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Artykuły w czasopismach na temat „Wave-based Methodology”

Autor: Grafiati
Data publikacji: 9 listopada 2024
Data aktualizacji: 31 lipca 2025

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1

Guan, X. "Supersonic wing-body wave drag co-ordinated optimisation based on FCE methodology." Aeronautical Journal 118, no. 1209 (2014): 1359–72. http://dx.doi.org/10.1017/s0001924000010010.

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Abstract Wave drag reduction is important for the aerodynamic performance optimisation of supersonic cruise aircrafts, such as the supersonic civil transport and the supersonic cruise missile. In this paper a method of the supersonic wing-body wave drag optimisation, the wave drag co-optimisation based on far-field composite elements (CoFCE), is proposed based on class-shape-transformation (CST) parameterisation. Wave drag optimisation cases of a supersonic civil transport wing-body are presented, including the optimisation results and computation cost analyses. It is suggested that the supers
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2

Zhang, Songhan, Ruili Shen, Kaoshan Dai, Lu Wang, Guido De Roeck, and Geert Lombaert. "A methodology for cable damage identification based on wave decomposition." Journal of Sound and Vibration 442 (March 2019): 527–51. http://dx.doi.org/10.1016/j.jsv.2018.11.018.

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3

Liu, Hongwei, Mustafa Naser Al-Ali, and Yi Luo. "Converted-wave model building and imaging based on common-focus-point methodology." GEOPHYSICS 85, no. 6 (2020): U139—U149. http://dx.doi.org/10.1190/geo2019-0549.1.

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Seismic images can be viewed as photographs for underground rocks. These images can be generated from different reflections of elastic waves with different rock properties. Although the dominant seismic data processing is still based on the acoustic wave assumption, elastic wave processing and imaging have become increasingly popular in recent years. A major challenge in elastic wave processing is shear-wave (S-wave) velocity model building. For this reason, we have developed a sequence of procedures for estimating seismic S-wave velocities and the subsequent generation of seismic images using
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4

Amlani, Faisal, and Niema M. Pahlevan. "A stable high-order FC-based methodology for hemodynamic wave propagation." Journal of Computational Physics 405 (March 2020): 109130. http://dx.doi.org/10.1016/j.jcp.2019.109130.

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Quiroga, Jabid, John Quiroga, Luis Mujica, Rodolfo Villamizar, and Magda Ruiz. "Temperature Robust PCA Based Stress Monitoring Approach." Key Engineering Materials 713 (September 2016): 288–92. http://dx.doi.org/10.4028/www.scientific.net/kem.713.288.

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In this paper, a guided wave temperature robust PCA-based stress monitoring methodology is proposed. It is based on the analysis of the longitudinal guided wave propagating along the path under stress. Slight changes in the wave are detected by means of PCA via statistical T2 and Q indices. Experimental and numerical simulations of the guided wave propagating in material under different temperatures have shown significant variations in the amplitude and the velocity of the wave. This condition can jeopardize the discrimination of the different stress scenarios detected by the PCA indices. Thus
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Cilici, Florent, Manuel J. Barragan, Estelle Lauga-Larroze, et al. "A Nonintrusive Machine Learning-Based Test Methodology for Millimeter-Wave Integrated Circuits." IEEE Transactions on Microwave Theory and Techniques 68, no. 8 (2020): 3565–79. http://dx.doi.org/10.1109/tmtt.2020.2991412.

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7

Nazarov, D. V., D. V. Antipov, and O. V. Lomovskoy. "MANUFACTURING PROCESS OF FLEXIBLE WAVE GEAR WHEELS BASED ON THE PFMEA METHODOLOGY." Izvestiya of Samara Scientific Center of the Russian Academy of Sciences 25, no. 3 (2023): 26–34. http://dx.doi.org/10.37313/1990-5378-2023-25-3-26-34.

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The article presents a model for assessing the risks of potential failures of the machining process of flexible wheels of wave gears (WG). The constructed model is based on the methodology for analyzing the types and consequences of potential process inconsistencies (PFMEA). Structural, functional analysis and analysis of failures arising in the process of turning, grinding and cutting the teeth of a flexible wheel are carried out. As a result of the analysis, a risk assessment was carried out and a list of measures aimed at improving the quality of the machining process of flexible wheels of
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8

Shi, Hongda, Chenyu Zhao, Martyn Hann, Deborah Greaves, Zhi Han, and Feifei Cao. "WHTO: A methodology of calculating the energy extraction of wave energy convertors based on wave height reduction." Energy 185 (October 2019): 299–315. http://dx.doi.org/10.1016/j.energy.2019.07.068.

