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214 Results Found

  • Feature Paper
  • Article
  • Open Access
2 Citations
4,679 Views
10 Pages

29 June 2022

For assessment of the insulation performance of high-voltage (HV) equipment installed in extra-high-voltage (EHV) systems, switching impulse voltage tests are performed in an HV testing laboratory. The waveform parameters of the switching impulse vol...

  • Feature Paper
  • Article
  • Open Access
1 Citations
1,445 Views
14 Pages

Evaluation of the Influence of Surface Roughness Parameters on Ultrasonic Rayleigh Waveforms

  • Karol Grochalski,
  • Jakub Kowalczyk,
  • Marian Jósko and
  • Michal Wieczorowski

11 November 2024

Ultrasonic nondestructive testing is widely used not only in the laboratory, but also in industry. The tests use various types of ultrasonic waves, diverse measurement techniques and different apparatus. One of the problems encountered is the high su...

  • Article
  • Open Access
8 Citations
3,121 Views
22 Pages

Characteristics of Acoustic Emission Waveforms Induced by Hydraulic Fracturing of Coal under True Triaxial Stress in a Laboratory-Scale Experiment

  • Nan Li,
  • Liulin Fang,
  • Bingxiang Huang,
  • Peng Chen,
  • Chao Cai,
  • Yunpeng Zhang,
  • Xuan Liu,
  • Zhihuai Li,
  • Yaolin Wen and
  • Yanli Qin

16 January 2022

Hydraulic fracturing (HF) is an effective technology to prevent and control coal dynamic disaster. The process of coal hydraulic fracturing (HF) induces a large number of microseismic/acoustic emission (MS/AE) waveforms. Understanding the characteris...

  • Article
  • Open Access
4 Citations
5,875 Views
11 Pages

Software for Correcting the Dynamic Error of Force Transducers

  • Naoki Miyashita,
  • Kazuhide Watanabe,
  • Kyouhei Irisa,
  • Hiroshi Iwashita,
  • Ryosuke Araki,
  • Akihiro Takita,
  • Takao Yamaguchi and
  • Yusaku Fujii

7 July 2014

Software which corrects the dynamic error of force transducers in impact force measurements using their own output signal has been developed. The software corrects the output waveform of the transducers using the output waveform itself, estimates its...

  • Communication
  • Open Access
615 Views
10 Pages

31 July 2025

The mechanisms underlying reduced deformability of red blood cells (RBCs) in Plasmodium falciparum remain unclear. The decrease in RBC deformability associated with malarial infection was measured using ektacytometry, and only mean values were evalua...

  • Article
  • Open Access
29 Citations
4,872 Views
24 Pages

16 November 2020

This paper focuses on sea surface wind speed estimation based on cyclone global navigation satellite system reflectometry (GNSS-R) data. In order to extract useful information from delay-Doppler map (DDM) data, three delay waveforms are presented for...

  • Article
  • Open Access
14 Citations
3,870 Views
13 Pages

Analytical Modeling of Acoustic Emission Signals in Thin-Walled Objects

  • Vera Barat,
  • Denis Terentyev,
  • Vladimir Bardakov and
  • Sergey Elizarov

30 December 2019

For the effective detection of acoustic emission (AE) impulses against a noisy background, the correct assessment of AE parameters, and an increase in defect location accuracy during data processing are needed. For these goals, it is necessary to con...

  • Article
  • Open Access
14 Citations
3,499 Views
17 Pages

Full Waveform Prediction of Blasting Vibration Using Deep Learning

  • Yunsen Wang,
  • Guiping Zheng,
  • Yuanhui Li and
  • Fengpeng Zhang

5 July 2022

Blasting vibration could cause dynamic instability of rock masses within a critical steady state. To control the blasting vibration, it is necessary to understand the complete dynamic response process of the rock masses under the blasting vibration....

