Showing 2,661 - 2,680 results of 3,115 for search '"mathematical model"', query time: 0.08s Refine Results
  1. 2661

    An Error Tolerated Congestion Control Algorithm Based on Packet Loss Rate Measurement in Deep Space Communication Network by Junrong Yan, Yulong Lu, Peng Pan

    Published 2015-11-01
    “…Congestion control algorithms of TCP protocol previously used in space communications are mostly based on TCP Vegas algorithm.They always require accurately measurement of RTT,but it's very difficult to achieve in deep space communication networks which have very long and variable delay channel characteristics.An errors tolerated congestion control algorithm is proposed based on packet loss rate measurement.The algorithm sends data in the form of data blocks and gives an errors tolerated degree based on the history data.It measures the congestion state based on the current packet loss rate measurement,so it can achieve a smaller overhead and higher transmission efficiency.In addition,the usage of mathematical modeling methods simplifies the networks and simulates the real network traffic.The mentioned algorithm is compared with the classical congestion control algorithm.Analysis and simulation prove that thethroughput of improved algorithm is 34 percent better than Tahoe and 22 percent better than Reno,so it gets a better performance.…”
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  2. 2662

    Towards a long-term model construction for the dynamic simulation of HIV infection by M. Hadjiandreou, Raul Conejeros, Vassilis S. Vassiliadis

    Published 2007-04-01
    “…This study involves the mathematical modelling of long-term HIV dynamics.The proposed model is able to predict the entire trajectory of the disease:initial viremia in the early weeks of the infection, latency, and progressionto AIDS; a range spanning approximately ten years. …”
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  3. 2663

    Dynamics of Unilateral and Bilateral Control Systems with State Feedback for Renewable Resource Management by Mingzhan Huang, Shouzong Liu, Xinyu Song, Lansun Chen

    Published 2020-01-01
    “…In this paper, mathematical models for the management of biological resources based on a given predator-prey relationship are proposed, and two types of control strategies, unilateral and bilateral control with impulsive state feedback, are studied. …”
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    Article
  4. 2664

    Estimation of Disease Transmission in Multimodal Transportation Networks by Yu Zheng

    Published 2020-01-01
    “…Mathematical models are important methods in estimating epidemiological patterns of diseases and predicting the consequences of the spread of diseases. …”
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    Article
  5. 2665

    A Methodical Approach to Design and Valuation of Weather Derivatives in Agriculture by Jindrich Spicka, Jiri Hnilica

    Published 2013-01-01
    “…Design and valuation of the weather derivatives is an interdisciplinary approach covering agrometeorology, statistics, mathematical modeling, and financial and risk management. …”
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    Article
  6. 2666

    Redesign of Conjugate Cam of Rotation Variable Speed Mechanism of Electronic Dobby by Zhang Yuanhua, Gou Xiangfeng, Chen Xiaofang, Wang Zonglu

    Published 2018-01-01
    “…From the angle of the kinematics design,based on the theoretically derivate conjugate cam contour line of mathematic model,the conjugate cam curve equation is redesigned,the equation is solved numerically and the theoretical conjugate cam contour curve is reached out. …”
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    Article
  7. 2667

    Collision detection method for anchor digging machine water drilling rig by Zhi-xiang Liu, Shu-tong Yan, Kang Zou, Miao Xie

    Published 2025-01-01
    “…At the same time, combined with bounding box collision detection technology, the key parts of the equipment are mathematically modeled. A method for collision detection of onboard water exploration and drainage drilling rig of anchor digging machine is proposed. …”
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    Article
  8. 2668

    Constructions of Golomb Costas arrays and their applications in OFDM systems by Jian-guo YAO, Yu-feng WANG, Wei HENG

    Published 2013-07-01
    “…Theory of structures of Golomb Costas arrays with 1-gap row and 1-gap column was established with the study of the properties and mathematical models of Golomb Costas arrays and their families which are obtained by the cyclic shift method. …”
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  9. 2669

    Mechanical properties and failure analysis of PLA/copper composites fabricated by fused deposition modelling by Kumar R.V., Kumar K.R., Soms N.

