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Online since: April 2021
Authors: Nataliya V. Mokrova
Group Method of Data Handling.
Group method of data handling (GMDH) [17-18] is used in a wide variety of areas for data analysis, system modeling, optimization, and image recognition.
Checking the end-of-search condition is based on using data from the Mk.
The nature of the experimental data, namely the results of four deposition cycles under different process conditions, makes it fairly easy to divide the original data into subsets.
Another important advantage of this method is a significant reduction in the number of experimental data required to build a model, compared to other methods, due to repeated use of information for different combinations of input variables.
Group method of data handling (GMDH) [17-18] is used in a wide variety of areas for data analysis, system modeling, optimization, and image recognition.
Checking the end-of-search condition is based on using data from the Mk.
The nature of the experimental data, namely the results of four deposition cycles under different process conditions, makes it fairly easy to divide the original data into subsets.
Another important advantage of this method is a significant reduction in the number of experimental data required to build a model, compared to other methods, due to repeated use of information for different combinations of input variables.
Online since: August 2013
Authors: Jing Yu Guo, Ran Yang, Zhi Gang Hu, Wei Dong Song, Gao Feng Liang, Xiao Li Yang, Xiao Wei Son
Pre-processing of The Data.
Correction of Synthetic Data.
Figure 1: Synthetic data correction.
Correction of Experimental Data.
The method can be applied at an early stage of automated data analysis, without prior knowledge of the data.
Correction of Synthetic Data.
Figure 1: Synthetic data correction.
Correction of Experimental Data.
The method can be applied at an early stage of automated data analysis, without prior knowledge of the data.
Online since: October 2014
Authors: Li Qun Shang, Shou Peng Wang
Nonlinear Principal Component Analysis
Traditional PCA is a linear dimensionality reduction technique.
On one hand, the principal component is a linear combination of the original index, on the other hand, the standardization of original data makes the covariance matrix become the correlation coefficient matrix.
Firstly, the original data is transformed by using the "logarithm centralized", (1) Where, is the observed value of the NO.j index of the NO.i sample, .
Generally, the effect of dimensionality reduction can be improved by transforming the original data.
Therefore, nonlinear PCA plays a role in dimension reduction and simplification of the problem.
On one hand, the principal component is a linear combination of the original index, on the other hand, the standardization of original data makes the covariance matrix become the correlation coefficient matrix.
Firstly, the original data is transformed by using the "logarithm centralized", (1) Where, is the observed value of the NO.j index of the NO.i sample, .
Generally, the effect of dimensionality reduction can be improved by transforming the original data.
Therefore, nonlinear PCA plays a role in dimension reduction and simplification of the problem.
Online since: June 2010
Authors: Michihiro Sato, Tetsuya Ohashi, Takuya Maruizumi, Isao Kitagawa, Keisuke Aikawa
The lattice friction stress is known to depend on deformation temperature, but
as far as the authors know, experimental data are not obtained yet.
Table 1 Material data used in the analyses temperature dependence of the lattice friction is assumed to be the same to that of the hardeness data.
Table 1 summarizes material data used in this study.
Comparison of data shows that shallower trench results in higher density of dislocations.
Results showed that reduction of gate length and trench depth both caused an increase of dislocation density.
Table 1 Material data used in the analyses temperature dependence of the lattice friction is assumed to be the same to that of the hardeness data.
Table 1 summarizes material data used in this study.
Comparison of data shows that shallower trench results in higher density of dislocations.
Results showed that reduction of gate length and trench depth both caused an increase of dislocation density.
Online since: September 2014
Authors: Arthur K. Abkaryan, Aleksandr S. Binchurov, Vitaly B. Yasinski, Yuriy I. Gordeev
The reduction of the carbide grain average size was found as well (owing to nanoparticles blocking influence on re-crystallization).
A satisfactory coincidence of experimental and calculated data in the range of nanoparticles additives that do not overcome the critical concentration have been found out.
