bluuebunny/crossref_metadata_2025 huggingface dataset:
Features of Modelling the Highway Route Using a Single Spatial “B-spline” Curve of a High Degree
Authors: Абдуллин Марат , Abdullin Marat , Глазычев Антон , Glazychev Anton , Муфтеев Валериян , Mufteev Valeriyan , Талыпов Марат , Talypov Marat , Фаттахов Мухарям , Fattahov Muharyam , Федоров Павел , Fedorov Pavel
Published: November 2019

The Russian road system is an important part of the transport structure. High wear, difficulty in driving, and a decrease in road safety lead to a decrease in the number of transportation in the country. In addition, imperfect road geometry does not allow increasing the speed mode on the highway. This article presents the features of the route simulation, taking into account the above disadvantages. The geometric aspects of the design of the road route in the plan are considered. Disadvantages and limitations of existing tracing methods are shown. The task is to select and adapt a geometric modeling program to solve the problems of high-quality road tracing in the plan. The «FairCurveModeler» program is proposed for geometric modelling of high quality curves according to smoothness criteria. A comparative testing of the methods of the «FairCurveModele»r program with the methods of the top CAD system «NX12» is carried out. The results obtained allow for a smoother construction of curves in the design of automobile and other routes.
Quasifocal Lines
Authors: Дворецкий Александр , Dvoreckiy Aleksandr , Денисова Татьяна , Denisova Tat'yana
Published: November 2019

The article proved that the highest concentration of reflected rays from the surface of the reflector is located along the quasifocal line. The quasifocal line belongs to the caustic surface of the congruence of reflected rays. The parameters of the shape and position of the quasifocal lines are described by equations. Computer visualization of reflecting surfaces, congruences of reflected rays and their caustics, quasifocal lines and maps of isolines of local concentrations on the surface of the receiver of reflected rays are presented.
Evaluation of the quality of illumination based on the luminance photo and the visualization of the 3D scene
Authors: Будак Владимир , Budak Vladimir , Желтов Виктор , Zheltov Viktor , Чембаев Виктор , Chembaev Viktor , Мешкова Татьяна , Meshkova Tat'yana
Published: November 2019

The article proposes a new criterion for lighting quality that extends the existing UGR. The proposed criterion is tested in an experiment on real lighting installations - Moscow metro stations. At metro stations, the spatial-angular distribution of luminance is measured using a camera that shoots in RAW format and a luminance meter. A luminance meter is used to normalize the image to absolute luminance values. In the experiment, observers evaluate the quality of station lighting and compare the results with the calculation of a new criterion. A high correlation of the results obtained by observers and calculated using the new quality criterion is shown. For a few stations, a 3D model is built, and the criterion is calculated according to the model. The article concludes that the quality criterion is applicable to the assessment of lighting quality. Moreover, the proposed criterion can be considered an extension of the existing UGR.
The use of a bionic image in the design of children's sledges as the most visually comfortable
Authors: Готина Анна , Gotina Anna , Хмелевский Юрий , Hmelevskiy Yuriy
Published: November 2019

This article is devoted to the choice of a bionic image as the most visually comfortable when designing industrial products. The paper describes the problem of the lack of industrial products visually comfortable artistic image. A detailed analysis of the research problem was carried out and criteria for evaluating the options for outline solutions were determined. Three artistic images of children's sledges connected with the main function of the designed product were chosen. For each artistic image, a conceptual design of the product body was created. Using the method of expert assessments by professionals in the field of design, the most promising outline solution of the case was determined in terms of aesthetic and ergonomic qualities. Based on the selected, bionic most promising solution, a three-dimensional model of the designed object was developed. In accordance with the bionic cart of children's sledges, a harmonious coloristic solution was chosen. The object has a spectacular appearance due to the vivid image of a mountain sheep, and also corresponds to aesthetic and ergonomic parameters. The article formed the stages of bionic design of a children's sled in accordance with the criteria of aesthetics and ergonomics, which can be used to design such objects.
Children's book illustration as a communication process
Authors: Фаныгина Анна , Fanygina Anna , Ризен Юлия , Rizen Yuliya
Published: November 2019

The article is devoted to features in a process of creating Children's book illustrations. In this article, illustration is considered not only as a visualization of the text part of the book, but also as the main source of getting information.
Computer-aided Metals' Microstructure Analysis. A non-standard approach to image analysis
Authors: Сивкова Татьяна , Sivkova Tat'yana , Губарев Семен , Gubarev Semen
Published: November 2019

