Subjects -> MATHEMATICS (Total: 1013 journals)
    - APPLIED MATHEMATICS (92 journals)
    - GEOMETRY AND TOPOLOGY (23 journals)
    - MATHEMATICS (714 journals)
    - MATHEMATICS (GENERAL) (45 journals)
    - NUMERICAL ANALYSIS (26 journals)
    - PROBABILITIES AND MATH STATISTICS (113 journals)

MATHEMATICS (714 journals)                  1 2 3 4 | Last

Showing 1 - 200 of 538 Journals sorted alphabetically
Abakós     Open Access   (Followers: 4)
Abhandlungen aus dem Mathematischen Seminar der Universitat Hamburg     Hybrid Journal   (Followers: 2)
Accounting Perspectives     Full-text available via subscription   (Followers: 4)
ACM Transactions on Algorithms (TALG)     Hybrid Journal   (Followers: 13)
ACM Transactions on Computational Logic (TOCL)     Hybrid Journal   (Followers: 5)
ACM Transactions on Mathematical Software (TOMS)     Hybrid Journal   (Followers: 6)
ACS Applied Materials & Interfaces     Hybrid Journal   (Followers: 44)
Acta Applicandae Mathematicae     Hybrid Journal   (Followers: 2)
Acta Mathematica Hungarica     Hybrid Journal   (Followers: 3)
Acta Mathematica Sinica, English Series     Hybrid Journal   (Followers: 5)
Acta Mathematica Vietnamica     Hybrid Journal  
Acta Mathematicae Applicatae Sinica, English Series     Hybrid Journal  
Advanced Science Letters     Full-text available via subscription   (Followers: 9)
Advances in Applied Clifford Algebras     Hybrid Journal   (Followers: 6)
Advances in Catalysis     Full-text available via subscription   (Followers: 7)
Advances in Complex Systems     Hybrid Journal   (Followers: 10)
Advances in Computational Mathematics     Hybrid Journal   (Followers: 16)
Advances in Decision Sciences     Open Access   (Followers: 4)
Advances in Difference Equations     Open Access   (Followers: 4)
Advances in Fixed Point Theory     Open Access  
Advances in Geosciences (ADGEO)     Open Access   (Followers: 21)
Advances in Linear Algebra & Matrix Theory     Open Access   (Followers: 7)
Advances in Materials Science     Open Access   (Followers: 23)
Advances in Mathematical Physics     Open Access   (Followers: 6)
Advances in Mathematics     Full-text available via subscription   (Followers: 18)
Advances in Numerical Analysis     Open Access   (Followers: 4)
Advances in Operations Research     Open Access   (Followers: 13)
Advances in Operator Theory     Hybrid Journal  
Advances in Pure Mathematics     Open Access   (Followers: 10)
Advances in Science and Research (ASR)     Open Access   (Followers: 8)
Aequationes Mathematicae     Hybrid Journal   (Followers: 2)
African Journal of Educational Studies in Mathematics and Sciences     Full-text available via subscription   (Followers: 8)
African Journal of Mathematics and Computer Science Research     Open Access   (Followers: 5)
Afrika Matematika     Hybrid Journal   (Followers: 2)
Air, Soil & Water Research     Open Access   (Followers: 7)
AKSIOMATIK : Jurnal Penelitian Pendidikan dan Pembelajaran Matematika     Open Access  
Al-Jabar : Jurnal Pendidikan Matematika     Open Access  
Al-Qadisiyah Journal for Computer Science and Mathematics     Open Access   (Followers: 3)
AL-Rafidain Journal of Computer Sciences and Mathematics     Open Access   (Followers: 4)
Algebra and Logic     Hybrid Journal   (Followers: 9)
Algebra Colloquium     Hybrid Journal   (Followers: 3)
Algebra Universalis     Hybrid Journal   (Followers: 3)
Algorithmic Operations Research     Open Access   (Followers: 7)
Algorithms     Open Access   (Followers: 15)
Algorithms Research     Open Access   (Followers: 2)
American Journal of Computational and Applied Mathematics     Open Access   (Followers: 4)
American Journal of Mathematical Analysis     Open Access   (Followers: 1)
American Journal of Mathematical and Management Sciences     Hybrid Journal  
American Journal of Mathematics     Full-text available via subscription   (Followers: 8)
American Journal of Operations Research     Open Access   (Followers: 6)
American Mathematical Monthly     Full-text available via subscription   (Followers: 3)
An International Journal of Optimization and Control: Theories & Applications     Open Access   (Followers: 13)
Analele Universitatii Ovidius Constanta - Seria Matematica     Open Access  
Analysis and Applications     Hybrid Journal   (Followers: 2)
Analysis and Mathematical Physics     Hybrid Journal   (Followers: 7)
Anargya : Jurnal Ilmiah Pendidikan Matematika     Open Access  
Annales Mathematicae Silesianae     Open Access  
Annales mathématiques du Québec     Hybrid Journal   (Followers: 3)
Annales Universitatis Mariae Curie-Sklodowska, sectio A – Mathematica     Open Access   (Followers: 1)
Annales Universitatis Paedagogicae Cracoviensis. Studia Mathematica     Open Access  
Annali di Matematica Pura ed Applicata     Hybrid Journal   (Followers: 1)
