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The user need not be concerned with where the data stored in, and need not concern the detail of the distribute nodes.
The direct-join query algorithm cannot play the best effect and performance based on the current communication capacity with emerging of the massive data.
The user need not be concerned with where the data stored in, and need not concern the detail of the distribute nodes.
Then the restoration of the data needs to be done for the repetitive genes.
For the semi-join variation calculation, the all the semi-join relationship groups of are selected with the relation of dependence mutually and the relation of reduction and been reduction.

Data Collection and Construction Survey Basic data collection and arrangement, the field investigation of the existing building is the premise and basis of earthquake disaster prediction.
The staff of this project collected the CAD Topographic Map in Scale of 1:500 in urban area of Langfang, which is provided the basis data for the working platform Arcgic of the geographic information system.
At the same time, they collected plenty of architectural and structural completion data of important buildings and typical buildings-about more than 1500 copies-which provides the detailed data for the later stages of the seismic damage prediction of buildings.
On the basis of the collection of data, the project team members did field investigation of all kinds of buildings of Langfang, and filled in each building complete information, including structural style, construction time, story number, building area, construction applications, weak links and present situation evaluation, etc.
Planning standard implementation guideline of urban earthquake reduction and disaster prevention (China building industry press, China 2008).

It has been shown that a drastic reduction of the J-integral maximum value was obtained by this repairing process.
Table 2 Materials data for computation.
Analysis of Results The reductions of the opening of the lip and of maximum J-integral value are given in Tables 3 and 4, with respect to the no-sleeve condition.
Table 3 Maximum opening of the crack lip percentage of reduction with respect to the no-sleeve case.
Table 4 Maximum values of J-integral reduction with respect to the no-sleeve case.

Compared with the denoising in time domain, the calculation in frequency domain is relatively small, but the denoising effect is not very ideal [1].The noise reduction effect of wavelet threshold denoising method is better than other classical denoising methods.
Of course, if the selected threshold function is different, the noise reduction effect will be different [2].
Although the wavelet coefficients estimate value has good continuity and noise reduction effect is relatively smooth after disposing with soft threshold method.
Simulation experiment and results analysis In order to illustrate the noise reduction effect of the improved threshold denoising function is better than the traditional denoising effect of hard threshold function and soft threshold function.
The original speech signal obtained in experiments as "Shanxi sheng, Xi'an shi" (in Chinese), the tape recorder collection software that comes with windows, the sampling frequency is 8KHz, data length of 16 bits, the sampling points to 112000, sampling for single channel, audio file is preserved in wav format.

Reduction in strength at higher aging temperature was due to coarsening of precipitates and loss of precipitate coherency with the matrix.
Reduction in tensile properties of weld metal compared to base material at their respective heat treatment condition was observed.
The reduction in hardness with increase in PWHT temperature is due to same reasons mentioned above in tensile properties.
· The reduction in tensile properties and hardness with increase in PWHT temperature was due to coarsening of precipitates, loss of coherency with the matrix and formation of reverted austenite at higher aging temperature. 5.
[3] AK steel. 2000. 17-4 PH Stainless Steel Product Data Bulletin, AK Steel Corporation, Middleton.

Table 1 total emission of pollutants discharged from Hejiagou river kg / d Item Discharge value Item Discharge value COD 172602 NH3-N 14205 As can be seen from Table1, the COD emission from Hejiagou river is 172 tons each day, the ammonia nitrogen emission is 14 tons, and other pollutants' emissions cannot be ignored, these pollutants are the monitoring data that represent the pollutants entering Songhua River mouth, therefore it can be seen that Hejiagou river emissions seriously increase the Songhua River water purification capacity, which results in a large number of pollutants cannot be degraded and contaminates Songhua River, so it is quite urgent to govern the project construction of Hejiagou river.
The reduction situations of pollutants Cottage sewage treatment plant plans to receive all the sewage outfall effluent from Hejiagou cottage sections (ie. east brook), which makes COD reach60mg / L after proper treatment, and the effluent is discharged into Hejiagou river.
In the cottage sewage treatment plant, the daily reduction amount of COD is 43.5 tons, the reduction capacity of NH4-N is 4.5 tons, and the reduction amount of TP is 0.6 tons.