Analysis of metals' microstructure images is an actual quantitative analysis problem, solved by quality control and research labs in the field of metallurgy. SIAMS Ltd pursues the goal of improving microstructure analysis quality, speed, and convenience. This article discusses the issues of recognition of the microstructure elements of metals and alloys, the most common problems and recognition errors, methods for solving them. Microstructure examples are given before and after digital image processing. The question of the advisability of using server technology in digital microscopy that removes such restrictions from users as the size of the shooting area and the area of microstructure analysis, binding to one working computer and one software license, as well as restrictions on the exchange of results between industry experts, will be raised.
Problems of using computer control of vermicular graphite in the microstructure of cast iron
Authors: Шаехова Ирина , Shaehova Irina , Панов Алексей , Panov Aleksey , Дегтярёва Надежда , Degtyareva Nadezhda , Иванова Валерия , Ivanova Valeriya
Published: November 2019

In recent decades, there has been an increase in industrial interest in compacted graphite iron, which has a very wide range of properties more depended on the graphite form. The same time, to date, there are no methods for controlling graphite in the microstructure of CGI necessary truth. In the present work, the automatic calculation error of the fraction of vermicular graphite is estimated, which is associated with the automatic identification error of the type of graphite inclusion. It is shown that automatic calculation without the metallographist increases accuracy in comparison with GOST 3443-87, but its error remains not acceptably high for materials science tasks and requires further improvement.
Machine Learning Methods for Classification Textual Information
Authors: Кривошеев Николай , Krivosheev Nikolay , Спицын Владимир , Spicyn Vladimir
Published: November 2019

A method for classifying textual information based on the apparatus of convolutional neural networks is considered. The text preprocessing algorithm is presented. Text preprocessing consists of: lemmatizing words, removing stop words, processing text characters, etc. The word-by-word conversion of the text into dense vectors is performed. Testing is carried out on the basis of the text data of "The 20 Newsgroups". This sample contains a collection of approximately 20,000 news stories in English, which is divided (approximately) evenly between 20 different categories. The accuracy of the best convolutional neural network used in this work on the test set was ~ 74%. The topology of the best neural network is given. The accuracy of voting of neural networks by the Bagging algorithm was ~ 81.5%. Based on a review of similar solutions, a comparison is made with the following text classification algorithms: the support vector method (SVM, 82.84%), the naive Bayes classifier (81%), the k nearest neighbors algorithm (75.93%), and the word bag.
Semantic Approach to Visualization of Evolution Dynamics of Topic Trends in Space of Scientific Publications Using t-SNE and Web-based 3D Graphics
Authors: Шарнин Михаил , Charnine Michael , Соколов Евгений , Sokolov Evgeniy , Клоков Алексей , Klokov Aleksey
Published: November 2019

This paper describes a semantic approach to visualization of 3D cyberspace of Artificial Intelligence (AI) publications and their topic trends evolution using web-based 3D graphics. The purpose of research is to group AI publications with same subject into clusters for further visualization of topic trends dynamics. An unsupervised method and algorithm for visualizing the dynamics of topic trends by generating a time series of 2D and 3D semantic visual maps with predictive information is described. The method includes semantic similarity measure and citation prediction for documents, topic modeling and clustering, dimensionality reduction, virtual reality technology, representation of dynamics using time filters. As an example of particular implementation, the method is demonstrated on AI collection data using technologies of neural network prediction, LDA clustering, t-SNE dimensionality reduction, WebVR visualization. Cluster dynamics associated with scientific trends is analyzed. The growth in number of clusters and their consolidation during the period from 1954 to 1993 is demonstrated. It is shown that 3D visual map better preserves articles similarity and highdimensional clusters structure than 2D visual map. The proposed cyberspace implemented by WebVR and interactive 3D graphics can be considered as a dynamic learning environment that is convenient for discovering new significant articles, ideas and trends.
Investigation of convective structures and phase transition induced by non-stationary boundary conditions in a horizontal layer of water
Authors: Арбузов Виталий , Arbuzov Vitaliy , Арбузов Эдуард , Arbuzov Eduard , Бердников Владимир , Berdnikov Vladimir , Дубнищев Юрий , Dubnischev Yuriy , Золотухина Ольга , Zolotuhina Ol'ga , Кислицын Степан , Kislicyn Stepan
Published: November 2019