Annals of Combinatorics     Hybrid Journal   (Followers: 3)
Annals of Data Science     Hybrid Journal   (Followers: 17)
Annals of Functional Analysis     Hybrid Journal   (Followers: 2)
Annals of Mathematics     Full-text available via subscription   (Followers: 5)
Annals of Mathematics and Artificial Intelligence     Hybrid Journal   (Followers: 13)
Annals of PDE     Hybrid Journal  
Annals of Pure and Applied Logic     Open Access   (Followers: 5)
Annals of the Alexandru Ioan Cuza University - Mathematics     Open Access   (Followers: 1)
Annals of the Institute of Statistical Mathematics     Hybrid Journal   (Followers: 1)
Annals of West University of Timisoara - Mathematics     Open Access   (Followers: 1)
Annals of West University of Timisoara - Mathematics and Computer Science     Open Access   (Followers: 2)
Annuaire du Collège de France     Open Access   (Followers: 6)
ANZIAM Journal     Open Access   (Followers: 1)
Applicable Algebra in Engineering, Communication and Computing     Hybrid Journal   (Followers: 3)
Applications of Mathematics     Hybrid Journal   (Followers: 3)
Applied Categorical Structures     Hybrid Journal   (Followers: 5)
Applied Computational Intelligence and Soft Computing     Open Access   (Followers: 17)
Applied Mathematics     Open Access   (Followers: 6)
Applied Mathematics     Open Access   (Followers: 6)
Applied Mathematics & Optimization     Hybrid Journal   (Followers: 7)
Applied Mathematics - A Journal of Chinese Universities     Hybrid Journal   (Followers: 1)
Applied Mathematics and Nonlinear Sciences     Open Access   (Followers: 1)
Applied Mathematics Letters     Full-text available via subscription   (Followers: 4)
Applied Mathematics Research eXpress     Hybrid Journal   (Followers: 1)
Applied Network Science     Open Access   (Followers: 3)
Applied Numerical Mathematics     Hybrid Journal   (Followers: 4)
Applied Spatial Analysis and Policy     Hybrid Journal   (Followers: 5)
Arab Journal of Mathematical Sciences     Open Access   (Followers: 3)
Arabian Journal of Mathematics     Open Access   (Followers: 1)
Archive for Mathematical Logic     Hybrid Journal   (Followers: 3)
Archive of Applied Mechanics     Hybrid Journal   (Followers: 4)
Archive of Numerical Software     Open Access  
Archives of Computational Methods in Engineering     Hybrid Journal   (Followers: 5)
Armenian Journal of Mathematics     Open Access  
Arnold Mathematical Journal     Hybrid Journal   (Followers: 1)
Artificial Satellites     Open Access   (Followers: 22)
Asia-Pacific Journal of Operational Research     Hybrid Journal   (Followers: 3)
Asian Journal of Algebra     Open Access   (Followers: 1)
Asian Research Journal of Mathematics     Open Access  
Asian-European Journal of Mathematics     Hybrid Journal   (Followers: 2)
Australian Mathematics Teacher, The     Full-text available via subscription   (Followers: 7)
Australian Primary Mathematics Classroom     Full-text available via subscription   (Followers: 5)
Australian Senior Mathematics Journal     Full-text available via subscription   (Followers: 1)
Automatic Documentation and Mathematical Linguistics     Hybrid Journal   (Followers: 5)
Axioms     Open Access   (Followers: 1)
Baltic International Yearbook of Cognition, Logic and Communication     Open Access   (Followers: 2)
Banach Journal of Mathematical Analysis     Hybrid Journal  
Basin Research     Hybrid Journal   (Followers: 6)
BIBECHANA     Open Access  
Biomath     Open Access  
BIT Numerical Mathematics     Hybrid Journal  
Boletim Cearense de Educação e História da Matemática     Open Access  
Boletim de Educação Matemática     Open Access  
Boletín de la Sociedad Matemática Mexicana     Hybrid Journal  
Bollettino dell'Unione Matematica Italiana     Full-text available via subscription  
British Journal for the History of Mathematics     Hybrid Journal   (Followers: 2)
British Journal of Mathematical and Statistical Psychology     Full-text available via subscription   (Followers: 18)
British Journal of Mathematics & Computer Science     Full-text available via subscription   (Followers: 1)
Buletinul Academiei de Stiinte a Republicii Moldova. Matematica     Open Access   (Followers: 3)
Bulletin des Sciences Mathamatiques     Full-text available via subscription   (Followers: 3)
Bulletin of Dnipropetrovsk University. Series : Communications in Mathematical Modeling and Differential Equations Theory     Open Access   (Followers: 3)
Bulletin of Mathematical Sciences     Open Access   (Followers: 1)
Bulletin of Symbolic Logic     Full-text available via subscription   (Followers: 4)
Bulletin of Taras Shevchenko National University of Kyiv. Series: Physics and Mathematics     Open Access  
Bulletin of the Australian Mathematical Society     Full-text available via subscription   (Followers: 2)