It is known that with decreasing particle size of aggregate the increasing amount of water is needed for the wetting of surface, which ultimately leads to the reduction in resulting strength [3].
The monitoring of the heat development is particularly important because high temperature gradients in massive concrete blocks can lead to the development of cracks and therefore to the reduction of mechanical properties and durability of concrete.
The data were collected using an isoperibolic calorimeter constructed at the Faculty of Chemistry, Brno University of Technology (Brno, Czech Republic) [5] and the resulting value of heat was obtained by numerical integration and multiplying by the integration constant of calorimeter which was obtained from the calibration.
The reason for the reduction of developed heat is the effect of ‘‘dilution’’.
It requires much higher amount of water to wet the surface which results in the reduction of compressive strength.

According to the detailed survey data in site, the coefficient of permeability(K) is 23.84 m/d for the foundation, while the drawdown is 11.79 meters.
The shear strength reduction method is reasonable for stability analysis of the slope.
Fig. 8 Slide plane by the shear strength reduction method The Levee Design Specifications (GB 50286 - 98) rules that the concessional coefficient of stability against sliding is 1.30 for the one-level levee.
The coefficients of stability against sliding meet the requirements ruled by the Levee Design Specifications (GB 50286-98), which are calculated by the shear strength reduction method.
Slope stability analysis by strength reduction[J].

We propose the following mechanisms in order to explain the observed experimental data: (1) The increase of mFE with LCh for the [110]-and [-110]-direction up to 20 mm and 7 mm, respectively, (see items (a) and (b) above) is caused by the drain/source contact resistance RC.
When electrons cross this barrier, they will be scattered leading to a reduction of the mobility.
The Hall effect measurement conducted on Hall bars (3C-SiC substrate, wafer #3 with = 9mm) with Lrod = 5 mm is a further prove for the reduction of the mobility caused by the scattering process at Si-SFs (see Fig. 6). mH in [-110]-direction is smaller by a factor 2 compared to the [110]-direction over the complete investigated temperature range, which is also a strong hint that the scatter centers trapped at Si-SFs are electrically neutral.
This enhancement is attributed to the reduction of the conductivity effective mass when electrons move in [-110]-direction.
For LCh > or Lrod > , a strong reduction of the mobility in [-110]-direction is observed.

Introduction 4D trajectory simulating radar track algorithm includes "4D trajectory simulation", "coordinate transformation ","simulation of standard radar data frame ", " communication link quality simulation " and several other aspects.
Accordingly, in this article for each of these elements is assigned the corresponding data resources, in accordance with the properties of the above can be divided into four categories: spatial data, track data, weather data, aircraft performance data; however in accordance with their mutual relations it can be divided into static data, baseline forecast data and baseline forecast verification data.
Build model of these data, 4D trajectory prediction model is composed of three models: the weather model, control intention model and virtual flight model control (VFMC).
Comprehensively analyze, the error may exists in the following aspects: intent error, aircraft performance model, the original data error. [8] 1 An intent error: Mostly unpredictable flight intention of flight pilots and controllers deploy the aircraft’s altitude and speed adjustment to avoid the flight conflict; 2 Aircraft performance model : set a value of the aircraft performance indicators when build a modeling, but the actual flight change along with the outside world conditions real-time, such as the turning angle of inclination is given a fixed value, idle thrust changes with airport barometric pressure, different elevation are changing when the aircraft is descending ; 3 The original data error: mainly refers to incomplete, inaccurate or outdated flight plan, airspace structure data.
C.; Gonda, John; Mead, Rob; Saccone, Greg The 4D Trajectory Data Link (4DTRAD) Service - Closing the loop for air traffic control Source: Proceedings of the 2009 Integrated Communications, Navigation and Surveillance Conference, ICNS 2009 [9] Zillies, J.L.