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State-of-the Art-Powerhouse, Dam Structure, and Turbine Operation and Vibrations

Zaher Mundher Yaseen, Ameen Mohammed Salih Ameen, Mohammed Suleman Aldlemy, Mumtaz Ali, Haitham Abdulmohsin Afan, Senlin Zhu, Ahmed Mohammed Sami Al-Janabi, Nadhir Al-Ansari, Tiyasha Tiyasha, Hai Tao
2020 Sustainability  
Dam and powerhouse operation sustainability is a major concern from the hydraulic engineering perspective.  ...  Here, we conducted a comprehensive review of studies performed on dams, powerhouses, and turbine vibration, focusing on the vibration of two turbine units: Kaplan and Francis turbine units.  ...  Hence, discrete-time Fourier transform, Wiener transform, wavelet transform, and Hilbert-Huang method can be used for static structural health monitoring [58, 59] .  ... 
doi:10.3390/su12041676 fatcat:iddanffqcbe6xo2vrbelnuq6ae

Development of a Model to Predict Vibrations Induced by Blasting Excavation of Deep Rock Masses under High In Situ Stress

Yong Fan, Xianze Cui, Zhendong Leng, Yurong Zhou, Junwei Zheng, Feng Wang, Mohamed Abdelkareem
2020 Shock and Vibration  
Then, a prediction model of vibration peak based on the principle of energy balance was established by dimension analysis.  ...  Finally, the proposed model was trained and tested with the vibration data monitored during the blasting excavation of deep buried tunnel in Jinping II hydropower station.  ...  the Moyal inner product theorem is used for the continuous wavelet transform of any energy-limited function f (t) with respect to ψ (t). e following equation holds: 1 C ψ R da a 2 R W f (a, b) 2 db �  ... 
doi:10.1155/2020/8817631 fatcat:l75jta7jubd4xo6l6bczyz3quy

Abstracts of the 10th Conference of the Italian Society of Agricultural Engineering

Danilo Monarca, Massimo Cecchini
2013 Journal of Agricultural Engineering  
The Journal of Agricultural Engineering (JAE) is the official journal of the Italian Society of Agricultural Engineering -AIIA -supported by University of Bologna.  ...  Technical Notes: are articles with a simple layout and containing limited data (no more than two figures or tables) and a small number of citations (not more than 25).  ...  In this paper a genetic algorithm with the ability to dialogue with a dynamic thermal model is implemented. The algorithm, coded in Matlab, works with populations of strings.  ... 
doi:10.4081/jae.2013.s1 fatcat:h7ew2cbv35eozilnpl4acjfv5a

Engineering, Technology & Applied Science Research (ETASR), Vol. 11, No. 4, pp. 7291-7530

Various
2021 Zenodo  
ETASR is indexed in the Web of Science Core Collection (former Web of Science/Thomson Reuters Master Journal List), through the Emerging Sources Citation Index, is a Crossref member (DOI prefix: 10.48084  ...  Engineering, Technology & Applied Science Research (ETASR) is an international bimonthly wide scope, peer-reviewed open access journal for the publication of original articles concerned with diverse aspects  ...  Authors in [9] proposed a CNN model, and Support Vector Machine (SVM) with the linear kernel function to classify COVID-19 and healthy chest X-ray images and reached 94.7% accuracy.  ... 
doi:10.5281/zenodo.5506592 fatcat:73sj5nawgndeffb26wh6wnux4a

Temporal integration of loudness as a function of level

Mary Florentine, So/ren Buus, Torben Poulsen
1995 Journal of the Acoustical Society of America  
The output of a coupled ocean-atmospher• general circulation model was used tO simulate to expected climate change scenario. The model was mn with no CO2 increase and with CO•2 doubling.  ...  Tappert (Univ. of Miami, Miami, FL 33149) Full-wave numerical simulations of internal wave scattering of lowfrequency sound in the deep ocean are performed with an efficient broadband PE model based on  ...  This ratio is only 20 (between 0.5 and 10 cm 2) for the "compact" versus "diffuse" axis (from/a/to/i/).  ... 
doi:10.1121/1.411567 fatcat:h52442zdrnc6zmr4ephlixbspu

Application of the PE method to up‐slope sound propagation

Marta Galindo, Karsten Bo Rasmussen
1995 Journal of the Acoustical Society of America  
The output of a coupled ocean-atmospher• general circulation model was used tO simulate to expected climate change scenario. The model was mn with no CO2 increase and with CO•2 doubling.  ...  Tappert (Univ. of Miami, Miami, FL 33149) Full-wave numerical simulations of internal wave scattering of lowfrequency sound in the deep ocean are performed with an efficient broadband PE model based on  ...  This ratio is only 20 (between 0.5 and 10 cm 2) for the "compact" versus "diffuse" axis (from/a/to/i/).  ... 
doi:10.1121/1.411728 fatcat:bvxtg4xt7zcljo4rpxldvug444

