Subjects -> PHYSICS (Total: 857 journals)
    - ELECTRICITY AND MAGNETISM (10 journals)
    - MECHANICS (22 journals)
    - NUCLEAR PHYSICS (53 journals)
    - OPTICS (92 journals)
    - PHYSICS (625 journals)
    - SOUND (25 journals)
    - THERMODYNAMICS (30 journals)

PHYSICS (625 journals)            First | 1 2 3 4     

Showing 601 - 741 of 741 Journals sorted alphabetically
Tectonics     Full-text available via subscription   (Followers: 15)
The European Physical Journal H     Hybrid Journal   (Followers: 2)
The European Physical Journal Plus     Open Access   (Followers: 1)
The Physics Teacher     Full-text available via subscription   (Followers: 360)
Theoretical and Computational Fluid Dynamics     Hybrid Journal   (Followers: 22)
Theoretical and Mathematical Physics     Hybrid Journal   (Followers: 8)
Thermal Science and Engineering Progress     Open Access   (Followers: 6)
Transport Phenomena in Nano and Micro Scales     Open Access  
Tribologie und Schmierungstechnik     Full-text available via subscription  
Tribology International     Hybrid Journal   (Followers: 47)
Tribology Letters     Hybrid Journal   (Followers: 9)
Turkish Journal of Physics     Open Access  
Ultrasonics     Hybrid Journal   (Followers: 9)
Ultrasonics Sonochemistry     Hybrid Journal   (Followers: 2)
Ultrasound in Medicine & Biology     Hybrid Journal   (Followers: 10)
Universal Journal of Physics and Application     Open Access  
Unnes Physics Education Journal     Open Access   (Followers: 1)
Vibration     Open Access   (Followers: 30)
Virtual Journal of Quantum Information     Hybrid Journal   (Followers: 3)
Water Waves     Hybrid Journal  
Western Journal of Communication     Hybrid Journal   (Followers: 5)
Women & Performance: a journal of feminist theory     Hybrid Journal   (Followers: 15)
World Journal of Condensed Matter Physics     Open Access   (Followers: 2)
Zeitschrift für angewandte Mathematik und Physik     Hybrid Journal   (Followers: 2)
Фізика і хімія твердого тіла     Open Access  

  First | 1 2 3 4     

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Zeitschrift für angewandte Mathematik und Physik
Journal Prestige (SJR): 0.828
Citation Impact (citeScore): 2
Number of Followers: 2  
 
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 0044-2275 - ISSN (Online) 1420-9039
Published by Springer-Verlag Homepage  [2468 journals]
  • On a mathematical model for cancer invasion with repellent pH-taxis and
           nonlocal intraspecific interaction

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      Abstract: Abstract Starting from a mesoscopic description of cell migration and intraspecific interactions, we obtain by upscaling an effective reaction–diffusion–taxis equation for the cell population density involving spatial nonlocalities in the source term and biasing its motility and growth behavior according to environmental acidity. We prove global existence, uniqueness, and boundedness of a nonnegative solution to a simplified version of the coupled system describing cell and acidity dynamics. A 1D study of pattern formation is performed. Numerical simulations illustrate the qualitative behavior of solutions.
      PubDate: 2024-02-14
       
  • On some direct and inverse problems for an integro-differential equation

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      Abstract: Abstract The direct and two inverse problems defined for an integro-differential equation on a bounded domain have been considered. The spectral problem of the integro-differential equation constitutes the Legendre differential equation in space variable. Finding a space-dependent source term whenever the data at some time, say T, as over-specified condition, constitutes the Ist inverse problem. The 2nd inverse problem consists of recovering a time-dependent coefficient in the source term from an integral type over-specified condition. The Fourier approach is used to have the analytical series solution of the problems. The existence and uniqueness results for the direct and inverse problems under certain regularity conditions on the data are presented.
      PubDate: 2024-02-14
       
  • Dynamical behavior of solutions of a reaction–diffusion–advection
           model with a free boundary

