Showing 20,001 - 20,020 results of 21,415 for search '"Mathematics"', query time: 0.12s Refine Results
  1. 20001
  2. 20002
  3. 20003
  4. 20004
  5. 20005

    Fuzzy Constrained Predictive Optimal Control of High Speed Train with Actuator Dynamics by Xi Wang, Yan Zhao, Tao Tang

    Published 2016-01-01
    “…The dynamics feature of the high speed train is modeled as a cascade of cars connected by flexible couplers, and the formulation is mathematically transformed into a Takagi-Sugeno (T-S) fuzzy model. …”
    Get full text
    Article
  6. 20006

    Applied research note: Predicting carcass portion weights for purebred turkey (Meleagris gallopavo) lines using a 2D imaging system by Shai Barbut, Emily M. Leishman, Ryley J. Vanderhout, Benjamin J. Wood, Christine F. Baes

    Published 2025-03-01
    “…The present study developed mathematical equations to predict turkeys’ (4,000) meat yield using a non-invasive real-time 2D carcass imaging system. …”
    Get full text
    Article
  7. 20007

    Reactive Power Optimization of Distribution Network Considering the Reactive Power Output of Doubly Fed Induction Generator by Cheng ZHANG, Yu CHEN, Can LI, Liangshuai LU, Zhenglong XIA

    Published 2025-01-01
    “…[Method] Based on the segmentation idea, the uncertain dynamic problem of wind power was transformed into a definite static problem, and the improved whale optimization algorithm was used to solve the mathematical model. In order to solve the problems of low precision, slow convergence speed and easy to fall into local optimality of the traditional whale optimization algorithm, a hybrid strategy was adopted to improve whale optimization algorithm, and some improved methods such as tent mapping initialization, adaptive weight and adaptive probability threshold were introduced. …”
    Get full text
    Article
  8. 20008

    DESIGN AND EXPERIMENTAL STUDY OF SORGHUM CUTTING TABLES BASED ON A PUSH AND DIVISION INTEGRATED OUTER DIVIDER by Qinghao He, Duanyang Geng, Jianning Yin, Dong Yue, Lei Ni

    Published 2025-01-01
    “…The Box–Behnken experimental design method was used to investigate the effects of the forward speed, rotation speed of the grain lifter and dividing angle of the outer divider on the lodging and broken stem loss rates during sorghum harvesting. The regression mathematical model and response surface of the lodging and broken stem loss rates and the analysis factors were established, and the optimal working parameters of the outer divider were determined as follows: the dividing angle of the outer divider was 20°, the forward speed was 0.8 m/s, and the rotating speed of the grain lifter was 330 rpm. …”
    Get full text
    Article
  9. 20009

    Improving Diabetic Patients Monitoring System Using (NCA-CNN) Algorithm based on loT by Ayas Talib Mohammad, Jaber Parchami

    Published 2024-06-01
    “…The NCA algorithm is a mathematical method that rates the characteristics based on the results of an analysis of the data and picks the most significant aspects. …”
    Get full text
    Article
  10. 20010

    Some Investigations on Protease Enzyme Production Kinetics Using Bacillus licheniformis BBRC 100053 and Effects of Inhibitors on Protease Activity by Zahra Ghobadi Nejad, Soheila Yaghmaei, Nazanin Moghadam, Bahareh Sadeghein

    Published 2014-01-01
    “…Due to great commercial application of protease, it is necessary to study kinetic characterization of this enzyme in order to improve design of enzymatic reactors. In this study, mathematical modeling of protease enzyme production kinetics which is derived from Bacillus licheniformis BBRC 100053 was studied (at 37°C, pH 10 after 73 h in stationary phase, and 150 rpm). …”
    Get full text
    Article
  11. 20011

    Fractional Partial Differential Equation: Fractional Total Variation and Fractional Steepest Descent Approach-Based Multiscale Denoising Model for Texture Image by Yi-Fei Pu, Ji-Liu Zhou, Patrick Siarry, Ni Zhang, Yi-Guang Liu

    Published 2013-01-01
    “…To solve the problem, a fractional partial differential equation-based denoising model for texture image is proposed, which applies a novel mathematical method—fractional calculus to image processing from the view of system evolution. …”
    Get full text
    Article
  12. 20012

    A Two-Disk Extended Jeffcott Rotor Model Distinguishing a Shaft Crack from Other Rotating Asymmetries by Xi Wu, Jim Meagher