The evolution of convective structures and the phase transition induced by non-stationary boundary conditions in a horizontal water layer bounded by flat heat-exchange surfaces were studied by shear interferometry and numerical simulation methods. Numerical modeling of the temperature field as a field of isotherms in the mode of monotonous cooling of horizontal walls was performed. The problem of fragmentary reconstruction of hilbertograms and shear interferograms images from a numerical model of the isotherm field was solved. The hydrodynamics of convective currents, the coevolution of temperature fields, interference and Hilbert structures have been modeled and studied taking into account the inversion of water density in the vicinity of the isotherm (+4°C), under conditions of phase transition and growth of the ice layer on the lower heat transfer plane. The simulation was performed using a proprietary software package. The relevance of this kind of research is due to the special importance of convection in geodynamics, physics of the atmosphere and the ocean, in hydrodynamic and thermophysical processes associated with the formation and growth of crystals.
The Influence of the Speckle Structure of the Scattered Laser Radiation on the Measurement Error of the Rough Surface Vibration Displacement
Authors: Павлов Илья , Pavlov Il'ya , Расковская Ирина , Raskovskaya Irina , Ринкевичюс Бронюс , Rinkevichyus Bronyus
Published: November 2019

The influence of the speckle structure of the scattered laser radiation on the measurement error of the rough surface vibration displacementusing laser Doppler vibrometer assembled according to a differential scheme is studied. The scheme of the experimental setup for investigation of characteristics of laser beam reflected from different surfaces is described and the obtaineed experimental images are given. It is shown that the structure of a reflected and scattered beam highly dependent on parameters of roughness of an investigated surface. Based on the results of numerical simulation, characteristic dimensions of surface irregularities are obtained, at which the beam structure is destroyed and the speckle structure is formed. It is shown that in case of a partially developed speckle structure, the error will be determined by by the relative contribution of a mirror component, a contrast and an average intensity of a speckle field. To estimate the error, a numerical simulation was performed for given parameters of a surface, beam and scatterers.
Tangible Interfaces for the Virtual Reconstructions of Museum Exhibits
Authors: Рябинин Константин , Ryabinin Konstantin , Ахтамзян Амир , Ahtamzyan Amir , Колесник Мария , Kolesnik Mariya , Сударикова Елена , Sudarikova Elena
Published: November 2019

In this paper we propose an approach to create cyber-physical museum exhibits based on the methods and means of scientific visualization, Internet of things, additive technologies and ontology engineering. Cyber-physical exhibit consists of tightly interconnected virtual and real parts. Scientific visualization is used as methodological and technological basis for presenting the virtual part, which can contain relevant digital content and 3D-reconstructions. Internet of things is a core technology to create tangible interfaces for the corresponding visualization software. Additive technologies allow creating virtual reconstructions and precise copies of museum exhibits. Ontology engineering provides adaptive mechanisms for seamless integration of new cyber-physical exhibits into the existing digital infrastructure of museums. The proposed approach is used in practice to create cyber-physical exhibits in State Darwin Museum (Moscow) and Museum of Permian Antiquities (Perm).
Selection of Satellite Image Series for the Determination of Forest Pathology Dynamics Taking Into Account Cloud Coverage and Image Distortions Based on the Data Obtained from the Key Point Detector
Authors: Трубаков Евгений , Trubakov Evgeniy , Трубаков Андрей , Trubakov Andrey , Коростелёв Дмитрий , Korostelyov Dmitry , Титарев Дмитрий , Titarev Dmitriy
Published: November 2019

Remote sensing of the earth and monitoring of various phenomena have been and still remain an important task for solving various problems. One of them is the forest pathology dynamics determining. Assuming its dependence on various factors forest pathology can be either short-term or long-term. Sometimes it is necessary to analyze satellite images within a period of several years in order to determine the dynamics of forest pathology. So it is connected with some special aspects and makes such analysis in manual mode impossible. At the same time automated methods face the problem of identifying a series of suitable images even though they are not covered by clouds, shadows, turbulence and other distortions. Classical methods of nebulosity determination based either on neural network or decision functions do not always give an acceptable result, because the cloud coverage by itself can be either of cirrus intortus type or insignificant within the image, but in case of cloudiness it can be the reason for wrong analysis of the area under examination. The article proposes a new approach for the analysis and selection of images based on key point detectors connected neither with cloudiness determination nor distorted area identification, but with the extraction of suitable images eliminating those that by their characteristics are unfit for forest pathology determination. Experiments have shown that the accuracy of this approach is higher than of currently used method in GIS, which is based on cloud detector.
A Comprehensive Solution to the Problem of the Development of Drawing Skills with the Help of Didactic Equipment
Authors: Вехтер Евгения , Vehter Evgeniya , Радченко Валерия , Radchenko Valeria , Шкляр Алексей , Shklyar Aleksey , Казакова Тамара , Kazakova Tamara
Published: November 2019