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9

Hegermiller, C. A., J. A. A. Antolinez, A. Rueda, et al. "A Multimodal Wave Spectrum–Based Approach for Statistical Downscaling of Local Wave Climate." Journal of Physical Oceanography 47, no. 2 (2017): 375–86. http://dx.doi.org/10.1175/jpo-d-16-0191.1.

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AbstractCharacterization of wave climate by bulk wave parameters is insufficient for many coastal studies, including those focused on assessing coastal hazards and long-term wave climate influences on coastal evolution. This issue is particularly relevant for studies using statistical downscaling of atmospheric fields to local wave conditions, which are often multimodal in large ocean basins (e.g., Pacific Ocean). Swell may be generated in vastly different wave generation regions, yielding complex wave spectra that are inadequately represented by a single set of bulk wave parameters. Furthermo
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10

Solari, Sebastián, and Rodrigo Alonso. "A NEW METHODOLOGY FOR EXTREME WAVES ANALYSIS BASED ON WEATHER-PATTERNS CLASSIFICATION METHODS." Coastal Engineering Proceedings, no. 35 (June 23, 2017): 23. http://dx.doi.org/10.9753/icce.v35.waves.23.

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Extreme Value Analysis is usually based on the assumption that the data is independent and homogeneous. Historically the hypothesis of independence has received more attention than the hypothesis of homogeneity. The two most common ways of ensuring independence is to use annual maxima or peaks over threshold approaches. In wave and wind extreme analysis, the usual approaches to achieve homogeneous series have been to work to differentiate according to type of process generating the extreme value (e.g. differentiate between hurricanes and cyclones) and conduct directional analyzes. In this work
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11

Morency, Christina. "Electromagnetic wave propagation based upon spectral-element methodology in dispersive and attenuating media." Geophysical Journal International 220, no. 2 (2019): 951–66. http://dx.doi.org/10.1093/gji/ggz510.

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SUMMARY We build on mathematical equivalences between Maxwell’s wave equations for an electromagnetic medium and elastic seismic wave equations. This allows us to readily model Maxwell’s wave propagation in the spectral-element codes SPECFEM2D and SPECFEM3D, written for acoustic, viscoelastic and poroelastic seismic wave propagation, providing the ability to handle complex geometries, inherent to finite-element methods and retaining the strength of exponential convergence and accuracy due to the use of high-degree polynomials to interpolate field functions on the elements, characteristic to sp
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12

Inocencio, Ismael Aragorn, Eric Cruz, and Edgardo Kasilag. "MULTI-CRITERIA RATINGS METHODOLOGY FOR SUITABILITY EVALUATION OF OPEN PIER SITES." Coastal Engineering Proceedings, no. 36v (December 28, 2020): 26. http://dx.doi.org/10.9753/icce.v36v.management.26.

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Along a long project coastline, the optimal selection of an open pier site is based on the criterion of minimum wave agitation under prevailing wave conditions. Where multiple sites are being considered, it becomes imperative to carry out a ratings approach where the possible sites are assessed based on a ratings scale with objective weighting coefficients. This paper discusses a methodology applied to a multiple pier site feasibility study of a proposed cargo pier along a relatively sheltered coastline in the Philippines. In order to select the optimal site based on both technical and operati
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13

Chen, Cheng-Tsung, Jaw-Fang Lee, Kuei-Ting Lin, and Pi-Sheng Hu. "An Analytical Solution of Transient Wave Generation in the Wave Channel." Journal of Marine Science and Engineering 10, no. 9 (2022): 1198. http://dx.doi.org/10.3390/jmse10091198.

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Transient characteristics of wave generation in the wave channel can provide unique and important information in contrast to the steady and periodic motion of propagation waves. In this paper, a new analytical solution is proposed for a transient wavemaker problem in the wave channel. The mathematical model of the wavemaker problem is established based on the linear potential wave theory, and a new analytical solution for the corresponding initial and boundary-value problem is presented. The present solution methodology is motivated and developed from old methods shown in literature. The prese
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14

Verdejo, Humberto, Almendra Awerkin, Wolfgang Kliemann, et al. "A Dynamic Stochastic Hybrid Model to Represent Significant Wave Height and Wave Period for Marine Energy Representation." Energies 12, no. 5 (2019): 887. http://dx.doi.org/10.3390/en12050887.

