This article presents a systematic review of methods for ensuring the trustworthiness and authenticity of devices in the Internet of Things (IoT) ecosystem. Key vulnerabilities, architectural features, and resource constraints of IoT systems that determine the choice of security mechanisms are analyzed. Cryptographic solutions, dynamic trust models, access control approaches, and authentication protocols for industrial and distributed environments are considered. A comparative analysis of methods identifies relevant research gaps and identifies promising areas for developing comprehensive, adaptive security systems for heterogeneous IoT infrastructures.

Keywords: Internet of Things system, security, reliability, authenticity, devices, methods

In persisting article is offered structure and functional composition of the programme modules of the tools of the analysis dynamic mechanical systems of the class tooth issues. In change from existing, proposed programme complex contains the extended composition of the modules. This enables, in particular, check convergence iteration computing processes, way to visualizations of the current importance of the full kinetic energy of the fluctuations of the under investigation mechanical system. The broughted composition each of block of the programme complex, with detailed description of the purpose included modules into them.

Keywords: The mechanical system, tooth issue, modeling, programme complex, dynamic of the system

The represented approach of dynamic process modeling is based on the technology of automatical semantic text analysis. An associative network is forming during text processing. Its key notions, including  lexical and psycholinguistic markers of the analyzed process, are ranked by theirs semantic weight. The weight being multiplied by marker status value at the scale of “good-bad” gives its contribution to the process stage characteristic. Transformation of the accumulated for all of the markers process characteristic from one period of time to another one is characterize a direction of the process.

Keywords: automatical text processing, associative (homogenous semantic) network, process dynamic modeling, social processes, lexical and psycholinguistic markers

To date, the main method of mass production of advanced functional materials for various purposes is the ceramic technology. In the manufacture of multi-component oxide compounds using of ceramic technology is difficult to achieve high uniformity of chemical composition. For activation of the raw ingredients and make it more uniform use of chemical-tions (co-precipitation of salts or hydroxides, spray drying, Cryochemistry) and physical-tions (mechano-chemical, microwave, ultrasonic) methods. The paper presents the results of work on obtaining Ni-Zn-ferrite 2000NN radiation-thermal sintering. The influence of base composition and alloying additions on the electromagnetic properties of the ferrites. Confirmed the effectiveness of the use of surface-active additives To increase the density of the raw pieces and level parameters. We propose a model that explain schaya efficiency of dopants in the radiation-thermal sintering.

Keywords: Nickel-zinc ferrite, radiation thermal sintering, base composition, alloying additives, permeability

Combined method which allows analyzing parameters of the nanoscale atomic and electronic structure of materials relying on three different methods (x-ray absorption spectroscopy (XAFS), x-ray diffraction (XRD) and Raman spectroscopy) was developed. The method was applied for the study of nickel oxide nanoparticles, which serve as an efficient catalyst for the artificial photosynthesis process. 

Keywords: solar energy, artificial photosynthesis, NiO, Raman, x-ray diffraction, XAFS