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1,657 Results Found

  • Article
  • Open Access
1 Citations
1,657 Views
21 Pages

A Mathematical Method for Predicting Tunnel Pressure Waves Based on Train Wave Signature and Graph Theory

  • Xu Zhang,
  • Haiquan Bi,
  • Honglin Wang,
  • Yuanlong Zhou and ,
  • Nanyang Yu,
  • Jizhong Yang and
  • Yao Jiang
  • + 2 authors+ 0 author

23 July 2025

Previous research has demonstrated that the Train Wave Signature (TWS) method enables rapid calculation of pressure waves in straight tunnels. However, its application to subway tunnels with complex structural features remains insufficiently explored...

(This article belongs to the Section E: Applied Mathematics)
  • Article
  • Open Access
8 Citations
4,064 Views
11 Pages

18 September 2021

The South China Sea (SCS) summer monsoon (SCSSM) onset signifies the commencement of large-scale summer monsoon over East Asia and the western North Pacific (WNP). Previous studies on the influencing factors of the SCSSM onset mainly focus on the tro...

(This article belongs to the Section Meteorology)
  • Article
  • Open Access
15 Citations
3,893 Views
19 Pages

28 February 2023

A 600-km/h maglev train can effectively close the speed gap between civil aviation and rail-based trains, thereby alleviating the conflict between the existing demand and actual capacity. However, the hazards caused by the micro-pressure wave amplitu...

(This article belongs to the Special Issue Advances in Aerodynamics of Railway Train/Tunnel System)
  • Article
  • Open Access
4 Citations
2,393 Views
21 Pages

16 August 2024

The initial compression wave induced by a 400 km/h high-speed train entering a tunnel in two cases (offset running and center running) is investigated by overset mesh technology. The governing equations of the IDDES model for three-dimensional, unste...

(This article belongs to the Special Issue Aerodynamics of High-Speed Trains)
  • Article
  • Open Access
7 Citations
2,989 Views
17 Pages

Massive MIMO technology is among the most promising solutions for achieving higher gain in 5G millimeter-wave (mmWave) channel models for high-speed train (HST) communication systems. Based on stochastic geometry methods, it is fundamental to accurat...

(This article belongs to the Special Issue Channel Measurements, Modelling and Simulations for Future Wireless Communication Systems)
  • Article
  • Open Access
2 Citations
3,042 Views
15 Pages

8 March 2019

Previous studies have indicated that a high-level wave train from the tropical Indo–Western Pacific to East Asia (IWP-EA, expressed as geopotential height at 200 hPa) is triggered by dipolar convective activity anomalies over the IWP during the...

(This article belongs to the Section Meteorology)
  • Article
  • Open Access
25 Views
33 Pages

6 November 2026

This study investigates the influence of subsoil material heterogeneity on the dynamic performance of a five-span road viaduct with spans crossing different ground zones, including native subsoil and compacted, mechanically stabilized road-substructu...

(This article belongs to the Special Issue Modeling and Simulation of Dynamic Damage and Failure of Materials and Structures—Second Edition)
  • Article
  • Open Access
6 Citations
3,084 Views
13 Pages

Relationship Between Muscle Tone and Elasticity: Simultaneous Quantitative Assessment Using Train-of-Four Monitoring and Continuous Shear Wave Elastography During Anesthesia Induction—A Prospective Observational Study

  • Hitoshi Shitara,
  • Tadanao Hiroki,
  • Ren Koda,
  • Tsuyoshi Sasaki and ,
  • Masataka Kamiyama,
  • Ryosuke Miyamoto,
  • Kurumi Nakase,
  • Fukuhisa Ino,
  • Takuma Kachi and
  • Hirotaka Chikuda
  • + 9 authors+ 4 authors

Background/Objectives: Non-invasive evaluations of muscle elasticity and tone are crucial in musculoskeletal medicine. Shear wave elastography (SWE) provides quantitative assessments of muscle elasticity, whereas train-of-four (TOF) monitoring measur...

