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Online since: June 2012
Authors: Hui Min Liu, Rui Lin Zhang, Zhu Hua Hu, Wei Jie Guo
Introduction Image de nosing is a key step in image processing, noise reduction is used as the pre-processing stage for segmentation, image analysis and interpretation.
Also, wavelet thresholding is a method which has been reported in several studies for noise reduction[1,2].
Through analyzing the experimental data and results, the proposed method preserves the image details and edges while effectively removing noise in the cameraman images.
Online since: June 2014
Authors: Saksorn Limwichean, Kamon Aiempanakit, Thanat Srichaiyaperk, Pitak Eiamchai, Mati Horprathum, Chanunthorn Chananonnawathorn, Pongpan Chindaudom
The results of the film thickness, in comparison with those from SEM, were shown in Fig.2(b) The corresponding data between two techniques indicated that the physical and optical SE models were sufficiently accurate to analyze the WO3 thin films.
As the annealing was increased, thin film annealing treatment at 200oC has spectral transmittance increase due to film has higher transparency, while film annealing treatment at 300-400°C show the reduction in transmittance.
Finally, the optical transmittance spectra show the reduction in the transmittance because of the increased grain size and the oxygen deficiency at the higher substrate temperatures. 5.
Online since: December 2013
Authors: Bang Quan Yan, Qin Li, Jian Sheng Zhang
This paper calculated the development level of economy and environment in Chongqing with the relevant statistical data of Chongqing from 1997 to 2011, and analyzed the coordination degree of economy and environment.
However, AHP has subjectivity on the confirmation of the weight of the index and the result would easily lack fidelity, while PCA realizes the data dimension reduction through the method of projection, and transfers the multi-index into some representative comprehensive index on the base of losing few data, not only eliminates the collinearity between the index, but also makes full use of the index of the information provided, and ensures the reliability of the results.
Meanwhile, the Expert Evaluation Method is adopted to the indexes with partly data unavailably.
The Results Analysis According to the above analysis, using statistical data in Chongqing estimates of their level of economic development and environmental development, and analyzes the coupling coordination between them.
Conclusions This paper has taken the advantage of the relevant statistical data of Chongqing 1997-2011, calculated the development level of economy and environment in Chongqing, and analyzed the coordination degree between economy and environment.
Online since: October 2014
Authors: Ran Liu, Jian Zhong Sun, Wei Dong Li, Da Yong Yu, Wen Gang Zhao
This paper presents an adaptable controlling approach on account of the mathematic modeling and the quantitative analysis of experimental data on a ring-coupling controlling structure.
Put forward an algorithm to predict the current value trend of offset using historical data, and adjust the motor torque given value according to the predictive value, further improving the synchronization performance.
The control structure is a close-loop control for synchronization indicator, and can effectively improve the synchronization performance combined with the data driven control algorithm.
PLC is used to achieve real-time monitoring of the experimental data and varying control methods.
Put forward an algorithm to predict the current value trend of offset using historical data, and adjust the motor torque given value according to the predictive value, further improving the synchronization performance.
Online since: June 2012
Authors: Lei He, Qian Jian Guo, Chong Zhi Mao
The numerical simulation was performed using FLUENT, a commercial computational fluid dynamics (CFD) code, to compare simulation results to the test data.
The computations were executed repeatedly until the temperature profiles just before the change over are the same as the previous data, periodic steady state.
The data acquisition system recorded all sensor values.
Data were saved as data files for analysis.
Moreover, the model was validated with the experimental data.
Online since: May 2012
Authors: Guo Lin Bao, Hong Qi Hui
Grey system theory can effectively deal with incomplete and uncertain information using only a few data points.
Grey prediction gained popularity in the past decade because of its simplicity and ability to characterize unknown system by using a few data points.
That is, only CO2 emissions data series are concerned.
MAPE for model evaluation[7] MAPE(%) Forecasting power >50 Weak and inaccurate forecasting 20~50 Reasonable forecasting 10~20 Good forecasting <10 Highly accurate forecasting Data sources CO2 emissions come from energy consumption, industry production, agriculture plant, litter emission and so on.
The forecasting data from 2011 to 2020 and carbon intensity are shown in Table 4.
Online since: August 2021
Authors: Alexey S. Lileev
The simulation results were compared to experimental data for the Sm(Co, Fe, Cu, Zr)7.5 type of alloy.
The results of the simulated experiment calculated in the FRMR program are used as input data for the Analyzer program.
Results and Discussion The demagnetization curves of the Sm(Co, Fe, Cu, Zr)7.5 alloy samples were taken to compare the simulation results and experimental data. 1.
According to the literature data of such heat treatment the alloy is a single phase solid solution with crystal structure of the hexagonal modification Sm2Co17 [4].
Conclusions The comparison of the experimental data with the results of domain structure modeling after various stages of heat treatment allows to reach the following conclusions: 1. 
Online since: March 2014
Authors: Jean Petit, Christine Sarrazin-Baudoux, Mandana Arzaghi
Even though a certain number of studies have been carried out for investigating static and fatigue properties of UFG metals, very few data on fatigue crack growth resistance are available[2, 3].
Closure measurement procedure: (a) Compliance curve obtained from the gauge on the back face of the CT specimen, (b) packing per 20 data points (c) slope fitting, (d) Pop calculated after signal treatment shown schematically above.
This approach permits to reduce considerably the scatter observed when the raw data is used directly.
Fatigue crack propagation in air Figure 2 shows relationships between the fatigue crack growth rates da/dN and the stress intensity factor ΔK in the ECAPed specimen together with the reference data for conventional copper polycrystal.
Available experimental data on copper [14] are very near to these estimations where the inclination angle is reported to be 27°.
Online since: February 2013
Authors: Xue Song He, Hui Quan Li, Bo Ye, Guo Meng Huang, Zhang Zhou He
Some researchers discuss the testing of a prototype system, as well as the analysis of the test data, and the development of the conclusions.
It can be seen from the above data, charging station in the actual operation situation of energy consumption or "load factor" varies greatly.
In the case of electricity infrastructure remains the same status, control unit of power supply and unit of data acquisition can also be used in other power supply equipments in an electric vehicle.
It connects a power grid with the inverter/charger system fits UL 1741 for safety and provides the data acquisition system.
At the same time, achieve the purpose of energy conservation and emission’s reduction.
Online since: May 2014
Authors: Andrew H.C. Chan, Xi Lin Cui, John Bridgeman, Jun Li
In addition, data transfer between different processors shall be kept to a minimum as much as possible.
Data of the particles straddling more than one sub-domain and touching particles in other processers need to be shared among all sub-domains involved.
In order to make the data synchronisation simple, overlapping areas with the width identical to maximum diameter of particles are set around each sub-domain.
Hence, only the data of the particles located within the overlapping areas need to be synchronised.
As it is also observed and studied by [1], the reason was proved to be the ‘pseudo-vector processing capacity’, indicating that the reduction of the array inner loop size caused a save in runtime in the array operation for an equal amount of data.
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