The measured data (Kic) was in a good accord with calculated from model for hard metals with mass content of nanoparticles approximately in the range 0.005-0.25.
To obtain data concerning influence of particles on properties of hard metals, each test series (beginning with preparation of initial powders) included a production of Standard basic alloys' control samples.
Adhesion wear reduction at all marks of modified hard metals was confirmed indirectly (on value reduction of surface roughness - Ra).
A satisfactory coincidence of experimental and calculated data in the range of nanoparticles additives that do not overcome the critical concentration have been found out.
The measured data (Kic) was in a good accord with calculated from model for hard metals with mass content of nanoparticles approximately in the range 0.005-0.25.
To obtain data concerning influence of particles on properties of hard metals, each test series (beginning with preparation of initial powders) included a production of Standard basic alloys' control samples.
Adhesion wear reduction at all marks of modified hard metals was confirmed indirectly (on value reduction of surface roughness - Ra).
Online since: September 2014
Authors: M. Goreshnev, E. Litvishko
The comparison of experimental and calculated data has been conducted.
However, the application of stochastic method requires numerous experimental data.
The authors suggested a block model of heat and moisture transfer on the bases of the obtained data.
Figure 3.Timber heating Final calculated data of each period is assigned to the initial data of the second period.
The satisfactory convergence between mathematical calculations and experimental data is described.
However, the application of stochastic method requires numerous experimental data.
The authors suggested a block model of heat and moisture transfer on the bases of the obtained data.
Figure 3.Timber heating Final calculated data of each period is assigned to the initial data of the second period.
The satisfactory convergence between mathematical calculations and experimental data is described.
Online since: November 2016
Authors: Melanie Klein, Josefine Jahn, Johannes Boehner, Rolf Steinhilper
At the same time a weight reduction has to be achieved and the manufacturing costs have to be considered.
A weight reduction of the trackers up to 60 % was possible.
Starting basis was a market analysis of existing ultralight helicopters with regard to technical data, range of application and maximum take-off weight.
The substitution of the aluminum parts of the frame enables a weight reduction of about 45 %.
The substitution of the steel landing skid even enables a weight reduction of about 50 %.
A weight reduction of the trackers up to 60 % was possible.
Starting basis was a market analysis of existing ultralight helicopters with regard to technical data, range of application and maximum take-off weight.
The substitution of the aluminum parts of the frame enables a weight reduction of about 45 %.
The substitution of the steel landing skid even enables a weight reduction of about 50 %.
Online since: June 2014
Authors: Li Juan Yang, Ling Ling Chen, Xiang Qian Li
It first analysed the available measures regarding the reduction of ECPGDP.
The ECPGDP of Daxing District in 2010 was 0.776tce/104 CNY If there is no special declaration, the data about Daxiang District in the paper are all sources from Compilation of Economic and Social Statistics Data of Daxing District in the 11th period, Compiled by Bureau of Statistics of Daxing District, 2011, 7
The forecast value is calculated based on the time series data of permanent resident population of Daxing District form 2002~2010.
For Daxing District, because the data of energy losses are counted in the energy consumption, the measure of reducing energy loss will not be discussed here.
So, the latter two are the emphasis on the reduction of the energy intensity.
The ECPGDP of Daxing District in 2010 was 0.776tce/104 CNY If there is no special declaration, the data about Daxiang District in the paper are all sources from Compilation of Economic and Social Statistics Data of Daxing District in the 11th period, Compiled by Bureau of Statistics of Daxing District, 2011, 7
The forecast value is calculated based on the time series data of permanent resident population of Daxing District form 2002~2010.
For Daxing District, because the data of energy losses are counted in the energy consumption, the measure of reducing energy loss will not be discussed here.
So, the latter two are the emphasis on the reduction of the energy intensity.
