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Online since: May 2012
Authors: Min Fang Peng, Xian Feng Liu
It realized optimum compression of fault sample data and enhanced classification speed and precision.
MODEL STRUCTRUE BASED ON THE PCA-BP NEURAL NETWORK Principal Component Analysis and the Steps in the Algorithm PCA[5-7] could simplify data structures in the precondition of minimizing loss of original data information, the linear combination for input data had caused big variance in order to have better ability to distinguish fault model.
Fig.2 The simulation calculation of 11x11 grounding grids Sample Data Reduction When analyzing grounding grids by electric network analysis, each conductor of grounding grids could be seen as a resistance.
Lastly ,the 12 lines and 33 columns sample data after normalization were obtained.
According to principle components score vectors (the input vectors of BP neural network) ,we could gain a array of 12x11new sample data,part of the sample data was shown by the Table2: Table2.
Online since: September 2013
Authors: Dong Su Zhang, Jing Xi Li, Hao Yang, Meng Meng Niu
Sensor input line ; 27 signal acquisition device ; 28.data transmission line signal processing means; 29.Signal processing means The high-pressure water generating device is a host of high - pressure water jet , for the target object detection of high-pressure water jet to provide a reliable , stable and water beam .
Water nozzle beam strikes the surface of the target material , to generate sound reflection signal is amplified by the sound sensor is conveyed to the signal acquisition means , and the last input signal processing means via a data transmission line .The test system works when the photo is as follows .
Nozzle 65mm / s speed from about 100mm at the impact of topsoil from the target material . 3)signal processing can be carried out simultaneously , using wavelet noise reduction , then MATLAB software for signal processing .
This article only gives the wavelet noise reduction (pretreatment), modulus maximum algorithm the experimental results.
Experimental results Using the experimental system ,making mines buried in the ground model , stones , bricks experiments , the results obtained are as follows: modulus maxima algorithm using wavelet noise reduction then determine results .
Online since: September 2014
Authors: Andrey V. Ponomarev, E.N. Pashkov, Nikita V. Martyushev
Data on the influence of various factors on balancing accuracy are presented.
(8) Applying equations (2) and (9), let us define the reduction effectiveness of the shaft deflection and the rotor unbalance: , (9) where: is the effectiveness of the reduction of the rotor shaft deflection (amplitude of the rotor vibrations) when the rotor speed is much higher than the critical speed; is the effectiveness of the reduction of the rotor unbalance at the same rotor speed, i.e. the efficiency of automatic balancing.
Online since: December 2014
Authors: Carlos Pina dos Santos, Alexandra Costa
Each of the three cells was instrumented with thermo-hygrometer (Pt100 and capacitive sensor) with automatic data registration, twelve type T (copper-constantan) thermocouples and two heat flux meters.
Data readings were made every minute by an acquisition and automatic registration system (data loggers); average values were recorded every 10 minutes (average of 10 readings).
a) b) Fig. 3 - a) Schematic representation of the instrumentation plan in the roof slab surface; b) Interior cell general aspect - thermal-hygrometer position and data acquisition system Constant indoor temperature in the conditioned regime was achieved by mechanical systems.
The recorded data is currently being analyzed in order to assess the influence of the building envelope in heat pumps performance in real operating conditions.
However, during winter, they lead to an increase in energy requirements to obtain adequate thermal comfort since there is a reduction in roof solar gains.
Online since: March 2025
Authors: Krystian K. Wika, Andrew Wright, Tarsem S. Sihra, John M. Scholey
This paper presents an analysis from small hole DHD with scCO2+MQL in comparison to high pressure (HP) soluble oil coolant to provide viable data for furtherance of the technology.
Hole diameter data for each trial consisted of eight data points (every 10th hole in a total of 80 holes drilled per setting).
PC-DMIS software was used to collate the measured data.
The data indicated that both CLF conditions remained well within a surface roughness tolerance (Ra) of 1.6 µm.
The analysis of hole diameter data from every 10th hole drilled for each feed rate (fn)/spindle speed (n) variation, revealed the following results: Run 1 and 6: (Figure 6) Both cooling methods produced holes within tolerance, with HPC consistently mid-tolerance, and a gradual reduction in scCO2+MQL hole size.
Online since: October 2010
Authors: M. Bobby Kannan, V.S. Raja
The data from this work are presented in Table 1.
In air, the peak aged alloy exhibited 10 % elongation (E) and reduction in area (RA) and 561 MPa ultimate tensile strength (UTS).
SSRT data of 7010 Al-alloys in peak aged and over aged conditions tested in air and in 3.5% NaCl solution at 10 -6/s strain rate [4].
Due to a sharp reduction in recrystallization, the fracture surface of Sc containing alloy revealed predominant ductile features (Fig. 5b).
