Showing 20,021 - 20,040 results of 22,513 for search '"mathematics"', query time: 0.09s Refine Results
  1. 20021

    Analysis of the Severity of Accidents on Rural Roads Using Statistical and Artificial Neural Network Methods by Mohammad Habibzadeh, Pooyan Ayar, Mohammad Hassan Mirabimoghaddam, Mahmoud Ameri, Seyede Mojde Sadat Haghighi

    Published 2023-01-01
    “…Finally, the performance of the proposed models was validated utilizing other mathematical models. As a result, putting the output results together, the best measures can be suggested to increase the safety of people on rural roads. …”
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    Article
  2. 20022

    Navigation and Positioning Methods Using Signal of Opportunity of Low Earth Orbit Satellites by ZHANG Yichao, ZHAO Xiangtian, ZHAO Yafei, SUN Yaohua, JIANG Cheng, ZHANG Shijie, PENG Mugen

    Published 2024-12-01
    “…This paper provided a detailed summary of the deployment, signal and frequency characteristics of typical LEO constellations worldwide, and outlined the methods of receiving and processing LEO satellite signals and positioning solutions. A mathematical simulation was conducted on the opportunistic navigation method of LEO satellites, and Doppler positioning and pseudorange positioning methods were compared and analyzed. …”
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  3. 20023

    Nonlinear vibration of wire-wrapped fuel rod subjected to axial flow by Yu Zhang, Pengzhou Li

    Published 2025-01-01
    “…Moreover, the theoretical derivation of this model provides a foundational and dependable mathematical framework to facilitate further research on fretting wear.…”
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  4. 20024

    Influence of Turbulence Model for Wind Turbine Simulation in Low Reynolds Number by Masami Suzuki

    Published 2016-01-01
    “…In designing a wind turbine, the validation of the mathematical model’s result is normally carried out by comparison with wind tunnel experiment data. …”
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  5. 20025

    Simulation of clinical trials of oral treprostinil in pulmonary arterial hypertension using a virtual population by Andrew E. Stine, Jignesh Parmar, Amy K. Smith, Zachary Cummins, Narasimha Rao Pillalamarri, R. Joseph Bender

    Published 2025-01-01
    “…Abstract Challenges in drug development for rare diseases such as pulmonary arterial hypertension can be addressed through the use of mathematical modeling. In this study, a quantitative systems pharmacology model of pulmonary arterial hypertension pathophysiology and pharmacology was used to predict changes in pulmonary vascular resistance and six-minute walk distance in the context of oral treprostinil clinical studies. …”
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    Article
  6. 20026

    LIGHTWEIGHT DESIGN OF A SMALL FAMILY CAR DISC BRAKE BASED ON ANSYS (MT) by WANG SuoGuo, SHEN JingHu, SHI Le

    Published 2023-01-01
    “…Aiming at the lightweight design of the disc brake for small family cars, the finite element analysis and multi-objective optimization of the disc brake were carried out.Through the sensitivity analysis, the contribution degree of each size parameter of the brake disc to the braking performance and quality was established, and the optimization variables were quickly selected.Taking the lightest weight of the brake disc, the lowest surface temperature of the brake disc and the minimum maximum equivalent stress as the objective function, a multi-objective optimization mathematical model was established. NSGA-II hybrid variant algorithm based on the control elite strategy in Ansys was used to optimize the brake disc. …”
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  7. 20027

    The analysis of energy efficiency of LNG filling pipeline from choice of thermal insulation structure by A. M. Andreev, A. Yu. Baranov, E. V. Sokolova, T. A. Malysheva, L. V. Ivanov

    Published 2021-06-01
    “…The article presents the numerical analysis of the energy efficiency for one of the stages of large-scale LNG production, namely, the LNG delivery from a storage tank to a LNG carrier vessel via a cryogenic pipeline. The mathematical model of the thermal enclosure of the pipeline has been considered, and the production cryoproduct losses due to thermal inertia of pipeline materials have been estimated. …”
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  8. 20028

    Modeling MAC Protocol Based on Frame Slotted Aloha for Low Energy Critical Infrastructure Sensor Networks by Niamat Ullah, Kifayat Ullah, S. M. Riazul Islam, Pervaiz Khan, Sana Ullah, Kyung Sup Kwak

    Published 2015-06-01
    “…As the packet drop probability plays crucial role in LECIM applications, we propose framed slotted aloha based MAC for LECIM using linearly increased contention window size to reduce the packet drop probability. We present a mathematical model of our proposed MAC under both saturated and nonsaturated traffic scenarios. …”
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  9. 20029

    Calculation of Liquidus Temperature for Aluminum and Magnesium Alloys Applying Method of Equivalency by Mile B. Djurdjević, Srećko Manasijević, Zoran Odanović, Natalija Dolić

    Published 2013-01-01
    “…The purpose of this paper is to develop a mathematical equation, which will be able to accurately predict the liquidus temperature of various aluminum and magnesium cast alloys on the basis of their known chemical compositions. …”
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  10. 20030

