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In this paper, a computational method to predict the dimensional changes in some powder metallurgy materials is used. The samples prepared from pre-alloyed iron base powders produced by atomization (< 45, 45-63, 63-100, 100-150, >150?m) were the materials analyzed in this paper. The analyzed powders were compressed in a mold using uniaxial pressing at 400 and 600 MPa with the disc dimensions of ? 8 ? 6 mm. The sintering temperature was approximately 1.150 °C for 60 and 90 minutes. The density in green and sintered...

Vulnerability may be considered one of the most important components of the seismic risk, as it is the only one that human society may act upon in order to reduce the risk. As seismic vulnerability implies multiple dimensions, from the physical one to the social and economic ones, a multi-criteria decision-making approach proves to be appropriate for its assessment. The uncertainty inherently involved in the assessment process is addressed using fuzzy logic theory. This paper aims to assess the seismic vulnerabili...

The objective of this work is to present the implementating of an employees? performances assessment process in the Heating-Ventilation-AirConditioning (HVAC) department of a ship design company, using the multi-criteria decision method. It is useful and important to optimize this process in the ship design companies because at present the way how to carry out the performance assessment can lead to a series of important errors such as: error of dispersion and of central tendency, error of "logical" evaluation, hal...

The article presents the results of one of the stages of research, the purpose of which is to increase the speed of video data transmission from a source to a processing center. It is shown that one of the approaches to achieve the given goal is to reduce the amount of information for transmission through the partial transferring of frames of the video stream. This possibility is provided by the three-dimensional representation of blocks of frames in the form of a bit cube, which described in the article. The idea...

Last decades witnessed a significant increasing in energy consumption in data centers and server rooms. More powerful equipment and more complex IT services have been driving to more power demand. Since infrastructure and energy costs in data centers have become a central factor in IT management, a range of technologies has been developed to increase energy efficiency. New hardware and power management options support energy saving strategies. An appropriate procurement plan is essential for building an efficient ...

The article presents the results of the analysis of the dependence of the effectiveness of requests submitted to scientific competitions from the criteria for their evaluation. Statistics of requests submitted to external competitions from ITMO University was obtained from the implemented automated system for requests recording. This system performs the functions of formation of the register of requests of the organization, and also allows to check the requests for their compliance with the requirements of the sel...

The paper deals with the actual problem of assessing the quality of video content transmission in modern wireless networks. A review and analysis is made for the quality level of the currently most popular protocols and technologies for transmitting video content in wireless networks. It analyzes video content transfer technologies based on the HyperText Transfer Protocol (HTTP), namely HTTP Progressive Download (HPD) and HTTP Adaptive Streaming (HAS). For HTTP Progressive Download and HTTP Adaptive Streaming tech...

Network slicing is one of the key features of fifth generation (5G) system. Network slice is a virtual network including Radio Access Network (RAN) and Core Network (CN). The most typical scenario of utilization of network slicing is the setup of multiple slices within a single operator in order to cope with different User Equipments (UE) and service requirements. In alternative scenario, network slicing may be provided as a service, i.e. network slices may be setup and modified by 3rd parties. Currently network s...

According to statistical studies, a large number of IT projects end in failure. One of the rea-sons is the complexity of transferring the originally inherent meaning into the system. As you know, any project should be implemented and should be understood by the performer. According to researchers, the cause of the current situation is the inconsistency of the form (meaning) of the target system, which arises due to a misunderstanding between the actors involved in the development at different life cycle stages. Th...

In the present study, the mechanical properties of some iron-based sintered alloys prepared by powder metallurgy route were predicted using Artificial Neural Network (ANN) approach. Artificial Neural Networks (ANNs) are important tools used to predict the complex processes with many variables and interactions. In order to prepare the sintered compacts, the powders prepared from pre-alloyed iron base powders produced by atomization (< 45, 45-63, 63-100, 100-150, >150 ?m) were the materials analyzed in this paper. T...

The paper proposes an analytical and simulation model of a sensory distributed wireless traffic control system on the roads of urban and rural settlements. The results of an analytical review of neurophysiological studies of the visual behavior of drivers, depending on the boundaries of the outdoor advertising area in the roadside, are presented. The technologies for collecting and transmitting data from the wireless monitoring of the road traffic situation were analyzed. A method is proposed for determining the p...

The most challenging question is protection the authentication process in the cybersecurity. Since a lot of companies decide to store their data in the cloud services, it is crucial to secure the authentication process here. The authentication is the most vulnerable process because of its simple identifying weaknesses. It is used by all attackers that make their attacks destroying and more accurate. The hackers use it for the identity thefts or other cybercrimes. First, I need to research all current threats to th...