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This paper presents a methodology to represent ocean wave power generation based on real data observation for significant wave height (SWH or H s ) and wave period (WP or T). This technique is based on a hybrid model, which considers Fourier series and stochastic differential equations, allowing a continuous time representation of the random changes in the parameters associated with wave power generation ( H s and T). The methodology is explained, including estimation methods and a validation procedure. The data series generated by the models erre used to create simulated wave power output app
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15

CUI, Dongze, Mohamed ICHCHOU, Noureddine ATALLA, and Abdel-Malek ZINE. "Computation of the sound transmission loss of heterogeneous periodic structure using the wave finite element-based methodology." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 270, no. 4 (2024): 7021–30. http://dx.doi.org/10.3397/in_2024_3900.

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In the present study, a Wave Finite Element-based method is introduced to estimate the Sound Transmission Loss (STL) of periodic structures with contrasting properties. This method addresses the precision and computational speed limitations of existing methodologies. It calculates the wave STL by applying a plane wave excitation from the ambient medium to a Unit Cell (UC), which is representative of the periodic structure. The STL under Diffuse Acoustic Field (DAF) is then computed by integrating the wave STL over all possible incidence angle ranges. The advantages of this methodology are demo
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16

Torregrosa, A. J., A. Broatch, X. Margot, and J. García-Tíscar. "Experimental methodology for turbocompressor in-duct noise evaluation based on beamforming wave decomposition." Journal of Sound and Vibration 376 (August 2016): 60–71. http://dx.doi.org/10.1016/j.jsv.2016.04.035.

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17

Do, Trung Q., John W. van de Lindt, and Daniel T. Cox. "Performance-based design methodology for inundated elevated coastal structures subjected to wave load." Engineering Structures 117 (June 2016): 250–62. http://dx.doi.org/10.1016/j.engstruct.2016.02.046.

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18

Degrande, Geert, and Guido De Roeck. "FFT-based spectral analysis methodology for one-dimensional wave propagation in poroelastic media." Transport in Porous Media 9, no. 1-2 (1992): 85–97. http://dx.doi.org/10.1007/bf01039628.

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19

Thiene, Marco, Z. Sharif-Khodaei, and M. H. Aliabadi. "Optimal Sensor Placement for Damage Detection Based on Ultrasonic Guided Wave." Key Engineering Materials 665 (September 2015): 269–72. http://dx.doi.org/10.4028/www.scientific.net/kem.665.269.

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In this work a methodology for effective positioning of sensors and actuators for damage detection and characterisation is described. The novelty of the proposed methodology is that the fitness function to be optimised does not contain probability of detection (POD) which needs to be obtained for every possible sensor combination. The proposed fitness function is to provide the maximum coverage of the structure via Lamb waves and reduce the negative effects of boundary reflections. Once the fitness function is defines, genetic algorithm (GA) is used as an optimisation strategy to result in opt
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20

Ramasubramanian, M., TKS Rathish Babu, and VRS Rajesh Kumar. "An Conventional Methodology for Brain Finger Printing." International Journal of Advanced Research in Computer Science and Software Engineering 7, no. 8 (2017): 301. http://dx.doi.org/10.23956/ijarcsse.v7i8.77.

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Brain fingerprinting is based on finding that the brain generates a unique brain wave pattern when a person encounters a familiar stimulus use of functional magnetic resonance imaging in lie detection derives from studies suggesting that persons asked to lie show different patterns of brain activity than they do when being truthful. Issues related to the use of such evidence in courts are discussed. In the field of criminology, a new lie detector has been developed in the United States of America.This invention is supposed to be the best lie detector available as on date and is said to detect
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21

Jin, J., X. Wang, Y. Han, et al. "Combined beef thawing using response surface methodology." Czech Journal of Food Sciences 34, No. 6 (2016): 547–53. http://dx.doi.org/10.17221/138/2016-cjfs.

