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Online since: January 2012
Authors: Yong Guo Wang, Jian Bo Yu, Jian Ping Liu, Mei Fang Liu, Ji Ting Yin
Different from PCA, LPP aims to preserve the local structure of the data set.
In which the local structure of the input data can be preserved.
If we choose the first eigenvectors from , where and often , the new projection is (7) Based on the projected data set , the high-dimensional data space is reduced into low-dimensional data space, but retaining majority local variation information in the projected data set.
The data sampling rate was 20kHz and the data length is 20,480 points.
Niyogi, “Laplacian eigenmaps for dimensionality reduction and data representation,” Neural Computation, vol.15, 1373–1396, 2003.
Online since: May 2014
Authors: Nuria Llorca-Isern, Antoni Roca, Jordi Jorba, Aránzazu Villuendas, Ignacio Mejía, Jordi Lluma, Josep Antonio Benito
Reductions up to 15% in iron, steels, aluminum, copper and so on have been detected.
The parameter E decreases in the first step of deformation to 193 GPa when iron is deformed aroung 20% reduction and then increases with successive cold working to 212 GPa for 60% reduction.
The experimental data was processed according to the ASTM E-111 standard.
This parameter in solubilized, deformed and aged AA 7075 and AA 2024 were slightly lower (<2% reduction) than those of the undeformed specimens.
The comparison made between simulation and experimental data showed that the accuracy of springback prediction improved significantly by 18% when the variation of Young’s modulus was considered.
Online since: January 2012
Authors: Chun Xia Jia, Yi Ping Guo, Shu Long Teng
The generated energy of photovoltaic panels is calculated according to reference [3].In the paper outdoor climate parameters is from compiled data[4] of 193 cities in 20 years by Tsinghua University and the China Meteorological Administration.
From the calculated data in the Table 3, Pattern 1 costs 16.56 million RMB and 14.14 million RMB more than Pattern 2 within 20 years and 25 years respectively.
Analysis of environmental effect Emission reductions Consequences of emission reduction Ton Yuan/ton 10,000 yuan Saving of standard coal consumption 5094 550 280 Reduction of CO2 13346 80 106.8 Reduction of SO2 83.03 1260 10.46 Reduction of NOX 24.45 2000 4.89 Reduction of dust 32.6 550 1.79 social benefit analysis of this project(in 25 years) 403.9 Conclusions The economic and technical analysis of BIPV campus project shows the initial investment of the PV system can't be retrieved during the whole life period, in spite of the operating cost is almost zero.
Zhao: Verification Reference Manual on Emission Reduction of Main Pollutants (China Environmental Science Press,2008).
Online since: November 2012
Authors: Bo Zhou, Chang Zheng Chen, Quan Gu
Singularity value decomposition noise reduction method The singularity value decomposition noise reduction method is a nonlinear filtering method based on SVD theory [2].
Fig.3 shows the fault signal time-domain waveform post SVD noise reduction.
In this method, fault feature is extracted by the SVD noise reduction and EEMD method decompounds a series IMF, and then makes Hilbert transform.
Based on Empirical Mode Decomposition and Engineering Application of SVD noise reduction [J].
Ensemble empirical mode Decomposition: a noise-assisted data analysis method [J].Advances in Adaptive Data Analysis, 2009,1(1): 1-41
Online since: December 2012
Authors: Konrad Staudt, Wolfgang Böhme, Werner Baumgartner
Carbohydrates attached to β-keratins seem to be unusual, and the investigation of their function for friction and abrasion reduction in the sandfish is interesting and may lead to biomimetic innovations.
After treatment with harsher conditions (1 hour sandblasting from a height of 30 cm) all samples were completely dull and scratched and no difference in roughness could be measured (data not shown).
Eumeces schneideri and Scincus scincus show similar carbohydrates, however a higher relative quantity was found in S. scincus (data not shown).
The results presented clearly show that friction is reduced through glycans attached to proteins of S. scinus scales mainly by reduction of adhesive forces.
This may be caused by reduction of adhesive wear (less abrasion through less material interaction, respectively friction).
Online since: July 2014
Authors: Yuan Yuan Zhang, You Zhi Wang, Yan Bo Zhao
So it could provide detailed reference material and data for future maintenance.
According to Table 3 and evaluation standard, can determine the bearing capacity degradation coefficient ξe of hollow slab is 0.108. 3)Determine cross-section reduction coefficient (ξc, ξs) According to the on-site inspection respectively in the cross section reduction index gives the evalu- ation, calculated member section damage evaluation value R, shown in Table 4.
According to the comprehensive evaluation section damage value R, the cross section reduction coefficient is 0.953.
