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Online since: December 2014
Authors: Benjamin Schmidt, Patrick Flannery, Mark DeSantis
Energy data science is the best solution to protect consumers against the electricity market's inefficiencies.
Price prediction mechanisms in the field of energy data science (EDS) are solving this issue.
EDS has become possible through both a vast increase in available market data and an ability of our Energy Data Scientists to interpret that data to produce pricing opportunities.
These classification models allow our Energy Data Scientists to identify the underlying state of the grid.
Clouds, Big Data, and Smart Assets: Ten Tech-enabled Business Trends to Watch.
Price prediction mechanisms in the field of energy data science (EDS) are solving this issue.
EDS has become possible through both a vast increase in available market data and an ability of our Energy Data Scientists to interpret that data to produce pricing opportunities.
These classification models allow our Energy Data Scientists to identify the underlying state of the grid.
Clouds, Big Data, and Smart Assets: Ten Tech-enabled Business Trends to Watch.
Online since: May 2005
Authors: Valeri V. Afanas'ev, Florin Ciobanu, Gerhard Pensl, Adolf Schöner
A thin surface-near layer, which is highly N-doped during the
chemical vapour deposition growth, leads to a reduction of DIT only close to the conduction band
edge.
peak position (cm -3) 30 min anneal at 1500°C in Ar max. peak position/in-situ N-doped layer dmax (nm) consumed SiC-layer dcons (nm) UFB (V) integrated DIT (cm -2) (EC - (0.1 to 0.6 eV)) #1 not-implanted - - 46 +2.4 2.7 x 10 13 #2 2 x 1017 no 30 46 +1.5 2.4 x 1013 #3 7 x 1017 no 30 46 -0.1 ≈ 8 x 1012 #4 1 x 1018 no 30 46 -1.5 ≈ 3 x 1012 #5/5a 3 x 1018 no/yes 30 46 -9.4 7.5 x 109 #6/6a 7 x 1018 no/yes 30 46 -14.1 6.5 x 1011 #7/7a 1 x 1019 no/yes 30 46 -30 4.6 x 1011 #8 3 x 1019 yes 45 45 < -40 no data #9 3 x 1019 yes 45 90 -5.4 6.0 x 1010 #10 in situ, 3 x 1018 - 30 12 +1.2 ≈ 2 x 1013 #11 in situ, 3 x 1018 - 30 39 +2.6 2.2 x 1013 MOS capacitors.
The corresponding curves of sample #11 in Figs. 2 and 3 (see squares) show no large shift of the flat-band voltage and a reduction of DIT only close to the conduction band edge (reduction of NITs).
peak position (cm -3) 30 min anneal at 1500°C in Ar max. peak position/in-situ N-doped layer dmax (nm) consumed SiC-layer dcons (nm) UFB (V) integrated DIT (cm -2) (EC - (0.1 to 0.6 eV)) #1 not-implanted - - 46 +2.4 2.7 x 10 13 #2 2 x 1017 no 30 46 +1.5 2.4 x 1013 #3 7 x 1017 no 30 46 -0.1 ≈ 8 x 1012 #4 1 x 1018 no 30 46 -1.5 ≈ 3 x 1012 #5/5a 3 x 1018 no/yes 30 46 -9.4 7.5 x 109 #6/6a 7 x 1018 no/yes 30 46 -14.1 6.5 x 1011 #7/7a 1 x 1019 no/yes 30 46 -30 4.6 x 1011 #8 3 x 1019 yes 45 45 < -40 no data #9 3 x 1019 yes 45 90 -5.4 6.0 x 1010 #10 in situ, 3 x 1018 - 30 12 +1.2 ≈ 2 x 1013 #11 in situ, 3 x 1018 - 30 39 +2.6 2.2 x 1013 MOS capacitors.
The corresponding curves of sample #11 in Figs. 2 and 3 (see squares) show no large shift of the flat-band voltage and a reduction of DIT only close to the conduction band edge (reduction of NITs).
