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Online since: May 2024
Authors: Hanae Chabba, Meryem Taoufiki, Abderrahim Barroug, Ahmed Jouaiti, Hassane Mes-Adi
Furthermore, the atomic analysis results were presented using the data analysis and graphing software, ORIGIN [29].
2.
Figure 10 displays numerical data and graphical representations to visually convey changes in RDF s for both EAM and MEAM potentials.
Stukowski, Visualization and analysis of atomistic simulation data with OVITO–the Open Visualization Tool, Model.
Izumi, VESTA 3 for three-dimensional visualization of crystal, volumetric and morphology data, J.
Stukowski, Visualization and analysis of atomistic simulation data with OVITO–the Open Visualization Tool, Model.
Figure 10 displays numerical data and graphical representations to visually convey changes in RDF s for both EAM and MEAM potentials.
Stukowski, Visualization and analysis of atomistic simulation data with OVITO–the Open Visualization Tool, Model.
Izumi, VESTA 3 for three-dimensional visualization of crystal, volumetric and morphology data, J.
Stukowski, Visualization and analysis of atomistic simulation data with OVITO–the Open Visualization Tool, Model.
Online since: December 2014
Authors: German Alfonso Osma Pinto, Gabriel Ordóñez Plata, Laura Yazmin Amado Duarte, Rodolfo Villamizar Mejía
By means of data analysis and daylight curves, energy consumption and financial savings are determined.
It was demonstrated that a reduction of energy consumption of about 70%, 50% by daylighting and 20% by automation was obtained.
Andover Infinet Controllers operate the lamps and solar tubes by means of relays, while the BAS monitors these variables at a sample period of 3 minutes and more than 40 000 data are stored per day.
The required data for each office are: presence, dimming photocell (inputs of BAS), state of lamps, dimming ballasts, state of solar tubes (outputs of BAS), daylight contribution and energy consumption.
In order to estimate the annual energy behavior, data from May of 2014 were used to extrapolate the energy consumption for every month.
It was demonstrated that a reduction of energy consumption of about 70%, 50% by daylighting and 20% by automation was obtained.
Andover Infinet Controllers operate the lamps and solar tubes by means of relays, while the BAS monitors these variables at a sample period of 3 minutes and more than 40 000 data are stored per day.
The required data for each office are: presence, dimming photocell (inputs of BAS), state of lamps, dimming ballasts, state of solar tubes (outputs of BAS), daylight contribution and energy consumption.
In order to estimate the annual energy behavior, data from May of 2014 were used to extrapolate the energy consumption for every month.
Online since: September 2011
Authors: E Chuan Yan, Wei Mao, Kun Song, Ting Ting Zhang
After that, the deformation failure are simulated by the FLAC3D code, and the results are compared to the monitoring data.
Paper has also made comparative analysis of displacement data of the actual monitoring of landslide in Three Gorges Reservoir.
Fig.1 Engineering geological profile of Landslide Fig.2 The landslide monitoring main sliding profile of the monitoring and reservoir water level total cumulative displacement curve changes with time Analysis and Monitoring of Landslide Damage Degeneration According to GPS monitor data from monitor points which were set in the main slip surface of this landslide and the data obtained from macro geological survey, total displacement and changes in water level of this landslide can be analyzed comparatively.
In this simulation, monitoring data between august in 2008 and September in 2009 is taken as the calculation condition of numerical simulation.
Pore water pressure and stress field in the coupling function under no seepage mode is used in this numerical simulation of landslide deformation .First of all, transform seepage of the landslide under different calculation conditions into data file-water table face of FLAC3D, and the pore water pressure can be generated under no flow mode; then calculate stress and strain combined with numerical model of the landslide.
Paper has also made comparative analysis of displacement data of the actual monitoring of landslide in Three Gorges Reservoir.
Fig.1 Engineering geological profile of Landslide Fig.2 The landslide monitoring main sliding profile of the monitoring and reservoir water level total cumulative displacement curve changes with time Analysis and Monitoring of Landslide Damage Degeneration According to GPS monitor data from monitor points which were set in the main slip surface of this landslide and the data obtained from macro geological survey, total displacement and changes in water level of this landslide can be analyzed comparatively.
In this simulation, monitoring data between august in 2008 and September in 2009 is taken as the calculation condition of numerical simulation.
