1,105 research outputs found
Step bunching of vicinal 6H-SiC{0001} surfaces
We use kinetic Monte Carlo simulations to understand growth- and
etching-induced step bunching of 6H-SiC{0001} vicinal surfaces oriented towards
[1-100] and [11-20]. By taking account of the different rates of surface
diffusion on three inequivalent terraces, we reproduce the experimentally
observed tendency for single bilayer height steps to bunch into half unit cell
height steps. By taking account of the different mobilities of steps with
different structures, we reproduce the experimentally observed tendency for
adjacent pairs of half unit cell height steps to bunch into full unit cell
height steps. A prediction of our simulations is that growth-induced and
etching-induced step bunching lead to different surface terminations for the
exposed terraces when full unit cell height steps are present.Comment: 10 pages, 12 figure
Project Analysis and Inflation
The implementation of effective investment projects that create added value
and ensure the GDP growth is essential for the modernization of the economy and
its transition to high-tech development path. The need for economic agents in the
implementation of investment projects appears when there is a need for the
development of business and the economy as a whole, and this need is generated in
the development strategy of the respective economic entity (or region, industry, the
country as a whole). The main strategic goal of business is to increase the market
value of the invested capital. Therefore, from the point of view of shareholders an
investment project is effective, when it provides the increase of the market value of
shareholders' or long-term creditors` equity
Nonlinear Two-Dimensional Green's Function in Smectics
The problem of the strain of smectics subjected to a force distributed over a
line in the basal plane has been solved
Qualitative features of periodic solutions of KdV
In this paper we prove new qualitative features of solutions of KdV on the
circle. The first result says that the Fourier coefficients of a solution of
KdV in Sobolev space , admit a WKB type expansion up to first
order with strongly oscillating phase factors defined in terms of the KdV
frequencies. The second result provides estimates for the approximation of such
a solution by trigonometric polynomials of sufficiently large degree
Low-energy expansion formula for one-dimensional Fokker-Planck and Schr\"odinger equations with periodic potentials
We study the low-energy behavior of the Green function for one-dimensional
Fokker-Planck and Schr\"odinger equations with periodic potentials. We derive a
formula for the power series expansion of reflection coefficients in terms of
the wave number, and apply it to the low-energy expansion of the Green
function
Tianjin University of science and technology
I have been studying Economics of Enterprise for 4 years. It fascinates me from year to year more and more. And now I am the student of two universities: Sumy State University and Tianjin University of Science and Technology (TUST) (Tianjin, China). I have never been to China before so I have known nothing about this country. My first impression was good both about the country and about people with their traditions and customs
Inverse Spectral-Scattering Problem with Two Sets of Discrete Spectra for the Radial Schroedinger Equation
The Schroedinger equation on the half line is considered with a real-valued,
integrable potential having a finite first moment. It is shown that the
potential and the boundary conditions are uniquely determined by the data
containing the discrete eigenvalues for a boundary condition at the origin, the
continuous part of the spectral measure for that boundary condition, and a
subset of the discrete eigenvalues for a different boundary condition. This
result extends the celebrated two-spectrum uniqueness theorem of Borg and
Marchenko to the case where there is also a continuous spectru
Metastability of life
The physical idea of the natural origin of diseases and deaths has been
presented. The fundamental microscopical reason is the destruction of any
metastable state by thermal activation of a nucleus of a nonreversable change.
On the basis of this idea the quantitative theory of age dependence of death
probability has been constructed. The obtained simple Death Laws are very
accurately fulfilled almost for all known diseases.Comment: 3 pages, 4 figure
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