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We have developed an online information system of mechanical recanalizations which is used in stroke centers in Czech Republic. The application is technically based on HTML forms, PHP and MySQL database. The system is online, independent on operating system and with possibilities to extend the functionality, there are main benefits. The database of mechanical recanalizations is a useful tool for long-period studies in neurosonology. Practical using, goals and benefits of the system is discussed in the first part o...

The research focuses on the potential of topographic elevations by means of aerial scanning with the help of drones, as an alternative for creating and completing the existing map database necessary for works in almost all fields of activity that concern the national economy. Research objectives are geared towards developing methodologies that use digital systems and geospatial data to update, complete and store the information needed for thematic mapmaking and identifying the most appropriate geospatial technolog...

The growing content delivery traffic becomes a challenge for efficient usage of network resources. Optimal utilization of scarce radio resources may be achieved by deployment of cloud capabilities in the radio access network i.e. by deployment of Multi-access Edge Computing (MEC). In this paper, we propose RESTful application programming interfaces (API) that enable third party MEC applications to send messages to end user devices in a specific geographical area. Using the API, an authorized mobile edge applicatio...

Modern socio-economic systems, as objects of management, are complex spatially distributed systems and territories, which indicates the need to develop and apply geo-information management. Natural, man-made and social processes of territory development unfold in time and in space and are characterized by a variety of parameters described by a random vector. The components of the natural and climatic potential are random non-stationary processes, the study of which leads to the necessity of forming, according to t...

The method of two-phase locking (2PL) is still used in concurrency access in the global transaction management. It has its advantages in distributed database management systems (DDBMS), conflicted events. The paper views modeling algorithms of Centralized, Distributed and Primary copy Two-version Two-phase locking. The presented algorithms are models of the corresponding variants of the 2PL protocols for DDBMS using two versions. As in concurrency control of distributed transactions in DDBMS deadlocks are possible...

An important problem in assessing water quality is that the data on water pollution and their analysis are formed over the previous period, and as a result, it is difficult to assess the current status of water resources, the more likely it is to predict it for the future period, which would allow timely action on improvement of the ecological state of water. The purpose of the work is to evaluate the possibility of using neural networks to simulation of surface water pollution. The data are derived from the resul...

One of the fields where the principles of intelligent systems are significantly reflected is logistics. Smart intelligent features are used across different disciplines, and their technological development influences progress in the industry. [1] One of the fields, where the principles of smart systems are nowadays implemented, is logistics. Autonomous smart elements communicate with each other using the Internet of Things and provide more effective support and communication for their digital twin (cyber-physical ...

In this article, considering the process of preparing the regulated stage of construction for hazardous objects of a high degree of responsibility - this is an assessment of the impact of the proposed construction on the environment (EIA). The main attention is paid to the socio-technical aspects of the EIA procedure, as a tool for data collection for making management decisions. In this paper, we highlight the importance of a comprehensive assessment of the construction site and taking into account the features o...

Authors describe the novel approach to boost the scientific data analysis performance with the data-storing schema for distributed scientific research systems. This approach optimizes the workload on storage nodes and enhances the computation performance. Managing the enormous output of scientific research systems is expected to be the most technically difficult part of all recent projects producing Petabytes of imagery data. In this paper we describe the distributed storage structure with indexing techniques whic...

Actual tasks in development, configuration, utilisation and support of complex technical, economic and natural systems require a deep understanding of its internal processes. System dynamics discipline is devoted to that problem and let to researching and analysis the complex systems behaviour. The base of it is a numerical method for dynamic system modelling. Modelling processes for real systems require significant computational resources (time and power consumption). Authors provide the approach to the optimisat...

Scientific codes are usually highly parallelised and executed on heterogeneous architectures. Nowadays, it is common to use graphics accelerators (GPUs) to speed up data-parallel algorithms, and in the meantime, the already existing CPUs can help in this work. Distributing the jobs between systems is always a difficult problem, especially when the processing units have different runtime environments and hardware architectures. There are several attempts for static and dynamic load balancing, but most of these are ...

The evacuation time of occupants in a fire event is a particularly important parameter, both for the development of emergency evacuation plans and in the post-event investigation. To estimate this time, the classic approach uses alarm / evacuation trials. These simulations involve the allocation of human and financial resources and have the disadvantage of not being able to cover a wide range of technically possible critical scenarios. Moreover, it has been shown that in real fire cases, human behaviour can be sig...

Wood was the most common source of energy on earth, being gradually replaced by fossil fuels. Given that the wood used in the generating stations comes from properly managed forests, then the carbon emitted from the chimneys can be annihilated by the carbon that is absorbed and used by the freshly planted trees. Wood can therefore be considered as carbon neutral. It remains to be seen if this theory is actually verified. Once it was decided to classify wood as a renewable source, its consumption increased exponent...

