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Economists usually apply quantitative methods for analysing economic data. Most of this data has a connection to a particular place or space. In geography, the location plays a crucial role, and together with attributes of such location it represents geospatial data. Collaborative work of economists and geographers (geoinformaticians) offer great opportunities in geospatial-economic data analysis and visualisation. Joining two relatively distinct disciplines brings added value for both economy and geography. In ot...

None of optical devices is perfect. Each lens has some errors, e.g. tilt, coma, spherical or chromatic aberration. The more lenses are in the optical device the more errors can reveal. All these imperfection accumulates and multiplies during the path through the optical device. It is necessary to know how the light passes through and interacts with each optical element. There are some possibilities of simulation of these defects. One of these methods is ENZ (Extended Nijboer-Zernike) theory which can be set up for...

P systems are powerful computational devices, whose structure and functionality are inspired by living cells and organisms. P colonies are one of the types of P systems working with objects. They are formed from one-membrane agents placed in the shared environment and they use very simple rules. It was proved that P colonies are computationally complete devices. In the paper, we investigate the application of P colonies to simulate logical operators. It is obtained in a constructive way. In the first steps we show...

For the last few decades the information technologies have become an inseparable part of the modern society life. Their level is one of the key indicators of the countryпїЅs scientific and technical progress, which determines the quality of life of the citizens. Today the thing is that an effective functioning of national economy, research or services sectors branches is impossible without their integration with advanced information and (or) communication technologies. Due to the integration we have such synthetic...

Structure-independent databases are widely used in different spheres for specific tasks solving. Nevertheless, their main problem is a low efficiency that prevents them to be in progress. This work is concerned to the problems associated with data insertion. The causes of this low performance can be called the use of the existing object method of procedures creation and heterogeneity of the data insertion procedures creation process. This process uses object representation form for process of data insertion proced...

Currently, terrestrial laser scanning is one of the most common method of measurement used for registration of the shape of objects. This technology enables in short time to designate huge collections of spatial data, known as point clouds. Due to the amount of occupied memory, storing large data sets becomes now a big problem. One solution is to create algorithms that allows to reduce the amount of recorded data without losing the essential spatial information. On the market there are mostly paid programs, that a...

The results of research conducted in the field of development and application of mobile systems in problems of monitoring extreme weather situations (EWS). The proposed methods and development models take into account modern technologies like Map Reduce, Hadoop Java API, use of a precedent knowledge base about similar situations. The study places considerable emphasis on ensuring the reliability of the database and knowledge. Implementation of monitoring involves the use of a cloud of drones and other information ...

Despite the common application of a wide variety of IT solutions in organisations, one may relatively frequently come across processes under which information is manually processed by employees, and even if specific IT tools are used for the processing, the extent of operations conducted manually remains considerable. In numerous cases, similar processes may be supported by tools created using spreadsheets. Such tools can be developed by means of a rather narrow array of embedded spreadsheet features and mechanism...

We propose a model of a programmable quantum processing device realizable with existing nanophotonic technologies and which can be viewed as a basis for new high performance hardware architectures. The physical architecture is formalized by a mathematical model of the Quantum Processing Unit (QPU), which is a hardware-specific modification of the quantum circuit model of computation, and it is universal as well, since the available set of operations provides a universal basis for quantum computations. The proposed...

The article presents modeling data on taxes and average annual salary in Bulgaria. This information is stored in a created relational database containing twelve tables. Updating the database is done each year, and the respective new records are entered into the indicated tables. The data about the taxes that are included in total expenditure of households by expenditure groups, average annual salary in Bulgaria and average annual salary by regions (North-West, North Central, North-East, South-East, South-West and ...

Predictions of catastrophic seismic events are extremely important. Such predictions are based on the continuous monitoring of many varying values characterizing the tension in the earth's crust. One of these indicators is micro oscillations in the Earth's crust, committed under the influence of the lunar-solar tidal forces. Devices for the registration of these oscillations are extremely complex, based on laser interferometric techniques. These devices converts length increment into according increment the phase ...

An important aspect of the management of territories is the possibility of constructing models describing the behavior of the territory (managed system), which predict the response to control action. The processes of territory management and organizational systems closely links with the concept of damages (risks). When we talk about geo-processing management, we use the concept of пїЅgeo-hazardsпїЅ. The work is devoted to the problems of applying the classical theories to new problems: the description of the behav...

Linear programming problems are optimization problems where the objective function and constraints are all linear. Mathematica has a collection of algorithms for solving linear optimization problems with real variables, accessed via LinearProgramming, FindMinimum, FindMaximum, NMinimize, NMaximize, Minimize, and Maximize. LinearProgramming gives direct access to linear program- ming algorithms, provides the most flexibility for specifying the methods used, and is the most efficient for large-scale problems. FindMi...

