Showing 2,161 - 2,180 results of 2,218 for search '"mathematical modeling"', query time: 0.06s Refine Results
  1. 2161

    Generalization of stochastic mortality models to improve mortality prediction in life insurance and pension funds by Shirin Shoaee, Mohammad Mehdi Gholi Keshmarzi

    Published 2023-09-01
    “…Therefore, the accuracy of mathematical models in predicting mortality rates is an important challenge. …”
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  2. 2162

    Measurements of Periodic Signals Phase Shifts with Application of Direct Digital Synthesis by I. V. Gula, O. I. Polikarovskykh, K. I. Horiashchenko, I. V. Karpova, V. M. Melnychuk

    Published 2019-06-01
    “…The purpose of this work is to create a new phase shift meter for high-frequency periodic signals based on the double-matching method using direct digital frequency synthesis.On the basis of the proposed mathematical model of phase shift measurements of periodic signals by the method of double coincidence using the statistical accumulation of pulse coincidences, a functional diagram of a digital phase shift meter of periodic signals using a direct digital frequency synthesizer is developed. …”
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  3. 2163

    An Investigation on Speed Control of a Spindle Cluster Driven by Hydraulic Motor: Application to Metal Cutting Machines by Ngoc Hai Tran, Cung Le, Anh Dung Ngo

    Published 2019-01-01
    “…The research includes the dynamic modeling of the transmission cluster and the transmission from the hydraulic motor to the working shaft via V-belt mechanism, together with the establishment of a mathematical model and fuzzy self-tuning PID controller model. …”
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    Article
  4. 2164

    Model-Based Variation-Aware Optimization for Offset Calibration and Pre-Sensing in DRAM Sense Amplifiers by Dongyeong Kim, Geon Kim, Suyeon Kim, Jewon Park, Sinwook Kim, Hyeona Seo, Chaehyuk Lim, Sowon Kim, Juwon Lee, Jeonghyeon Yun, Hyerin Lee, Jinseok Park, Yongbok Lee, Seungchan Lee, Myoungjin Lee

    Published 2025-01-01
    “…This article proposes a new mathematical model that accurately predicts statistical margin characteristics of bit-line sense amplifiers (BLSAs) with offset calibration (OC) and pre-sensing (PS), while providing techniques to improve sensing margins. …”
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  5. 2165

    Adsorption of Safranin‐O Dye Onto Almond Shell Sustainable Activated Carbon: Identifying Key Process Factors and Their Effects by Nawras J. Jassim, Fitna H. Younis, Maher T. Alshamkhani

    Published 2025-01-01
    “…A definitive screening design DSC was utilized to quickly examine the impact of six adsorption process factors (initial dye concentration, pH, ionic strength, adsorbent dose, contact time, and ultrasonic power) on the adsorption capacity of safranin dye. A mathematical model was developed to determine the effect of each factor and the contribution and interactions between the factors on the adsorption capacity of safranin dye. …”
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  6. 2166

    An Effective Robust Total Least-Squares Solution Based on “Total Residuals” for Seafloor Geodetic Control Point Positioning by Zhipeng Lv, Guorui Xiao

    Published 2025-01-01
    “…When considering its effect on the mathematical model of GNSS/A underwater positioning, the Total Least-Squares (TLS) estimator can be used to obtain the optimal position estimate of the seafloor transponder, with weak consistency and asymptotic unbiasedness. …”
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  7. 2167

    Evaluating access to psychosocial services for the medicaid-insured children in Georgia by Yujia Xie, Pravara Harati, Janani Rajbhandari-Thapa, Nicoleta Serban

    Published 2025-01-01
    “…We evaluated the availability of services using mathematical models. The outcome measures were met demand and travel distance. …”
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    Article
  8. 2168

    Modelling the Impact of Hygiene and Treatment on the Dynamics of Childhood Diarrhea in Nairobi County, Kenya by Veronicah Nyokabi Njenga, Cyrus Gitonga Ngari, Winifred Mutuku Nduku, Livingstone Serwadda Luboobi

    Published 2024-01-01
    “…The morbidity of children under five years due to diarrhea is very prevalent in Nairobi County. Mathematical models can be used to study the dynamics of infections and suggest possible control strategies in the process. …”
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    Article
  9. 2169

    Optimizing the selection of quantitative traits in plant breeding using simulation by Rafael Augusto Vieira, Ana Paula Oliveira Nogueira, Roberto Fritsche-Neto

    Published 2025-02-01
    “…Simulations use mathematical models to replicate biological conditions, bridging theory and practice by validating hypotheses early and optimizing genetic gain and resource use. …”
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  10. 2170