(This article belongs to the Special Issue Medical Imaging in Diagnosis, Prevention and Rehabilitation of Musculoskeletal Injuries)
  • Article
  • Open Access
8 Citations
5,353 Views
14 Pages

26 July 2018

A 2D nonlinear numerical wave flume is developed to investigate the wave train impact on a vertical seawall. Fully nonlinear kinematic and dynamic boundary conditions are satisfied on the instantaneous free surface. Cases of single-, double- and mult...

(This article belongs to the Special Issue The Application of Hydrologic Analysis in Disaster Prevention)
  • Article
  • Open Access
6 Citations
3,056 Views
22 Pages

Phase Convergence and Crest Enhancement of Modulated Wave Trains

  • Hidetaka Houtani,
  • Hiroshi Sawada and
  • Takuji Waseda

11 August 2022

The Akhmediev breather (AB) solution of the nonlinear Schrödinger equation (NLSE) shows that the maximum crest height of modulated wave trains reaches triple the initial amplitude as a consequence of nonlinear long-term evolution. Several fully...

(This article belongs to the Special Issue Nonlinear Wave Hydrodynamics, Volume II)
  • Article
  • Open Access
1,484 Views
9 Pages

24 August 2025

It is well known that for low-intensity incident light within a certain frequency range, the stopping voltage of the photoelectric effect is independent of the intensity but dependent on the frequency of the light, which is described by the equation...

(This article belongs to the Section Optical Interaction Science)
  • Article
  • Open Access
6 Citations
3,745 Views
14 Pages

Amplitude modulation of a propagating wave train has been observed in various media including hydrodynamics and optical fibers. The notable difference of the propagating wave trains in these media is the magnitude of the nonlinearity and the associat...

(This article belongs to the Special Issue Nonlinear Wave Hydrodynamics)
  • Article
  • Open Access
2 Citations
3,886 Views
16 Pages

12 October 2019

The codebook-based beamforming for millimeter-wave (mm Wave) communication systems is usually used to compensate the severe attenuation of the mm Wave region. The beam training process based on pre-specified beam codebooks is considered a global opti...

  • Article
  • Open Access
6 Citations
4,907 Views
12 Pages

Modulating Consciousness through Awareness Training Program and Its Impacts on Psychological Stress and Age-Related Gamma Waves

  • Kin Cheung (George) Lee,
  • Junling Gao,
  • Hang Kin Leung,
  • Bonnie Wai Yan Wu and ,
  • Adam Roberts,
  • Thuan-Quoc Thach and
  • Hin Hung Sik
  • + 2 authors+ 0 author

17 January 2024

Aging often leads to awareness decline and psychological stress. Meditation, a method of modulating consciousness, may help individuals improve overall awareness and increase emotional resilience toward stress. This study explored the potential influ...

(This article belongs to the Special Issue The Role of Consciousness in Coupling Emotions, Motivations, and Behaviors)
  • Article
  • Open Access
9 Citations
4,209 Views
14 Pages

Design of a Low-Order FIR Filter for a High-Frequency Square-Wave Voltage Injection Method of the PMLSM Used in Maglev Train

  • He Zhao,
  • Liwei Zhang,
  • Jie Liu,
  • Chao Zhang and ,
  • Jiao Cai and
  • Lu Shen
  • + 1 author+ 0 author

In position sensorless control based on a high-frequency pulsating voltage injection method, filters are used to complete the extraction of high-frequency response signals for position observation. A finite impulse response (FIR) filter has the advan...

(This article belongs to the Special Issue Advanced Control Systems for Electric Drives)
  • Article
  • Open Access
2 Citations
2,423 Views
19 Pages

Background: Absence epilepsy is a non-convulsive form of genetic generalized epilepsy characterized by spontaneous bilateral spike-and-wave discharges (SWDs) in EEG. In contrast to grand-mal epilepsy, absence epilepsy without greatly expressed motor...

