An improved meta-heuristic algorithm to optimize the fractional-order controller for an industrial manipulator with a parallelogram structure by Nazila Nikdel

“…Therefore, this article pursues two main objectives: 1) controlling the robotic system by presenting a method based on fractional-order calculus so that it can control the system despite its complexity and non-linearity, 2) presenting the meta-heuristic algorithm "Improved Grey Wolf" to optimize the system response.Methodology: First, the mathematical model of the robot is presented based on Lagrange rules, and then the fractional-order calculus is used to design the controller. …”
Get full text

Forecasting of COVID-19 epidemic size in four high hitting nations (USA, Brazil, India and Russia) by Fb-Prophet machine learning model by Gopi Battineni, Nalini Chintalapudi, Francesco Amenta

“…Yet, there is no immediate medicine or vaccination for control this dangerous pandemic and researchers are trying to implement mathematical or time series epidemic models to predict the disease severity with national wide data. …”
Get full text

Coupled fracture modes under anti-plane loading by Les P. Pook, F. Berto, A. Campagnolo

“…On the basis of these results, and a mathematical argument, the results suggest that the stress field in the vicinity of a corner point is the sum of two singularities: one due to stress intensity factors and the other due to an as yet undetermined corner point singularity.…”
Get full text

Dynamic collateral sensitivity profiles highlight opportunities and challenges for optimizing antibiotic treatments. by Jeff Maltas, Anh Huynh, Kevin B Wood

“…Finally, we develop a stochastic mathematical model based on a Markov decision process consistent with observed dynamic collateral profiles to show measurements across time are required to optimally constrain antibiotic resistance.…”
Get full text

Physiology-informed regularisation enables training of universal differential equation systems for biological applications. by Max de Rooij, Balázs Erdős, Natal A W van Riel, Shauna D O'Donovan

“…Systems biology tackles the challenge of understanding the high complexity in the internal regulation of homeostasis in the human body through mathematical modelling. These models can aid in the discovery of disease mechanisms and potential drug targets. …”
Get full text

RESOURCES AND TECHNOLOGY AS FACTORS AFFECTING RUSSIA’S WOOD INDUSTRY: A CASE STUDY OF THE NORTHERN REGIONS by Maxim A. Shishelov, Vladimir A. Noskov

“…This study proposes a methodological toolkit for assessing the growth factors influencing the efficiency of Russia’s wood industry, employing mathematical modeling and forecasting. The findings reveal and quantify the impact of resource and technological factors on improving efficiency, providing a detailed analysis of their influence on target performance indicators. …”

Automatic Implementation of Fuzzy Reasoning Spiking Neural P Systems for Diagnosing Faults in Complex Power Systems by Haina Rong, Kang Yi, Gexiang Zhang, Jianping Dong, Prithwineel Paul, Zhiwei Huang

“…An FRSN P system offers an intuitive illustration based on a strictly mathematical expression, a good fault-tolerant capacity, a good description for the relationships between protective devices and faults, and an understandable diagnosis model-building process. …”
Get full text

PEDAGOGICAL ASSISTANCE IN HIGH SCHOOL STUDENTS’ PROFESSIONAL SELF–DETERMINATION by V. N. Kormakova, E. N. Musaelian, D. I. Ruziyeva

“…The solution of the problems and test assumptions have been provided with the help of the following methods: theoretical analysis of philosophical, psychological, sociological and pedagogical works; diagnostics; observation; archival research; taxonomic qualimetric; pilot, ascertaining and educational experiments; methods of mathematical statistics.Results. The research shows a positive change in creativity, reflexivity and values of high school students in experimental groups. …”
Get full text

Heat transfer analysis of fluid flow over a nonlinear porous radially moving sheet: Benchmark solutions by Sina Sadighi, Hossein Afshar, Payam Jalili, Bahram Jalili, Davood Domiri Ganji

“…The mathematical study focuses on the exact solutions of Casson fluid flow on a radially stretching/shrinking porous sheet subject to the convective boundary condition. …”
Get full text

The Impacts of Fairness Concern and Different Business Objectives on the Complexity of Dual-Channel Value Chains by Qiuxiang Li, Yuhao Zhang, Yimin Huang

“…The entropy complexity and dynamic characteristic of the dual-channel system are analyzed through mathematical analysis and numerical simulation, such as local stability, bifurcation, entropy, and chaos. …”
Get full text

