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Spalart-Allmaras one-equation turbulent model was used for simulations. 3 Results and discussions 3.1 Validation for baseline model In order to validate the present numerical approach, the computed lift and drag coefficients of the present CFD study at M=1.5 are compared with experimental data as shown in Fig. 3.
It is clear to see that the lift and drag force coefficient of the present CFD results and the experimental data agree well (within 1% and 7.5% respectively) indicating that the numerical methods are accurate enough to capture the main flow characteristics of grid fins.
Numerical Study on Drag Reduction for Grid-Fin Configurations.
Numerical Study on Drag Reduction for Grid-Fin Configurations.
Swept-back Grid Fins for Transonic Drag Reduction.

Study on the Improvement of TFIDF Algorithm in Data Mining Hongfei Sun, Wei Hou School of Economics and Management Northeast Dianli University, Jilin, China sunny_bird@126.com Keywords: Improvement of Algorithm; Improved TFIDF Algorithm; Data Mining Abstract.
In order to remedy the defects of traditional methods in the data mining, improving the data mining effect.
The paper proved that the improved TFIDF algorithm is better than other traditional methods more scientific, more advantages and practical value based on four data mining results are compared and evaluated.
However, it's a very difficult thing that search potential cooperator in the multitude of data who have the similar research contents.
With the rapid development of computer technology and the technology of data mining in recent years, it provides the possibility for researchers to search potential cooperator.

In Copenhagen meeting, china set a clear goal for carbon dioxide emission reduction 40% -45%, which needs reasonable urban energy system planning.
Then calculates the carbon dioxide emission reduction by using renew Energy [7].
The energy consumption is based on the actual data of Tianjin Binhai New Area in 2008.
From above calculating data, by taking appropriate energy-saving measures and reasonable energy planning, the entire district can save standard coal 154742t, which is about 15.1% of the whole basic energy consumption.
to 1250598t. 2) Make full use of renewable energy on the basis of adopt some energy-saving measures, and the carbon dioxide emission reductions can be achieved for the 744070t. 3) As public and residential building is the focus of energy- saving, energy consumption can be significantly reduced after taking energy saving measures to the public and residential building that also have a greater contribution to CO2 emissions reductions.

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%.

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.

Training data can be used.
Data processing in the field of data mining is very large.
Scalability of the data is possible as dimensionality reduction is taken into the account.
Dimensionality reduction with PCA for heterogeneous data sites to some extent reduces the communication of transmission of data across all the global sites.
[4] Hairong Qi,Tsei-Wei Wang,J.Douglas Birdwell, “Global Principal Component Analysis for Dimensionality Reduction in distributed data mining”

The objective of the current study is to perform a Taguchi design experiment to establish the MWCNT/NR vibration isolators which maximize the force reduction in transmissibility of the resultant nanotube-reinforced material.
The corresponding results are summarized in Table 2, together with the average force reduction in transmissibility ( R ) for each sample calculated from equation (2).
The schematic layout of the vibration force transmitted teating -12.79 3 2 1 2 0.435 0.442 0.437 0.004 -7.17 4 2 2 1 0.357 0.368 0.378 0.011 -8.69 Data Analysis.
Applying the ANOM statistical technique to the data yielded the S/N response table and S/N response graph presented in Table 2 and Fig. 4, respectively.
Fig. 4 shows that Factor A2 has the most significant effect in enhancing the reduction in force reduction in transmissibility of the composite material, while the choice of sonication time has relatively little effect.

This study is limited to the activity data and emission factors for each emission category which are necessary for the CO2 calculation.
Activity data relate to the activity that produces an emission into the atmosphere in the average year, based on 2011 data for UTM main campus in Johor Baharu.
The data are collected from relevant offices in UTM for each emission.
Activity data and emission factors are needed for the CO2 calculation, therefore, data from all parts of UTM should be taken to calculate the total carbon footprint for Electricity Purchased, Transportation and Solid Waste.
As far as this study is concerned, the data used in the calculation of carbon emission from solid waste disposal assumed that it did not undergo any other treatment except landfill.

The semi-active vibration reduction system tested was compared to a passive system.
Introduction Smart materials are being used increasingly in vibration reduction systems.
The vibration reduction system designed was compared to a passive system.
Analysing Fig. 3, it can be concluded that the choice of weight ρ significantly affects the vibration reduction properties of the vibration reduction system.
Kowal: Full active vehicle suspension – experimental data, Proceedings, ACTIVE, Canada (2009)

Study on technology of blast furnace energy saving and consumption reduction ShuangPing YANGa , Yanbin CHI, miao WANG, Jie DONG, Congrong ZHANG, Yuan SHE School of Metallurgical Engineering, Xi’an university of Architecture and Technology, Xi’an 710055,China ayang_sping@163.com Keyword: BF; energy saving and consumption reduction; operation system and operation technology; optimization Abstract: By study the development situation of blast furnace smelting in china and the blast furnace operation system and technology, combined with production conditions of JISC BF, based on a large number of the production data, the comparison analysis test on JISC BF operation system and technology was did.
Based on the above efforts, the technical and economical indexes of Chinese iron and steel products have been improved obvious (see Table1), Table 1.The technical economical indexes of Change of iron and steel in 90’s Item 1990’s 2000’s Increament(%) Coke ratio(kg/t) 525 429 -18.29 Injecting Coal ratio(kg/t) 35.43 118 +233 charged ore grade(%) 53.31 56.81 +6.57 From the data in the above tables, the progress having been made in iron making technology in China can be seen from the following aspects
According to the metallurgical condition in JISC and the measured data, the factors which have more influence on coke ratio was determined, then the quantitative relationship between the factor and coke ratio was calculated by partial derivative equation. 2.2 Problem about blast temperature High blast temperature problem consists of two things: improving the capacity of hot stove providing high blast temperature and improving the BF requirements level of high blast temperature, which is really embodied by supplying plentifully and making full use of.