  • Communication
  • Open Access
2 Citations
1,957 Views
7 Pages

Qualitative Evaluation of Intracranial Pressure Slopes in Patients Undergoing Brain Death Protocol

  • Mylena Miki Lopes Ideta,
  • Louise Makarem Oliveira,
  • Daniel Buzaglo Gonçalves,
  • Mylla Christie Paschoalino,
  • Nise Alessandra Carvalho ,
  • Marcus Vinicius Della Coletta,
  • Wellingson Paiva,
  • Sérgio Brasil and
  • Robson Luís Oliveira Amorim

25 February 2023

Background: Due to the importance of not mistaking when determining the brain death (BD) diagnostic, reliable confirmatory exams should be performed to enhance its security. This study aims to evaluate the intracranial pressure (ICP) pulse morphology...

  • Article
  • Open Access
29 Citations
6,205 Views
19 Pages

23 January 2022

The purpose of this research was to determine if the commercially available Perception Neuron motion capture system was valid and reliable in clinically relevant lower limb functional tasks. Twenty healthy participants performed two sessions on diffe...

  • Article
  • Open Access
778 Views
22 Pages

24 September 2025

This study aimed to evaluate the regenerative effects of various microcurrent waveforms in cast-induced gastrocnemius muscle atrophy in rabbits, integrating both in vitro and in vivo analyses. After two weeks of enforced hindlimb immobilization via c...

  • Article
  • Open Access
19 Citations
3,237 Views
21 Pages

A Multi-Objective Quantum Genetic Algorithm for MIMO Radar Waveform Design

  • Tianqu Liu,
  • Jinping Sun,
  • Guohua Wang and
  • Yilong Lu

16 May 2022

Aiming at maximizing waveform diversity gain when designing a phase-coded multiple-input multiple-output (MIMO) radar waveform set, it is desirable that all waveforms are orthogonal to each other. Hence, the lowest possible peak cross-correlation rat...

  • Article
  • Open Access
678 Views
11 Pages

23 September 2025

Background: This 2-year longitudinal study was undertaken to investigate the relationship between incidence of knee pain and ground reaction force (GRF) in stepping motion in older adults. Methods: In all, 29 older participants, aged 50 and over (11...

  • Article
  • Open Access
11 Citations
3,741 Views
18 Pages

A Waveform Image Method for Discriminating Micro-Seismic Events and Blasts in Underground Mines

  • Hui Wei,
  • Weiwei Shu,
  • Longjun Dong,
  • Zhongying Huang and
  • Daoyuan Sun

3 August 2020

The discrimination of micro-seismic events (events) and blasts is significant for monitoring and analyzing micro-seismicity in underground mines. To eliminate the negative effects of conventional discrimination methods, a waveform image discriminant...

  • Article
  • Open Access
34 Citations
7,333 Views
26 Pages

8 August 2016

Full-waveform lidar systems capture the complete backscattered signal from the interaction of the laser beam with targets located within the laser footprint. The resulting data have advantages over discrete return lidar, including higher accuracy of...

  • Article
  • Open Access
876 Views
31 Pages

Accurate Estimation of Forest Canopy Height Based on GEDI Transmitted Deconvolution Waveforms

  • Longtao Cai,
  • Jun Wu,
  • Inthasone Somsack,
  • Xuemei Zhao and
  • Jiasheng He

11 October 2025

Accurate estimation of the forest canopy height is crucial in monitoring the global carbon cycle and evaluating progress toward carbon neutrality goals. The Global Ecosystem Dynamics Investigation (GEDI) mission provides an important data source for...

  • Article
  • Open Access
21 Citations
4,911 Views
15 Pages

Data-Driven Calibration Estimation for Robust Remote Pulse-Oximetry

  • Mark van Gastel,
  • Wim Verkruysse and
  • Gerard de Haan

13 September 2019

Pulse-oximetry has become a core monitoring modality in most fields of medicine. Typical dual-wavelength pulse-oximeters estimate blood oxygen saturation (SpO2) levels from a relationship between the amplitudes of red and infrared photoplethysmograph...

