An Early Design Phase Method for Characterizing and Comparing Wave Energy Converter Archetypes by Aeron Roach, Moira Meek, Raza Ali, Bryony DuPont, Bryson Roberston

“… Wave energy converters (WECs) hold promise for powering blue economy applications, but their success relies on their ability to survive in the highly energetic ocean climate. …”
Get full text

Improvement for UAV Urban SAR Tomography Based on Cylindrical Wave Model With Elevation Constraints by Rui Guo, Zishuai Ren, Yuxin Gao, Lianhuan Wei, Yuxiao Qin, Gang Xu

Get full text

Codebook Design for Parallel Dynamic Subarrays in Millimeter Wave Massive MIMO Systems by Qi Li, Fu-Chun Zheng, Ke Xu, Lianming Li

“…This paper investigates the codebook design for the novel parallel dynamic subarrays for millimeter-wave (mmWave) massive MIMO systems. To generate high-resolution patterns, we design a novel parallel dynamic subarray structure where each radio frequency (RF) chain is dynamically connected to a subarray consisting of an antenna subset from two parallel arrays. …”
Get full text

Regression-Based Networked Virtual Buoy Model for Offshore Wave Height Prediction by Eleonora M. Tronci, Matteo Vitale, Therese Patrosio, Thomas Søndergaard, Babak Moaveni, Usman Khan

“…Accurate wave height measurements are critical for offshore wind farm operations, marine navigation, and environmental monitoring. …”
Get full text

Cosmological Constraints from Combining Photometric Galaxy Surveys and Gravitational Wave Observatories by E.L. Gagnon, D. Anbajagane, J. Prat, C. Chang, J. Frieman

“…Spatial variations in survey properties due to selection effects generate substantial systematic errors in large-scale structure measurements in optical galaxy surveys on very large scales. …”
Get full text

Physics-informed Priors Improve Gravitational-wave Constraints on Neutron-star Matter by Spencer J. Magnall, Christian Ecker, Luciano Rezzolla, Paul D. Lasky, Simon R. Goode

“…Gravitational-wave astronomy shows great promise in determining nuclear physics in a regime not accessible to terrestrial experiments. …”
Get full text

Current techniques for the treatment of spasticity and their effectiveness by Hong-Xiao Li, Ke Xu, Shan-Lin Chen, Shu-Feng Wang, Wen-Jun Li

Subjects: Get full text

The Critical Role of Sea Ice Products for Accurate Wind‐Wave Simulations in the Arctic by Tyler W. Miesse, Martin Henke, Andre deSouza de Lima, Celso M. Ferreira, Thomas Ravens

“…Our study provides insights for selecting sea ice products under different sea ice conditions for accurately simulating waves and coastal hazards in high latitudes.…”
Get full text

Design of a millimeter-wave wideband filtering balun in GaAs IPD technology by Yijun Li, Jinxuan Ni, Siyu Li, Qian Han, Jie Tian, Na Li, Tianye Ma

“…This article introduces a novel microstrip filtering balun designed using GaAs Integrated-Passive-Device (IPD) technology, aimed at addressing the needs of millimeter-wave communication applications such as Wireless Personal Area Networks (WPAN) and Wireless Local Area Networks (WLAN). …”
Get full text

Hybrid precoding method for mmWave MIMO systems based on limited feedback by Ruonan YOU, Peng PAN, Dan ZHANG, Haiquan WANG

“…A hybrid precoding algorithm for millimeter wave (mmWave) MIMO systems without knowledge of channel state information at the transmitter was proposed based on the limited feedback.Specifically, the joint optimization problem of analog precoding and digital precoding was firstly separated into two independent optimization problems, which correspond to the analog precoding and digital precoding respectively.Based on this analog precoding codebook, the best precoding matrix was selected by analog precoding in the designed analog precoding codebook.Secondly, according to the obtained analog precoding matrix, the digital precoding matrix was obtained through the least square method, and then, the codeword closest to it in the random vector quantization codebook was selected as the feedback digital precoding matrix.Finally, the receiver feeds the index values of the analog and digital precoding matrices back to the transmitter.Simulation results show that the proposed algorithm can achieve better balance between complexity and performance.…”
Get full text

