Mathematics, Statistics & Physics
Recent Submissions
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Age could be driving variable SARS-CoV-2 epidemic trajectories worldwide
( Public Library of Science , 2020 , Article)Current geographic spread of documented severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infections shows heterogeneity. This study explores the role of age in potentially driving differentials in infection ... -
A novel secure occupancy monitoring scheme based on multi-chaos mapping
( MDPI , 2020 , Article)Smart building control, managing queues for instant points of service, security systems, and customer support can benefit from the number of occupants information known as occupancy. Due to interrupted real-time continuous ... -
A new megastable chaotic oscillator with singularity
( Springer Science and Business Media Deutschland GmbH , 2020 , Article)While multistability is known as a hot topic in nonlinear dynamics, two exceptional cases of multistable systems have been investigated less: extreme multistable systems and megastable systems are two newer categories of ... -
A new Tikhonov-TV regularization for optical flow computation
( SPIE , 2020 , Conference)Tikhonov regularization and total variation (TV) are two famous smoothing techniques used in variational image processing problems and in particular for optical flow computation. We consider a new method that combines these ... -
A Power Associative Loop Structure for the Construction of Non-Linear Components of Block Cipher
( Institute of Electrical and Electronics Engineers Inc. , 2020 , Article)In the symmetric key cryptography, the purpose of the substitution box is to generate confusion and hence improve the security of the whole cryptosystem. For this reason, many algebraic substitution boxes are constructed ... -
A novel hybrid secure image encryption based on Julia set of fractals and 3D lorenz chaotic map
( MDPI , 2020 , Article)Chaos-based encryption schemes have attracted many researchers around the world in the digital image security domain. Digital images can be secured using existing chaotic maps, multiple chaotic maps, and several other ... -
A new megastable nonlinear oscillator with infinite attractors
( Elsevier , 2020 , Article)Dynamical systems with megastable properties are very rare in the literature. In this paper, we introduce a new two-dimensional megastable dynamical system with a line of equilibria, having an infinite number of stable ... -
A Bayesian Approach to Competing Risks Model with Masked Causes of Failure and Incomplete Failure Times
( Hindawi Limited , 2020 , Article)We present a Bayesian approach for analysis of competing risks survival data with masked causes of failure. This approach is often used to assess the impact of covariates on the hazard functions when the failure time is ... -
A fractional-order model for the novel coronavirus (COVID-19) outbreak
( Springer , 2020 , Article)The outbreak of the novel coronavirus (COVID-19), which was firstly reported in China, has affected many countries worldwide. To understand and predict the transmission dynamics of this disease, mathematical models can be ... -
A new oscillator with mega-stability and its Hamilton energy: Infinite coexisting hidden and self-excited attractors
( American Institute of Physics Inc. , 2020 , Article)In this paper, we introduce an interesting new megastable oscillator with infinite coexisting hidden and self-excited attractors (generated by stable fixed points and unstable ones), which are fixed points and limit cycles ... -
A novel symmetric image cryptosystem resistant to noise perturbation based on S8 elliptic curve S-boxes and chaotic maps
( Springer Science and Business Media Deutschland GmbH , 2020 , Article)The recent decade has seen a tremendous escalation of multimedia and its applications. These modern applications demand diverse security requirements and innovative security platforms. In this manuscript, we proposed an ... -
Characterizing key attributes of COVID-19 transmission dynamics in China's original outbreak: Model-based estimations
( Elsevier , 2020 , Article)A novel coronavirus strain, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), emerged in China. This study aims to characterize key attributes of SARS-CoV-2 epidemiology as the infection emerged in China. An ... -
Manganese selenide: Synthetic aspects and applications
( Elsevier , 2020 , Article Review)This article deals with the synthetic strategies and applications of manganese selenide. Manganese selenide has been fabricated over the years with thermal evaporation at reduced pressure, solid state reactions, hydrothermal ... -
Solving multi-point boundary value problems using sinc-derivative interpolation
( MDPI AG , 2020 , Article)In this paper, the Sinc-derivative collocation method is used to solve linear and nonlinear multi-point boundary value problems. This is done by interpolating the first derivative of the unknown variable via Sinc numerical ... -
Metal telluride nanotubes: Synthesis, and applications
( Elsevier , 2020 , Article)Metal tellurides have been explored extensively just like their sulfide and selenide cousins due to their surface chemistry, quantum confinement and physical properties. Nanotubular metal tellurides are more promising in ... -
Analysis of COVID-19 Cases' Spatial Dependence in US Counties Reveals Health Inequalities
( Frontiers Media S.A. , 2020 , Article)On March 13, 2020, the World Health Organization (WHO) declared the 2019 coronavirus disease (COVID-19) caused by the novel coronavirus SARS-CoV2 a pandemic. Since then the virus has infected over 9.1 million individuals ... -
Generalized Littlewood-Paley Functions on Product Spaces
( TUBITAK , 2020 , Article)We are interested in investigating the L p boundedness of the product of generalized Littlewood–Paley functions S (λ) Φ (f) arising from kernels satisfying only size and cancellation conditions. We obtain L p estimates ... -
Extensive use of face masks during COVID-19 pandemic: (micro-)plastic pollution and potential health concerns in the Arabian Peninsula
( Elsevier , 2020 , Article)Face masks are primary line of defense to reduce the transmission risk of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). World Health Organization (WHO) has already updated the guidelines and advised the use ... -
𝜆-point anomaly in view of the seven-loop hypergeometric resummation for the critical exponent 𝜈 of the 𝑂(2) 𝜙4 model
( American Physical Society , 2020 , Article)In this work, we use a specific parametrization of the hypergeometric approximants [the one by Mera et al. in Phys. Rev. Let. 115, 143001 (2015)] to approximate the seven-loop critical exponent 𝜈 for the 𝑂(2)-symmetric ... -
A proximal point algorithm converging strongly to a minimizer of a convex function
( Yarmouk University , 2020 , Article)In this paper, we obtain a new modified proximal point algorithm in the setting of CAT(0) spaces and establish some strong convergence results of the proposed algorithm. In process, several relevant results of the existing ...
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