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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Resistance Characteristics of Riparian Plants in South China:A Case Study of Shenzhen River by ZHENG Shaoping, TONG Xiaolei, HU Haonan

“…The water-blocking characteristics of riparian plants are an important factor affecting the flood discharge capacity of the river.Taking the Shenzhen River as an instance,this paper adopts image analysis remote sensing to analyze the changes in the growth range of riparian plants from 2008 to 2018.Based on the measured flood data and a one-dimensional mathematical model,research combinations of different channel composite roughness are set to quantitatively analyze the influence of the riparian plants on the composite roughness of the river section and then study the degree of influence of riparian plants on flood flow velocity and flood stage.The study shows that from 2008 to 2018,the riparian plants in the middle and lower reaches of the Shenzhen River expanded by nearly 30 m into the river channel.The composite roughness of the river channel increased by about 0.005.In flood conditions of once in 200,100,and 50 years,the water level of the river channel increased by 1.1 m,0.7 m,and 0.5 m,respectively.…”
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FEATURE EXTRACTION AND ESTABLISHMENT BASED ON PUMPING UNIT WORKING CONDITIONS AND GLOBAL FAULT IDENTIFICATION by REN Taizhu, FAN Jun, JIANG Xiaxin

“…The dynamometer card was pretreated by mathematical morphology through the analysis of the motion state of the pumping unit valve and the sucker rod. …”
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A Living Architecture for the Digital Era by Carlo Ratti

“…During the mid-1400s, into the context of a craft-based architectural tradition, Leon Battista Alberti introduced a mathematical approach to graphic representation. In doing so, he paved the way for Renaissance classicism: architecture focused on precision and representation through drafting rather than approximate construction by artisans. …”
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Performance Analysis and Comparison for High Maneuver Target Track Based on Different Jerk Models by Qinghai Meng, Bowen Hou, Dong Li, Zhangming He, Jiongqi Wang

“…The simplified dynamic model is used to gain the standard trajectory with Runge-Kutta numerical integration method. The mathematical simulations show that Jerk model with self-adaptive noise variance has the best robustness while other models may diverge when the initial error is much larger. …”
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METHOD FOR DETERMINING THE CRITICAL POINT OF ELASTIC⁃PLASTIC OF M⁃B MODEL by CAO HongJun, ZHU Min, WANG ShengAo, DENG LiChongYang, MA DeSheng

“…The determination of the elasto⁃plastic critical point is very important for the study of the rough surface contact problem.In order to solve the shortcomings of the existing M⁃B model elasto⁃plastic critical point determination method,the characterization value is unmeasurable and difficult to apply.Based on the basic model of fractal theory,the distribution function and probability distribution density of asperity truncated area were obtained by means of mathematical statistics.Combined with the ideal elastic and plastic contact models of Hertzian contact,the normal force model in the process of plane⁃plane contact with fractal characteristics was obtained.Based on the difference between the actual contact area and the cut⁃off area during plastic deformation,a correction factor was proposed,and a method for determining the elasto⁃plastic critical point with the critical normal force as the characterization quantity was finally obtained.The new method takes the normal force as the characterization quantity and needs to be obtained through calibration experiments,which is more operational and credible.…”
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The Analysis and Review of Danishnama-yi ‘Ala’i (Mola Publication) by FathAli Akbari, Malakeh Pandjoo

“…Because the special taste of Ibn Sina in the Alaii encyclopedia is that Elme Zirin is to be placed before the Elme Barin and mathematical sections; while, in this work (Mola publication) this feature is taken from the encyclopedia and the Elme Barin follows logic and is posed before music and Elme Zirin. …”
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PRINCIPLE AND EXPERIMENT SIMULATION OF THE TELESCOPIC CASING ANTI-SWING DEVICE OF OFFSHORE CRANE by HAN GuangDong, CHEN HaiQuan, SUN YuQing, ZHANG JinNan, WANG ShengHai

“…The telescopic sleeve device was introduced. A mathematical model of the ship,crane and telescopic sleeve is established. …”
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Intelligent Robust Control of Roadheader Based on Disturbance Observer by Shuo Wang, Dongjie Wang, Aixiang Ma, Xihao Yan, Sihai Zhao

“…First, the working conditions of the cutting section were analyzed, and a mathematical model was established. Then, a high-gain disturbance observer was designed based on the system model to analyze cutting loads and compensate for uncertainties and disturbances. …”
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THE INFERENCE METHOD OF WHEEL LOAD BASED ON THE ACCELERATION OF AXLE HEAD by ZHENG SongLin, GUO ZhengXiang, FENG JinZhi, FANG Jin, SHEN YongFeng

