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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...

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 ...

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...

The coal processing industry uses a various technology for the process control. Various devices and control systems there can be implemented. With the support of automation, the production of final product can be more effective. Modern control system requires an advanced control algorithm on a several control levels (i.e. stabilization, optimization). The paper focuses to the process of coal combustion and coal gasification. Primarily two processes are examined i.e. underground coal gasification (UCG) and coking. ...

This paper presents a technique for the detection of elliptic objects connected with subsidence troughs in radar interferograms using the Hough transform. The generalized Hough transform to detect arbitrary shapes, including ellipses, requires a five-dimensional accumulator array, which occupies a very large part of the memory. For this reason, to overcome memory problems, a modified algorithm using a one-dimensional accumulator array was applied. This modification helped also to reduce the computation time. In th...

Mining is a complex and staged process that includes: prospecting, documenting, and mine planning, opening up and extraction of mineral (mining, transport, processing and deposition of waste), revitalisation and re-development of former mining area. Mining permit and decision on environmental impact of the enterprise are required prior to commencement of mining. During and after end of mining, impact of mineral extraction on surrounding environment, including surface deformation and the related mining damage, wate...

In this paper, it presents a modality for verification of conformity the parts which are achieved on CNC machine tools, modality which takes into account the production process capability. By this control method it determines the capability of the technological process of making the piece, it can be applied either on the technological process flow, or on reception of consignments of products. As the case study, it was considered a piece ,,end effector,, used in industry building of machine, whose volume of achieve...

In this paper, we present a performance assessment of the implementation of the algorithm of wave sources location using wave field modelling on a Graphics Processing Units (GPUs). The numerical algorithm of wave source location based on the acoustic wave equation was implemented using finite difference method. To achieve better wave source location, the algorithm was implemented using staggered grid meshes. The parallelization was carried out using GPU approach, established in NVIDIAпїЅs Compute Unified Developme...

Petri nets is one of mathematical modeling languages for the description of all kind of parallel systems. The new class of P/T Petri multiprocess multinets (PPMM) and its ASYNC-CALL operation are introduced in this article and their base characteristic of the well-formed property is proved. PPMM then generalize the definitions of the bi-relational P/T Petri nets and the P/T Petri process nets and their operators that follows from the base ideas of Petri net processes and their property-preserving Petri net process...

This paper presents an approach of using Augmented Reality (RA) technology for operator training in quality inspection of various large sized metallic products such as pipes, weldings, metal sheets, etc. An Android software application has been developed and implemented using Unity 3D Software Development Package(TM). The proposed application simulates the use of various ultrasonic sensors/probes to train human operators without the need to use the actual expensive inspection equipment. The user manipulates a 3D p...

Improving diagnostic efficiency of pulmonary diseases is now a very urgent task. For the construction of automated systems of recognition and classification of radiographic images is necessary to perform the process of localization of pathological formations on chest fluorography. The correct choice of the method of segmentation for studying radiographic image segments provides quality and improves the accuracy of diagnostic decisions taken. The article shows a block diagram of a device that implements a method fo...

The aim of the paper is to solve design of the automatic identification system via radiofrequency technology with respect to spatial analysis data acquisition. The compact system of automatic identification at railway defined by GS1 standards enables to monitor motion and operating status at the level of whole trains, wagons or even at the level of individual container or other load. If the acquired data are supplemented by coordinates of places, where they were obtained, those can be used for the spatial analysis...

Paper deals with important aspect of organization and implementation of transport operations and transport processes between points of origin and points of consumption in order to meet requirements of GS1 standards to fulfill supply chain needs. Designed information system (hardware, software and communication features) is installed on each logistic unit (wagon, container etc.). This allows to use extended self AutoID functions for low level data preprocessing. Paper focuses on train composition of both rail and r...

Contemporary measurements of the bottom during hydrographic sounding use modern multibeam systems and precise positioning one. Determination of coordinates of acoustic wave's reflection points on the bottom is based on transformation coordination sets: connected with positioning system and echosounder's transduces(s) based on CoG - Center of Gravity and spatial orientation determined by MRU - Motion Reference Unit.Despite using mentioned devices (systems), in the geospatial data cloud there are incorrect points, w...

The aim of this paper is to highlight the significance threshold between the kinematic and dynamic characteristics of sports technique key elements used in dismounts and the performances achieved by junior gymnasts in uneven bars events. This scientific approach is part of the formative pedagogical experiment associated to the postdoctoral thesis, at the midway point, in the end of the competitive year 2014. The following research methods have been used for this purpose: bibliographic study of specialized literatu...

