Browse

Stakeholders and project activities are related to the typical and usually necessary project components of: ideas, financing and implementation. Our aim is to illustrate useful steps in problem analysis, progressing from system characterization (analytical phase) to predictive modeling (synthesis phase). System analysis and multi-criteria evaluation are used to identify alternative scenarios regarding project goals. The model suggests that “public awareness” is best promoted in projects with a more balanced repres...

Currently, there is a serious increase in the use of various e-learning systems. The information technologies of the Learning Management Systems (LMS) platforms should use the possibilities of extracting and analyzing a variety of educational data during learning. Complete and visual learning outcomes are possible through the use of data processing techniques, Educational Data Mining (EDM) methods, and representations in various forms. Comprehensive analysis of data statistics and learning results will ensure high...

In 2011, we developed our application for B-imaging based on binary thresholding algorithm in a selectable Region of Interest. This application has been used in many studies focused on ultrasound B-imaging in neurology; primarily for substantia nigra echogenicity examination and also for some different brain structures, e.g. mediotemporal lobe atrophy investigation. One of principal output value is an echogenicity index which is used as a marker of the echogenicity grade. Many published studies showed that is well...

The paper examines the influence of vegetation season on canopy height models (CHM) derived from airborne laser scanning (ALS) data. ALS data were captured during the leaf-on (September 2011) and leaf-off seasons (April 2012) on the territory of the University Forest Enterprise of the Technical University in Zvolen, Slovakia. An automated procedures for deriving high-resolution digital terrain models (DTM) and digital surface models (DSM) were developed. CHM was calculated as the difference between DTM and DSM. CH...

The article deals with the issues of virtual reconstruction of memorable places associated with the life of M.V. Aseev in the Tambov province (Russia). Mikhail Vasilyevich Aseev (1858-1933) was a major Russian landowner, entrepreneur, influential industrialist and philanthropist. In 3D modeling programs (SketchUp, Blender) three-dimensional models of objects (buildings, utensils, etc.) were built according to known parameters (size, material), including both existing objects and lost or partially destroyed ones. U...

The universities in Bulgaria operate in a very dynamic environment. The Ministry of Education and Science (MES) changes annually the requirements that their systems must meet. Changes can be small and affect only parts of the information systems in use or impose fundamental changes. To cope with this challenge, each university has a choice - either to move to a high level of digitalization or to maintain a minimum digitization of processes, so that no correction is needed in them, thus increasing the hours of work...

The solution of environmental monitoring problems is often limited to the use of proprietary software, which can adversely affect costs, flexibility, and data integration. The need for environmental monitoring system is especially acute in the field of public environmental monitoring, where teams of potential users unite researchers from different areas of science from biology and chemistry to sociology and economics. Simulation technology of environmental monitoring involves three main areas of activity: observat...

The efficiency of a mining enterprise depends on the quality and timeliness of management decisions. Despite the fairly high scientific, theoretical and practical levels of development of this scientific direction, the abundance of software products on the market, the issue of effective technological management remains very relevant and important. The analysis performed by the authors made it possible to establish that the weakest link in existing systems is to take into account the relationship between the parame...

Irregular digital models (TINs), which are expensive, are used to model engineering structures, terrain surfaces and hydrography. Interpolation with regular digital models are more affordable at the expense of accuracy. There are many methods for interpolating surfaces, depending on the purpose, the appropriate models are selected. The paper presents bilinear, bicubic interpolation and interpolation with Bezier polynomials. The aim is to empirically compare the accuracy of interpolated surfaces with bilinear, bicu...

Most modern software systems use dozens of traffic types, which leads to the transmission of large volumes of data of three main types via communication channels: audio, video, and computer data. Such software systems are built on the basis of multiservice computer networks in which all data is transmitted over a single communication channel, which makes it possible to use common standards and simplifies the construction of a network capable of serving a large number of users. Thanks to these features, multiservic...

This work focuses on the possibility of practical application of two approaches ? classic least square method (LSM) and Huber?s M-estimator (HME) method ? to the analysis of time series of celestial objects? measurements. Using those methods, the values of dynamic selenophysical parameters were produced from the processing of observations of Mosting A lunar crater in relation to the lunar limb. The reason for the use of the two approaches ? LSM and HME ? at observations processing is that LSM in some cases does no...

The purpose of this research is to identify the key features and main components of the successful integration of cloud technologies into the infrastructure of modern business. This paper gives a general overview of cloud technologies, including the overall stages of their development, and highlights the main advantages of integrating cloud technologies into modern business. Cloud technologies are rapidly gaining popularity around the world. Besides business, they have spread to almost every person and have become...

