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Online since: August 2013
Authors: Aminuddin Saat, Mohsin Mohd Sies, A. Mohd Ibthisham, Amer Nordin Darus, Ahmed G. Dairobi, Hussein A. Mohammed, Mazlan A. Wahid, H. Mohd Faizal, M.Y. Fairus
Measurement System and Devices Typical data captured in PDE analysis are pressure, temperature, force, and acceleration.
All digital data acquired from various transducers such as pressure transducers, thermocouples, load cell and accelerometers are fed through data capturing systems comprises of a software and acquisition card.
Separate computer using the same programming language is used to write, store and read back the data for analysis.
This signal converted to a digital signal that later sent to the connector block that communicated with a data acquisition card.
The study on the suitability of using the accelerometer on PDE thrust measurement has been performed to fulfill the data validation requirement [15, 16].
Online since: January 2012
Authors: Keitaro Horikawa, Keiko Watanabe, Hidetoshi Kobayashi, Kinya Ogawa, Kensuke Nozaki
As mentioned previously, there is a relatively large scatter in the density data of both foams.
The lines were drawn by applying the least-square method to these data.
In these figures, the various curves are experimental data and the marks are the values calculated by these equations.
We have to pay attention that the stress-strain data shown in Fig.5, 6 and 8 are the data of nominal stress and strain.
In the strain from 0.05 to 0.6, their differences from experimental data were less than ± 10 % .
Online since: January 2010
Authors: Jiang Liu, Jian Wang, Tao Tang, Bai Gen Cai
Considering the correlation of the process variables, in the PCA strategy, statistical models are built with historical data set, and the fault detection is taken with the deviation between new set and the models, then the dimension reduction will be realized without reducing valuable information, and the distribution hypothesis either.
The filtering results from the filters in level-1 will be fused ultimately in the main data fusion filter of level-2.
The first step for the PCA based fault detection for train locating is the modeling with historical data.
Modeling is realized with data set mn×X , where m is the number of sampling points, n represents the states.
Sensor data fusion for inertial navigation of trains in GPS-dark areas[C].
Online since: December 2014
Authors: Yu Li, Ze Hong Li, Liang Yuan, Yuan Yuan Shi, Shi Feng Li
Therefore, exploring the evaluation method on energy consumption and carbon emission for public buildings has a great significance to achieve carbon reduction target.
The national building energy consumption data in 2006 [12] which was announced by the Ministry of Construction, indicated that public building in towns was the largest energy consumption per unit area in all types as shown in Economics Table 2.
Because Bottom-up Model has multiple classification and readily available quantitative data, it is widely applied all over the world.
While actually, the publicly available detailed models, input and output data and parameters are lack in China, and family life habit, the use of high and new technology also affect the building energy consumption.
Public building energy consumption and carbon emission estimations have been carried out many mature software and methods, but lacking of publicly available data, parameters, input and output made the high precision difficult.
Online since: January 2013
Authors: Dong Ying Ju, Li Ping Cao
In the benchmark research, calculation accuracy of COSMAP is verified by experimental data of temperature, distortion and residual stresses.
Some data of experimentally measured distortion and residual stress are also over plotted to verify the simulated results and to confirm reliability of the developed code.
The data on the surface agree qualitatively with the measured values by X-ray diffraction method on the surface.
The data of axial stress almost equals to that of tangential stress.
The predicted results by the code agree well with the experimental data.
Online since: December 2012
Authors: Ming Jing Li, Xue Jun Li, Yu Bing Dong
The system is composed of a high-speed data acquisition card, two optical sensors, an encoder, a cylinder pressure sensor, an amplifying circuit and an industrial computer.
Then the signal sampling from the high speed data acquisition card is treated by the industrial computer.
Data Acquisition.
According to characteristics of the high-speed data acquisition card and requirements of the tests, data acquisition software is written by Visual Basic, Fig. 6 shows the flow diagram of the collecting program.
Data Analysis.
Online since: August 2012
Authors: Ying Ying Wang, Peng Yuan, Peng Peng Wang, Shu Jie Wang
The results of simulation were verified by comparing with available experiment data and literatures.
Fig.1 shows the visualization of flow past NACA0012 at Re=5×105 and the comparison [19] of the lift coefficient and drag coefficient is shown in table 1 from which we can see that the present result is consistent with CFL3D and other published results while fig.2 is the comparison of lift coefficient curves and drag coefficient curves at different angles of attack at Re=6.6×105 and we can see that the results is very accordance with the experiment data and other published data.
Fig.3 and fig.4 show the lift coefficient and drag coefficient curves of these hydrofoils at Re=1.0×106and comparisons with experiment data, from which a conclusion can be made that the lift coefficient varies with the camber of the hydrofoil, that is, the camber goes up and the lift (a) Drag coefficient curves (b) Comparison of NACA0011 (c) Comparison of NACA2411 (c) Comparison of NACA4411 Fig.4 Drag coefficient and comparison with experiment data C.