  • Article
  • Open Access
6 Citations
3,351 Views
21 Pages

4 August 2022

Cardiovascular disease is the leading cause of death globally. To provide continuous monitoring of blood pressure (BP), a parameter which has shown to improve health outcomes when monitored closely, many groups are trying to measure blood pressure vi...

  • Article
  • Open Access
1 Citations
1,807 Views
20 Pages

7 January 2025

Pulse compression technology can augment the likelihood of target discernment without degradation and without amplifying system hardware requisites. However, radar-communication integrated waveforms may cause mismatches in reception due to communicat...

  • Article
  • Open Access
7 Citations
3,983 Views
20 Pages

Impact of Shale Anisotropy on Seismic Wavefield

  • Han Li,
  • Xiwu Liu,
  • Xu Chang,
  • Ruyue Wu and
  • Jiong Liu

20 November 2019

During unconventional resources exploration, ignoring shale anisotropy may lead to wrong seismic interpretations, thus affecting the accuracy and credibility of sweet spots prediction and reservoir characterization. In order to investigate the impact...

  • Article
  • Open Access
10 Citations
2,386 Views
17 Pages

Discrimination of Microseismic Events in Coal Mine Using Multifractal Method and Moment Tensor Inversion

  • Jiliang Kan,
  • Linming Dou,
  • Jiazhuo Li,
  • Shikang Song,
  • Kunyou Zhou,
  • Jinrong Cao and
  • Jinzheng Bai

Discrimination of various microseismic (MS) events induced by blasting and mining in coal mines is significant for the evaluation and forecasting of rock bursts. In this paper, multifractal and moment tensor inversion methods were used to investigate...

  • Article
  • Open Access
6 Citations
3,049 Views
21 Pages

26 January 2021

Slope and roughness are basic geophysical properties of terrain surface, and also sources of error in satellite laser altimetry systems. The full-waveform satellite laser altimeter records the complete echo waveform backscattered from the target surf...

  • Brief Report
  • Open Access
1,352 Views
13 Pages

Background: The external knee adduction moment (KAM) is an important biomechanical parameter that reflects the load on the medial tibiofemoral compartment during gait. The KAM is typically evaluated using three-dimensional motion analysis (3DMA) syst...

  • Article
  • Open Access
3 Citations
2,579 Views
19 Pages

10 May 2023

Vectorcardiography (VCG) is a valuable diagnostic tool that complements the standard 12-lead ECG by offering additional spatiotemporal information to clinicians. However, due to the need for additional measurement hardware and too many electrodes in...

  • Technical Note
  • Open Access
10 Citations
2,974 Views
15 Pages

10 January 2021

The crosshole ground penetrating radar (GPR) is a widely used tool to map subsurface properties, and inversion methods are used to derive electrical parameters from crosshole GPR data. In this paper, a probabilistic inversion algorithm that uses Mark...

  • Article
  • Open Access
2,036 Views
19 Pages

29 November 2021

Periodic calibrations of Energy Measurement Systems (EMS) installed in locomotives must be carried out to demonstrate the required accuracy established in the EN 50463-2 standard according to European Parliament and Council Directive 2008/57/EC on th...

  • Article
  • Open Access
3 Citations
3,368 Views
12 Pages

A Parametric Study of Flushing Conditions for Improvement of Angioscopy Visibility

  • Kohei Mitsuzuka,
  • Yujie Li,
  • Toshio Nakayama,
  • Hitomi Anzai,
  • Daisuke Goanno,
  • Simon Tupin,
  • Mingzi Zhang,
  • Haoran Wang,
  • Kazunori Horie and
  • Makoto Ohta

During an angioscopy operation, a transparent liquid called dextran is sprayed out from a catheter to flush the blood away from the space between the camera and target. Medical doctors usually inject dextran at a constant flow rate. However, they oft...