Online since: February 2011
Authors: Gouda M. Ghanem, Mohamed M. Ebd-Elrazek, Sayed M. Abd El-Bakey, Ahmend Ali Hassan, Esraa Emam Ali
In order to verify the analytical model used in this research using test results of the experimental data of the experimental branch, the finite element analysis were performed then to be able to proposed a guide charts which can be used to predict the moment capacity of joint in beam-column connection in RC frames subjected to fire taking into consideration the different fire durations, fire temperature, and concrete strength.
It can be seen that from the this charts that the ratio between the Mf to Mo ranged from 0 to 1 and this explained that as the temperature increase the ratio decreased and this attributed to the reduction in the stiffness of section capacity which is subjected to fire, also it can be demonstrated that as the temperature increase with the increase in the concrete compressive strength the ratio between Mf to Mo increased and also it can be seen that from this chart that as the duration which the joint subjected to fire increase the ratio between Mf to Mo decreased.
Finally it can be seen that these charts Considered a guide charts which can enable the designer to estimate the reduction in the moment capacity of the critical sections in two hinged and one bay RC frames after subjecting Conclusions This paper can conclude the following:
- Quenching the specimens by water caused a reduction in failure load at 600°C by 21% compared to control specimen
- Cooling the specimen by air caused a reduction in failure load by 6.7% compared to control specimen, which indicate that cooling by air is less effective than cooling by water.
It can be seen that from the this charts that the ratio between the Mf to Mo ranged from 0 to 1 and this explained that as the temperature increase the ratio decreased and this attributed to the reduction in the stiffness of section capacity which is subjected to fire, also it can be demonstrated that as the temperature increase with the increase in the concrete compressive strength the ratio between Mf to Mo increased and also it can be seen that from this chart that as the duration which the joint subjected to fire increase the ratio between Mf to Mo decreased.
Finally it can be seen that these charts Considered a guide charts which can enable the designer to estimate the reduction in the moment capacity of the critical sections in two hinged and one bay RC frames after subjecting Conclusions This paper can conclude the following:
- Quenching the specimens by water caused a reduction in failure load at 600°C by 21% compared to control specimen
- Cooling the specimen by air caused a reduction in failure load by 6.7% compared to control specimen, which indicate that cooling by air is less effective than cooling by water.
Online since: July 2016
Authors: Serene Sow Mun Lock, Irene Sow Mei Lock, Azmi Mohd Shariff, Yin Fong Yeong, Kok Keong Lau, Bawadi Abdullah
The applicability of the mathematical model has been validated with experimental aging data, whereby a small deviation is observed between the two over a wide range of film thicknesses and reasonable intuitive explanation pertaining to the parameters is obtained.
The free volume reduction attributed to lattice contraction stops at a glassy value,. 2.
To demonstrate the applicability of the developed model, it has been validated adapting aging experimental data of oxygen permeability for bisphenol-A polycarbonate (BPA-BnzDCA) polymeric films by McCaig, et al. (2000) [9], as demonstrated in Fig. 2.
In addition, this contention has been further supported by McCaig, et al. [4] that a value of between 3 and 5 hrs is reasonable and gives agreeable accordance to aging data.
Therefore, there are remaining two parameters, and , left to be curve fitted employing two sets of experiment aging data at varying film thicknesses, which have been further extended to a wide range of thicknesses (0.25 to 33 microns) to verify the capability of the mathematical model.
The free volume reduction attributed to lattice contraction stops at a glassy value,. 2.
To demonstrate the applicability of the developed model, it has been validated adapting aging experimental data of oxygen permeability for bisphenol-A polycarbonate (BPA-BnzDCA) polymeric films by McCaig, et al. (2000) [9], as demonstrated in Fig. 2.
In addition, this contention has been further supported by McCaig, et al. [4] that a value of between 3 and 5 hrs is reasonable and gives agreeable accordance to aging data.
Therefore, there are remaining two parameters, and , left to be curve fitted employing two sets of experiment aging data at varying film thicknesses, which have been further extended to a wide range of thicknesses (0.25 to 33 microns) to verify the capability of the mathematical model.