The problem of a vortex pair motion under a free surface is considered. It is known (Barker S.J. & Crow S.?., 1977) that the vortices fly apart with respect to each other in the horizontal direction. The domain of computation will be on the half-plane with the symmetry condition on one of the vertical boundaries. Previously was received (Gushchin V.A. & Konshin V.N, 1992), that for the correct mathematical modeling of an unsteady thick layer of homogeneous incompressible liquid flow through an obstacle, it is nece...

Eco-grammar systems represent grammar systems which were motivated by the behaviour of ecosystems. They were introduced in 1994 in order to describe evolving environment and community of agents together with the interplay among them. Positioned eco-grammar systems (PEG systems, for short) were introduced in our previous paper as a variant of the eco-grammar systems. Motivation for introducing the PEG systems and its main difference from the original eco-grammar systems is that we focus on the embodiment of the age...

Simulation modeling methods allow researchers to create models of complex systems. And it still remains a scientific field. Our purpose is to implement simulation models in training, but as a destination also to business пїЅ to actually use autonomous applications as support systems decision-making in the tourism industry. This paper considers some opportunities of the system for simulation modelling GPSS World Personal Version for creation and applying simulation models in the training managers in the hotel busin...

One of the most popular systems of simulation - GPSS World provides users (1) software tools to interact with the system in the process of simulation research and (2) software tools, realizing immediately the implementation of the model (including: syntax analyzer interpreter model, clock modeling, management of the list of events and more.). Until a few years ago the programs in the first group only automated a part of research itself, namely the creation of a text model and conduct experiments with it. In the ab...

Lots of modern heat supply systems were designed and constructed many years ago, but used today with low efficiency. The task of optimization of heat supply systems to increase the efficiency of such systems is related with high capital expenses of such process, but also with high mutual integration of heat supply systems with other infrastructure objects. In this regard the heat supply organizations are faced with a task of optimization of the efficiency indicators of functioning heat supply systems with minimal ...

The paper deals with optimization of point cloud data processing for surface representation of objects with complicated structure. The model object in our research is represented by a coniferous tree with difficult structure obtained by the method of terrestrial laser scanning. Its precise geometric expression and vector representation is essential and it provides the basis to study the impact of natural conditions to the state and development of the coniferous tree using geographical information systems in the fi...

Organization of the Access database of the Kadiica copper deposit Eastern Macedonia represents the first attempt of this paper authors to synthesize geological exploration data of this ore bearing locality in one professional database available for the wider auditorium. Authors experience in organization of similar databases for other metal deposits such are Bucim, Borov Dol, Zletovo, Sasa etc., gave us an opportunity to construct quality Access database for the Kadiica deposit. This deposit is of porphyry type wi...

Urban transit system planning in large cities requires information about demands on passenger transfers. These demands are commonly represented as an origin-destination matrix (O-D matrix) that contains aggregated data of passenger turnover and traffic. Information, needed for these representations to be constructed, is usually collected using analytical models and natural surveys. Unfortunately, these methods do not provide necessary precision for high quality transport system management and are also quite expens...

The paper consists of a method to implement a control system algorithm for an inertia wheel inverted pendulum. Like any control system application, the transfer function of the plant should be known in order to design the proper controller. The key point of this paper is that the behaviour of the plant is consider unknown, so a system identification should be done at first. Even if the classical way to obtain the transfer function is by writing the physical equations, the result obtained from system identification...

The Ukok plateau is located in the southern part of the Altai Mountains on the altitude of 2200 пїЅ 2500 meters above sea level, at the junction of state borders of Mongolia, China, Kazakhstan and Russia. Despite the severe climatic conditions, the territory was populated and developed by representatives of numerous cultures, who had left their traces up to the present day in the form of numerous archaeological sites. The archaeologists investigated the location of the majority of archaeological sites. However, wi...

The article describes program and algorithmic complex for synthesis of computer vision. This method operates as part of an automated control system for climate testing and it designs to analyze the aging of rubber products according to their visual indices. In this article the structural scheme of the system has been given. In addition, modified methods have been described. They compare the coordinates of a series of photographs, eliminate noise in the image being processed, and convert the output data of the comp...

Fused Deposition Modeling (FDM) is one of the most used technology in the 3D printing field. There is many kind of 3D printers with different design and parameters, such work temperature, deposition speed and others. All of these parameters affect the final parts. Produced parts are made from different materials and therefore there are also different mechanical properties. So it depend what for the produced parts are designed, if there are just for design introducing or even for real use as conventional produced p...

