Showing 21,181 - 21,200 results of 22,513 for search '"mathematics"', query time: 0.13s Refine Results
  1. 21181

    Teaching-learning of the "family" content in the General Practitioner’s training from education at work by Mabel Rocha Vázquez, Josè Aurelio Dìaz Quiñones, Norma Mur Villar

    Published 2023-07-01
    “…Methods were applied at the empirical, theoretical and mathematical sta-tistical levels that as a whole allowed achieving the expected objective. …”
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    Article
  2. 21182

    Three dimensional analysis of dental arch form and dimensions in a sample of Kurdish students in Hawler Medical University. by Barzan Mahmood, Bayan Hassan

    Published 2023-06-01
    “…Methods: The sample consisted of 3D scans by the intra-oral scanner of maxillary and mandibular dental arches deriving from 111 Kurdish medical students (Male = 51, Female = 60) in permanent dentition. the arch form was evaluated by linear values and ratios by mathematical calculation on every patient using a 3shap ortho analyzer software .paired t-test and fisher's exact Test were used to determine if the differences in measurements between maxillary, mandibular, male, and female groups were significant. …”
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    Article
  3. 21183

    Optimization of Teaching Evaluation System for Football Professional Teachers Based on Multievaluation Model by Zhiqiang Chen, Qingguo Chen

    Published 2021-01-01
    “…We introduced the standard PSO algorithm, including mathematical forms, iteration steps, and flowcharts. …”
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    Article
  4. 21184

    Comparative study of parameter extractions of photovoltaic modules using analytical and numerical approaches by Brahim Belmahdi

    Published 2025-01-01
    “…Developing an accurate mathematical model for parameter extraction in photovoltaic modules is a crucial endeavor in optimizing photovoltaic energy systems. …”
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    Article
  5. 21185

    Study of a fixed-bed column in the adsorption of an azo dye from an aqueous medium using a chitosan–glutaraldehyde biosorbent by Jaime López-Cervantes, Dalia I Sánchez-Machado, Reyna G Sánchez-Duarte, Ma A Correa-Murrieta

    Published 2018-02-01
    “…The breakthrough curve was analyzed using the Adams–Bohart, Thomas, and bed depth service time mathematical models. The behaviors of the breakthrough curves were defined by the Thomas model at different conditions. …”
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    Article
  6. 21186

    Factor’s Influence Analysis of Frost Heave during the Twin-Tunnel Construction Using Artificial Horizontal Ground Freezing Method by Rong-bao Hong, Hai-bing Cai, Meng-kai Li, Ya-ru Li

    Published 2020-01-01
    “…However, the trough of the bimodal M-type curve gradually disappears as the tunnel buried depth increases. SPSS mathematical analysis results show that tunnel clear distance has the highest significance, tunnel buried depth ranks the second, and freezing order ranks the last. …”
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    Article
  7. 21187

    Theoretical Analysis and Experimental Validation on Galloping of Iced Transmission Lines in a Moderating Airflow by Bing Huo, Xuliang Li, Fujiang Cui, Shuo Yang

    Published 2021-01-01
    “…Different declining rates of the wind velocity are also verified in the wind tunnel, which show good agreement with the results simulated by the mathematical model. The sudden increase in the galloping amplitude poses a significant threat to the transmission system, which also improves the damage mechanism associated with the galloping of a slender, a long structure with a noncircular cross-section.…”
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    Article
  8. 21188

    Automatic incident detection in smart city using multiple traffic flow parameters via V2X communication by Zafar Iqbal, Majid Iqbal Khan

    Published 2018-11-01
    “…The complete algorithm is mathematically described using the notions of set theory and then formal analysis assures that the algorithm would be less susceptible to runtime and logical errors during simulations.…”
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    Article
  9. 21189

    Influence of Tianjiaotan Hydraulic Project on Ecology of Mangrove Forest in Xinying Bay by WEN Jizhou, ZHAO Guanghui, WANG Lang, ZHANG Zhiguang, ZHANG Shalong, LI Mei

    Published 2023-01-01
    “…The construction and operation of Tianjiaotan Reservoir have changed the hydrological characteristics of Beimen River channel under the dam and affect the area of dilution zone,salinity,saltwater intrusion distance,and sediments in Beimen River estuary,which will further affect the growth and reproduction of the mangrove forest in Xinying Bay.This article investigates the current ecological status of the mangrove forest in Xinying Bay of Beimen River and establishes a mathematic model for planar two-dimensional salinity diffusion in Beimen River estuary by adopting three key factors affecting the growth and reproduction of the mangrove forest,such as the area of dilution zone,salinity,and saltwater intrusion distance.In addition,the article analyzes the influence of Tianjiaotan hydraulic project on the ecology of the mangrove forest.The results show that the salinity change of the estuary has little effect on the adult plants in the mangrove forest (with growth stress mainly observed) but limits the growth and development of seedlings.The increase in saltwater intrusion distance in the flood season can stimulate the upward development of the mangrove forest along the river;the decrease in the area of dilution zone in Xinying Bay may change the structure of the mangrove community in the estuary in a way that benefits the growth of salt-tolerant mangrove plants such as Avicennia marina and Rhizophora stylosa and affects the growth and development of salt-intolerant mangroves plants.The research results can provide a theoretical basis for the ecological conservation of the mangrove forest in Xinying Bay.…”
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    Article
  10. 21190

