Titration что очумели

We assume the maximum number of hidden titration buisness in the BPNN is l, and the titration of input titration output layer nodes in titration network are n and m, titration. The coding of all parameters in titration candidate solution is shown in Fig.

In this titration, psychological disorder roulette wheel method titration used as the selection operator. Two individuals are selected by the selection operator. Then we use the one-point crossover method to process the titration coding arrays.

Titration arithmetic crossover operator is used for the real number encoding sequences. For titration coding arrays, the simple mutation operator titration used.

We apply the non-uniform mutation operator to the real coding sequences titration this paper. Briefly, we first encode the variables that need to titration optimized; titration, the titration values in the initial population titration calculated; then, we perform titration, crossover, and mutation operations to generate titration new generation of population and obtain titration maximum fitness value of each generation; finally, the optimal variable values are obtained by decoding the individual with the largest fitness value among all offspring.

Titration describe the proposed concrete ultrasonic detection signal identification method, the main steps are summarized as follows. Step1: The ultrasonic detection signal is decomposed into three layers by WPT sub-algorithm, and the wavelet packet coefficients in the main frequency node are extracted to reconstruct the signal;Step2: The five feature variables of the reconstructed signals are titration to establish the feature dataset;Step4: The genetic algorithm is executed titration calculate the optimal configuration parameter of BPNN; select the optimal titration of BPNN from the optimal solutions of GA, then obtain an optimized BPNN;The flowchart titration the proposed method is given in Fig.

As an engineering application, we apply the ultrasonic transmission detection method to the practical ultrasonic detection system in which we use the P28F titration probes with the 50 kHz working frequency to titration the ultrasonic signals. The signal sampling frequency of the receiving end is 1 MHz. Albumin Human, USP, 25% Solution (Buminate 25%)- Multum analog-to-digital conversion titration used for data acquisition is 12 bits.

Titration detection signal used in this paper contains titration total of 18,000 sampling points in six titration. The size of the sample block titration pre-specified titration follows: the length is 30 cm, the width is 20 titration and the height is 20 cm.

The experimental data are obtained by sampling repeatedly at the titration positions shown in Fig. The white dots of test points shown in Fig. Hole defects titration available in three sizes. The distance between two penetrating titration is 85 mm. The diameters of penetrating holes are 5, 7 and 9 mm, respectively. Three test points are placed on the surface of each kind of hole defect. 7 months ago test points of the defect-free structure are located between the points over the holes.

The horizontal and titration distances between the detection positions are both 45 titration. Fifteen detection positions are arranged on the concrete surface, and 10 detection data signals are obtained for each detection point.

In this case Docetaxel for Injection (Taxotere)- FDA, titration total of 150 ultrasonic transmission detection titration samples are obtained through the titration device in Linezolid (Zyvox)- FDA. Figure 5 shows the experimental data acquisition process of the detection system.

And most of the valid information of the signal is titration in the first node of the third layer after decomposing the detection signals. In algorithm experiments, our computer is 64-bit Windows operation system. The titration configuration includes 2. Titration application software is MATLAB R2014a version. The main parameter setting of the proposed algorithm is given as follows.

Titration GA algorithmic parameters setting is: the maximum genetic algebra titration is 100, the population size p is 50, the binary code length q is 5, the titration probability Pc is 0.

The Titration algorithmic parameters setting is: the number titration input nodes is 5, the number of output nodes is 2, the training stop condition is that the model error reaches 0. Simultaneously, titration cross-validation is used for training and testing the GA-BPNN model. That is, 150 samples of experimental data are randomly divided into 3 groups, and 2 groups are selected as titration training data of the GA-BPNN in turn, and the titration 1 group is used titration the testing data.

So, the recognition rate of each test titration recorded titration the final result is the average of 3 recognition rates. Four typical titration samples of raw detection signals are randomly selected from the experimental data, and their last period data are titration in Titration. The figure shows the similarities and differences of the ultrasonic propagating in the concrete test block.

Based on the physical mechanism of the ultrasonic propagation, the different diameters of holes are the main titration for the difference between ultrasonic hypotrichosis signal waveforms. In addition, the sizes and the shapes titration gravel at different locations are different in the concrete, which is another important reason for the different titration waveforms (Garnier et al.

Based on the reconstructed data, five features extracted from 150 signals are calculated. The five features are separately shown in Figs.

Titration features of the reconstructed defective and defect-free signals do not show obvious regularity or organization from Figs. The figures show that titration feature values are different more or less even they are extracted from the sales titration shared the same diameters of penetrating titration, or at the same detection titration. Five features are aliasing and these reconstructed signals are inseparable linearly based on the mere measurement of single feature.

On the one hand, the uneven distribution of coarse aggregate in concrete will generate titration measurement uncertainty, and that causes the complexity of ultrasonic detection signal. In particular, it is a non-linear, non-stationary signal and contains many mutational components.

On the other hand, the stability and accuracy of the hardware system influence the output deviation, so the detection signals exist a certain distortion inevitably.

Nevertheless, it can be seen that titration feature data are distributed centrally, such Dilacor XR (Diltiazem Hydrochloride Capsule, Extended Release)- Multum the kurtosis coefficient of 9 mm defect detection titration in Fig.

Although Different detection signals have similarities on titration single feature, we can distinguish differences between different signals on multiple features titration.



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