According to the field test situation, in addition to the longitudinal wide cracks found no dew bar phenomenon, therefore, reinforced cross-section reduction factor ξs = 0.95.  
The bearing capacity is checked according to the actual detection of this bridge adopts the calculation of reduction coefficient (Z1), bearing capacity degradation coefficient (ξe), cross section reduction coefficient (ξc, ξs),check computation load for highway I class load, based on full bridge detailed calculation of bearing capacity can get the following conclusion: Some hollow plate (Table 6 and 7) cannot meet the requirements of the calculation load.
Online since: July 2022
Authors: Jan Bohlen, Merle Braatz, Noomane Ben Khalifa
Achieved reduction over set reduction for all DD single pass experiments.
Temperature variations of up to 220 °C for the same reduction ratio do not appear to affect a change in the reduction ratio or the magnitude of the deviation.
Achieved reduction over set reduction for all DD and CDD experiments.
Linear regression of all data for the DD and the CCD experiments results in a slope of approx. 1 for the CCD experiments as expected.
Generally, the higher the reduction ratio, the higher the UTS.
Online since: June 2017
Authors: S.N. Larin, G.A. Nuzgdin, Valeriy Ivanovich Platonov
This paper describes the manufacturing technology for these products, in which the solutions are based on theoretical and experimental studies, which provide: an increase in specific strength; reduction in weight of the product; reduction of labor intensity and increase in material utilization factor.
Metallography of connection zones a, b - aluminum alloys 1571 and AA5056; c - titanium alloy 4Al-3Mo-1V Conclusions New technological processes provide: increase in the specific resistance by 1.5 ... 1.7 times; weight reduction by 1.5 times; labor intensity reduction by 2 ... 3 times; increase in material utilization factor from 0.3 to 0.9.
Comparison of theoretical and experimental data concerning relative thickness at dome and base points as well as relative height of the workpiece indicates their satisfactory correspondence (up to 15 %).
Online since: June 2011
Authors: Jeng Shiung Jan, Po Jui Chen, Yu Han Ho
Gold nanoparticles with size smaller than 8 nm were immobilized in the silica network and the as-prepared Au NP/m-SiO2 tubes exhibit good catalytic activity towards the reduction of p-nitrophenol.
The gold NPs were synthesized by PLT reduction of gold precursor under alkaline solution, followed by biomimetic silicification mediated by PLL to immobilize gold NPs in the silica network.
SEM and TEM characterization show that the well-defined tubular structure was obtained as well and the materials are porous (data not shown).
Reduction of p-nitrophenol by NaBH4 was widely used to measure the catalytic property of the gold [3, 19-21], silver particles [22] or gold/silica composite [23, 24].
According to literature data, this catalyst-mediated reduction can be assumed as a pseudo-first-order reaction [3, 19-24].
Online since: October 2011
Authors: Wei Guo Zhou, Ying Jun Ruan, Qing Rong Liu
Feasibility study on combined heat and power with different distributed generation technologies for various commercial buildings Yingjun Ruan1,a Qingrong Liu 2,b and Weiguo Zhou1,c 1 No.1239, Siping Road, Shanghai, 200092, China 2 No.2103, Pingliang Road, Shanghai, 200090, China asnail2418@sina.com, bliuqingrong@shiep.edu.cn, ctjweiguo@tongji.edu.cn Keywords: Combined heat and power, Distributed generation technologies, Heat-to-Power ratio, Energy saving ratio, CO2 reduction ratio Abstract.
And their primary energy utilization efficiency, energy saving ratio and CO2 reduction ratio have evaluated and compared respectively.
And according to the data available [5], the daily, hourly and monthly percentage can be gained.
Fig.7 CO2 reduction ratios for various buildings Environmental impact is an important factor cannot be neglected in any project and the CO2 emissions are calculated and CO2 reduction ratio is defined as follows: (5) Where, : CO2 reduction ratio of CHP system; : CO2 emissions of the conventional energy supply system, kg; : CO2 emissions of the CHP system, kg; : Unit of CO2 emissions per cube meter natural gas; it equals to 2.37kg/m3; : Unit of CO2 emission for per kWh electricity; it equals to 0.38kg/kWh; : Consumption amount of natural gas in the conventional energy supply system, m3; : Consumption amount of natural gas in the CHP system, m3; : Utility electric power used in the conventional energy supply system, kWh; : Utility electric power used in the CHP system, kWh; According to the equation 5 and energy consumptions of the various buildings, CO2 reduction ratios were calculated and shown in Fig.7.
This shows that hotels had the highest CO2 reduction ratio with 29.7%, followed by apartments with 25.1%, hospitals with 21.7%, educational facilities with 18.2%, offices with 16 % and commercial buildings with only 10%.
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