Showing 21,021 - 21,040 results of 22,513 for search '"Mathematics"', query time: 0.12s Refine Results
  1. 21021

    Anticorrosion Behaviour of Rhizophora mangle L. Bark-Extract on Concrete Steel-Rebar in Saline/Marine Simulating-Environment by Joshua Olusegun Okeniyi, Jacob Olumuyiwa Ikotun, Esther Titilayo Akinlabi, Elizabeth Toyin Okeniyi

    Published 2019-01-01
    “…Analyses indicate excellent mathematical-correlation between the corrosion-rate, concentration of the bark-extract admixture, and electrochemical noise-resistance (ratio of the corrosion-potential standard deviation to that of corrosion-current). …”
    Get full text
    Article
  2. 21022

    Design of fractional order PDD controller for robotic arm using partial cancellation of non minimum phase zero by Manpreet Kaur, Swati Sondhi, Venkata Karteek Yanumula

    Published 2025-01-01
    “…In this work, a Fractional-order proportional derivative (FOPDD) controller is proposed for the system whose mathematical model is made up of two loops where inner and outer loops are used for pendulum and rotary arm position respectively. …”
    Get full text
    Article
  3. 21023

    Frequency Diverse Array Antennas: From Their Origin to Their Application in Wireless Communication Systems by Shaddrack Yaw Nusenu, Abdul Basit

    Published 2018-01-01
    “…In this study, we present the mathematical fundamentals of FDA antenna and why it could be exploited for wireless communication systems. …”
    Get full text
    Article
  4. 21024

    Reliability-Based Fatigue Life Prediction for Complex Structure with Time-Varying Surrogate Modeling by Lu-Kai Song, Guang-Chen Bai, Cheng-Wei Fei, Jie Wen

    Published 2018-01-01
    “…By integrating the proposed space-filling Latin hypercube sampling technique and PSO-GRNN regression function, the mathematical model of TV/PSO-GRNN is studied. The reliability-based fatigue life prediction framework is illustrated in respect of the TV/PSO-GRNN surrogate model. …”
    Get full text
    Article
  5. 21025

    Understanding the Origin of SSR in Series-Compensated DFIG-Based Wind Farms: Analysis Techniques and Tuning by Roberto Moreno-Sanchez, C. Alberto Nunez-Gutierrez, Nancy Visairo-Cruz, Julio Hernandez-Ramirez, Juan Segundo-Ramirez

    Published 2021-01-01
    “…Unlike conventional approaches to re-tuning controller gains to achieve desirable performance, these methodologies only consider the mathematical models of the states variables to be controlled. …”
    Get full text
    Article
  6. 21026

    A Y chromosome-linked genome editor for efficient population suppression in the malaria vector Anopheles gambiae by Ignacio Tolosana, Katie Willis, Matthew Gribble, Lee Phillimore, Austin Burt, Tony Nolan, Andrea Crisanti, Federica Bernardini

    Published 2025-01-01
    “…To our knowledge, our system represents a pioneering approach in the engineering of the Y chromosome to generate a genetic control strain for mosquitoes. Mathematical modelling shows that this YLE technology is up to seven times more efficient for population suppression than optimal versions of other self-limiting strategies, such as the widely used Sterile Insect Technique or the Release of Insects carrying a Dominant Lethal gene.…”
    Get full text
    Article
  7. 21027

    Modeling and simulation of seasonal performance of silica-polymethylpentene for diurnal radiative cooling under direct sunlight by G. N. Nwaji, C. R. Oraka, H. O. Okoro, A. C. Okoronkwo, N. V. Ogueke, E. E. Anyanwu

    Published 2025-01-01
    “…This study investigates the seasonal performance of a radiative cooling arrangement for all-year cooling. A 2D mathematical model of a diurnal radiative cooler was developed from first principles based on thermal energy balance and was parameterized using the climatic data of Owerri, Nigeria, to evaluate the thermal performance of the cooler during the late Harmattan (January), early rainy (April), late rainy (September), and early Harmattan (November) seasons in the study location. …”
    Get full text
    Article
  8. 21028

    Selection of Quantum Dot Wavelengths for Biomedical Assays and Imaging by Yong Taik Lim, Sungjee Kim, Akira Nakayama, Nathan E. Stott, Moungi G. Bawendi, John V. Frangioni

    Published 2003-01-01
    “…By using a previously validated mathematical model, we explored the effects of tissue absorbance, tissue scatter, wavelength dependence of the scatter, water-to- hemoglobin ratio, and tissue thickness on QD performance. …”
    Get full text
    Article
  9. 21029

    Modeling the effect of extrusion parameters on density of biomass pellet using artificial neural network by Abedin Zafari, Mohammad Hossein Kianmehr, Rahman Abdolahzadeh

    Published 2024-02-01
    “…Background: The relationships between the density of the biomass pellet and the related variables are very complicated and highly nonlinear, which make developing a single, general, and accurate mathematical model almost impossible. One of the most appropriate methods to solve these problems is the intelligent method. …”
    Get full text
    Article
  10. 21030

    Dynamic Analysis, Circuit Design, and Synchronization of a Novel 6D Memristive Four-Wing Hyperchaotic System with Multiple Coexisting Attractors by Fei Yu, Li Liu, Hui Shen, Zinan Zhang, Yuanyuan Huang, Changqiong Shi, Shuo Cai, Xianming Wu, Sichun Du, Qiuzhen Wan

    Published 2020-01-01
    “…Moreover, the feasibility of the proposed mathematical model is also presented by using Multisim simulations based on an electronic analog of the model. …”
    Get full text
    Article
  11. 21031