Bulletin of the Brazilian Mathematical Society, New Series     Hybrid Journal  
Bulletin of the Iranian Mathematical Society     Hybrid Journal  
Bulletin of the London Mathematical Society     Hybrid Journal   (Followers: 3)
Bulletin of the Malaysian Mathematical Sciences Society     Hybrid Journal  
Cadernos do IME : Série Matemática     Open Access  
Calculus of Variations and Partial Differential Equations     Hybrid Journal   (Followers: 1)
Canadian Journal of Mathematics / Journal canadien de mathématiques     Hybrid Journal  
Canadian Journal of Science, Mathematics and Technology Education     Hybrid Journal   (Followers: 20)
Canadian Mathematical Bulletin     Hybrid Journal  
Carpathian Mathematical Publications     Open Access  
Catalysis in Industry     Hybrid Journal  
CAUCHY     Open Access   (Followers: 1)
CEAS Space Journal     Hybrid Journal   (Followers: 5)
CHANCE     Hybrid Journal   (Followers: 5)
Chaos, Solitons & Fractals     Hybrid Journal   (Followers: 1)
Chaos, Solitons & Fractals : X     Open Access   (Followers: 1)
ChemSusChem     Hybrid Journal   (Followers: 8)
Chinese Annals of Mathematics, Series B     Hybrid Journal  
Chinese Journal of Catalysis     Full-text available via subscription   (Followers: 2)
Chinese Journal of Mathematics     Open Access  
Ciencia     Open Access  
CODEE Journal     Open Access  
Cogent Mathematics     Open Access   (Followers: 2)
Cognitive Computation     Hybrid Journal   (Followers: 3)
Collectanea Mathematica     Hybrid Journal  
College Mathematics Journal     Hybrid Journal   (Followers: 3)
COMBINATORICA     Hybrid Journal  
Combinatorics, Probability and Computing     Hybrid Journal   (Followers: 5)
Combustion Theory and Modelling     Hybrid Journal   (Followers: 22)
Commentarii Mathematici Helvetici     Hybrid Journal   (Followers: 1)
Communications in Combinatorics and Optimization     Open Access  
Communications in Contemporary Mathematics     Hybrid Journal  
Communications in Mathematical Physics     Hybrid Journal   (Followers: 3)
Communications On Pure & Applied Mathematics     Hybrid Journal   (Followers: 6)
Complex Analysis and its Synergies     Open Access   (Followers: 1)
Complex Variables and Elliptic Equations: An International Journal     Hybrid Journal  
Compositio Mathematica     Full-text available via subscription   (Followers: 2)
Comptes Rendus : Mathematique     Open Access  
Computational and Applied Mathematics     Hybrid Journal   (Followers: 3)
Computational and Mathematical Methods     Hybrid Journal  
Computational and Mathematical Methods in Medicine     Open Access   (Followers: 2)
Computational and Mathematical Organization Theory     Hybrid Journal   (Followers: 2)
Computational Complexity     Hybrid Journal   (Followers: 5)
Computational Mathematics and Modeling     Hybrid Journal   (Followers: 8)
Computational Mechanics     Hybrid Journal   (Followers: 12)
Computational Methods and Function Theory     Hybrid Journal  
Computational Optimization and Applications     Hybrid Journal   (Followers: 9)
Computers & Mathematics with Applications     Full-text available via subscription   (Followers: 12)
Confluentes Mathematici     Hybrid Journal  
Constructive Mathematical Analysis     Open Access  
Contributions to Discrete Mathematics     Open Access  
Contributions to Game Theory and Management     Open Access  
COSMOS     Hybrid Journal   (Followers: 1)
Cross Section     Full-text available via subscription   (Followers: 1)
Cryptography and Communications     Hybrid Journal   (Followers: 11)
Cuadernos de Investigación y Formación en Educación Matemática     Open Access  
Cubo. A Mathematical Journal     Open Access  
Current Research in Biostatistics     Open Access   (Followers: 8)
Czechoslovak Mathematical Journal     Hybrid Journal  
Daya Matematis : Jurnal Inovasi Pendidikan Matematika     Open Access  
Demographic Research     Open Access   (Followers: 14)
Design Journal : An International Journal for All Aspects of Design     Hybrid Journal   (Followers: 35)
Desimal : Jurnal Matematika     Open Access  
Dhaka University Journal of Science     Open Access  
Differential Equations and Dynamical Systems     Hybrid Journal   (Followers: 3)
Differentsial'nye Uravneniya     Open Access  
Digital Experiences in Mathematics Education     Hybrid Journal   (Followers: 3)
Discrete Mathematics     Hybrid Journal   (Followers: 7)
Discrete Mathematics & Theoretical Computer Science     Open Access   (Followers: 1)
Discrete Mathematics, Algorithms and Applications     Hybrid Journal   (Followers: 2)
Discussiones Mathematicae - General Algebra and Applications     Open Access  
Discussiones Mathematicae Graph Theory     Open Access   (Followers: 1)
Diskretnaya Matematika     Full-text available via subscription  
Doklady Akademii Nauk     Open Access  