Determination of Selected Polycyclic Aromatic Compounds in Particulate Matter Samples with Low Mass Loading: An Approach to Test Method Accuracy by Susana García-Alonso, Rosa María Pérez-Pastor, Víctor Archilla-Prat, David Sanz-Rivera, Enrique Rojas-García, Gaizka Aragón-Urrengoetxea, Jesús Javier Rodríguez-Maroto

“…Intermediate precision was estimated by data comparison from two mathematical approaches: normalized difference data and pooled relative deviations. …”
Get full text

The technology of formation of teamwork skills in terms of project-based learning students by Svetlana D. Lipatova, Evgeniya A. Khokholeva

“…Stefanson Q-sorting, a formative experiment in the format of students project activities and the authors questionnaire Students attitude to teamwork in the conditions of project activities, mathematical methods of analysis. Results. The technology of forming team work skills in the framework of project training of university students has been tested. …”
Get full text

Optimization Research on the Performance of the RC-DTH Air Hammer Based on Computational Fluid Dynamics by Zihao Liu, Yongjiang Luo, Wenchao He, Rui Tao, Jiangfu He, Yongliang Sun, Hongwei Chen, Qianting Hu

“…To optimize the performance of the RC-DTH air hammer, a mathematical model detailing each phase of the piston’s movement has been constructed in the present work. …”
Get full text

Modelling and industrial experiment on the dynamic deviation of rolling force during high precision rolling process by Shanshan Chen, Chundong Liu, Shuilin Lin

“…In this work, physical and mathematical models of rolling force deviation are developed to elucidate the underlying formation mechanism, taking into account the contact deformation of the roll system, plastic deformation of the strip and roll crossing models. …”
Get full text

Cooperative secure transmission against collusive eavesdroppers in Internet of Things by Xin Fan, Yan Huo

“…In the cases of cooperative jamming and without cooperative jamming, the closed-form expressions of the secrecy outage probability are deduced, and the influence of system parameters on the secrecy outage probability becomes more intuitive through a strict mathematical asymptotic behavior analysis. In addition, considering the energy limitation of Internet of Things devices, we propose a power allocation algorithm to minimize the total transmission power given the security requirements. …”
Get full text

Research on Constriction Resistance of Drum Gear Coupling of High Speed EMU by Chunjun Chen, Xiang Zheng, Lu Yang, Linchun Zhou

“…In order to research the constriction resistance of the drum gear coupling of high speed EMU traction motor drive system，by using the geometrical analysis method，a mathematical model of the external tooth surface is established according to the structural parameters of the coupling. …”
Get full text

A robust multi-objective multi-priodic planning approach to the problem of locating the allocation of organ transplant centers under conditions of uncertainty by Elham Nejati, Mahdi Yousefi Nejad Attari, Asgar Hajibadali

“…On the other hand, due to the rapid growth of the demand for organ transplantation and the lack of resources, the patient's waiting time to complete the transplantation process plays a vital role in the organ transplantation system.Methodology: This study presents a robust bi-objective mathematical model for the location problem of allocating organ transplant centers under uncertainty, which includes the total costs of the organ transplant system as well as the average patient waiting time for organ transplantation, which follows a G/G/m queuing system.Findings: To solve this model, the Non-Dominated Sorting Genetic Algorithm II (NSGA-II) has been used. …”
Get full text

Quantification of external disturbance forces in sliding microwire by Fazlar Rahman, M.A. Salam Akanda

“…Analytical assessment is also complex because of multi-physics involvement, nonlinearity of forces, and a lack of suitable mathematical models. Numerical analysis of microstructures is performed in the absence of all disturbance forces, whereas their influences cannot be eliminated during the experiment. …”
Get full text

A proportionately increased small and equal batch delivery under consignment stock agreement for a single vendor, multiple buyers supply chain system by Kehinde Adegbola, Abdulrakib Abdulrahman

“…These n shipments are proportionately increased according to the vendor rate of production to each buyer’s demand rate. A mathematical cost function is developed to reduce the overall cost of the integrated supply chain system through the optimal cycle time and the optimal numbers of shipments to be delivered to each buyer. …”
Get full text

Correlation of artificial neural network and multi-attribute transformation: a test case to predict the effective porosity of Cretaceous sandstones of the Sembar Formation, southea... by Furqan Aftab, Furqan Aftab, Furqan Aftab, Furqan Aftab, Mohammad Zafar, Muhammad Iqbal Hajana, John H. Shaw

“…Artificial Neural Network’s (ANN’s) have emerged as an effective tool for deriving nonlinear mathematical relationships between seismic attributes and well logs that are theoretically plausible and may prove geologically realistic. …”
Get full text