Ryazan State Radio Engineering University Research Articles

Development of e-learning resources for distance learning in the field of radio engineering

The article presents the analysis of the results of electronic educational resources development in the field of “Radio Engineering”, registered by the authors of Ryazan State Radio Engineering University after V.F. Utkin in the United Foundation of Electronic Resources «Science and Education». Under epidemic constraints, the higher education system is faced with the need to provide distance or blended learning, with no loss of quality. The basis of distance learning consists of electronic educational resources of different formats, which allow providing information interaction of all participants of the educational process: students, teachers, administration. The object of research is electronic educational resources. The subject of the study is electronic educational resources in the field of radio engineering, developed at Ryazan State Radio Engineering University. The research methods are statistical, logical and semantic analysis methods. The information on electronic resources is selected from the database of the United Fund of Electronic Resources «Science and Education» for the period from 2019 to 2021. Statistical processing of database records is automated, carried out with the help of software developed by the specialists of the “Science and Education” pool of electronic resources.

STIMULATING AND TOXIC EFFECTS OF COPPER AND COBALT NANOPOWDERS ON RICE SEEDLINGS

Metal nanopowders have a stimulating effect on the growth and development of plants. The biological activity of nanoparticles depends on size, concentration, and chemical composition. Nanoparticles require further study because they have a wide range of applications in medicine and agriculture. Being biocompatible, copper and cobalt can play the role of growth stimulant, are not toxic and can be used for contact with living systems. The object of study was rice, as an economically important culture. The study addressed the effect of cobalt and copper nanoparticles on the germination and development of rice seedlings. The optimal concentration of ultrafine solutions of these nanopowders for pre-sowing treatment of seeds was determined. Although copper and cobalt have different chemical nature, the nanoparticles show similar impact and doze-dependent effect. Minimum concentrations of the nanoparticles had a positive effect on the morphological and biometric indicators of sprouts. The activity of oxidase enzymes was measured and it showed a reversible nature of oxidative stress. An increase in superoxide dismutase activity and a decrease in catalase activity by less than 30% indicates the stress resistance of rice sprouts and the absence of phytotoxic effects of the nanopowders. The presence of these metals in the seedling homogenate was determined to define the toxic effect. The electron microscopic analysis of the partition of metals in the tissues of experimental plants did not reveal significant deviations from control values. The experiments were performed using scientific equipment of Regional Center for Collective Use of Probe Microscopy in Ryazan State Radio Engineering University.

Visual Web-Oriented Environment of Dynamic Control of Data Flow in Campus of Software Defined Networks

Nowadays new innovative approaches based on the technology of software defined networks (SDN) are gaining popularity in the field of computer networks (CN). SDN provide a flexible approach to the processing and control of data flows in CN by separating the control plane and data plane, as well as centralizing the representation of the entire network. In this paper, we propose a software infrastructure and a visual web-oriented environment (SIVE) for dynamic control of data flows in campus SDN based on OpenFlow protocol. It was proposed to use the SIVE as an integrated segment of the campus network of Ryazan State Radio Engineering University. The aim of the work is the development of the SIVE architecture in the form of UML class diagram description, as well as the creation of software methods for organizing effective network interaction of various software systems in SDN based on OpenFlow protocol. A hardware-software test bench based on HP Aruba 2920-24G equipment was developed to confirm the efficiency and reliability of the proposed SIVE. The offered SIVE is the basis for the development of a large class of software systems and SDN components based on OpenFlow protocol.

Электрические нагрузки Рязанского государственного радиотехнического университета за август – октябрь 2017 года

In the article the authors considered electric loads for the period of August – October 2017. The values of mathematical expectation, dispersion, standard deviation, coefficient of variation of electrical loads, as well as the maximum and minimum of load values per day, month, quarter are determined.

Multimag chronomagnetotherapy system life cycle maintenance

Seven stages of high-technology medical equipment life cycle are described. The Multimag chronomagnetotherapy system is used as an example to trace the implementation of the seven stages of the system life cycle by a collaboration team from Ryazan State Radio Engineering University and Kasimov Instrument-Making Plant.