Showing 21,361 - 21,380 results of 22,513 for search '"mathematics"', query time: 0.09s Refine Results
  1. 21361

    Effects of Industrial Wastewater on Water Quality Tigris River at Baghdad Using (GIS) Technique by Sahar Isam Wadeea, Rana Mozahim Hamdoon, Mudhaffar Sadiq Al-Zuhairy

    Published 2022-12-01
    “…The Analysis of water quality Includes several parameters; WQI was used to assess the water quality of the river according to a mathematical equation. Five water quality parameters were considered, those are Hydrogen Ion Concentration (pH), Biochemical Oxygen Demand (BOD5), Chemical Oxygen Demand (COD), Sulfate (SO4), Phosphate (PO4), and Total Suspended Solids (TSS) for the period (2020 to 2021).  …”
    Get full text
    Article
  2. 21362

    Development of an Innovative Magnetorheological Gearbox for Positioning Control and Anti-Disturbance of a Robotic Arm by Yuyang Zhang, Shuaishuai Sun, Lei Deng, Guorui Wang, Rui Yu, Weihua Li, Xinglong Gong, Shiwu Zhang, Haiping Du, Jian Yang

    Published 2025-01-01
    “…The classic Bouc–Wen model was used to describe the MR gearbox and then a mathematical model was established for the whole robotic arm. …”
    Get full text
    Article
  3. 21363

    Application of Electric Impedance Tomography (EIT) Technology in Critical Respiratory Rehabilitation by PAN Huaping

    Published 2024-01-01
    “…The exploration encompasses the fundamental principles of EIT including physical, mathematical, and medical aspects, alongside its commonly utilized clinical monitoring functionalities and applications in the rehabilitation of critical respiratory diseases. …”
    Get full text
    Article
  4. 21364

    A New Multivariable Grey Convolution Model Based on Simpson’s Rule and Its Applications by Song Ding, Ruojin Li

    Published 2020-01-01
    “…Thereby, the drawback analysis of the GMC (1, n) model is conducted with mathematical reasoning, which can explain why this model is inaccurate in some applications. …”
    Get full text
    Article
  5. 21365

    Optimizing Road Networks for Automated Vehicles with Dedicated Links, Dedicated Lanes, and Mixed-Traffic Subnetworks by Bahman Madadi, Rob Van Nes, Maaike Snelder, Bart Van Arem

    Published 2021-01-01
    “…We utilize both alternatives and propose a unified mathematical framework for optimizing road networks for AVs by simultaneous deployment of AV-ready subnetworks for mixed traffic, dedicated AV links, and dedicated AV lanes. …”
    Get full text
    Article
  6. 21366

    A Spatial Modeling Approach for Optimizing the Locations of Large-Scale Biogas Plants from Livestock Manure in Bangladesh by Zinat Mahal, Helmut Yabar

    Published 2025-01-01
    “…Then, the environmental benefits of selected biogas plants were estimated through mathematical equations. It was found that 475, 15, and 68 large-scale biogas plants were spatially possible from large-animal, small-animal, and poultry manure, respectively, to produce a total electricity of 7682.72 GWh (gigawatt) in 2023. …”
    Get full text
    Article
  7. 21367

    Analysis of Single Reservoir Dispatching During a Sudden Accident of Water Pollution in a Long Distance River Channel by FANG Shenguang, HUANG Daizhong, LAN Xiaofeng

    Published 2020-01-01
    “…This paper establishes the hydrodynamic model and mathematical pollutant transport and diffusion model of long distance river channel and cascade reservoir and verifies the models by analytic solutions of pollutant transport and diffusion, and sets up eleven dispatching modes of single reservoir and conducts simulation according to the sudden water pollution accident occurred at different locations at the upper or lower reaches of a reservoir. …”
    Get full text
    Article
  8. 21368

    Optimization and experimental validation of a high-efficiency oil–water cyclone separator for well testing conditions by Zhimin Li

    Published 2025-01-01
    “…The Plackett–Burman experimental method was employed to evaluate six factors affecting separation performance, with oil outlet diameter and cyclone chamber cone angle identified as significant factors. Mathematical models for separation efficiency and pressure drop were developed based on these factors. …”
    Get full text
    Article
  9. 21369

    Separation effectiveness of ideal ion exchange membranes: Application of the Gibbs-Donnan theory. by Jacek Waniewski, Leszek Pstras, Mauro Pietribiasi

    Published 2025-01-01
    “…For both cases, the presented nonlinear algebraic equations require in general the use of numerical methods to approximate their mathematical solutions, although we present as well some closed solutions for simple cases with ideal ionic mixtures. …”
    Get full text
    Article
  10. 21370

    "Predicting the Movement of Stock Prices Using Technical Analysis Indicators": Applied Research in a Sample of the Shares of Iraqi Private Commercial Banks by Asaad Gheni Jihad, Ahmed Muqdad Ismael

