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Online since: July 2014
Authors: Si Yi Jiang
The datum plane adopt Yellow Sea elevation height datum.
Layout net,Electing points,Buried stone Calculating Gaussian side inversely Coordinate calculate azimuth inversely Ranging length on the ellipsoid Develop measurement program Field GPS data acquisition Horizontal distance of ranging side GPS data processing in the industry Side length on the projection plane Calculating construction control net result on construction projection plane Conducting bridge axis lofting by Construction control net result Fig.1 GPS measurement and data processing flow chart Math model of side length conversion.The length that the gauss plane reduction to the ranging side length of reference ellipsoid [3],such as equation 1
The ranging side length that reference ellipsoid reduction to the measured horizontal distance,such as equation 2
GPS data processing and precision statistics.Baseline solution.After completion of field data acquisition, conducting data processing by the baseline solution and net adjustment software that was given by Southern Company.
References [1] Dajie Liu, Yimin Shi, JingJun Guo.Global Positioning System (GPS) and data processing[M].Tongji University Press,1996(In Chinese)
Online since: June 2012
Authors: Lin Wang, Xiao Long Cui, Ying Ying Tan
This DAQ system can realize the real-time data acquisition of temperature, water flow rate and pressure as well as data transmission, processing, and display, in addition to provide users with historic data inquire.
The combination of data logging and data acquisition features maked this instrument a versatile solution for the testing requirements.
Thus, the block diagrams of the DAQ system in our research consisted of DAQ modular, data dynamic display modular, data processing modular and files storage modular.
For this program could only collect data for once, we added a while structure to it, which made it accomplish continuous data acquisition.
The acquired data will be used for further research and investigation.
Online since: January 2010
Authors: Laurent Duchêne, Gaëtan Gilles, Anne Marie Habraken
So it is required that the initial data are as close as possible to the solution.
The reduction factor is usually chosen between 0.9 and 0.99.
It can be observed that, even if the parameter sets are very different from each other, there are good agreements between the numerical results and the experimental data.
Two identifications were performed on the basis of experimental data found in the scientific literature and were compared with other material parameter sets, obtained with a least square optimization technique.
Other experimental data, like the yield stress in equibiaxial tension and in plane strain, or anisotropy coefficients along different orientations, are necessary to definitely do such a choice.
Online since: July 2013
Authors: Yu Lin Zhang, Zhao Ri Ge Tu Bao, Wu Lan Ao, Wen Jing Cui
This paper investigated Au-Pd/ZrO2 alloy catalyst prepared by solution reduction method using NaBH4 as reducing agent and L-lysine as protection agent.
In this study, supported Au-Pd alloy catalyst was synthesized by the reduction of two metal precursors on the support with a reducing agent in the presence of a protective agent to prevent aggregation, which is called solution reduction method.
Diffraction data were collected between 10.0 and 80.0 ° with a resolution of 0.02 ° (2θ) for high angles.
JCPDS data file 37-1484) are assigned to the diffraction for the baddeleyite ZrO2 phase.
TOF is a ratio of moles of converted benzyl alcohol per mole metal per hour (measured at t = 1 h) Conclusion In summary, highly dispersed Au-Pd/ZrO2 was synthesized by solution reduction method, followed by characterization of the catalyst.
Online since: October 2011
Authors: Dong Joo Kim, Jungwoo Kim
It is clear that the present data are in good agreement with the previous results.
For example, the mean drag coefficient for is 0.60 corresponding to about 58% drag reduction.
With the actuator attached to the rear surface of the cylinder, we obtained mean drag reduction successfully.
The reason for drag reduction was shown to be the pressure increase in the rear of the cylinder due to the collision of two wall jets.
Corke, “Plasma actuators for cylinder flow control and noise reduction,” AIAA Journal, vol. 46, Aug. 2008, pp. 1921–1931
Online since: September 2015
Authors: Michal Kraus, Kateřina Kubeková, Darja Kubečková
The measures provided to reduction energy consumption are taken on the basis of the approved revision of the European Parliament and Council Directive 2010/31/EU on energy performance of buildings of 2010.
The Airtightness of Energy Efficient Buildings The most powerful aspect of quality airtight building envelope is reduction of the amount of uncontrolled air leakage through building envelope and the associated reduction of heat loss and reduction overall building energy demands.
The value of n50 expresses airtightness in numbers, and indicates how often the air volume of the building concerned is exchanged per hour at a pressure difference of 50 Pa. [3] Verification of Statistical Dependence The basic data sample includes 150 of passive houses.
It is a secondary data from freely available and relevant resources - Database of Centre passive houses in the Czech Republic [4].
Spearman's rank correlation coefficient uses the rank of values of the monitored variables and it does not assume normality of the data. [3, 5] Values of the Spearman correlation coefficient of the non-parametric correlation range between <-1;1>.
Online since: September 2013
Authors: Wei Bao, Jian Hua Chen, Liang Chen
Namely, these factors are: the legal base, the standard base, the accounting method base, the monitoring system and measuring technique base, the data base and the enterprise capacity.
The accounting method, monitoring and measuring technique, and data bases support the GHG emission quantification at the enterprise level, which directly impact on the key reporting content of the GHG emission quantity.
The proposed system was assessed by AHP [4] with four indexes: “the dependence on the existing policies”, “the cost efficiency”, “the foundations of technology, method, standard and data”, and “the operatability of the reporting entity”.
With calculation formulas and emission factors integrated in the background, the user simply needs to input activity data of an enterprise to obtain its emission result and the final report.
Difficulties mainly lie in, the lack of legislations, standards, and data to support such a system.
Online since: August 2013
Authors: Mauro Sassu, Linda Giresini, Anna de Falco
Numerical analysis demonstrate the reduction of the shear force at the base of the stone columns.
Three type of masonry materials were implemented: clay units, stone bricks and granite columns, whose data are reported in Table 1.
In the first case, the reduction of shear forces at the base of the columns is about 76%, while in the second case, more reasonable in practical applications, the reduction is about 51%: both results are of strong interest for the design of the reinforcements.
Online since: December 2012
Authors: Xing Long Guo, H. B. Ji, H.H. Yin, J. Huang
The antenna size reduction can be as large as 36%, as compared to that of the conventional CP design.
Introduction Recently, there are rapid developments in wireless communications, and in order to satisfy the more data rate, the ISM(Industrial,Scientific,Medical)2.45GHz are selected to communication bands for Bluetooth, Home RF and IEEE802.11b.
So the antenna size reduction can be as large as 36%, as compared to that of the conventional CP design.
The antenna size reduction can be as large as 36%, as compared to that of the conventional CP design.
Online since: January 2012
Authors: Na Liu, Guo Xiang Li, Ting Ting Wang, Yu Ping Hu, Xiao Ri Liu
The dynamics model obtains unit data from the modal reduction results, and the calculation results are the boundary conditions of the stress recovery calculation.
Data of the block unit and crankshaft unit are obtained from modal reduction calculation on them, while before connecting rod unit is simulated by beam element automatically via simulation software, the size and mass of the connecting rod should be inputted.
The boundary conditions used in the dynamics calculation are usually load data.
The measured indicator diagram data are chosen as load boundary conditions for dynamics simulation.
Figure 5 shows the stress development chart of the points that has the least safety coefficient in that 3 dangerous areas, and their data are shown in Table 2.
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