  • Article
  • Open Access
2 Citations
2,564 Views
25 Pages

On a Closer Look of a Doppler Tolerant Noise Radar Waveform in Surveillance Applications

  • Maximiliano Barbosa,
  • Leandro Pralon,
  • Antonio L. L. Ramos and
  • José Antonio Apolinário

15 April 2024

The prevalence of Low Probability of Interception (LPI) and Low Probability of Exploitation (LPE) radars in contemporary Electronic Warfare (EW) presents an ongoing challenge to defense mechanisms, compelling constant advances in protective strategie...

  • Article
  • Open Access
6 Citations
3,877 Views
20 Pages

Simulation of Ku-Band Profile Radar Waveform by Extending Radiosity Applicable to Porous Individual Objects (RAPID2) Model

  • Kai Du,
  • Huaguo Huang,
  • Yuyi Zhu,
  • Ziyi Feng,
  • Teemu Hakala,
  • Yuwei Chen and
  • Juha Hyyppä

19 February 2020

Similar to light detection and ranging (lidar), profile radar can detect forest vertical structure directly. Recently, the first Ku-band profile radar system designed for forest applications, called Tomoradar, has been developed and evaluated in bore...

  • Article
  • Open Access
1 Citations
2,074 Views
23 Pages

Dimensionless Parameters for Waveform Characterization of Acoustic Emission Signals: Application to Sedimentation and Soil Compression Experiments

  • Enrique Castro,
  • Gonzalo García-Ros,
  • Danny Xavier Villalva-León,
  • Julio Valenzuela,
  • Juan Francisco Sánchez-Pérez and
  • Manuel Conesa

21 November 2023

Acoustic Emission (AE) is a non-destructive evaluation method that uses transient elastic waves produced by the sudden release of mechanical energy in a material or structure. This method generates multiple AE events during testing; therefore, it is...

  • Article
  • Open Access
444 Views
18 Pages

AI-Native PHY-Layer in 6G Orchestrated Spectrum-Aware Networks

  • Partemie-Marian Mutescu,
  • Adrian-Ioan Petrariu,
  • Eugen Coca,
  • Cristian Patachia-Sultanoiu,
  • Razvan Marius Mihai and
  • Alexandru Lavric

26 November 2025

The evolution from fifth generation (5G) to sixth generation (6G) networks demands a paradigm shift from AI-assisted functionalities to AI-native orchestration, where intelligence is intrinsic to the radio access network (RAN). This work introduces t...

  • Article
  • Open Access
1,338 Views
15 Pages

Reliable Augmentation and Precise Identification of EPG Waveforms Based on Multi-Criteria DCGAN

  • Xiangzeng Kong,
  • Chuxin Wang,
  • Lintong Zhang,
  • Wenqing Zhang,
  • Shimiao Chen,
  • Haiyong Weng,
  • Nana Hu,
  • Tingting Zhang and
  • Fangfang Qu

5 November 2024

The electrical penetration graph (EPG) technique is of great significance in elucidating the mechanisms of virus transmission by piercing-sucking insects and crop resistance to these insects. The traditional method of manually processing EPG signals...

  • Article
  • Open Access
6 Citations
3,076 Views
14 Pages

Time Evolution of Partial Discharges in a Dielectric Subjected to the DC Periodic Voltage

  • Antonino Imburgia,
  • Giuseppe Rizzo,
  • Pietro Romano,
  • Guido Ala and
  • Roberto Candela

11 March 2022

Partial discharge (PD) detection can be considered one of the most useful tools for assessing the insulation conditions of the power apparatus in high-voltage systems. Under AC conditions, this analysis is widely employed in online and offline tests,...

