A profit maximization model for sustainable inventory under preservation technology and linear time-dependent holding cost by - Aashish, Pavan Kumar

“…In addition, a mathematical model is constructed to maximize the total profit function and the concavity is shown using three-dimensional graph. …”
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Effective Utilization of Data for Predicting COVID-19 Dynamics: An Exploration through Machine Learning Models by Dmytro Chumachenko, Tetiana Dudkina, Sergiy Yakovlev, Tetyana Chumachenko

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Evaluation of Turbojet Engine with Water Injection for Aircraft Use as Controlled Object by Alexandru-Nicolae Tudosie, Mihai Lungu

“…An embedded control system was described by its mathematical model; based on its equations, its block diagram with transfer functions was issued. …”
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Study on Dynamics of Hydraulic Control System for Automatic Loading and Unloading of Drill Pipe of Geological Drilling Rig by Zhijian Liu, Yunlong Chen, Hailong Ruan

“…The simulation model verifies the mathematical model. It is concluded that the maximum transient force of steel wire rope is caused by the elastic coefficient K of steel wire rope, but the magnitude is independent of K. …”
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Permeability Enhancement of Coal Seam by Lower Protective Layer Mining for Gas Outburst Prevention by Aiping He, Hua Fu, Bingjie Huo, Chaojun Fan

“…Based on the engineering background of the lower protective layer mining in Changping Coal Mine, the numerical simulation using the proposed mathematical model was performed. The results showed that the stress and permeability of the protected layer in #3 coal seam evolved dynamically with the advancement of the working face of the protective layer in #8 coal seam. …”
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Study of unusable liquid propellant residues evaporation processes parameters in the tanks of launch vehicle worked-off stage in microgravity by V. I. Trushlyakov, V. A. Urbansky

“…The physical and mathematical model of the liquid evaporation process is based on the first thermodynamics law. …”
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Study on Strength Variation of Permeable Concrete Based on Differential Calorimetry Method and Multi-Index Test by Sanqiang Yang, Meng Guo, Shichao Duan, Na Liu, Haonan Wu, Erxia Du, Meichen Liang

“…Moreover, the open gradation of pervious concrete mix ratio design is selected, and the cement content should be within the range of 20%–25%. (3) The mathematical model of permeability coefficient and porosity ratio of permeable concrete is established: k=−0.0003n2+0.0057n−0.0044; the mathematical model of permeability coefficient and compressive strength of open-graded pervious concrete: k=0.99006−0.05389c+8.02×10−4c2. …”
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Presenting a multi-objective decision-making model for cost-time trade-off considering the time value of money and solving it using particle swarm optimization by Mohammadreza Shahriari

“…To achieve this, a bi-objective mathematical model is developed to support decision-makers in selecting the optimal schedule for project execution.Methodology: In this study, a bi-objective mathematical model is proposed to balance cost and time, incorporating a nonlinear cost function and the time value of money. …”
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Ultrasonic Pretreatment-Assisted Electrohydrodynamic Drying of Potato Slices by Zhiyuan Cao, Changjiang Ding, Rui Zhao, Zhiqing Song, Hao Chen

“…The microstructure of potatoes was analyzed using infrared spectroscopy and scanning electron microscopy. Eight mathematical models were used to fit the drying of potatoes. …”
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Finite Time Control for Fractional Order Nonlinear Hydroturbine Governing System via Frequency Distributed Model by Bin Wang, Lin Yin, Shaojie Wang, Shirui Miao, Tantan Du, Chao Zuo

“…This paper studies the application of frequency distributed model for finite time control of a fractional order nonlinear hydroturbine governing system (HGS). Firstly, the mathematical model of HGS with external random disturbances is introduced. …”
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The Stability of the Model and Simulation, Control Issues for Ship System, Education, and Research by Nguyen Cong Danh

“…This article deals with the study of mathematical models and the assessment of the stability of the motion of ships, investigating properties of the system such as kinetics and stability. …”
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Numerical Simulation of Unsteady-State Flow in Dual Porous Coalbed Methane Horizontal Wells with Complex Boundary Conditions by Cheng-yong Li, Jun Zhou, Xiang-yi Yi, Yi Luo, Ping-zhi Gong

“…The bottom-hole pressure response which can reflect the gas flow characteristics is important to study. A mathematical model for description of gas from porous coalbed methane (CBM) reservoirs with complex boundary conditions flowing into horizontal wells has been developed. …”
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Modelling of the VU budget means alocation by Aleksas Pikturna, Feliksas Ivanauskas, Bogdan Lapcun

“…Two approaches of the mathematical modelling have appeared in higher education: the package model and locally designed model. …”
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Theoretical and Experimental Study on Rapid Decompression Oscillation in Altitude Chamber by Zifeng Tian, Jianfeng Lu, Zhao Gu, Lihua Yu, Hao Zhou, Lijun Yang

“…Given the frequent airflow excitation phenomenon caused by the rapid decompression of the altitude chamber, the mathematical model of the nonlinear system of the rapid decompression of the altitude chamber is established. …”
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ACCEPTABLE LIMITS FOR CORRECTION OF HEATING LOAD WHILE OPTIMIZING OPERATIONAL MODES OF HEAT SOURCES by P. I. Diachek, V. A. Sednin, A. E. Zakharevich, I. V. Shkliar

“…Numerical investigations of temperature fields in the apartments of a multi-dwelling building has been carried out on the basis of the developed mathematical model and algorithm of its realization. The investigations have  made it possible to evaluate dynamics of changes in air temperature under unsteady conditions due to increase or reduction heating device capacity with regard to standardized values. …”
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Comprehensive two-phase flow calculation method with in-channel refrigerant boiling by A. V. Zaitsev, A. A. Malyshev, K. F. Kouadio, O. S. Malinina, A. O. Lisovtsov

“…The analytical dependencies presented form together a complete mathematical model, which is implemented in the form of a computer program…”
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Intelligent Transportation Design Based on Iterative Learning by Yinpu Ma, Kai Liu

“…Most of the existing traffic optimization control methods are based on accurate mathematical models. As an uncertain and complex system, the urban traffic system faces difficulty in accurately calibrating the model parameters. …”
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Selection of Numerical Criterion Value for Determination of Short Circuit Type in Adaptive Micro-Processing Current Protection of Electric Power Lines by A. V. Kovalevsky

“…The paper considers a principle for determination of a short circuit type which is used in the mathematical model of adaptive micro-processing protection with the purpose to improve sensitivity. …”
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Determination of Number of Infected Cells and Concentration of Viral Particles in Plasma during HIV-1 Infections Using Shehu Transformation by M. Higazy, Sudhanshu Aggarwal, Y. S. Hamed

“…For this, the authors first defined some useful properties of Shehu transformation with proof and then applied Shehu transformation on the mathematical representation of the HIV-1 infection model. The mathematical model of HIV-1 infections contains a system of two simultaneous ordinary linear differential equations with initial conditions. …”
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Energy Considerations in a Model of Nematode Sperm Crawling by Borys V. Bazaliy, Ya. B. Bazaliy, Avner Friedman, Bei Hu

“…In this paper we propose a mathematical model for nematode spermcell crawling. The model takes into account both force and energybalance in the process of lamellipodium protrusion and cellnucleus drag. …”
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