    Using Milk Urea Nitrogen to Evaluate Diet Formulation and Environmental Impact on Dairy Farms by J.S. Jonker, R.A. Kohn

    Published 2001-01-01
    “…The objectives of this review are to examine the use of milk urea nitrogen (MUN) to measure N excretion and utilization efficiency in lactating dairy cows and to examine impacts of overfeeding N to dairy cows in the Chesapeake Bay drainage basin. A mathematical model was developed and evaluated with an independent literature data set to integrate MUN and milk composition to predict urinary and fecal excretion, intake, and utilization efficiency for N in lactating dairy cows. …”
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  11. 2171

    Multifield Coupling Mechanism of Unloading Deformation and Fracture of Composite Coal-Rock by Zhen Yang, Yan Li, Xin Li, Jiayu Zhuang, Hao Li, Xue Wang, Yuning Wang

    Published 2021-01-01
    “…To solve the problem, this paper combines interdisciplinary theories such as damage mechanics and electromagnetic field theory. The mathematical model of multiphysics coupling during loading and unloading of composite coal-rock is deduced. …”
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  12. 2172

    Modeling Ebola Virus Disease transmissions with reservoir in a complex virus life ecology by Tsanou Berge, Samuel Bowong, Jean Lubuma, Martin Luther Mann Manyombe

    Published 2018-01-01
    “…We propose a new deterministic mathematical model for the transmission dynamics of Ebola Virus Disease (EVD) in a complex Ebola virus life ecology. …”
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  13. 2173

    Wastewater-based estimation of temporal variation in shedding amount of influenza A virus and clinically identified cases using the PRESENS model by Hiroki Ando, Michio Murakami, Masaaki Kitajima, Kelly A. Reynolds

    Published 2025-01-01
    “…In this study, we applied two mathematical models to previously collected wastewater and clinical data from four U.S. states during the 2022/2023 influenza season, dominated by the H3N2 subtype. …”
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  14. 2174

    Design and Test of Combined Air Suction Cotton Breed Seeder by Yudao Li, Zhanhua Song, Fade Li, Yinfa Yan, Fuyang Tian, Xuezhen Sun

    Published 2020-01-01
    “…This paper concludes that the coefficient of variation is small when the velocity is 1.2–1.5 m/s and finds the optimal range of unit velocity when sowing and finally builds the mathematical models including multiples index and missing index. …”
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  15. 2175

    Transparent memory tests with even repeating addresses for storage devices by V. N. Yarmolik, I. M. Mrozek, V. A. Levantsevich, D. V. Demenkovets

    Published 2021-09-01
    “…The urgency of the problem of memory testing of modern computing systems is shown. Mathematical models describing the faulty states of storage devices and the methods used for their detection are investigated. …”
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  16. 2176

    Modelling the Transmission Dynamics of Meningitis among High and Low-Risk People in Ghana with Cost-Effectiveness Analysis by Nicholas Kwasi-Do Ohene Opoku, Reindorf Nartey Borkor, Andrews Frimpong Adu, Hannah Nyarkoah Nyarko, Albert Doughan, Edwin Moses Appiah, Biigba Yakubu, Isabel Mensah, Samson Pandam Salifu

    Published 2022-01-01
    “…Thus, this article develops a mathematical model that ascertains the dynamics involved in meningitis transmissions by partitioning individuals into low- and high-risk susceptible groups. …”
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  17. 2177

    Establishment of Microwave Drying Dynamic Model for Foshou Leaves Powder and Analysis of Quality Characteristics by Hui SUN, Bo ZHANG, Jianghong ZHOU, Zhenyi XU, Zhixing MAO, Yuxiang WANG, Jie PANG

    Published 2025-02-01
    “…Through the comparison of three mathematical models to simulate drying kinetics, a nonlinear relationship between the moisture ratio of Foshou leaves and the drying time was observed. …”
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  18. 2178

    Using new control strategies to improve the effectiveness and efficiency of the hybrid power system based on the battery storage system by Karima Boutaghane, Habib Benbouhenni, Nedjoua Bennecib, Ilhami Colak, Z. M. S. Elbarbary, Saad F. Al-Gahtani

    Published 2025-02-01
    “…These proposed strategies do not need the mathematical model of the studied system and augment the robustness and stability, where the system performance is great. …”
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  19. 2179

    Particle Flow Analysis of Macroscopic and Mesoscopic Failure Process of Salt Rock under High Temperature and Triaxial Stress by Haoran Li, Ziheng Wang, Dekang Li, Yajun Zhang

    Published 2021-01-01
    “…From the three different mathematical models of macroscopic and mesoscopic views, it is concluded that the effect of temperatures on salt rock is more significant after 90°C. …”
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  20. 2180