Pore water pressure and stress field in the coupling function under no seepage mode is used in this numerical simulation of landslide deformation .First of all, transform seepage of the landslide under different calculation conditions into data file-water table face of FLAC3D, and the pore water pressure can be generated under no flow mode; then calculate stress and strain combined with numerical model of the landslide.
Online since: December 2012
Authors: Costin Ene
Integral Sliding-Mode Control With Applications to Aircraft Dynamics
Costin ENE1, a
1Faculty of Aerospace Romania, University “Politehnica” of Bucharest, Romania, street Polizu no.1-7, RO-011061, Bucharest, Romania
ararik_cos@yahoo.com
Keywords: Sliding-mode control, integral control, chattering reduction, longitudinal dynamics, conditional integrator
Abstract.
The asymptotic regulation achieved by integral action [3] is followed by the reduction of the transient performance.
From [12], the nominal system data are: A=-1.019010.8223-1.0774, B=00.1756, C=01; Considering the approximation to be ideal, we can choose δe=-k2satk0σ+k1eμ.
The asymptotic regulation achieved by integral action [3] is followed by the reduction of the transient performance.
From [12], the nominal system data are: A=-1.019010.8223-1.0774, B=00.1756, C=01; Considering the approximation to be ideal, we can choose δe=-k2satk0σ+k1eμ.
Online since: July 2014
Authors: Xiong Wen Guo, Shi Hai Zhang, Zi Miao Zhang
The method effectiveness has been proved by experimental data analysis.
The EMD is driven by data itself and belongs to the time field method.
The new data series h1(t) can be obtained by subtracting the average envelope curve m1(t) from original data series X(t).
(5) The new data series R1(t) can be gained by subtracting C1(t) from X(t)
Thirdly, considering of end effect,the middle and no contamination part of the IMF data series are intercepted as the effective data[4].
The EMD is driven by data itself and belongs to the time field method.
The new data series h1(t) can be obtained by subtracting the average envelope curve m1(t) from original data series X(t).
(5) The new data series R1(t) can be gained by subtracting C1(t) from X(t)
Thirdly, considering of end effect,the middle and no contamination part of the IMF data series are intercepted as the effective data[4].
Online since: February 2009
Authors: C. Mbohwa, Bukhosi Siso
Research Methodology
ZESA load forecast done on an annual basis provided a lot of primary data that were used.
The data were also complemented by most recent data collected by the utilities forming the Southern African Power Pool (SAPP) during the development of the pool plan in 2002.
Where data were missing typical international benchmarks were used.
Data on the performance of the local plants were obtained from the Zimbabwe Power Company (ZPC).
Data on imports were solicited and provided by Zimbabwe Electricity Transmission Company (ZETCO).
The data were also complemented by most recent data collected by the utilities forming the Southern African Power Pool (SAPP) during the development of the pool plan in 2002.
Where data were missing typical international benchmarks were used.
Data on the performance of the local plants were obtained from the Zimbabwe Power Company (ZPC).
Data on imports were solicited and provided by Zimbabwe Electricity Transmission Company (ZETCO).
Online since: September 2015
Authors: Alexander Nikolaev, Evgeniy Povelitsa, Gennady Kornilov
In order to study the variable data of the complex non-linear system, the research group made use of a mathematical model, which takes into account the parameters of the hydraulic drive, power supply system, short circuit and the electric arc [3-5].
The analysis data for one of the heats is summarized in a table where the effect of the improved system application is shown for each analyzed parameter.
Reduction of specific power consumption can be explained by reduction of the amplitude of oscillation in the process of electrode movement and by reduction of current variability.
In these conditions the direct calculation and comparison of specific power consumption for the LF using different control systems is incorrect as it cannot reflect the exact contribution of each system to reduction of power consumption because of changing technological parameters.
The analysis data for one of the heats is summarized in a table where the effect of the improved system application is shown for each analyzed parameter.
Reduction of specific power consumption can be explained by reduction of the amplitude of oscillation in the process of electrode movement and by reduction of current variability.
In these conditions the direct calculation and comparison of specific power consumption for the LF using different control systems is incorrect as it cannot reflect the exact contribution of each system to reduction of power consumption because of changing technological parameters.
Online since: April 2019
Authors: Norihan Yahya, Ahmad Ridzwan Bin Ab Rahim, Mardhiah Abdullah
Research on the usage of rare earth doped glass as sensor, medical application, and optical data storage have been increasing for the past few years [1].
Glasses doped with rare earth show interesting potential application in many areas such as optical data storage, sensors, and optoelectronic devices.
