan Steckel
In this paper, we introduce SonoNERFs, a novel approach that adapts Neural Radiance Fields (NeRFs) to model and understand the echolocation process in bats, focusing on the challenges posed by acoustic data interpretation without phase information. Leveraging insights from the field of optical NeRFs, our model, termed…
Authors not listed
Rapid and robust simulation of chemical processes is critical to conduct process design, optimization, techno-economic analysis, and sustainability analysis. Yet, efficiently solving simulation models remains a challenge due to the highly coupled and nonlinear nature of the underlying algebraic equations that capture…
Sebastian Höhna, Tracy A. Heath, Bastien Boussau, Michael J. Landis + 2 more
'Fredrik Ronquist' 'John P. Huelsenbeck'] Recent years have seen a rapid expansion of the model space explored in statistical phylogenetics, emphasizing the need for new approaches to statistical model representation and software development. Clear communication and representation of the chosen model is crucial for…
Authors not listed
A thorough understanding of drug pharmacokinetics and target interaction within complex biological environments is critical for successful drug discovery. Quantitative matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDI MSI; qMSI) presents a promising avenue for such investigations. While…
Xia Wang, Zeyu Liu, Jiaojiao Wang, Tian Lu + 3 more
The stable precursor C18Br6 is of more practical significance than the refreshing but elusive cyclo[18]carbon (C18) at present, and molecular aromaticity caused by π-electron delocalization is an important issue of interest for this unusual molecule. In this paper, the electronic structure and bonding character of the…