Critical limit for phosphorus in a Red Latosol of the Brazilian Cerrado by Louise Stefanello Hemielevski, June Faria Scherrer Menezes, Augusto Matias de Oliveira, Mariana Pina da Silva Berti, Linia Dayana Lopes Machado, Paulo Fernandes Boldrin, Veridiana Cardozo Gonçalves Cantão, Rodrigo Gomes Silva

“…The aim of this study was to determine a mathematical model for the critical limit for phosphorus in the environment (CLPE) in a Red Latosol of the Cerrado, and to monitor the amount of P in the soil of 46 rural properties in the micro watershed of the Ribeirão Abóbora River. …”
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A Study on the Evaluation Method for the Operating Status of Overhead Transmission Lines Based on Analytic Hierarchy Process (AHP) by Qingbin Wang, Liang Wang, Rui Tian, Shuangpeng Cao, Shuai Zuo, Di Che, Lantao Jing

“…ABSTRACT To address the challenge of dynamically assessing overhead transmission lines under varying meteorological conditions through manual inspections and drone monitoring, this study proposes an evaluation method for the operating status of overhead transmission lines based on the Analytic Hierarchy Process (AHP). A mathematical model based on AHP is first established to perform weighted processing of five meteorological factors, generating a comprehensive meteorological dataset. …”
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Multiobjective Optimization Design and Performance Prediction of Centrifugal Pump Based on Orthogonal Test by Yuqin Wang, Xinwang Huo

“…In order to improve the hydraulic performance of the centrifugal pump, based on the original model, the optimization mathematical model with the four indexes head, efficiency, shaft power, and pump net positive suction head as objective function was established, and the multiobjective optimization design of the centrifugal pump was carried out by orthogonal test. …”
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On modeling problem of optimizing the environmental performance of ship power plant with reciprocating thermal engines as complex technical systems, taking into account operating c... by V. R. Vedruchenko, A. V. Shtib, I. I. Malakhov

“…On modeling the problem of optimizing the environmental performance of a ship power plant with reciprocating thermal engines as complex technical systems, taking into account operating costs and risk indices when operating on multi-grade fuels. A mathematical model of the problem of optimizing the environmental performance indicators of technical complex systems is presented based on the criterion of minimum total costs. …”
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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. …”
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THE ELECTRONIC SYSTEM FOR THE MANAGEMENT OF UNIVERSITY EDUCATIONAL PROGRAMS by Yevhen Palamarchuk, Olena Kovalenko

“…An analysis of the main processes of EP management was performed, and interested parties, their roles, and participation in the methods were determined. The proposed mathematical model is the basis of management for introducing the EP, its development, and implementation control based on quality parameters. …”
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Failure risk study of anchor bolts durability for loess slope under long-term hydro-thermal effect by Zhou Chang, Weifeng Sun, Changgen Yan, Hengxing Lan, Yuling Shi, Han Bao

“…The anchor serviceability and durability were evaluated by establishing a time-dependent mathematical model of axial forces. The results show that the slope shallow loess exhibited hydro-thermal fluctuations annually during operation, subjecting the loess to continuous dry–wet cycles. …”
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An Evolutionary Learning Whale Optimization Algorithm for Disassembly and Assembly Hybrid Line Balancing Problems by Xinshuo Cui, Qingbo Meng, Jiacun Wang, Xiwang Guo, Peisheng Liu, Liang Qi, Shujin Qin, Yingjun Ji, Bin Hu

“…In this work, a hybrid production line that combines disassembly and assembly processes, incorporating human–machine collaboration, is designed based on the traditional disassembly line. A mathematical model is proposed to address the human–machine collaboration disassembly and assembly hybrid line balancing problem in this layout. …”
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Application of information technologies for automation management of environmental activity by V. A. Rybak, A. D. Grib, Sh. Ahmad

“…For industries and technologies that do not fall into the category of rational from the point of view of environmental management, a mathematical model of their optimization has been developed with the selection of specific environmental protection measures. …”
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A Multiobjective Model for a Multilevel Blood Supply Chain to Improve the Attractiveness of Blood Centers during the COVID-19 Pandemic by Abolfazl Moghimi Esfandabadi, Davood Shishebori, Mohammad-Bagher Fakhrzad, Hassan Khademi Zare

“…In order to minimize the costs of the entire supply chain network and maximize the attractiveness of the BCCs, a two-objective mathematical model is developed. It produces Pareto solutions using the ε-constraint method. …”
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Study of Multi-Service Networks and Communication Systems Using Distributed Network Technology in Mountain Areas by Rustamova D. F., Mehdiyeva A. M., Mahmudova Z. A., Abdullaev J., Sapaev B.

