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Online since: February 2003
Authors: Evgeny E. Glickman
Construction of the crack velocity vs. stress intensity diagrams for pre-cracked specimens is the most useful representation of the experimental LME data.
Fig. 1 shows that the most of the crack velocity data falls in very wide range 10-1 ≥ V∞ ≥ 10-6 m/s; with such a high V∞, a subcritical LME crack will penetrate 50mm thick reactor wall for less than 2 hours.
In what follows, we outline this GALOP (= Grooving Accelerated by Local Plasticity) mechanism of LME and apply it to the analysis of V(K) data and GB segregation and surface energy effects in LME.
Squares: the crack velocity V∞ calculated from the GALOP model as V∞ =const ⋅[tg (θ/2)]-3 with the data in Table 3 (see details in the text).
Eq. 3, Eq. 9 and Eq. 11 predict the decrease in V∞ due to segregation at GB and increase in V∞ due to γSL reduction.
Online since: December 2013
Authors: You Ling Li, Hua Wang
The measuring data of the enterprise becomes crucial importance.
All kinds of raw materials metering data of the measurement of enterprise become crucial importance.
The weighing information is print by paper printer print to ensure the uniqueness of the data and overcome the error of artificial.
The back-end concentrates in the center of the hall of measurement data.
According to the way of data transmission, weighing processing unit, scheduling prediction unit, data maintenance unit and B/S query unit respectively connected to the server unit.
Online since: May 2010
Authors: Li Juan Zhou, Zhang Zhang
We have developed a new data structure, which we refer to as PrefixList.
Essentially, this data structure stores all item sequences using two lists.
In: Proc the 20th International Conference on Very Large Data Bases.
Data mining:An overview from a database per-spective.
"Top 10 algorithms in data mining", Knowl Inf Syst (2008) 14:1-37
Online since: September 2013
Authors: Zheng Yi Jiang, Da Zhi Zhang
The above data show that the stainless steel industry has been developed rapidly in recent years in China, but the development is still backward compared with advanced countries.
The actual production results indicate that the developed converter is with high precision, the content of Cr2O3 in the slag after reduction is reduced, the recovery rate of the chromium is improved significantly.
This study can provide the data and lay the foundation for the further research [6, 7].
The desiliconization accuracy can reach 0.05%, the content of Cr2O3 in the slag after reduction can be less than 2%, better than the technical requirements of 3%, and improve the recovery rate of the chromium greatly.
Ø In the case of no direct references, the elementary research work in the paper can provide the data and experience for the desiliconization converter design and application, and lay the foundation for the further research.
Online since: August 2013
Authors: Ya Wei Zhao, Ru Gao, Chun Yan Liu, Jing Zhang
Three-dimensional modeling of the image acquisition system based on binocular computer vision scanning system scene with MCU processing the two-dimensional image data collected by the CCD sensor, and complete the image binarization processing using hardware, to improve the efficiency of the image processing; using timing delay analysis circuit the edge of the identification image characteristics, the data amount of the compression of the image processing; will be collected by the CCD sensor the two-dimensional image data transmission to a computer, thereby effectively shortening the transmission time of the data.
(4) hardware and software design of image acquisition MCU system:use of the on-site processing mode, image acquisition and control SCM system analyzes the image feature points, the pre-processing of the data, thereby improving the speed of modeling of the system
(5) software design of image data transfer: the data using the USB interface protocol transported to the computer for subsequent processing in the transmission process, the design of specialized software to simplify the transfer content, further improve the speed of the system modeling
(6) software design of computer-based 3D image generation and processing: the data for analysis, combination, it is determined to create the three-dimensional model, to generate a three-dimensional image.
The three-dimensional modeling system software divided according to their function, can be broadly divided into five parts: the initialization part of the system, the image acquisition part of the system calibration part, image processing part of the point cloud data processing section.
Online since: June 2015
Authors: Jonas Alexandre, Gustavo de Castro Xavier, Afonso Rangel Garcez de Azevedo, Fernando Saboya Albuquerque, Sergio Neves Monteiro, Carla Bozzi Piazzarollo, Paulo Cezar de Almeida Maia
The results of the Tukey Test, before and after the degradation, showed statistical differences, ensuring that the data analysis was effective.
