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Online since: December 2012
Authors: Yong Wei Bao, Wei Wu
The R*-Tree is used to index the spatial data of the network.
Additionally, the new data are different from the historical data, for the new one is given higher weight than that of the old one.
The efficiency of the structure also results from the possible reduction of dimensionality of the trajectory data to be indexed
The efficiency of the structure also results from the possible reduction of dimensionality of the trajectory data to be indexed.
Change tolerant indexing for constantly evolving data.
Online since: February 2025
Authors: Rabani Adamou, Satyanarayana Narra, Janet Appiah Osei, Amos T. Kabo-Bah
A purposive sample of 500 taxi drivers was selected and data analysis was conducted using R statistical package.
Per Driver and Vehicle Licensing Authority (DVLA) data, there are approximately 10,000 registered commercial drivers in the city including those driving taxis, minibuses (trotro) and other commercial vehicles.
Data were collected through interviews using closed-ended questionnaires.
Data analysis was performed in R Studio, where the percentage distribution of the different fuel types used by the taxi drivers was elicited.
A review of techno-economic data for road transportation fuels.
Online since: February 2018
Authors: Di Tang, Hui Bin Wu, Gang Niu, Da Zhang, Na Gong
EBSD data were obtained using an HKL-Channel 5 system.
Fig. 3(a)~(d) show the microstructures of different thickness reduction.
With higher thickness reduction, grains deformation levels increased.
While the reduction reached 80%, martensite lath was broken into blocks.
Origin Pro program was used to fitting the data, aiming at establishing a quantitative model of martensite content and deformation amount and temperature.
Online since: November 2014
Authors: Jin Xiang Wu, Xiang Gou, Lian Sheng Liu, En Yu Wang, Zi Fang Wang, Bing Xia, Jian Li Liu
In this paper, CFD software has been used to simulate the reburning process of South American coal(SAm) so as to study the effect of the reburning on the combustion in the furnace and NOx reduction.
Reburning fuel inlets and burnout air inlets are all set on the furnace forming the reburn zone and burnout zone, and the reburn zone is situated at the height of 1.975m to 2.77m when making the bottom of the furnace as the datum.
In this work, NOx reduction effect is expressed by NOx removal rate j=1-NOCNOR×100%, where NOC is NOx emission of the conventional combustion case and NOR is NOx emission of the SAm reburning case.
Sumeet, Numerical modeling of NOx reduction using pyrolysis products from biomass-based materials, Biomass Bioenerg. 32 (2008) 146-154
Hampartsoumian, Evaluation of the optimal fuel characteristics for efficient NO reduction by coal reburning, Fuel. 76 (1997) 985-993.
Online since: October 2011
Authors: Yi Chun Yang, Hao Tian, Yi Fei Tong, Dong Bo Li
Data processing includes: data sorting order, coordinate conversion, data filtering, data compacting, feature extraction and data cutting
(2) Data fusion and mining.
(2)Data processing includes: coordinate conversion, data compacting, data filtering and feature abstraction.
(3)Data fusion and mining.
By integrated use of data mining and data fusion technology, data discovery, identification and utilization can be carried out to support product decision-making.
Online since: July 2014
Authors: S. Murugappan, S. Suresh Kumar, V. Manikanda Balaji
For extruded aluminium tubes subjected to axial compression, the experimental data is limited and most of the publications are available for circular tubes and hence detailed study is required for square cross-section, and tubes with ribs, hole and cracks, in order to study their effects on crashworthiness parameters.The prime objectives of the present paper are, 1.
At higher velocities same trend was observed and the reduction rate is high.
Significant reduction in peak force due to ribs is observed.
Fig. 7 shows the combined effect of slit and rib on peak force reduction.
Significant reduction in peak force was noted for a specimen with cross ribs compared to bare specimen.
Online since: May 2017
Authors: Takeo Sunaoshi, Masashi Watanabe, Masato Kato
However, measured data were too limited to evaluate properties of (U, Pu)O2-x.
In this study, the data were expanded to a high temperature region, and the reduction curve was analyzed by fitting to diffusion model with the effect of surface reaction.