The authors of the article propose to use the didactic complex for morphological analysis in order to comprehensively solve the problem of drawing skills development at the beginning stage of training design students. This didactic complex includes visual didactic equipment and multimedia kit. In the course of the study general pedagogical methods were used: scientific and methodological literature analysis, pedagogical process planning, working methodology approbation. The project conception process was based on the system design methodology. The theoretical basis of the study is the works on the system design theory and the art education theory. The authors describe the requirements that the designer must take into account when designing didactic equipment; represent the structure of the didactic equipment and multimedia kit; offer options for working with elements of the didactic complex for morphological analysis.
A "Labyrinth" toy for 6-7 Years Old Children as a Way of Intellectual Development of a Child
Authors: Козаченко Екатерина , Kozachenko Ekaterina , Давыдова Евгения , Davydova Evgenia
Published: November 2019

The article considers the problem of a child’s quick loss of interest in a toy and its solution by creating an intellectual toy based on the experience of scientific research in the field of labyrinthology. Passing puzzles in the form of a maze have a beneficial effect on the child’s intellect, develops spatial thinking, memory and teaches the child how to find solutions to problems at a subconscious level, also disciplines and develops concentration. For a hull development the art design method was applied. A prototype of the designed toy is a cryptex - a portable storage used to hide secret messages invented by Leonardo Da Vinci and implemented by Justin Kirk Nevinson. The labyrinth system is based on the fractal tree method. The fractal labyrinth has a hierarchical (grid) structure, which creates more chances for a quick passage of the labyrinth without obstacles, but since the goal of the toy is to develop the intelligence of the child, it was decided to complicate the structure of the labyrinth by adding dead-end branches and additional tracks. Entering a dead-end branch allows the child to find and analyze the optimal moves in the game.
Image Colorization
Authors: Михалина Дарья , Mikhalina Daria , Кузьменко Александр , Kuz'menko Aleksandr , Дергачев Константин , Dergachev Konstantin , Шкаберин Виталий , Shkaberin Vitaliy
Published: November 2019

The article discusses one of the latest ways to colorize a black and white image using deep learning methods. For colorization, a convolutional neural network with a large number of layers (Deep convolutional) is used, the architecture of which includes a ResNet model. This model was pre-trained on images of the ImageNet dataset. A neural network receives a black and white image and returns a colorized color. Since, due to the characteristics of ResNet, an input multiple of 255 is received, a program was written that, using frames, enlarges the image for the required size. During the operation of the neural network, the CIE Lab color model is used, which allows to separate the black and white component of the image from the color. For training the neural network, the Place 365 dataset was used, containing 365 different classes, such as animals, landscape elements, people, and so on. The training was carried out on the Nvidia GTX 1080 video card. The result was a trained neural network capable of colorizing images of any size and format. As example we had a speed of 0.08 seconds and an image of 256 by 256 pixels in size. In connection with the concept of the dataset used for training, the resulting model is focused on the recognition of natural landscapes and urban areas.
Modern Methods of Usability Engineering of User Interface for Weboriented Environment
Authors: Кузьменко Александр , Kuz'menko Aleksandr , Аверченков Андрей , Averchenkov Andrey , Шкаберин Виталий , Shkaberin Vitaliy
Published: November 2019

The article discusses methods and tools applied for wireframing of web-environment usability engineering. Modern approaches used for wireframing via web service moqups.com. are considered. In today's world, people have to spend a lot of time at the computer therefore an important factor in the user's work with the software becomes human-machine interaction. Web-interface design taking into account all the ergonomic standards is able to reduce stress and fatigue of users as well as to improve the quality of work and satisfaction. Now, when designing user interfaces, insufficient attention is paid to ergonomics and convenience. In this paper, we use an expert approach. This method allows you to evaluate the effectiveness of the developed product when used.
Multilevel Functional-logic Models in 3D-simulators of Electrical Equipment
Authors: Сафонов Александр , Safonov Aleksandr , Копелиович Дмитрий , Kopeliovich Dmitriy
Published: November 2019

