Study on Mixing Characteristics of Ventilated Central Tornado Flow in Stirring Tank

2013 ◽  
Vol 821-822 ◽  
pp. 1381-1385
Author(s):  
Tian Zhai ◽  
Hui Di Hao ◽  
Jian Yong Lei
Keyword(s):  
Flow Simulation ◽  
Fluid Simulation ◽  
Practical Significance ◽  
Mixing Characteristics ◽  
Single Pipe ◽  
Better Than

The research of the flow simulation in the inner stirring tank with the single pipe and dual pipe was studied by CFD, which has demonstrated the fluid simulation effect of the single pipe and dual pipe. It has found that the effect is better in the single pipe stirring tank than the dual pipe one. Basing on this result, the flow simulation effect of dual pipe is better than the single one, and the result has a certain practical significance effect on industry.

Application of Cascade-Correlation Algorithm in Vibration Characteristics of Hydro Turbine

2010 ◽  
Vol 108-111 ◽  
pp. 1070-1074
Author(s):  
Li Ying Wang ◽  
Wei Guo Zhao ◽  
Jian Min Hou
Keyword(s):  
Bp Neural Network ◽  
Learning Algorithm ◽  
Optimal Operation ◽  
Vibration Characteristics ◽  
Bp Algorithm ◽  
Practical Significance ◽  
Hydro Turbine ◽  
Correlation Algorithm ◽  
Cascade Correlation ◽  
Better Than

The cascade correlation algorithm that is CC algorithms, CC network structure and CC network weights learning algorithm are introduced, based on the operation data of Wanjiazhai hydropower station, considering the pressure fluctuation, the network model of vibration characteristics is established based on CC algorithm, and the applications of CC and BP algorithm in vibration characteristics of turbine are compared. The results show that the CC algorithm is better than BP neural network, the results can be used in the optimal operation of hydropower, and it has a practical significance.

Multivariate information fusion for identifying antifungal peptides with Hilbert-Schmidt Independence Criterion

2021 ◽  
Vol 16 ◽  
Author(s):  
Haohao Zhou ◽  
Hao Wang ◽  
Yijie Ding ◽  
Jijun Tang
Keyword(s):  
Fungal Infections ◽  
Practical Significance ◽  
Gaussian Kernel ◽  
Support Vector ◽  
Sequence Information ◽  
Kernel Support Vector Machine ◽  
Svm Model ◽  
Antifungal Peptides ◽  
Independence Criterion ◽  
Better Than

Background: Antifungal peptides (AFP) have been found to be effective against many fungal infections. Objective: However, it is difficult to identify AFP. Therefore, it is great practical significance to identify AFP via machine learning methods (with sequence information). Method: In this study, a Multi-Kernel Support Vector Machine (MKSVM) with Hilbert-Schmidt Independence Criterion (HSIC) is proposed. Proteins are encoded with five types of features (188-bit, AAC, ASDC, CKSAAP, DPC), and then construct kernels using Gaussian kernel function. HSIC are used to combine kernels and multi-kernel SVM model is built. Results: Our model performed well on three AFPs datasets and the performance is better than or comparable to other state-of-art predictive models. Conclusion: Our method will be a useful tool for identifying antifungal peptides.

scholarly journals Peak Discharge and Hydrograph Assessments Induced by Heavy Rainfall Events Using Tank Model

2018 ◽  
Vol 207 ◽  
pp. 02001
Author(s):  
Yen-Kun Hsu ◽  
Szu-Hsien Peng ◽  
Chiao-Wen Tsai
Keyword(s):  
Debris Flow ◽  
Flow Simulation ◽  
Rain Gauge ◽  
Peak Discharge ◽  
Soil Horizon ◽  
Tank Model ◽  
Rainfall Events ◽  
The Mean ◽  
Heavy Rainfall Events ◽  
Better Than

Tank Model is a kind of simulation of rainfall movement in soil horizon. With the runoff and piping rate, the peak discharge could be effectively calculated. Having 17 rain gauge stations in 13 debris flow events during 1996-2010 as the studied cases, the peak discharge at 12 control points along Chenyulan River is simulated. Furthermore, the data in Neimaopu discharge station is established parameters of Tank Model to estimate the peak discharge in Shenmu Village. By comparing with the parameters of Shueili Station and Japanese Granite, the mean error of the parameter in this study is 51.0%, which is better than those of Japanese Granite 189% and Shueili discharge stations 251%. The parameter in this study appears the highest in allowance analysis, showing that it is more suitable for simulating the peak discharge than the other two. In spite that the percentage of the three parameters is still low, Shenmu Village could be ignored as it locates in the sub-basin of Chenyulan River with few factors. The parameters of Tank Model are applied to transform average rainfall into hydrograph so as to solve the problem of no discharge records when analysing the areas with various debris flow simulation programs.