(This article belongs to the Special Issue Diagnostic Imaging in Neurological Diseases)
  • Article
  • Open Access
19 Citations
9,514 Views
26 Pages

24 February 2020

The 24 GHz continuous-wave (CW) Doppler radar sensor (DRS) is widely used for measuring the instantaneous speed of moving objects by using a non-contact approach, and has begun to be used in train-borne movable speed measurements in recent years in C...

(This article belongs to the Section Physical Sensors)
  • Systematic Review
  • Open Access
441 Views
22 Pages

Effects of Dynamic Resistance Training on Arterial Stiffness Assessed by Pulse Wave Velocity: A Systematic Review and Meta-Analysis

  • Ricardo Cordeiro,
  • Michel Oliveira,
  • Bruno Oliveira,
  • Sabrina Santos and ,
  • Jeferson Rocha,
  • José Cristiano Paes Leme da Silva and
  • Paulo Farinatti
  • + 2 authors+ 0 author

Arterial stiffness predicts cardiovascular risk, but the chronic effects of dynamic resistance training (RT) remain unclear. This meta-analysis quantified RT effects on arterial stiffness assessed by pulse wave velocity (PWV) and explored moderators....

(This article belongs to the Special Issue Optimizing Exercise Interventions for Cardiovascular Health: From Prescription to Personalization)
  • Article
  • Open Access
24 Citations
8,561 Views
25 Pages

A Statistical Method for Exploratory Data Analysis Based on 2D and 3D Area under Curve Diagrams: Parkinson’s Disease Investigation

  • Olga Sergeevna Sushkova,
  • Alexei Alexandrovich Morozov,
  • Alexandra Vasilievna Gabova,
  • Alexei Vyacheslavovich Karabanov and
  • Sergey Nikolaevich Illarioshkin

9 July 2021

A statistical method for exploratory data analysis based on 2D and 3D area under curve (AUC) diagrams was developed. The method was designed to analyze electroencephalogram (EEG), electromyogram (EMG), and tremorogram data collected from patients wit...

(This article belongs to the Special Issue On the Applications of EMG Sensors and Signals)
  • Article
  • Open Access
11 Citations
3,016 Views
21 Pages

14 December 2024

This paper presents a comprehensive method for analyzing prestressed concrete bridges subjected to multiple concurrent dynamic loads, incorporating soil–structure interaction (SSI) and seismic wave propagation effects. The study develops a comp...

(This article belongs to the Special Issue Inspection and Monitoring Techniques for Bridges and Civil Structures, 2nd Edition)
  • Article
  • Open Access
7 Citations
3,020 Views
14 Pages

Incorporating MIMO technology with 3D geometry-based stochastic models (GBSM) is a promising channel modeling technique for 5G and beyond. These models could be extended to high-speed train (HST) environments at mmWave bands. In this paper, the propo...

(This article belongs to the Section Microwave and Wireless Communications)
  • Article
  • Open Access
807 Views
15 Pages

Research on the Identification Method of Traveling Wave Double Peaks Under Impedance Mismatch of Rail Transit Train Cables

  • Chongming Wang,
  • Jianhai Chen,
  • Yinqiang Xiang,
  • Shun Zhang and ,
  • Jinguo Lu and
  • Jialiang Huang
  • + 1 author+ 0 author

30 October 2025

Accurate fault localization in rail transit train cables is hindered by impedance mismatch, which induces overshoot interference and attenuates reflected signals, causing traditional peak-detection methods to fail. This study proposes a novel traveli...

  • Article
  • Open Access
1 Citations
4,583 Views
18 Pages

5 June 2018

The interaction of a developed train of gravity deep water waves with suddenly applied winds is investigated in this manuscript. The direction of the wind is the same as that of the wave train (i.e., following) and its imposed surface shear stress is...

  • Article
  • Open Access
42 Citations
6,821 Views
20 Pages

20 February 2019

In this study, the large-scale circulation patterns (a blocking high, wave trains and the western Pacific subtropical high (WPSH)) associated with a wide ranging and highly intense long-lived heatwave in China during the summer of 2018 are examined u...