At present, much attention is paid to the training of specialists who operate at responsible and hazardous industries, using various types of benches and simulators. A special place among them is occupied by three-dimensional computer simulators, which are characterized by low cost and sufficient quality of training. The paper presents an approach to developing an integrated control system for computer simulators; its functional chart is proposed. In this work, the problem of modeling complex technical systems taking into account the criteria of complete and realistic modeling and performance is specially noted. There is also an approach to constructing simulators with variable technical object models depending on the target and with a given level of detail. The results of the work were tested in the development of simulators of electrical equipment.
Generalization of Experimental Information and Identification of Patterns in the Behavior of Metals and Alloys under Fatigue Loading Based on the Mapping of Fatigue Curves into Reduced Spaces
Authors: Андреев Вячеслав , Andreev Vyacheslav , Андреева Ольга , Andreeva Olga
Published: November 2019

The paper presents a characteristic of a fairly large sample of data on the fatigue of metals and alloys, including the coordinates of the fatigue limit and a description of the conditions under which these results were obtained. Using the reduction procedure allows us to obtain a generalized dependence of the reduced parameters of fatigue resistance, on the basis of which it is possible to develop forecasting methods. Extension of the reduction procedure to limited endurance limits allows one to obtain a generalized surface of the presented indicators of fatigue resistance and to increase the reliability of the forecasts made of indicators of fatigue resistance.
Visualizing the Process of Forming a Shock Pulse in the Deformation Zone
Authors: Киричек Андрей , Kirichek Andrey , Баринов Сергей , Barinov Sergey , Рыжкова Мария , Ryzhkova Maria , Яшин Александр , Yashin Aleksandr
Published: November 2019

The article raises the problem of visualizing fleeting processes occurring as a result of wave strain hardening (WSH). The features of this method are unique capabilities for controlling the parameters of the shock pulse. This allows, in contrast to other dynamic methods of the surface plastic deformation, forming the desired microhardness distribution diagram in the surface layer at a depth of 6- 8 mm, while ensuring the required uniformity of hardening. The need to visualize this method is explained by the complexity of the analytical description of the ongoing wave processes in the shock system and the loading medium. Developing a visualization technique based on a model of the process of wave strain hardening consists of several stages. The stages include setting the initial and boundary conditions of the simulated elements, their physical-mechanical properties, loading conditions, the type of the mesh, the process conditions. The created model allows you to visually track the shock pulse movement after the striker hits the statically pressed waveguide against the loading medium, and at the same time to see the generation of the reflected deformation wave (the tail of the shock pulse) and its effect on the shock system elements and the loading medium. The results will make it possible to develop shock systems with the highest efficiency.
A New Approach to Reducing the Distortion of the Digital Image Natural Model in the DCT Domain When Embedding Information According to the QIM Method
Authors: Евсютин Олег , Evsutin Oleg , Мельман Анна , Melman Anna , Мещеряков Роман , Meshcheryakov Roman , Исхакова Анастасия , Ishakova Anastasia
Published: November 2019

One of the areas of digital image processing is the steganographic embedding of additional information into them. Digital steganography methods are used to ensure the information confidentiality, as well as to track the distribution of digital content on the Internet. Main indicators of the steganographic embedding effectiveness are invisibility to the human eye, characterized by the PSNR metric, and embedding capacity. However, even with full visual stealth of embedding, its presence may produce a distortion of the digital image natural model in the frequency domain. The article presents a new approach to reducing the distortion of the digital image natural model in the field of discrete cosine transform (DCT) when embedding information using the classical QIM method. The results of the experiments show that the proposed approach allows reducing the distortion of the histograms of the distribution of DCT coefficients, and thereby eliminating the unmasking signs of embedding.
Software Platform for Designing and Running Artificial Intelligence Competitions with a Visualization Subsystem
Authors: Коростелев Дмитрий Александрович , Korostelev Dmitriy Aleksandrovich , Радченко Алексей , Radchenko Aleksey , Сильченко Никита , Silchenko Nikita , Крылов Ростислав , Krylov Rostislav , Мигаль Павел , Migal Pavel
Published: November 2019