        1 2 3 4 | Last

Similar Journals
Journal Cover
Computational Mathematics and Modeling
Journal Prestige (SJR): 0.241
Number of Followers: 8  
 
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 1573-837X - ISSN (Online) 1046-283X
Published by Springer-Verlag Homepage  [2467 journals]
  • Weakly Nonlinear Waves Propagating in Hyperelastic Cylindrical Rod
           Tranquility of Compressible Murnaghan Material

    • Free pre-print version: Loading...

      Abstract: The compressible Murnaghan’s materials composed in the hyperelastic rod describing the far-field equation as the KdV equation for the weak nonliear waves traversing inside the rod is studied with the F expansion method and solved to get the exact elliptic function solutions. The necessary condition for the each Jacobi solutions are reported. The 2D and 3D graphicals are simulated for certain periodic waves. The necessary condition of selection of material and geometric constants for distraction free wave travelling are suggested.
      PubDate: 2023-01-14
       
  • Mathematical Modeling of Covid-19 and Dengue Co-Infection Dynamics in
           Bangladesh: Optimal Control and Data-Driven Analysis

    • Free pre-print version: Loading...

      Abstract: This paper aims to explore the transmission dynamics of COVID-19 with dengue co-infection using mathematical modeling. In this study, SIR model is developed that explains the trajectory of the epidemic to boost a plan for an effective control strategy for COVID-19 in Bangladesh. The model is extended to optimal control strategies. Pontryagin’s Principle is used to establish the appropriate conditions for the existence of optimal control and the optimality system for the co-infection model. Coinfected cases were reduced with control greater than without control. Using Omicron incidence cases from 1st January – 13th April 2022, the maximum likelihood estimate of R0 with a 95% confidence interval is1.89 [ 95% CI: 1.88, 1.91]. The R0 estimated from the exponential growth method is 2.08 [95% CI: 2.07,2.09]and time-dependent estimate is 2.10[95% CI: 1.72,2.58]. The generalized logistic growth model predicted 19, 52,131 cumulative cases on day 103 (April 13, 2022), and a relatively flat curve of cumulative growth of COVID-19 cases implies a declining trend of new cases. The study also found from sensitivity analysis that, R0 is proportional to the mean generation time. This paper attempted to focus on suppressing the COVID-19 co-infections by preventing dengue and COVID-19. The results of the study show that by implementing optimal control spread of dengue and COVID-19 could be minimized. The logistic growth model suggests that the infection rate of COVID-19 is decreasing.
      PubDate: 2023-01-14
       
