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Online since: November 2012
Authors: Yu Liang Wu, Xin Xin Zhang, Ze Yi Jiang
The direct reduction in carbon-based pellets has been studied extensively[2].
However, the model research on thermal processes in RHF for direct reduction is still to be further developed[4].
The carbon monoxide is the main product of the direct reduction by carbon due to the gasification of carbon.
The boundary condition is calculated according to design parameter, experimental data and field data.
LU: Mathematical Modeling of the Kinetics of Carbothermic Reduction of Iron Oxides in Ore-Coal Composite Pellets.
Online since: February 2014
Authors: Jin Liang Wang, Jia Chen Liu, Hui Qin Chen
Mean residual stress values of simulation after compression are identical to the XRD testing data.
Fig.5 Mean residual stresses of simulation values and XRD testing data along z-locus Fig.5 shows mean residual stress comparison of simulation values and XRD testing data after compression of Plate B along z-locus.
And the average error of mean residual stresses between experimental data and simulation values is 24.3MPa.
Obviously, it can be seen that mean residual stress values of simulation after compression are identical to the XRD testing data.
Mean residual stress values of simulation after compression are identical to the XRD testing data.
Online since: October 2020
Authors: Dede Zulyansyah, Sungging Pintowantoro, Fakhreza Abdul
The reduction process of laterite nickel ore is affected by the reduction potential or ratio of CO and CO2, with higher CO the higher reduction process takes places [4].
The reduction temperature and reduction time significantly affect the development of Ni and Fe particles.
The data of lateritic nickel ore composition was shown in Table 1.
Comparison of pore size to Ni content of the product Reducing agents Pore size (Angstrom) Ni content in the product (%) Coal 9.4 5.75 Coconut shell charcoal 33 8.54 Green Coke 60-100 15.23 To support pore size data, bulk density testing was performed on all three types of reducing agents.
With the reduction of Fe2O3 to Fe will increase the Fe content in the reduction.
Online since: February 2013
Authors: Feng Lei Ma, Xiao Long Zhou, Yong Tao Zheng
In this paper, we studied voice signal with Gaussian noise reduction.
This paper provided a new analytic method to the voice signal noise reduction and enhanced the accuracy of it.
Currently, we generally use WT for noise reduction of voice signal analysis.
Reflect HHT has the accuracy and validity of the voice signal with Gaussian noise reduction.
And is the first IMF of . 6) Separating from the signal of, we can get: (3) Then, as the step 1) of the original data, get time sequence of the second component of IMF from the step 1) to 6), thus:   (4) When become a monotone function that no longer meet IMF’s component from the decomposition of the EMD will stop.
Online since: August 2013
Authors: Wei Wang, Xue Hong Gan, Shi Mei Liu
It's significantly meaningful to the final completion of the target of CO2 emission reduction in China to study the potential of CO2 emission reduction expected in the next 10 years of China's construction development with the status quo.
Energy-efficiency and material-saving in construction are the two main subjects in CO2 emission reduction in China, which are the main objects of the study for the potential of CO2 emission reduction in China's construction.
Study shows that, by 2020, CO2 emissions in China’s construction will reach 11.008 billions tons, and CO2 reduction in construction contributes 48.07% to the potential target of CO2 reduction.
Regional Differences of Carbon Dioxide Emissions in China and Emission-Reduction Policy Recommendations [J].
Empirical Analysis on Determinants of Carbon Dioxide Emissions Based on the Panel Data of 70 Countries (Regions)[J].Journal of Applied Statistics and Management,2011,30(4):585-593
Online since: November 2011
Authors: Wen Jun Yin, Meng Zhang, Jin Dong, Hai Feng Wang
Advanced data assimilation method is used for the short-term wind power forecasting based on a meso-scale model.
Data assimilation (DA) is an essential component of all NWP systems.
Data Assimilation System.
The observation pre-processing modular (OBSPROC) of WRF-Var is implemented for data sorting, quality control and observational error assignment.
Kuo, “Four-Dimensional Variational Data Assimilation for WRF: Formulation and Preliminary Results.”
