Wave Propagation in an Optimized Tunable Multi-channel Flter based on One-dimensional Nano Superconductor Photonic Crystal

Although there has been a focus on THz lters so far, there is a signifcant defciency in advancing low-temperature THz lters. According to the needs, we proposed a tunable THz lter that selectively permits the desired incident frequencies to be propagated in relevance with our purpose. The presence of a low-temperature nano superconductor and an undoped semiconductor layers in the proposed structure resulted in a multi-channel THz lter, which could be highly tuned with several parameters such as lattice constants, applied temperature, etc. The achieved transmittance spectra revealed that the emerged transmittance couples and stacks follow exact regulations. Furthermore, the structure exhibited omnidirectional band-gaps for both TE and TM polarized waves. Moreover, the use of a central defect layer gave some transmittance defect modes in the forbidden areas. This structure could be used in some THz devices such as switches, optimized sensors as well as in space industry and telecommunications.

Overcoming the Semantic Barrier and Developing the Ability to Use Communicative Tools Part I. Issue. Method

The article is devoted to the problem of the functional structure of communicative action. Based on theoretical analysis and many years of pedagogical experience of working with children with affective pathology (autism spectrum disorders), the author recreates and refines the studies of cultural-historical theory and answers its main question — a method problem: the influence of holistic interfunctional analysis on overcoming semantic bias (central defect and syndrome-forming factor of psychopathology) and the development of a more universal communication form — verbal communication in non-speaking children with autism spectrum disorders in preschool age (by means of restructuring the way the impaired function is realized). The described conditions can be taken into account when constructing an intermediary (lively communicative action) both in the practice of general education (to prevent the occurrence of motivational disorders and increase the age limit) and in working with children with affective pathology (especially with children with autism spectrum disorders).