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Online since: August 2013
Authors: Chao Wei, Dong Mei Liu, Fan Wang, Ling Yan Chen
Measuring signal sampling means sampling the sparse data which is also called the process of dimensional reduction.
(3) Fusion method based on CS Data in the Compressive Sensing domain is not a simple grey scale data.
The data of this sample matrix is 30% of the original and it is the required Compressive Sensing data.
The amount of data is huge.
But if we adopt Compressive Sensing data instead, the amount of data will be 30% of the original and the disposed data will be decreased two-thirds.
Online since: November 2015
Authors: Peter Groche, Daniel Hesse, Julian Sinz, Sebastian Öchsner
The data basis is deduced by an analysis and synthesis of the existing press system data.
As a result the data basis of existing press systems enlarge.
The prediction model uses data of existing press systems as well as the dependencies between the data to predict the press system configuration for the required development task.
After collecting the data, every parameter is opposed to every other parameter.
The cross is designated as machine data point.
Online since: May 2012
Authors: Zhi Yi Ma, Chun Hua Zhang, Yang Yang Li, Jian Tong Song
The maximum torque at 2000 rpm of B100 is almost the same with that of B0, and the maximum power at 3400 rpm has a reduction of 4.5% than that of B0.
To show the data clearly, B0, B10, B20 and B30 are shown in Fig.
Under the whole range of speed, all BSECs of the blends and B100 are lower than that of B0; and with increase of biodiesel ratio, the degree of reduction becomes larger.
It can be seen that HC emission of all fuels is low under the whole speed range, and with increase of engine speed, HC emission of all fuels has some reduction.
Contrasted experiments of external characteristics indicate that, with increase of biodiesel ratio, the maximum torque is almost the same, and the maximum power has a little reduction, BSEC decreases, smoke and HC emission both decrease, but NOx emission and CO emission both increases.
Online since: September 2013
Authors: Sunil Nair, Dominic Savio, Y. M. Srinivas, K.R. Srinivasan
Mechanical properties of grades in solution annealed condition Grade YS(N/mm2) UTS(N/mm2) %E 904L Specification 260 min 530 to 730 35% min Typical values 280 600 50% 2205 Specification 450 min 650 to 880 25% min Typical values 500 760 44% 317LM Specification 240 min 550 min 35% min Typical values 330 630 55% In order to study the effect of hot rolling reduction on mechanical properties, testing was carried out in sizes ranging from 7.0mm – 150.0mm rolled from 250 X 250mm square continuously cast blooms.
The test samples in solution annealed condition prepared as per ASTM A370 do not show any difference with respect to the reduction ratio.
The cold work hardening properties were studied by drawing wire rods in annealed condition and plotting the graph of tensile strength v/s percentage reduction.
This study revealed that the work hardening characteristics up to 30% reduction was similar in both grades 2205 ( Fig. 10) and 904L (Fig. 11) ; however, grade 2205 showed a higher pick up of yield strength in the initial reduction.
Ajinkya Bhasagare, internship trainee from IIT-Madras for his help in the analysis of data and preparation of this manuscript.
Online since: January 2013
Authors: Qing Chang, Xue Kui Hao, Xiao Hong Li
The improved removal Cr(VI) at low pH was due to electrostatic attraction between negative charged Cr2O72 and the protonated CSAX chains and the direct reduction of Cr(VI) to Cr(III) in the solution.
The increased % M6 can be explained by the direct reduction of Cr(VI) to Cr(III) in solution, because chromium (Cr2O72-) became the main species in solution at pH 2.
The equation of reduction is as below: Cr2O72- + 14H+ + 6e- 2 Cr3+ + 7H2O After pH > 2.0 Cr(VI) existed as Cr2O72- and CrO42-coexistence in solution.
The aims are to make CSAX diffuse completely, between Cr2O72- and CSAX chains contact enough, resulting in the oxidation-reduction reaction absolutely.
From experimental phenomena, there were not flocs formed, which was in agreement with the data reported earlier [2].