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Based on four thawing methods (still air, still water, ultrasonic wave, and microwave) and single-factor tests, we established a four-factor three-level response surface methodology for a regression model (four factors: pH, drip loss rate, cooking loss rate, protein content). The optimal combined thawing method for beef rib-eye is: microwave thawing (35 s work/10 s stop, totally 170 s) until beef surfaces soften, then air thawing at 15°C until the beef centre temperature reaches –8°C, and finally ultrasonic thawing at 220 W until the beef centre temperature rises to 0°C. With this method, the
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22

Bennett, S. H. "Modeling methodology for vascular input impedance determination and interpretation." Journal of Applied Physiology 76, no. 1 (1994): 455–84. http://dx.doi.org/10.1152/jappl.1994.76.1.455.

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The significance of pulse wave reflections in the pulmonary vascular system is elaborated using a new method to determine the broadband frequency response of input impedance up to frequencies of 100 Hz. A simple data model, based on the signal construct of a wavelet, is used to generalize and reconcile the common approaches to vascular frequency response estimation so that an accurate response can be calculated from physiological waveforms. Input impedance interpretation is accomplished using a structural and functional modeling methodology. To identify internal structural system properties, t
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23

Thompson, Michael, Ivan Zelich, Evan Watterson, and Tom E. Baldock. "Wave Peel Tracking: A New Approach for Assessing Surf Amenity and Analysis of Breaking Waves." Remote Sensing 13, no. 17 (2021): 3372. http://dx.doi.org/10.3390/rs13173372.

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The creation and protection of surfing breaks along populated coastlines have become a consideration for many councils and governments as surfing breaks are a major driver of tourism. To assess the surf amenity of surfing breaks, a quantitative and objective assessment method is required. A new wave peel tracking (WPT) method has been developed using a shore-based camera to assess surf amenity by measuring and quantifying potential surfing ride rate, length, duration, speed and direction on a wave-by-wave basis. The wave peel (or “curl” below the wave peak) is the optimal surfing region on a w
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24

Ramos, Victor, Gianmaria Giannini, Tomás Calheiros-Cabral, Paulo Rosa-Santos, and Francisco Taveira-Pinto. "An Integrated Approach to Assessing the Wave Potential for the Energy Supply of Ports: A Case Study." Journal of Marine Science and Engineering 10, no. 12 (2022): 1989. http://dx.doi.org/10.3390/jmse10121989.

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In recent years, seaports have faced increasing pressure to transition towards a low-carbon and more sustainable energy model. In this context, the exploitation of the local wave energy resource may appear as a promising alternative. Therefore, the objective of this work is to present a methodology to select the best WEC-site combination to supply the energy demands of ports. To illustrate this methodology, the Port of Leixões (Portugal) is used as a case study. For the selection of wave energy sites in port areas, the methodology proposes a detailed spatial characterisation of both the wave r
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25

Ciortan, Sorin, and Eugen Rusu. "Analysis of Wave Energy Conversion with Dynamic Systems Theory." E3S Web of Conferences 103 (2019): 02003. http://dx.doi.org/10.1051/e3sconf/201910302003.

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In wave energy conversion one of the most important steps is building scenarios about long term efficiency, taking into account that several factors are involved. Based on the assumption that actually the weather conditions show important modifications year by year, analyses of wave power evolution during the exploitation time range must rely on both prediction models and on several options for the conversion device. From this point of view, the wave energy conversion process can be considered a dynamic system. The dynamic system theory based methodology approach systems behaviour through rela
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26

Golovin, Yu, I. Nesterenko, and S. Vasylenko. "METHODOLOGY FOR CALCULATING THE COVERAGE AREAS OF DIGITAL TELEVISION BROADCASTING." Information and communication technologies, electronic engineering 4, no. 1 (2024): 81–92. http://dx.doi.org/10.23939/ictee2024.01.081.

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The introduction of DVB-T2 digital television broadcasting in the VHF waveband is currently underway, and test trials have already been conducted in some regions of Ukraine. To assess the effectiveness of the projects, it is of particular interest to compare the radio coverage areas of digital TV transmitters operating in the VHF and UHF wave bands. This requires extensive calculations for specific locations. For comparison, the city of Kyiv was chosen, where there is one multiplex MX-7 (8 TV channels) in the VHF band, and the following four multiplexes are represented in the UHF band: MX 1 (2
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27

Azizi, Sadegh, Majid Sanaye-Pasand, Moein Abedini, and Abbas Hassani. "A Traveling-Wave-Based Methodology for Wide-Area Fault Location in Multiterminal DC Systems." IEEE Transactions on Power Delivery 29, no. 6 (2014): 2552–60. http://dx.doi.org/10.1109/tpwrd.2014.2323356.