Characteristics of educational technology used at the Moscow State University of Geodesy and Cartography focused on C++ programming language teaching students of geodetic specialties are presented. The new C++ programming course for geodesy and cartography students has been developed. This course is geared towards the needs of geodesy and cartography department of higher school. The current task is to elaborate a wide geodetic collection of tasks for C++ programming exercises. The need to develop a specialized C++...

Artificial Intelligence (AI) has now become a reality and, in many areas, it is already used, being very secure. The advantages of AI are unlimited and do not only influence everyday life, but also in all industries. This includes the automotive industry, which could lead to faster mode of transport and a significant reduction in the number of accidents and harmful CO2 emissions. Communication with a car now has a variety of different functions, most of which use the cloud - a relatively new idea - and everything ...

In additive manufacturing field are many technologies and devices which could be included in such area. Basic difference between conventional and additive manufacturing is the way how the surfaces of final part are created. In conventional subtractive manufacturing we have to remove material from block of raw material of semi-product to reach final shape. For additive manufacturing is typical that we adding material, mostly layer by layer to build final shape of model. Most common and available additive manufactur...

Testing of transmission parameters within data networks is necessary for evaluation of quality level of provided services guaranteed in SLA between provider and end user. The main aim of the article is to introduce recommendations ITU-T Y.1564 SAM and demonstrate measurement its own according to these recommendations. The article is focused on efficiency measurement of IP networks with comparison to QoS parameters from different network features, which use 100 megabyte and gigabyte Ethernet interface. For measurem...

The increase of transferred information amounts brings the need to create new automated systems for data recognition, classification and routing. It is impossible to solve such problems without modern machine learning technologies and artificial intelligence technologies. An algorithm that takes into account the linguistic and syntactic properties of documents, the characteristics of the subject area is formulated on the basis of the system approach to the analysis and decomposition of the task of document routing...

The number of active users of social networks according to the latest Global Digital Statshot report from We Are Social and Hootsuite has exceeded three billion. This fact makes social networks the one of perspective sources of information for carrying out analytics of various kinds. The particular interest from a scientific point of view is the identification of interactions between individual actors and social groups. Since a significant part of the interactions are personal data, which are closed for general re...

The article presents the results of the research studies assessing the accuracy of determining the position of an aircraft using the differential RTK-OTF technique inthe post-processing mode. The data for the research test come from an in-flight test in which a Cessna 172 aircraft was used, and which was conducted around the EPDE military airport in D?blin, Poland. The position of the Cessna 172 aircraft was retrievedin the ASOS v.2.0 program for 3 independent RTK measurements in the OTF positioning mode. For the ...

The article touches the problem of simulation of discrete systems, discusses the law of probability distribution, considers the probability of the distribution of the time interval between packets in computer networks. To create a model that takes into account the characteristics of traffic in a real system, the law of distribution of random variables is used. To obtain results close to the real system (minimum distortion is a goal), it is necessary that the initial data are comparable to the real ones, during the...

Lasers are the most accurate measure of distance increment. Therefore, they are used to detect ultra-small oscillations of rock under the influence of tidal forces [1?6]. This allows identifying the accumulated tensions in the earth's crust. The change in the type of such fluctuations indicates the possibility of earthquakes in the near future, which allows reducing the damage from such catastrophic events, to save the lives of many people. Currently, such systems use frequency locking of two or more lasers to eac...

The Artificial Intelligence is a measure of the ability to achieve purposes in a complex and dynamic.The recognition of the figures using artificial intelligence has been and is still one of the great problems of the modern era. The attempt of identification of the figures in various forms, the contours and shades has developed an impressive number of algorithms. Up until now it has not been discovered the optimum method and algorithm with an efficiency of 100 % in recognition of the figures.The front work propose...

In modern electric drive systems, regardless of the speed control method used, the asynchronous motor power supply tends to be generally made from static frequency converters that can change the amplitude and frequency of the supply voltage. In order to achieve the static converters in which semiconductor materials are used, the latest generation technologies are used. For Silicon Quality Control in industrial processes CryoSAS (Cryogenic Silicon Analysis System) or SiBrickScan (SBS) Silicon Ingot Analyzer are use...

3D model has been presented for numerical modeling of gravitational waves near the shoreline in this work. It consists of Navier-Stokes equation system, which includes three momentum equations and mass conservation law equation in region with dynamically varying boundaries. The variant of physical processes splitting method (the method of pressure correction) has been used to construct stable and conservative finite volume scheme. The adaptive alternating-triangular iterative method has been used for solving obtai...

