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Online since: December 2010
Authors: Sarum Boonmee, Doru Michael Ştefănescu
A mechanism of casting skin formation
is proposed and supported with experimental and computational data.
For this sample, only one data point exhibits a value lower (or higher in the case of aspect ratio) than region III.
For the CG iron with 0.4 mm skin thickness, approximately 15.5% reduction in TS is observed.
The reduction in skin thickness resulted in improved TS (Fig. 10).
Comparison of experimental data (squares) and model prediction (solid line) at 1.5" metallostatic height [5] Fig. 14.
For this sample, only one data point exhibits a value lower (or higher in the case of aspect ratio) than region III.
For the CG iron with 0.4 mm skin thickness, approximately 15.5% reduction in TS is observed.
The reduction in skin thickness resulted in improved TS (Fig. 10).
Comparison of experimental data (squares) and model prediction (solid line) at 1.5" metallostatic height [5] Fig. 14.
Online since: June 2015
Authors: Andrey E. Kovtanyuk
The input data are obtained as a result of irradiations.
The single reconstruction corresponds to a separate radiographic data.
For each cross-section, data of 10201 irradiation lines were taken.
The data of irradiations were simulated by Monte Carlo algorithm (see, e.g. [8,9]).
Data transfer rate is up to 20 Gbps per channel.
The single reconstruction corresponds to a separate radiographic data.
For each cross-section, data of 10201 irradiation lines were taken.
The data of irradiations were simulated by Monte Carlo algorithm (see, e.g. [8,9]).
Data transfer rate is up to 20 Gbps per channel.
Online since: January 2016
Authors: Karel Struhala, Zuzana Stránská, Jiří Sedlák
It is one of the largest available databases of environmental data.
Data Sources.
Missing data were verified in literature (as specified in following chapters).
We weren’t able to get consistent data usable in our research from foreign producers of fibre flax.
But if we change cargo trucks for cargo trains (based on global average data) for transport of input materials over more than 100 km, we can achieve a small reduction of environmental impacts – see Table 7, column “Improved Transport”.
Data Sources.
Missing data were verified in literature (as specified in following chapters).
We weren’t able to get consistent data usable in our research from foreign producers of fibre flax.
But if we change cargo trucks for cargo trains (based on global average data) for transport of input materials over more than 100 km, we can achieve a small reduction of environmental impacts – see Table 7, column “Improved Transport”.
Online since: May 2012
Authors: Long Yi Shao, Feng Ding, Zhao Bin Li, Feng Lan Zhang
Based on statistical data, the main sorts are as follows: water-inrush, slag, ground subsidence, landslide collapse, and ground crack et.al.
Based on the sequence forecast theory of grey system GM (1, 1), a forecast model is established for grey data sequence.
GM (1, 1) shows a differential equation involving a function of one variable, which basic thinking is that builds dynamic or static white module based given data sequence according to a kind rule, then depends on some change or solution to calculate grey module in the future; in the grey module, according to a kind rule, find gradually dynamic variation and forecast its future development trend. [1] Building model step as follows: Given original data sequence X(0)={x(0)(1), x(0)(2),…x(0)(t),…x(0)(n)} (1) Meanwhile, X(0)(t) represents the data of time,n≥4 Based on sequence X(0),in order to overcome the defect of original fluidity and randomcity,then generate a new sequence X(1),by accumulation generation operator, build a middle information model.
Table 1 Forecast Accuracy Grade [1] P C Forecasting Accuracy Grade > 0.95 < 0.35 Excellence > 0.80 < 0.50 Eligibility > 0.70 < 0.65 Reluctant eligibility 0.70 ≥ 0.65 Disqualification Application of Grey Model By analysis of these hazards including water-inrush, slag, ground subsidence, landslide collapse, ground crack in XXX mining of Pinglu District, Shanxi Province during last eight years, the output data have been chosen as the original data sequence since 2003, and GM (1, 1) adopted as the grey prediction model[3-6].
Improve mining geohazard prevention and reduction laws, and promote mining geohazard management system.
Based on the sequence forecast theory of grey system GM (1, 1), a forecast model is established for grey data sequence.
