Results 1 to 10 of about 177,235 (109)

Grouting Treatment of Water and Mud Inrush in Fully Weathered Granite Tunnel: A Case Study

open access: yesGeofluids, Volume 2020, Issue 1, 2020., 2020
When mountain tunnel passes through completely weathered granite strata, water and mud inrush is easy to occur, causing casualties and economic losses. Grouting is a common and effective treatment method for water and mud inrush disaster. The current existing researches focus on theoretical analysis, numerical simulation, and laboratory test, and the ...
Jiandong Niu   +8 more
wiley   +1 more source

The Allocation of Base Stations with Region Clustering and Single-Objective Nonlinear Optimization

open access: yesMathematics, 2022
For the problem of 5G network planning, a certain number of locations should be selected to build new base stations in order to solve the weak coverage problems of the existing network.
Jian Chen   +5 more
doaj   +1 more source

Forecasting of Automobile Sales Based on Support Vector Regression Optimized by the Grey Wolf Optimizer Algorithm

open access: yesMathematics, 2022
With the development of the Internet and big data, more and more consumer behavior data are used in different forecasting problems, which greatly improve the performance of prediction.
Fei Qu   +6 more
doaj   +1 more source

Yamaguchi -Noshiro Type Bi-Univalent Functions Associated with Sălăgean-Erdély–Kober Operator

open access: yesMathematics, 2022
We defined two new subclasses of analytic bi-univalent function class Σ, in the open unit disk related with the Sălăgean–Erdély–Kober operator. The bounds on initial coefficients |a2|,|a3| and |a4| for the functions in these new subclasses of Σ are ...
Asma Alharbi   +2 more
doaj   +1 more source

Parameterization of a Novel Nonlinear Estimator for Uncertain SISO Systems with Noise Scenario

open access: yesMathematics, 2022
Dynamic observers are commonly used in feedback loops to estimate the system’s states from available control inputs and measured outputs. The presence of measurement noise degrades the performance of the observer and consequently degrades the performance
Ahmad Taher Azar   +8 more
doaj   +1 more source

Physiological Balance of the Body: Theory, Algorithms, and Results

open access: yesMathematics, 2021
Aim: To confirm algorithm of determination of risk groups with physiological imbalance in the population exposed to unfavorable anthropogenic influences.
Irina Alchinova, Mikhail Karganov
doaj   +1 more source

Mixed Convection Flow of Water Conveying Graphene Oxide Nanoparticles over a Vertical Plate Experiencing the Impacts of Thermal Radiation

open access: yesMathematics, 2022
Water has drawn a lot of interest as a manufacturing lubricant since it is affordable, eco-friendly, and effective. Due to their exceptional mechanical qualities, water solubility, and variety of application scenarios, graphene oxide (GO)-based materials
Umair Khan   +4 more
doaj   +1 more source

Fractional-Order Memristive Wilson Neuron Model: Dynamical Analysis and Synchronization Patterns

open access: yesMathematics, 2022
Fractional nonlinear systems have been considered in many fields due to their ability to bring memory-dependent properties into various systems. Therefore, using fractional derivatives to model real-world phenomena, such as neuronal dynamics, is of ...
Gayathri Vivekanandan   +4 more
doaj   +1 more source

Introduction to The Spiral Dynamics and The Spiral Coriolis Force [PDF]

open access: yes, 2018
The spiral dynamics of a point-like body of mass m in spiral differential geometry are introduced. New ideal motions have been studied, the uniform spiral motion and the uniform spiral-polar motion.
Fabbri, Italo Mario
core   +2 more sources

Gathering Strength, Gathering Storms: Knowledge Transfer via Selection for VRPTW

open access: yesMathematics, 2022
Recently, due to the growth in machine learning and data mining, for scheduling applications in China’s industrial intelligence, we are quite fortunate to witness a paradigm of evolutionary scheduling via learning, which includes a new tool of ...
Wendi Xu   +8 more
doaj   +1 more source

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