Математика и физика. Mathematics & Physics. 2023 16 (5)

 

Ресурсы коллекции

  • Drift of a Free-floating Body in a Convective Layer Heated by Radiation 

    Vasiliev, Andrei Yu.; Popova, Elena N.; Frick, Peter G.; Sukhanovskii, Andrei N.; Васильев, Андрей Ю.; Попова, Елена Н.; Фрик, Петр Г.; Сухановский, Андрей Н. (Сибирский федеральный университет. Siberian Federal University, 2023-10)
    The one-dimensional dynamics of a disk floating freely at a fixed depth in a layer of liquid under conditions of natural convection caused by radiation heating was studied experimentally. It was shown that the dynamics ...

  • Preorder on the Set of Analytic Functions 

    Stepanova, Maria A.; Степанова, Мария А. (Сибирский федеральный университет. Siberian Federal University, 2023-10)
    In the paper, we study a preorder, which can be naturally defined on the set of all analytic functions of two complex variables with the help of superpositions of analytic functions of one variable

  • To the Question of Rigorous Axiomatization of Thermodynamics 

    Sidorov, Kirill A.; Сидоров, Кирилл А. (Сибирский федеральный университет. Siberian Federal University, 2023-10)
    An attempt is made in the article to rigorously axiomatize thermodynamics, i.e., to construct such a presentation of it in which its entire presentation follows from several axioms. At the same time, it turns out that ...

  • Flow and Heat Transfer Characteristics during the Flow around Tandem of Circular Cylinders 

    Seroshtanov, Vladimir V.; Selezneva, Marina D.; Maslov, Vladislav A.; Gusakov, Andrey A.; Сероштанов, Владимир В.; Селезнева, Марина Д.; Маслов, Владислав А.; Гусаков, Андрей А. (Сибирский федеральный университет. Siberian Federal University, 2023-10)
    The forced convection into the tandem circular cylinders is investigated using gradient heatmetry and particle image velocimetry-based experiments. The study’s objective is to understand the effect of geometry on the ...

  • Elasto-plastic Twisting of a Two-layer Rod Weakened by Holes 

    Senashov, Sergei I.; Savostyanova, Irina L.; Cherepanova, Olga N.; Сенашов, Сергей И.; Савостьянова, Ирина Л.; Черепанова, Ольга Н. (Сибирский федеральный университет. Siberian Federal University, 2023-10)
    Under study is the elasto-plastic twisting of a multiply-connected two-layer prismatic rod under the influence of a couple of forces with a given moment. It is assumed that the rod consists of two layers. Either layer ...

  • Uniform Estimates for Mittag-Leffler Functions with Smooth Phase 

    Safarov, Akbar R.; Сафаров, Акбар Р. (Сибирский федеральный университет. Siberian Federal University, 2023-10)
    In this paper we consider the problem on uniform estimates for Mittag–Leffler functions with the smooth phase functions having singularities D1, D 4 and Ar. The generalisation is that we replace the exponential ...

  • Criterion of Global Admissibility for Logic IPC 

    Rimatskiy, Vitaliy V.; Римацкий, Виталий В. (Сибирский федеральный университет. Siberian Federal University, 2023-10)
    We describe globally admissible inference rules for logic IPC

  • An Inverse Problem for Pseudoparabolic Equation with the Mixed Boundary Condition 

    Lyubanova, Anna Sh.; Любанова, Анна Ш. (Сибирский федеральный университет. Siberian Federal University, 2023-10)
    In this paper we study the inverse problem on identification of the leading coefficient in the pseudoparabolic equation. The problem involves the mixed boundary condition. The unknown coefficient is recovered by additional ...

  • Mathematical Modeling of Cathodic Zinc Electroextraction Processes 

    Kashapov, Lenar N.; Kashapov, Nail F.; Chebakova, Violetta Yu.; Chebakova, Evgenia V.; Кашапов, Ленар Н.; Кашапов, Наиль Ф.; Чебакова, Виолетта Ю; Чебакова, Евгения В. (Сибирский федеральный университет. Siberian Federal University, 2023-10)
    Numerical optimization techniques are widely used for solving applied problems in economics, as well as problems related to the optimization of production processes. In this paper, the Hooke-Jeeves method of direct search ...

  • Contact Mappings of Jet Spaces 

    Kaptsov, Oleg V.; Капцов, Олег В. (Сибирский федеральный университет. Siberian Federal University, 2023-10)
    In this paper we consider mappings of jet spaces that preserve the module of canonical Pfaffian forms, but are not generally invertible. These mappings are called contact. A lemma on the prolongation of contact mappings ...

  • On the Solvability of a Burgers-type Equation with a Specia Type of Nonlinearity 

    Frolenkov, Igor V.; Sorokin, Roman V.; Zubrov, Ivan E.; Фроленков, Игорь В.; Сорокин, Роман В.; Зубров, Иван Е. (Сибирский федеральный университет. Siberian Federal University, 2023-10)
    This paper considers a one-dimensional parabolic Burgers equation of special form with Cauchy data. When proving the theorem on the solvability of this problem, we used the method of weak approximation developed by Yu.Ya. ...

  • Effect of Permittivity on the Ionic Boundary Layer upon Protonation of Lithium Niobate 

    Demin, Vitaly A.; Petukhov, Maxim I.; Ponomarev, Roman S.; Kuneva, Mariana K.; Демин, Виталий А.; Петухов, Максим И.; Пономарев, Роман С.; Кунева, Мариана К. (Сибирский федеральный университет. Siberian Federal University, 2023-10)
    The paper presents the results of a numerical study of the behavior of proton exchange reaction products after they enter benzoic acid, which interacts with a lithium niobate crystal. The theoretical model based on the ...

  • Two Heuristic Algorithms for RCPSP with NPV Criterion 

    Bulavchuk, Aleksandr M.; Semenova, Daria V.; Булавчук, Александр М.; Семенова, Дарья В. (Сибирский федеральный университет. Siberian Federal University, 2023-10)
    The resource constrained project scheduling problem (RCPSP) with the criterion of max- imizing the net present value (NPV) is considered. We propose two heuristic algorithms for RCPSP based on idempotent algebra methods. ...

  • Green Function of Quantum Particle Moving in Two-dimensional Annular Potential 

    Brahim Benali; Said Douis; Mohammed Tayeb Meftah; Брахим Бенали; Саид Дуи; Мохаммед Тайеб Мефтах (Сибирский федеральный университет. Siberian Federal University, 2023-10)
    In this work, we present a new result which concerns the obtainment of the Green function relative to the time-independent Schrodinger equation in two dimensional space. The system considered in this work is a particle ...

  • Investigation of the Effect of Air Admission on the Vortex Structure of the Flow in a Tangential Chamber 

    Platonov, Dmitriy V.; Sentyabov, Andrey V.; Minakov, Andrey V.; Shtork, Sergey I.; Платонов, Дмитрий В.; Сентябов, Андрей В.; Минаков, Андрей В.; Шторк, Сергей И. (Сибирский федеральный университет. Siberian Federal University, 2023-10)
    In the work, numerical simulations of a turbulent swirling flow in a model tangential chamber were performed. Depending on the swirl number and water flow discharge, various flow regimes are observed: a column vortex, a ...