Temporal integration of loudness as a function of level

Mary Florentine, So/ren Buus, Torben Poulsen
1996 Journal of the Acoustical Society of America  
The output of a coupled ocean-atmospher• general circulation model was used tO simulate to expected climate change scenario. The model was mn with no CO2 increase and with CO•2 doubling.  ...  Tappert (Univ. of Miami, Miami, FL 33149) Full-wave numerical simulations of internal wave scattering of lowfrequency sound in the deep ocean are performed with an efficient broadband PE model based on  ...  This ratio is only 20 (between 0.5 and 10 cm 2) for the "compact" versus "diffuse" axis (from/a/to/i/).  ... 
doi:10.1121/1.415236 pmid:8819858 fatcat:tsiit3akb5e4tkzxdzrilpsfzy

BNA Festival of Neuroscience 2019

2019 Brain and Neuroscience Advances  
This study aimed to investigate the effect of stress on brain connectivity in an adolescent population using a graph theory approach.  ...  Statistical analysis will be performed using unpaired T-tests and/or One-way analysis of variance (ANOVA) with an appropriate post-hoc test.  ...  Analysis approach: The extracted microstates were used to build a linear support vector machine (SVM) model. The existing data were split in 7:3 ratio for training and validation set, appropriately.  ... 
doi:10.1177/2398212819855490 fatcat:y4b5r7rpdnblzoxvb2crpzqhee

A Review of Recent Distributed Optical Fiber Sensors Applications for Civil Engineering Structural Health Monitoring

Mattia Francesco Bado, Joan R Casas
2021 Sensors  
Its most state-of-the-art feature, though, is the ability to perform measurements with very small spatial resolutions (as small as 0.63 mm).  ...  The present work is a comprehensive collection of recently published research articles on Structural Health Monitoring (SHM) campaigns performed by means of Distributed Optical Fiber Sensors (DOFS).  ...  In order to improve the accuracy of the disturbing event recognition, the authors suggested the use of the Wigner bispectrum analysis combined with an extreme gradient boosting tree algorithm.  ... 
doi:10.3390/s21051818 pmid:33807792 pmcid:PMC7962066 fatcat:e4i6x7fxo5hcbjhzqfviywm2kq

RADA PROGRAMOWA / PROGRAM COUNCIL

Antoni, Instytut Energetyki, Warszawie Gelman, Mohamed Haddar, Politechnika Warszawska, Randall, Raj Rao, Politechnika Śląska, Gajraj Singh, Yadava, Redakcja Diagnostyki, Katedra Budowy (+2 others)
unpublished
In the case of Wavelet Transform in order to obtained an orthogonal results of decomposition a Discrete Wavelet Transform was applied [2, 5] .  ...  Distribution of signal in frequency domain was estimated with use Fourier Transform (normalized Power Spectrum Density) or Discrete Wavelet Transform.  ...  , while in its operation it draws on the idea of functioning of SVM (Support Vector Machines) classifiers.  ... 
fatcat:2sepfbsyandbdfmadtsxxq5i44

The 6×6 stiffness formulation and transformation of serial manipulators via the CCT theory

Shih-Feng Chen
2003 IEEE International Conference on Robotics and Automation (Cat. No.03CH37422)  
Bolometer performance modeling shall be done in conjunction with NVESD. PHASE II: Using results of the investigation from phase I, fabricate, build and demonstrate a 320x240 ROIC.  ...  PHASE I: Demonstrate the technical feasibility of the approach using a combination of experimental results and physical modeling.  ...  Develop FEM models of the selected part and perform stress analysis using the loads that occur in the tracks of Army vehicles.  ... 
doi:10.1109/robot.2003.1242218 dblp:conf/icra/Chen03 fatcat:zmssxoehbzamtoprst3o56vo5m

Removal of Copper from Simulated Wastewater by Applying Electromagnetic Adsorption for Locally Prepared Activated Carbon of Banana Peels ‫ممتسة‬ ‫مادة‬ ‫باستخذام‬ ‫الكهرومغناطيسي‬ ‫األمتساز‬ ‫تقنيت‬ ‫بأستخذام‬ ‫المياه‬ ‫من‬ ‫النحاش‬ ‫إزالت‬ ‫من‬ ‫محليا‬ ‫منتجت‬ ‫المىز‬ ‫قشىر‬

Hayder Mohammed, Abdul-Hameed
2017 Number 1 Journal of Engineering   unpublished
The adsorption of copper ions onto produced activated carbon from banana peels (with particle size 250 µm) in a single component system with applying magnetic field has been studied using fixed bed adsorber  ...  The fixed bed breakthrough curves for the copper ions were investigated. The adsorption capacity for Cu (II) was investigated.  ...  The focus in the signal analysis in the frequency domain is on the way of fast Fourier transform (FFT).The fast Fourier transform (FFT) is used to reduce the number of calculations compared with the Discrete  ... 
fatcat:44c3kwxmkrdp3mm4vinuhvdyem