    Published 2024-01-01
    “…The printer properties, i.e. the Nozzle Temperature and Printing speed, and the processing parameters, i.e. the Layer Thickness and the density of the infill are the most important parameters considered in this study. Mathematical models were developed to predict the strength of the composites as the process parameters were varied. …”
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  10. 2670

    Application and Cutting Machining of Double Disc Milling Cutter by Li Zhijiang

    Published 2016-01-01
    “…For one thing,the change law between the tooth profile allowance and the gear modulus with double,single disc milling type is obtained by establishing the mathematic model of tooth groove allowance of double disk milling. …”
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    Article
  11. 2671

    How and why do neurons generate complex rhythms with various frequencies? by Teresa Ree Chay, Young Seek Lee

    Published 1998-01-01
    “…In the first part of this review, we illustrate that such rhythms can be generated from simple yet elegant mathematical models. Chaos embedded in rhythmic activity has interesting characteristics that are not seen in other physical systems. …”
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  12. 2672
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  15. 2675

    Improving diversification by a hybrid bat-Nelder-Mead algorithm and DDE for rapid convergence to solve global optimization by Enas Suhail, Mahmoud El-Alem, Omar Bazighifan, Ahmed Zekri

    Published 2024-12-01
    “…So, some algorithms contribute to improve mathematical models related to natural life problems and global optimization. …”
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  16. 2676

    Data transmission strategy of P2P pattern live video media streaming system by SUN Zhi-xin1, CHEN Ya-dang1, REN Zhi-guang1

    Published 2011-01-01
    “…An algorithm optimization was made with improved simulated annealing algorithm aimed at data transmission strategy of streaming media system in P2P networks.According with global layout,a mathematic model have been estab-lished for data transmission strategy of streaming media system in P2P networks named VMDTSA-P2P,which com-pletely have considered the affection of both the out-bandwidth and the available time,and take them as the object func-tion for getting the optimum solution.It also optimized the solutions with improved simulated annealing algorithm.Compared with traditional data transmission strategies,this improved algorithm accelerates the speed of new nodes choose the data provider from its partner nodes when there are lots of users and insures the solution of the data provider is approximate the best.Thus,the play delay of the streaming media system is decreased and the quality of video playback is increased.By realizing it in a simulated P2P system,the accuracy and the efficiency were both verified in the simulation.…”
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  17. 2677

    Flight Dynamics Modeling and Dynamic Stability Analysis of Tilt-Rotor Aircraft by Ke Lu, Chunsheng Liu, Chunhua Li, Renliang Chen

    Published 2019-01-01
    “…The aim of this paper is to develop a nonlinear flight dynamics mathematical modeling method of tilt-rotor aircraft and investigate the dynamic stability characteristics of tilt-rotor aircraft. …”
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  18. 2678

    DYNAMIC MODEL OF THE BUDGET OF AN EDUCATIONAL INSTITUTION by Antonina V. Ganicheva, Aleksey V. Ganichev

    Published 2024-12-01
    “…For the study of complex socio-economic systems in a number of cases the method of mathematical modeling is the most acceptable. One of the most famous models in economics is the Keynes model.  …”
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  19. 2679

    Application of Artificial Neural Networks and Adaptive Neuro-Fuzzy Inference Systems to Predict Activated Carbon Properties for Methane Storage by Ali Ahmadpour, Neda Jahanshahi, Sajjad Rashidi, Naser Chenarani, Mohammad Jaber Darabi Mahboub

    Published 2014-04-01
    “…However, because of complex relations between independent and dependent variables, the proposed statistical and mathematical models are not satisfactory. In this paper, the specifications of some ACs synthesized by chemical activation methods are predicted. …”
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  20. 2680

    Optimum renewable oil for biodiesel production as integer programming problem by Lutfu Sagbansua, Figen Balo

    Published 2025-01-01
    “…The aim of the existent research is to choose the optimal plant oil as bio-based diesel through utilizing mathematical modeling technique. Amon plant-based oil kinds, the question of choosing the optimal plant oil is assessed, utilizing many criteria concerned with their features. …”
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