    Analysis of a Flux-Concentrated V-Type Biased-Flux Slot Motor by Mohammad Amirkhani, Ehsan Farmahini Farahani, Mohammad Afrank, Mojtaba Mirsalim, Nick J. Baker

    Published 2025-01-01
    “…This is by virtue of the significant increase in flux concentration in the air gap, which is proven mathematically, via simulation and validated experimentally. …”
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  11. 20031

    A Model for In-Plane Capacity of Multi-Leaf Stone Masonry Walls by Jagat Kumar Shrestha, Sujit Bhandari

    Published 2020-01-01
    “…For the study, a “Standard Wall” with typical properties of a multi-leaf stone masonry wall is defined and the capacity of the stone masonry wall is studied varying different physical and mechanical parameters of the wall to explore an analytical model that can represent the capacity of multi-leaf stone masonry. 300 models of multi-leaf stone masonry panels are analysed in ANSYS, and the capacity and displacement parameters are extracted by bilinearization of the pushover curve. As a result, a mathematical model between the capacity of a multi-leaf stone masonry wall and physical and mechanical properties is established.…”
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  12. 20032

    Digitally twin driven ship cooling pump fault monitoring system and application case by Shaojuan Su, Zhe Miao, Yong Zhao, Nanzhe Song

    Published 2024-01-01
    “…By establishing highly realistic physical and mathematical models and integrating actual operational data, a comprehensive virtual environment was created to simulate the operational status of ship cooling pumps. …”
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  13. 20033

    Modeling, Simulation and Implementation of PV System by Proteus Based on Two-diode Model by Salam Jabr Yaqoob, Adel A. Obed

    Published 2019-12-01
    “…This model is instituted on mathematical equations that describe the analogous to a two diodes PV panel circuit. …”
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  14. 20034

    Optimum Design of Transmission Efficiency of Torus Envelope Arc Cylindrical Worm Pair by Qu Dongyue, Zhang Chunyu, Xu Jian’an, Zhang Rilai

    Published 2018-01-01
    “…Based on the gear meshing principle and the meshing theoretical mathematical model of torus enveloping circular arc worm pair( ZC1),the changing trend of momentary contact line of worm pair is obtained. …”
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  15. 20035

    A CALCULATION METHOD OF EQUIVALENT FAILURE RATE OF VALVE CONSIDERING THE INFLUENCE OF NON-CRITICAL STATE by YU ShuRong, LUO WeiYe, XUE RuiYuan, ZHANG XiHeng, YIN SiMin

    Published 2020-01-01
    “…On this basis,Markov model and mathematical expectation method in probability theory were used to obtain the expected state transition times,and combined with the existence probability of all states. …”
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  16. 20036

    Dynamic Imbalance Analysis and Stability Control of Galloping Gait for a Passive Quadruped Robot by Chunlei Wang, Ting Zhang, Xiaohui Wei, Yongjun Long, Shigang Wang

    Published 2015-01-01
    “…Some imbalance and balance postures of a passive quadruped robot with a simplified mathematical model are studied. Through analyzing the influence of the touchdown angle of the rear leg on the posture of the trunk during the flight phase, the stability criterion is concluded: the closer are the two moments which are the zero time of the pitching angle and the peak time of the center of mass, the better is the stability of the trunk posture during the flight phase. …”
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  17. 20037

    MULTI-OBJECTIVE PARAMETER OPTIMIZATION OF SYNCHRONIZER BASED ON IMPROVED PARTICLE SWARM OPTIMIZATION ALGORITHM by WANG ChunHua, GUO ZhiWei

    Published 2019-01-01
    “…To meet the requirements of shorter synchronization time and higher life for the synchronizer in transmission, mathematical models aiming at synchronization time and synchronizer life were established separately based on Newton’s second law and adhesive wear theory, M-B fractal contact model. …”
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  18. 20038

    Experimentally Determined Solute Mixing under Laminar and Transitional Flows at Junctions in Water Distribution Systems by Yu Shao, Lei Zhao, Y. Jeffrey Yang, Tuqiao Zhang, Miaomiao Ye

    Published 2019-01-01
    “…For cross junctions, the mixing degree is a function of the average Reynolds number in three regions; each has different mixing mechanisms and mathematical relationship. For double-Tee junctions, the dimensionless connecting pipe length plays a more important role than the Reynolds number ratios of outflows and average Reynolds number on mixing because a longer connecting pipe length gives more mixing space and time for the water flow mixing.…”
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  19. 20039

    A New Adaptive Control for Five-Phase Fault-Tolerant Flux-Switching Permanent Magnet Motor by Hongyu Tang, Wenxiang Zhao, Chenyu Gu

    Published 2016-01-01
    “…In this paper, its operation principle is presented briefly and its mathematical model is derived. Further, a new adaptive control for an FT-FSPM motor, based on the backstepping method and the sliding mode control strategy, is proposed. …”
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  20. 20040

    Locating Routing Problem (LRP) of distribution of priority support items to ground forces in war conditions by Milad Abolghasemian, Hamid Bigdeli, Nader Shamami

    Published 2024-08-01
    “…In this research, a mathematical modeling approach is presented to determine efficient locations for deploying support forces using Data Envelopment Analysis (DEA). …”
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