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Online since: September 2016
Authors: D. Mallikarjuna Reddy, Cherukuri Bhargav Sai
The nodal displacement data of damaged rotor is processed to obtain wavelet coefficients to detect, localise and quantify damage severity.
Because the wavelet coefficients are calculated with various scaled indices, local disturbances in the mode shape data can be found out in the finer scales that are positioned at local disturbances.
In the present work the displacement data are extracted from the MATLAB model at a particular speed.
Wen and Ying [7] proposed a method used for identifying structural damage by wavelet analysis using strain energy mode shape data.
By using mode shape data, damage can be identified if the reduction in diameter is less than 40%.
Because the wavelet coefficients are calculated with various scaled indices, local disturbances in the mode shape data can be found out in the finer scales that are positioned at local disturbances.
In the present work the displacement data are extracted from the MATLAB model at a particular speed.
Wen and Ying [7] proposed a method used for identifying structural damage by wavelet analysis using strain energy mode shape data.
By using mode shape data, damage can be identified if the reduction in diameter is less than 40%.
Online since: March 2014
Authors: Zhan Jun Gao, Xiao Guang Li
This stage can be divided into three sub- steps: data integration, data selection, data preprocessing.
Data Integration file or database to run multiple environments merge data processing to solve semantic ambiguity, omission of data processing and cleaning of dirty data.
The purpose is to identify the data selection of the desired set of data, reduction processing scope to improve the quality of data mining.
(4) Read data and to model Once the data has to be entered, and then is to use data mining tools to read data from which to construct a model.
How to store data in the data warehouse excavation become critical.
Data Integration file or database to run multiple environments merge data processing to solve semantic ambiguity, omission of data processing and cleaning of dirty data.
The purpose is to identify the data selection of the desired set of data, reduction processing scope to improve the quality of data mining.
(4) Read data and to model Once the data has to be entered, and then is to use data mining tools to read data from which to construct a model.
How to store data in the data warehouse excavation become critical.
Online since: September 2013
Authors: Clara Ceppa, Gian Paolo Marino
Focus on CO2 emission reduction through the creation of a local suppliers network.
The positive benefits of systemic acting/thinking/designing are given substance thanks to a greater traceability of materials and packaging components and their suppliers, as well as a higher quality of the entire supply-chain and a significant reduction of CO2 emissions and logistics costs.
Furthermore, these benefits result in a higher quality of the entire supply-chain, in a significant decrease of logistics costs as well as in the consequent reduction of CO2 emissions [2].
In order to go through a project with the SD approach, it is essential to start from the current state of the art and to make a peculiar observation of all the aspects necessary for the system to live (energy and material input) and of what occurs inside it (qualities and quantities data).
ACT LOCALLY: (a) using local materials it is possible to obtain a greater traceability of the resources used in industrial processes so as to ensure, by implication, a high quality finished product; (b) reduction of CO2 (actually its production is caused by a supply of raw materials and semi-finished products for packaging manufacturing which happens long away from the points of final packing); (c) reduction in energy consumption due to unnecessary transport. 4.
The positive benefits of systemic acting/thinking/designing are given substance thanks to a greater traceability of materials and packaging components and their suppliers, as well as a higher quality of the entire supply-chain and a significant reduction of CO2 emissions and logistics costs.
Furthermore, these benefits result in a higher quality of the entire supply-chain, in a significant decrease of logistics costs as well as in the consequent reduction of CO2 emissions [2].
In order to go through a project with the SD approach, it is essential to start from the current state of the art and to make a peculiar observation of all the aspects necessary for the system to live (energy and material input) and of what occurs inside it (qualities and quantities data).
ACT LOCALLY: (a) using local materials it is possible to obtain a greater traceability of the resources used in industrial processes so as to ensure, by implication, a high quality finished product; (b) reduction of CO2 (actually its production is caused by a supply of raw materials and semi-finished products for packaging manufacturing which happens long away from the points of final packing); (c) reduction in energy consumption due to unnecessary transport. 4.
Online since: November 2010
Authors: Bei Yue Ma, Jing Kun Yu, Ying Li
ZrN(ZrO2)/Si2N2O composite materials were synthesized by in-situ carbothermal reduction-nitridation process, with zircon and carbon black as raw materials.
The carbothermal reduction-nitridation reaction process was also discussed.
