This paper analyses intrusion detection techniques and provides recommendations for preventing intrusions in peer-to-peer wireless networks. Peer-to-peer wireless networks are particularly vulnerable to attack due to their openness, dynamically changing topology, collaborative algorithms, lack of centralised monitoring, centralised control point and lack of clear protection. Intrusion detection techniques exist in wired networks but they are not applicable in wireless environment. The paper also presents a new intrusion defence method based on intrusion detection in peer-to-peer wireless networks.

Keywords: security, vulnerability, information protection, attack, intrusion, wireless network, mobile network, detection system, IDS, MANET, DoS, DDoS

This paper presents the process of developing an algorithm that is able to extract style and content from two different images and create a new image, preserving the content structure of one image and simultaneously applying the stylistic characteristics of the other image. This algorithm is able to adapt the style of one image to the content of the other image, creating unique artworks.

Keywords: neural networks, style transfer, image, machine learning, algorithm, dataset, software

Security vulnerabilities are always a burning issue that website administrators spend a lot of time on researching in order to keep the website running securely. These vulnerabilities allow hackers to exploit, attack, infiltrate and influence the data of any company's websites. For stable, smooth and secure website operation, it is necessary to know the basic information about website security vulnerabilities. This article analyses the methods of detecting website vulnerabilities and applying effective measures to ensure website security. The article provides current challenges in the field of information security, describes methods of vulnerability detection and gives recommendations for the application of specific measures to secure websites.

Keywords: website security, vulnerability, information security, code, software, security vulnerability scanning

The construction industry plays an important role in the national economy, and the products of construction industry enterprises are essential for economic growth and development of the state. At the same time, the current state of affairs in the construction industry is characterized by the presence of economic uncertainties and other restrictions. One of the main directions of development of the construction sector, as well as other sectors of the national economy of the country, is expanded reproduction in the conditions of import substitution, which determines the search for the most promising territories for the location of new construction industry facilities.

Keywords: construction, construction industry, construction complex, strategic management, import substitution

Currently, one of the most promising and cost-effective methods of seismic isolation is the use of passive energy dissipation systems. The research carried out in this article focuses on the use of a new hybrid energy dissipation device that combines a parallel layer of an inexpensive viscoelastic material and a metal component. Typically, the viscoelastic material in such systems is attached to steel shock absorbers with an adhesive. In this article, the behavior of a viscoelastic material is studied when it is attached to a metal component without the use of glue, being held only by friction and pressure. The influence of the compression force on the elastic and damping properties of a viscoelastic material arranged in a seismic damper has been established, and the pressing force has been determined, which ensures the optimal functional properties of the viscoelastic material.

Keywords: earthquake, seismic safety, damper, thermal expansion, viscoelastic material, rubber compound, rubber, resin, polymer, vibration, seismic isolation

The problem of studying the peculiarities of sound propagation in shallow seas is an urgent task of hydroacoustics, since it is associated with human production activities in coastal zones and waters of shallow seas. A shallow sea for a sound field is a waveguide in which certain modes propagate. Features such as "extinction" modes and dispersion distort the picture of the sound field. There is also a complex interference situation due to reverberation interference and multiple re-reflections. To avoid information loss, it is proposed to use narrowly directed parametric radiation without side lobes. The issues of equipment selection are considered, the law of temporary automatic gain control (TAGC) for the study of bottom layers is calculated. The results of the analysis of echograms for depths of 1-2 m are presented. The possibility of identifying layers and anomalies is shown.

Keywords: shallow sea, sound propagation, modality, waveguide, TAGC's law, structure data, layers, profilograph, anomalies

The article considers internal adjustable sun-protecting jalousies from their different functional efficiency pant of view. It is noted, that besides their main sun-protective function, adjustable jalousies possess some other functions, depending on the position of their horizontal planks. These functions can be successfully used for microclimatic internal environment creation of comfortable. These are natural lighting function, psychological contract with surrounding environment function and function of visual isolation, i.e. “privacy”. and so on. All the above functions usually have maximum efficiency of their qualities in the case of their individual consideration. This, as a rule, is not practically reasonable. That is why this work is aimed on optimum combination of the man functional characteristics of horizontal sun-protecting jalousies under necessity of their mutual consideration, i.e. in achievement of their functional universality.

Keywords: sun-protecting devices, horizontal jalousies, functional characteristics, comfort of internal environment, optimization, insolation, visual comfort, functional universality, natural lighting

The article describes a model that allows to conduct research and justification of the choice of operating modes of departmental network information objects functioning in distributed data transmission networks in conditions of unauthorized actions aimed at overloading network information objects with incorrectly fragmented message packets. The developed model allows to formulate requirements on improvement of indicators of timely granting of service possibilities to subscribers of departmental data transmission networks and also maintenance of availability of the processed information in the conditions of high intensity of an exchange of message packets with incorrect parameters of fragmentation through monitoring of failures (failures) of defragmentation of message packets and adaptation of parameters of a communication route to change of structure (parameters) of a data transmission network.

