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Online since: May 2012
Authors: Wan Li Chao, Chang An Zheng, Bin Huang
The data is shown in Figure 2.
What’s more, the data in fig.2(c) is similar with the fig. 2(b), because the limitation of the permeability coefficient.
The temperature and humility data are recorded when the laboratory temperature is dropped to design temperature.
In this experiment, the data of every sensor is recorded.
According to the experiment results, the data of first three monitoring points is obviously influenced by air temperature.
Online since: January 2011
Authors: Rong Hua Tao, Dan Wan, Jie Chen, Biao Chen
Introduction IDL, short for Interactive Data Language, is a product of Research Systems, Inc.
It is a complete package for the interactive reduction, analysis, and visualization of scientific data and images which was widely applied in many fields.
(1)design colorpalette Limited to remote sensors’ specific property and gaining data’ space-time, there are various flags, such as cloud, island and invalid data are contained in the ocean RS inversion data, it is important to configuration the corresponding properties of IDLgrImage object, as well as color distribution.
ocean RS data decide anomaly data create a object hierarchy reset view volume design colorpalette positioning graphics atoms object graphic display Figure 2.
(3)positioning graphics atoms Data to a representation that can be rendered to a window depends on the conversion between data, device, and normalized coordinates.
Online since: September 2013
Authors: Hua Li, Li Cheng, Meng Chun Zhong, Chun Lin Zhang
According to statistics, recoil mechanism’s failure rate is high, accounting for 30%~40% of a total failure. 1 Analysis of recoil device failure The fault of recoil device one aspect is in the gas, not correct liquid, according to the firing process test of pressure to evaluate its performance; on the other hand, mainly wear, recoil rod piston wear ring in the control, but it is difficult to test data from the traditional direct assessment.
But with the firing of the measured data tend to be a mixture of much noise, not conducive to the signal analysis and processing, so we need to deal with the noise of test signal at first. 2 wavelet de-noising method 2.1 traditional wavelet threshold de-noising method The threshold method with approximate optimum estimation, fast calculation speed and wide adaptability, can get the original signal, is one of the most widely used wavelet de-noising method.
GHM multi wavelet two dimension equation for: 3 The example Adopts the above three kinds of noise reduction method, respectively, for containing gaussian white noise signal noise reduction processing.
Fig.1 Three wavelet de-noising methods contrast figure This article use ULT20 series piezoresistive acceleration sensor connected to the USB5935 data collector, CM3503 signal conditioning device, install the sensor using dope fixed way in reverse recoil device control rod tail, and then through the data acquisition unit for data acquisition and inventory.
Through the improvement, the multi wavelet can be applied in vibration signal de-noising, data compression, and has broad application prospects.
Online since: June 2013
Authors: Yong Chun Cheng, Guo Jin Tan, Yu Ping Shi
Related research data show that the ambient temperature can affect the natural frequencies of the continuous box-girder bridges.
Hoon Sohn presented a linear adaptive model to distinguish the changes of the bridge’s natural frequencies caused by the temperature and other factors, and verified the validity of the method based on the data of AlAMOSA gorge bridge[5].Ni Yi-qing used support vector machine to establish the relation model between modal frequency and the temperature[6,7].
According to the related research results, the change of temperature can change the concrete’s elastic modulus.The reduction factor has something to do with the rate of temperature change, which increases with the rate and causes more obvious reduction effects.
However, the change rate of the daily temperature difference field is generally below 10℃/h, and the general value of reduction factor under the daily temperature is 0.08.
The numerical analysis results show that the sunshine temperature filed exert certain influence on the natural frequencies of the continuous box-girder bridge, however, the influence extent is weaker than the influence of the elasticity modulus reduction.
Online since: March 2007
Authors: Carlos Camurri, I. Bello, M. Trucco, C. Carrasco
For the mechanical characterization (traction test) a 5 Ton Lloyd machine was used, with digital extensometer, both connected with NEXYGEN software for acquisition and treatment of data.
From this data is clear a diminution in the yield stress, from an average value of 279 MPa in standard steel without boron, to an average of 218 MPa in boron steel.