Online since: January 2015
Authors: Chun Liu, Dong Xing Wang, Kun Tan
The Method Research on Data Mining of Concept Lattice Liu Chun1, a, WangDong Xing2,b , Tan Kun3,c 1, 2, 3Department of computer science and information technology, Daqing Normal University, Daqing City, Heilongjiang Province, China a asaralc@126.com, b bcnwindy02@163.com, c cdq_tankun@126.com Keywords:Data mining, Concept lattice, Algorithm, Attribute reduction Abstract.Concept lattice in essence describe the links between objects and attributes,demonstratesthe generalization and specialization of concepts.
The corresponding Hasse diagrams realize the visualization of the data.
The last part focuses on the application of concept in data mining.
The concept of data mining Generally speaking, data mining isthe process that extracts potential useful information and knowledge which hidden, not known in advance.They are similarto terminology, such as discovery knowledge from databases, data integration, data analysis, data fusion and decision support, etc.
Raw data can be structured, as data in a relational database can also be semi-structured, such as text, graphics, images, data, or heterogeneous data distributed across network.The methods find knowledge can be mathematics or non-mathematics; interpreted or summed.
Online since: October 2011
Authors: Jing Kai Yang, Yuan Qi Li
This paper summarizes and arranges the data of such experiments on composite walls with openings.
Japanese and North American standards both gave the equation of reduction ratio considering openings based on the test data, but the formula is not accurate and needs further study.
This paper summarizes and arranges the data of such experiments of composite walls with openings.
After that, Fei Liu[7] used amended sheathing area ratio as argument, and defined dependent variable parameters, which were peak strength reduction ratio and elastic stiffness reduction ratio , the expression of which were as follows: (6) (7) Calculating equation of reduction ratio for composite wall with openings At First, the paper summarizes the data of such experiments of composite walls with openings, then collects the minimum reduction ratio of the same sheathing area ratio, and gets Table 1.
Conclusions Based on an overview of existing experimental research on shear behaviors of cold-formed thin-walled steel composite walls with openings, This paper summarizes the experimental data on shear capacity of the composite walls with openings, and further analysis with SPSS (Statistical Product and Service Solutions) software was carried out to make a regression analysis and get an equation of reduction ratio considering the effect of openings on the shear capacity.
Online since: August 2013
Authors: Na Li, Gu Jian Huang, Bing Shuang Xu
With the comparative analysis of CODE(JTG D62-2004) method and measured data, it draws a conclusion that considering the support patterns on pier top negative moment influence on engineering structural analysis is more appropriate.
Then the negative bending moment must be carried on the reduction treatment[1].
The formula for bending moment reduction in the CODE is the Eq.1
Moment value is too large after reduction in accordance with the standard formula.
(in Chinese) [3] Tian Wen-tao,He Xiao-hua.The study of data exchange files between SolidWorks and ANSYS software, Modern Manufacturing Engineering.
Online since: December 2013
Authors: An Peng Deng, Yi Xuan Deng, Yun Hai Chai
Evaluations of Chinese Energy Conservation and Reduction In Emission (ECRE) Policies Yixuan Deng1,a, Anpeng Deng2,b, Yunhai Chai3,c 1School of Management, Wuhan University of Technology, Wuhan, 430070, China 2School of Management, Wuhan University of Technology, Wuhan, 430070, China 3Economics and Management School, Wuhan University, Wuhan, 430070, China a530817925@qq.com, bdenganpeng@126.com, c95345764@qq.com Keywords: Energy Conservation and Emission Reduction; Policy Evaluation; Cost-benefit Analysis Abstract.
Based on this situation, government has introduced a series of energy conservation and emission reduction policies.Therefore, energy saving has aroused widespread concern.
Policy research on the implementation of energy saving has become a hot issue of academia.In this context, evaluation of energy-saving emission reduction policies has important theoretical and practical significance.It can provide theoretical support and decision for the state making energy-saving emission reduction policies.
The benefits include the benefits from energy conservation and the benefits from reduction of emission.
Given the system, we can decide whether the ECRE policy is effective on the basis of summarizing the data about relevant policies, then we can make appropriate and pointed adjustment and refinement.
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