Modern unmanned aerial vehicles (UAVs) are used to perform a wide range of flight tasks (military and civil), implemented both in autonomous flight mode and by remote control. One of the advanced technologies for their use is the organization of flying sensor networks (FSN). The quality of information exchange in FSN, widely used for monitoring of various natural and technical objects, depends significantly on the conditions of signal propagation and the level of external interference. A promising method for impro...

With each passing day consumers, including students and PhD students, expect more intelligent and personalized services. The key to providing such services is the concept of a personalized model. The purpose of the current research is to present adequate methods for creating a personalized model in student and PhD students learning. User profile modeling is a challenge because of the high degree of subjectivity and human behavior indetermination. Traditional methods used to create user models are usually not agile...

Class of structure-independent databases nowadays is flexible data storages widely used in BI modules and information systems with a variable structure. It allows the user to store heterogeneous data, including unstructured data. Unlike relational, structureindependent databases gives user an opportunity to independently change the structure of the application and the data structure without compulsory knowledge of the query language. Data manipulation procedures, as well as structure-independent databases themselv...

The authors propose an algorithm for automatically constructing rules for control subsystems, which can be attributed to fuzzy regulators. Numeric variables used to obtain information about the control object and control actions by which a human operator controls the object in the work are presented in the form of linguistic variables. The membership functions of these variables are constructed as a result of an expert survey. The example describes the operation of the simplest odd regulator with readymade rules. ...

The aim of the article is to identify, analyze and evaluate the scientific problem of the communication interface of workplaces for air traffic controllers in training in the training facility TU / LF Kosice, especially in process and radar air traffic control, in the context of instructor-student and pseudopilot communication within the planned set of specific LETVIS workplaces. The formulation and description of a scientific problem will enable the determination of a methodology for researching the issue by scie...

The article deals with the issue of accidents associated with hazardous substances, their prevention. Modeling of these accidents was chosen as a form of prevention. The production of dangerous toxic substances is currently growing, especially in the industry. The response to this trend is to introduce safer technological processes and preventive measures. These measures serve to prevent or at least reduce the risk of accidents and thus the escape of dangerous substances. To implement prevention, effective measure...

The heat transfer from the source of initiation to the adjacent surfaces is a physical phenomenon worth considering in the process of analyzing the fire. This complex phenomenon describes how the transport, exchange, and redistribution of the thermal energy are carried out and is based on the theoretical knowledge that describes the initiation and fire evolution in time. Flames transfer heat from nearby surfaces through two physical processes, convection, and radiation. A third mode of heat transfer is conduction,...

The article builds on scientific work, which in the framework of the in-the-go analysis has identified a practice-making problem for the performance of air rescue services in the field, with an emphasis on the network of landing areas, their information (technical) security and the risks associated with the decision-making process for conducting the flight under minimum time disposition conditions for the safe achievement of the landing area and the rescue helicopter landing itself on the selected area. The emerge...

Solving problems in the field of traffic control in the face of constantly increasing traffic and, as a result, an increasing number of random events affecting this traffic - delay points (accident, repairs, temporary overlap of lanes and individual sections) is impossible by the methods used today, since the vast majority of they are of an infrastructural nature and require considerable time for implementation (applying temporary marking, construction of interchanges, etc.). It is necessary to create new intellig...

In this paper we propose the criteria of an information model that will allow, based on input expert data, to derive a risk assessment of unmanned aerial vehicle (UAV) flights for mountainous environmental studies. To create an information model, it is necessary to develop a mathematical model of risk assessment and informative content of the model within the framework of the problem under study. For the model input, there is a space of mountainous terrain for which we define set of criteria as a threat to safety ...

The Analytic Hierarchy Process (AHP) is considered a flexible and efficient mathematical tool in approaching the complex decision processes. The AHP method allows the reduction of the complex decisions to comparisons by pairs and, finally, to the synthesis of the results, contributing to the capture of the subjective and objective aspects of the decision. Also, the AHP method allows the check of the coherence for the evaluations made by the decision makers, thus leading to the reduction of the prejudices in the de...

According to statistical studies, a large number of IT projects fail. According to researchers, the reason for the current situation is the inconsistency of the image (meaning) of the target system, which arises due to misunderstanding between people involved in the development at different life cycle stages. This problem arises due to the inconsistency of the forms (artifacts: project document, specification or model) used by stakeholders to represent the system image. An analysis of existing approaches to the in...

The pulse gas preparation unit is an important part of the compressor station. The quality of the pulsed gas sent to the needs of the entire workshop depends on the degree of its purification from acidic impurities, such as CO2 and H2S. This process takes place in an absorption column. The use of industrial control systems at such enterprises makes it possible to control processes remotely. At the same time, both technical and economic costs of production become less. The impulse gas preparation unit must ensure u...

