we consider a mixed boundary value problem for a quarter-plane with a robin condition on one edge. we have developed two procedures, one based on the advanced theory of dual integral equations and the other, in our opinion simpler technique, relying on conformal mapping. both of the procedures are of interest, because the former may be easier to adapt to other boundary value problems.

Cassava mosaic disease (CMD) and cassava brown streak (CBSD) are two important biotic constraints affecting (Manihot esculenta Crantz) production in sub-Saharan Africa, the deployment of varieties dually resistant to both diseases is most effective realistic way reducing losses. Crosses were carried out between a Tanzanian local cultivar (Namikonga) South American genotype (AR37-80) develop dua...

We study the use of two dynamic thick holograms to realize isotropic two-dimensional (2D) differentiation under Bragg diffraction. Acousto-optic modulators (AOMs) are used as volume holograms. Using a single hologram, we can accomplish first-order derivative operation, corresponding selective edge extraction an image. Since AOM is 1D spatial light modulator, filtering image only occurs along di...

The parameters of a q-ary MDS Euclidean self-dual codes are completely determined by its length and the construction with new has been widely investigated in recent years. In this paper, we give further study on via generalized Reed-Solomon (GRS) their extended codes. main idea our is to choose suitable evaluation points such that corresponding (extended) GRS self-dual. Firstly, consider set co...