The paper describes the solution to the problem of testing the efficiency of new ideas and algorithms for intelligent systems. Simulation of interaction of the corresponding intelligent agents in a competitive form implementing different algorithms is proposed to use as the main approach to the solution. To support this simulation, a specialized software platform is used. The paper describes the platform developed for running competitions in artificial intelligence and its subsystems: a server, a client and visualization. Operational testing of the developed system is also described which helps to evaluate the efficiency of various algorithms of artificial intelligence in relation to the simulation like "Naval Battle".
The Combination of Morphological and Evolutionary Algorithms for Graph-based Pathfinding on Maps with Complex Topologies
Authors: Савостин Игорь , Savostin Igor' , Трубаков Андрей , Trubakov Andrey
Published: November 2019

One of the difficult problems to solve has always been and still remains the problem of finding a path either in a graphic chart or a graphic maze of large size. The main problem is that traditional algorithms require a lot of time due to combinatorial complexity. At the same time, both classical algorithms based on the search of variants (such as Dijkstra's algorithm, A*, ARA*, D* lite), and stochastic algorithms (ant algorithm, genetic), alongside with algorithms based on morphology (wave) are not always able to achieve the goal. The article proposes a new modification of the path-finding algorithm, which is a hybrid of the following: the morphological operations on graphic chart approach and genetic algorithm having a useful property of elasticity in time. The experiments (both synthetic and real data) have shown the feasibility of the proposed idea and its comparison with the most commonly used algorithms of contemporaneity.
Methods for the Intelligent Analysis of Biomedical Data
Authors: Гегерь Эмилия , Geger Emilia , Подвесовский Александр , Podvesovskiy Aleksandr , Кузьмин Сергей , Kuzmin Sergey , Толстенок Виктория , Tolstenok Viktoriya
Published: November 2019

The paper discusses methodology of cleaning and analysis of small semi-structured samples of biomedical data. This methodology is aimed at statistical evaluation of harmful production factor correlation with workers’ laboratory test data. As a result of the analysis and interpretation of the data, a deviation from the norm is observed according to some indicators of a clinical blood test in individuals whose occupational activity is associated with harmful factors. Conclusions are drawn about the need for further research in the group of people whose work is related to harmful production factors. It is necessary to employ intelligent methods for analyzing possible health risks and their negative consequences in order to make management decisions. The presented assessment methodology can be used to create an occupational health and safety information system.
Mathematical Model of a Surface Radiance Factor
Authors: Басов Александр , Basov Alexander , Будак Владимир , Budak Vladimir
Published: November 2019

The article is devoted to the creation of a surface radiance factor mathematical model. The basis of the model is the solution of the boundary value problem of the radiative transfer equation (RTE). The surface is considered as a structure consisting of several turbid layers, each of which is characterized by its optical parameters. The top of the structure is randomly rough, uncorrelated, Fresnel. The lower boundary reflects perfectly diffusely. The complexity of solving the RTE boundary value problem for real layers is due to the fact that the suspended particles in each layer are always much longer than the wavelength. This leads to a strong anisotropy of the radiance angular distribution according to Mie theory. The solution comes down to a system of equations by the discrete ordinates method that consists of several hundred of differential equations. Subtraction of the anisotropic part from the solution based on an approximate analytical solution of the RTE allows avoiding this problem. The approximation is based on a slight decrease in the anisotropic part of the angular spectrum. The matrix-operator method determines the general solution for a complex multilayer structure. The calculation speed can be increased without compromising the accuracy of the solution with the help of the synthetic iterations method. The method consists of two stages: the first one repeats the described one with a small number of ordinates; on the second one the iteration of it is performed. The model is realised in the Matlab software.
Photorealistic Visualization of Fluorescence Materials with Dual Surface Scattering
Authors: Жданов Дмитрий , Zhdanov Dmitriy , Потемин Игорь , Potemin Igor' , Жданов Андрей , Zhdanov Andrey , Соколов Вадим , Sokolov Vadim , Ершов Сергей , Ershov Sergey , Денисов Евгений , Denisov Evgeniy
Published: November 2019