Phase Portraits and Traveling Wave Solutions of Fokas System in Monomode Optical Fibers by Chao Tang, Zhao Li

“…Firstly, the Fokas systems are reduced to two-dimensional planar dynamic system by using the traveling wave transformation. Secondly, by selecting fixed parameters, the phase portraits are drawn by using the Maple software. …”
Get full text

Performance Analysis of a Sky-Wave Over-the Horizon Radar Simulation Tools by Zenon Saavedra, Adrian Llanes, Gonzalo Alderete Hero, Julian Di Venanzio, Ana Geogina Elias

Get full text

Propagation of acoustic wave along a hollow cylinder immersed in a liquid by Anna GRABOWSKA

“…The wave equations of displacement potentials have been solved. …”
Get full text

Numerical Study of Slamming Loads on Bow Flare of FPSO Model by Irregular Waves by Young Jun Kim, Kyong-Hwan Kim, Bo Woo Nam, Sa Young Hong, Yoon-Jin Ha

“…Numerical studies were performed to investigate bow flare slamming loads under irregular waves. To estimate the slamming forces in the simulations, two time windows were selected based on existing experimental data. …”
Get full text

Hyperspectral proximal sensing for carbonate rocks characterization in the SWIR (Short-Wave Infrared) by Indira Rodríguez Álvarez, Eduardo García-Meléndez, Montserrat Ferrer-Juliá, Wim Bakker, Juncal Altagracia Cruz, Antonio Espín de Gea

“…The hyperspectral dataset consists of a total number of 278 bands corresponding to the short-wave infrared (SWIR) wavelengths. After visual analysis and interpretation, 8 points or pixels were selected as reference spectra for image classification through the Spectral Angle Mapper (SAM) algorithm. …”
Get full text

The intelligibility of Polish speech synthesized with a new SineWave Synthesis method by Hanna GARDZIELEWSKA, Anna PREIS

“…SineWave Synthesis, (SWS), allows a significant reduction of the information carried by a speech signal representing by the dynamic spectral properties of formants selected from the natural speech. …”
Get full text

The COIVD-19 Pandemic First Wave and Copings among the Urban Patients in India by Kannappa V. Shetty, Sreevani Rentala, Dayananda Bittenahalli Omkarappa, Sanjeev Kumar Manikappa, Urmila Bamney

“…The convenient sampling technique was used to select 60 persons infected with COVID-19 during the first wave of the pandemic as sample of the study. …”
Get full text

Interference Reduction by Millimeter Wave Technology for 5G-Based Green Communications by Tin-Yu Wu, Tse Chang

“…For reduction of energy consumption, the wave therefore will select an mmWave BS with poor signal quality but without blockage to transmit data. …”
Get full text

Contrast and Predictability of Island‐Scale El Niño Influences on Hawaii Wave Climate by Sen Zhao, Ning Li, Fei‐Fei Jin, Kwok Fai Cheung, Zhaoqing Yang

“…Abstract The El Niño‐Southern Oscillation (ENSO) influences ocean wave activity across the Pacific, but its effects on island shores are modulated by local weather and selective sheltering of multi‐modal seas. …”
Get full text

Multispectral metasurface for visible transparency, infrared stealth, and mm-Wave frequency-multiplexing by Jiahao Ge, Yifeng Wang, Yaqiang Zhang, Chang Long, Xiong Wang, Cheng Zhang, Hongxing Dong, Long Zhang

“…The proposed metasurface consists of two sets of meta-atoms arranged in an interleaved configuration, enabling independent 3-bit phase modulation at two distinct millimeter-wave frequencies. Proof-of-concept experiments demonstrate the implementation of a frequency-selective bifocal metalens and a dual-channel meta-hologram using the proposed design, both of which exhibit high visible transparency and low infrared emissivity simultaneously. …”
Get full text