Showing 20,221 - 20,240 results of 22,513 for search '"Mathematics"', query time: 0.16s Refine Results
  1. 20221

    DYNAMIC RESPONSES OF THE ELECTRICAL MEASURING SENSOR AND THE SIMPLY-SUPPORTED BEAM WITH TRANSVERSE MOVING LOAD by LIN Yun, BAI Yun

    Published 2015-01-01
    “…In this paper,the definite mathematical model was proposed before hand; and the model can be divided into two sub-problems considering of the linearity of the problem,then the method of separation of variables and the inherent function method were used to give the theoretical solutions respectively,an numerical example were introduced to give the deflection responses and the stress responses of the simply-supported beam and the dynamic responses of the capacitor of the sensor in order to illustrate the important effects of the dynamic effects. …”
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    Article
  2. 20222

    An Experimental Realization of a Chaos-Based Secure Communication Using Arduino Microcontrollers by Mauricio Zapateiro De la Hoz, Leonardo Acho, Yolanda Vidal

    Published 2015-01-01
    “…In this paper we propose a digital-based communication system that uses the logistic map which is a mathematically simple model that is chaotic under certain conditions. …”
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    Article
  3. 20223

    Research of temperature destruction effect on cables insulation operation life by V. N. Pugach, D. A. Polyakov, K. I. Nikitin, N. A. Tereshchenko, I. V. Komarov

    Published 2019-12-01
    “…The article describes the thermal aging of insulating materials of low-voltage cables and its effect on their service life. The wellknown mathematical models of insulation aging dependence on temperature are considered. …”
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  4. 20224

    Extraction of Weak Scatterer Features Based on Multipath Exploitation in Radar Imagery by Muhannad Almutiry, Lorenzo Lo Monte, Michael C. Wicks

    Published 2017-01-01
    “…The second problem is linearizing the mathematical forward model in the measurement domain. …”
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  5. 20225

    Quantum tug of war between randomness and symmetries on homogeneous spaces by Rahul Arvind, Kishor Bharti, Jun Yong Khoo, Dax Enshan Koh, Jian Feng Kong

    Published 2025-01-01
    “…We then introduce the Haar measure on the homogeneous space U/H, characterizing true randomness for H-equivalent systems. While this mathematical machinery is well studied by mathematicians, it has seen limited application in quantum information. …”
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  6. 20226

    Analysis of Bio-Sorption of Cr(VI) onto Raw Rice Husk by a Hybrid Theoretical Model Using Results of Batch Experiments by Debasish Sarkar, Sudip K Das, Amitava Bandyopadhyay

    Published 2013-08-01
    “…Experimental results follow the Langmuir adsorption isotherm reasonably well. A hybrid mathematical model that takes into account the shrinking core approach coupled with the well-known progressive conversion model has been proposed to simulate the dynamic behaviour of the present system using the results obtained from the batch adsorption experiments. …”
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  7. 20227

    Models, systems, networks in economics, engineering, nature and society by S.I. Noskov, E.S. Popov

    Published 2024-11-01
    “…To achieve this goal, the mathematical apparatus for solving linear and linear Boolean programming problems was used. …”
    Article
  8. 20228

    Research on HILS Technology Applied on Aircraft Electric Braking System by Suying Zhou, Hui Lin, Bingqiang Li

    Published 2017-01-01
    “…Using this method, a detailed mathematical modeling of system is proposed first. Studies on reducing sampling time with model simplification and modeling for applying to I/O interface of DSP and HILS are conducted. …”
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  9. 20229

    Research of the Traction Control of Flexible Work Surface Belt Drive of Heavy Duty Construction Vehicle by Lou Jie

    Published 2015-01-01
    “…To reduce the energy consumption of heavy duty construction vehicle pollution,and improve the capacity of the complex conditions of the vehicle,the multi-metal complex with stepless transmission and front / rear axle torque distribution device in the traditional drive system are imported,a new mathematical model of heavy duty four-wheel heavy duty construction vehicle is established,finally,a four-wheel drive heavy duty construction vehicle traction integrated control strategy is obtained.The results show that large ratio change conditions required for the engine reaches maximum speed of the longest and highest speed reached a minimum;small ratio change conditions can achieve high speed,the speed curve more smooth and steady acceleration phase speed change under the conditions of large ratio rate change;after the introduction of traction control system,slip phenomenon can be well suppressed over a driving wheel,the drive wheel speed control range of the space in the target vehicle speed.…”
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  10. 20230

    Optimizing Cutting Conditions and Prediction of Surface Roughness in Face Milling of AZ61 Using Regression Analysis and Artificial Neural Network by Nabeel H. Alharthi, Sedat Bingol, Adel T. Abbas, Adham E. Ragab, Ehab A. El-Danaf, Hamad F. Alharbi

    Published 2017-01-01
    “…Regression analysis was also used to build a mathematical model representing the surface roughness as a function of the process parameters. …”
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  11. 20231

    Stochastic model of economic cycles and its econometric application by Karmalita Viacheslav