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      Abstract: Abstract This paper is devoted to study the population dynamics of a single species in a one-dimensional environment which is modeled by a reaction–diffusion–advection equation with free boundary condition. We find three critical values \(c_0\) , 2 and \(\beta ^*\) for the advection coefficient \(-\beta \) with \(\beta ^*>2>c_0>0\) , which play key roles in the dynamics, and prove that a spreading-vanishing dichotomy result holds when \(-2<\beta \leqslant c_0\) ; a small spreading-vanishing dichotomy result holds when \(c_0<\beta <2\) ; a virtual spreading-transition-vanishing trichotomy result holds when \(2\leqslant \beta <\beta ^*\) ; only vanishing happens when \(\beta \geqslant \beta ^*\) ; a virtual vanishing-transition-vanishing trichotomy result holds when \(\beta \leqslant -2\) . When spreading or small spreading or virtual spreading happens for a solution, we make use of the traveling semi-wave solutions to give a estimate for the asymptotic spreading speed and asymptotic profile of the right front.
      PubDate: 2024-02-14
       
  • Nonlocal residual symmetries, N-th Bäcklund transformations and exact
           

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      Abstract: Abstract The nonlocal residual symmetries of a generalized Broer–Kaup–Kupershmidt system are constructed using the truncated Painlevé expansion. By considering appropriate potential variables, these nonlocal symmetries are localized into Lie point symmetries by prolonging the generalized Broer–Kaup–Kupershmidt system to an enlarged system. Moreover, multiple residual symmetries of the studied system are derived, their localization is performed, and the N-th Bäcklund transformation theorem is presented. Furthermore, some exact interaction solutions between solitons and various kinds of nonlinear waves are formulated in view of the new consistent tanh expansion method.
      PubDate: 2024-02-12
       
  • Properties of a class of quasi-periodic Schrödinger operators

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      Abstract: Abstract In this paper, a class of models with deep physical meaning is studied through duality, and positive Lyapunov exponents and some spectral properties are obtained under certain conditions.
      PubDate: 2024-02-12
       
  • Well-posedness, asymptotic stability and blow-up results for a nonlocal
           singular viscoelastic problem with logarithmic nonlinearity

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      Abstract: Abstract Considered herein is the well-posedness, asymptotic stability and blow-up of the initial-boundary value problem for nonlocal singular viscoelastic wave equation with logarithmic nonlinearity \(u_{tt}-\frac{1}{x}(x u_{x})_x-\frac{1}{x}(x u_{xt})_x+\int \limits _{0}^{t}m(t-\lambda )\frac{1}{x}(x u_{x}(x, \lambda ))_x \hbox {d}\lambda = u ^{r-2}u\ln u \) subject to a nonlocal boundary condition. Through the effective combining of Galerkin approximation method, modified potential well theory, perturbed energy method, convexity theory and differential-integral inequality techniques, we firstly demonstrate the global existence and uniqueness of weak solutions in certain weighted Sobolev spaces; Secondly, we establish the explicit polynomial and exponential energy decay estimates under some suitable conditions; Finally, we investigate the finite time blow-up criterion and then derive its upper and lower bounds of blow-up time. The above conclusions extend and improve some results in the literatures.
      PubDate: 2024-02-10
       
  • Global well-posedness for 2D nonhomogeneous asymmetric fluids with
           magnetic field and density-dependent viscosity

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      Abstract: Abstract We study an initial-boundary value problem of two-dimensional nonhomogeneous asymmetric fluids with magnetic field and density-dependent viscosity \(\mu (\rho )\) . Applying Desjardins’ interpolation inequality and delicate energy estimates, we show the global-in-time existence of a unique strong solution when \(\Vert \nabla \mu (\rho _0)\Vert _{L^q}\) is properly small. Moreover, we prove that the velocity, the micro-rotational velocity, and the magnetic field converge exponentially to zero in \(H^2\) as time goes to infinity.
      PubDate: 2024-02-10
       
