The Optimal Control and MLE of Parameters of a Stochastic Single-Species System by Huili Xiang, Zhijun Liu

“…With the help of the techniques of stochastic analysis and mathematical statistics, sufficient conditions for the optimal control threshold value, the optimal control moment, and the maximum likelihood estimation of parameters are established, respectively. …”
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RELIABILITY-BASED ANALYSIS AND OPTIMIZATION OF SPRING LOCKING MECHANISM by Cai DeYong, Liu FuJun, Jiao XianWei, Wei Jun

“…According to the stochastic distribution of parameters,the reliability analysis of spring locking mechanism is carried out for helical spring by using probability theory and mathematical statistics. The optimization model of the locking mechanism spring parameters is established. …”
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Free-Boundary Seepage from Asymmetric Soil Channels by Adrian Carabineanu

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Multivalued Impulsive SDEs Driven by G-Brownian Noise: Periodic Averaging Result by Mahmoud Abouagwa, Anas D. Khalaf, Nadia Gul, Sultan Alyobi, Al-Sharef Mohamed

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Clinical Effect of the Treatment of Lumbar Intervertebral Disc Protrusion by Yehui Zhou, Ming Yang

“…This paper combines acupuncture and massage to treat lumbar intervertebral disc protrusion, uses a controlled trial to study the clinical effects of acupuncture combined with massage for the treatment of lumbar intervertebral disc protrusion, combines mathematical statistics to test the data, and compares and analyzes the statistical object parameters. …”
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Research of the Reliability of Planetary Gear Transmission System for Offshore Platform Lifting System by Wu Pingping, Liu Ning, Zhao Yixiang

“…By using the mathematical statistics known probability density distribution is complex,the dynamic meshing force can’t meet the normal probability distribution assumption,traditional reliability analysis methods not applicable. …”
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Research on the Optimization of Basketball Teaching Content of Physical Education Major in Artificial Intelligence Colleges and Universities by Rongtong Qiao, Jie Ren, Yuguang Ji

“…The article uses the literature material law, expert interview method, mathematical statistics, the author of Suzhou University, Chengdu research, education of Guangdong Institute of Education, Guangdong teachers college education schools such as the current sports education professional study, and the similarities and differences in teaching outline of education of Guangdong province basketball specialty to conduct a comprehensive study and analysis and comparison on the current situation of education of Guangdong teachers college basketball in the system. …”
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Quality Measurement of the latent Properties of Students Educational and Projecting Activity in Vocational Pedagogical Universities by T. V. Shutova

“…The implementation of the RUMM 2030 program and mathematical statistics tools based on the Rasch model of quality measurement is substantiated.The above method approbation regarding the estimation of the latent variables of training and designing activity of prospective vocational teachers demonstrates that the recommended quality criteria, referred to as indicators, can be used in the competence assessment of the future teachers-designers.…”
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Compilation of the Test Load Spectrum of Wind Power Gearbox based on the Random Wind Speed Model by Xu Fang, Zhou Zhigang

“…In order to compile the load spectrum for dynamic characteristic and fatigue life test of wind turbine gear transmission system,the external random wind load is obtained on the basis of simulating reality wind speed and aerodynamics theory,and by using the rain- flow counting method and mathematical statistics method,the statistic and analysis of the input random wind load data is carried out. …”
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Influence of Regulating Pool on Bend Flow by LUO Fengjie, WU Yufeng, WEN Yunping, WANG Xumin, LI Xin

“…In view of the influence of regulating pool on the bend flow, based on experimental research, and combined with mathematical statistics and numerical simulation methods, this paper studies the influence of regulating pool on the hydraulic characteristics such as flow pattern and super-elevation by introducing the evaluation index of flow pattern improvement effect and analyzing typical working conditions. …”
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Copula-based trading of cointegrated cryptocurrency Pairs by Masood Tadi, Jiří Witzany

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DEVELOPMENT OF THE TECHNIQUE OF FORMATION OF THE CONTOUR OF LIMITING ALLOWABLE INDICATORS by Y. Vorontsova, A. Korchagina, I. Barakhanova

“…Authors in detail state sequence of creation of the upper and lower bounds of a contour without use of methods of mathematical statistics.…”
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Characteristics of Professional Formation’s Indicators of Managers of the System of the Ministry of Internal Affairs of Ukraine by Yu. Yu. Boiko-Buzyl