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28

Sakhare, Rahul Suryakant, Howell Li, and Darcy M. Bullock. "Methodology for the Identification of Shock Wave Type and Speed in a Traffic Stream Using Connected Vehicle Data." Future Transportation 3, no. 4 (2023): 1147–74. http://dx.doi.org/10.3390/futuretransp3040063.

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The concept of traffic shock waves was first theorized by Lighthill and Whitham in 1955. The identification of shock wave type and speed in a traffic stream provides critical information about the queue formation and its dissipation. This information can be utilized by various stakeholders for traffic management, emergency response, etc. Such information can also be integrated into the travel time prediction models and real-time route diversions for navigation. Past efforts at identifying shock waves used simulation or analysis based on location-based sensors such as loop detectors. This paper
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29

Sardon, J. P. "The 2003 heat wave." Eurosurveillance 12, no. 3 (2007): 11–12. http://dx.doi.org/10.2807/esm.12.03.00694-en.

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The July-August 2005 issue of Eurosurveillance focused on the impact on mortality of the 2003 heat wave in Europe, with articles that were based on various methods and looked at different time periods. The subject of this letter is to assess, using a unique methodology, the excess mortality related to the 2003 heat wave across the continent.
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Bilbao, Stefan. "Complex Source Distributions in Wave-based Virtual Acoustics." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 268, no. 4 (2023): 4706–16. http://dx.doi.org/10.3397/in_2023_0669.

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In the typical scenario in time-domain wave-based acoustics, the solution to the acoustic wave equation is approximated over a three-dimensional volumetric grid using a time stepping method. In the setting of very large simulations, the grid is normally assumed to be regular (e.g. Cartesian) so that massive parallelism may be exploited. One difficulty has been in representing source distributions that do not conform neatly to a regular grid. Using a Fourier-based optimisation procedure in the wave vector domain, it is possible to represent arbitrary source distributions in a flexible way over
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Santos, Diogo, Tiago Abreu, Paulo A. Silva, Fábio Santos, and Paulo Baptista. "Nearshore Bathymetry Retrieval from Wave-Based Inversion for Video Imagery." Remote Sensing 14, no. 9 (2022): 2155. http://dx.doi.org/10.3390/rs14092155.

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A wavelet-based method for bathymetry retrieval using a sequence of static images of the surface wave field, as obtained from video imagery, is proposed. Synthetic images of the water surface are generated from a numerical Boussinesq type model simulating the propagation of irregular waves. The spectral analysis is used to retrieve both wave periods and wavelengths by evaluating the spectral peaks in the time and spatial domains, respectively. The water depths are estimated using the linear dispersion relation and the results are validated with the model’s bathymetry. To verify the proposed me
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32

Wang, Junfang, Cheuk Ming Mak, and Yi Yun. "A methodology for direct identification of characteristic wave-types in a finite periodic dual-layer structure with transverse connection." Journal of Vibration and Control 18, no. 9 (2011): 1406–14. http://dx.doi.org/10.1177/1077546311419699.

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In a companion paper the phenomenon of flexural-longitudinal wave coupling in an infinite dual-beam periodic structure with transverse connection is investigated. The remarkable finding obtained that there was such a periodic structure which conveyed fundamentally three symmetric and three antisymmetric characteristic coupled waves. In this paper, a methodology is proposed to realize the direct identification of characteristic waves from the responses of a finite periodic structure. This represents a considerable departure from traditional methods, in which the assumption of infinite dimension
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33

Starodub, Yu, and V. Bagnyuk. "MODELING AND METHODOLOGY OF EVALUATION OF ENGINEERING SITUATION IN RIVER BREAKDOWN OF SEREDNYODNIPROVSKA HES." Bulletin of Lviv State University of Life Safety 20 (January 24, 2020): 96–100. http://dx.doi.org/10.32447/20784643.20.2019.14.