GM (1, 1) shows a differential equation involving a function of one variable, which basic thinking is that builds dynamic or static white module based given data sequence according to a kind rule, then depends on some change or solution to calculate grey module in the future; in the grey module, according to a kind rule, find gradually dynamic variation and forecast its future development trend. [1] Building model step as follows: Given original data sequence X(0)={x(0)(1), x(0)(2),…x(0)(t),…x(0)(n)} (1) Meanwhile, X(0)(t) represents the data of time,n≥4 Based on sequence X(0),in order to overcome the defect of original fluidity and randomcity,then generate a new sequence X(1),by accumulation generation operator, build a middle information model.
Table 1 Forecast Accuracy Grade [1] P C Forecasting Accuracy Grade > 0.95 < 0.35 Excellence > 0.80 < 0.50 Eligibility > 0.70 < 0.65 Reluctant eligibility 0.70 ≥ 0.65 Disqualification Application of Grey Model By analysis of these hazards including water-inrush, slag, ground subsidence, landslide collapse, ground crack in XXX mining of Pinglu District, Shanxi Province during last eight years, the output data have been chosen as the original data sequence since 2003, and GM (1, 1) adopted as the grey prediction model[3-6].
Improve mining geohazard prevention and reduction laws, and promote mining geohazard management system.
Online since: August 2011
Authors: Yong Lu Chen, Shu Kai Qin, Ying Hua Yang, Xiao Bo Chen
MacGregor and Kourti [1] established a PCA model from the training data and detected the abnormal behavior of online processes.
Monitoring based PCA-ICA algorithm PCA can handle high dimensional, noisy, and correlated data by projecting the data onto a lower dimensional subspace which contains most of the variance of the original data [4].
After applying PCA on the observed data, the PCs matrix can be expressed as linear combination of unknown independent components, that is,
The training and test data set can be downloaded from http://brahms.scs.uiuc.edu.
E.: Pattern matching in historical data.
Monitoring based PCA-ICA algorithm PCA can handle high dimensional, noisy, and correlated data by projecting the data onto a lower dimensional subspace which contains most of the variance of the original data [4].
After applying PCA on the observed data, the PCs matrix can be expressed as linear combination of unknown independent components, that is,
The training and test data set can be downloaded from http://brahms.scs.uiuc.edu.
E.: Pattern matching in historical data.
Online since: September 2016
Authors: Lu Li, Jia Xin Wu, Ying Wen Li, Dong Sheng Xu, Lai Jun Wang, Rui Zhang, Kai Chen, Li Zhang, Hua Zhang, Tian Ye Niu
In this paper, author have carried on many tests about PI film’ DC breakdown and flashover performance in room temperature and liquid nitrogen temperature, and get some useful test data.
From the table 1 and figure 1, we conclude that the data dispersity of PI film’ breakdown strength was lesser, it testified the insulated performance of PI film was stable.
The data dispersity of PI film’ breakdown strength showed increased trend with the temperature reduction, and PI film’ breakdown strength enhanced obviously, the breakdown strength of PI film which thickness is 0.025mm at 78K enhanced about 23.9% than at 300K.
After the third flashover, the value of flashover tended to stable value, and the data dispersity was very well.
Its breakdown strength in room temperature enhanced by a large margin than in the liquid nitrogen temperature, and the data dispersity of breakdown strength increased obviously in room temperature. 2.
From the table 1 and figure 1, we conclude that the data dispersity of PI film’ breakdown strength was lesser, it testified the insulated performance of PI film was stable.
The data dispersity of PI film’ breakdown strength showed increased trend with the temperature reduction, and PI film’ breakdown strength enhanced obviously, the breakdown strength of PI film which thickness is 0.025mm at 78K enhanced about 23.9% than at 300K.
After the third flashover, the value of flashover tended to stable value, and the data dispersity was very well.
Its breakdown strength in room temperature enhanced by a large margin than in the liquid nitrogen temperature, and the data dispersity of breakdown strength increased obviously in room temperature. 2.
Online since: August 2013
Authors: A.A. Mokhovikov, A.S. Ignatiev, Vladimir E. Ovcharenko
Experimental data on studying structural-phase states developed in the subsurface of TiC/Ni-Cr-Al alloy cermet under condition of superfast heating and cooling produced by pulse electron beam melting have been presented in this paper.
New approach to developing durable metal cutting cermet tools provides for developing extra structural levels in the subsurface of a cermet in the form of submicro- and nano size components, which serve to redistribute elastic stress both due to elastic stress field interaction exerted by structural components of different levels and reduction of plastic strain localization level [3].
