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Online since: September 2013
Authors: Xin Yi Huang, Wei Dong Zhuo, Guan Ping Shang
A 12DOF vehicle model is developed and used in the analysis, at last the approach is validated by comparison with field test data.
2 Idealizations and assumptions
2.1 Idealization of bridge system.
To improve the efficiency of calculation, a process known as Guyan reduction is performed [16].
The road surface roughness function in the time domain can be simulated by applying the inverse fast Fourier transformation on to give [20] (6) Where is a set of independent random phase angles uniformly distributed between 0 and . is the spatial frequency, is the distance interval between successive ordinates of the surface profile, is the number of data points, is the longitudinal coordinate.
Reduction of stiffness and mass matrices.
Mechanical vibration—Road surface profiles—reporting of measured data, 1995(E)
To improve the efficiency of calculation, a process known as Guyan reduction is performed [16].
The road surface roughness function in the time domain can be simulated by applying the inverse fast Fourier transformation on to give [20] (6) Where is a set of independent random phase angles uniformly distributed between 0 and . is the spatial frequency, is the distance interval between successive ordinates of the surface profile, is the number of data points, is the longitudinal coordinate.
Reduction of stiffness and mass matrices.
Mechanical vibration—Road surface profiles—reporting of measured data, 1995(E)
Online since: June 2013
Authors: Rui Miguel Ferreira Paulo, Pierpaolo Carlone, Filipe Teixeira-Dias, Gaetano S. Palazzo, Robertt Valente
The collected data was introduced in a stiffened panel finite element model, including a welded zone.
The application of the conventional contour method is based on four consecutive steps: the cutting of the welded specimen, the shape acquisition on the relaxed surface, the data reduction and the stress computation.
Experimental data was then imported, averaged and fit to a unique smoothing surface in MATLAB.
The material of the HAZ was modelled based on a yield stress reduction of 30% when compared to the base material in the surroundings, not affected by thermal effects.
The application of the conventional contour method is based on four consecutive steps: the cutting of the welded specimen, the shape acquisition on the relaxed surface, the data reduction and the stress computation.
Experimental data was then imported, averaged and fit to a unique smoothing surface in MATLAB.
The material of the HAZ was modelled based on a yield stress reduction of 30% when compared to the base material in the surroundings, not affected by thermal effects.
Online since: September 2023
Authors: G. Sivasakthi, K. Dhineshkumar, M. Sivanesh, C. Muguthan, R. Thiyagarajan, V. Pandiaraj
The ANN model was trained and tested on the experimental data obtained from the wear test [19]–[21].
Data collection and preprocessing: The first step in developing an ANN is to collect and preprocess the data.
Training the network: The ANN is trained using the preprocessed data.
Validation: The trained ANN is validated using a set of data that was not used during training.
The validation data is used to evaluate the performance of the ANN in predicting the responses accurately.
Data collection and preprocessing: The first step in developing an ANN is to collect and preprocess the data.
Training the network: The ANN is trained using the preprocessed data.
Validation: The trained ANN is validated using a set of data that was not used during training.
The validation data is used to evaluate the performance of the ANN in predicting the responses accurately.
Research and Analysis of Design and Optimization of Magnetic Memory Material Cache Based on STT-MRAM
Online since: August 2019
Authors: Tao Xu, Tian Liu, Wei Zhang, Guan Wang
It does not need to access data in a specific order in time, like DRAM, MRAM, etc.
This mechanism will refresh all cache blocks regardless of whether their data content is invalid.
When you need to replace the data in the cache, there will be cases where the data to be replaced needs to be written back to the hard disk.
Our design method is to first write back the data in the cache when it needs to write data back to the STT-MRAM magnetic memory, first to determine whether there is continuous data in the cache where the current writer is located.
One is the value of the data block address from the current position of the writer and the rotation delay time; It is the time when the STT-MRAM magnetic memory writes the data block back to this address, the extra data is copied and rewritten because of the write amplification; the other is the time function generated by the number of times the data is frequently accessed recently, and its function is set.
This mechanism will refresh all cache blocks regardless of whether their data content is invalid.
When you need to replace the data in the cache, there will be cases where the data to be replaced needs to be written back to the hard disk.
Our design method is to first write back the data in the cache when it needs to write data back to the STT-MRAM magnetic memory, first to determine whether there is continuous data in the cache where the current writer is located.
One is the value of the data block address from the current position of the writer and the rotation delay time; It is the time when the STT-MRAM magnetic memory writes the data block back to this address, the extra data is copied and rewritten because of the write amplification; the other is the time function generated by the number of times the data is frequently accessed recently, and its function is set.
Online since: December 2013
Authors: Pavel Hora, Sören Müller, Long Chang Tong, Joachim Maier, Christoph Becker
The present work relates to experimentally evaluated tribological behavior of the Torsion-Tribo-test and shows how those data can be transferred to different new friction models.
A rough mesh leads to a reduction of the strain rates and so of the yield stresses, but the shear stresses will be reduced equally.
A rough mesh leads to a reduction of the strain rates and so of the yield stresses, but the shear stresses will be reduced equally.