The advancement of tracking technologies such as RFID (Radio Frequency Identification) in recent years is developing the study area of shopping behavior of consumers in retailing setting which globally regained increased interest. However, not so many studies have attempted to analyze consumer shopping behavior using the RFID data. The purpose of this paper is to propose the framework based on behavioral variables, which can be tested using the RFID data obtained from the experiment in one of the supermarkets in J...

Thanks to the ability to collect information about large areas and with high frequency in time areas threatened by floods can be closely monitored. The effects of flooding are socio-economic losses. In order to reduce those losses, actions related to the determination of building zones are taken. Moreover, the conditions to be met by facilities approved for implementation in such areas are determined. Therefore, satellite data from the Earth observation program play a key role in assessing water conditions that ar...

Typification of ice conditions in the Arctic is an essential step to solve important applied problems in the field of arctic marine transportation since in such studies a variety of ice conditions is often described by a predefined set of typified scenarios that directly influence the results. Criteria for ice typification traditionally include the parameters that represent all the sea area, e.g., total ice coverage, area of old ice and other. However, our practical experience shows that such criteria do not alway...

Development of information and computer technology is a factor in increased use of statistical methods in all sphere of action (geology, geophysics, ecology, astronomy and many others). Regression analysis (RA) is widely used in the prediction and assessment of model parameters. For many years the ordinary least squares estimation method (LSE, OLS), a computational scheme of RA, and its generalizations are widely used in practice. The disadvantage of the classical scheme of RA, is that with the compliance LSE assu...

The paper describes the deployment of an open-source Crismapp platform. It is a WebGIS 2.0-based solution designed primarily for crisis management purposes. As part of a cooperation with the University of Bergen, Crismapp was implemented for the purposes of monitoring the earthquake in the Norwegian region within the European-wide observation network EPOS. HTML5-based application reflects the WebGIS 2.0 principle and uses as much as possible open tools: the Leaflet map library and GeoJSON data format. Besides the ...

We propose a theme analysis method that takes into consideration the perspectives of both a supplier (place) and a consumer (user) in unstructured place reviews written by users. To this end, ambiance on the place side and companion and time on the user side were considered as the theme elements. For the experiment, we used the review text data written in English provided by Yelp, and we selected coffee-related places (e.g., coffee shop, coffee house, etc.) from various place categories. From among them, we chose ...

The design of personalized footwear insoles involves modelling the 3D shape of the insole based on the individual feet plantar surface shape and dimensions. The advantage of custom made insoles over the mass produced ones are represented by their enhanced functionality. Custom made insoles are recommended for subjects with various foot health disorders and for subjects who undertake intensive physical activities like athletes and soldiers. During human life time, under repetitive mechanical stress, feet suffers di...

The main objective of this article will be focused into the possibilities of 3D printing paper machine called Mcor IRIS HD and also to subscribe the principles of this 3D printer in general. This machine is not well descripted yet; so the main idea is based on how this 3D paper printer works. Also, unlike the other 3D printing materials, this paper technology is not so well-known nowadays. There will be explained how the papers are spliced layer by layer on the building platform inside the 3D printer and the proce...

This paper presents an original approach on developing and testing an extruder for paste-like materials for conventional 3D printers based on Fused Deposition Modeling (FDM) technology. The main advantage of such technology is that it allows the final product to be modified / altered after fabrication i.e. either to correct printing irregularities or simply give it another design form. The material is fed into the extrusion nozzle via a plastic cylinder driven by an electric actuator. Various extruding nozzles wer...

Computers have replaced peopleпїЅs work in various economy sectors for quite some time. Newer and newer technologies and software are designed to improve quality and safety. Precision and accuracy are the most important, both while looking for mineral depositsпїЅ documentation and during their exploitation in the future. Most geological works are performed using proven, classical methods. However, the development of computer science nowadays is huge. More and more mining operations are performed by means of comput...

Of all geographically related health problems, pollen allergy is one of the most common allergic diseases of the respiratory tract. To support pollen allergy sufferers (including allergic rhinitis, conjunctivitis and asthma), a range of mobile applications are available for tracking pollen forecasting and recording symptoms. The geographic location of such records provides new opportunities for WebGIS pollen allergy monitoring. However, adding raw VGI data to a web map may produce more misinformation than benefits...

Building a telecommunications system based on routers allows you to use traffic prioritization to improve the quality of user traffic, regardless of network technology. This new feature, compared to networks built entirely on hubs, is a consequence of the fact that routers buffer packets before they are sent to another port. The router usually leads for each input and output port not one but several queues, each queue having its own processing priority. The efficiency of the network depends on the capacity of the ...

