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This method makes full use of the advantage of" let the data speak".
As a method of dealing with imprecise, uncertain and incomplete data, rough set is only based on pure data to delete redundant information, and to compare the roughness of knowledge and importance.
In rough sets, the information table is used to describe the universe in the data set, the decision table is a kind of a decision attribute characteristics of information table.
Attribute reduction.
[4] Z Pawlak.Rough Sets,Theoretical Aspects of Reasoning about Data [M].Kluwer Academic Publishing,1991:9-51

The reliability of the predictions ensues from the determination of the necessary mechanical data by means of the most realistic mechanical tests including billets drawing experiments.
The results agree with both experimental and theoretical data.
The present issues rely on accurate data describing the mechanical behaviour of both constituents and interfaces which were determined in conditions as close as possible to the metalworking’s ones.
As for the case of the drawing force, pass area reduction also governs the triaxiality of stress (see Fig. 5b).
The results agree with experimental data and more precisely with the existence of an optimal die angle for the drawing force at a given pass area reduction, or with the favourable effect of an increase of the pass area reduction on formability.

A comparative data depicting the efficiency of various microbes for reduction of Cr(VI) form chromite mine soil is presented in Table-1.
The reduction rate was relatively low during first 24 hours.
The reduction rate increased with increase in time duration.
The best growth and reduction was taken as pH 7, which facilitated ~90% hexavalent chromium reduction.
About 90% Cr(VI) reduction was observed at 35ºC in comparison with only 80% reduction at 25ºC (Fig. 8).

Due to the absence of literary data on the use of air-incorporating additives (AEA) in earth mortars, the objective of this article is to verify the influence of the incorporation of AEA (0,10, 20, and 40% of the total volume of the mixture) in the mechanical properties (compression strength at 28 days), physical (total water absorption by immersion), thermal, and microstructural (scanning electron microscopy) of the referred mortars.
Under compression loads, the stiffness reduction decreases the risk of eventual cracking, however, the reduction in strength should be controlled to meet normative limits. 1.
From the data obtained, it was also possible to determine the thermal effusivity (Ef) of the mortars.
Thermal effusivity also varied from 0.73 to 0.97, providing reductions of up to 24.34%.
This reduction must be controlled in order to meet the minimum normative standards.

E-mail: jinliguo@hrbust.edu.cn Keywords:Grapheme/platinum; EHD; in-situ reduction; counter electrode Abstract.
Graphene/platinum composite gel was prepared with chloroplatinic acid and graphene oxide (GO) as precursors by in-situ reduction method.
Platinum has high catalytic activity toward I3- reduction and is sufficiently corrosion-resistant to iodine compound present in the electrolyte [5].
The overall Raman peak intensities are diminished after reduction treatment, suggesting loss of carbon during reduction [12].
Fig.3 Raman spectra of GO and RGO Electrical Properties Analysis Fig. 4(a) shows the representative current density-voltage characteristics with the numerical data listed in Table 1.

Since the data in Tuban during the year period of 2011 to 2014 is limited, this research also used the tidal data in Semarang (1985-2014) to predict the sea level rise.
Fig. 1 (a-d) represents the tidal data in Tuban and Semarang in 2011-2014, which shows that tidal data in Tuban has higher values than tidal data in Semarang.
Willis Detection of an observed 135 year ocean temperature change from limited data, Geophys.
Recent subsidence-rate reductions in the mississippi delta and their geological implications.
Reduction In Seismic Ground Shaking With The Use Of Soil-Cement Panels.

The raw data is shown in Table 1.
The real data is shown in Fig. 2.
The statistical analysis results of the original data are shown in Table 3.
The statistical analysis results of the original data are shown in Table 6.
We used the real field data of COREX from Baosteel for verification.

Experimental date and analysis The data may be determined by break samples.
According to test datas, relation picture of stretch rate and reduction of cross section area with temperature was drawn.
The reduction of cross section area may be to 96.4%.
The reduction of cross section area may be raised in 700˚C to 950˚C, reduction of cross section area is rised with deform temperature rise.
The reduction of cross section area is 47.7% in 1300˚C.

Based on the current situations of CO2 emission and its regulations in China’s iron & steel industry, this paper identified the underlying causes of difficulties in CO2 discharge reduction as the lack of effective management system and reduction techniques.
According to reliable data, about 1.5 ton CO2 would be discharged per one ton of industrial metals produced by blast furnace.
However, advanced technology for energy conservation and emission reduction has not been broadly applied.
Promotion and Application of Emission Reduction Technology: Curbing CO2 discharge of the iron & steel industry should place great emphasis on energy conservation and emission reduction technology and equipment updates.
In August 2010, National Development and Reform Commission has chosen five provinces and eight cities as the pilot sites for low-carbon practices in China, which helped establish data management system for greenhouse gas emission in these places.

The main program is consisted of subprogram of data acquisition, data process, excitation signal generation and display unit.
Data process Display Y N Start Fig.4 Block diagram of main program Design of Excitation Signal Program.
Design of Display Program. 12864 LCD has the characteristic of flexible interface mode and simple, easy operation instructions, which we can get accurate and efficient detection data.
For the samples of different concentration,Multiple sample data are recorded from 3 min to 28 min.
Current data were collected between 12 min and 15 min and peak value of current were gained.