Online since: September 2008
Authors: Mihai Lazar, Sigo Scharnholz, Dominique Planson, Christophe Raynaud, Gontran Pâques, H. Vang
Supported by XPS data we come to the
conclusion that the RIE process creates surface charges which have an impact on the breakdown
voltage of the fabricated diodes.
The consequence is the reduction of the mesa protection efficiency so the breakdown voltage is lower than the expected value.
The consequence is the reduction of the mesa protection efficiency so the breakdown voltage is lower than the expected value.
Online since: August 2007
Authors: M. Çelik
Therefore, the system identification process will
need to base itself on output-only data.
These data can then be compared to or even decomposed into the laboratory modal results [1].
Fig. 5: The measurement system data flow of PMS turret.
After the completion of the tests, the collected data is reduced and grouped into test phases.
The experimental data are processed and analyzed using the LMS test lab [5].
These data can then be compared to or even decomposed into the laboratory modal results [1].
Fig. 5: The measurement system data flow of PMS turret.
After the completion of the tests, the collected data is reduced and grouped into test phases.
The experimental data are processed and analyzed using the LMS test lab [5].
Online since: November 2012
Authors: Jing Lei Zhou, Zeng You Zhu
When re-quantize a signal of low levels, serious distortion may occur due to word length reduction.
Due to the recording's data bits are limited, in order to reduce error accumulation, it must retain higher accuracy in intermediate links of the processing, after finishing processing, the result needs to be truncated and converted into a specific format.
Cut out a section about 31s 44.1kHz / 16bit wav format audio file as a test file, quantify it to 10bit, three methods were used here: quantify it directly, add dither before quantifying and the quantization with dither and using noise shaping, then come out three output files of the original sampling rate; in addition, we also programmed to perform 2 times upsampling treatment to the original audio data, then re-quantify it to 10bit using the above three methods , receive three output files with a sampling rate of 88.2kHz.
When adding proper dither before rounding the audio data, although it can hear background white noise, it has no intermittent or distortion.
Due to the recording's data bits are limited, in order to reduce error accumulation, it must retain higher accuracy in intermediate links of the processing, after finishing processing, the result needs to be truncated and converted into a specific format.
Cut out a section about 31s 44.1kHz / 16bit wav format audio file as a test file, quantify it to 10bit, three methods were used here: quantify it directly, add dither before quantifying and the quantization with dither and using noise shaping, then come out three output files of the original sampling rate; in addition, we also programmed to perform 2 times upsampling treatment to the original audio data, then re-quantify it to 10bit using the above three methods , receive three output files with a sampling rate of 88.2kHz.
When adding proper dither before rounding the audio data, although it can hear background white noise, it has no intermittent or distortion.
Online since: November 2017
Authors: Hicham Benhayoune, Joël Faure, Yousra Alaoui Selsouli, Mohammed Bey Damene, Abdelilah Benmarouane, Florica Simescu-Lazar
Structural analysis is performed by X Rays Diffraction and the data are treated using the RIETVELD method.
The applied current causes the reduction of H2O2 which results in a strong decrease of dihydrogen emission from the cathode. [10].
The X-ray data are collected for 2θ ranging from 10° to 60° using a monochromatic CuKα radiation with the step of 0.06° every 60s.
The applied current causes the reduction of H2O2 which results in a strong decrease of dihydrogen emission from the cathode. [10].
The X-ray data are collected for 2θ ranging from 10° to 60° using a monochromatic CuKα radiation with the step of 0.06° every 60s.
Online since: November 2015
Authors: Stefan Velicu, Paul Liviu Păunescu, Ionel Păunescu
The data presented are useful for the analysis of the structural modifications that occur and develop during the operation of a screw compressor, with the possibility to predict a failure.
The screw compressors with oil injected screw have many advantages, such as: the rotor is directly coupled to the driving motor, which means costs reduction, oil injection ensures a tight seal between rotors and housing, namely protection against corrosion, diminution of noises, robustness and high reliability, exhaust temperature control, thus avoiding the problems caused by the dew point, tolerance to liquid particles, low vibrations.
To maintain the compressor in running condition, the following operations must be monitored, performed and entered in the register: checking of tightness, testing of oil acidity,recording of pressure, temperatures, operation electric power and voltage, check the operation of the equipment/ comparison of the operating conditions against the original data of commissioning and the Instructions Book, checking the oil condition by means of the microscope at 1000 hours, 4000 hours, 5000 hours, 7000 hours, with the associated decisions of maintenance [2,12].
The screw compressors with oil injected screw have many advantages, such as: the rotor is directly coupled to the driving motor, which means costs reduction, oil injection ensures a tight seal between rotors and housing, namely protection against corrosion, diminution of noises, robustness and high reliability, exhaust temperature control, thus avoiding the problems caused by the dew point, tolerance to liquid particles, low vibrations.
To maintain the compressor in running condition, the following operations must be monitored, performed and entered in the register: checking of tightness, testing of oil acidity,recording of pressure, temperatures, operation electric power and voltage, check the operation of the equipment/ comparison of the operating conditions against the original data of commissioning and the Instructions Book, checking the oil condition by means of the microscope at 1000 hours, 4000 hours, 5000 hours, 7000 hours, with the associated decisions of maintenance [2,12].