Online since: March 2016
Authors: Andrzej Jurkiewicz, Kamil Zając, Janusz Kowal
Reduction of rate of change of forces acting on the platform and the effective damping of vibrations contributes to improve the working conditions of the crew which indirectly translates into higher efficiency of firing [2].
The disadvantages of this component are reduction of space in the vehicle and reduction of vehicle resistance against anti-tank mines.
Researches have showed reduction of vertical acceleration amplitude and increase of ride comfort, in relation to the model of 2S1 passive suspension system.
Reduction of body roll makes firing more effective and the possibility of fast change of vehicle velocity makes that vehicle difficult target for artillery.
Kowal, Optimal Control of Slow-Active Vehicle Suspension – Results of Experimental Data, Journal of Low Frequency Noise, Vibration and Active Control 32(1) (2013) 99-116
Online since: August 2017
Authors: Tsai Lung Weng, Ran Huang, Mao Chieh Chi, Hsian Chen, Yih Chang Wang
This test cycle was repeated 5 times to investigate the effect of sulphate attack on the weight loss and compressive strength reduction.
A total of three cylinders were tested for each data.
It can be seen that the weight loss and compressive strength reduction of OPC concrete increased by 2.5% and 20.18%, respectively, which is consistent with the previous study.
However, there have slight decreases in the weight loss and compressive strength reduction for AAFS concrete excluding 100% fly ash-based concrete specimens without slag.
However, no obvious regular trends were observed in the weight loss and compressive strength reduction of AAFS concrete specimens.
Online since: October 2014
Authors: Yvon Cordier, Francois Lecourt, Nicolas Defrance, Magdalena Chmielowska, Marie Lesecq, Virginie Hoel, Etienne Okada, Jean Claude de Jaeger, Stephanie Rennesson, Sébastien Chenot
As regards the high operating frequency, a well-known technique relies on the reduction of the gate length Lg and to improve the 2DEG confinement.
As a result, any decrease of the metallurgic gate length must be in accordance with the reduction of the distance d between the gate and the 2DEG.
For example, for tAl0.29Ga0.71N = 14 nm, the reduction of the cap thickness from 3 nm to 0.5 nm increases the 2DEG density from 7.9x1012 cm-2 to 1.0x1013 cm-2 respectively.
Figure 2 illustrates the Ns simulation compared to the experimental data for which the structures were grown on GaN-on-sapphire template (Fig. 2(a)) and on silicon substrate (Fig. 2(b)).
Finally, the AlGaN barrier thickness reduction down to 10 nm seems more challenging than its replacement with a 5 nm thick AlN barrier, but future investigations require improvement of the electron mobility.
Online since: March 2016
Authors: Sławomir Duda, Arkadiusz Mężyk, Tomasz Machoczek
The application of elements for the active or semi-active vibration reduction managed by suspension control algorithms allows to control their dynamic characteristics.
Powering semi-active components requires power at signal level, while the active vibration reduction elements are supplied by an external high-power source.
In the work, the two-mode control has been made as independent per each suspension column equipped with semi-active vibration reduction elements.
Modes of kinematic inputs Analysis of data and conclusions The selection of the control method of the mechatronic suspension system of the presented vehicle has been driven by simplicity and operation efficiency.
This is why, for the sake of power economy, it is advised to apply combined structures, namely the hybrid vibration reduction systems.
Online since: September 2014
Authors: Elisabeth Massoni, Dorian Depriester
In [1], tube spinnability has been defined as the maximum thickness reduction reached by flowforming before failure.
Results Maximum thickness reduction.
In this table, the last value of each column is the attended wall thickness reduction of the tube, leading to failure of the corresponding specimen.
Table 1: Thickness reduction ratio of each specimen at the different flowforming passes, depending on the initial geometry and the feed-by-revolution.
It has been evidenced that the higher the feed-by-revolution is, the lower damage increases, leading to larger attainable reduction ratio.
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