  • Article
  • Open Access
5 Citations
1,744 Views
22 Pages

Distinguishing Compact Objects in Extreme-Mass-Ratio Inspirals by Gravitational Waves

  • Lujia Xu,
  • Shucheng Yang,
  • Wenbiao Han,
  • Xingyu Zhong,
  • Rundong Tang and
  • Yuanhao Zhang

13 January 2025

Extreme-mass-ratio inspirals (EMRIs) are promising gravitational-wave (GW) sources for space-based GW detectors. EMRI signals typically have long durations, ranging from several months to several years, necessitating highly accurate GW signal templat...

  • Article
  • Open Access
1,923 Views
17 Pages

9 October 2023

The inversion of acoustic field data to estimate geoacoustic parameters has been a prominent research focus in the field of underwater acoustics for several decades. Modal-dispersion curves have been used to inverse seabed sound speed and density pro...

  • Article
  • Open Access
35 Citations
6,137 Views
17 Pages

1 April 2021

The electrocardiogram (ECG) electrode, as a sensor, is an important part of the wearable ECG monitoring device. Natural leather is rarely used as the electrode substrate. In this paper, wearable flexible silver electrodes based on cowhide were prepar...

  • Article
  • Open Access
2 Citations
870 Views
17 Pages

Using the Injection System as a Sensor to Analyze the State of the Electronic Automotive System

  • Matej Kucera,
  • Miroslav Gutten,
  • Daniel Korenciak,
  • Michal Prazenica and
  • Tomasz N. Koltunowicz

18 September 2025

This paper presents a novel diagnostic method that employs the fuel injection system as a sensor for monitoring internal combustion engine pressure, analysing series resistance to detect connector degradation, and evaluating needle movement within th...

  • Article
  • Open Access
1 Citations
644 Views
16 Pages

A Voltage Parameter Adaptive Detection Method for Power Systems Under Grid Voltage Distortion Conditions

  • Wenzhe Hao,
  • Zhiyong Dai,
  • Guangqi Li,
  • Shuaishuai Lv,
  • Qitao Sun,
  • Nana Lu and
  • Jinke Ma

19 June 2025

Accurate voltage information is important for ensuring the safe operation of power systems and their performance evaluation. However, as distributed energy sources become more prevalent, the levels of harmonics and DC components in the power grid are...

  • Article
  • Open Access
6 Citations
3,050 Views
19 Pages

Energy Metering Integrated Circuit Behavior beyond Standards Requirements

  • Renan Quijano Cetina,
  • Yljon Seferi,
  • Steven M. Blair and
  • Paul S. Wright

12 January 2021

During the last few years, the accuracy of static electricity meters (SEM) has been questioned. Significant metering deviations with respect to a reference meter have been observed at customer premises, and laboratory experimental tests results suppo...

  • Feature Paper
  • Article
  • Open Access
1,993 Views
20 Pages

Improved Sampled Average Modulation Technique for the Modular Multilevel Converters

  • Juan Carlos Colque,
  • Ernesto Ruppert Filho and
  • José Luis Azcue

22 June 2022

In this article the improved sampled average modulation technique is proposed, this technique has 2N + 1 levels in the output voltage waveform of MMC and it is considered as of low complexity of implementation for any number of submodules per arm. Fo...

  • Article
  • Open Access
1 Citations
1,074 Views
29 Pages

8 May 2025

This study investigated the integration of detection and communication techniques. First, the fractional-order Fourier transform (FRFT) is introduced, and the golden section method, parabolic interpolation, and Brent method are applied to search for...

  • Article
  • Open Access
11 Citations
3,098 Views
20 Pages

Neural-Network-Based Ultrasonic Inspection of Offshore Coated Concrete Specimens

  • Azamatjon Kakhramon ugli Malikov,
  • Young H. Kim,
  • Jin-Hak Yi,
  • Jeongnam Kim,
  • Jiannan Zhang and
  • Younho Cho

A thin layer of protective coating material is applied on the surface of offshore concrete structures to prevent its degradation, thereby extending the useful life of the structures. The main reasons for the reduction in the protective capability of...