“…By using real-time signal transformation and mathematical statistics method,the collected load spectrum of vertical wheel load and the vertical acceleration of the axle head,an inference model were analyzed and discussed between the axle head and the wheel.The analysis method was validated by a reality car test. …”
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The Optimal Noise Distribution for Privacy Preserving in Mobile Aggregation Applications by Hao Zhang, Nenghai Yu, Honggang Hu

“…In this paper, we develop a mathematical framework to derive the optimal noise distribution that provides privacy protection under the constraint of a limited value deviation. …”
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Conciliating accuracy and efficiency to empower engineering based on performance: a short journey by Chinesta, Francisco, Cueto, Elias

“…Then, the art of simulation concerns the ability of solving these complex mathematical objects expected to describe the physical reality as accurately as possible (accuracy with respect to the exact solution of the models) and as fast as possible. …”
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Algorithm of underdetermined convolutive blind source separation for high reverberation environment by Yuan XIE, Tao1 ZOU, Weijun SUN, Shengli XIE

“…To separate the underdetermined convolutive mixture signals in the high reverberation environment, a novel algorithm of underdetermined convolutive blind source separation was proposed.Aiming at the influence of high reverberation environment, a global impulse response network was designed to weaken reverberation echo, improving signal quality.A new mathematical model of time-frequency mixing signals was established based on the global impulse response network.The global impulse response matrix which shortened the length of the traditional impulse response, reduced the approximation error of model transformation caused by high reverberation.The real-time update learning rules of model parameters were designed based on the theory of nonnegative matrix factorization, and the source signal separation problem was converted into the model parameter optimization problem, achieving blind source separation of mixing signals.Experimental results show that the proposed algorithm can effectively realize the blind source separation of Chinese and English speech and music signals, and the comparision with existing popular algorithms verified the superiority of the proposed algorithm.…”
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Digital technologies in the system of teaching students at the university by E. Z. Imaeva, N. A. Sukhareva, Yu. V. Kostikova

“…The following methods were used in the study: testing, questioning, analysis of performance results, mathematical methods of data processing, etc. Methods for diagnosing learning motivation and emotional attitude to learning, studying the levels of formation of students’ cognitive interests (author’s method), a questionnaire for assessing students’ knowledge in the field of research activities were applied as well. …”
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Performance Management of University Financial Budget Execution Relying on Comprehensive Budget Management Strengthening Model by Huwei Li, Yanlin Guo

“…Moreover, this paper puts forward the idea of analyzing the proportion of investment funds and obtains the optimal distribution proportion through mathematical methods. Under the circumstance that the total funding input remains unchanged, this paper adjusts the investment ratio to improve the efficiency of the colleges and centers in the school and combines actual needs to construct an intelligent model of financial budget execution performance management for colleges and universities that relies on the comprehensive budget management enhancement model. …”
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Estimation of Disease Transmission in Multimodal Transportation Networks by Yu Zheng

“…Mathematical models are important methods in estimating epidemiological patterns of diseases and predicting the consequences of the spread of diseases. …”
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Modelling the Effect of SPION Size in a Stent Assisted Magnetic Drug Targeting System with Interparticle Interactions by Adil Mardinoglu, P. J. Cregg

“…Here, we develop a mathematical model for studying the interactions between the MDCPs enriched with three different diameters of SPIONs (6.6, 11.6, and 17.8 nm) in the MDT system with an implanted magnetizable stent using different magnetic field strengths and blood velocities. …”
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Hydrodynamic Numerical Simulation of the Sipaikou Reach of the Yellow River in Ningxia Based on MIKE 3 by LIU Xin, LI Chunguang, LAN Bin, HUANG Chuanji, HE Jinsha

“…In order to study the flow of the 4.530 km reach under the influence of the spur dikesafter the Sipaikoureach of the Yellow River in Ningxia runs under the “curve cut-off” project,and provide decision-making references and suggestions for the safe and stable operation of theproject,aiming at the unique terrain and geomorphological features of the reach, this paperconstructs a three-dimensional hydrodynamic mathematical model of Sipaikou with the help of MIKE 3software, and verifies the applicability and correctness of the built model with the hydrologicaldata measured on site in July 18. …”
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A Methodical Approach to Design and Valuation of Weather Derivatives in Agriculture by Jindrich Spicka, Jiri Hnilica

“…Design and valuation of the weather derivatives is an interdisciplinary approach covering agrometeorology, statistics, mathematical modeling, and financial and risk management. …”
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Damping Based Traffic Allocation in Wireless Machine-to-Machine Communications Networks by Ruiguo Yu, Zhenxia Yuan, Mankun Zhao, Mei Yu, Xu Lu

“…When we tried to analyze the load on different paths using the simplest multipath routing algorithms, we found that the load changes just like simple harmonic motion, which inspires us to use physic and mathematic methods and tools to analyze the loading balance problems. …”
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