Today, growing number of ransomware attacks from the cyberspace is getting more and more attention as the danger of immediate closing of business for attacked organizations rises dramatically. High level encryptions used by current versions of ransomware makes it almost impossible to be decrypted in the real time and probability of production going live again for attacked organization could be low. Estimated revenue up to 1 billion USD in 2016 makes this type of cybercrime activity very popular within the hackersп...

In this contribution, the authors describe a novel method of visualizing any 3D object into a 2D seamless picture with the use of cartographical principles. The method uses properties of a sphere with reflective inner surface, in which a 3D object and capturing camera are placed. A sphere surface is consequently unfolded using cartographic projection allowing to see the whole object in 2D. The method can be applied to any objects, preferably those of non-human origin, e.g. trees with leaves, cave systems, EarthпїЅ...

Provision of the most comfortable and fast passenger transportation is the most significant goal for any taxi organization. Undoubtedly, the quality of cars and driverпїЅs professionalism is an important factor for the organizationпїЅs success, however, the initial impression of the customer often depends on the quality and speed of dispatcherпїЅs work. Failure to respond quickly to clientпїЅs question or an error during the order processing will result to negative customer views on the organization's ability to p...

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. For example, NASA's EOSDIS produces several Petabytes of uncompressed data per year and w...

Currently, the design and development of the user interface is important, but at the same time, an empirical process. Despite the attempts of many authors to give recommendations on the correct design of the interface appearance, there are no recommendations on how to relate the domain and interface, and build the latter without losing the sense of the user's activity. Unlike the existing approaches in this area, the proposed approach to the semantic design takes into account the activity of the user in the domain...

In paper the most important input variable revolutions (rpm) of drilling tool is analyzed by utilization of Shewhart control chart. The revolutions of drilling tools have a double meaning, in term of the performance and economics. Two measured variable namely pressure force F (N) and speed of rock drilling v (mm.s-1) closely related with revolutions. In general, control charts are used as a proven means to improve the qualitative parameters of production and in the prevention of errors, discrepancies in production...

In a large competitive environment in which today foundry exist are more important is production of castings with high quality and high economic efficiency. Therefore, the use of 3D software and simulation programs is necessary in the pre-production stages. In them it is possible to design, construct and simulate filling and solidification of castings in the foundry mould, design ingate system and feeder system. A properly designed and calculated ingate and feeder system is the first prerequisite for producing of ...

This article examines formation and simulation of interferences in new licensed frequency within communication in NGA 4G LTE networks, which are source of disturbing of radio and television broadcasting. This also use for increase of awareness about interference problematics in access network. This article is dealing with sources of interference within licensed zones, its creation and also provides theoretical and applied possibilities of its technical solution between licensed zones. Article provides experimental...

The work is devoted to the development of a domestic catalyst of ethylene acetoxylation for the synthesis of vinyl acetate is relevant. Non-stationary process of vinyl acetate synthesis from ethylene, oxygen and acetic acid is being implemented in a tubular reactor by passing the gas mixture of the initial reagents through the catalyst bed. It has been established that using hydrothermal treatment of silica gel in an autoclave at varying temperature and processing time it is possible to obtain the samples with dif...

A method of solving the selection problems with fuzzy parameters by means of a special algebraic structure is proposed. To construct such an algebraic structure, we propose a special transformation of existing fuzzy numbers to the simpler form (L or R number) while keeping the most of the initial expert information. This structure avoids deficiencies limiting applicability of the other known structures, such as unjustified extension of the uncertainty, violation of certain natural relations, openness of the carrie...

This report presents an approach to building specialized computeromputer-aided software engineering (CASECASE) tools for the development of information information-calculating applications including computer aided ac counting, business correspondence, statistics etc. These tools form an integrated development environment allowing the computer aided development of different applications in this field. The concept of the integrated development environment is defined as a set of tools and techniques allowing the desi...

Steganography is part of security science that deals with art of data hiding. Modern steganography can serve as an effective tool for hidden data transfers or watermarking for various computer formats, like JPEG, PNG, and MPEG. But it can be misused for stealing data or information transfer in illegal activities too. Most of today available steganography tools are free for use with easy user interface. This significantly increases the risk of exploiting in business sector. Revealing this data is very difficult and...

The e-learning system eLogika serves for teaching logic. In the system there are study materials at studentsпїЅ disposal, but it also provides online tests and promotes all the activities in which the students can obtain their credits. The system collects data about users who are logged in, e.g. time spent on a particular activity, the number of activities performed by particular students, what data is a student interested in, etc. The goal of this paper is to describe the application of many-valued formal concept...