“…The obtained results have been processed by using the methods of mathematical statistics. The originality of the stu The problem of professional and personal formation of managers of the security and defense sector of Ukraine has been studied. …”
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On Extended Neoteric Ranked Set Sampling Plan: Likelihood Function Derivation and Parameter Estimation by Fathy H. Riad, Mohamed A. Sabry, Ehab M. Almetwally, Ramy Aldallal, Randa Alharbi, Md. Moyazzem Hossain

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Analysis of Deformation Characteristics of Face Rockfill Dam with Crest Overflow in Feigu Reservoir During Operation by ZHAO Zejin, ZHOU Bin, LONG Jian, XI Lihua, ZHAN Jie

“…On the basis of the dam monitoring data,we analyze and evaluate dam deformation and dislocation distribution laws of spillway drain channels during operation upon the impounding of the face dam with crest overflow in Feigu Reservoir.The correlation analysis of environmental variables such as the reservoir water level,air temperature,and water temperature is carried out by means of mathematical statistics and spatiotemporal distribution analysis.It is concluded that the horizontal deformation and settlement of the dam crest are less than the safety warning values.Air temperature and the reservoir water level are the main environmental factors affecting dam deformation.The dislocation magnitude of the spillway drain channel is highly sensitive to temperature,but with coordinated deformation,adjacent drain channels have small disjunction momentum,and thus the spillway drain channel is in a safe state.We can reduce the uneven settlement of the spillway on the dam crest by mixing the main stone pile with a small amount of buried stone concrete.…”
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Effect size assessment in quasi-experimental studies by O. V. Krasko

“…Methods of the theory of estimation, methods of mathematical statistics.Results. Estimation of the effect size on an ordinal scale, estimation of the effect size on a binary in the case of opposite direction effects in groups, in quasi-experimental studies for the analytical method "differences in  differences".Conclusion. …”
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Depth-Based Classification for Distributions with Nonconvex Support by Daniel Hlubinka, Ondrej Vencalek

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Outlier Detection Method of Dam Monitoring Data Based on Robust Estimation and Variable Separation by LIANG Huibin, ZHANG Han, ZHANG Linsong, CAO Yuxin, ZHOU Jingren

“…The original monitoring data of dams is the most important data to grasp the operation behavior of the dams,and the outliers in the data are the focus during the analysis.Outliers are divided into two categories.One category is caused by measurement errors and should be eliminated or supplemented to avoid affecting subsequent analysis.The other is caused by structural mutations and should be highly valued.At present,main outlier recognition methods in dam engineering are based on traditional mathematical statistics and do not consider the influence of structural anomalies,which results in low recognition accuracy.Therefore,based on an in-depth study of dam monitoring data and outlier characteristics,this paper first employs robust MM estimation to eliminate the normal influence of internal and external factors and then adopts the residual measured value to eliminate the stable abnormal influence by difference before and after.Finally,according to the minimum value method,outlier identification is conducted on the residual values.The application of the measured dam data proves that the proposed method can identify the measurement outliers more effectively and robustly,and avoid the interference of structural stability anomalies.…”
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PRE-STRAIN EFFECT EVALUATION OF AUSTENITIC STAINLESS STEEL by LIU XiaoNing, YANG Fan, LIU Cen, WU YuanXiang, LIU Bing, ZHANG HongWei

“…Applying the theory of probability and mathematical statistics,the evaluation system of pre-strain effect was established: the pre-strain effect on the mechanical properties parameter standard deviation was evaluated,using F-distribution; the pre-strain effect on the mechanical properties parameter mean value was evaluate,using t-distribution. …”
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AI based scheme on voice service quality evaluation and assurance by Guangyu LI, Yanping LIANG, Li YU, Kun WANG, Yangming CHEN, Sijia LIU

“…The voice service is one of the mainstream services under the telecommunications network.The mainstream voice service quality evaluation method in the industry is to compare the voice and audio of the transceiver and calculate the POLQA MOS, which is the standard benchmark for voice quality analysis.For telecom operators, perceive voice service quality efficiently without any infringement of user privacy, and carry out precise service quality assurance, is one of the key tasks.A system using mathematical statistics and neural network to learn the mapping between voice service feature data from network side and voice quality from user side to generate evaluation model with high accuracy and precision was proposed.On this basis, the system made use of data information from multiple fields including wireless network user level and cell level, to analyze reasons and work out solutions for poor service quality, so as to assure service quality efficiently and accurately.The result shows that the scheme has achieved good practical application results.…”
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