Showing 21,841 - 21,860 results of 22,513 for search '"mathematics"', query time: 0.13s Refine Results
  1. 21841

    A comparison of Bayesian and frequentist confidence intervals in the presence of a late Universe degeneracy by Eoin Ó. Colgáin, Saeed Pourojaghi, M. M. Sheikh-Jabbari, Darragh Sherwin

    Published 2025-02-01
    “…Projected 1D posteriors for $$\Lambda $$ Λ CDM cosmological parameters become more non-Gaussian with increasing effective redshift when the model is fitted to redshift-binned data in the late Universe. We explain mathematically why this non-Gaussianity arises and show, using observational Hubble data (OHD), that Markov chain Monte Carlo (MCMC) marginalisation leads to 1D posteriors that fail to track the $$\chi ^2$$ χ 2 minimum at $$68\%$$ 68 % confidence level in high redshift bins. …”
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  2. 21842

    Application of information technologies for automation management of environmental activity by V. A. Rybak, A. D. Grib, Sh. Ahmad

    Published 2019-12-01
    “…For industries and technologies that do not fall into the category of rational from the point of view of environmental management, a mathematical model of their optimization has been developed with the selection of specific environmental protection measures. …”
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    Article
  3. 21843

    A Multiobjective Model for a Multilevel Blood Supply Chain to Improve the Attractiveness of Blood Centers during the COVID-19 Pandemic by Abolfazl Moghimi Esfandabadi, Davood Shishebori, Mohammad-Bagher Fakhrzad, Hassan Khademi Zare

    Published 2024-01-01
    “…In order to minimize the costs of the entire supply chain network and maximize the attractiveness of the BCCs, a two-objective mathematical model is developed. It produces Pareto solutions using the ε-constraint method. …”
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  4. 21844

    Esterification of Oleic Acid for Biodiesel Production Using a Semibatch Atomization Apparatus by Marcell S. Deus, Katherine C. O. Deus, Daniel S. Lira, Jackson A. Oliveira, Carlos E. A. Padilha, Domingos F. S. Souza

    Published 2023-01-01
    “…The size of droplets was determined by computational image processing. A mathematical model was also developed to describe the conversion of oleic acid to ethyl ester as a function of molar concentration of components and operating conditions of the reactor. …”
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    Article
  5. 21845

    Characterising the scale-up and performance of antiretroviral therapy programmes in sub-Saharan Africa: an observational study using growth curves by Benjamin Bigelow, Stéphane Verguet

    Published 2020-09-01
    “…Growth curves are a class of mathematical models that can parameterise dynamic phenomena and estimate rates of change summarising these phenomena; however, they are not commonly used in global health. …”
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  6. 21846

    A dynamical model of drinking and smoking with optimal control analysis. by Fredrick Asenso Wireko, Sebastian Ndogum, Botchew Abdul Nasiru, David Ansah-Asamoah, Isaac Kwasi Adu, Joshua Kiddy K Asamoah

    Published 2024-01-01
    “…To study this, we present a mathematical model that investigates the co-dynamics of alcohol drinking and tobacco smoking, as well as some control strategies. …”
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  7. 21847

    Research on vehicle scheduling for forest fires in the northern Greater Khingan Mountains by Jie Zhang, Junnan He, Shihao Ren, Pei Zhou, Jun Guo, Mingyue Song

    Published 2025-01-01
    “…Abstract In the face of forest fire emergencies, fast and efficient dispatching of rescue vehicles is an important means of mitigating the damage caused by forest fires, and is an effective method of avoiding secondary damage caused by forest fires, minimizing the damage caused by forest fires to the ecosystem, and mitigating the losses caused by economic development. this paper takes the actual problem as the starting point, constructs a reasonable mathematical model of the problem, for the special characteristics of the emergency rescue vehicle scheduling problem of forest fires, taking into account the actual road conditions in the northern pristine forest area, through the analysis of the cost of paths between the forest area and the highway, to obtain the least obstructed rescue paths, to narrow the gap between the theoretical model and the problem of the actual. …”
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  8. 21848

    Pediatric and adolescent chronic myeloid leukemia: A follow-up study in Western India by Sangita A. Vanik, Dhaval Jetly, Biren Parikh, Karthik Dhandapani, Rukmini Bezbaruah

    Published 2023-07-01
    “…The treatment response was monitored and scoring was performed using mathematical calculations. Results: The mean age was 11.6 (±4.7) years. …”
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  9. 21849

    Smart homes energy management: Optimal multi-objective appliance scheduling model considering electrical energy storage and renewable energy resources by Moslem Dehghani, Seyyed Mohammad Bornapour

    Published 2025-02-01
    “…Also, in the proposed mathematical formulation, the bought and selling energy is considered during the day. …”
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  10. 21850

    Flanking monomer repeats define lower context complexity of sites containing single nucleotide polymorphisms in the human genome by N. S. Safronova, M. P. Ponomarenko, I. I. Abnizova, G. V. Orlova, I. V. Chadaeva, Y. L. Orlov