  • The Influence of Magnetic Resonance Imaging Artifacts on CNN-Based Brain
           Cancer Detection Algorithms

    • Free pre-print version: Loading...

      Abstract: Early detection of cancer tumors significantly increases the chances of recovery and usually results in improved quality of life and patient lifespan. In this context, computer systems can help and accelerate health care decision making regarding brain diagnoses, based, for example, on machine learning (ML) algorithms applied to neurological magnetic resonance images (MRIs). In the last decade, several ML approaches have been tested for this purpose, with varied levels of accuracy, precision, and sensitivity. It is already clear that this performance depends on the type of tumor, the quality of the image, the number of training images, and, in the case of supervised training, the quality of previously diagnosed images used for training. An important question remains regarding how the performance of these diagnostic tools is affected by image quality, as it is influenced by several factors common to MRIs, such as artifact like ringing effects, Gaussian noise, reconstruction artifacts associated with lower numbers of measurements, movement artifacts, and so forth. In this paper, we conduct a systematic analysis of this relationship, based on a state-of-art ML diagnosis system, but under different levels of image degradation. Our experiments suggest that severe degradations, leading to reduced mean squared error (MSE) values, can systematically reduce the values of all performance evaluated metrics, but whether such reduction occurs for a specified MSE depends on the type of effect. In addition, for all artifacts tested, we evaluated the range of MSE for which the performance reduction is below a specified threshold. These results can be used in the future to indicate the level of confidence in a certain automatic diagnostic result for different image qualities.
      PubDate: 2023-01-13
       
  • On The Intelligent Medical Image Analysis and Processing

    • Free pre-print version: Loading...

      PubDate: 2023-01-12
       
  • Interpretation of Artificial Neural Network Overtraining Using Tropical
           Geometry

    • Free pre-print version: Loading...

      Abstract: We investigate the parameter structure of artificial neural networks with ReLU activation functions by methods of tropical geometry. The main result is a fundamentally new formulation of the problem to detect the onset of neutral network overtraining by using only tropical parameter structures on the training sample. A hypothesis is proposed that detects overtraining from geometrical characteristics; its applicability on prototype datasets is demonstrated. We also investigate on prototype data the dependence of the data structures on starting initialization. The results make it possible to analyze also more complex effects observed in artificial neural network training from the point of view of theoretical parameter structure.
      PubDate: 2023-01-12
       
  • Hardness Analysis of X-Ray Images for Neural-Network Tuberculosis
           Diagnosis

    • Free pre-print version: Loading...

      Abstract: We consider the automatic hardness determination of a chest X-ray image and the effect of pre-filtering of the training and validation samples on the performance of the classification algorithm of tuberculosis diagnosis from chest X-rays. Convolutional neural networks are used in automatic hardness determination and tuberculosis diagnosis. The results of the present study are compared with those from different datasets, including datasets pruned by image hardness criteria.
      PubDate: 2023-01-12
       
  • Multiscale Content-Based Image Retrieval for Whole-Slide Histological
           Images

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      Abstract: A new method if proposed for content-based image retrieval in whole-slide histological images. Given a fragment isolated on the query image, the method finds structurally similar fragments in a large set of images. Such methods are needed in medicine and may help diagnosticians in medical image analysis. The application of such methods to whole-slide histological images has its specifics due to the extremely high resolution of the images and their multiscale structure. These features have been taken into consideration during the development of the method.
      PubDate: 2023-01-12
       
  • A Quantile Game for Portfolio Construction in the Ornstein–Uhlenbeck
           Model

    • Free pre-print version: Loading...