Keywords: data network, departmental network information objects, IP datagrams, packet fragmentation

The article addresses issues related to the definition of particulate matter characteristics in the air of roadside areas. Fine suspended solid particles (TPM) of different size -10 and 2.5 μm are one of the main characteristics of atmospheric air quality. When monitoring the air environment on the maintenance of the firm weighed particles two indicators are used and normalized: PM2.5, PM10 are the firm weighed particles (English Particulate Matter, PM) with an aerodynamic diameter of 2.5 microns or less; Solid suspended particles with aerodynamic diameter of 10 microns or less. Dust particles from traffic are seen as an increasingly important source of air pollution, as the vehicle fleet is increasing worldwide, hence exhaust gas emissions, as well as particles from tire abrasion and road surface wear. Studies were carried out on the dust content of the roadside territories of the city of Volgograd. The article also pays attention to air quality indices, which will be used in monitoring the air environment of urban areas.

Keywords: motor transport, dust, road dust, the firm weighed particles, PM2.5, PM10, the atmosphere, the air environment, ecology, ecology of the urbanized territories, environmental safety

An important problem of modern ecology is air pollution for most cities. Studies show that the largest danger to the human body is particles up to 10 microns in size, therefore, the content of suspended solids PM10 and PM2.5 (concentration) is controlled. The article presents the results of studies of air pollution with fine dust in the winter season

Keywords: dust, dispersed materials, suspended solids, PM2.5, PM10, atmosphere, air, ecology, ecology of urban areas, environmental safety

The simulation of a multilayer structure in the finite element Ansys complex is considered. The design consists of 10 layers, each of which has certain specific properties. The model is an imitation of the soil base pavement. We consider the simulation in the form of a simplified, flat statement of the problem. The analysis of the oscillations under impact. The wave field of displacements at a given part of the structure is analyzed. Based on a numerical experiment, an approach to estimating the characteristics of a layer is constructed.

Keywords: multi-layer construction, vibration diagnostics, simulation, FEM, Ansys, pulse action, dynamics, fluctuations

The article considers the solution of the problem of determining the dynamic characteristics of the relative humidity sensor, the mathematical model of which was based on the first order aperiodic link. The solution algorithm consists in minimizing the value of the standard mismatch of the approximating function and the set of experimental data. The results of processing experiments with the DHT-22 temperature and humidity sensor are presented. The sensor was placed three times in a medium with high humidity, which allowed to obtain an average experimental transient response. The period of measurement and registration of humidity and temperature was 1.5 seconds. The proposed method of calculating the dynamic parameters of the sensor allowed to determine the value of the time constant and the gain of the aperiodic link for the sensor under study. The obtained dynamic characteristics can be used to form an inverse transfer function for the humidity sensor.

Keywords: capacitive humidity sensor transient response, the sequence of measurements, the time constant, the minimization of the error

Fire-retardant gypsum solutions on exfoliated vermiculite were studied using volcanic ash and the multi-functional additive D – 5. It was revealed that the introduction of the D-5 additive by weight from the binder significantly speeds up the setting time of the composite gypsum solution on the expanded vermiculite. gypsum-vermiculite solutions with additives of Portland cement and D – 5 have a higher water resistance.The compositions of composite gypsum solution on exfoliated vermiculite and ash have been developed. It has been established that volcanic ash of a fraction of 0.0–0.315 mm can be replaced by expanded vermiculite without a noticeable increase in average density. Additives of Portland cement and D – 5 increase the strength of the gypsum composite vermiculite solution with ash, the softening coefficient of the composite increases to 0.75.

Keywords: gypsum, portland cement, expanded vermiculite, volcanic ash, additive D-5, fire protection, gypsum vermiculite solution, tensile strength at bending and compression, average density, softening coefficient

In article the method of network seismic fields which allows to determine the geoseismic parameters of soil thickness giving seismic characteristic of soil is considered. The average values of speeds of longitudinal and cross waves characterizing the generalized geoseismic section are defined. On the basis of high-speed and density characteristics of soil calculations of increments of seismic intensity concerning parameters of reference soil are executed

Keywords: seismic characteristic of soil, speed of longitudinal waves, speed of cross waves geoseismic section, spatial borders of a geological object

The question of improvement of transportation of building structures and products is considered. The possibility of reducing losses is studied. Measures to prevent the destruction of semi-finished products during their transportation are proposed

Keywords: organization of construction; economy of construction; organization of production