Numerical algorithms for constrained nonlinear optimization can be broadly categorized into gradient-based methods and direct search methods. Gradient search methods use first derivatives (gradients) or second derivatives (Hessians) information. Examples are the sequential quadratic programming (SQP) method, the augmented Lagrangian method, and the (nonlinear) interior point method. Direct search methods do not use derivative information. Examples are Nelder|Mead, genetic algorithm and differential evolution, and ...

The methodology of computer simulation of nonstationary fields of temperatures, concentration and pressure is considered. The computer model of non-stationary heat exchanging process is researched. Decentralization interaction of the active parallel agents is the base for computer implementation. Agents are defined as abstraction of elements of physical system where the modeled processes proceed. Process characteristics are calculated on the base of information on non-stationary fields of temperatures of a wall of...

The aim of this paper is to highlight the degree of connection between the kinematic and dynamic characteristics of sports technique used in acrobatic elements and the performances achieved by junior gymnasts in balance beam events. For this purpose we used the following research methods: bibliographic study of the specialized literature, pedagogical observation, video-computerized method, using пїЅPinnacle StudioпїЅ and пїЅPhysics ToolKitпїЅ programs, method of movement postural orientation and evaluation of spor...

This paper proposes an evaluation of data acquired with various sensors and used in coastal water segmentation applications. Correct monitoring of coastal changes in dynamic coastal environments strongly depends on accurate and frequent detection of shoreline position. Automatic shoreline delineation methods are preferable, especially in terms of time, cost, labor intensiveness and difficulties of in-situ measurements. Two main issues have been encountered within this application field, the quality of data and the...

A very important factor, which has a great influence on the financial situation of mining enterprises extracting coal, is an effective use of machines. To determine the level of the use of the machines, it is necessary to reliably evaluate their work. The credibility of such evaluation mainly depends on the quality and the amount of obtained data about the parameters of the machinesпїЅ work. To synchronize, archive and analytically process the data, it is essential to use appropriate informatics tools. The article...

The authors of this paper developed a concept that can be used for automatically car parking; the concept is based on finding the obstacle free spaces around the vehicle and it uses methods to guiding the car in an available found parking place. The car sensing system includes ultrasonic sensors to measure distances, proximity sensors to detect obstacles and a rotative position sensor to measure the vehicle displacements. A microcontroller based central processing unit (CPU) was used to process sensorsпїЅ informat...

Steganography can be used for illegal activities. It is very important to be prepared. To detect steganography images we have counter-technique known as steganalysis. There are different types of steganalysis, depending on if the original artifact (cover) is known or not. In terms of practical use, most important are methods of пїЅblind steganalysisпїЅ, that can be applied to image files and because we do not have the original cover for comparison. This article deals with the application of neural networks on the ...

There is a problem of a traffic block nowadays, which started in the middle of the last century and had become a real disaster for many developed countries. There is a variety of methods of traffic regulation and traffic flows management, which were developed at different times. One have become irreparably out of date and does not provide the solution of the traffic block problem in present conditions of growth of vehicles amount. Another allow to improve the management of urban traffic flows, but a lot of resourc...

We developed based on GIS method for model decision implementation to manage the process of ensuring environmental safety. Management of environmental safety requires forming processes with predetermined properties. This work presents a control concept based on synthesis, which allows fulfilling these requirements. To do this, we discussed the dialectic of the social, economic, technical-technological systems and their influence on the processes of environmental security. We show that the control of the process of...

Using interpolation techniques for predicting economic activities such as a movement of cyclist is always vitiated by an error. Therefore, this paper deals with the issue of understanding the error during modelling and compares different assessing criteria for choosing the most accurate method in order to decrease error propagation. The diagnostic of interpolation methods can be calculated with cross-validation approach. In case of kriging methods, we computed the estimated prediction standard errors and we examin...

Time series on quantities, areas harvested and yield average of key global crops in Bulgaria пїЅ wheat, maize, rise and soybean пїЅ are stored in multidimensional database. The developed software modules for statistical processing are embedded into database to give better operability than known software systems with Graphical User Interface. Time series on key global crops production in Bulgaria on national and regional level are studied for the period 2002-2015. Comparative data analysis on two sub-periods with t...

Constrained optimization problems are problems for which a function f (x) is to be minimized or maximized subject to constraints ? (x) . Here f : Rn ? R is called the objective function and F(x) is a Boolean-valued formula. In Mathematica the constraints ? (x) can be an arbitrary Boolean combination of equations g (x) ?0 , weak inequalities g (x) >=0, strict inequalities g(x)> 0, x is integer and x>0 statements. A point u ? Rn is said to be a global minimum of f subject to constraints F if u satisfies the constrai...

