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Online since: August 2024
Authors: Mario Saggio, Alfio Guarnera, Angelo Sciacca, Alessandra Cascio, Alessandra Raffa, Edoardo Zanetti, Luciano Salvo, Mario Pulvirenti, Daniela Cavallaro
Modeling Flow Description and New SiC MOSFET Layout Proposal Simulation approach A modelling strategy based on the concept of system complexity reduction has been applied to SiC power MOSFET [2], [3].
Table I Switching losses data for STD and new layout at 25°C Table II Switching losses data for STD and new layout at 200°C (a) (b) Fig. 5.
Greco, System complexity reduction approach in the modelling of a discrete power, in Proceedings of the 2018, Power Conversion and Intelligent Motion (International Conference on Power Control)
Online since: February 2013
Authors: Tao Yue, Fan Wang, Bin Jie Han, Peng Lai Zuo, Fan Zhang
The reduction effects on elemental mercury emission by different control devices are shown in Fig. 1
Fig.1 Reduction effects of different control technologies on elemental mercury emission (5)Analysis of mercury emissions of the different coal byproducts Mercury proportions in coal by-products of total mercury are shown in Fig.2.
Sample name Hg (ng/g) Cement plant 1 Iron ore powder 11.9859 Limestone 30.0545 Silicon waste rock 7.0601 Fly ash 369.7598 Precipitator ash 6.0901 Cement plant 2 Limestone 11.0420 Silicon waste rock 6.5373 Limestone slag 27.8678 Sulfuric acid residue 166.1396 Cement plant 3 Iron ore powder 9.5362 Limestone 12.1612 Silicon waste rock 11.7516 Fly ash 664.1089 Cement plant 4 Ore slag 10.5384 Steel slag 7.5743 Bauxite 47.0390 Rock 797.8275 Limestone 6.7505 Coke powder 169.1279 Fig.4 Mercury concentration test results of the cement kiln flue gas Through the analysis of the data the following conclusions can be obtained: (1)For the limestone one of cement raw materials, mercury content was only 5.4% to 7.5% of the average mercury content of coal.
[5] He S, Zhou J S, Zhu Y Q, et al., Mercury Oxidation over a Vanadia-based Selective Catalytic Reduction Catalyst[J].
[10] Wo J J, Zhang M, Cheng X Y, et al., Hg2+ reduction and re-emission from simulated wet flue gas desulfurization liquors[J].
Online since: May 2012
Authors: Zhao Min Li, Song Yan Li
Flow rate data from the amplifier into the second meter reading can be easily and rapidly read.
During the experiment, if the reduction of formation variation coefficient after ball blocking is less than 40%, it is defined bad effect.
If the reduction is from 40% to 60%, it is defined moderate effect.
If the reduction is greater than 60%, it is defined good effect.
Table 5 Effect of total flow rate on diversion Flow rate ratio Total flow rate (m3/h) Injected ball number Blocking ball number of layer Flow rate of layer (m3/h) Variation coefficient before ball blocking Variation coefficient after ball blocking Variation coefficient reduction (%) Diversion effect 1 2 3 1 2 3 6:3:1 3.5 42 12 5 4 1.37 1.29 0.84 0.62 0.20 67.74 good 4.2 48 14 4 0 1.62 1.42 1.16 0.62 0.13 79.03 good 5 48 14 4 2 2.01 1.76 1.23 0.62 0.11 82.26 good 1:3:6 3.5 54 1 4 12 0.92 1.15 1.43 0.62 0.18 70.97 good 4.2 54 1 4 13 1.15 1.46 1.59 0.62 0.13 79.03 good 5 48 2 6 14 1.47 1.66 1.87 0.62 0.10 83.87 good Conclusions (1) Simulation lateral well for ball sealer diversion was established.
Online since: August 2017
Authors: Jörg Seewig, Barbara Linke, Jayanti Das, François M. Torner, Gerhard Stelzer
Tessellated data can be applied to mathematically describe components such as lenses as well as geometric surfaces in the form of such facets.
In the course of testing, different types of geometric surfaces, each calculated using confocal data, were measured with the sensor model .
Because the surface is anisotropic, ten steel samples taken at different times in the course of the process are used to analyze the data.
Using the data stated here, the mean coefficients of correlation are calculated to be 66.3 % (), 73.4 % () and 67.9 % ().