(5) The measured data were fitted by Eq. (5) using D and k as parameters.
Good agreement can be found between the experimental data and the fitted profile.
These data correspond to the dominant condition of monovacancy diffusion mechanism.
Online since: October 2011
Authors: Dan Dan Jin, Guo Xing Chen, Ji Yan Zhan
Borehole data of CZ1, CZ5, and CZ18 of Suzhou rail transit line NO.3 were selected for research.
The drilling data are shown in Tab. 1; shear wave velocity can be seen in Fig.1.
However, reduction coefficient of each soil layer along depth exhibit a decreasing trend as well as discreteness with the increasing input peak acceleration.
On the same earthquake fortification level, PGA along depth under Suzhou artificial waves appear a data concentration phenomenon and reduction coefficient generally outweigh that under far-field ground motions of great earthquake.
PGA reduces along soil depth, at the range of less than 20m depth, the reduction rate is faster and declines straightly.
Online since: February 2011
Authors: Ming Yi Zhu, Jia Min Zhang, Zhao Xun Lian, Rong Zhu
Combination of scrapped products in key (reduction and a high degree of tolerance deflated) tests were selected in the process parameters within the scope of the assessment.
The reasons that caused the reduction are high melt temperature, high mold temperature, and short cooling time.
From the Table 1 we can see that the main defect is the simultaneous appearance of’ reduction and a high degree of tolerance .
Table 1 Defect analysis of unqualified shell Defect Gas hole Reduction A high degree of tolerance deflated Reduction and a high degree of tolerance deflated Number 116 2 10 72 % 58.0 1.0 5.0 36.0 Repair Welding Scrapped Scrapped Scrapped Measures for controlling processing error of injection molding.
To ensure the accuracy of the data, each process parameters are based on the measurement of adjusted products from 10 to 20 , and then to measure after 24h .
Online since: January 2021
Authors: Chao Duan, Hui Chen, Ye Wan, Xiao Wei Zhang, Lei Pei, Qiang Sun
In this study, four different gas mixture ratios of 4: 1, 3.5: 1, 3: 1 and 2.5: 1 were adopt for experimental analysis, specific experimental data are shown in the table below: Table 1 Data of molar ratio of H2 / SiHC13 4:1 No.
Running time (h) Weight (kg) Electricity consumption (kw·h/kg-si) Conversion rate % Deposition rate (kg/h) 1 130.1 7910.3 58.8 10.23 60.81 2 128.6 7798.0 60.4 9.78 60.63 3 129.8 7826.3 59.2 10.28 60.28 4 130.5 7893.4 57.7 10.16 60.49 5 127.8 7695.2 58.0 10.19 60.12 6 129.4 7870.2 75.2 10.23 60.81 7 129.8 7481.5 60.1 9.73 57.58 8 130.0 7654.5 61.0 10.41 58.86 9 130.3 7387.6 59.7 10.11 56.73 mean 7910.3 61.0 10.12 59.59 Table 2 Data of molar ratio of H2 / SiHC13 3.5:1 No.
Running time (h) Weight (kg) Electricity consumption (kw·h/kg-si) Conversion rate % Deposition rate (kg/h) 1 132.9 8173.3 51.51 11.81 61.51 2 131.9 7904.8 52.55 11.02 59.92 3 130.2 7928.8 52.13 11.11 60.90 4 129.2 7842.3 51.60 11.59 60.71 5 128.9 7803.4 51.22 11.34 60.55 6 130.5 7992.9 52.23 11.86 61.24 7 130.2 7938.4 53.86 11.33 60.96 8 129.5 7854.5 52.54 11.25 60.65 9 128.9 7718.4 53.02 10.98 59.88 mean 7992.9 51.87 11.46 60.7 A large amount of experimental data shows that reducing the mixture ratio can greatly reduce the electricity consumption for reduction, thereby reducing production costs.
At the same time, the amorphous silicon solid particles generated will wash the reduction exhaust gas pipeline.
Influencing Factors of Electronic Grade Polysilicon in Reduction Process [J].
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