The paper presents a mobile GIS technology for monitoring spatially distributed emergencies. Mobile GIS technology is a combination of hardware, software and information tools that provide cartographic modeling, integrated representation of geographic and attribute data, as well as the collection, storage and analysis of geospatial information. Mobile GIS technology is designed to solve the problems of monitoring the natural and man-made environment, as well as forecasting the processes of emergence and developmen...

This paper describes the general architecture of the decision support system. This system is intended for solving problems of spatial planning and regional management. Spatial planning allows for the analysis and coordination of various activities in time and space, taking into account the state of the surrounding ecosystems. Application of spatial planning methods in the scale of a region allows to estimate complex influence of various activities (economic, environmental, military, etc.) both on natural and ecolo...

The article deals with development of virtual tours to memorable places associated with the residency and activities of famous personalities of Russia using specialized equipment (Insta360 Pro panoramic camera with "fish-eye" lenses with the viewing angle of 200° and 3DVista Virtual Tour Pro software). When creating virtual tours, it was made possible to move from one time period (present time) to earlier historic periods for a memorial place under study, which allows user to independently conduct visual analysis ...

Digitization is one of the key development priorities for the European Union, which also applies to three Baltic States: Estonia, Latvia and Lithuania. In recent years, significant progress has been made in the Baltic States in the fields of connectivity, digital technology use and e-government. Unfortunately, the progress was different in each of the Baltic States, and there were also serious shortcomings in all the states, e.g. concerning human capital. However, unlike Lithuania, the business sectors of Latvia a...

The goal of the research is to identify the most significant groups of environmental risks for large cities with heritage sites. Along with relatively rare events threatening heritage sites such as karst, floods and landslides, a group of risks associated with fast-paced processes has been identified, with immediate hazardous effects. These are the risk of hypothermia and frostbite, the risk of heat stress, the risk of immediate toxicological effects caused by heavy traffic, the risk of traffic noise and the risk ...

In this paper, a computational method to predict the corrosion resistance of some sintered iron alloys subjected to a thermochemical treatment is analyzed. The proposed materials are obtained by powder metallurgy (P/M) route. The raw materials are prepared from atomized pre-alloyed iron base powders. The compacted samples were obtained by cold pressing using conventional route. The powders were compacted at a pressures of 400 and 600 MPa. After pressing, the green compacts were sintered in a laboratory furnace. Th...

Modern society is rapidly changing under the influence of digital technologies. Digitalization as a modern approach to the development of the Baltic States implies not so much the installation of high-tech equipment and the implementation of software systems, but fundamental changes in business processes, business models and management tools. The transformation of society affects the political, economic and social spheres. The priority task is to introduce the concept of sustainable development of the country and ...

The purpose of this paper is to present a viable gamification framework model which can be integrated into a web application to manage the life cycle of PhD Projects for the students in University of Economics - Varna. To build such a framework different game design principles which can be applied in an enterprise environment are discussed, alongside an overview of modern examples of software solutions in the subject area. The model takes advantage of the competitive nature of PhD students by implementing trophy c...

Scientific and technological development is an important requirement to ensure the development of geodesic and cartographic fields. At the same time, science and technology have also been identified as key in socio-economic development in the context of the world applying the great achievements of the Industrial Revolution 4.0. Technological changes in measurement and mapping such as satellite positioning technology, digital technology, network technology, etc. have been changing methods of receiving, processing i...

Currently every day the need for obtaining information from satellites and quadcopters is increasing. Various services and ordinary users have a need for automated processing of received information from satellites. However, automated processing raises a number of problems: different illumination of objects, their difference in different times for example at different times of the year, soil changes, river spills and forests before and after fires etc. However, topology allows you to preserve the shape of feature ...

Currently, information technologies used for emergency management are a set of separate local processes that have a narrowly specialized focus. Often they are not integrated into a single management system and do not have information interaction. Integration of information technologies into a single management system will create a single information environment that combines the resources of various systems for the purpose of operational processing of information about emergencies and response coordination. The pa...

The capabilities of existing intelligent decision-making systems are very limited, so for the successful solution of a wide class of tasks based on unmanned aerial vehicles (UAVs) reliable communication with the group of aircraft is required. For communication between individual UAVs, as well as UAVs with a ground station, Flying Ad Hoc Networks (FANET) and flying sensor networks (FSN) are used. Known works devoted to the development and research of such networks consider predominantly radio communication at the p...

The construction of interfaces that satisfy the requirements of users is an important task since the interface is the ?face? and ?control panel? of the entire system for the user. The study aims to reduce the semantic gap between the user and the developer at different stages of the development life cycle of the user interface by using a understandable sign form, with which the meaning of the object will be formed at various stages of its design. From this point of view, the article presents the results of an anal...