Individual variances (Refer to parameter for , sample F) can be attributed to faulty data.
Online since: November 2005
Authors: Klaus Hulka, Joachim Schöttler, V. Flaxa
Literature data [7] show, that skin-pass rolling with higher reduction degrees of up to 10% improve the fish-scale resistance, but adversely affect mechanical properties.
Lower reduction degrees would affect mechanical properties to a lesser extent, but in this case, the positive influence on fish-scale resistance vanishes.
In most cases, skinpass rolling of the hot-rolled materials with 2% reduction led to slightly lower susceptibility to fish-scale defect formation.
In most cases, cold-rolling leads to an increase in the number of precipitations per unit area, together with a reduction in the average particle size.
In most cases, cold-rolling leads to an increase in the number of precipitations per unit area, together with a reduction in the average particle size.
Online since: July 2011
Authors: Pang Wen Ling
The analysis is performed on historical and present data, but the goal to make financial projections.
The analysis is performed on historical and present data, but the goal to make financial projections.
Introduction In the random data, whether the concealing doesn't behave to know of the regulation is one of the popular topics of data analysis.
The numbers of the history data for fractal interpolation to prediction is dependent on the prediction error needed.
C., Strahle: Turbulent combustion data analysis using fractals (AIAA paper #90-07291990)
Online since: October 2014
Authors: Yu Wang Lai, De Feng Gu, Jun Hong Liu, Wen Ping Li, Dong Yun Yi
To overcome this difficulty, the gyro data, which is sensitive to the attitude motion, was used to fit the measurement attitude data to obtain the reference attitude.
Generally, the random noise can be filtered with the gyro data.
To conquer this difficulty, the gyro data, which is sensitive to the satellite attitude motion, was used to fit the measurement quaternion data of the star tracker by the EKF to obtain the reference quaternion which can represent as good as possible the orbit track.
Acknowledgments The authors are grateful to Beijing Institute of Tracking and Telecommunication Technology for providing the CCD01 and the APS01 star trackers attitude observation data, the gyro data and the GPS observation data of STECE satellite.
Reduction of Low Frequency Error for SED36 and APS based HYDRA Star Trackers, Proc.6th Internat.
Online since: October 2011
Authors: Ping Tan, Jian Zhu
At each hazard intensity level, a group of displacement data is obtained as the output of corresponding structural simulations
Each vertical line of scattered data corresponds to an intensity level.
A statistical distribution is fitted to the data for each intensity level on each vertical line.
The mean and standard deviation values of the response data are also given in the Fig.6.
The curves become flatter as the nature of the statistical distribution of the response data.
Online since: July 2011
Authors: Jun Mao, Guo Wei Mo
In order to analyze the dynamic characteristic of servo hydraulic system and optimal design parameters, cost reduction and shortened product development cycles.
Parameter of system performance name Count value name Count value supply oil pressure 20.23 Open-loop gain (rad/s) 34 The rated flow Q(L/min) 100 Servo valve resonant frequency (rad/s) 340 Maximum load torque T(N.m) 105 Motor damping coefficient 0.2 Feedback sensor gain 0.19 Motor displacement () Oil density 870 Hydraulic motor and load of total transmission inertia() Liquid equivalent elastic modulus volume Servo valve damping coefficient 0.7 Servo valve gain Motor resonance frequency (rad/s) 180 The data and the table 1 into type (4) have to system for digital closed-loop transfer function (5) System for digital open-loop transfer function (6) System of digital simulation Stability analysis of the system.
Online since: June 2013
Authors: Tao Liu, Rong Song
To study the accuracy and characteristics of neural network prediction calculation, 18 data sets were used as training samples and the No.6 and No.16 data sets were used as the validation data. 2.3 Neural network setting BP neural network was set to have three layers.
Take No.6 data set’s test values for example: Figure 1 shows the error percentage in calculation of the predictive values of No.6 data set when the number of calculation times was below 1000.
Wherein No.6 data set’s calculation error in 29 times vibrated within -20%~+20%; No.16 data set’s calculation error in 26 times vibrated within -20%~+20%.
Fig 4 :Data Processing Flow Chart Take No.6 data set for example and showcase its processing (the other three values are in similar case, you can calculate on your own).
Teaching Evaluation System through Network Based on Data Mining[J].
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