The core of solution is a design of special codes inserted into the list of coordinates of the measured points. These codes have to contain information about topological concepts in such a way so that we can automatically create topologically correct drawing in an appropriate software from the above mentioned list of coordinates obtained by geodetic measurement. At present there are a lot of software applications which try to solve this problem on the basic of continual drawing. One of them is e. g. a possibility ...

Building reliable electricity consumption forecasts is of particular importance for a number of reasons: technological, economic and environmental. The high quality of planning contributes to the formation of an effective operation mode of the Unified Energy System thereby minimizing the consumption of energetic resources and economic costs of forcing the ?generation-consumption? equilibrium. The task of the forecasting is computationally complex, and the development of a cloud solution that will assist in its sol...

The subject of cybernetics is the control processes occurring in complex dynamic systems. Such systems are constantly encountered in industrial activity, in natural science and society. The goal of cybernetics is the development and implementation of scientific methods of the managing complex processes to increase the efficiency of human labor, in order to find the most rational ways for the interaction of computer and natural intelligence. At the present stage, these processes have gained rapid growth in all sphe...

This paper suggests that in order to create efficient backup and recovery strategy for database management system, an appropriate unit of analysis and a proper, data is needed. Key factors for evaluating backup and recovery are time needed to bring the system back online and the amount of data loss. The paper examines methods for managing these factors in three of the most popular DBMS ? MySQL, MS SQL Server and MongoDB. Each of them has a set of backup types that can be combined in different strategies. Depending...

The article is devoted to the study of the effectiveness of various statistical models of the probability of bankruptcy of enterprises based on the examples of the modified Altman model and the model of Sayfulin and Kadykov. A comparison of the results of applying these models showed that in many cases they give opposite results. The reason for the differences is that the Altman model is based on statistics of bankruptcies of American enterprises in 1946-1965, and the model of Saifulin and Kadykov is based on stat...

From 1994 to the present, records of deformations of the Earth?s crust, which are measured by a laser displacement meter, called ?deformograph?, are regularly recorded. This meter records changes in the distance between the mirrors fixed on the rock inside the mountain gallery in two directions: North-South and West-East. Such observations are carried out in the Gorny Altai region, in Kazakhstan and near Lake Baikal. One of the long-acting deformographs is installed in the gallery of the Talaya seismic station in ...

There are some relevant problems at prospecting-metallogenic analysis of perspective areas: 1. definition of expected formation (mineral) type of mineralization; 2. estimation of the scale of predicted ore mineralization; 3. outlining of the closest analogue from etalon deposits. During formalization this problems can be determined as the problems of pattern recognition, when objects under study described in heterogeneous property space. The conceptual approach to technology support is following: 1. prospecting es...

The existing approach to data modeling allows to put in an information system only a structure for their factographic mapping. Meanwhile, in reality, data exists within the context which is some user's skill for obtaining them. In the previous study, a model for representing the user's skill was developed. This model represents data in a form of possible action, which, depending on the situation, allows obtaining the expected data. The developed model has such advantages as providing flexibility in accordance with...

Taking into account that nowadays the websites lacking at least one dynamic component or side is rare (ea. the contact form) the focus of the current paper is granted to the programming environments and the scripting languages used for producing and running dynamic websites. Among the most popular scripting languages the PHP outstands its competitors ASP.NET, Java, CFML or Python. Within this framework, with the aim of separating the content from the presentation of a website content selected aspects linked to the...

A modern feature of websites' creation aside from the PHP scripting language is the use of a database. It is acknowledged that PHP offers the possibility of an advantageous structure for the source code, yet its real capacity is highlighted when the programming language works together with a database. Among these databases one can enumerate MySQL, Oracle or PostgreSQL and the list can be easily extended. The PHP language has predefined functions and native connectivity with the above-mentioned databases. The curre...

The paper presents the decision support system (DSS) for mitigation and elimination the consequences of natural disasters, which consists of permanent functional and territorial subsystems. Functional subsystems are created to ensure the readiness of the forces and means subordinate to them to actions aimed at mitigation, reaction and elimination the consequences of natural disasters. These include a monitoring subsystem, a subsystem for creating a reserve of civilian forces and means of protection, a reserve of m...

The main scientific problem is the construction of methods for describing and analysing images that consider multilevel periodicity and the dependence of their fuzzy properties on the scale of observation. The vast majority of digital image processing algorithms are based on a precise algorithm for extracting useful information, which often does not allow vision systems to solve nontrivial problems. To date, a vast number of "fuzzy" algorithms (based on the use of the theory of fuzzy sets) have been developed, all...