    Published 2023-06-01
    “…As the research community consisted of Iraqi private commercial banks، which numbered (25) banks، while the research sample consisted of (7) banks with a rate of (28%) of the research community، the research used the analytical approach for the financial data in the period between (1/8 /2021-30/4/2022)، as the financial statements (closing prices) of the research sample banks were calculated by means of mathematical equations for technical indicators، and represented them in the form of graphs to clearly determine price trends and (buy and sell) signals. …”
    Get full text
    Article
  11. 21371

    Design of a sustainable supply chain network of biomass renewable energy in the case of disruption by Leila Aslani, Atefeh Hasan-Zadeh, Yousef Kazemzadeh, Amir-Hosein Sheikh-Azadi

    Published 2024-06-01
    “…Therefore, non-renewable resources will be exhausted if alternative energy is not fully developed, leading to an energy crisis in the near future. In this paper, a mathematical model has been proposed for the design of the biomass supply chain of field residues that includes several fields where residue is transferred to hubs after collecting the residue in the hub, the residue is transferred to reactors. …”
    Get full text
    Article
  12. 21372

    Value orientations of vkontakte users with different strategies for meanings transferring by Pavel N. Ermakov, Ekaterina E. Belousova

    Published 2021-12-01
    “…Rokichs value orientations, methods of mathematical statistics (H-Kruskal-Wallis criterion, 22-criterion). …”
    Get full text
    Article
  13. 21373

    Cortical Visual Performance Test Setup for Parkinson’s Disease Based on Motion Blur Orientation by M. Erdem Isenkul

    Published 2019-01-01
    “…In future studies, developed motion-based visual tests are planned to be applied to PD patient groups/controls, and their performances with mathematical threshold values will be examined.…”
    Get full text
    Article
  14. 21374

    The Detection of Soybean Bacterial Blight Based on Polarization Spectral Imaging Techniques by Jia Yi, Huilin Jiang, Yong Tan

    Published 2024-12-01
    “…Therefore, this paper proposes the detection of the soybean bacterial blight with the polarization spectroscopic imaging method, derived from the detection principle and mathematical model of polarization bidirectional reflection distribution function on the basis of the Stokes vector analysis method. …”
    Get full text
    Article
  15. 21375

    An amplification mechanism for weak ELF magnetic fields quantum-bio effects in cancer cells by Amirali Zandieh, Seyed Peyman Shariatpanahi, Amir Abas Ravassipour, Javad Azadipour, Maryam Sadat Nezamtaheri, Zahra Habibi-Kelishomi, Mojtaba Ghanizadeh, Ali Same-Majandeh, Keivan Majidzadeh-A, Amir Taheri, Alireza Madjid Ansari, Mohammad Amin Javidi, Mohammad Mehdi Pirnia, Bahram Goliaei

    Published 2025-01-01
    “…In this study, we use a mathematical model of ROS dynamics in cancer cells to show how ROS oscillatory patterns can act as a resonator to amplify the small effects of the magnetic fields on the radical pair dynamics in mitochondrial Complex III. …”
    Get full text
    Article
  16. 21376

    To the problem of optimization of criteria for evaluating the effectiveness of providing the national security of the State by Y. V. Kobko

    Published 2022-03-01
    “…In addition, the implementation of appropriate evaluation requires the use of various methods: surveys, mathematical modeling, forecasting and more.…”
    Get full text
    Article
  17. 21377

    Assessment of scientific and technical projects of priority directions of development based on the criterion of use value by L. F. Zakharova, S. V. Novikov

    Published 2018-06-01
    “…The article deals with the organizational and procedural schemes of proposed solutions for improving the evaluation of scientific and technical projects, as well as the economic and mathematical tools for ranking the priority directions for the development of the Russian economy for the financing of scientific and technical projects from the state budget. …”
    Get full text
    Article
  18. 21378

    Organizational and technological principles of building condition monitoring at the stage of life cycle operation by S. V. Fedosov, A. A. Lapidus, A. B. Petrukhin, B. E. Narmaniya

    Published 2024-01-01
    “…The change of the compressive strength of concrete building structures can be determined according to the logarithmic law. The mathematical operator of the Cauchy problem, which consists in finding a solution to an ordinary differential equation of the first order, can be used to establish the state of a concrete structure at any period of the life cycle.Results. …”
    Get full text
    Article
  19. 21379

    Conservative Interference Injection to Minimize Wi-Fi Sensing Privacy Risks and Bandwidth Loss by Aryan Sharma, Haoming Wang, Deepak Mishra, Aruna Seneviratne

    Published 2025-01-01
    “…To achieve a reduced data rate, we propose an extension to Bianchi’s model of CSMA/CA systems and establish a new mathematical relationship between channel contention and the available CSI. …”
    Get full text
    Article
  20. 21380

    Evaluation of Adaptive Measures of Climate Change on the Income of Rural Farmers in Tarshiz Plain by Hamid Mohammadi, Sanaz Hedayat Shishvan

    Published 2022-03-01
    “…In this paper, we present a positive mathematical planning model for evaluating adaptive measures of climate change on rural farmers' incomes and natural resource management in the Tarshiz Plain. …”
    Get full text
    Article