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Online since: August 2013
Authors: Lin Yang, Zhuang De Jiang, Xing Yuan Long, Yu Kun Xu, Shuming Yang
The complex components, large volume, low speed of dynamic response, elastic deformation between the mechanical transmission chain and the backlash make too much reduction of the servo rigidity to meet requirements of the modern upscale CNC machine tools.
Insufficient motor torque can also cause slow response during the starting process and reduction of stability during the operation process [5].
Furthermore, the corresponding data provided by the manufacturer should be considered in the process of calculating the sliding friction torque. 2.2 Load cycle Other than the friction torque, the load cycle also plays a very important role when selecting the appropriate torque motor.
Load cycle contains information about the motion process data of the drive shaft as well as the relevant moment data in processing.
As long as there is no restrictive requirement such as angular acceleration or angular velocity, proper running curve can be described by an accelerated process and a subsequent reduction process (see Fig.3).
Online since: January 2014
Authors: Tao Ding, Xian Li, Ya Dong Ning
Zhang investigated China’s carbon contents of trade and their determinates using data from 1987-2007, and the results revealed that China has become a net carbon exporting country since 2005, meanwhile, U.S. is the largest receiver of the products with embodied carbon emission from China [3].
Ahmad and Wyckoff studied the embodied emission within import products of 24 countries using 1995 data and reported Japan’s embodied emission within import products (QM) rose from 45Mt in 1993to 90.5 Mt in 1997 and it rose from 96.5Mt in 1993 to168.3 Mt in 1997 for U.S.
This analysis estimates the embodied carbon emission within trade based on 1997-2010 non-competitive input-output tables, which are established based on trade data from [6]and input-output tables of China[7].
QE to U.S. accounted for 4.71-8.12% of QP, while the reduction via QM is 0.56-1.00%.
QE to Japan contributed 2.22-4.28% of QP, while the reduction by QM was 1.16-1.66%.
Online since: January 2013
Authors: Rositza Yakimova, Anita Lloyd Spetz, Jens Eriksson, Remigijus Vasiliauskas, Donatella Puglisi
The graphene uniformity can then be evaluated from the distribution of the data points making up this map.
The circled data points correspond to graphene grown on 3C-SiC.
a) and b) are modified from results presented elsewhere [5] in order to add data pertaining to 3C-SiC substrates.
In this case there is no distinguishable difference between cubic and hexagonal substrates, but this may also be due to insufficient amount of data for graphene grown on 3C-SiC.
Circled data points correspond to graphene grown on 3C-SiC.
Online since: January 2009
Authors: Marta Kolasa, Rafał Długosz, Jolanta Pauk
Initial preprocessing facilitates the classification task by reduction the number of data classes either by removing not relevant classes, or by making particular classes more concise in the multidimensional input data space e.g. by noise removal.
All neurons have common inputs, whose number, n, forms a n-dimensional data space.
Such model is suitable for analysis of complex data like for example the biomedical signals.
Example training data files.
Three example data files are shown in Fig. 2.
Online since: January 2012
Authors: Sasan Mohammadi, Mostafa Tavassoli, Abolfazl Rajabi
In this control unit data is classified and the best decision will be made based on the received data.
Data transfer by this model takes place via internet or GSM.
Observing and collecting data 2.
Decision making Observing and collecting data.
Also vehicles’ data is being updated continuously and finally all data is recorded and it is ideal for officials since they can access to full and precise data about owners of vehicles.
Online since: April 2013
Authors: Bin Wu, Sandina Ponte, Chatchai Pinthuprapa
The case of Dow: significant reduction of global energy intensity in the past two decades [2]).
The workbook utilizes a front-end flowchart to specify the steps and tasks involved, and then logically integrate all the relevant entities such as training materials and instructions, data collecting tables, procedures of analysis and calculation, and worksheets to support task execution, project management and documentation.