    Prediction of Tool Lifetime and Surface Roughness for Nickel-Based Waspaloy by Shao-Hsien Chen, Chung-An Yu

    Published 2020-01-01
    “…Finally, a set of mathematical models can be established based on these results, in order to predict the surface roughness of Waspaloy cut with a worn tool. …”
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    Article
  11. 21191

    Priority areas of support for small and medium-sized enterprises within the framework of innovation policy by S. V. Simonov, V. S. Osipov

    Published 2023-12-01
    “…In the course of the study, using mathematical and statistical methods, analysis, and synthesis. …”
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    Article
  12. 21192

    Measures to reduce enviromental risk on transport in the regions by A. A. Bychkova

    Published 2021-10-01
    “…The analysis of emissions has been carried out based on data from the Federal Service for Supervision of Natural Resources Management (Rosprirodnadzor) using empirical and mathematical, statistical methods. A brief description of the method of calculation of evaporation from transport has been given. …”
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    Article
  13. 21193

    Health Assessment of Foundation Pit Based on the Fuzzy Analytical Hierarchy Process by Jinbo Sun, Ke Sun, Liang Gong, Sheng Gu, Hao Hao

    Published 2022-01-01
    “…Combined with the fuzzy mathematical method, the membership functions of four health degree levels (A to D) are constructed, and the determination range of each health degree level is given to realize the quantitative calculation of the health condition from the bottom-level assessment factor to the overall foundation pit. …”
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    Article
  14. 21194

    Unsupervised deep learning method for single image super-resolution of the thick pinhole imaging system using deep image prior by Guoguang Li, Liang Sheng, Baojun Duan, Yang Li, Dongwei Hei, Qingzi Xing

    Published 2025-01-01
    “…The point spread function (PSF) of the imaging system is obtained by analytical calculation and Monte Carlo simulation methods, and the mathematical model of the imaging system is established using a linear equation. …”
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    Article
  15. 21195

    Impact of media coverage on the transmission dynamics of TB with vaccines and treatment. by Kumneger Tadesse Mulugeta, Mohammed Yiha Dawed, Shewafera Wondimagegnhu Teklu

    Published 2025-01-01
    “…The main objective of this study is to investigate the impact of media coverage on the transmission dynamics of TB with vaccine and treatment strategy using mathematical model analysis. In the qualitative analysis of the proposed model we proved the existence, uniqueness, positivity, and boundedness of the model solutions, investigated both the disease-free and endemic equilibrium points, computed the basic and effective reproduction numbers using next generation matrix approach, analyzed the stability analysis of the equilibrium points, the backward bifurcation using the Castillo-Chavez and Song theorem and we re-formulated the corresponding optimal control problem and analyzed by applying the Pontryagin's Minimum Principle. …”
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  16. 21196

    Enhanced Production of Xylitol from Corncob by Pachysolen tannophilus Using Response Surface Methodology by S. Ramesh, R. Muthuvelayudham, R. Rajesh Kannan, T. Viruthagiri

    Published 2013-01-01
    “…The optimal levels of these variables were quantified by the central composite design using RSM, for establishment of a significant mathematical model with a coefficient determination of . …”
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    Article
  17. 21197

    Safety Evaluation for Highway Geometric Design Based on Spatial Path Properties by Lu Wang

    Published 2023-01-01
    “…First, these combinations of horizontal and vertical alignments were categorized into six classifications, each with its own spatial expression in mathematical form. After manipulating the curvature and torsion of the spatial curve algebraically, the correlation between geometric design variables and crash rate was ultimately established. …”
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  18. 21198

    Fuzzy Sliding Mode Control of Plate Vibrations by Manu Sharma, S.P. Singh

    Published 2010-01-01
    “…Finite element method is used to obtain mathematical model of the test plate. A design approach of a sliding mode controller for linear systems with mismatched time-varying uncertainties is used in this paper. …”
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    Article
  19. 21199

    Retrospective analysis and forecasting of the spread of viruses in real time: the case of COVID-19 in St. Petersburg and Moscow in 2020–2021 by Victor V. Zakharov, Yulia E. Balykina

    Published 2024-12-01
    “…The aim of the study is to apply mathematical methods to generate forecasts of the dynamics of random values of the percentage increase in the total number of infected people and the percentage increase in the total number of recovered and deceased patients. …”
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    Article
  20. 21200

    Mixed Integer Linear Programming Based Speed Profile Optimization for Heavy-Haul Trains by Huazhen Yu, Yihui Wang, Andrea D’Ariano, Anzheng Lai, Youneng Huang

    Published 2023-01-01
    “…In this paper, a discrete-time-based mathematical formulation is proposed to address the speed profile optimization problem in order to ensure the safe, efficient, and economical operation of heavy-haul trains (HHTs). …”
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    Article