This over-stoichiometry of carbon black was necessary to promote the carbothermal reduction-nitridation reaction.
(J/mol), lg(pCO/pQ)=-10408/T+6.30 (14) (J/mol), lg(pCO/pQ)=-11126/T+6.12 (15) (J/mol), lg(pCO/pQ)=-13046/T+6.88 (16) Fig. 4 shows the predomination region diagram for ZrO2-SiO2-C-N2 system plotted by the thermodynamic data as shown in formulas (14)-(16), with T as horizontal axis and lg(pCO/pQ) as vertical axis.
Che: Data handbook of inorganic compound thermodynamics (Northeastern University Press, Shenyang, 1993).
The carbothermal reduction-nitridation reaction process was also discussed.
This over-stoichiometry of carbon black was necessary to promote the carbothermal reduction-nitridation reaction.
(J/mol), lg(pCO/pQ)=-10408/T+6.30 (14) (J/mol), lg(pCO/pQ)=-11126/T+6.12 (15) (J/mol), lg(pCO/pQ)=-13046/T+6.88 (16) Fig. 4 shows the predomination region diagram for ZrO2-SiO2-C-N2 system plotted by the thermodynamic data as shown in formulas (14)-(16), with T as horizontal axis and lg(pCO/pQ) as vertical axis.
Che: Data handbook of inorganic compound thermodynamics (Northeastern University Press, Shenyang, 1993).
Online since: October 2011
Authors: Gui Ling Ding
Strength reduction elasto-plastic finite element is a method that combined with the strength reduction technique, the limit equilibrium theory and the principle of elastic-plastic finite element, which firstly determine the stress, strain or displacement field of slope for a given strength reduction factor.
And the reduction factor is defined as the slope stability safety factor.
Calculation model and mechanical parameters According to the design and measured data, the calculation models are shown in Fig. 2~Fig. 6.
Table 4 Stability calculations of high fill embankment with limit equilibrium method Section(m) YK123+910 +920 +940 +960 +970 +980 YK124+020 YK124+040 Minimum stability factor 1.373 1.321 1.316 1.316 1.318 1.378 1.325 1.392 3D FE analysis of stability of High Rockfill Abrupt Slope Embankment Calculation model and mechanical parameters According to the design and measured data, the calculation models are shown in Fig.13~Fig.14.
Slope stability analysis by strength reduction[J].
And the reduction factor is defined as the slope stability safety factor.
Calculation model and mechanical parameters According to the design and measured data, the calculation models are shown in Fig. 2~Fig. 6.
Table 4 Stability calculations of high fill embankment with limit equilibrium method Section(m) YK123+910 +920 +940 +960 +970 +980 YK124+020 YK124+040 Minimum stability factor 1.373 1.321 1.316 1.316 1.318 1.378 1.325 1.392 3D FE analysis of stability of High Rockfill Abrupt Slope Embankment Calculation model and mechanical parameters According to the design and measured data, the calculation models are shown in Fig.13~Fig.14.
Slope stability analysis by strength reduction[J].
Online since: March 2010
Authors: Lan Hua Zhou, Fu Hong Zeng
The interaction of temperature and the amount of Na2CO3 have
negative influences on the degree of reduction and metallization.
Introduction In the direct reduction of iron oxide mixed pellet, it was found [1-4] that the minor amount of alkali metal, e.g.
It is generally agreed [8-12] that the reduction of iron oxides by carbon occurs through the gaseous intermediates CO and CO2.
In the experiment, it is found that Na2CO3 as addictive into VTMCN pellet will improve the reduction degree and metallization.
[6] Li Yun Yan and Hu Chuan Rong: Test design and data processing (Beijing Chemic Industry Press Publications, China 2005
Introduction In the direct reduction of iron oxide mixed pellet, it was found [1-4] that the minor amount of alkali metal, e.g.
It is generally agreed [8-12] that the reduction of iron oxides by carbon occurs through the gaseous intermediates CO and CO2.
In the experiment, it is found that Na2CO3 as addictive into VTMCN pellet will improve the reduction degree and metallization.
[6] Li Yun Yan and Hu Chuan Rong: Test design and data processing (Beijing Chemic Industry Press Publications, China 2005
Online since: December 2010
Authors: Shu Fen Chen, He Wang, Xue Li
By processing attribute reduction from data sample utilizing rough set theory, defects like bulkiness of neural network structure and difficult convergence etc are aovided when input dimensions is high.