The paper deals with the fundamental rule of extensional logics, namely the rule of Existential Generalization. This rule can be applied in the situation when a function f is applied on its argument a to obtain the value of f at a. If the application does not fail, i.e., if the function f is defined at a, then we can existentially quantify, and derive that there is the value f(a). Our system is based on Transparent Intensional Logic (TIL). Since TIL is a hyperintensional, partial, typed lambda calculus, we examine...

The research presented in this article is concentrated on developing a series of instruments in order to include modular design in producing customized footwear for the elderly women. For those who live longer, it is important that they stay healthy, active and independent and, as a consequence, it reflects in the market growth of the industry producing goods for the elderly, the footwear industry as well. The loss of the ability to walk due to foot problem, not only produces physical limitations, but also has a s...

Geoinformation systems are widely used in many different areas of the humanities. Such systems allow to analyze, visualize historical geospatial information and what is more to support historical research processes in various situations. However an objective lack of the specialized GIS-analysis tools intended for historic, ethnographic and other research is tangible. Chronological tracking gives an example of the analysis tool aimed at solving a wide class of historic problems. The development of a geochronologica...

In this paper, the author analyzes the possibility of obtaining the orientation of geologic planes by using GPS tools. Theoretical background for such procedures is represented by an analytical model of finding the attitude by using three noncollinear points. During the experimental stage orientation measurements on synthetic planes were carried out by using GPS tools and geological compass. The output data obtained by GPS and compass was analyzed and compared by using stereographic projection. The measurement unc...

This paper presents a novel heat transfer model for the estimation of heat transfer coefficients without any information about the thermal boundary conditions. The massively parallel implementation (using the latest CUDA 8.0 framework and NVIDIA graphics cards) of the model gives the opportunity to use multiple graphics accelerators to execute the heat transfer simulations. This leads to very impressive performance which makes it possible to run thousands of simulations within a reasonable time. There are several ...

The article deals with the problem of debug of hardware computational units intended for stream data processing on FPGA. Modern solutions are usually oriented to debug of a hardware unit implementation in a simulator with some model input data or to observing the implemented design in the prototype with real target system environment. However effective analysis and debug of implemented computational algorithms requires combined debug with test data exchange between hardware unit model in simulator and its implemen...

In the paper a novel technique of impulsive noise suppression in color digital images is proposed. The new filtering design is based on the exploration of the local pixel neighborhood by geodesic digital paths, whose cost defined as a sum of squared Euclidean distances between adjacent pixels in the RGB color space, serves as a measure of pixel corruption. The digital paths link the border of a filtering window with its central pixel and the cost of a path with minimum value is used to discriminate between the noi...

The article presents our own solution of a monitoring information system developed on base of experience learned from completed projects. Information system integrates automated data collection by geodetic and non-geodetic sensors, and presentation of data through a web interface. The measuring part of the system supports data collection by multiple types of sensors. At present are pluggable leveling sensors (Leica DNA03, Leica Sprinter), GNSS sensors (Leica System 1200), 3D sensors (robotic total station Topcon G...

We consider formation of the knowledge database within geographic information systems for support the managerial decisions on the development of spatially distributed systems and territories. Knowledge database built on systematized and formalized the laws of development of objects, phenomena, events of the subject area, obtained through theoretical studies, practical activities and work experience that allows professionals to formulate and solve management problems. To represent ontologies in the knowledge base i...

In spatial data processing, the area of legislation is crucial but often neglected by the expert's community. Knowledge of the various legal aspects related to the data collection, data processing, and analysis of data, as well as publishing the results of spatial analysis and its visualization, is an essential prerequisite for effective work. Legislative aspects are understood as a set of legislative standards, their relationships and their influence on other fields of human activity. In the context of geoinforma...

This article discusses the use of different algorithms for analyzing data obtained by magnetic measurements in archaeological excavations. The aim of this work is the automatic detection of possible anomalies in data that may indicate the presence of archaeological sites. The article discusses two kinds of anomalies пїЅ useful (caused by the presence of archaeological sites) and spot anomalies (caused by the presence of various metal debris). Spot anomalies create local noise that interfere with the determination ...

Nowadays, efficient urban transportation systems have a very strong impact on economic prosperity and development. The quantity and quality of transport infrastructure can influence attractiveness and desirability of urban regions for certain industries and can affect the quality of life of its citizen. Passenger transportation systems are characterized by complexity of its behavior and a high level of uncertainty; therefore simulation technologies have become an effective tool for their modeling and managerial de...

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...