The goal of the presented application is to find a simple way how to randomly divide n patients into 2 groups 1 and 2. The main requirement is no dependency on target platform and the application must be available online for many different medical departments. Each department must have a unique login. No higher security level such as two-factor authentication is required. The results of the division into the groups represent a random choice of patients recommended to conventional and a new treatment without any pr...

Ecosystems are open adaptive systems with self-organizing properties; they are based on local interaction of the composing elements and generating a general end-result. Digital ecosystems incorporate these features in context-aware applications that work together for the efficient solving of complex dynamic problems. This article considers the digital ecosystems as being open-system of applications with a certain degree of context-awareness. It also presents Econtxt a programming model for the context used by cont...

The progress achieved over the past half century in modeling of hydrophysical processes and numerical methods, as well as the current level of computer and information technologies, led to an increasing use of 3-D models for modeling aquatic ecological systems. Nevertheless, the problem of numerical solution of systems of equations describing coupled hydrophysical, hydrochemical and hydrobiological processes is highly time-consuming and difficult from a computational point of view. In addition to computational dif...

The paper considers the problems of requirements formalization in the implementation of software development projects, as well as ways to solve these problems. When developing a unified model for converting requirements into a formal model, a static model describing the general concepts of the transformation of requirements into a formal model and their relations will be considered, taxonomies that classify and define the main types of requirements imposed on the requirements of the rule, approaches for pretreatme...

The paper presents a method for authenticating images that were shot using a mobile phone. Thanks to the newest advances in integrated cameras, smartphones represent one of the most popular ways to take a photograph. A picture could be critical evidence in a trial and, with the abundance of free editing software, a forgery is easy to achieve. A method to secure and test photographs for authenticity was developed, implemented as a mobile application, tested and detailed in this paper. The watermarking algorithm is ...

An original approach to studying acoustooptic interactions at infralow frequencies using seismic vibrators is proposed. The authors in numerous and natural experiments has been proved that such sources can radiate low-frequency acoustic oscillations, propagating in the atmosphere up to hundreds of kilometers from the source. High-precision metrological properties of vibrators on frequency-time characteristics open up possibility for investigating acoustooptic interactions at infralow frequencies. An acoustooptic s...

The article presents the analysis results of the physical environment of the data transmission between the technological equipment of automated dispatch control systems via interface RS-485. One of the ways of energy supply and life support systems improving in the part of energy efficiency increasing is distributed facilities automated dispatch control systems (ADCS) application. Because of control centralization of distributed heterogeneous engineering systems of buildings with multivendor devices and different ...

Multi-access Edge Computing (MEC) is a new information technology that brings Cloud capabilities into the Radio Access Network (RAN). The vicinity to end users allows applications with requirements for wide bandwidth and low latency. MEC services provide direct access to real-time radio network information which enables offering of context-related applications. The communication between MEC services and applications is based on Service Oriented Architecture (SOA). In this paper, an approach to definition of Applic...

The aim of this paper is to propose an improved algorithm for estimating the risk of bankruptcy of the Bulgarian insurance companies. The algorithm is developed based on the multi-layers neural arhitecture with input dates represented by values of indicators from the financial statements of Bulgarian insurances companies. The memory of the neural network will provide informations about the risk of bankruptcy. Development of the neural model (algorithm R2b2n- risk bankruptcy of Bulgarian insurance companies with ne...

Since INSPIRE directive was published in 2007, many datasets became publicly available in interoperable way. This makes possible the developing of wide range of applications (including web and mobile) that use this information as data source. In this article authors test all for download available datasets registered in Latvian spatial metadata catalogue and describes the technical details such as the feature type, feature count in dataset, geometry type, default coordinate reference system, standard name and deri...

The recent development of remote sensing technologies and rapidly accumulating environmental data derived from geographic information systems (GIS) now provide information on the patterns of terrestrial environmental variation at global and continental scales. Moreover, the past decades, an extraordinary amount of work has been undertaken to map species distributions and use the collected information to identify suitable habitats. Remote sensing metrics have become an integral part of SDM studies and contribute th...

One of the key trends in the sector of information and communication technology (ICT) is the Internet of Things (IoT). It allows the connection of two planes пїЅ the real and the virtual. This concept assumes that different devices and objects which use sensors can communicate with computers or exchange the collected data via the computer network. This can have a positive impact on the management of complaints, in particular those systems where applications are a manifestation of dissatisfaction internal customer....

The development of software (information systems in particular) is a time-consuming process. As statistical research shows more than half of the projects on the creation of information systems are not successful (there are some difficulties, or not implemented at all). All existing approaches consider the development of the system from the point of view of the objective concept, which represents the system as "a set of elements and relations between them." This leads to the problem of transition between the stages...