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But Lu et a1. [2] studies show that latent semantic representation model for the task of the performance of fine-grained information on text mining task is not prominent.
As can be seen from the figure, a document composed by a number of feature items, a feature items can be mapped to one or more of ontology concepts and their property values.
Reduce the dimension using Formula (3) and save the first k non-zero-dimensional vectors as a d×K real-number matrix D0S0. 3.
Text clustering: use the real-number matrix D0S0 to calculate the similarity between texts and cluster them using the improved k-means algorithm.
Recall =Number of Correct ClassificationNumber of Actual Classification Precision=Number of Correct ClassificationTotal Number of Texts TABLE 1 : Clustering results based on domain ontology-latent semantic analysis Domain Recall Ratio And Precision Ratio Recall Ratio Recall Ratio Automobile 86% 89% Finance 81% 79% Tourism 92% 82% Employment 79% 71% Education 84% 78% TABLE 2 : Clustering results based on VSM Domain Recall Ratio And Precision Ratio Recall Ratio Recall Ratio Automobile 80% 78% Finance 77% 75% Tourism 86% 82% Employment 76% 74% Education 85% 72% From the clustering results, it’s evident that the adoption of domain ontology helps improve the clustering.

Since the cooling velocity of gas atomization is fast, there's not enough time for the grain of fine particles to grow up and finally make dendritic particles, internal microstructures are the same as these in the surface (Fig. 5(c)).
Bluntness utilizes the ratio of surface curvature of every point of the contour and the maximum inscribed discs grain contour curvature to accurately compute the sphericity of particles.
The formula is as follows: (2) Where n is the number of agglomeration detected on the particle.
The correspondence of the Outg and the number of particle agglomeration are listed in Table 2.
Table 2 Correspondence of the Outg and the number of particle agglomeration.

Statistics show that, with the gradual improvement of power grid construction, power systems has obtains significantly higher levels of security and stability, which undermines the stability of the power system significantly and decreases the number of accidents.
However, the way of increasing the number of reactive-load compensation equipment could cause the big investment, which is not economic.
The crossover is creating new offspring from two chromosomes, and the crossover manipulation is single point operator in this paper, which is generating a random number to determine the position of each integer encoding exchanged individuals.
Fig.1 IEEE30 nodes system wiring diagram The grain is used to calculate the effect of parity on genetic algorithm, if standard transformer IEEE30 node data base ratio and the number of shunt capacitor bank switching operation of the system are beyond limit, the genetic algorithm optimization is taken.
The genetic algorithm to calculate the parameters is set as follows: population size is 40, the maximum number of iterations is 30, the probability of 0.8 hybridization, mutation probability is 0.001, the range of the node voltage constraints are as: 0.95 ~ 1.0 (5p.u.)0.

This study verified that alpha-gypsum can be trouble free prepared by gypsum dehydration in solution of a number chloride salts, among others CaCl2, MgCl2 or NaCl.
Similarly, as in the X-ray, images taken by electron microscopy showed only massive, automorphic grains of this double sulphate salt. .

In terms of the active demand on data parallel processing by rapid rise magnanimous data storage, this paper has adopted GPU accelerator on active memory system node to improve parallel processing capability of mass data, monitored and analyzed resources of data transmission in the system, processor use ratio, I/O operation and system speed-up ratio etc. during the runtime of application programs and adopted methods of rational task partitioning strategy and thread parallel grain size etc. to optimize system performance.
Task arriving process is to describe the task source and arriving laws, finite set or infinite set of task source number and task totality.
Queuing rule refers to the processing rule when arriving task number is larger than processor number, generally divided into loss type, waiting type and mixing type.
Processing pattern of processor mainly includes the processor number, parallel, serial or mixing mode among processors and random or parallel task processing time etc. 1. 2. 3. 3.1. 3.2. 2.
Classification of task queue model A queue model has task arriving process, processing time distribution, processor number, system capacity, client source number and processing rule, which can be represented as: Formula1 In which X represents for the interval time distribution of new tasks’ successive arriving, Y for the task processing time distribution in processor, Z for processor number, A for system capacity limitation, B for task source number and C for processing rule. 3.

The oxygen transference numbers of SrCe(Y)O3-δ in air vary in the range 0.37-0.80, decreasing when temperature increases.
The scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and picnometry confirmed a high quality of the ceramic materials, in particular low porosity and absence of secondary phase segregation at the grain boundaries (Fig.1).
Hence, in the temperature range 973-1223 K where the faradaic efficiency and oxygen permeability measurements were performed, the proton transference numbers are low, in agreement with literature [3].
Considering these data in combination with the transference numbers (Fig.4D), one can conclude that the permeation through SrCe(Y)O3-δ ceramics is heavily affected by the hole transport processes, both in the membrane bulk and at the surface.
Although the latter is very low, one can estimate its upper level by comparing the p(O2)-independent contribution to the total conductivity and the results of faradaic efficiency measurements, enabling to determine oxygen ion transport numbers without protonic contribution [5].

Specifications of soilcrete columns that are achieved from the jet grouting procedures from the diameter and strength aspect depend on jet grouting parameters such as grout pressure, lifting speed, number and diameter of nozzles and c/w ratio and specifications of local soil.
It is formed by the sediments overflowed from the riverbed and is sorted by waters, its grains are small and even with horizontal bedding and organic matters.
The parameters that should be assigned in single fluid system include grout pressure, number and dimensions of nozzles, W/C rate, rotating speed and lifting speed.
Specifications of soilcrete columns that are achieved from the jet grouting procedures from diameter and strength point depend on jet grouting parameters such as grout pressure, lifting speed, rotating speed, number and diameter of nozzles, cement/water ratio and specifications of local soil.
The air pressure, air flow, water pressure, water flow, number and diameter of nozzles and local soil specification were held constant and then the value of the grout pressure, cement/water ratio, lifting speed and rotating speed, respectively, were changed and the jet grouting parameters are shown in Table 3 and Table 4.

When crystallization temperature is 950℃, a large number of glass phase and spherical crystal with size of 20um coexisted.
Introduction China has the world's first rare earth mineral reserves, a large number of rare earth tailings produced every year.
The predominant crystal phase in prepared glass-ceramics is CaSiO3 and the size of the grains is about 20-50um when crystallization temperature ranges from 950℃ to 1050℃.

This means that the small number of large cracks were initiated and propagated selectively in the TNHT specimen.
The thermal fatigue test variables such as heating rate, cooling time, maximum and minimum temperature, and number of cycles were fully computer controlled.
The austenitizing treatment gave a nominal austenite grain size of about ASTM 10.
This means that the small numbers of large cracks were initiated and propagated selectively.
In the view point of the total crack number, the crack initiation was reduced to the extent of half after SN and TNHT treated specimen.

Simplified Physical Model　 The extruded object between solid particles at the entrance is very poor, in the process of enter the extruder it mixed with grain, it mixed with air in the extruder after entering the extruder will melt in extrusion machine under the action of fluid pressure, thence fluid physical model can be simplified into gas and molten fluid two phase flow model, namely, continuous flow discrete bubbles in the liquid materials [3].
Low Reynolds number method need to have corresponding large number of nodes near wall area and fine grid.
CFX make wall function method and the low Reynolds number method gradually switch between grid, and without accuracy loss.