The paper analyzes the existing data mining methods to predict heat consumption in buildings of public sector facilities. The highest accuracy in solving the regression problem was obtained using the ensembles of artificial neural network models of the MLP architecture, gradient boosting models on decision-making trees and linear regression models. The ensembles of the studied methods were used in the development of the analytical subsystem in the energy resource management system of the Belgorod Region. Approbati...

The main tasks and provisions of multiscale image processing of nanostructures are formulated, the feature of which is the use of the concepts of heredity and variability of characters. Heredity refers to the process of preserving traits on a sequence of images of a nanostructure as the scale of observation changes. Under variability refers to the process of loss of signs or the emergence of new signs on a multiscale sequence of images. It is obvious that images of nanostructures on scales at which there is a shar...

Modern scientific research centers require the fast, fault-tolerant storing systems for the collecting and processing of large amounts of scientific data originating from different sources and serving a great variety of client applications all over the world. This problem has great importance in many fields of science, such as geoinformatics, climate modeling, high-energy physics, astrophysics, and others. It is reasonable to use the concept of distributed computing to preprocess, normalize and aggregate scientifi...

In work the solution of a operational and confidential data transmission problem with the necessary quality level of decodifying in the conditions of continuous increase in volume of video content containing data on critical infrastructure objects is proposed. The mechanisms allowing to define availability of planimetric information at stage of color-difference transformation are developed. Evaluation of the work of the developed method is given. To increase the data transfer rate, it is proposed to encrypt only t...

Thermal springs are a true gift of nature, in which a person can find health and beauty. By the thermal springs are meant groundwaters with temperature more than 20 °C, which come to the surface. Also by thermal is often meant the source, in which the temperature is higher than the average values for the surroundings area. The healing properties of thermal springs are well known since ancient times - the ancient Romans built the terms around them. While taking baths, the warriors healed wounds received in the camp...

The article describes the solution of the problem of determining the pricing strategy of the enterprise, that operates at the window construction market with using an approach to a modeling multi-agent resource conversion processes. This approach is built on the basis of integration of simulation, expert, multi-agent and situational modeling methods. Agent-oriented simulation reveals and explains the mechanism of the emergence of a complex multi-agent system optimal behavior that consists of set of interacting act...

This paper deals with the effective usage of digital twin for managing and optimizing production in small and medium-sized companies. Simple and effective business operation is related to the necessary digitization of documents. A set of digitized information and production-related data are the basis for the creation of a digital twin. The use of a digital twin involves effective management, control and optimization of production within a set of several small and medium-sized companies with the same or technologic...

The paper deals with the inefficiency of data normalization in media stream processing applications. In the classical approaches, while building a relational database architecture, developers strive to maximize the normalization of the database and bring the business logic of the system to external applications. Normalization and business logic separation have reached their apogee in object-relational mapping systems. Telecommunication systems have their own specifics. Due to the requirements for the quality of se...

Digital ecosystems are considered socio-technical clusters of adaptive applications with different levels of context awareness, adaptability, and autonomy. Applications from a digital ecosystem must solve concrete problems but have to be computationally efficient, it will have to find a balance between the freedom of a system to self-adapt and the constraints that apply to obtain a correct functionality. A new model of context is necessary to facilitate the development of adaptive applications that evolve with the...

The development of computer science in recent years has enabled researchers in the field of hydraulic drive systems to address the concept of ?digital hydraulics?. Digital hydraulics refers to systems that use binary parallel-connected components or switching control elements which have discrete input values and can actively control the system. The concept of ?digital hydraulics? implies that the operation of digital hydraulic devices is based on the on/off principle, meaning that active area or nominal opening ar...

The problem of automatic geophysical facies classification from well logs has played a crucial role in the mining industry from the 1980s to the present day. During this period, many different approaches were proposed to cope with this task; they were based on the methods of machine learning and deep learning. This paper gives a systematic survey of modern effective solutions to the assigned problem. The comparison of the approaches to the solution which are described in the works of various researchers is present...

The research like this one is needed because we need to know what threats can lead to unwanted consequences as identity thefts, data misuse, a compromise, etc. The problem of saving personal data is severe. Since most people prefer storing their data in the clouds, the new problems accomplish it by various types of attacks on the authentication process itself. Attack by attack, they become more targeted. This is the easiest and fastest way to unauthorized take over other humans' files. The goal is determining the ...

Access time is the most influential factor in determining access of people to healthcare services, be them urgent medical services or related medical services. The analysis on access times to the current public health infrastructure highlights the uneven spatial distribution of the main public health infrastructures, and also reveals some areas with access restraints. In this case, work is needed to develop hospital infrastructure so as to eliminate territorial disparities in terms of access. We employed ArcGIS Ne...