Online since: August 2013
Authors: Tao Zan, Zhen Kun Hu, Ming Wang
Lab Correlation module not only supports the correlation analysis between the simulation model and the test data, modify the simulation model, but also provides guidance and help for the test structure, can be very convenient for comparative analysis of simulation results and experimental results.
Lab uses DOF reduction to produce the Test Analysis Modal (TAM), which reduces the freedom degrees of the finite element model to the test model.
Fig. 4 The finite element modal results reduction Fig.5 Mac matrix graph Table 1 Boring bar modal correlation MAC matrix Order Test mode Finite element mode MAC Difference 1 138.0 140.8 0.912 2.75 2 1117.5 1169.5 0.827 52.00 3 2375.3 2330.7 0.714 44.60 The other four kinds of rubbers is respectively analyzed according to the above steps.
Table 2 Rubber parameters used in the simulation Material Modulus of elasticity[MPa] Poisson's ratio Damping coefficient[Ns/m] Stiffness [N/mm] ordinary rubber 2.65 0.48 1.2 1.25e5 EPDM rubber 7.84 0.48 1.1 1.35e5 Nitrile butadiene rubber 5.15 0.48 1.4 1.31e5 Fluorine rubber 8.5 0.48 1.1 1.38e5 Silica gel 2.14 0.48 1.3 1.2e5 Conclusions Vibration is an undesirable phenomenon in machining processes because it results in the reduction of material removal rate, poor surface finish and increase of tool wear.
Modal test data adjustment for interface compliance [C].
Lab uses DOF reduction to produce the Test Analysis Modal (TAM), which reduces the freedom degrees of the finite element model to the test model.
Fig. 4 The finite element modal results reduction Fig.5 Mac matrix graph Table 1 Boring bar modal correlation MAC matrix Order Test mode Finite element mode MAC Difference 1 138.0 140.8 0.912 2.75 2 1117.5 1169.5 0.827 52.00 3 2375.3 2330.7 0.714 44.60 The other four kinds of rubbers is respectively analyzed according to the above steps.
Table 2 Rubber parameters used in the simulation Material Modulus of elasticity[MPa] Poisson's ratio Damping coefficient[Ns/m] Stiffness [N/mm] ordinary rubber 2.65 0.48 1.2 1.25e5 EPDM rubber 7.84 0.48 1.1 1.35e5 Nitrile butadiene rubber 5.15 0.48 1.4 1.31e5 Fluorine rubber 8.5 0.48 1.1 1.38e5 Silica gel 2.14 0.48 1.3 1.2e5 Conclusions Vibration is an undesirable phenomenon in machining processes because it results in the reduction of material removal rate, poor surface finish and increase of tool wear.
Modal test data adjustment for interface compliance [C].
Online since: March 2015
Authors: Xian Kui Zeng, Dong Zhen Wang, Zong Ting Zhang, Jian Min Ge, Chong Lv
Through the analysis of existing data, the shock absorber parameters optimization direction is determined.
Test load: light weight is 465 kg; Full weight to 705 Kg; Number of shock absorber: 29 / group; Test of vibration load (0.4 + / - 0.1) g; Incentives: on line test data as input test floor output response of the shock absorber and vibration reduction efficiency; With white noise excitation test floor shock absorber output response and damping efficiency. 2 The experiment results analysis Experiment is divided into light and loaded with two cases, this paper experiment was conducted under the condition of full load, and the experimental analysis results are as follows.
Line spectrum incentive The line spectrum of shock absorber incentive, you will be the original stiffness damper in accordance with the real vehicle installation structure and floor, seat, and test equipment, when they are assembled and under the condition of full load to test each measuring point vibration output response and vibration reduction efficiency.
With the stiffness increases, dynamic response to high frequency movement, with the increase of the damping peak, dynamic response of peak reduction, and the corresponding bandwidth increases.