    Epizootic situation for infectious bovine rhinotracheitis in the Karaganda Oblast, the Republic of Kazakhstan, in 2021–2022 by V. V. Kirpichenko, F. A. Bakieva, S. B. Mamanova, E. K. Ospanov, S. E. Kaimoldina

    Published 2023-09-01
    “…To conduct a full-fledged and resultful study, the principles of sampling size representativeness provision and mathematical calculations were observed.The sampling size of the total number of epizootological units included mainly the raions and settlements in which (or near which) infectious bovine rhinotracheitis cases had been previously recorded. …”
    Get full text
    Article
  12. 21032

    Numerical simulation of frozen wall formation in water-saturated rock mass by solving the Darcy-Stefan problem by Mikhail Semin, Lev Levin

    Published 2019-05-01
    “…The proper setting of these parameters is a sine qua non for creating adequate mathematical models of heat and mass processes in the artificially frozen water-saturated rock mass.…”
    Get full text
    Article
  13. 21033

    Effective doses received by the gastrointestinal tract compartments of adults due to food intake in Egypt by Yasmine Abdalbasit, Khaled Salahel Din, Abdelbaset Abbady, Nagwa Saad

    Published 2025-01-01
    “…This estimation was based on mathematical calculations of the energy absorbed by organs due to transformations of ingested radionuclides. …”
    Get full text
    Article
  14. 21034

    Analysis and Establishment of the Isothermal Elastohydrodynamic Lubrication Model of the Cylindrical Gear with Arcuate Tooth Trace by Zhou Bo, Hou Li, Wei Yongqiao, Li Bo

    Published 2015-01-01
    “…The cylindrical gear with arcuate tooth trace has advantages of high bearing capacity,high contact strength and steady transmission,etc.But there are also failure modes such as the wear of tooth surface,pitting and scuffing when it drives,it is mainly because of the bad lubricating condition.So ensuring that it is always in good lubricity would be critical.After analyzing the meshing contact process of cylindrical gears with arcuate tooth trace,the contact model of gears is simplified.Based on the elastohydrodynamic lubrication theory,the physical and mathematical model of isothermal elastohydrodynamic lubrication for the cylindrical gear with arcuate tooth trace are established.Through the direct iterative method and Fortran procedure,the numerical solution of the model is solved and the characteristic curves of oil film are got.The influences that entrainment velocity,load and viscidity bring to lubrication characters of the cylindrical gear with arcuate tooth trace are analyzed and compared.The results show the entrainment velocity is the most important cause for the oil film thickness,the viscidity has important influences both on the oil film pressure and thickness,and the load influences less relative to other two factors.Besides,using the oil film thickness ratio,the lubrication state of gears could be estimated,which helps keeping gears approach the elastohydrodynamic lubrication state when designing.…”
    Get full text
    Article
  15. 21035

    Surface and New Building Deformation Analysis of Deep Well Strip Mining by Yuanzhong Luan, Yue Dong, Yanhe Ma, Liyuan Weng

    Published 2020-01-01
    “…In addition, the FLAC3D simulation method is used to determine the subsidence factor of different mining depth, mining width, mining length, and mining thickness, and the mathematical model between the subsidence factor and mining depth, mining width, mining length, and mining thickness is established. …”
    Get full text
    Article
  16. 21036

    Applying the carbon materials in TSVs array for enhancing heat transfer performance of three-dimensional integrated circuits by Peng Xu, Huan Huang, Songjie Zhao, Xiushan Liu, Fa Zou, Chao Li, Jun Ai, Hui Liu

    Published 2025-02-01
    “…This paper proposed the carbon materials (including MLGNR, MWCNT and SWCNT) to replace the traditional Cu as the filler of through silicon via (TSV) for enhancing heat transfer performance of three-dimensional integrated circuits (3-D ICs), meanwhile the corresponding mathematical model is established to quickly obtain steady-state temperature of each die layer. …”
    Get full text
    Article
  17. 21037

    How to improve reading comprehension: Mapping critical areas for pedagogical interventions by Antić Slobodanka, Stevanović Jelena

    Published 2024-01-01
    “…It is therefore conceptualized as a multidimensional literacy encompassing numerous dimensions-linguistic, mathematical, scientific, political, economic, media, and others. …”
    Get full text
    Article
  18. 21038

    Joint approximate diagonalization technique for modal identification of the Donghai Bridge by Ben Li, Lin Chen, Satish Nagarajaiah, Limin Sun

    Published 2025-01-01
    “…This study first formulates the JAD framework for structural identification, where different techniques in formulating the target-matrices are summarized and mathematical tools to conduct JAD are also presented. …”
    Get full text
    Article
  19. 21039

    Fine design modeling technology and intelligent implementation of through-layer drilling by Pei QIN, Changbao LIAN, Xiyuan LI, Juzheng SUN, Yuanmin LUO

    Published 2025-01-01
    “…In order to ensure the safety of coal mine production and further improve the ability of coal mine gas control, based on the theory of gas flow in coal seam, starting with the analysis of effective extraction radius of gas, a mathematical model is established to determine the key indexes of fine design layout control of through-layer holes. …”
    Get full text
    Article
  20. 21040

    Optimization Design of Pure Electric Vehicle Power System Speed Ratio by Jintang Zheng, Jiqing Chen

    Published 2019-04-01
    “…Comprehensive consideration of the dynamic performance, driving range and energy consumption requirements of pure electric vehicles, on the basis of a fixed speed ratio pure electric vehicle as the research sample, in order to make the driving motor work point on the high efficiency area, two-speed Automatic Manual Transmission (AMT) drive scheme is put forward. The mathematical model of two gears AMT pure electric vehicle model and power system optimization model are established on Cruise simulation platform. …”
    Get full text
    Article