  • Normalized bound states for the Choquard equations in exterior domains

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      Abstract: Abstract In this paper, we investigate the following nonlinear Choquard equation with prescribed \(L^2\) -norm constraint $$\begin{aligned} \left\{ \begin{array}{ll} -\Delta u=\lambda u+( x ^{-1} * u ^2)u &{}\text{ in }\ {\Omega }, \\ u=0&{}\text{ on }\ {\partial \Omega }, \\ \int \limits _\Omega u ^2{\textrm{d}}x=a^2,\\ \end{array} \right. \end{aligned}$$ where \(a>0\) , \(\lambda \in \mathbb R\) appears as an unknown Lagrange multiplier and \(\Omega \subset \mathbb R^3\) is an exterior domain with smooth boundary \(\partial \Omega \ne \emptyset \) such that \(\mathbb R^3\backslash \Omega \) is bounded. By using the splitting lemma for the unconstrained problem in exterior domains, we prove the compactness of Palais–Smale sequences corresponding to the above problem at higher energy levels. Then combining the barycentric function and Brouwer degree theory, we establish the existence of positive normalized bound states for any \(a>0\) provided that \(\mathbb R^3\backslash \Omega \) is contained in a small ball and explain that the restriction on domain \(\Omega \) can be equivalently transferred to a. In addition, under the radial setting of domain \(\Omega \) , we use genus theory to obtain the existence and multiplicity of radial normalized solutions for any \(a>0\) . Finally, we point out that the main results can be extended to a general mass subcritical Choquard equation.
      PubDate: 2024-02-10
       
  • Time-periodic traveling wave solutions of a reaction–diffusion Zika
           epidemic model with seasonality

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      Abstract: Abstract In this paper, the full information about the existence and nonexistence of a time-periodic traveling wave solution of a reaction–diffusion Zika epidemic model with seasonality, which is non-monotonic, is investigated. More precisely, if the basic reproduction number, denoted by \(R_{0}\) , is larger than one, there exists a minimal wave speed \(c^* > 0\) satisfying for each \(c > c^*\) , the system admits a nontrivial time-periodic traveling wave solution with wave speed c, and for \(c<c^*\) , there exist no nontrivial time-periodic traveling waves such that if \(R_0 \leqslant 1\) , the system admits no nontrivial time-periodic traveling waves.
      PubDate: 2024-02-10
       
  • Stability and cross-diffusion-driven instability for a water-vegetation
           model with the infiltration feedback effect

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      Abstract: Abstract This paper is devoted to a mathematical model with diffusion and cross-diffusion to describe the interaction between vegetation and soil water. First, the existence of Hopf bifurcation and cross-diffusion-driven Turing instability are discussed. Then, based on the nonlinear analysis, we obtain the exact parameters range for stationary patterns and show the dynamical behavior near Turing bifurcation point. It is found that the model has the properties of gap, strip and spot patterns. Moreover, the small water-uptake ability of vegetation roots promotes the growth of vegetation and the transitions of vegetation pattern. But with the continuous increase of the water-uptake ability of vegetation roots, the local vegetation biomass density increases and the isolation between vegetation patches also increases, which may induce the emergence of desertification. In addition, our results reveal that the water consumption rate induces the transitions of vegetation pattern and prohibits the increase of vegetation biomass density.
      PubDate: 2024-02-10
       
  • Boundedness and large-time behavior in a chemotaxis system with
           signal-dependent motility arising from tumor invasion