Test load: light weight is 465 kg; Full weight to 705 Kg; Number of shock absorber: 29 / group; Test of vibration load (0.4 + / - 0.1) g; Incentives: on line test data as input test floor output response of the shock absorber and vibration reduction efficiency; With white noise excitation test floor shock absorber output response and damping efficiency. 2 The experiment results analysis Experiment is divided into light and loaded with two cases, this paper experiment was conducted under the condition of full load, and the experimental analysis results are as follows.
Line spectrum incentive The line spectrum of shock absorber incentive, you will be the original stiffness damper in accordance with the real vehicle installation structure and floor, seat, and test equipment, when they are assembled and under the condition of full load to test each measuring point vibration output response and vibration reduction efficiency.
With the stiffness increases, dynamic response to high frequency movement, with the increase of the damping peak, dynamic response of peak reduction, and the corresponding bandwidth increases.
Online since: June 2015
Authors: S.N. Fedoseev
Therefore, the development of steels and alloys, new brands of should undertake a systematic study to accumulate reliable data to establish the optimal concentration of technological additives.
Calculating the size of nonmetallic inclusions showed that for samples without modifying the data sizes of inclusions are in the range from 18 microns to 145 microns, and the sample after introducing a type modifier "MS" inclusion size in the range from 5 microns to 15 microns, i.e. observed a significant reduction in the size of non-metallic inclusions, which leads to a reduction in the range of sizes of inclusions and improves the density of the steel structure.
Mechanical properties of steel cores Sample Ultimate strength, kg/mm2 Yield strength, kg/mm2 Relative elongation, % Relative reduction, % Impact strength, kg-m/cm2 GOST 7370-98 80–90 36 25–30 22–27 20–25 Unmodified core 86.7 48 30.7 24.4 25 Modified core 89.5 48 38.0 29.6 25.2 Conclusion As a result, the modification does not change the basic chemical composition of the steel, but reduces the number and size of nonmetallic inclusions in the grain boundaries and also a decrease in grain size.
Calculating the size of nonmetallic inclusions showed that for samples without modifying the data sizes of inclusions are in the range from 18 microns to 145 microns, and the sample after introducing a type modifier "MS" inclusion size in the range from 5 microns to 15 microns, i.e. observed a significant reduction in the size of non-metallic inclusions, which leads to a reduction in the range of sizes of inclusions and improves the density of the steel structure.
Mechanical properties of steel cores Sample Ultimate strength, kg/mm2 Yield strength, kg/mm2 Relative elongation, % Relative reduction, % Impact strength, kg-m/cm2 GOST 7370-98 80–90 36 25–30 22–27 20–25 Unmodified core 86.7 48 30.7 24.4 25 Modified core 89.5 48 38.0 29.6 25.2 Conclusion As a result, the modification does not change the basic chemical composition of the steel, but reduces the number and size of nonmetallic inclusions in the grain boundaries and also a decrease in grain size.
Online since: May 2021
Authors: Veny Luvita, Setijo Bismo, Anto Tri Sugiarto
In addition, data on the removal of these compounds from water under alkaline conditions using the ozonation process in the plasma field were obtained in the form of the final concentration with varying exposure times, including 0, 15, 30, 45, 60, 75, 90, 105, and 120 min.
This triggers a reduction in pH as the process commences.
Furthermore, from the research conducted, data was obtained as in Figure 2 where the exposure time proved to be very influential in the p-chlorophenol concentration decrease.
This was due to the reduction in phenol decomposition products during the oxidation process.
Meanwhile, the COD reduction for the respective samples was 42.19%, 38.51%, and 48.34%.
This triggers a reduction in pH as the process commences.
Furthermore, from the research conducted, data was obtained as in Figure 2 where the exposure time proved to be very influential in the p-chlorophenol concentration decrease.
This was due to the reduction in phenol decomposition products during the oxidation process.
Meanwhile, the COD reduction for the respective samples was 42.19%, 38.51%, and 48.34%.