· Working data/tool sheets that can be populated for data collection and task execution · ALL of ISO50001 requirements in organization, personal, task planning, task execution, and documentation Since it is based on a widely used computing environment, the workbook can be easily implemented and adopted by any manufacturing site within the organization’s global network, regardless of location.
These include training and knowledge acquisition, organizational and operational procedures, project management, data collection and documentation management.
Wu, Promoting Awareness of Industrial Energy Efficiency and Waste Reduction in the University Students Population, Annual Conf. of American Society for Engineering Education, Hawaii, July 2007
Online since: January 2004
Authors: Karin Maier, M. Haaks, I. Müller, C. Zamponi, C. Tramm, T. Staab, P. Herzog
The data show a decrease of the S-parameter with temperature down to about 1K and a slight increase below 800 mK.
The only data available have been obtained by Schultz et. al [1] in 1983 and by Troev et al. [2] in 1993 with well annealed Aluminium.
The data show a decreasing S-parameter with falling temperature down to about 1K, but a slight increase of the S-parameter below 800 mK.
This reduction of 1 % is not an effect of the lattice contraction alone.
The S-parameter with external magnetic fields shows a temperature dependence similar to the data at zero field, but at lower absolute value.
Online since: February 2017
Authors: Young Duk Koo, Dae Hyun Jeong
For the purpose of this study, we extracted literatures using SCOPUS data and the significance of the study was deducted by analyzing the global trend of the research.
Query Number of literature TS=(composite* and CNT and polymer) 2,305 Pre-treatment and basic statistical analysis were conducted on the extracted data, using Knowledge Matrix, which was developed by the Korean Institute of Science and Technology Information (KISTI).
Knowledge Matrix is a program that extracts data from research papers and patent database.
It provides data pre-treatment through reduction and expansion of data, Korean and English noun extraction, and thesaurus and by creating various types of matrix to support network analysis and visualization analysis.
It is analyzed that epoxy resin was being used the most as the polymer material for light-weight composite matrix material, which may be a response to the explosive increase in demand for energy saving and carbon emission reduction through making lighter cars.
Online since: June 2014
Authors: Dan Gao, Chao Yang Fang, Li Ling Miao, Yan Jiang Pan, Jian Xu
Fig.1 The Tourism Highway Network of Mount Jinggang Methods and data Model of accessibility analysis.
Data source.
The actual speed data is obtained by survey.
DEM data of 30m resolution is downloaded from Geospatial Data Cloud in China.
Inter-relation of Slope-Terrain-Speed reduction coefficient Slope(degree) Area threshold (km2) Terrain Speed reduction coefficient High speed Other roads 0-7 2 Flatground (utmost gentle slope) 1 1 7-15 4 Moutain (gentle slope) 0.9 0.75 >15 4 Moutain (steep slope & cliff) 0.8 0.6 Fig.2 Classification of slope and terrain in Mount Jinggang Results analysis As about 70% area of Mount Jinggang are steep slopes or cliffs, which are practical impassable regions.
Online since: July 2013
Authors: Guang You Zhang, Li Wang, Ye Cao
The oxidation-reduction reactions of the three hydrazine compounds on the sensing electrode are as follows: N2H4+4OH- → N2+4H2O+4e CH3NHNH2+4OH- → N2+CH3OH+3H2O+4e (CH3)2NNH2+2OH- → (CH3)2NN+2H2O+2e The current produced by electrochemical reaction in the sensor between the sensing and counter electrode is measured and this is directly proportional to the concentration of hydrazine vapors.
Fig.3 The electrochemical sensor The design of electrochemical sensor The principal of the electrochemical sensor is illustrated in Figure 3.The concentration of hydrazine is converted to electrical signal at μA level after oxidation-reduction reaction in electrochemical cell.
Daily data of the gas concentration can be stored or printed by the main processor.What’s more,the output data of the main processor can be sent out to the higher level conmputer unit in the form of series out which not only can monitor the concentrations of the work places, but can control the work of the instrument through computer networks.
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