    Published 2024-12-01
    “…Thus, the economic cycle is interpreted as the 'natural noise' accompanying the functioning of market economics.The proposed model creates a mathematical basis for the numerical analysis of empirical economic data. …”
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  12. 20232

    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

    Published 2025-01-01
    “…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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  13. 20233

    基于面心组合的排气歧管响应曲面优化设计 by 刘伟, 张勇, 程天才, 王海燕

    Published 2021-01-01
    “…In order to solve the limitations caused by the engine exhaust manifold structure optimization which usually adopts single factor control variable method or orthogonal test leading to the insignificant parameter interaction,the face centered combination method in the central composite design is used to respond to surface optimization,taking the engine exhaust manifold of a heavy chemical vehicle as the research object,the exhaust 38 groups of manifold structural parameters finish the fast matching,the mathematical model is established and polynomial response regression equation is concluded,fitting out of the exhaust manifold optimum structural parameters and corresponding flow uniformity index,additionally,the results of response surface optimization is verified by the numerical simulation.The results show that when the four branches are combined,the optimal structure fluid flow uniformity index of the exhaust manifold by the response surface method based on the face centered combination way is improved from the original 0.76 to 0.82,which is 6% higher than the initial structure.…”
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  14. 20234

    Numerical simulation and industrial practice of inclusion removal from molten steel by gas bottom-blowing in continuous casting tundish by Meijie Z., Huazhi G., Ao H., Hongxi Z., Chengji D.

    Published 2011-01-01
    “…The residence time distribution (RTD) of molten steel in the tundish was calculated by mathematical modeling. The content of small size inclusions in the slab was analyzed using a oxygen probing and metallographic images. …”
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  15. 20235

    Pin Row Loading Analysis of Scraper Conveyor under Oblique Cut Condition by Mao Jun, Tian Song, Chen Hongyue

    Published 2016-01-01
    “…According to the force analysis of roller,the equation set of roller in the process of cutting by three- axis force is derived.Combining the MATLAB programming,the curve of the before and after roller load changing with the rotation angle under the oblique cut condition is obtained.With shearer machine as the research object,the whole machine mechanical equation is listed,the mathematical computing model is established.Based on MATLAB programming,combining with the before and after roller load changing curve under the oblique cut condition,the before and after sliding shoe load curves under the oblique cut condition is obtained.Due the contact relation between the sliding shoe and pin row and the principle of force mutual action,the curve of load acting on the pin rows under the oblique cut condition is achieved.And through the ANSYS Workbench simulation analysis,the stress distribution and deformation of pin rows of scraper conveyor are got.A reference for the future of design and analysis of damage causes of scraper conveyor pin row is provided.…”
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  16. 20236

    Effect of Fast Freeze-Thaw Cycles on Mechanical Properties of Ordinary-Air-Entrained Concrete by Huai-shuai Shang, Wei-qun Cao, Bin Wang

    Published 2014-01-01
    “…The effects of fast freeze-thaw cycles on the mechanical properties (compressive strength and cleavage strength) of ordinary-air-entrained concrete materials are investigated on the basis of the experimental results. And the concise mathematical formula between mechanical behavior and number of fast freeze-thaw cycles was established. …”
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  17. 20237

    Investigation on Dynamic Recrystallization Behavior of Martensitic Stainless Steel by Facai Ren, Fei Chen, Jun Chen

    Published 2014-01-01
    “…The hot deformation behavior of X20Cr13 martensitic stainless steel was studied using the hot compression flow curves corresponding to the temperature range of 900–1150°C under strain rates from 0.01 to 10 s−1. A new mathematical model to estimate the flow stress under hot deformation conditions up to the peak of the flow curves was developed. …”
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  18. 20238

    Evaluation of the Response of Posttensioned Steel Frames with Energy Dissipators Using Equivalent Single-Degree-of-Freedom Systems by J. Luz Rivera, Arturo López-Barraza, Sonia E. Ruiz, Alfredo Reyes-Salazar

    Published 2014-01-01
    “…Five multi-degree-of-freedom (MDOFS) PTSF and their corresponding ESDOFS are studied under the action of 30 seismic motions recorded in soft ground, scaled in terms of the spectral pseudoacceleration evaluated at the fundamental period of the structures. Several simple mathematical expressions are proposed. The first expression is useful to calculate modifying factors (FMEH) to relate EH of the ESDOFS with that of the MDOFS; the second is to determine the interstory drift (γ) as a function of the seismic intensity. …”
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  19. 20239

    Estimation of Tabriz population based on exponential and logistic growth models for water scarcity analysis by Saeed Imani, Yagob Dinpashoh, Esmaeil Asadi, Ahmad Fakheri Fard

    Published 2024-12-01
    “…Therefore, in this research, a specific mathematical equation is introduced for predicting the Tabriz population in the future and two linear and quadratic equations are introduced for water consumption demand. …”
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  20. 20240

    Performance Analysis of Reheat Steam Temperature Control System of Thermal Power Unit Based on Constrained Predictive Control by Xiaoli Li, Jian Liu, Kang Wang, Fuqiang Wang, Yang Li

    Published 2019-01-01
    “…Firstly, the process and mathematical model of reheat steam temperature control system are introduced. …”
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