We describe a simple method to extract fluorescent characteristics of a surface by combining measurements by a "usual" gonioreflectormeter GSCM-4 and fluorimeter FP-8600. The fluorescent BDF consists of three components: glossy near-specular peak which is not fluorescent and white, highly diffuse “passive” part which is also not fluorescent but colored, and fluorescent part. The latter obviates Kasha’s-Vavilov’s rule (factorization) with good accuracy. The BDFs obtained were used in rendering and shown good visual match with the natural photographs.
Hacking VMAF with Video Color and Contrast Distortion
Authors: Звездакова Анастасия , Zvezdakova Anastasia , Звездаков Сергей , Zvezdakov Sergey , Куликов Дмитрий , Kulikov Dmitriy , Ватолин Дмитрий , Vatolin Dmitriy
Published: November 2019

Video quality measurement takes an important role in many applications. Full-reference quality metrics which are usually used in video codecs comparisons are expected to reflect any changes in videos. In this article, we consider different color corrections of compressed videos which increase the values of full-reference metric VMAF and almost don’t decrease other widely-used metric SSIM. The proposed video contrast enhancement approach shows the metric in-applicability in some cases for video codecs comparisons, as it may be used for cheating in the comparisons via tuning to improve this metric values.
Visualization of Transition's Scenarios from Harmonic to Chaotic Flexible Nonlinear-elastic Nano Beam's Oscillations
Authors: Крысько Вадим , Krys'ko Vadim , Папкова Ирина , Papkova Irina , Крылова Екатерина , Krylova Ekaterina , Крысько Антон , Krysko Anton
Published: November 2019

In this study, a mathematical model of the nonlinear vibrations of a nano-beam under the action of a sign-variable load and an additive white noise was constructed and visualized. The beam is heterogeneous, isotropic, elastic. The physical nonlinearity of the nano-beam was taken into account. The dependence of stress intensity on deformations intensity for aluminum was taken into account. Geometric non-linearity according to Theodore von Karman’s theory was applied. The equations of motion, the boundary and initial conditions of the Hamilton-Ostrogradski principle with regard to the modified couple stress theory were obtained. The system of nonlinear partial differential equations to the Cauchy problem by the method of finite differences was reduced. The Cauchy problem by the finite-difference method in the time coordinate was solved. The Birger variable method was used. Data visualization is carried out from the standpoint of the qualitative theory of differential equations and nonlinear dynamics were carried out. Using a wide range of tools visualization allowed to established that the transition from ordered vibrations to chaos is carried out according to the scenario of Ruelle-Takens-Newhouse. With an increase of the size-dependent parameter, the zone of steady and regular vibrations increases. The transition from regular to chaotic vibrations is accompanied by a tough dynamic loss of stability. The proposed method is universal and can be extended to solve a wide class of various problems of mechanics of shells.
Mathematical Modeling of the Contact Interaction of Two Nanobeams Timoshenko S.P.
Authors: Крысько Вадим , Krysko Vadim , Яковлева Татьяна , Yakovleva Tat'yana , Салтыкова Ольга , Saltykova Olga , Кружилин Вадим , Kruzhilin Vadim
Published: November 2019

The mathematical model of the contact interaction of two nanobeams obeying the kinematic hypothesis of the second approximation S.P. Timoshenko is constructed. There is a small gap between the nanobeams; an external alternating transverse load acts on the upper nanobeam. Nanobeams are isotropic, elastic, and they are connected through boundary conditions. Modified couple stress theory has been applied to describe the size-dependent effects of a beam nanostructure. Contact interaction is accounted for by the model B.Ya. Cantor. The paper studies the effect of the size-dependent coefficient. The system of differential equations is reduced to the Cauchy problem by the finite-difference method with an approximation of 0(h2) in the spatial coordinate. Further, the solution was carried out by the Runge-Kutta methods of the 4th order of accuracy in time. The convergence of numerical methods is investigated. The visualization of the results obtained by the methods of nonlinear dynamics and using wavelet transforms.
The Application of Visual Analytics Methods to Analyze the Dynamics of Stillbirth in Radiation Contaminated Areas of the Bryansk Region after the Chernobyl Disaster (1986-2016)
Authors: Корсаков Антон , Korsakov Anton , Лагерев Дмитрий , Lagerev Dmitriy , Пугач Леонид , Pugach Leonid , Трошин Владислав , Troshin Vladislav , Гегерь Эмилия , Geger Emilia , Титарев Дмитрий , Titarev Dmitriy
Published: November 2019

