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The experiment results show that the proposed FFT processor is suitable for PAPR reduction in OFDM communication systems. 1.
Hence, design of variable-Length the FFT processor is key module of PTS technique for PAPR Reduction in OFDM Systems.
SDF architecture for radix-2/4/8 FFT is shown as Fig.1[3].To multiply -j, design can take advantage of the exchange of the real part situation and imaginary part situation, at the same time change the data symbols.
One mode is that input data directly stored in the FIFO shift register, while not action, until the FIFO shift register is full stored.
Wall: Architectures for Dynamic Data Scaling in 2/4/8K Pipeline FFT Cores.

Boin 1, b 1 Helmholtz-Zentrum Berlin für Materialien und Energie, Hahn-Meitner-Platz 1, D-14109 Berlin, Germany arobert.wimpory@helmholtz-berlin.de, bboin@helmholtz-berlin.de Keywords: instrument control, data acquisition, simulation, dead time reduction, proposal submission, Finite Element Modelling [FEM] Abstract.
All aspects of instrument control, data acquisition, simulation and analysis are expected to merge in the future.
This could be done with the aid of a data format such as NeXus [8] which contains many more layers of information than are normally stored in a typical data file.
This constant availability of position and status data would be essential for simulations and collision avoidance.
The simulation can also be used to correct possible aberrations in real-time, interacting with the data acquisition and data analysis.

Rough set theory Rough set is primarily applied to process and analyze various data of incongruity and inaccuracy to discover intrinsic knowledge and reveal potential rules.
In the grey relational analysis, the data which contain the same features are regarded as series.
(2) We possibly use the existing historical data for analysis.
If there is no existing data, we can by means of questionnaire survey and other methods to collect data
(3) As different data generally have different dimensions,data is required for appropriate transformationin order to make different dimensions compared

The strengthening mechanism of this Cu-Ag composite is described by a equation similar to the Hall–Petch relationship, the fitted results based on which shows good agreement with the experimental data when the layer thickness is lower than 100-200 nm.
It is also revealed that, good agreement is shown between the experimental data and fitted curve based on equation (2), when the layer thickness is lower than 100-200 nm.
However, the experimental data are quite different from the fitted curve when layer thickness is about 1 μm or larger, i.e., when cold reduction is low.
The varaitions between the experimental data and fitted curve is consistent with the microstructure characteristics and the rule of mixtures discussed above.
Good agreement is shown between the experimental data and fitted curve based this equation when the layer thickness is lower than 100-200 nm.

No need of hysteresis comparator keeps the high frequency response and using the low ESR of the capacitor makes the output ripple very small. 1.0 [µs] I O VD I L V FB Vr Vo VD VFB’ Fig.2-8 Circuit of ripple injection method Fig.2-9 Waveforms of ripple injection converter (a) Open-loop transfer function [From the data sheet written by Texas Instruments ] The open-loop transfer function Go(s) without the ripple injection circuit is explained in the next equations.
Fig. 3-14 shows the modified spectrum with EMI reduction.
The spectrum of the conduction noise with EMI reduction is 90 mV which is reduced to 9 % ( -21dB).
The spectrum peak level of the operating frequency is reduced from 2.7V to 0.21V, which is 22dB reduction.
Also the input current noise (conductive noise) is reduced from 1,000 mV to 90 mV (21dB reduction).

Drag is usually an undesirable effect and the reduction of drag is associated with the reduction of pumping power requirement in transporting system.
They also suggested that not all drag reduction surfactant caused by viscoelastic since they found drag reduction as non-viscoelastic drag reducing surfactants.
Experimental procedures The pressure drop data in the pipe for water before the addition of anionic surfactants are initially used in the calculations of the drag reduction in which the drag reduction in the pipes is defined as: 1001(%) Reduction       −= b a ∆P ∆P Where ∆Pb and ∆Pa is the pressure drop before and after the addition of the surfactant solution.
At the highest concentration as 600 ppm, the lowest drag reduction was obtained are 4 % at Re = 78645 and the highest drag reduction was obtained are 8 % at Re from 44940 to 56175.
In 400 ppm, the lowest drag reduction is 3 % and the highest is 4 %.

Energy Consumption and Noise Reduction Research of Fiber and Rubber Powder in Cement Concrete Pavement Jun Yong He 1,a, Li Ning Yao 2,b and Cheng Yu Tian 3,c 1Guangdong College of Industry and Commerce, Guangzhou 510510,China 2Guangzhou Modern Information Engineering College, Guangzhou 510663,China 3 BaJu Hydropower Construction of China, Changshan 410007, China ahjyong2001@163.com, bylining@163.com, ctcydg@163.com Keywords: Energy consumption and noise reduction, Rubber powder, Fiber, Concrete pavement Abstract.
An experimental study was performed on the energy consumption and noise reduction of cement concrete.
Therefore，it played a very important role in energy consumption and noise reduction of cement concrete pavement when fiber and rubber powder were rationally added.
Table 2 Dynamic characteristics of concrete specimens dynamic characteristics A20 A30 C20 C30 CA20 CA30 C0 basic cycle T [ms] 19.8 20.2 19.8 20.5 19.6 19.8 18.8 natural frequencies F [Hz] 51.89 49.93 51.89 47.97 51.89 50.91 52.87 logarithmic attenuation rate LA 8.4 8.0 8.45 8.4 8.5 8.65 8.5 damping ratio DR 0.0265 0.0257 0.0266 0.0274 0.0265 0.0273 0.0254 modulus of flexure [MPa] -- 29.22 38.20 26.24 -- 33.75 48.23 Notes: indefinite data in the experiment are represented with symbol“--” Conclusions At present, the asphalt mixture is used as main material of the pavement construction in the world.But with the asphalt as a kind of diminishing natural resources, the asphalt concrete road construction and maintenance costs will be more and more expensive.So cement concrete pavement will still play a very important role in the future.The traffic noise has become an important problem to be solved in road traffic in the city.

In particular we have found the processing of the ultrasonic signals using wavelet transform extremely useful for noise reduction.
In particular we have found the processing of the ultrasonic signals using wavelet transform extremely useful for noise reduction.
It has been shown that the thresholding of wavelet coefficients has near optimal noise reduction property for many classes of signals.
EVOC EIC-2406 industrial computer and three ultrasonic plate cards, including data acquisition card PR401, 8 bits 100M A / D converter card, integrated timing control and filter card TCF6401, also products of the U.S.
Experimental data obtained from a steel plate with a crack produced by an electrical-discharge-machine have been used to highlight the excellent performance of the proposed method and, thereby validate it.

The thrust force data was recorded using Picoscope™, which was further processed into Matlab after converting them into .txt format.
Prior to the tests, the dynamometer was calibrated using weighs to ensure a linear response between axial forces applied and data shown on PC display.
The thrust-force reduction was calculated to investigate the effectiveness of UAD in relation to CD.
In the view of force reduction caused by UAD, from 260 rpm to 540 rpm, a general trend of increase in force reduction can be observed with an increasing speed; the maximum force reduction was achieved at 1700 rpm.
Comparative thrust force Speed (rpm) Force (N) Average force reduction (%) CD UAD 40 345±6 31± 4 91 5.

Introduction The low density of magnesium is an attractive attribute for applications where weight reduction is important.
The inset shows the same data as in the main chart but with a logarithmic scaling of the consumption axis.
Aluminium and zinc price data from LME [5].
Magnesium price data from Asian Metal [6].
First and foremost are in areas where weight reduction is critical, namely consumer electronics and transportation industries.