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The article deals with the process of parameters estimation of the flood zone at the dam break or its destruction, and a scale of possible destruction caused by possible emergencies. Modeling is carried out for the time of approach of the breakthrough wave to a given distance, the height of the breakthrough wave, the time of discharge of the reservoir, the duration of the passage of the wave at a predetermined distance for buildings and structures in the area of shock wave. The example is done for the dam of the Middle Dnieper hydroelectric power station. A technique for modeling a hazardous s
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Tien, Nguyen Anh. "To study impact level of dominat parameters and propose estimate methodology for wave transmission efficiency of unconventional complex pile submerged breakwater." Tạp chí Khoa học và Công nghệ Biển 19, no. 4 (2020): 611–25. http://dx.doi.org/10.15625/1859-3097/19/4/13080.

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This article proposes semi-empirical equations to estimate wave transmission coefficient through submerged complex with solid pile breakwater based on theories of random wave energy conservation of perpendicular wave transmission incorporated with physical hydraulic experiments in wave flume applied on both types of submerged breakwater with and without piles. These equations are able to describe interactions and energy dissipation process for each element of this complex structure which are foundation block and pile rows. Energy dissipation process depends on three major factors which are [re
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35

Quan, Yu Sheng, Dai Juan Wang, Guang Chen, and Zong Cheng Zhang. "Study on the Methodology of Detection for Power Cable Insulation Defects Based on Oscillatory Wave." Advanced Materials Research 805-806 (September 2013): 880–83. http://dx.doi.org/10.4028/www.scientific.net/amr.805-806.880.

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Water tree, electrical tree and electrochemical tree formed by premature defects of the cable can induce fault. The failure rate of the cable connecter which is higher than cable itself can emerge water tree, electrical tree and electrochemical tree. Meanwhile, the flashover, partial discharge and overheated of the cable joint are also the important reasons for fault. The oscillatory wave of detecting the power cable insulation defects based on is put forward in this paper in terms of the problems existed in the cable detection technology. With the application of oscillatory wave and signal so
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Xiang, Ning, Jack Taylor, and Max Miller. "Laser Doppler vibrometry-based measurements on viscoelastic panels for flexural damping properties." Journal of the Acoustical Society of America 153, no. 3_supplement (2023): A239. http://dx.doi.org/10.1121/10.0018766.

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Bending wave propagation is of central importance when enhancing sound transmission losses of sandwiched wall board systems incorporating viscoelastic panels as constrained damping layers. The damping properties of constrained damping layers made of viscoelastic materials can often be characterized by bending wave excitations. However, the multifactor, dispersive nature of the bending waves leads to challenges in reliable dynamic material characterization. To better understand the damping mechanism of the constrained damping layers, an experimental methodology employing complex bending wave th
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Pipberger, H. A., H. V. Pipberger, and C. D. McManus. "Methodology of ECG Interpretation in the AVA Program." Methods of Information in Medicine 29, no. 04 (1990): 337–40. http://dx.doi.org/10.1055/s-0038-1634797.

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AbstractThe AVA program combines a thirty-year history with an approach that remains innovative; namely: multivariate statistical analysis on orthogonal ECG leads. Its diagnostic reference base includes only diagnoses independently verified by non-ECG criteria. The diagnostic module assesses probabilities of nine alternative disease categories, based on QRS-T parameters; or four other categories in case of conduction defects. Probabilities of left or right atrial overload are also computed. The program also recognizes wall injury, T-wave abnormalities, electrolyte disturbances, myocardial isch
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Ciortan, Sorin, and Eugen Rusu. "Prediction of the wave power in the Black Sea based on wind speed using artificial neural networks." E3S Web of Conferences 51 (2018): 01006. http://dx.doi.org/10.1051/e3scconf/20185101006.

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The paper proposes a prediction methodology for the significant wave height (and implicitly the wave power), based on the artificial neural networks. The proposed approach takes as input data the wind speed values recorded for different time periods. The prediction of significant wave height is useful both for assessment of wave energy as also for marine equipment design and navigation. The data used cover the time interval 1999 to 2007 and it was measured on Gloria drilling unit, which operates in the Romanian nearshore of the Black Sea at about 500 meters depth.
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39

Ciortan, Sorin, and Eugen Rusu. "Prediction of the wave power in the Black Sea based on wind speed using artificial neural networks." E3S Web of Conferences 51 (2018): 01006. http://dx.doi.org/10.1051/e3sconf/20185101006.

