The process of non-reagent adjustment of the pH of a NaCl solution (0.5 g/L) of different acidity was investigated by the method of bipolar electrodialysis on a device operating according to the K-system (concentration). The experiments were carried out in the range pH = 2.0–12.0 with monopolar cation-exchange MK-40 (for alkaline solutions) or anion-exchange MA-40 (for acidic solutions) and bipolar MB-2 membranes. The regularities of the change in the pH of the solution on the current density, process productivity and energy consumption for the neutralization process have been investigated. Revealed: with different productivity of the apparatus (Q = 0.5–1.5 m^3/h), in the range of pH 3.0–11.0, with an increase in the current density, a neutral pH value is achieved. It has been shown that at pH above 11.0 and below 3.0, even at high current densities (i > 20 A/m²), its value cannot be changed. This is due to the neutralization of the H⁺ or OH⁻ ions generated by the bipolar membrane by water ions, which are formed as a result of the dissociation of water molecules at the border of the monopolar membrane and the solution under conditions when the value of current exceeds the limiting value.

The widespread use of surfactants increasingly requires the development and application of reliable methods for the demineralization of wastewaters, preventing environmental pollution. One of the most reliable and effective methods of demineralization of wastewaters is the electrodialysis method. Studying the behavior of large organic ions in the membrane is important for modeling cell membranes and purification of medicinal and biological preparations. The sorption characteristics of the MA-40 and MK-40 ion-exchange membranes in solutions of simple and organic electrolytes, and in a solution of the surfactant were investigated. It was found that the sorption of organic ions by membranes is mainly of an ion-exchange nature. The moisture content and elasticity of the membranes decreases in solutions of organic electrolytes, during the sorption of which the membrane becomes brittle. A study showed that in the solutions of organic electrolytes, the MA-40 membrane retains high electrochemical activity, while the MK-40 in a solution of the surfactant completely loses it. From the data obtained in this work, it is shown that organic ions do not present a hazard when water is desalted by electrodialysis, whereas sorption of surfactant ions leads to membrane poisoning.

The primary aim of the paper was to to develop methodological bases for information protection management in computer networks to solve the scientific and practical problem of providing the necessary level of information security during the life cycle of the information security system in the conditions of uncertainty of information influences The object of the research is the information protection management system in the segment of the corporate information system. The subjects of the study are models, methods of intellectual support for information protection management, method for estimating and forecasting the level of information security (risk, violation of information security).

With the progress in manned and unmanned aircraft technology, the preparation of an operator of aerial vehicles becomes an important task, and its main assignments are training for piloting the aircraft to complex fly conditions and readiness to sharp transition from the remote control to handle control. De- spite the intensive use of aircraft, in particular, unmanned aerial vehicles, for solving military tasks, the scope of application of these devices is gradually ex- panding in the interests of solving peacetime tasks. Apart from delivering moni- toring of territories and objects, the delivery of goods, money, the creation of temporary radio networks for receiving and transmitting information and others are covering. To solve these problems, a qualified training of specialists serving this equipment is necessary. Based on the theoretical and practical training of the operator, criteria for evaluating the operator’s activities are justified and put forward. The evaluation model of the quality training process of specialists in the maintenance and operation of aircraft proposed. Examples of applying this model are given.

There are many systems on board of civil airplane for coordinates- measurements. Global Navigation Satellite System is used as a primary posi- tioning sensor. As a stand-by, positioning by navigational aids can be used in case of malfunction of the primary system. Both positioning systems, except in- ertial navigation system, are grounded on signals measurements and data trans- ferring via communication channels. In paper we study the main threats that can affect communication channels between different parts of navigation equipment and analyze its potential impact into positioning performance. We discuss inter- ference of radio waves, unintentional jamming and spoofing threats, threats of usage not valid air navigation data and missing optimal pair of navigational aids due too poor standard service volume model. As a result, a possible solution for each of these threats detection and minimization of their impact is proposed, based on improvements of data processing inside of Flight Management Sys- tem.