(This article belongs to the Special Issue Large-Scale Atmospheric Circulation Variability and Its Climate Impacts)
  • Article
  • Open Access
6 Citations
3,029 Views
22 Pages

Characterization of Shallow Ground in Railway Embankments Using Surface Waves Measured by Dark Fiber Optics Sensors: A Case Study

  • Edwin Obando Hernandez,
  • Paul Hölscher,
  • Pieter Doornenbal,
  • Cees-jan Mas and ,
  • Joost van ‘t Schip and
  • Agnes van Uitert
  • + 1 author+ 0 author

25 November 2023

For the maintenance of railways on soft soils, accurate knowledge of the subsoil conditions is essential. Soft soils at shallow depths have high variability; thus, high spatial resolution is required. Spare telecommunication fiber-optic cables, known...

(This article belongs to the Special Issue Distributed Fibre Optic Sensing Technologies and Applications)
  • Article
  • Open Access
15 Citations
4,907 Views
21 Pages

19 June 2022

The characteristics of the aerodynamic effects of high-speed trains passing in a shield tunnel were studied using the three-dimensional, compressible, unsteady Reynolds-averaged Navier-Stokes (RANS) equations for the simulation analysis. Numerical ca...

(This article belongs to the Section Civil Engineering)
  • Review
  • Open Access
7 Citations
3,104 Views
17 Pages

This paper is written to commemorate the 10th anniversary of academician Ye Duzheng (Yeh T.C.) pass away and his great contributions to the development of atmospheric dynamics. Under the inspiration and guidance of the theory of Rossby wave energy di...

(This article belongs to the Topic A Themed Issue in Memory of Academician Duzheng Ye (1916–2013))
  • Article
  • Open Access
13 Citations
3,057 Views
13 Pages

11 October 2022

The understanding of the occurrence of extreme waves is crucial to simulate the growth of waves in coastal regions. Laboratory experiments were performed to study the spatial evolution of the statistics of group-focused waves that have a relatively b...

(This article belongs to the Section Coastal Engineering)
  • Article
  • Open Access
7 Citations
4,262 Views
18 Pages

13 January 2024

The MPW that emits from a tunnel’s exit when a high-speed train passes through is a serious environmental problem which increases rapidly with the speed of the train. To alleviate the MPW problem at 400 km/h, the aerodynamic effects caused by t...

(This article belongs to the Special Issue Traffic Noise and Vibrations in Public Transportation Systems)
  • Article
  • Open Access
11 Citations
4,975 Views
17 Pages

26 February 2022

The geometrical configurations of high-speed trains and tunnels are symmetric. However, the aerodynamic pressure acting on tunnel walls induced by high-speed trains passing through is unsymmetric. The study of the aerodynamic effects produced by high...

(This article belongs to the Section A: Computer Science)
  • Article
  • Open Access
2 Citations
2,427 Views
28 Pages

24 October 2023

Unmanned aerial vehicles (UAVs) can support low-cost, highly mobile communications while making it possible to establish dedicated terrestrial networks. To overcome the pointing error (PE) and beam misalignment of millimeter-wave large-scale multiple...

  • Article
  • Open Access
4 Citations
3,084 Views
10 Pages

18 March 2021

This study aimed to investigate the effect of limb-specific resistance training on arterial stiffness in young adults. Twenty-four participants were randomly assigned to three groups: upper-limb resistance training (n = 8 (URT)), lower-limb resistanc...

(This article belongs to the Special Issue New Trends in Neuromechanics and Motor Rehabilitation)
  • Article
  • Open Access
41 Citations
4,775 Views
21 Pages

1 April 2020

X-band marine radar is an effective tool for sea wave remote sensing. Conventional physical-based methods for acquiring wave parameters from radar sea clutter images use three-dimensional Fourier transform and spectral analysis. They are limited by s...

  • Article
  • Open Access
2,553 Views
15 Pages

29 November 2023

The Gulf Stream (GS) ocean front releases intense moisture and heat to the atmosphere and regulates storm tracks and zonal jets in winter. The large-scale sea surface temperature (SST) anomaly in the central North Atlantic provides important feedback...