This paper considers the task of motor transport enterprises territorial planning with regard to modern requirements for the urban development. Methods for solving problems of territorial planning using geographic information technologies are highlighted. The paper identified the placement factors inherent in this subject area and characterized by spatial, temporal, and pragmatic features. Given the spatial nature of the task input data, it is proposed to use geo-information modeling as an effective means of solvi...

In the Czech Republic, in order to optimize crisis management processes on both the national level and within self-administration bodies, aiming to prevent or minimize consequences of emergency and crisis situations, provision of operational system for rescue and recovery work and other measures for crisis situations, and an effective information support are necessary. Therefore an appropriate geographic information systems of crisis management were designed and are now being utilized. An applied research method w...

Currently, we can see a gradual transition of economic actors to the conditions of digital economy. In this context, the penetration of information technology affects an increasing number of human life areas and enterprises? activities. Keeping this in mind, it becomes obvious that geo-information systems usage has affected many areas of industrial activity. Usage of geo-information systems allows a qualitatively new level to provide the enterprise with an information base and can solve a whole range of technical,...

The runoff of arctic and subarctic rivers is an important factor to be considered in climate change. The throughput of river beds has a direct impact on runoff and is influenced by many geographical factors. To date, there is no established methodology for quantitative assessing throughput of river beds in the face of climate change. We present the results of the development of geoinformation technologies to quantify throughput of Arctic and subarctic river beds while climate change. As a methodological basis, we ...

In the framework of the international project Alliance for Disaster Risk Reduction, with acronym: ALTER, funded under DG ECHO external line funding schema, international team from Cyprus, Greece, Armenia and Bulgaria are having as main goal to create hazard maps for vulnerable areas in Armenia where potential dam breaks and flood events afterwards are possible. The presented work will show an approach for dam break analysis with potential flood zones in the downstream of the dam. The calculated affected zones and ...

A few years ago, I start asking myself how my profession (i.e. accountant) will change under the IT impact and how AI would affect humanity. I consider this article provides important answers for the accounting profession since last technologies are capturing new horizons and particularly, accounting is changing under the IT signature. This paper intends to emphasize the changes which accounting will support under the emergence of new technologies and how much AI marks accounting in this technological environment....

One of the perspective directions of simulation and modeling tool development is the problem orientation, which allows reducing the requirements that presented to a knowledge level of end users in the programming area essentially. Using the software package in a system for dynamic modeling of multi-agent resource conversion processes (MRCP) BPsim (Business Process Simulation), a simulation model of the workstation workflow was built to make experiments to determine the workload of posts and identify bottlenecks in...

Natural vegetable juices contain the essential vitamins and nutrients for human body. Therefore, they represent a good opportunity for the treatment and prevention of various diseases. With the vitamins, taken through the juice, the human body becomes more resistant to viruses and infections, stressful situations and intense physical stress, the metabolism is being normalized. Fresh vegetables and fruit juices contain organic acids and mineral substances (potassium, calcium, iron, copper, magnesium, phosphorus, ma...

Companies with financial stability and relatively good market share usually invest in software for supply chain management. IT can be used to transmit real-time market information for real demand on the supply chain. The analysis of the current development of the IT sector and the good practices for SCM software application, determine the need to formulate some novelties regarding information sharing with upstream partners. The aim of this article is to give some methods for information sharing in supply chains wi...

The article presents an information system for monitoring and managing the quality of medical devices (apparatus, equipment, tools) in medical institutions in order to ensure effective and high-quality diagnosis and treatment of patients. To develop the structure of the information system, the stages of the life cycle of medical devices in a medical institution are considered on the example of the Central City Hospital No. 2 named after A.A. Mislavskiy of Yekaterinburg city, Russia. Personal account cards, mainten...

The purpose of this study is to create an information system that allows for predicting the results of football matches primarily focusing on teams in the Russian Premier League (RPL). To predict the results of matches it is possible to use various approaches that take into account a large number of different factors. This work is devoted to the study of patterns of outcomes of matches, depending on the place occupied by a team in the championship. During the season, teams can occupy the predicted and desired plac...

The Ore Mountains in the Czech-German borderland (Central Europe) were depopulated after the 2nd World War. The rapid population decrease affected the industry that used to be in this region for ages and almost all the industry in the Czech side of the Ore Mountains vanished. More than 240 vanished objects (factories, technical objects, manufactures) were identified during background research and the field survey in the area of interest. Based on the history and depopulation of this region, the vanished objects ma...

The article deals with the modeling of the structure that combines virtualization technologies and an e-learning system. It also describes the logical structure of the system under study, static and dynamic models. The most popular learning management systems have a modern website interface of the e-learning course, many necessary features for providing remote e-learning for different categories of users. However, these systems do not involve the use of a virtual application software environment or shell required ...