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The paper proposes a prediction methodology for the significant wave height (and implicitly the wave power), based on the artificial neural networks. The proposed approach takes as input data the wind speed values recorded for different time periods. The prediction of significant wave height is useful both for assessment of wave energy as also for marine equipment design and navigation. The data used cover the time interval 1999 to 2007 and it was measured on Gloria drilling unit, which operates in the Romanian nearshore of the Black Sea at about 500 meters depth.
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40

Janquart, Justin, Otto A. Hannuksela, K. Haris, and Chris Van Den Broeck. "A fast and precise methodology to search for and analyse strongly lensed gravitational-wave events." Monthly Notices of the Royal Astronomical Society 506, no. 4 (2021): 5430–38. http://dx.doi.org/10.1093/mnras/stab1991.

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ABSTRACT Gravitational waves, like light, can be gravitationally lensed by massive astrophysical objects such as galaxies and galaxy clusters. Strong gravitational-wave lensing, forecasted at a reasonable rate in ground-based gravitational-wave detectors such as Advanced LIGO, Advanced Virgo, and KAGRA, produces multiple images separated in time by minutes to months. These images appear as repeated events in the detectors: gravitational-wave pairs, triplets, or quadruplets with identical frequency evolution originating from the same sky location. To search for these images, we need to, in prin
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41

De Leo, Francesco, Sebastián Solari, and Giovanni Besio. "Extreme wave analysis based on atmospheric pattern classification: an application along the Italian coast." Natural Hazards and Earth System Sciences 20, no. 5 (2020): 1233–46. http://dx.doi.org/10.5194/nhess-20-1233-2020.

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Abstract. This paper provides a methodology for classifying samples of significant wave-height peaks in homogeneous subsets in terms of the atmospheric circulation patterns behind the observed extreme wave conditions. Then, a methodology is given for the computation of the overall extreme value distribution by starting from the distributions fitted to each single subset. To this end, the k-means clustering technique is used to classify the shape of the wind fields that occurred simultaneously to and prior to the occurrences of the extreme wave events. This results in a small number of characte
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42

Shakir, Ammar M., Giovanni Cascante, and Taher H. Ameen. "Methodology for the Early Detection of Damage Using CEEMDAN-Hilbert Spectral Analysis of Ultrasonic Wave Attenuation." Materials 18, no. 14 (2025): 3294. https://doi.org/10.3390/ma18143294.

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Current non-destructive testing (NDT) methods, such as those based on wave velocity measurements, lack the sensitivity necessary to detect early-stage damage in concrete structures. Similarly, common signal processing techniques often assume linearity and stationarity among the signal data. By analyzing wave attenuation measurements using advanced signal processing techniques, mainly Hilbert–Huang transform (HHT), this work aims to enhance the early detection of damage in concrete. This study presents a novel energy-based technique that integrates complete ensemble empirical mode decomposition
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Yan, Binpeng, Yongzhen Ji, and Peidong Shi. "Frequency-dependent inversion based on spherical-wave reflection coefficient in elastic medium: Theory and methodology." Journal of Applied Geophysics 209 (February 2023): 104908. http://dx.doi.org/10.1016/j.jappgeo.2022.104908.

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Davydov, Roman, Anna Zaitceva, Vadim Davydov, Daria Isakova, and Maria Mazing. "New Methodology of Human Health Express Diagnostics Based on Pulse Wave Measurements and Occlusion Test." Journal of Personalized Medicine 13, no. 3 (2023): 443. http://dx.doi.org/10.3390/jpm13030443.

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Nowadays, with the increase in the rhythm of life, the relevance of using express diagnostics methods for human health state estimation has significantly increased. We present a new express diagnostics method based on non-invasive measurements (the pulse wave shape, heart rate, blood pressure, and oxygen saturation of blood vessels and tissues). A feature of these measurements is that they can be carried out both in the hospital and at home. The new compact and portable optical hardware–software complex has been developed to measure tissue oxygen saturation. This complex makes it possible to r
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Rickett, James E. "Illumination‐based normalization for wave‐equation depth migration." GEOPHYSICS 68, no. 4 (2003): 1371–79. http://dx.doi.org/10.1190/1.1598130.