(This article belongs to the Section Climatology)
  • Article
  • Open Access
9 Citations
4,054 Views
12 Pages

25 February 2022

Previous studies have demonstrated the important effects of intraseasonal oscillations in the tropics on the occurrence of extreme-high-temperature events (EHTs), whereas the influence of intraseasonal oscillations in mid-high latitudes on EHTs has b...

(This article belongs to the Special Issue Extreme Weather Events and Atmospheric Circulation)
  • Article
  • Open Access
3 Citations
1,945 Views
24 Pages

6 July 2024

The study of dynamic responses and operational safety of high-speed trains under seismic excitation has increasingly relied on numerical simulation as the most effective and convenient research approach. The majority of studies only focus on single-c...

(This article belongs to the Section F: Engineering and Materials)
  • Article
  • Open Access
2 Citations
3,086 Views
15 Pages

6 October 2021

Braking time in a moving train at standard speeds has become a critical variable that increasingly concerns the industry. The present paper discusses the possible option of temperature variation to cut down the response time of the whole pneumatic br...

(This article belongs to the Section Heat and Mass Transfer)
  • Article
  • Open Access
16 Citations
4,096 Views
21 Pages

On the Evolution of Different Types of Green Water Events

  • Jassiel V. H. Fontes,
  • Irving D. Hernández,
  • Edgar Mendoza,
  • Rodolfo Silva and ,
  • Eliana Brandão da Silva,
  • Matheus Rocha de Sousa,
  • José Gonzaga,
  • Raíssa S. F. Kamezaki,
  • Lizeth Torres and
  • Paulo T. T. Esperança
  • + 5 authors+ 0 author

22 April 2021

Green water events may present different features in the initial stage of interaction with the deck of a structure. It is therefore important to investigate the evolution of different types of green water, since not all the events interact with the d...

(This article belongs to the Special Issue Advances in Coastal and Ocean Engineering)
  • Article
  • Open Access
3 Citations
6,689 Views
15 Pages

21 July 2016

The processing time for beam training in millimeter-wave (mmWave) cellular systems can be significantly reduced by a code division multiplexing (CDM)-based technique, where multiple beams are transmitted simultaneously with their corresponding Tx bea...

(This article belongs to the Special Issue Millimeter Wave Wireless Communications and Networks)
  • Article
  • Open Access
5 Citations
3,064 Views
20 Pages

Transient Flow Evolution of a Hypersonic Inlet/Isolator with Incoming Windshear

  • Simin Gao,
  • Hexia Huang,
  • Yupeng Meng,
  • Huijun Tan and ,
  • Mengying Liu and
  • Kun Guo
  • + 1 author+ 0 author

9 December 2023

In this paper, a novel flow perturbation model meant to investigate the effects of incoming wind shear on a hypersonic inlet/isolator is presented. This research focuses on the transient shock/boundary layer interaction and shock train flow evolution...

(This article belongs to the Special Issue Shock-Dominated Flow)
  • Article
  • Open Access
516 Views
27 Pages

A Method for Efficient Reproduction of Target Wave Trains Containing Freak Waves

  • Aimin Wang,
  • Dietao Ding,
  • Tao Zhou,
  • Xu Bai and
  • Daolei Wu

Freak waves can cause damage or capsize marine structures. The efficient fixed-point generation of target wave trains containing freak waves in laboratories or numerical wave tanks is a crucial method for marine structure design and disaster inversio...

(This article belongs to the Special Issue Advancements in Marine Hydrodynamics and Structural Optimization)
  • Article
  • Open Access
1,732 Views
35 Pages

Intelligent Transmission Control Scheme for 5G mmWave Networks Employing Hybrid Beamforming

  • Hazem (Moh’d Said) Hatamleh,
  • As’ad Mahmoud As’ad Alnaser,
  • Roba Mahmoud Ali Aloglah,
  • Tomader Jamil Bani Ata and ,
  • Awad Mohamed Ramadan and
  • Omar Radhi Aqeel Alzoubi
  • + 1 author+ 0 author

Hybrid beamforming plays a critical role in evaluating wireless communication technology, particularly for millimeter-wave (mmWave) multiple-input multiple-out (MIMO) communication. Several hybrid beamforming systems are investigated for millimeter-w...