  • Article
  • Open Access
1 Citations
3,409 Views
10 Pages

Objectives: To investigate the value of subtypes of completely reversed flow (CRF) waveform in vertebral artery (VA) on Doppler ultrasound in differentiation occlusion from severe stenosis of the ipsilateral proximal subclavian artery (SA). Methods:...

  • Article
  • Open Access
18 Citations
5,566 Views
15 Pages

Inlet and Outlet Boundary Conditions and Uncertainty Quantification in Volumetric Lattice Boltzmann Method for Image-Based Computational Hemodynamics

  • Huidan Yu,
  • Monsurul Khan,
  • Hao Wu,
  • Chunze Zhang,
  • Xiaoping Du,
  • Rou Chen,
  • Xin Fang,
  • Jianyun Long and
  • Alan P. Sawchuk

10 January 2022

Inlet and outlet boundary conditions (BCs) play an important role in newly emerged image-based computational hemodynamics for blood flows in human arteries anatomically extracted from medical images. We developed physiological inlet and outlet BCs ba...

  • Technical Note
  • Open Access
1 Citations
2,448 Views
20 Pages

Precise Ambiguity Performance Evaluation for Spaceborne SAR with Diverse Waveforms

  • Guodong Jin,
  • Yu Wang,
  • Hui Yang,
  • Chen Song,
  • Jingkai Huang,
  • Wei Wang,
  • Yunkai Deng and
  • Daiyin Zhu

31 March 2023

The ambiguity suppression is a technical challenge for the present generation of spaceborne synthetic aperture radar (SAR) systems since this kind of suppression does not take the high spatial resolution and wide coverage into account simultaneously....

  • Article
  • Open Access
11 Citations
2,896 Views
18 Pages

15 August 2021

Rayleigh waves are very useful for ultrasonic nondestructive evaluation of structural and mechanical components. Nonlinear Rayleigh waves have unique sensitivity to the early stages of material degradation because material nonlinearity causes distort...

  • Article
  • Open Access
18 Citations
6,439 Views
21 Pages

10 August 2021

Linear frequency-modulated (LFM) signals are the most significant example of waveform used in low probability of intercept (LPI) radars, synthetic aperture radars and modern communication systems. Thus, interception and parameter estimation of the si...

  • Article
  • Open Access
2 Citations
7,339 Views
15 Pages

Ultrasound Evaluation of Extracranial Cerebral Circulation (The Common, External and Internal Carotid Artery) in Different Breeds of Dogs

  • Marieta K. Ševčíková,
  • Mária Figurová,
  • Karol Ševčík,
  • Marián Hluchý,
  • Michal Domaniža,
  • Mária Lapšanská,
  • Zuzana Drahovská and
  • Zdeněk Žert

9 May 2023

Noninvasive Doppler ultrasonography (US) examination is a standard method for the clinical evaluation of the carotid arteries. Extracranial cerebral circulation includes the common carotid artery (CCA), the external carotid artery (ECA), and the extr...

  • Article
  • Open Access
1,814 Views
13 Pages

21 December 2022

The formation shear-wave (S-wave)’s velocity information around a borehole is of great importance in evaluating borehole stability, reflecting fluid invasion, and selecting perforation positions. Dipole acoustic logging is an effective method f...

  • Article
  • Open Access
20 Citations
7,341 Views
16 Pages

Design and Evaluation of Enhanced Mock Circulatory Platform Simulating Cardiovascular Physiology for Medical Palpation Training

  • Jae-Hak Jeong,
  • Young-Min Kim,
  • Bomi Lee,
  • Junki Hong,
  • Jaeuk Kim,
  • Sam-Yong Woo,
  • Tae-Heon Yang and
  • Yong-Hwa Park

6 August 2020

This study presents a design and evaluation of a mock circulatory platform, which can reproduce blood pressure and its waveforms to provide palpation experience based on the human cardiovascular physiology. To reproduce the human cardiovascular behav...

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