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Illumination problems caused by finite‐recording aperture and lateral velocity lensing can bias amplitudes in migration results. In this paper, I develop a normalization scheme appropriate for wave‐equation migration algorithms that compensates for irregular illumination. I generate synthetic seismic data over a reference reflectivity model, using the adjoint of wave‐equation shot‐profile migration as the forward modeling operator. I then migrate the synthetic data with the same shot‐profile algorithm. The ratio between the synthetic migration result and the initial reference model is a measur
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46

Chalmoukis, Iason, Georgios Leftheriotis, and Athanassios A. Dimas. "COMPARISON BETWEEN A PERCHED BEACH AND AN ARTIFICIAL REEF IN TERMS OF WAVE ATTENUATION." Coastal Engineering Proceedings, no. 38 (May 29, 2025): 123. https://doi.org/10.9753/icce.v38.structures.123.

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In the present work, numerical models of a perched beach (PB) and an artificial reef (AR) are used in order to assess their effectiveness as environment-friendly coastal protection methods. The comparison is based on the results of wave attenuation and velocity field. The methodology is based on large-eddy simulations of the developing two-phase (water/air) flow induced by wave propagation. The results of the free-surface elevation indicate that the PB reduces slightly the wave height, whereas the reef diminishes it almost completely.
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47

Arcos, Robert, Paulo J. Soares, Kenny F. Conto, Pedro Alves Costa, and Luís Godinho. "A numerical validation of a 3D hybrid meshless methodology for dynamic soil-structure interaction problems." Journal of Physics: Conference Series 2647, no. 20 (2024): 202009. http://dx.doi.org/10.1088/1742-6596/2647/20/202009.

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Abstract In this paper, a hybrid meshless methodology for the simulation of dynamic soil-structure interaction problems is verified in a three-dimensional context. The method aims to predict the ground-borne noise and vibration levels to which a new building to be constructed close to a ground vibration source will be subjected. The method is based on three steps: incident wave field evaluation in a set of collocation points, incident wave field virtualization by a set of virtual forces and structure response determination applying the set of virtual forces to a coupled soil-structure model. T
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Altomare, Corrado, Sara Mizar Formentin, and Barbara Zanuttigh. "CALCULATING WAVE OVERTOPPING VOLUMES THROUGH IMAGE CLUSTERING ANALYSIS." Coastal Engineering Proceedings, no. 38 (May 29, 2025): 18. https://doi.org/10.9753/icce.v38.structures.18.

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In the last decade, the use of video imagery has been increasingly recognised as an efficient technique to model the wave motion (e.g. Buscombe et al., 2020; Stringari et al., 2021) and the wave-structure interaction processes (i.a., Hofland et al., 2015, Den Bieman et al., 2020), overcoming some of the limitations imposed by physical measurements. In the stream of machine-learning techniques for reconstructing quantitative data from video imagery, Formentin et al. (2021) developed a technique based on image clustering analysis to reconstruct the free-surface elevation and the wave overtopping
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Shrivastava, Ruchi, and Dr Krishna Teerth Chaturvedi. "Correlation Enhanced Machine Learning Approach based Wave Height Prediction." SMART MOVES JOURNAL IJOSCIENCE 4, no. 5 (2018): 10. http://dx.doi.org/10.24113/ijoscience.v4i5.136.

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The prediction of wave height is one of the major problems of coastal engineering and coastal structures. In recent years, advances in the prediction of significant wave height have been considerably developed using flexible calculation techniques. In addition to the traditional prediction of significant wave height, soft computing has explored a new way of predicting significant wave heights. This research was conducted in the direction of forecasting a significant wave height using machine learning approaches. In this paper, a problem of significant wave height prediction problem has been ta
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Lee, Jae-Hoon, Yoon-Seo Nam, Jaehak Lee, Yuming Liu, and Yonghwan Kim. "Estimation of Significant Wave Height Using Wave-Radar Images." Journal of Marine Science and Engineering 12, no. 7 (2024): 1134. http://dx.doi.org/10.3390/jmse12071134.

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Characteristics of random ocean waves have been measured by different devices, and X-band marine radar is one of the typical devices. This study proposes an enhanced methodology for estimating the significant wave height of ocean waves through the analysis of X-band radar images, particularly leveraging the shadowing characteristics inherent within radar images. The enhancement of the shadowing-based algorithm is achieved by incorporating three different key physical properties of ocean waves. These include the spatial autocorrelation function (SACF) in the Smith function, the orthogonal prope
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