This paper presents a study of the structural models convergence, rezulted from CAD (Computer Aided Design ), based on method of estimation. The study of the structural models convergence presented a method based on the convergence, in the sense of mathematical analysis, adapted to finite strings. The convergence estimators are status sizes that characterize the response of the structural model to the given load. As convergence estimators can be used sizes that characterize the response of the structure, like foll...

This paper is oriented in the supervision of of the major earth movements, particularly in storehouses of explosives, for a beter orientation and safety during their supervision in earth. In Kosovo we have started a supervision of storehouses of explosives by using a global system of positioning GPS. We have put this system in function in Independent Commission for Mines and Minerals (ICMM), which has facilitated and ensured an accurate monitoring if internal movements in some strategic objects for the needs of Ko...

CTC (Communication Train Control) system it is known as integrated intelligent control systems for rail systems including mainline railways, light rails and underground lines in cities. With the development of modern data communication, computer and control techniques, CTC represents the future direction of rail control systems. At present, CTC has been used in one Kosovo railway line. Train control system in the Kosovo railway network, in the main line is installed which enables direction and control of trainпїЅs...

Issues of teaching C++ programming language at Moscow State University of Geodesy and Cartography (MIIGAiK) have been analyzed. Pedagogical experiments were conducted from 2009 till 2016. Modern course of C++ programming language for studentsпїЅ cartographers and geodesists has been developed. The training geodetic programs can be used both by teachers and students whose specializations are geodesy and mapping at lectures and practical sessions and also for home studies. The example of training program named "Coll...

Emotions are an integral part of human life. Different situations in our lives affect changing emotional state. It is believed that human facial expressions is distinctive enough to be a part of analysis that allows for assessment of emotional state. The article describes an innovative research conducted by scientists team. As input data used in movies recorded speed camera at speed of 1,000 frames per second in high definition. Registration of a human face took place during the application of the stimulus causing...

The laser meter of super small rock displacement under the influence of gravitational forces from the moon and the sun allows registering the regular fluctuations in the Earth's crust. These fluctuations provide small difference in the distances between the rocks edges in the two orthogonal directions inside the shaft structure drilled in the rock. Laser-based displacement meter converts the distance change into the increment of the phase difference in the two light beams in the interferometer. The photo detector ...

The aim of the article is an example of how to handle the process and visualize data from the sensor SRS in a GIS environment. Spectral Reflactance Sensor (SRS) is a contactless position sensor system manufactured and distributed by Decagon that monitors vegetation cover, and depending on the use of sensors allows for the Normalized Difference Vegetation Index (NDVI) or Photochemical Reflectance Index (PRI). Values of the spectral reflectance are gradually transferred from the field sensor to the PC environment, a...

The paper deals with issue of computation of the sunrays penetration through point cloud data with considering the geometrical and astronomical principles in calculating the Sun position relative to points of the objects on the Earth surface. Input data are represented by point cloud obtained by the method of terrestrial laser scanning and they express group of trees in the forest stand, where solar insolation is one of important parameters being studied in forest protection management systems. Currently used meth...

Specific models and storage technologies which is possible to save domain semantics are required to create configurable information systems. This is why modern researchers talk about the high cost of domain models in comparison with a program code. But they don't suggest any approaches for including this model as a component of the system itself. Existing approaches for domain modeling during the transition to final stages of a system life cycle tend to lose the semantic component of the data. They only allow to p...

Computer simulation is substitution of original object by another one in order to obtain information about the most important properties of the original object using the object model. Depending on the purpose, the simulation can be made on two levels: on the qualitative and quantitative. Accordingly, descriptive or constructive models are used. Mathematical modeling is always performed quantitatively using design patterns. This article describes the modeling of computer networks and their parameterization. One of ...

Appointment of the software system is the solving the direct and inverse problem of the lunar physical libration. The direct problem is to calculate the selenographic coordinates of stars falling within the field of view of the telescope mounted on one of the lunar poles. The analytic theory of the physical libration of the Moon of Petrova N. [1] provides the base for the solution of the problem. The inverse problem is to determine the parameters of lunar physical libration based on the simulated "observable" sele...

Nowadays in buildings energy supply the various combinations of the district heating, electricity and natural gas systems are used for heating, hot-water supply, cooking and etc. At the same time due to the development of energy saving technologies the available generating capacity on various types of energy has appeared and the competition among energy supplying organizations may occur. Therefore, we need to consider the impact of such decisions on the development of all types of engineering networks in specific ...