Original Contributions
 D. Rogula, M. Sztyren:
Equilibrium configurations of magnetic flux lines
in strongly anisotropic superconductors
 E. Włodarczyk:
The backward launching of solids by products of detonation
 B. Atamaniuk, K. Żuchowski:
Twoion dusty plasma waves and Landau damping
 D. Spałek:
Fourth boundary condition for electromagnetic field
 K. Kroszczyński:
The properties of a strange attractor reconstructed from
the time series of tropospheric mean temperature
 S. Apanasewicz and S. Pawłowski:
Using improved impedance boundary conditions
to derive distributions of electromagnetic fields
 S.K. Ghosh, D.K. Nandi:
Magnetohydrodynamic fully developed combined convection flow
between vertical plates heated asymmetrically
 D. Rogula, M. Sztyren:
Equilibrium configurations of magnetic flux lines
in strongly anisotropic superconductors
 The string model is applied to networks of magnetic flux lines in a strongly anisotropic
superconducting medium. The notion of vectorial anisotropic string tension is introduced.
It is shown that, contrary to the case of isotropic string, the tension is not tangent
to the flux line. The equilibrium configurations of flux lines pinned to the anisotropic
material are examined. The existence of spontaneously bent extremals, energetically more
favorable than straight lines, is proven. The question of degeneracy of the solutions is discussed.
Contents
 E. Włodarczyk:
The backward launching of solids by products of detonation
 The problem of the initial phase of backward launching of the concentrated masses
M_{1} and M_{2} by the compressed products of detonation,
was solved in a closed form. It was found that the application of the Gurney formulae
to estimate the initial velocity of the explosively driven elements of the shaped charge
liner is burdened with a relatively large error. It results from the linear approximation
of the flow velocity of the detonation products versus the Lagrangian coordinate (r).
This approximation can be used when
M_{1} = M_{2} ³ 1,
where m is the explosive mass. This condition in the shaped charge ammunition (HEAT),
especially in warheads with a heavy casing and thin liner, is not satisfied.
Besides, it was shown that the flow velocity of the detonation products changes linearly versus
the Eulerian coordinate (x). The constructed solution can be used in the description
of the process of shaped charge jet formation.
Contents
 B. Atamaniuk, K. Żuchowski:
Twoion dusty plasma waves and Landau damping
 The paper analyses the properties of dusty plasmas in the extreme conditions when the free
electrons are absent. The nonlinear Korteveg de Vries equation with a nonlocal (integral) term
in a small parameter approximation is derived. The conditions are determined when the integral
term is essential hence the Landau damping of twoiondusty plasma waves is substantial.
Contents
 D. Spałek:
Fourth boundary condition for electromagnetic field
 The paper deals with the problem of boundary condition formulation for an electromagnetic field.
The nonlinear boundary condition has been proposed. This condition has been introduced
on the basis of Maxwell's equations. The nonlinear condition includes three wellknown boundary
conditions of Dirichlet, Neumann and Hankel. An example has been provided to show the usefulness
of the boundary condition proposed. The fourth boundary condition enables us to reduce the region
of numerical analysis.
Contents
 K. Kroszczyński:
The properties of a strange attractor reconstructed from
the time series of tropospheric mean temperature
 The correlation dimension and Lyapunov coefficients for a dynamic system constructed
on the basis of tropospheric mean temperature time series are presented. The calculations
proved that the attractor is strange and his geometrical structure is fractal. The attractor's
strangeness results from the existence of positive values of the Lyapunov coefficients.
Based upon these results, the estimated time of the dynamic system prediction is 13 days.
Contents
 S. Apanasewicz and S. Pawłowski:
Using improved impedance boundary conditions
to derive distributions of electromagnetic fields
 In this paper the improved boundary condition of impedance type the harmonic lowfrequency
electromagnetic field calculation is presented. It is based on the application of successive
approximations in twodimensional case. As an illustration of the presented method the calculation
of electromagnetic field in the neighbourhood of metallic wall is given. A comparison of approximate
solutions with the exact one is done (Figs. 38).
Contents
 S.K. Ghosh, D.K. Nandi:
Magnetohydrodynamic fully developed combined convection flow
between vertical plates heated asymmetrically
 Magnetohydrodynamic (MHD) fully developed flow of a viscous incompressible
electrically conducting fluid in a vertical channel during combined convection, with asymmetric
heating of the wall, under the influence of a constant pressure gradient and in the presence
of an uniform transverse magnetic field, is studied. Exact solution of the governing equation
is obtained in a closed form. The solution in a dimensionless form contains two pertinent flow
parameters, viz. M (the Hartmann number) and G_{r} (the Grashof number).
The limiting cases of a MHD forced and free convection are analyses, what has not been done earlier
in the literature. The occurrence of flow reversal indicates that there arises a flow reversal
at the cold wall when r_{T} = 1 while,
for r_{T} < 1,
no flow reversal is possible in the absence of magnetic forces.
Contents
Reprints of the full papers may be obtained from their authors.
Contact Editorial Office in case you need
the address of the respective author.
