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Online since: January 2013
Authors: Na Meng, Xin Li Chen, Bao Qing Dai, Jian Zhong Zhang
The data process is proposed to reduce noise and to simplify data.
The experiments show that the proposed method has many obvious advantages than a single algorithm of data processing, such as all sorts of noise data can be removed respectively, mass data can be streamlined.
Data acquisition is the first step in product reverse remodeling, which laser method is widely used to obtain data.
Therefore, noise data of obtained data can be processed as first step before model reconstruction .
Laser scanning can produce mass high-density point cloud data.
Online since: February 2012
Authors: Fang Jia, Min Tang
Comparison between our experiment and simulation shows that simulation values are in good agreement with experimental data.
Findings from the study are supposed to provide a basis for reduction of the thermal deformation of rod as well as for improvement of the thermal characteristics and precision of high speed press.
Comparison between the simulation values and experiment data shows that the former match well with the latter and the FEA method is feasible and effective for predicting the steady state temperature rise of the connecting rod.
Online since: July 2013
Authors: De Li Liu, Ya Shuang Zhang, Nan Lin
Based on the TM remote sensing data of the Huadian city in 1991 and 2011 and based on the DEM data,using the normalized difference vegetation index (NDVI) change classification method,to Extraction the elevation,slope,slope direction data and the vegetation index data of the study area.Then using the spatial analysis function of GIS software to overlay the two different period NDVI data and analysis the NDVI change of area and spatial.
Using the same method to overlay and analysis the relationship of NDVI data and elevation,slope,slope direction.Research shows that the variation of NDVI in the study area has relationship with the topographic factors change.
Methods Information extraction and classification.Based on the TM remote sensing images about Huadian city district in 1991 and 2011 and dem resolution of 70 m as the main data sources, using TM image computing NDVI value,Eq. 1[2]
The terrain is indirect effects on vegetation distribution,the influence of vegetation light, heat, water and other conditions play a role.The terrain is indirect effects on vegetation distribution ,it is mainly affected by vegetation, light, heat, water conditions and terrain factors .Terrain information is extracted from DEM data,the common terrain factor mainly has the altitude, slope, relief, gully density[3].
NDVI change intensity.In the study of NDVI variation in strength, NDVI change rate of the NDVI area is defined as the area difference and unit area ratio,Eq. 2 (2) In the equation, and are two NDVI at all levels of the area, as evaluation unit area.[4,5] Analysis of multi-source spatial data.For study on the relationship between the work area of vegetation cover,the two classification data of NDVI are analyzed with the application of GIS spatial analysis function[6,7].In order to to effects of topographic factors on NDVI change,the NDVI changes in classification data and elevation, slope, slope direction data were discussed.
Online since: August 2011
Authors: Jie Sheng Liu, Jie Sheng Liu
The untreated specimens showed a porous structure, while the treated ones were covered with a dense layer, which caused the reduction of the water absorption.
Once the application of the silicone agent, the concrete is waterproofing; therefore, the ion movement caused by absorption and permeability was restrained, and the reduction of the chloride diffusion coefficient occurred.
Table 3 contains the data collected from results with different amount of silicone waterproofing agent.
Online since: March 2012
Authors: Min Li Guan
According to the electric power enterprise implementation of ERP financial management, and in the consultation on the basis of relevant experts, the paper constructing the index system are as follows: ERP financial management application effect A Information effectiveness (B2) Financia lmanagement and operation cost (B3) To enhance the efficiency of financial management (B4) The consistency of the data between financial department and other departments (C4) Human resources (B1) Human resource cost lower rate (C1) Financial management to reduce the number of personnel (C2) Employees work to enhance the efficiency of degree (C3) The financial department for information timeliness (C5) Office supplies cost reduction (C6) Coordination among the departments of cost reduction (C7) Financial management work strain capability (C8) Cash flow management efficiency improving (C9) Enterprise budget accuracy improved (C10) Figure 1.Electric power enterprise ERP financial management
Online since: January 2009
Authors: R. Nagarajan, J.M. Goodson
Streaming velocity increases as square of acoustic frequency, and causes a corresponding reduction in the thickness of the momentum-transfer boundary layer adjacent to the surface being cleaned; this exposes submicron-sized particles to fluid flow.
The data are shown in Figure 3.
This is a very positive development in the context of semiconductor wafer cleaning, as it will lead to a reduction in contamination-related defects.
Online since: June 2013
Authors: Olga E. Bogomolova, O.A. Pyshkina, V.G. Sergeyev
CVA curves of pristine DPPD and polymethylmethacrylated DPPD CVA curve of DPPD reveals oxidation wave at +0.43 V, reduction shoulder at +0.34 V and wave at +0.26 V.
Voltammogram of polymethylmethacrylated DPPD reveals more wide and less intensive waves: oxidation at +0.41 V and reduction at +0.32 V.
IR-spectroscopy data revealed formation of N-grafted oligoaniline and absence of its oxidation.
Online since: January 2012
Authors: Si Ying Zhao, Kai Cheng Zhang
Many studies on the methods for the preparation of gold nanoparticles were reported, such as controlled chemical reduction [8, 9], photochemical or radiation-chemical reduction [10-12], sonochemical, or electrochemical method [13-15].
The peak positions are in good agreement with those for gold powder obtained from the International Center of Diffraction Data card (ICDD, formerly JCPDS, 04-0784).
Online since: January 2013
Authors: Yan Qiu Xia, Xiang Yu Ge, Zhao Zhou
An increasing of MoDTC concentration in the lubricant was shown to increase the MoS2 in the wear scar, resulting in further reduction of friction [4].
A good repeatability of the friction coefficient and worn scratches in the whole process of the tests were obtained and the data were recorded.
Fig. 3 Average friction coefficients and width of scratch of the samples with the same concentration MoDTC and four different OBCaS concentrations On the basis of the results mentioned above, the mechanism of friction reduction for MoDTC together with OBCaS is now discussed.
Online since: January 2012
Authors: Yang Yang, Kai Hong Song, Chun Fu Li
Then hot rolling and 10% reduction per pass, 70% overall reduction.
Fig.1 Tensile stress–strain curves Fig.2 Strain–hardening exponents from with different strain rates the Hollomon equation vs. true strain at different strain rates Table 1 Experimental data of TWIP steel with different strain rates strain rate [s-1] ReL [MPa] Rm [MPa] A [%] k [MPa%] 4.1×10-4 312 662 63.5 42037 4.1×10-3 330 623 58 36134 6.1×10-3 332 577 52 30004 In this study, yield strength is defined as the yield stress at 0.2% plastic strain on the experimental stress–strain curve.
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