    Published 2008-01-01
    “…A mathematical model of a cracked rotor and an asymmetric rotor with two disks representing a turbine and a generator is utilized to study the vibrations due to imbalance and side load. …”
    Get full text
    Article
  13. 20013

    Analytical Solutions of Fractional Walter’s B Fluid with Applications by Qasem Al-Mdallal, Kashif Ali Abro, Ilyas Khan

    Published 2018-01-01
    “…A newly defined approach of Caputo-Fabrizio fractional derivative (CFFD) has been used in the mathematical formulation of the problem. By employing the dimensional analysis, the dimensional governing partial differential equations have been transformed into dimensionless form. …”
    Get full text
    Article
  14. 20014

    Combining Deterministic and Probabilistic Approaches in an Improved Volumetric Model With the Aim to Reduce Geological Uncertainties for Accurate Hydrocarbon Reserve Estimation: Ca... by Bawane Godwe Justine, Mambou Ngueyep Luc Leroy, Tchotang Theodore, Eze Eze Jordan

    Published 2024-01-01
    “…To achieve this goal, a mathematical model was built using the volumetric expression of the stock tank original oil in place (STOIIP), the Raymer–Hunt expression of porosity and transit time, and the Simandoux model modified by the Schlumberger expression of water saturation. …”
    Get full text
    Article
  15. 20015

    A multi-objective robust possibilistic programming approach to designing sustainable and reliable closed-loop supply chain network (case study: aluminum industry) by Sajad Amirian, Maghsoud Amiri, Mohammad Taghi Taghavifard

    Published 2024-08-01
    “…The proposed approach eliminates the need for iterative consideration by decision-makers by providing unlimited choices from the optimism-pessimism spectrum. The mathematical model developed in this research is of mixed integer linear programming type, which is implemented in GAMS software to solve it and find Pareto optimal solutions.Findings: The accuracy of the overall performance of the proposed model has been evaluated with four examples (based on the coefficients of the objective functions) from a case study in the aluminium industry. …”
    Get full text
    Article
  16. 20016

    Overview of modern technologies for measuring, predicting and correcting turbulent distortions in optical waves by V.P. Lukin, I.P. Lukin

    Published 2024-02-01
    “…The work consists of the following parts: description of a technique for measuring fluctuations of optical waves in an atmospheric path, theoretical calculations of fluctuations by analytical analysis and mathematical modeling methods, technology for predicting turbulent air movement by the numerical solution of the Navier–Stokes equations and, finally, constructing adaptive optics systems that compensate for the turbulent distortions in optoelectronic image construction systems. …”
    Get full text
    Article
  17. 20017

    Asymmetric Response to Global Warming by Anatoliy Zhukov, Walery Zukow

    Published 2025-01-01
    “…Theoretical research methods included comparative analysis, mathematical calculations, and a systems approach to assessing climate change. …”
    Get full text
    Article
  18. 20018

    Soil erosion by assessing hydrothermal conditions of its formation by A.B. Achasov, A.A. Achasova, A.V. Titenko

    Published 2019-08-01
    “…Formation of the soil’s natural profile on the slopes, caused by the action of natural factors of soil formation, can be described using a mathematical model, characterizing hydrothermal conditions of the slope areas through relative parameters of insolation (Ki) and moisture. …”
    Get full text
    Article
  19. 20019

    Effects of Urbanization Expansion on Landscape Pattern and Region Ecological Risk in Chinese Coastal City: A Case Study of Yantai City by Di Zhou, Ping Shi, Xiaoqing Wu, Jinwei Ma, Junbao Yu

    Published 2014-01-01
    “…Applied with remote sensing, GIS, and mathematical statistics, the spatial-temporal evolution characteristics of urbanization expansion of Yantai city from 1974 to 2009 was studied. …”
    Get full text
    Article
  20. 20020

    Numerical Simulation of Low-Permeability Reservoirs with considering the Dynamic Boundary Layer Effect by Chuanzhi Cui, Yingfei Sui, Xiangzhi Cheng, Yinzhu Ye, Zhen Wang

    Published 2021-01-01
    “…On this basis, the mathematical model of oil-water two-phase flow which involves influence of the boundary layer was constructed, and the comparative analysis of the development effect is performed. …”
    Get full text
    Article