The possibility of using the optimization methods in realizing a given linear transformation of patterns by optical system is discussed. Furthermore, we have developed a method for characteristic expansion with discrete spectrum and also analyzed some problems pelated to concrete calculations.
The phase compensated far field distribution of laser modes TEMm0 and TEM0l is analyzed. It is shown that the characteristics of the far field distribution is substantially improved.
In this paper a universal real-time speech recognition system-RTSRS(01) is described. On the basis of the previous work[1], the parameters of a spoken command are normalized in the time domain. Using the binary spectrum as the final recognition parameters, which can largely reduce the amount of memory necessary for each reference command, and adapting a new method for calculating the separation be...
In this paper, a new method is proposed for the measurements of sound insulation of light structures using small samples. The sound source is placed in a reverberation room, and the receiving room is a small anechoic box. The arrangement of the measurement is described in betail. Several samples are measured and the results agree well with the mass law. The method does provide a useful alternative...
In the present paper, a method of calculating scattering field by a spherical mirror is introduced. Three coordinate surfaces of the spherical coordinate system are used to surround the mirror and separate the space into three regions, in each of which the general solution have been worked out, respectively. Then by making use of the boundary-condition, we obtain a group of equations, by which the...
1. After transforming the zone axis [uvw] of a FCC crystal into [utvtwt] of its twin or [u′v′w′] of the HCP phase formed in it, it is possible to recognize immediately from these indices whether the electron diffraction pattern of the latter is distinct from that of the former.2. The qpndition for the twin to have a non-distinct pattern is: u(t2)+v(t2)+w(t2)>u2+v2+w2. 3. The condition for the HCP ...
Superstructures are often observed in inorganic crystals, including many minerals and certain important solid state materials. In diffraction patterns of such crystals, superstructure reflections, which carry information of the structure details, are generally very weak. The common practice in structure determination is, therefore, to ignore the superstructure reflections at first, making use only...
In the presence of external sources, a superconducting weak link can be represented by a simplified model, consisting of a resistively shunted Josephson junction driven by a current source. We give in this paper, an analytical solution of the problem, in the case that the source current has both d. c. and a. c. components. As preliminary applications of our solution, we have also discussed square ...
This paper uses the Numbu method in Matsubara representation to extend the Eliashberg strong-coupling superconductivity theory for the case of spatial variance. The shell model solution for small particles is given.
The structure of the high magnetic permeability Pe-Si-Al alloy containing about 10 percent Al and 5 percent Si has been investigated. By using the foil specimen technique of electron microscope, the structure of matrix was found as ordered fcc Fe3(Al, Si) phase, its lattice parameter being 5.70±0.03?. This value lies between the values of the lattice parameter of Fe3Si and Fe3Al. This explains tha...