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Online since: August 2013
Authors: Cai Tian Zhang, Yan Qin Li
The user need not be concerned with where the data stored in, and need not concern the detail of the distribute nodes.
The direct-join query algorithm cannot play the best effect and performance based on the current communication capacity with emerging of the massive data.
The user need not be concerned with where the data stored in, and need not concern the detail of the distribute nodes.
Then the restoration of the data needs to be done for the repetitive genes.
For the semi-join variation calculation, the all the semi-join relationship groups of are selected with the relation of dependence mutually and the relation of reduction and been reduction.
The direct-join query algorithm cannot play the best effect and performance based on the current communication capacity with emerging of the massive data.
The user need not be concerned with where the data stored in, and need not concern the detail of the distribute nodes.
Then the restoration of the data needs to be done for the repetitive genes.
For the semi-join variation calculation, the all the semi-join relationship groups of are selected with the relation of dependence mutually and the relation of reduction and been reduction.
Online since: November 2012
Authors: Qiao Yan Li, Pei Pei Zhao, Guo Dong Xu
Data Collection and Construction Survey
Basic data collection and arrangement, the field investigation of the existing building is the premise and basis of earthquake disaster prediction.
The staff of this project collected the CAD Topographic Map in Scale of 1:500 in urban area of Langfang, which is provided the basis data for the working platform Arcgic of the geographic information system.
At the same time, they collected plenty of architectural and structural completion data of important buildings and typical buildings-about more than 1500 copies-which provides the detailed data for the later stages of the seismic damage prediction of buildings.
On the basis of the collection of data, the project team members did field investigation of all kinds of buildings of Langfang, and filled in each building complete information, including structural style, construction time, story number, building area, construction applications, weak links and present situation evaluation, etc.
Planning standard implementation guideline of urban earthquake reduction and disaster prevention (China building industry press, China 2008).
The staff of this project collected the CAD Topographic Map in Scale of 1:500 in urban area of Langfang, which is provided the basis data for the working platform Arcgic of the geographic information system.
At the same time, they collected plenty of architectural and structural completion data of important buildings and typical buildings-about more than 1500 copies-which provides the detailed data for the later stages of the seismic damage prediction of buildings.
On the basis of the collection of data, the project team members did field investigation of all kinds of buildings of Langfang, and filled in each building complete information, including structural style, construction time, story number, building area, construction applications, weak links and present situation evaluation, etc.
Planning standard implementation guideline of urban earthquake reduction and disaster prevention (China building industry press, China 2008).
Online since: October 2023
Authors: Aida Estevez, Francisco Javier Doblas-Charneco, Carpoforo Vallellano, Domingo Morales-Palma
The optimization aims to minimize the number of passes required to achieve a given reduction while maintaining a safe value of the drawing stress in each step.
Regarding the cross-section reductions, Celano et al. proposed an automatic procedure for the optimal pass schedule design of cold wire drawing operations [2].
This fact implies a decreasing diameter reduction through the operation due to strain-hardening and, consequently, also implies increasing values of the aspect ratio Δ=dLc.
Another disadvantage of the GA in this application is that yields different results with the same input data, and runs of the optimization model with a larger number of passes than the IPA were found even for the aluminium.
The diameter reductions considered are very demanding, and if the strain after the first pass is above n, it seems reasonable that the limiting value is the one associated to the tensile strength.
Regarding the cross-section reductions, Celano et al. proposed an automatic procedure for the optimal pass schedule design of cold wire drawing operations [2].
This fact implies a decreasing diameter reduction through the operation due to strain-hardening and, consequently, also implies increasing values of the aspect ratio Δ=dLc.
Another disadvantage of the GA in this application is that yields different results with the same input data, and runs of the optimization model with a larger number of passes than the IPA were found even for the aluminium.
The diameter reductions considered are very demanding, and if the strain after the first pass is above n, it seems reasonable that the limiting value is the one associated to the tensile strength.
Online since: December 2012
Authors: Chun Xiu Wang, Xin Zhang
The reason why noise generate how to deal with the noise signal , how to collect and test noise and noise reduction processing has become an important content which the current scholars has focused on.
Hardware part is 3560 B/C/D/E (IDAe series) and 3050, 3660 C/D (LANXI series) data acquisition front end.
Measurement process: 20% load acquisition a vibration data, and collecting a noise data; 50% load acquisition a vibration data, and acquisition a noise data; 100% load acquisition a vibration data, and acquisition a noise data.
This provides data and theoretical support for high MW level development of the gear box and the noise reduction of the company in the future.
Hardware part is 3560 B/C/D/E (IDAe series) and 3050, 3660 C/D (LANXI series) data acquisition front end.
Measurement process: 20% load acquisition a vibration data, and collecting a noise data; 50% load acquisition a vibration data, and acquisition a noise data; 100% load acquisition a vibration data, and acquisition a noise data.
This provides data and theoretical support for high MW level development of the gear box and the noise reduction of the company in the future.
Online since: June 2014
Authors: Sen Lin Xiao, Wan Chen Sun, Jia Kun Du, Guo Liang Li, Man Zhi Tan
Moreover, the reduction of main injection fuel quantity results in a decrease reactivity and peak heat release rate in combustion.
