Showing 1,841 - 1,860 results of 2,218 for search '"mathematical models"', query time: 0.08s Refine Results
  1. 1841

    Optimal (Control of) Intervention Strategies for Malaria Epidemic in Karonga District, Malawi by Peter M. Mwamtobe, Shirley Abelman, J. Michel Tchuenche, Ansley Kasambara

    Published 2014-01-01
    “…A deterministic mathematical model with intervention strategies is developed in order to investigate the effectiveness and optimal control strategies of indoor residual spraying (IRS), insecticide treated nets (ITNs) and treatment on the transmission dynamics of malaria in Karonga District, Malawi. …”
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    Article
  2. 1842

    A Three-Phase Bidirectional Grid-Connected AC/DC Converter for V2G Applications by Jingang Han, Xiong Zhou, Song Lu, Pinxuan Zhao

    Published 2020-01-01
    “…Firstly, the configuration of V2G systems is introduced, and the mathematical model of the AC/DC converter is built. Then, for bidirectional AC/DC converters, the grid voltage feedforward decoupling scheme is applied, and the analysis of PI control strategy is proposed and the controller is designed. …”
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    Article
  3. 1843

    Tajikistan’s business sector for years of independence: problems and development models by A. A. Urunov, I. M. Morozova, K. K. Zoidov, M. G. Mansurova

    Published 2023-03-01
    “…The purpose of the study is to develop strategic priorities for the development of the business sector of Tajikistan based on the analysis of the structure of the economy of the republic and its dynamics, as well as the use of economic and mathematical modeling of the object under study. The article identifies the main obstacles to the development of the business sector, including: inefficient functioning of management institutions and the market; insufficient development of human capital; underdeveloped industrial and social infrastructure, as well as the legal framework governing the relations of the state, business, labor, etc. …”
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    Article
  4. 1844

    Multiple-Modal-Coupling Modeling and Stability Analysis of Cold Rolling Mill Vibration by Lingqiang Zeng, Yong Zang, Zhiying Gao

    Published 2016-01-01
    “…According to this mathematical model, the critical rolling speed is determined and the accuracy of calculated results is verified by experimental data. …”
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    Article
  5. 1845

    Opportunities for gas-phase science at short-wavelength free-electron lasers with undulator-based polarization control by Markus Ilchen, Enrico Allaria, Primož Rebernik Ribič, Heinz-Dieter Nuhn, Alberto Lutman, Evgeny Schneidmiller, Markus Tischer, Mikail Yurkov, Marco Calvi, Eduard Prat, Sven Reiche, Thomas Schmidt, Gianluca Aldo Geloni, Suren Karabekyan, Jiawei Yan, Svitozar Serkez, Zhangfeng Gao, Bangjie Deng, Chao Feng, Haixiao Deng, Wolfram Helml, Lars Funke, Mats Larsson, Vitali Zhaunerchyk, Michael Meyer, Tommaso Mazza, Till Jahnke, Reinhard Dörner, Francesca Calegari, Olga Smirnova, Caterina Vozzi, Giovanni De Ninno, Jonas Wätzel, Jamal Berakdar, Sadia Bari, Lucas Schwob, Jérémy R. Rouxel, Shaul Mukamel, Klaus Bartschat, Kathryn Hamilton, Luca Argenti, Nicolas Douguet, Nikolay M. Novikovskiy, Philipp V. Demekhin, Peter Walter

    Published 2025-01-01
    “…This roadmap comprises descriptions of technological capabilities of facilities worldwide, innovative diagnostics and instrumentation, as well as recent scientific highlights, novel methodology, and mathematical modeling. The experimental and theoretical landscape of using polarization controllable FELs for dichroic light-matter interaction in the gas phase will be discussed and comprehensively outlined to stimulate and strengthen global collaborative efforts of all disciplines.…”
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  6. 1846

    Performance Optimization of Unglazed Nanofluid Photovoltaic/Thermal System: Energy and Exergy Analyses by M. Imtiaz Hussain, Jun-Tae Kim

    Published 2018-01-01
    “…Instead of a circular-shaped receiver, a trapezoidal-shaped receiver is employed to increase heat transfer surface area with photovoltaic (PV) cells for improvement of heat extraction and thus achievement of a higher PV/T system efficiency. The dynamic mathematical model is developed using MATLAB® software by considering real-time heat transfer coefficients. …”
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  7. 1847

    Study on the Mechanism of Sparks Generated Mechanical Friction by He Pan, Yang Zhang

    Published 2022-01-01
    “…The result indicates that friction sparks are indeed easier to detonate gas than hot surfaces. Moreover, a mathematical model based on the heat transfer theory is used to prove that the sparks induced by friction from TC4 alloys are more hazardous than those induced by friction from copper and Q235A steel. …”
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    Article
  8. 1848

    Optimum Scheduling the Electric Distribution Substations with a Case Study: An Integer Gaining-Sharing Knowledge-Based Metaheuristic Algorithm by Said Ali Hassan, Khalid Alnowibet, Prachi Agrawal, Ali Wagdy Mohamed

    Published 2020-01-01
    “…To solve the introduced mathematical model, a novel recent gaining sharing knowledge-based algorithm, named GSK, has been used. …”
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    Article
  9. 1849

    How the tulip breaking virus creates striped tulips by Aidan A. Wong, Gustavo Carrero, Thomas Hillen

    Published 2025-01-01
    “…Here, we present a mathematical model to understand how a virus infection of the petals can lead to stripes, thereby providing a possible explanation of a 350 year-old mystery. …”
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  10. 1850
  11. 1851
  12. 1852
  13. 1853

    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. …”
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    Article
  14. 1854

    Computational Fluid Dynamics for Cavity Natural Heat Convection: Numerical Analysis and Optimization in Greenhouse Application by Yin Zhang, Menglong Zhang, Jianwu Xiong, Gang Mao, Yicong Qi

    Published 2023-01-01
    “…In this study, mathematical model is established for two-dimensional heat transfer analysis in greenhouse air cavity, with numerical simulation through computational fluid dynamics (CFD). …”
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  15. 1855

    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 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. …”
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  16. 1856

    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
    “…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). …”
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  17. 1857

    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. …”
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  18. 1858

    Evolution of uncontrolled proliferation and the angiogenic switch in cancer by John D. Nagy, Dieter Armbruster

    Published 2012-09-01
    “…We study a multiscale mathematical model that includes an energy management system in an evolving angiogenic tumor. …”
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  19. 1859

    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. …”
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  20. 1860

    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. …”
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