Online since: July 2015
Authors: Ivylentine Datu Palittin, Nia Kurniati, Daniel Kurnia, I.M. Sutjahja
We also study the amount of additives needed for effective reduction of subcooling and its phase stability by performing the cycling process.
The data are taken using time interval 5 second for total measurement time about 2.5 hours.
The experiments were repeated several times to obtain the cycling stability data of each sample.
The room temperature at each time the data were taken is also shown on each figure.
Data of the room temperature is also displayed.
The data are taken using time interval 5 second for total measurement time about 2.5 hours.
The experiments were repeated several times to obtain the cycling stability data of each sample.
The room temperature at each time the data were taken is also shown on each figure.
Data of the room temperature is also displayed.
Online since: October 2012
Authors: Li Min Sun, Xue Lian Li
The health monitoring system had collected a large amount of data since it was started for service in Sep 2006 and these data provided important basis for implementing correlation and structure state analysis[2].
The regression model and scatter diagram after rejecting the abnormal data is shown in Fig. 5.
In local section, the displacement deviations of the model output and actual data is much larger, such as the data in December.
Then when the displacement data monitored exceeds these two boundaries after calculation, give an alarm.
Still adopt 10 minute displacement average data wiped out abnormal data in 2007 for accumulative displacement regression model analysis, and the sample size is 35568.
The regression model and scatter diagram after rejecting the abnormal data is shown in Fig. 5.
In local section, the displacement deviations of the model output and actual data is much larger, such as the data in December.
Then when the displacement data monitored exceeds these two boundaries after calculation, give an alarm.
Still adopt 10 minute displacement average data wiped out abnormal data in 2007 for accumulative displacement regression model analysis, and the sample size is 35568.
Online since: June 2011
Authors: Fahrettin Ozturk, Serkan Toros, Suleyman Kilic
Experimental data required for the simulations for each model is tabulated in Table 3.
The simulation results and experimental data for springback under different deformation speeds were plotted as shown in Fig. 7(a-d) based on the sheet thicknesses.
It can be seen that simulation results of springback were in good agreement with experimental data.
The simulation results of springback were not in good agreement with experimental data.
Project Title: “Investigation of Using Biaxial Stretch Test Data for Finite Element Codes of Sheet Metal Forming”.
The simulation results and experimental data for springback under different deformation speeds were plotted as shown in Fig. 7(a-d) based on the sheet thicknesses.
It can be seen that simulation results of springback were in good agreement with experimental data.
The simulation results of springback were not in good agreement with experimental data.
Project Title: “Investigation of Using Biaxial Stretch Test Data for Finite Element Codes of Sheet Metal Forming”.
Online since: June 2014
Authors: Alain Gil del Val, Justino Fernández, Pedro María Diéguez, Miguel Arizmendi, Fernando Veiga
The aim of this paper consists on an industrial monitoring application to data coming from the current/torque signal of the tap spindle for assessing thread quality.
Consequently during tapping of each hole the spindle drive current/torque signal is captured, sampled at 1000 Hz, through data acquisition board and stored in a PC for analysis.
This is called dimensional reduction.
This variable will of course be a combination of the selected PCs after the PCA dimension reduction.
The system has three stages (Fig. 3); first is Data Acquisition System where the currents are captured, filtered and transformed into torque, second is the Data pre-processing System in which is calculated the areas and PCs and finally, the third stage is Monitoring System which calculates statistic and displayed in GV chart and switch on/off the alarm system.
Consequently during tapping of each hole the spindle drive current/torque signal is captured, sampled at 1000 Hz, through data acquisition board and stored in a PC for analysis.
This is called dimensional reduction.
This variable will of course be a combination of the selected PCs after the PCA dimension reduction.
The system has three stages (Fig. 3); first is Data Acquisition System where the currents are captured, filtered and transformed into torque, second is the Data pre-processing System in which is calculated the areas and PCs and finally, the third stage is Monitoring System which calculates statistic and displayed in GV chart and switch on/off the alarm system.