Using exactly 5% (0.05) for the MLS test, it was considered that the cumulative frequency function was distributed in classes and the data behaved as a normal distribution.
The standard deviation and the lot average are calculated by Equations (c) and (d), respectively: (c) (d) After calculating the minimum initial lot number, the minimum lot size (MLS) is calculated using Equation (e): (e) Where N is the number of batch data.
Based on this, the number of pieces utilized of five (5) was considered satisfactory.Then, to analyze the data outside of the central tendency, the Chauvenet Criterion was used.
Longnecker: An introduction to statistical methods and data analysis. (6th Edition. 2008)
Online since: October 2014
Authors: Xiai Chen, Shuang Ke, Lu Han, Zhi Long Zhou, Qing Hua Zhang
Fig. 1.The composition diagram of THz-TDS host computer function module (1)The main function of data reading module includes: the host computer reads data from SR810 latch through the GPIB-USB-HS interface card, and the communication format of the data is GPIB
The dimensions of the variables is reduced and the data is packed by using this method.
Using maximum variance principle, principal component analysis stands for the structure of the data on the whole, that is to say, data is reconstituted by a small number of new variables without losing the original basic data information.
Realization procedures of principal component analysis are as follows: (1)Standardize dealing with to the data
(for example ,reduce three-dimensional data into two-dimensional data).By using this dimensionality reduction method ,it is easier for the data observation and data analysis, in the meanwhile ,the lost of the information is not big.
Online since: February 2012
Authors: Wei Wei Li, Hua Wang, Lei Yu
The theory of grey system modeling theory In the experimental data processing, grey system theory cannot be compared with the traditional advantages of the statistical theory:In the case of less test data, follow-up data through the model prediction, the calculation results can reflect the inherent law of system.
Using the grey theory GM ( 1, 1) model,3 to 6 months in obtaining experimental data, we can predict subsequent test data.
Because the smaller the C, that the greater the S1, show original data variance, large dispersion of the raw data; S2, show that residual variance is small, small residual dispersion degree.
Take 3 ~ 6 sample for based data, generating original series x(0)={640,750,890,970},as a model series with its other test data to predict.
Grey system GM (l,1) Model the original data column of the first simple proof of the validity of the data.Hechi Teachers College(Volume 14, Issue 3), 1994(9):31-32 [2] Julong deng, Grey prediction and decision.
Online since: January 2012
Authors: Yi Ding, Xian Fu
The research of Self-Organizing Maps based on Document Collections Yi Dinga ,Xian Fub The college of computer science and technology Hubei Normal University,Huangshi,China ateacher.dingyi@yahoo.com.cn, bteacher.fu@yahoo.com.cn Keywords: Data mining; Document Collections; SOM; WEBSOM Abstract.
Each map unit can represent certain kinds of data, and in the present paper the units represent genes expressed in similar ways in a chosen set of treatments.
The input data is represented in an ordered fashion on the map: map units close-by on the grid represent more similar expression profiles and units farther away represent progressively more different profiles.
Reduction of the dimensionality of the word category histograms by random mapping.
Schader (Eds.), Classification, Data Analysis and Data Highways, Springer, Berlin(2008), pp. 245-252
Online since: April 2010
Authors: Pey Shey Wu, Chia Yu Hsieh, Shen Ta Tsai
Each data point is calculated from 2500 instantaneous hot wire data.
Data Reduction and Measurement Uncertainties The transient liquid crystal technique was used in this study to acquire and reduce heat transfer data.
In the calculation of the uncertainties for Nusselt number, the data reduction computer program was used to compute the sensitivity coefficients of each temperature variable and time.
Fig. 3 - Jet velocity profiles at Re = 12400 r (mm) -40 -30 -20 -10 0 10 20 30 40 u (m/s) 0 5 10 15 20 25 H/dj = 2 H/dj = 6 H/dj = 10Results and Discussions The validity of the experimental setup and the data reduction procedure is checked against the experimental data of Bizzak and Chyu [8] for impingement on a bare flat plate.
The present data has higher stagnation Nusselt numbers (�us).
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