Machine invention of quantum computing circuits by means of genetic programming

2008 ◽  
Vol 22 (3) ◽  
pp. 275-283 ◽  
Author(s):  
Lee Spector ◽  
Jon Klein
Keyword(s):  
Quantum Computing ◽  
Genetic Programming ◽  
Quantum Computer ◽  
Quantum Circuit ◽  
Quantum Circuits ◽  
Practical Significance ◽  
Programming System ◽  
Computer Simulator ◽  
Classical Quantum ◽  
Better Than

AbstractWe demonstrate the use of genetic programming in the automatic invention of quantum computing circuits that solve problems of potential theoretical and practical significance. We outline a developmental genetic programming scheme for such applications; in this scheme the evolved programs, when executed, build quantum circuits and the resulting quantum circuits are then tested for “fitness” using a quantum computer simulator. Using the PushGP genetic programming system and the QGAME quantum computer simulator we demonstrate the invention of a new, better than classical quantum circuit for the two-oracle AND/OR problem.

scholarly journals Motivated numeracy and enlightened self-government

2017 ◽  
Vol 1 (1) ◽  
pp. 54-86 ◽  
Author(s):  
DAN M. KAHAN ◽  
ELLEN PETERS ◽  
ERICA CANTRELL DAWSON ◽  
PAUL SLOVIC
Keyword(s):  
Scientific Evidence ◽  
Quantitative Information ◽  
Difficult Problem ◽  
Gun Control ◽  
Practical Significance ◽  
Causal Inferences ◽  
The Public ◽  
The Face ◽  
Better Than ◽  
New Skin

AbstractWhy does public conflict over societal risks persist in the face of compelling and widely accessible scientific evidence? We conducted an experiment to probe two alternative answers: the ‘science comprehension thesis’ (SCT), which identifies defects in the public's knowledge and reasoning capacities as the source of such controversies; and the ‘identity-protective cognition thesis’ (ICT), which treats cultural conflict asdisablingthe faculties that members of the public use to make sense of decision-relevant science. In our experiment, we presented subjects with a difficult problem that turned on their ability to draw valid causal inferences from empirical data. As expected, subjects highest in numeracy – a measure of the ability and disposition to make use of quantitative information – did substantially better than less numerate ones when the data were presented as results from a study of a new skin rash treatment. Also as expected, subjects’ responses became politically polarized – and even less accurate – when the same data were presented as results from the study of a gun control ban. But contrary to the prediction of SCT, such polarization did not abate among subjects highest in numeracy; instead, itincreased. This outcome supported ICT, which predicted that more numerate subjects would use their quantitative-reasoning capacity selectively to conform their interpretation of the data to the result most consistent with their political outlooks. We discuss the theoretical and practical significance of these findings.

scholarly journals Research on Premium Income Prediction Based on LSTM Neural Network

2019 ◽  
Vol 6 (11) ◽  
pp. 256-260
Author(s):  
Li Diao ◽  
Ning Wang
Keyword(s):  
Neural Network ◽  
Bp Neural Network ◽  
Short Term Memory ◽  
Practical Significance ◽  
Monthly Data ◽  
Loss Compensation ◽  
Long Short Term Memory ◽  
Premium Income ◽  
Social Management ◽  
Better Than

As one of the four financial pillars, insurance has the functions of risk diversification, loss compensation, financing and social management. It is of great practical significance to predict the level of premium income in the new normal of economy. In this paper, long short-term memory (LSTM) neural network was innovatively applied to the study of premium income prediction. The monthly data of China's premium income from January 1999 to October 2019 was selected for prediction, and the prediction results were compared with BP neural network. The results show that LSTM model can accurately predict premium income, and its performance is better than BP neural network.

scholarly journals Reasonable Layout of High Drainage Roadways for Jiaojiazhai Mine