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      Abstract: Abstract In this paper, we study the following chemotaxis system with signal-dependent motility arising from tumor invasion $$\begin{aligned} \left\{ \begin{aligned}&u_t=\Delta (\varphi (v)u)+\rho u -\mu u^l,&\qquad \quad x\in \Omega ,\,t>0,\\&v_t=\Delta v+ wz,&\qquad \quad x\in \Omega ,\,t>0,\\&w_t=-wz,&\qquad \quad x\in \Omega ,\,t>0,\\&z_t=\Delta z-z+u,&\qquad \quad x\in \Omega ,\,t>0 \end{aligned} \right. \end{aligned}$$ under homogeneous Neumann boundary conditions in a smooth bounded domain \( \Omega \subset {\mathbb {R}}^n(n\ge 1)\) , where the parameters \( \rho \ge 0,\mu \ge 0\) and \( l>1\) are constants, the motility function \(\varphi (v)\) satisfies \( \varphi (v)\in C^3([0,+\infty )), \varphi _1\le \varphi (v)\le \varphi _2\) and \( \varphi '(v) \le \varphi _3\) with \(\varphi _1,\varphi _2,\varphi _3>0.\) The purpose of this paper is to prove that the existence of global bounded solution for \(1\le n\le 3\) . For \(n\ge 4\) , we prove that the nonnegative classical solution (u, v, w, z) is globally bounded if \(l>\frac{n}{2}\) . In addition, we also show that all the global bounded solution will converge to the non-trivial constant steady state exponentially.
      PubDate: 2024-01-30
       
  • Existence and asymptotic behavior of positive solutions to some
           logarithmic Schrödinger–Poisson system

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      Abstract: Abstract In this paper, we consider the following logarithmic Schrödinger–Poisson system $$\begin{aligned} \left\{ \begin{aligned}&- \Delta u + V(x) u + \lambda K(x)\phi u = f(u) + u \log u^2,&x \in {\mathbb {R}}^{3},\\&- \Delta \phi - \varepsilon ^4 \Delta _4 \phi = \lambda K(x) u^2,&x \in {\mathbb {R}}^{3},\\ \end{aligned} \right. \end{aligned}$$ which has increasingly received interest due to the indefiniteness of the energy functional and fourth-order term in Poisson equation. By using variational method, we prove the existence and multiplicity of positive solutions. Finally, we obtain the asymptotic behavior of positive solutions as \(\varepsilon \rightarrow 0^+\) and \(\lambda \rightarrow 0^+\) , respectively.
      PubDate: 2024-01-30
       
  • Dynamical analysis of a spatial memory prey–predator system with
           gestation delay and strong Allee effect

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      Abstract: Abstract In this paper, we formulate a diffusive prey–predator system with strong Allee effect in prey, spatial memory, and gestation delay of predator. Turing instability and Hopf bifurcation are investigated extensively. The system more easily creates Turing patterns, when the predator owns sluggish memory-induced diffusion. If the predator owns rapid memory-induced diffusion, then the system may present abundant dynamics. Predator with long memory displays a spatial nonhomogeneous periodic spread once the system only contains spatial memory delay. Populations are in a homogeneous or nonhomogeneous periodic spread with gestation period. However, under the combined influences of memory delay and gestation delay, the stability switches appear. Strong Allee effect has obvious influences on the system. The positive equilibrium is linearly stable if there is no strong Allee effect; once strong Allee effect is reasonable, it is unstable. But if the Allee effect is huge enough, then two populations can die out. Finally, we investigate the results by numerical simulations, which demonstrate that spatial memory, gestation delay, and strong Allee effect are conductive to the dynamics of the system.
      PubDate: 2024-01-29
       
  • Normalized solutions to planar Schrödinger equation with exponential
           critical nonlinearity

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      Abstract: Abstract This paper is concerned with the following planar Schrödinger equation $$\begin{aligned} \left\{ \begin{aligned}&-\Delta u+\lambda u = f(u),&x \in {\mathbb {R}}^{2},\\&\mathop \int \limits _{{\mathbb {R}}^2}u^2dx=c,&\lambda \in {\mathbb {R}}^+. \end{aligned}\right. \end{aligned}$$ where \(f \in {\mathcal {C}}({\mathbb {R}},{\mathbb {R}})\) is of critical exponential growth. We obtain the existence of ground state normalized solutions \((u,\lambda )\) under general assumptions, and here \(\lambda \) stands for a Lagrange multiplier. Our theorems extend the results of Alves, Ji and Miyagaki (Calc Var 61:18, 2022) and Chang, Liu and Yan (J Geom Anal 33:83, 2023), where f satisfies a strong global assumption. In particular, some new estimates and approaches are introduced to overcome the lack of compactness resulting from the critical growth of f(u).
      PubDate: 2024-01-28
       