    Published 2016-01-01
    “…The changes in point mutation frequency were shown previously for microsatellite containing sequences. Using enhanced mathematical tools and larger data sets this work shows enrichment of polytracks and simple sequence repeats in local genome surroundings of SNP containing sites. …”
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  11. 21851

    DEVELOPMENT AND ADAPTATION OF VORTEX REALIZABLE MEASUREMENT SYSTEM FOR BENCHMARK TEST WITH LARGE SCALE MODEL OF NUCLEAR REACTOR by S. M. Dmitriev, A. E. Khrobostov, A. A. Barinov, V. G. Glavny

    Published 2017-09-01
    “…The use of such programs to justify technical and economic parameters and especially the safety of nuclear reactors requires comprehensive verification of mathematical models and CFD programs. The aim of the work was the development and adaptation of a measuring system having the characteristics necessary for its application in the verification test (experimental) facility. …”
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  12. 21852

    Ecosystem of structural and technological development: restarting growth of firms and entrepreneurial factor by V. V. Spitsin, L. Yu. Spitsina, M. A. Hasanov, S. N. Popova

    Published 2024-09-01
    “…Using economic and mathematical methods, we have assessed the rate of revenue growth and examined the influence of the enterprise manager’s personality on the transition to the growth in the context of formed groups of companies. …”
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  13. 21853

    Dynamical Hybrid System for Optimizing and Controlling Efficacy of Plant-Based Protein in Aquafeeds by Serge Dossou, Mahmoud A. O. Dawood, Amr I. Zaineldin, Ibrahim A. Abouelsaad, Kumbukani Mzengereza, Ronick S. Shadrack, Yukun Zhang, Mohamed El-Sharnouby, Hamada A. Ahmed, Mohammed F. El Basuini

    Published 2021-01-01
    “…In this paper, a mathematical model was used to evaluate a dynamical hybrid system for optimizing and controlling the efficacy of plant-based protein in aquafeeds. …”
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  14. 21854

    Changes in oat grain yield and quality with increased adaptability of cultivars by P. N. Nikolaev, O. A. Yusova, I. V. Safonova, N. I. Aniskov

    Published 2020-06-01
    “…Pleshkov and N. S. Berkutova. Mathematical processing was performed following the guidelines by B. …”
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  15. 21855

    Energy Performance-Oriented Multi-Objective Optimization of Spatial Form of High-Rise Residential Blocks in the Changsha Region by Wenhao Huang, Fang Tian, Tengfei Huang

    Published 2024-12-01
    “…This study selects 164 high-rise residential blocks in the Changsha area as the research object and constructs three multi-objective optimization frameworks and mathematical models for the spatial form of high-rise residential blocks based on the Rhino and Grasshopper parametric platform. …”
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  16. 21856

    Control system for noise-resistant electronic speed controller of a brushless electric motor for an unmanned aerial vehicle by M. V. Parinov, A. N. Yurov, Ya. V. Skitskiy

    Published 2024-02-01
    “…The requirements for microcontrollers to create the various types of speed controllers are formalized herein and presented in the form of a set of mathematical expressions. They enable the number of required peripheral devices and microcontroller ports to be calculated according to the requirements for the microcontroller, as well as the computing power of the core used.Conclusions. …”
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  17. 21857

    Durable resistance or efficient disease control? Adult Plant Resistance (APR) at the heart of the dilemma by Rimbaud, Loup, Papaïx, Julien, Rey, Jean-François, Moury, Benoît, Barrett, Luke G., Thrall, Peter H.

    Published 2023-05-01
    “…As a case study, the mathematical model has been parameterised for rust fungi (genus Puccinia) of cereal crops, for which extensive data are available. …”
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  18. 21858

    Numerical Optimization of Drilling Parameters for Gas Predrainage and Excavating-Drainage Collaboration on Roadway Head by Mingkun Luo, Lei Yang, Haiou Wen, Dongsheng Zhao, Kun Wang

    Published 2022-01-01
    “…Assuming that the coal mass has a dual pore structure with fractures and pores, a multiphysical field coupling mathematical model is proposed for gas drainage. The governing equations of gas adsorption, seepage, and diffusion are considered. …”
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  19. 21859

    Productivity Analysis Using the Multi Factor Productivity Measurement Model (MFPMM) as an Effort to Increase Competitiveness (Case Study: WL Alumunium Yogyakarta) by Grita Supriyanto Dewi, Khairun Nadiyah

    Published 2023-02-01
    “…The results of the mathematical equation using Multiple Linear regression are profitability (Y): -0.952+ 1.001 productivity (x1) + 0.951 price recovery (x2). …”
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  20. 21860

    Psychological and gender specific correlates of aggressive behaviour in military personnel by Ya. S. Ponomarenko, N. V. Hresa, V. M. Filonenko

    Published 2024-06-01
    “…Bass and A. Darkey. The mathematical and statistical processing of the results was carried out using Student's t-test for independent samples and Fisher’s angular transformation criterion (φ). …”
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