(a) (b) Table 3 SSRT data of base 7010 Al-alloy and 0.25 wt.% Sc containing alloy in peak aged conditions tested in air and 3.5% NaCl solution at 10 -6/s strain rate [4].
Online since: January 2016
Authors: Mashitah Mohd Yusoff, Gomaa A. M. Ali, Kwok Feng Chong, Salah A. Makhlouf, Osama A. Fouad
The optical band gaps have been calculated from UV–Vis absorption data.
Further information about the chemical structure was obtained from FTIR data presented in Fig. 2(a).
Oxidation and reduction peaks were observed and ascribed to oxidation and reduction of cobalt (II, III) species.
The data shows an almost neglected iR drop.
El–Sayed, Cobalt/silica nanocomposite via thermal calcination–reduction of gel precursors, Mater.
Online since: December 2012
Authors: Ling Zhi Sun, Chun An You, Lin Lin Sun, Jian Xin Liu
(2) Project example of energy-saving residential quarter Initial data of energy-saving residential quarter.
According to specific measuring and analyzing of the owner in energy saving 65% project .we get its use cost data as follows.
Still selects A-8 in the residential quarter as the research object, we suppose it is designed and constructed with no energy saving measure, preparation cost and construction cost is 2320 yuan/m2,heating cost is 3.3 yuan/m2,other data are the same, then the life cycle cost analysis of no energy saving project is shown as follows[5]: construction cost :12056×2320=27970000yuan special maintenance cost: 12056×60 =720000yuan annual property management fee: 12056×1.2×12=170000yuan annual use cost:12056×3.3×5+(880+200+600) ×82+12056×1=35330000yuan disposal expenses: 12056×20 =240000yuan salvage value: 2797×3%=840000yuan Assumptions for 6% discount rate, life period for 30 years, the calculation process of dynamic life cycle cost is:
Table 2 Analysis result of dynamic life cycle cost discount rate i=6% i=10% life duration 30 40 50 30 40 50 energy saving LCCPV 3515 3612 3644 3254 3270 3278 no energy saving LCCPV 3533 3642 3682 3348 3368 3377 reduction 0.5% 0.8% 1% 2.8% 2.9% 3% energy saving LCCAV 255 240 231 345 334 331 no energy saving LCCAV 256 242 234 355 344 341 reduction 0.4% 0.8% 1.3% 2.8% 2.9% 3% Table 3 Analysis result of static life cycle cost life duration 30 40 50 energy saving LCCPV 4186 4606 5026 no energy saving LCCPV 4369 4889 5409 reduction 4.2% 5.8% 7.1% We can know that from table 2 and table 3, although the initial investment of energy saving building increases, the whole life cycle cost is obviously lower than general building.
Summary Energy conservation and emitting reduction is one of the most important jobs of construction industry at present.
Online since: August 2014
Authors: Yan Ling Guo, Yu Dong Bao
Blomidon trees are proposed as object of study, of which measurement data is obtained, referring to the data measured by the research group.
Belt driving 3.Clutch 4.Reduction gears 5.Guard board 6.Picking head 7.Device of collection boards 8.Collection groove Body of the picking machine is designed into the shape of door, which "ride" fruit trees and of which wheels in the ditches on both sides when it is walking vertically.
As the gasoline engine is started, the clutch is closed and at the same time the reduction gears are driven through belt driving.
Piching head is driven by the reduction gears through belt driving.
As the research of blueberry picking machine is limited, there is a lot of research work, such as the experiment of different varieties, the experiment in different gardens, the improvement of structure, time of field trials and the effects of the test environment and mechanical flexibility and operation technology on experiment data. 1 Foundation Project: supported by “the Fundamental Research Funds for the Central Universities”(2572014AB04) and Project 948 of State Forestry Bureau (2011-4-21) Author: Bao Yudong (1986-), male, Fushun, Liaoning Province, PhD graduate, majoring in research of picking machine and robot of agriculture and forestry, and mechatronics technology.
Online since: October 2006
Authors: Takeshi Yoshikawa, Kazuhiro Mochizuki, Kenzi Suzuki, Yoshiki Kawamoto, Daisuke Hirabayashi
Temperature programmed reduction (H2-TPR) was carried out in a thermogravimetric analyzer (Shimazu, TGA-50).
The diffraction data of calcium ferrite solution (mostly Ca2Fe2O5) prepared from the mixture of CaO and Fe2O3 at Ca/Fe=1.00 were shown in Fig. 2 (left).
H2-temperture programmed reduction.
This may probably due to the reduction of residual Fe2O3 in the calcium ferrite solution.
According to Raman spectroscopic datum of the sample at Ca/Fe=1.00; (b), an intense absorption at 1093cm -1 is observed.
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