  • Stability and decay estimates of the 2D incompressible magneto-micropolar
           fluid system with partial viscosity on a flat strip

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      Abstract: Abstract In this paper, the authors establish the stability and the explicit decay estimates of the 2D incompressible magneto-micropolar fluid equations without magnetic diffusion and zero spin viscosity on a flat strip \(\Omega :={\mathbb {T}}\times [0,1]\) under the assumption that Navier type condition being imposed. The results are obtained heavily based on some time-weight energy estimates and a bootstrap argument.
      PubDate: 2024-01-28
       
  • Green’s functions for an anisotropic elastic matrix containing an
           elliptical incompressible liquid inclusion

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      Abstract: Abstract We use the Stroh sextic formalism for anisotropic elasticity and Muskhelishvili’s complex variable formulation for isotropic elasticity to derive a full-field closed-form solution to the generalized plane strain problem of an elliptical incompressible liquid inclusion embedded in an infinite anisotropic elastic matrix subjected to a line force and a line dislocation. An explicit expression for the internal uniform hydrostatic tension within the liquid inclusion is obtained. Furthermore, in the case when the line force and line dislocation approach the elliptical liquid–solid interface, we develop a real-form solution for the internal uniform hydrostatic tension in terms of the Barnett–Lothe tensors for the matrix.
      PubDate: 2024-01-28
       
  • Mathematical derivation of a Reynolds equation for magneto-micropolar
           fluid flows through a thin domain

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      Abstract: Abstract In this paper, we study the asymptotic behavior of the stationary 3D magneto-micropolar fluid flow through a thin domain, whose thickness is given by a parameter \(0<\varepsilon \ll 1\) . Assuming that the magnetic Reynolds number is written in terms of the thickness \(\varepsilon \) , we prove that there exists a critical magnetic Reynolds number, namely \(Re_m^c=\varepsilon ^{-2}\) , such that for every magnetic Reynolds number \(Re_m\) with order smaller or equal than \(Re_m^c\) , the magneto-micropolar fluid flow in the thin domain can be modeled asymptotically when \(\varepsilon \) tends to zero by a 2D Reynolds-like model, whose expression is also given.
      PubDate: 2024-01-28
       
  • Bifurcation analysis of a delayed diffusive predator–prey model with
           spatial memory and toxins

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      Abstract: Abstract In this paper, we propose a diffusive predator–prey model with two delays, i.e., a spatial memory delay and a toxic effect delay. Initially, we analyze the global existence of the solution of the system. We then analyze the equilibria’s local stability without delays and investigate the Hopf bifurcation induced by one delay. Subsequently, we establish an analytical framework for constructing the stability switching curve in the delay space. Finally, we present numerical simulations to validate the theoretical results and verify the emergence of various spatial patterns in the system.
      PubDate: 2024-01-28
       
  • Nonlinear perturbations of a periodic Kirchhoff–Boussinesq-type problems
           in $$\mathbb {R}^{N}$$

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      Abstract: Abstract This paper is concerned with the existence of a ground state solution for the following class of elliptic Kirchhoff–Boussinesq-type problems given by $$\begin{aligned} \Delta ^{2} u \pm \Delta _{p} u +V(x)u= f(u) +\gamma u ^{2_{**}-2}u \ \ \text{ in } \ \ \mathbb {R}^{N}, \end{aligned}$$ where \(2< p< 2^{*}= \frac{2N}{N-2}\) for \( N\ge 3\) and \(2_{**}= \infty \) for \(N=3\) , \(N=4\) , \(2_{**}= \frac{2N}{N-4}\) for \(N\ge 5\) . Here V and f are continuous functions with V being either periodic or asymptote to infinity a periodic function. The function f(u) has subcritical growth and behaves like \( u ^{q-2}u\) with \(p<q< 2_{**}\) . We show existence of a ground state solution using variational methods considering the subcritical case, i.e, \(\gamma =0\) and the critical case, i.e, \(\gamma =1\) .
      PubDate: 2024-01-27
       
