Because of the fact that the coefficients of (5) depend only on the parameter Λ, which is constant with regard to θ and z, and with regard to h, which is a periodical function on θ, one finds, as a result, the solution of the equation is periodical: begin{aligned} p(theta,z =p(theta+2pi,z). end{aligned} (9) It is easy to see that the equations of the mathematical model are nonlinear.
However, it could be considered a periodical function by parts, being defined as a range of period T equivalent to the radial distance to be studied.
The dissimilation of a maintainable system, (D_{m}), is described by a periodical function with recovered availability corresponding to the maintenance cycle T as follows: begin{aligned} D_mathrm{m} =left{ {begin{array}{ll} k, 1-mathrm{e}^{-t-T'}), 1-mathrm{et<0 k,(1-mathrm{e}^{-t-T'}&quad nTle t<(n+1)T,&quad, end{array}} righT'le
In our particular case, we do not have a periodical function.
SIMS characterizations of the intensity variations of the ejected secondary ions of the present elements as a function of sputtering time of the primary ion beam exhibit that there is a periodical variation of the intensity of O ion and Ti ion with the sputtering time (Figure 2), while the intensity of C ion exhibits an inverse periodical variation with the sputtering time.
Tess: A micro-magazine is a periodical stripped of all unnecessary content.
It's a periodical package and a total mystery.
Eight years later, it's a periodical pinup.
PSIT is a periodical administration of a vaccine only before the pollen season.
Fourier Series Expansion: the basic idea of these series is that any periodical function (T) can be expressed as a trigonometric sum of sines and cosines where their frequencies are multiples of the fundamental frequency ω0, but at the same intervals in which the function is defined.