2022 ◽  
Author(s):  
Dongjie Hu ◽  
Zongxiang Li
Keyword(s):  
Control Program ◽  
Simulation Software ◽  
Fluid Simulation ◽  
Gas Extraction ◽  
Tracer Gas ◽  
Element Analysis ◽  
Gas Concentration ◽  
Working Face ◽  
Deformation Law ◽  
Better Than

Abstract To ensure that the gas concentration at the top corner does not exceed the limit, a reasonable level of the high drainage roadway layout in Jiaojiazhai Mine should be determined. In this work, based on the actual conditions of the working face, an SF6 tracer gas was used to test the connectivity between the high drainage roadway and the working face. A discrete element analysis program was used to simulate the deformation law of the overlying strata in the goaf, and a corresponding caving control program for the surrounding rock was written based on the obtained parameters and “O” ring theory. A fluid simulation software was used to simulate and analyze five goaf models with different high drainage roadway layouts (10, 15, 20, 25, and 30 m). The gas drainage data for two layers (10 m and 20 m) of the high drainage roadway were measured. The results showed that the height of the caving zone in the goaf is approximately 20 m, and when the high drainage roadway is arranged along the roof (when the layout layer height is 10 m), the roadway will be directly connected to the working face, thus pumping fresh air to the working face. The gas extraction effect of the 20 m stratum was better than those of the other strata. The simulation results of the gas extraction were consistent with the measured data. The proposed scheme was practically applied, and its effect was found to be evident, thus solving the problem of high gas concentration at the top corner and increasing the mine output.

Contextualism

2020 ◽  
pp. 108-127
Author(s):  
Alastair Norcross
Keyword(s):  
Moral Theory ◽  
Moral Discourse ◽  
Practical Significance ◽  
Contextualist Approach ◽  
Better Than ◽  
Context Of Utterance

Although consequentialism is not fundamentally concerned with such staples of moral theory as rightness, duty, obligation, goodness of actions, and harm, such notions may nonetheless be of practical significance. A contextualist approach to all these notions makes room for them in ordinary moral discourse, but also illustrates why there is no room for them at the level of fundamental moral theory. Roughly, to say that an act is right is to say that it is at least as good as the appropriate alternative, to say an act is good is to say that it is better than the appropriate alternative, to say an act harms someone is to say that it makes them worse off than they would have been on the appropriate alternative. In each case, “appropriate” is an indexical, whose referent is fixed by the context of utterance. This approach also makes room for an account of supererogation.

Analytical Investigation on the Current Quality of Safety Belts

2014 ◽  
Vol 526 ◽  
pp. 362-366 ◽  
Author(s):  
Jian Xiao Cao ◽  
Ye Cao ◽  
Jian Hua Fu ◽  
Jing Pei
Keyword(s):  
Analytical Investigation ◽  
Practical Significance ◽  
Test Results ◽  
Safety Belt ◽  
Spot Check ◽  
Standard Value ◽  
Testing Center ◽  
Safety Belts ◽  
Better Than

On the basis of two test results of safety belt from national spot check. This paper analyzes safety belt products in domestic market and data bases from each testing center. Searching and studying the existing problem with safety belt products. The results showed the quality of safety belt in market is good expecting two batches. And the test data is better than the standard value. This research has important practical significance on analysis of safety belt quality.

Experimental investigation on mixing characteristics of high speed co-flow jets by using tabbed chevron nozzle

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Saravanan A. R. ◽  
Thanigaiarasu S. ◽  
Rakesh Divvela ◽  
Rathakrishnan E.
Keyword(s):  
Experimental Investigation ◽  
Mach Number ◽  
High Speed ◽  
Radial Profile ◽  
Mixing Enhancement ◽  
Primary Flow ◽  
Potential Core ◽  
Mixing Characteristics ◽  
Chevron Nozzle ◽  
Better Than

Abstract The present study investigates the effect of chevron with tab (Tabbed chevron) fixed at the exit of the co-flowing primary nozzle on the mixing characteristics in subsonic and sonic jets. The experiment was conducted for the jet Mach number 0.6 and 0.8. The centerline Mach number decay was calculated for all these jet Mach numbers for the co-flow baseline nozzle, nozzle with chevrons and tabbed chevron (primary flow) nozzle respectively. It was found that tabbed chevron was effective in reducing the potential core length by 88.23% as compared to the chevron nozzle with baseline nozzle. The radial profile also shows that the mixing enhancement by tabbed chevron is better than chevron nozzle.

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