      Abstract: We use the continuous model to study the formation of a portfolio of securities with prices described by Ornstein–Uhlenbeck processes. A zero-sum game is solved in which the investor chooses a vector of portfolio weights with the objective of maximizing the quantile estimator of the portfolio value, while Nature strives to minimize the value by choosing the time. A method is proposed for the construction of the saddle point in this game.
      PubDate: 2023-01-11
       
  • The Dependence of the Antenna Directional Pattern on the Body Shape

    • Free pre-print version: Loading...

      Abstract: We consider a mathematical model for electrodynamic analysis of antennas. The problem is reduced to solving an integral equation over an antenna section. The dependence of the main lobe and the first lobe of the directional pattern on the body shape is investigated. Comparison with experimental results is carried out.
      PubDate: 2023-01-11
       
  • Hidden Unique Possibilities of Mathematical Physics Equations (The
           Formalism of Skew-Symmetric Forms)

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      Abstract: We show that the equations of mathematical physics that describe real processes and include the equations of the conservation laws for energy, momentum, moment of momentum, and mass have a peculiar feature. The conservation law equations turn out to be inconsistent. This produces the integrability of the mathematical physics equations and the specific features of their solutions, namely the presence of double solutions: on a nonintegrable coordinate space and on integrable structures. As a consequence, we can describe evolutionary processes, such as the emergence of discrete structures and observable formations (waves, vortices, turbulent pulsations). Since double solutions are defined on different spatial objects, they can be obtained only in two coordinate systems and using simultaneously two methods of equation solving: numerical and analytical. Appropriate results have been derived in the framework of skew-symmetric forms.
      PubDate: 2023-01-11
       
  • Wave Diffraction on a Dielectric Cylinder in a Free Space

    • Free pre-print version: Loading...

      Abstract: A numerical algorithm is developed for the diffraction of an electromagnetic wave on an infinite dielectric cylinder of arbitrary cross section immersed in a free space. The boundary-value problem for the Maxwell equations in a nonhomogeneous space is reduced to solving a system of singular integral equations by the approximation and collocation method. The matrix elements are evaluated by a special numerical algorithm. The evaluation of the singular integrals is reduced to the evaluation of integrals with a logarithmic singularity.
      PubDate: 2023-01-11
       
  • Controlled Transfer of a Point Mass to a Target Orbit in a
           Three-Dimensional Field

    • Free pre-print version: Loading...

      Abstract: We consider the transfer to a given orbit of a controlled spacecraft whose dynamics is described by the mathematical model of motion in a gravitational field with one attractive center. We propose a class of engine-thrust positional controls dependent on the problem parameters that solve the controllability problem for a given target orbit. The trajectory of motion of a phase point under such control is determined on an infinite time axis. On the initial time interval, the trajectory reaches a neighborhood of the target set, and thereafter it moves in this neighborhood asymptotically approaching the target. The positional control is derived in analytical form. Calculation results are reported for the positional control and the trajectories of motion using different test parameters and different types of spacecraft target trajectories.
      PubDate: 2022-08-06
      DOI: 10.1007/s10598-022-09555-0
       
  • Superimposition and Antagonism in Chain Synthesis Using Entangled
           Biphotonic Control

    • Free pre-print version: Loading...

      Abstract: We consider the synthesis of three and four abstract polymer chains classified into two sexes, where the synthesis quality is determined by the pairing of different-sex chains. The use of some types of entangled biphotons in one-sided control produces a difference in the degree of superimposition between good and bad pairs that is unattainable with classical control. This example demonstrates the quantum superiority in distributed computations following from the violation of Bell’s inequality. This may be relevant for elucidating quantum mechanisms in the synthesis of real biopolymers with various properties.
      PubDate: 2022-08-06
      DOI: 10.1007/s10598-022-09553-2
       
  • Mixing Finite Elements and Finite Differences in Nonlinear Schwarz
           Iterations for Nonlinear Elliptic Pdes

    • Free pre-print version: Loading...

      Abstract: In this paper, we are concerned with a nonmatching grid mixed finite-elements–finite-differences approximation (FEM-FD) method of overlapping nonlinear multiplicative Schwarz iterations for nonlinear elliptic PDEs. By means of a geometric convergence result in L∞ for the nonlinear Schwarz iterations and a Lipschitz property with respect to the data of both the FEM and FD solutions of the corresponding linear PDE problems, we derive an L∞ error estimate on each subdomain between the discrete nth Schwarz iterate and the true solution of the nonlinear PDE.
      PubDate: 2022-08-06
      DOI: 10.1007/s10598-022-09558-x
       
  • The Inverse Problem for the Nonhomogeneous Oscillation Equation on a
           Half-Line with a Boundary Condition of the Third Kind

    • Free pre-print version: Loading...