  • Well-posedness of the governing equations for a quasi-linear viscoelastic
           model with pressure-dependent moduli in which both stress and strain
           appear linearly

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      Abstract: Abstract The response of a body described by a quasi-linear viscoelastic constitutive relation, whose material moduli depend on the mechanical pressure (that is one-third the trace of stress) is studied. The constitutive relation stems from a class of implicit relations between the histories of the stress and the relative deformation gradient. A-priori thresholding is enforced through the pressure that ensures that the displacement gradient remains small. The resulting mixed variational problem consists of an evolutionary equation with the Volterra convolution operator; this equation is studied for well-posedness within the theory of maximal monotone graphs. For isotropic extension or compression, a semi-analytic solution of the quasi-linear viscoelastic problem is constructed under stress control. The equations are studied numerically with respect to monotone loading both with and without thresholding. In the example, the thresholding procedure ensures that the solution does not blow-up in finite time.
      PubDate: 2024-01-16
       
 
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  Subjects -> PHYSICS (Total: 857 journals)
    - ELECTRICITY AND MAGNETISM (10 journals)
    - MECHANICS (22 journals)
    - NUCLEAR PHYSICS (53 journals)
    - OPTICS (92 journals)
    - PHYSICS (625 journals)
    - SOUND (25 journals)
    - THERMODYNAMICS (30 journals)

PHYSICS (625 journals)            First | 1 2 3 4     

Showing 601 - 741 of 741 Journals sorted alphabetically
Tectonics     Full-text available via subscription   (Followers: 15)
The European Physical Journal H     Hybrid Journal   (Followers: 2)
The European Physical Journal Plus     Open Access   (Followers: 1)
The Physics Teacher     Full-text available via subscription   (Followers: 360)
Theoretical and Computational Fluid Dynamics     Hybrid Journal   (Followers: 22)
Theoretical and Mathematical Physics     Hybrid Journal   (Followers: 8)
Thermal Science and Engineering Progress     Open Access   (Followers: 6)
Transport Phenomena in Nano and Micro Scales     Open Access  
Tribologie und Schmierungstechnik     Full-text available via subscription  
Tribology International     Hybrid Journal   (Followers: 47)
Tribology Letters     Hybrid Journal   (Followers: 9)
Turkish Journal of Physics     Open Access  
Ultrasonics     Hybrid Journal   (Followers: 9)
Ultrasonics Sonochemistry     Hybrid Journal   (Followers: 2)
Ultrasound in Medicine & Biology     Hybrid Journal   (Followers: 10)
Universal Journal of Physics and Application     Open Access  
Unnes Physics Education Journal     Open Access   (Followers: 1)
Vibration     Open Access   (Followers: 30)
Virtual Journal of Quantum Information     Hybrid Journal   (Followers: 3)
Water Waves     Hybrid Journal  
Western Journal of Communication     Hybrid Journal   (Followers: 5)
Women & Performance: a journal of feminist theory     Hybrid Journal   (Followers: 15)
World Journal of Condensed Matter Physics     Open Access   (Followers: 2)
Zeitschrift für angewandte Mathematik und Physik     Hybrid Journal   (Followers: 2)
Фізика і хімія твердого тіла     Open Access  

  First | 1 2 3 4     

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School of Mathematical and Computer Sciences
Heriot-Watt University
Edinburgh, EH14 4AS, UK
Email: journaltocs@hw.ac.uk
Tel: +00 44 (0)131 4513762
 


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