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The Geographic Information Systems (GIS) are one of the main tools through which changes in the urban environment can be tracked. They can be used to analyze processes not only as territorial phenomena, but also to derive spatio-temporal models and trends. Free and open access data was used for the present study - from Copernicus, OpenStreetMap and the Urban Development Plan of Sofia Municipality were used as sources. Data layers for the terrain, land cover, buildings, street network and others were analyzed toget...

Computer simulation of foundry processes is an essential part of a modern foundry. The role of the gating system, its design and different elements are important in casting. Experimental verification of the designed gating system for new castings is costly, timeconsuming and economically inefficient. Therefore, these processes in the foundry are replaced by computer simulation. A detailed analysis of the simulation results makes it possible to predict various risks that may cause a failure in the quality of castin...

Information technology is a common part of human activities today. In most countries of the world, the security, health, and industrial sectors can be established here. The dependence of these sectors on information technology has been significantly strengthened by the global covid-19 pandemic and the current war in Ukraine. Data digitization has brought positives such as availability, fast transmission, and processing of necessary information. As well as negatives as constant attempts to steal, destroy or abuse t...

Laser scanning can be used to acquire measurement data for Building Information Modeling (BIM). Terrestrial Laser Scanning (TLS) technology is ideal for this type of work. Having a point cloud of the measured object, dimension and model it in accordance with reality are possible. TLS gives the opportunity to obtain a big amount of observations, which on the one hand allows for an accurate depiction of the object, but on the other hand is troublesome during BIM developing. Therefore, the paper presents the methodol...

Large European airports have now been forced to close several times due to the disruption of their protected area by drones. The biggest incident in terms of damage and restrictions clearly includes the attack of 19 and 21 December 2018 on one of the largest airports in Europe, London - Gatwick. All air traffic was interrupted, and flights were canceled and postponed. It was only a matter of time before drone technology was used by terrorist organizations and other criminals for their attacks. The article discusse...

In the practice of leading countries, digital transformation implies the industry principle of supporting the introduction of new technologies. At the same time, programs and projects can be built both on the principle of introducing any one promising group of technologies in several industries, where it is especially relevant, and provide for the digital transformation of a particular industry through the forced introduction of many technologically heterogeneous solutions that are in demand in a given sector of t...

The current information age has led, globally, to an exponential increase regarding the availability and the use of the information, both structured and unstructured, a phenomenon known as Big Data. The term Big Data refers not only to the massive volume and variety of data itself, but also to the set of technologies that surround it, in order to collect, store, retrieve, manage, process and analyze data in order to solve complex problems in society, respectively for increasing the quality of life in all its aspec...

The COVID-19 outbreak has heavily influenced the way many businesses operate across all sectors linked to both changes in the consumer behavior, social-distancing restrictions and also the availability of resources and services (inc. public services) for businesses. These restrictions have influenced also the work of enterprises in the sector of bioeconomy - producers, processors and distributors of manufactured goods like food, clothing or home goods and other bio-based sectors both in the stages of primary produ...

This article deals with the design and implementation of an intelligent biometric system that allows the detection and classification of a person's face from static image data and creates a system for evaluating its reliability. In its introductory part, it theoretically describes applied biometrics and biometric systems for security identification and user verification, and also deals with the theory of the description of algorithms for human face detection and recognition. Subsequently, the authors use the MATLA...

Explosive atmospheres may occur both in underground mining, as well as in surface industries such as the oil and gas, chemical, petrochemical, wood or baker industries, basically in all industries which extract, process, use, transport or store flammable substances. Within the European Union, Directive 2014/34/EU regulates the placing on the market of equipment, protective systems and components intended for use in such hazardous atmospheres. In this regard, for proofing the compliance with the essential safety re...

Diagnostic ultrasound (US) and magnetic resonance imaging (MRI) are important medical imaging methods in modern radiology. Our research is focused on imaging brain structures in neurology. In this paper we present differences of digital image analysis of the substantia nigra (SN) between US and MRI using the same algorithm. In the past, we developed an application for analyzing substantia nigra echogenicity in BMODE US images. Our developed application is based on a principle of binary thresholding in Region of In...

Based on data from the last decade, institutions have faced an increasing number of applications for licenses and permits for raw materials, construction, industrial and metallic minerals. Receipt of applications and accompanying documents for licenses and permits is currently performed as a manual process and submitted by enterprises in hard copy format. Institutional officials consistently face with the difficulties in manually processing all data from applications and accompanying documents submitted, causing d...

Biomass is monitored in many agricultural studies because it is closely related to the growth of the crop. The technique of digital repeat photography that continuously capture images of a given area with an RGB or near-infrared enabled cameras, Phenocams, has been used for more than a decade mainly to estimate phenology. Studies have found a relationship between Phenocam data and above-ground dry biomass. In this context we investigate the modeling of barley fresh above and underground biomass with Green chromati...

The significant increase in the price of energy resources leads today's society not only to a reconsideration of energy conservation policies but also to the encouragement of architects, builders, and building owners to use thermal insulation and exterior wall finishing systems. The design of thermal insulation for facades is a constructive decision, in which the layer with thermal insulation properties is fixed on the load-bearing side of the walls, with the help of adhesives and/or by mechanical means, followed ...

The significant development of single-board computers today can create many different threats to information security. These devices open up new opportunities for attackers, as they allow them to find new ways to carry out attacks. Since SBCs are often small in physical size, but have the processing power to run full Linux distributions, combined with a variety of different external interfaces, this allows you to create devices that can listen to sound, photo and video recording, and intercept network traffic. Met...

This article deals with the use of the principles of fractal geometry applicable in the field of cryptographic security of communication within information systems. The theory of the proposed solution is based on the field of iterative fractals created using the TEA (Time Escape Algorithm) algorithm. The introductory part deals with the issue of choosing a suitable category of fractals for the purpose of securing information systems. The next part deals with the issue of generation, analysis of fractal structures,...

Forest fires cause major damage to human habitats and forest ecosystems. Early detection may prevent serious consequences of fast fire spread. Although there are many smoke detection algorithms employed by various optical remote sensing systems, there is still a major misdetection of images containing fog. Fog exhibits similar visual characteristics to smoke. Furthermore, when monitoring dense forests many smoke detection algorithms would fail in robust recognition due to fog covering the trees at dawn. There have...

The purpose of law 165/2013 is the identification and inventory on topographic maps of all lands owned by the public or private domain of the state and the identification of lands that constitute the available reserve of the local land commission to complete the restitution process in nature or equivalent of the real estate abusively taken over during communism. This paper aims to present the steps in verification, validation, and correction of surface topological errors for works specific to law 165/2013 using Ar...

The paper presents the results of research on the possibility of calculating the investment potential of a particular area based on its spatial characteristics. The level of spatial unit in this research is local administrative unit (cities or municipalities), while the geographic coverage is entire area of Republic of Croatia. Regarding the method, the results could be applied internationally and are not limited to national borders. Furthermore, when deciding on investing, it is important to know the risk. This r...

Predictive process control is a method of regulation suitable for controlling various types of systems, which is based on the idea of using the prediction of future system behavior and its optimization. Normally, a system model is used to predict behavior, and therefore it is necessary for the correct function of predictive control to make its correct selection and determine its parameters so that the controlled system is described as accurately as possible. Another advantage of predictive control is the possibili...