      Abstract: We consider the inverse problem of simultaneous determination of two coefficients in a model of small transverse oscillations in a homogeneous semi-bounded rod with an elastic force applied to one end. The oscillations are modeled by a nonhomogeneous equation of a hyperbolic type on a half-line. A boundary condition of the third kind is specified at the end of the rod. Supplementary information for the solution of the inverse problem includes given values of the forward solution at a fixed point of the rod. The inverse problem requires the reconstruction of a function in the boundary condition and a functional multiplier in the nonhomogeneity term on a part of the multiplier’s definition domain. We establish the solvability conditions of the inverse problem, some properties of its solution, and propose an algorithm for numerical approximation of the solution.
      PubDate: 2022-08-06
      DOI: 10.1007/s10598-022-09552-3
       
  • A Debugging Tool for Routing Protocols in Wireless Sensor Networks

    • Free pre-print version: Loading...

      Abstract: A wireless sensor network (WSN) is an important modern technology supporting the internet of things. These networks are created as needed. There is no leading protocol, and many competing protocols exist. When a new protocol is developed, it must be tested on hardware. However, a simpler approach is to debug the protocol logic on a PC, not directly on hardware. Yet existing simulators do not allow easy transfer of the simulation code to WSN nodes. The present article describes a simulator that allows easy code transfer from PC to Arduino.
      PubDate: 2022-08-05
      DOI: 10.1007/s10598-022-09557-y
       
  • Determining the Intensity Variation of Heat Sources in the Heat Equation

    • Free pre-print version: Loading...

      Abstract: We investigate the inverse problem for the heat equation with an unknown source represented as the sum of several spatially localized sources with unknown time-dependent intensities. Supplementary information required for the determination of the unknown intensities includes the temperatures at some points as a function of time. Unique solvability of the inverse problem is proved. A numerical method for its solution is proposed. Results of computational experiments are reported demonstrating the efficiency of the proposed numerical method.
      PubDate: 2022-08-05
      DOI: 10.1007/s10598-022-09551-4
       
  • Investigation and Development of Recursive Neural Networks for the
           Analysis of Industrial Processes

    • Free pre-print version: Loading...

      Abstract: We consider the application of neural-network approaches to time-series analysis for the investigation of modern production processes. As an application of the proposed techniques, we study the optimization problem for a fixed set of process outputs. We examine and experimentally evaluate the most appropriate algorithms for industrial process modeling. Methods are proposed for choosing the algorithm architecture and parameters. An optimization method is advanced that allows for the technological constraints in the objective functions.
      PubDate: 2022-08-05
      DOI: 10.1007/s10598-022-09556-z
       
  • The Effect of Spatial Dispersion on the Field Enhancement Factor of
           Magnetoplasmonic Nanoparticles

    • Free pre-print version: Loading...

      Abstract: The discrete sources method is used in the framework of the generalized nonlocal optical response theory (GNOR) to construct a mathematical model of a layered magnetite-Au nanoparticle allowing for the spatial dispersion in the gold shell. We analyze the additional boundary conditions on the magnetite-Au interface that ensure unique solvability of the boundary-value diffraction problem. We investigate the effect of spatial dispersion on the field enhancement factor at the exterior boundary of the layered particle, allowing also for possible asymmetry in the position of the core relative to the shell.
      PubDate: 2022-08-05
      DOI: 10.1007/s10598-022-09554-1
       
  • The Inverse Problem for a Mathematical Model of Deionization Aqueous
           Solutions

    • Free pre-print version: Loading...

      Abstract: We consider a mathematical model of the deionization of aqueous solutions described by a mixed initial–boundary-value problem for a partial-differential system. Uniqueness of the solution if proved. The inverse problem is posed for the ion absorption kinetics given the integral ion concentration observed at the output. Unique solvability of the inverse problem is proved. A numerical method is proposed for the inverse problem. Results of computational experiments demonstrate the efficiency of the proposed numerical method.
      PubDate: 2022-05-05
      DOI: 10.1007/s10598-022-09541-6
       
 
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