Rule Reduction.
After determining the network structure, we should train it with error back propagation algorithm utilizing sample data shown in table 3.
Some sample data is shown in table 3.
Summary (1) Utilizing roughness set theory to conduct attribute reduction and rule reduction from data sample, which leads to reduction of network rule number resulting in simplify network structure and decrease learning time
Rule Reduction.
After determining the network structure, we should train it with error back propagation algorithm utilizing sample data shown in table 3.
Some sample data is shown in table 3.
Summary (1) Utilizing roughness set theory to conduct attribute reduction and rule reduction from data sample, which leads to reduction of network rule number resulting in simplify network structure and decrease learning time
Online since: September 2016
Authors: Shahram Aivazzadeh, Mohd Nasir Tamin, King Jye Wong, Xiao Jing Gong
In addition, good fits to the experimental data were found using the proposed residual strength model, with the maximum difference of less than 6%.
Comparing the remote tensile strength at each moisture content, it is observed that a reduction in the area of 20% (notched specimens) has led to strength reduction of maximum 51%.
After prolonged ageing, a maximum of 17% strength reduction was observed.
In addition, good fits with maximum difference of less than 6% were obtained by using the proposed residual strength model to fit the experimental remote tensile strength data.
This model has the advantage of reducing the amount of experimental works and more data is needed to further validate the applicability of this model to other materials.
Comparing the remote tensile strength at each moisture content, it is observed that a reduction in the area of 20% (notched specimens) has led to strength reduction of maximum 51%.
After prolonged ageing, a maximum of 17% strength reduction was observed.
In addition, good fits with maximum difference of less than 6% were obtained by using the proposed residual strength model to fit the experimental remote tensile strength data.
This model has the advantage of reducing the amount of experimental works and more data is needed to further validate the applicability of this model to other materials.
Online since: August 2013
Authors: Si Yang Liang, Zhuang Zhi Han, Feng Ju, Lin Shi, Yan Liu
Measured data verifies the feasibility of this method, which provides useful references for engineering application and lays foundation for further noise reduction and muzzle velocity extrapolation.
So that, through the high-speed triggering technology accomplished by high speed triggering radar, the measurement system record the time when the projectile just leave the muzzle and consider it as zero time of data extrapolation.
Finally, the muzzle velocity of projectile is obtained by data extrapolation.
Measured data analysis According to the above method, this article analyzes an echo signal of high firing rate artillery projectile.
Through the theory analysis and measured data validation, it proves the feasibility of the proposed method and provides useful reference for engineering practice.
So that, through the high-speed triggering technology accomplished by high speed triggering radar, the measurement system record the time when the projectile just leave the muzzle and consider it as zero time of data extrapolation.
Finally, the muzzle velocity of projectile is obtained by data extrapolation.
Measured data analysis According to the above method, this article analyzes an echo signal of high firing rate artillery projectile.
Through the theory analysis and measured data validation, it proves the feasibility of the proposed method and provides useful reference for engineering practice.
Online since: February 2021
Authors: Arshad Wazir, Imran Waseem Kundi, Wahib Noor Khan, Abdul Manan, Imdadullah Querashi, Khurram Yaqoob
The reduction of MI-RGO was supported by the UV and XRD studies.
Ruoff, Microwave assisted exfoliation and reduction of graphite oxide for ultracapacitors, Carbon 48 (2010) 2118-2122
Tascon, Vitamin C Is an Ideal Substitute for Hydrazine in the Reduction of Graphene Oxide Suspensions, The J.
Dai, Solvothermal Reduction of Chemically Exfoliated Graphene Sheets, J.
Yaminsky, Statistical analysis of atomic force microscopy and Raman spectroscopy data for estimation of graphene layer numbers, Phys.
Ruoff, Microwave assisted exfoliation and reduction of graphite oxide for ultracapacitors, Carbon 48 (2010) 2118-2122
Tascon, Vitamin C Is an Ideal Substitute for Hydrazine in the Reduction of Graphene Oxide Suspensions, The J.
Dai, Solvothermal Reduction of Chemically Exfoliated Graphene Sheets, J.
Yaminsky, Statistical analysis of atomic force microscopy and Raman spectroscopy data for estimation of graphene layer numbers, Phys.