(This article belongs to the Special Issue Advances in Wireless and Mobile Networking—2nd Edition)
  • Article
  • Open Access
6 Citations
3,229 Views
20 Pages

Tropical and Subtropical South American Intraseasonal Variability: A Normal-Mode Approach

  • André S. W. Teruya,
  • Víctor C. Mayta,
  • Breno Raphaldini,
  • Pedro L. Silva Dias and
  • Camila R. Sapucci

25 March 2024

Instead of using the traditional space-time Fourier analysis of filtered specific atmospheric fields, a normal-mode decomposition method was used to analyze South American intraseasonal variability (ISV). Intraseasonal variability was examined separa...

  • Article
  • Open Access
16 Citations
5,000 Views
12 Pages

Observational and reanalysis data show that the surface air temperature (SAT) over most parts of Europe in June of 2019 broke the highest temperature on record. In this study, we investigate the factors for the formation of this record-breaking high...

  • Article
  • Open Access
32 Citations
7,920 Views
20 Pages

29 December 2021

To comprehensively investigate the characteristics of aerodynamic pressures on a tunnel caused by the whole tunnel passage of a high-speed train at different speeds, we conduct a series of three-dimensional numerical simulations. Based on the field t...

(This article belongs to the Special Issue Deep Rock Mass Engineering: Excavation, Monitoring, and Control)
  • Review
  • Open Access
786 Views
22 Pages

17 May 2026

High-speed train aerodynamics have mainly been improved by passive design methods, such as streamlined noses, local fairings, and surface smoothing. These methods have achieved clear benefits, but several important aerodynamic problems remain difficu...

(This article belongs to the Special Issue Open and Closed-Loop Control Systems for Active Flow Control)
  • Article
  • Open Access
8 Citations
4,463 Views
23 Pages

Dynamic Characteristics of Unsteady Aerodynamic Pressure on an Enclosed Housing for Sound Emission Alleviation Caused by a Passing High-Speed Train

  • Haiquan Jing,
  • Xiaoyu Ji,
  • Xuhui He,
  • Shifeng Zhang and ,
  • Jichao Zhou and
  • Haiyu Zhang
  • + 1 author+ 0 author

31 January 2022

Train speed is increasing due to the development of high-speed railway technology. However, high-speed trains generate more noise and discomfort for residents, enclosed housing for sound emission alleviation is needed to further reduce noise. Because...

(This article belongs to the Special Issue New Advances in Fluid Structure Interaction)
  • Proceeding Paper
  • Open Access
85 Views
8 Pages

27 October 2026

A location-aided neural precoding scheme is proposed for millimeter-wave beamforming, where a multilayer perceptron maps receiver coordinates directly to a unit-norm complex beamforming vector, replacing instantaneous channel state information (CSI)....

  • Article
  • Open Access
1 Citations
2,209 Views
19 Pages

4 June 2024

The ground vibration caused by the operation of high-speed trains has become a key challenge in the development of high-speed railways. In order to study the train-induced ground vibration affected by geotechnical heterogeneity, an efficient frequenc...

(This article belongs to the Special Issue Numerical Modeling and Simulation in Geomechanics)
  • Article
  • Open Access
4,973 Views
29 Pages

A Pilot Study on Video Game Training Effects on Visual Working Memory: Behavioral and Neural Insights

  • Héctor Hugo Alfaro-Cortés,
  • Sulema Torres-Ramos,
  • Israel Román-Godínez,
  • Vanessa Doreen Ruiz-Stovel and
  • Ricardo Antonio Salido-Ruiz

4 February 2025

Background/Objectives: Recent research suggests that video games may serve as cognitive training tools to enhance visual working memory (VWM) capacity. However, the effectiveness of game-based cognitive training remains debated, and the underlying ne...

(This article belongs to the Special Issue Deep into the Brain: Artificial Intelligence in Brain Diseases—2nd Edition)

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