If the ratio between yield stress and tensile strength for both kind of steels is compared, it is possible to observe that for standard steels, the value 1 is reached for accumulated reductions of 80.2 %, while for boron steels this value is obtained for total reductions over 91.5 %.
Additionally, the ductility of boron steels, represented by means of the reduction of area Z, is notably higher than the standard steels from sixth matrix (i.e., reductions over 80 %) place where the facture is most probably that occurred, due to the small diameter of the wire.
That better aptitude are still more reflected in the indicated properties during the cold drawing of wire, particularly for total area reductions over 80 %.
Online since: November 2014
Authors: Bin Xiong, Ying Dong Geng
Practices and experiences of GMS countries based on Big Data Analysis Bin Xiong1,a, YingDong Geng1,b 1Faculty of Management and Economics, Kunming University of Science and Technology, Kunming, China a874572579@qq.com, bgengyingdong@163.com Keywords: Pro-poor Growth, GMS countries, Poverty, Income distribution.
At the same time, the poverty in China is also in a large-scale reduction, especially in rural areas.
Therefore, the income inequality between urban and rural regions showed a small reduction in 2005, and the contribution to overall income inequality also went down.
The pro-poor growth analysis of Laos In 2002, The Lao government formulated the "poverty reduction strategies in transitional period "and the “national economic growth and poverty elimination strategy “in 2004.
Galbraith and Peter Bradford, The Theil Index in Sequences of Nested and Hierarchic Grouping Structures: Implications for the Measurement of Inequality through Time with Data Aggregated at Different Levels of Industrial Classification, UTIP Working Paper, 2000 (5): 22-23 [4] Guimbert, Stephane.
Online since: July 2014
Authors: Guang Ming Huang
It is not in conformity with the principle of energy saving and emission reduction.
First one, select cross section of cable by temperature rise; second one, meet the requirement of voltage reduction.
But the calculating data of all kinds of design manual does not catch up with the changes.
Meanwhile, this section of distribution cable is only at end but not consider the voltage reduction.
Electrical design personnel should consider based on the principle of energy saving and emission reduction and sufficiently have understanding in specific technical data of elevator, but not the bigger the better or perfectly safe, so that the distribution capacity and cross section of cable of elevator can be ensured.
Online since: October 2011
Authors: Dong Mei Mu, Dao Li Huang, Wei Liu, Ji Hao
Based on user behavior analysis, using the information of data warehouse will be a reasonable quantification of qualitative indicators, draw the user a variety of potential semantic behavior, and user clustering and dimension reduction, the establishment of a recommendation based on user behavior analysis model .
Data Mining.
Data Warehousing and Data Mining for Telecommunications[M]ARTECH HOUSE,1997
Principles of Data Mining [M].
Data Preprocessing and Dimension Optimization in Data Mining [J].
Online since: March 2015
Authors: Qiu Ling Tang, Li Li Zheng, Xian Li
Data sensed by the nodes are delivered to the sink through multiple hops.
Except for collecting data directly by visiting each node ergodicly, the mobile sink can move along rendezvous points (s), to which the data is gathered through one hop [2] or multihop [3].
Section III describes the data collect strategy (EEPP) in details.
Mobile sink have to visit these s to collect the data.
Gavalas, “A rendezvous-based approach enabling energy-efficient sensory data collection with mobile sinks
Online since: May 2011
Authors: Gui Zhong Li, Bo Wang, Ze Deng, Meng Geng
P&M Model is briefly described as follows: Levine has used a model which is similar to that of the adsorption equation to describe coal body expansion (Formula1) and has achieved good agreement with experimental data [5]
Therefore, effective porosity in the model is far smaller than total porosity tested in the laboratory. (2) During the process of CBM depletion, it is generally considered that coal matrix has a small compressibility which can be ignored, so is taken as 0 in the model. (3) Data on matrix shrinkage parameters are limited in China.
There is a difference of a magnitude between the experimental data got by Chinese scholars and that got by foreign scholars.
Values are divided into three grades according to experimental parameters and data appeared in domestic and oversea literatures, as shown in Table1.
(2) Permeability variations during CBM depletion process are predicted based on data from exploratory wells in Qinshui Coal-bed Gas Field introducing P&M permeability mathematical model.
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