“…The characteristics of corporate multiservice networks and communication systems using the technology of building distributed communication networks are analyzed and investigated, and a mathematical model of quality of service is proposed taking into account the management of information and network resources. …”
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The Future of Last-Mile Delivery: Lifecycle Environmental and Economic Impacts of Drone-Truck Parallel Systems by Danwen Bao, Yu Yan, Yuhan Li, Jiajun Chu

“…Specifically, a mathematical model for this delivery system is developed to optimize joint delivery operations. …”
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A Prediction Method of Electromagnetic Environment Effects for UAV LiDAR Detection System by Min Huang, Dandan Liu, Liyun Ma, Jingyang Wang, Yuming Wang, Yazhou Chen

“…Traditional electromagnetic environment effect prediction methods mostly use a single model of mathematical model and machine learning, but the traditional prediction method has poor processing nonlinear ability and weak generalization ability. …”
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Esterification of Oleic Acid for Biodiesel Production Using a Semibatch Atomization Apparatus by Marcell S. Deus, Katherine C. O. Deus, Daniel S. Lira, Jackson A. Oliveira, Carlos E. A. Padilha, Domingos F. S. Souza

“…The size of droplets was determined by computational image processing. A mathematical model was also developed to describe the conversion of oleic acid to ethyl ester as a function of molar concentration of components and operating conditions of the reactor. …”
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The analysis of bearing capacity of main pipeline in presence of corrosion defects by К. А. Vansovich, I. P. Aistov, А. А. Nakhlestkin, D. S. Beseliya

“…A mathematical model is presented that allows modeling fatigue defects of corrosion origin on main pipelines. …”
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Stochastic differential equations to model influenza transmission with continuous and discrete-time Markov chains by Kazi Mehedi Mohammad, Md. Kamrujjaman

“…We consider the modified five-compartment SEIRT mathematical model to estimate the recent trends and future prediction of basic reproduction number and infection case. …”
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Errors analysis in pyrometric measurements in industrial environment by D. B. Ponomarev, V. A. Zakharenko, E. V. Abramova

“…On the Planck function and the aluminum reflection coefficient mathematical model basis the analytical aluminum radiation coefficient dependence on temperature and wavelength is obtained. …”
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Prediction of oxygen regime indicators in Danube river by V. L. Bezsonnyi, O. V. Tretyakov, A. N. Nekos, Ye. V. Chistov

“…Statistical, the Streeter-Phelps mathematical model was applied. Results. The study used long-term data from the state monitoring of water resources of the Danube River on indicators of dissolved oxygen (DO) and biochemical oxygen demand (BOD5). …”
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A Study on Dynamic Characteristics of Satellite Antenna System considering 3D Revolute Clearance Joint by Zhengfeng Bai, Jijun Zhao

“…The dynamics modeling and analysis of the satellite antenna system are investigated considering the 3D revolute clearance joint. Firstly, the mathematical model of the 3D revolute clearance joint is established, and the definitions of the radial and axial clearance are presented. …”
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A Design of a Redundancy-Based Cascaded Bidirectional DC–DC Converter for Improved Reliability in Energy Storage Devices by Thales Augusto Fagundes, Guilherme Henrique Favaro Fuzato, Rafael Fernando Quirino Magossi, Ana Lais Rui Oliveira, Ricardo Quadros Machado

“…Subsequently, the coupled mathematical model of the proposed topology can be readily calculated, considering all feasible (different) subcircuits according to the switching pattern. …”
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