The econometrical time series are under investigation in this paper. The mathematical models describing connections between two time series in the form of VAR(p), Vector Autoregression, models are investigated. Their connection is confirmed by means of cointegration tests. If connected time series are described with some models (here the ARIMA, Autoregressive integrated moving average, models) with certain lag orders it?s assumed that maximal orders of ARIMA models are the upper limits for the orders of the VAR mo...

The ?Predicting a Pulsar Star? dataset has been investigated in this paper. The pulsars are special neutron stars emitting narrow beams of light with high energy into space. They rotate very rapidly and the signal repeats. Scientists seek periodic radio signals in order to detect these objects. Of course, frequency patterns vary from one star to another. The signal is averaged on a lot of rotations. At the same time a lot of pulsar candidates are just radio noise. There is a lot of objects to check. In this task m...

Nowadays it is critical to have the ability to quickly and reliably fetch huge amounts of heterogeneous data and apply Machine Learning (ML) models against it for better decision making. Successful processing of streams with data is crucial for real-time operations like extracting, filtering, transforming, aggregating with other data sources, persisting data to data warehouses, publishing to a different messaging topics or pipelines. With Machine Learning gaining high in popularity serious concerns are appearing a...

Currently there are many spatial structures for storing information about raster and vector maps. There are many algorithms for calculating map information, each of which is applicable to a specific industry. Now there is a problem of the lack of a universal algorithm for obtaining information about the maps, which will allow you to store its scale, time of image creation, deformation, various rotations and other topological features of objects in the images. The article sets the task of developing a method for ex...

The article presents a novel research project aimed at analysis of historical processes at memorable places of the Tambov region associated with prominent Russian personalities using original technologies for analysis, data processing and creation of virtual reconstructions of cultural and historical heritage. It includes: development of the technology for creating 3D models of cultural heritage objects for virtual reconstruction of historically significant territories; development of the technology for analysis o...

The article deals with the development of geoinformatics procedures accelerating and simplifying the application of the scattering model SYMOS?97 (Gaussian model), for selected pollutants in the open air to an area with a large number of sources and reference points. They are compared here with real measured concentrations of these persistent organic pollutants. One of the chapters illustrates the spatial and temporal variability of the ratios of the contributions of individual resource sectors to the total air po...

At the present stage of the mankind development, oil and oil products receive an increasing role. One of the indispensable in the modern world petroleum products is transport fuel. Up to 89% of the fuel contains components obtained during refining. Despite the tendency of developed countries to increase the share of cars that use diesel fuel, in Russia, most of the share is in cars that use gasoline. The benchmark indicator of commercial gasoline is the octane number - a measure of their detonation stability. The ...

In the early decades of the 21st century, the world faced with an active development of information technologies, which is accompanied by an instant change of network protocols. Nowadays it is difficult to imagine the information infrastructure of a modern company without complexes of accounting programs, decision-making support, expert systems, knowledge bases, etc. All of them need reliable and high-quality engineering support. With the growth of information needs of society, the requirements for the quality of ...

P colonies (see [2]) are a well-established version of the P systems (see [3]), the computational device based on membrane computing. One branch of the research of the P-colonies focuses on the possibility to consider the two-dimensional environment, in which the agents act, and the 2D P colonies (see [1]) were introduced. 2D P colonies showed to be suitable for the simulations of various (not only) multi-agent systems, and natural phenomena, like the flash floods. The Grey wolf algorithm (see [4]) is the optimiza...

The solution of the gravity direct problems performs a crucial impact on the results of investigation of the gravity anomalies in oil and gas fields. The direct problem of gravimetry itself means that we have to determine the analytical characteristics of the gravitational field from a set of specified parameters of the geological medium (such as an average depth, an excess density, coordinates of anomaly sources, and other medium parameters). Evaluation of the distribution of similar parameters of anomalous bodie...

Based on the overview of existing industrial safety technologies and new electronic components on the market, the Concept outlines the new requirements to key segments and sub-systems of the System for personnel and mobile machinery positioning in mines. The concept of the system?s functioning is focused on building a highly robust fail proof adaptive system for data collection, processing, transmission and display, as well as for process management. The system for positioning of personnel and mobile machinery in ...

The digitalization of financial services at its current stage is characterized by high dynamics in terms of information technology used, with the expansion and complication of the relationship with consumers, which requires constant improvement of the forms and methods of management of organizations offering financial services. The emergence of phenomena such as cryptocurrencies, blockchain transactions, fintech companies, and others modify the financial services market, which is traditionally dominated by banks a...