The reduction of density from 2.4643 g/cm3 to 2.4348 g/cm3 might be because of the Nd2O3 occupation between 0.8 to 1.0 mol% in the free space of glass network structure, and this had led to reduction of glass structure compactness.
By decreasing alkaline oxide, the reduction of oxygen in the boron structural from BO4 to BO3 had caused in the reduction of OPD.
Glasses doped with rare earth show interesting potential application in many areas such as optical data storage, sensors, and optoelectronic devices.
The reduction of density from 2.4643 g/cm3 to 2.4348 g/cm3 might be because of the Nd2O3 occupation between 0.8 to 1.0 mol% in the free space of glass network structure, and this had led to reduction of glass structure compactness.
By decreasing alkaline oxide, the reduction of oxygen in the boron structural from BO4 to BO3 had caused in the reduction of OPD.
Online since: November 2005
Authors: Isabel Gutiérrez, Ane Martínez-de-Guereñu, F. Arizti, M. Oyarzabal
However, recovery data are quite scarce for commercial steel grades.
Experimental procedure An industrially produced Ti-Nb stabilized interstitial free (IF) ultra low carbon (ULC) steel, cold rolled to a final thickness of 0.8mm through a reduction of 75%, was isothermally annealed in the laboratory.
The process of the reduction in the dislocation density caused by the recovery is expected to decrease the density of pinning sites for the motion of magnetic domain walls in the matrix, which is reflected as a decrease in Hc.
The values of the a and b coefficients in Eq. 5 fitted to the experimental data of the present IF steel are plotted as a function of the annealing temperature in Fig. 5.
The increasing effect of Hc due to the decrease in the mean grain size was supposed to compensate for the reduction produced in Hc by the drop in the dislocation density during recrystallization.
Experimental procedure An industrially produced Ti-Nb stabilized interstitial free (IF) ultra low carbon (ULC) steel, cold rolled to a final thickness of 0.8mm through a reduction of 75%, was isothermally annealed in the laboratory.
The process of the reduction in the dislocation density caused by the recovery is expected to decrease the density of pinning sites for the motion of magnetic domain walls in the matrix, which is reflected as a decrease in Hc.
The values of the a and b coefficients in Eq. 5 fitted to the experimental data of the present IF steel are plotted as a function of the annealing temperature in Fig. 5.
The increasing effect of Hc due to the decrease in the mean grain size was supposed to compensate for the reduction produced in Hc by the drop in the dislocation density during recrystallization.
Online since: May 2020
Authors: Denis K. Egiazaryan, O.Yu. Sheshukov, M.A. Mikheenkov
It ensures the zinc oxide reduction and its sublimation at the temperature of about 1100 °C.
The possibility of the zinc sulfide carbothermal reduction by limestone with the calcium sulfide (CaS) formation was shown in [18].
Thermodynamic Analysis of the Process The Waelz process is based on the zinc oxide reduction to metal zinc using carbon-containing material by the 1 reaction.
The dosage of the components of the raw mixture was carried out in accordance with the data presented in Table 6.
Phase Chemical formula On slag crushed stone On Portland cement clinker Helenite 2CaO·SiO2·Al2O3 35.69 14.69 Calcium sulfide СаS 53.62 17.26 Diopside CaO·MgO·2SiO2 10.69 0 Calcium Olivine 2CaO·SiO2 0 21.88 Grossulyar Ca3Al2[SiO4]3 0 15.94 Mayenite 12CaO·7Al2O3 0 8.22 Larnit 2CaO·SiO2 0 22.01 The results of roasting confirmed the thermodynamic analysis data.
The possibility of the zinc sulfide carbothermal reduction by limestone with the calcium sulfide (CaS) formation was shown in [18].
Thermodynamic Analysis of the Process The Waelz process is based on the zinc oxide reduction to metal zinc using carbon-containing material by the 1 reaction.
The dosage of the components of the raw mixture was carried out in accordance with the data presented in Table 6.
Phase Chemical formula On slag crushed stone On Portland cement clinker Helenite 2CaO·SiO2·Al2O3 35.69 14.69 Calcium sulfide СаS 53.62 17.26 Diopside CaO·MgO·2SiO2 10.69 0 Calcium Olivine 2CaO·SiO2 0 21.88 Grossulyar Ca3Al2[SiO4]3 0 15.94 Mayenite 12CaO·7Al2O3 0 8.22 Larnit 2CaO·SiO2 0 22.01 The results of roasting confirmed the thermodynamic analysis data.