Fig.5 Lift coefficient curves of hydrofoils with different thickness (a) Drag coefficient curves (b) Comparison of NACA4411 (c) Comparison of NACA4417 (d) Comparison of NACA4424 Fig.6Drag coefficient curves and comparison with experiment data D.
The simulation results are accurate with experiment data when angle of attack is under 20° and simulation error increases when the angle of attack gets bigger.
Online since: February 2011
Authors: Shu Yang Yu, Min Xu, Hai Yan Tan, Xiang Li Weng
At the end of 2009 the UN held the Copenhagen Climate Conference ,and reached a non-legally binding agreement in Copenhagen, it maintained the "common but differentiated responsibility" principle of the United Nations Framework Convention on Climate Change and the Kyoto Protocol, arranged developed countries take mandatory emission reduction and developing countries take independent action to reduce emissions, and reached general consensus on the global Long-term objectives, financial ,technical support, transparency and on the focus issues.
[Table 1 Wood Construction Architecture Accounted For The Proportion Of The Total Residence Of Partial Countries and regions] Country Percentage / % Country Percentage / % Country Percentage /% USA 90~94 England 60 Netherlands 6~7 Canada 76~85 UK 20 French 4 North Europe 80~85 Germany 10 Sweden, Gustavsson L, Madlener R, Hoen HF finger that use wood replace the standard concrete, heavy concrete, lightweight concrete block and brick materials, it can reduce emission of CO2 that per m3 792,1013,725 and 922kg respectively, CO2 store in the wood and CO2 replace other materials which reductive emission, the total reduction is about 2t[7].
Based on the above summary of knowledge and its development trends at home and abroad ,on the basis of the carbon emissions when the actual building architecture of China , estimating wood construction architecture from material processing, use to waste treatment process changes in carbon sequestration for the follow-up study the early data reference.
Online since: December 2011
Authors: Qing Bo Yu
Similarly, the steels that have special requirements in Z-direction performance are called Z-direction steels.At present, the reduction of area ψ along the thickness direction is used to evaluate Z-direction performance of steel plate, and the performance indicators of Z-direction steels are established according to the value of ψ.
Table 1 Technical indicators of Z-direction steel Grade Condition Ceq Sulfur content, % Reduction along Z direction,% ≤50mm 50~100mm Q345GJ-Z15 TMCP ≤0.38 ≤0.40 ≤0.010 >15 Q345GJ-Z25 TMCP ≤0.38 ≤0.40 ≤0.007 >25 Q345GJ-Z35 TMCP ≤0.40 ≤0.40 ≤0.005 >35 Earthquake resistant performance To reduce the loss caused by earthquakes, higher requirements have been put forward for the mechanical properties of the steels used in buildings, in which yield-strength ratio (YR=ReL/Rm) is an important indicator.
To understand the main characteristics of the steels for high-rise buildings, the composition, room-temperature properties and high-temperature properties of these steels were tested, and valuable data was obtained[4], as shown in Tables 2 and 3.
Online since: May 2012
Authors: Sen Wen, Li Min Zhao
Table 2 Literature data of sludge stabilization with earthworms in vermicomposting processes The organic wastes or the feed Main results Controls References Solid textile mill sludge spiked with anaerobically digested biogas plant slurry Intial C:N=69.2-129.2 TOC↓ 25-28% C:N=26.1-40.6 TKN increase in 100% TOC↓ 13-22% C:N=43.2-83.4 Garg et al. (2006)[10] Crop residues, farm yard manure, cattle dung Organic C ↓ 21-29% Total N ↑ 91-144% Available P↑ 63-105% Exchangeable K ↑ 45-90% No control Suthar (2007)[7] pH ↓ 67.0-15.0%, Organic C ↓ 46.1-28.4% Total N ↑ 137.7-67.8% Available P↑ 107.9-16.9% The tranditonal monoculture as control Suthar (2008)[8] The sewage sludge mixed with sugarcane trash Organic C↓ 4.8-12.7% Exchangeable K↓ 3.2-15.3% Total N ↑ 5.9-25.1% Available P ↑ 1.2-10.9% Exchangeable Ca ↑ 2.3-10.9% Exchange Mg ↑ 4.5-14.0% - Suthar (2009)[9] Discussion Not only would this application of the earthworms in the waste management reduce the amount of waste that
From a comparison of these two scales: the performance of the sludge reduction and the adaptabilities of earthworm, truer and more precise conclusions may be reached in respect of determination of the key design parameter in the reactor.
Sludge reduction with Tubificidae and impact on performance of the wastewater treatment process
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