It has been shown by the example of TiC-(Ni-Cr) cermet that structural-phase state modification of its binder resulted in multiple reduction of friction coefficient and wear resistance [4].
Also the restructuring of the carbide component to the nanosize level contributes to reduction of friction coefficient to the values minimal for the temperature interval under consideration.
The data in Fig.8b consistently represent the influence of extra structural levels generated in the subsurface of the cermet by electron beam melting on its resistance to diamond tool cutting which is increased for all temperatures with the number of structural levels up to its maximum for nanosize restructuring of the carbide component.
New approach to developing durable metal cutting cermet tools provides for developing extra structural levels in the subsurface of a cermet in the form of submicro- and nano size components, which serve to redistribute elastic stress both due to elastic stress field interaction exerted by structural components of different levels and reduction of plastic strain localization level [3].
It has been shown by the example of TiC-(Ni-Cr) cermet that structural-phase state modification of its binder resulted in multiple reduction of friction coefficient and wear resistance [4].
Also the restructuring of the carbide component to the nanosize level contributes to reduction of friction coefficient to the values minimal for the temperature interval under consideration.
The data in Fig.8b consistently represent the influence of extra structural levels generated in the subsurface of the cermet by electron beam melting on its resistance to diamond tool cutting which is increased for all temperatures with the number of structural levels up to its maximum for nanosize restructuring of the carbide component.
Online since: March 2017
Authors: Rodica Dorina Cadar, Rozalia Melania Boitor
The collected data were studied by means of statistical analysis in order to establish the most relevant aspects of the travel time.
Data collection methods for determining TT are diverse and have evolved over time in a spectacular way.
The collection and processing of data Equipment.
Table 1: Data matrix.
Holdener, Travel Time Data Collection Handbook.
Data collection methods for determining TT are diverse and have evolved over time in a spectacular way.
The collection and processing of data Equipment.
Table 1: Data matrix.
Holdener, Travel Time Data Collection Handbook.
Online since: March 2022
Authors: Laleh Kalankesh, Mohammad Ali Zazouli
The equilibrium adsorption data and the model parameters were evaluated.
The isotherm study indicates that adsorption data fit well with the Langmuir model and Pseudo second-order kinetics.
Comparisons with literature data Table.3 summarizes some relevant literature data that have been applied to various photo-catalyst adsorbent and operating conditions on adsorption of HA from aqueous solutions.
The data clearly indicated that Mercury lamp (100W) and UV-Vis as a light source shows higher photo-degradation efficiency (>90%).
The isotherm study indicates that adsorption data fit well with the Langmuir model and Pseudo second-order kinetics.
The isotherm study indicates that adsorption data fit well with the Langmuir model and Pseudo second-order kinetics.
Comparisons with literature data Table.3 summarizes some relevant literature data that have been applied to various photo-catalyst adsorbent and operating conditions on adsorption of HA from aqueous solutions.
The data clearly indicated that Mercury lamp (100W) and UV-Vis as a light source shows higher photo-degradation efficiency (>90%).
The isotherm study indicates that adsorption data fit well with the Langmuir model and Pseudo second-order kinetics.
Online since: September 2013
Authors: Takehiro Kato, Hajime Tsuji, Kaoru Wakatsuki, Yoshio Ogawa
The data indicates that the fire fighter’s multi-layer fabric controls the heat and moisture transfer within fire fighter clothing and no positive contribution by any types of underwear.
The study for reduction of heat stress is done by many researchers [1-4].
l The slop of the linear regression shall be 0.0195 K·m2/W ± 10% l No individual data measurement shall be outside ± 10% of the value predicted by the linear regression.
l The slop of the linear regression shall be 0.0043 kPa·m2/W ± 10% l No individual data measurement shall be outside ± 10% of the value predicted by the linear regression.
The data indicates that the fire fighter’s multi-layer fabric controls the heat and moisture transfer within fire fighter protective clothing and no positive contribution by any types of underwear.
The study for reduction of heat stress is done by many researchers [1-4].
l The slop of the linear regression shall be 0.0195 K·m2/W ± 10% l No individual data measurement shall be outside ± 10% of the value predicted by the linear regression.
l The slop of the linear regression shall be 0.0043 kPa·m2/W ± 10% l No individual data measurement shall be outside ± 10% of the value predicted by the linear regression.
The data indicates that the fire fighter’s multi-layer fabric controls the heat and moisture transfer within fire fighter protective clothing and no positive contribution by any types of underwear.