In this study, at first a sample diesel engine was simulated and the results were validated by experimental data.
The maximum reduction of peak heat release rate is almost 74.446 J/CAD when the compression ratio is 15.27.
The reduction of MIFQ means increase dilution mixture which lowers the overall concentrations and peak combustion temperature, resulting in a decreased reactivity and peak heat release rate.
In this study, at first a sample diesel engine was simulated and the results were validated by experimental data.
The maximum reduction of peak heat release rate is almost 74.446 J/CAD when the compression ratio is 15.27.
The reduction of MIFQ means increase dilution mixture which lowers the overall concentrations and peak combustion temperature, resulting in a decreased reactivity and peak heat release rate.
Online since: October 2010
Authors: Liang Hsing Chou
However, when aggregate was replaced by crumb rubber, a reduction of compressive strength and splitting tensile strength of concrete was observed.
Using the NaOH pretreatment method, Chou et al. [8] proposed a theoretical analysis to explain the effect of rubber additives on the physical properties of concrete and has shown the reduced adhesion at the interfacial surfaces between cement and rubber grains is an important factor that induces the reduction of the compressive strength of concrete after the addition of rubber.
The elastic moduli calculated with the stress-strain experimental data were also depicted in the table.
In terms of percentage, the reduction was 37.6 %.
Using the NaOH pretreatment method, Chou et al. [8] proposed a theoretical analysis to explain the effect of rubber additives on the physical properties of concrete and has shown the reduced adhesion at the interfacial surfaces between cement and rubber grains is an important factor that induces the reduction of the compressive strength of concrete after the addition of rubber.
The elastic moduli calculated with the stress-strain experimental data were also depicted in the table.
In terms of percentage, the reduction was 37.6 %.
Online since: January 2004
Authors: M. Härting, D.T. Britton, D. Knoesen, C.M. Comrie, E. Minani, Z. Sigcau, T.P. Ntsoane
The
reduction in the low momentum fraction for the sample deposited at the temperature above 300
0C
is associated with the reduction in the average size of the defect allowing more annihilation with
high momentum electrons.
From the S-W map shown in Fig. 2(b) it can be seen that most data points in the map cluster in the same region, indicating that there are no qualitative difference in the defect structure for the high temperature samples but only a relaxation of its size.
On longer illumination period there is a net loss of hydrogen from the annihilation sites leading to a lower penetration into the annihilation site of the low momentum dangling bonds, and a reduction in the S parameter.
From the S-W map shown in Fig. 2(b) it can be seen that most data points in the map cluster in the same region, indicating that there are no qualitative difference in the defect structure for the high temperature samples but only a relaxation of its size.
On longer illumination period there is a net loss of hydrogen from the annihilation sites leading to a lower penetration into the annihilation site of the low momentum dangling bonds, and a reduction in the S parameter.
Online since: January 2014
Authors: Yue Bin Feng, Bin Yang, Yong Nian Dai
The carbothermal reduction process is promising due to the potential to cut cost; however it remains the formidable technical chanllenges.
The AlCl disproportionation process in vacuum is developed from the direct carbothermal process, in which the metallic aluminum product is apart from the byproducts and the unreacted raw materials; furthermore, the required temperatures are lower than for the direct carbothermal reduction process [6-8].
The process comprises two stages: Firstly the carbothermal reduction-chlorination of alumina generates gaseous AlCl and CO at higher temperatures, and then the AlCl gas disproportionates to metallic aluminum and gaseous AlCl3 at lower temperatures.
(1) Based on the data of HSC, the standard Gibbs free energy changes (ΔG0) of reaction (1) at 300K-1900K were calculated and shown in Fig.1.
The AlCl disproportionation process in vacuum is developed from the direct carbothermal process, in which the metallic aluminum product is apart from the byproducts and the unreacted raw materials; furthermore, the required temperatures are lower than for the direct carbothermal reduction process [6-8].
The process comprises two stages: Firstly the carbothermal reduction-chlorination of alumina generates gaseous AlCl and CO at higher temperatures, and then the AlCl gas disproportionates to metallic aluminum and gaseous AlCl3 at lower temperatures.
(1) Based on the data of HSC, the standard Gibbs free energy changes (ΔG0) of reaction (1) at 300K-1900K were calculated and shown in Fig.1.
Online since: September 2014
Authors: Jian Zhang, Bin Bin Yang, Yong Kai Hu, Hao Miao Wang, Lu Song
After running a cycle, select the corresponding output files to collect vehicular and pedestrian delays data, queue length data, travelling time data, which belong to the data collection point sets in the simulation system [2].
These detailed data are shown in Table 3.
And the queue length data are shown in Table 4.
After running a cycle, the outputted data contained: travel time data, queue length data, vehicular delay data, vehicular stop delay and number of stops data.
Arranging the queue length data of the three situations, we drew a comparison chart like Fig.5.
These detailed data are shown in Table 3.
And the queue length data are shown in Table 4.
After running a cycle, the outputted data contained: travel time data, queue length data, vehicular delay data, vehicular stop delay and number of stops data.
Arranging the queue length data of the three situations, we drew a comparison chart like Fig.5.