The relevance of the research is due to the complexity of the stage of exploratory data analysis and hypotheses for further verification by methods of statistical and/or data mining.
Objective: to apply methods of visual analysis and cognitive visualization for exploratory analysis and advance preliminary hypotheses in the process of analyzing the dynamics of stillbirth of boys and girls in all areas of the Bryansk region with different density of radioactive contamination by long-lived radionuclides Cesium-137 (137Cs) and Strontium-90 ( 90Sr), on the basis of official statistics for the long-term period (1986-2016).
Research methods: visual analytics and cognitive visualization, mathematical statistics: Shapiro-Wilk test, Student t-test, homoscedasticity test, linear regression.
Research results: the research results confirm the feasibility of using methods of visual analytics and cognitive visualization for exploratory analysis and advancement of preliminary hypotheses. The use of cognitive visualization in the process of exploratory data analysis allows the researcher to better understand the main trends and patterns in the analyzed data. This makes it possible to reduce the time required to form hypotheses by two to three times and to improve the quality of the hypotheses put forward.
SUITABILITY INDEX FOR COLLECTION BIN ALLOCATION USING ANALYTICAL HIERARCHY PROCESS (AHP) CASCADED TO ARTIFICIAL NEURAL NETWORK (ANN)
Authors: Purkayastha Debasree , Majumder Mrinmoy , Chakrabarti Sumanta
Published: November 2019

Municipal solid waste is an inevitable outcome of anthropogenic activities. Proper sustainable solid waste management is the need of the hour. In this study, a Suitability Index (S.I) has been determined which can measure the relative importance of a district with regard to its necessity or requirement of collection bins in comparison to other districts in a municipality. The S.I was computed using Analytical Hierarchy Process cascaded to Artificial Neural Network. Four criteria viz. Demographic, Social, Economic and Technical considerations and seven factors viz. Population Density (P.D), Street Width (S.W), Waste Generation Rate (W.G.R), Income Group Distribution (I.G.D), Average Minimum Distance between the bins (MIN.D), Available Number of Bins (A.N.B) and Cost of Waste Bins (C.W.B) were considered for developing the model. Available Number of Bins was found to have the highest impact on the model followed by C.W.B, W.G.R, MIN D., I.G.D, P.D, and S.W. This index will particularly help developing countries with resource constraint and unskilled labor force in Solid Waste Management. It will help such countries to easily locate districts in urgent need of collection bins with an easily available set of data and will help in increasing collection efficiency.
FACTORS AFFECTING INWARD FOREIGN DIRECT INVESTMENT: CASE OF ASEAN COUNTRIES
Authors: Grace Gabriela
Published: November 2019

The goal of this study is to identify the determinants of foreign direct investment in members of ASEAN countries (will be known as ASEAN-9 and ASEAN-7 from 1990 to 2017 by using Pooled Least Square as the model.The results show that market size, trade openness, infrastructure, research & development, and inflation have positive effects on inward FDI which can be considered as determinants of FDI. On the other hand, human capital and real interest rates show a negative sign.This study also discussed the FDI trend after the global finance crisis in 2008. The results indicate that the annual trend for FDI after 2008 is positive, which means there is no big impact from the global financial crisis of 2008 on FDI inflows.Based on the results, GDP, infrastructures, and trade openness become the important factors to attract foreign investors. Therefore, government can improve through policies, such as easing trade procedures, or improving the quantity and quality of the infrastructure.The difference finding is found on the negative result of human capital effect on inward FDI. Thus, the quality of human resources still needs improvement because it can improve thelow-tech into high-tech destination countries for FDI.
Valor Agregado Bruto de Tungurahua
Authors: Martínez Juan Pablo
Published: November 2019

Se analiza el Valor Agregado Bruto por cantones de Tungurahua periodo 2007-2009.
URL: http://revistas.uta.edu.ec/erevista/index.php/bcoyu/article/view/530
Bases del cambio de la matriz productiva
Authors: Guerrero César
Published: November 2019

La finalidad del cambio de la Matriz Productiva es generar un mayor valor agregado a la economía productiva del país a través de la construcción de una sociedad del conocimiento. Se fundamenta en transformar el modelo de generación de riqueza, pasando de sus características concentradoras, excluyentes y basadas en recursos naturales; hacia un enfoque democrático, incluyente y fundamentado en el conocimiento y capacidades de los ecuatorianos.
URL: http://revistas.uta.edu.ec/erevista/index.php/bcoyu/article/view/532
El negocio automotor en patios de autos usados en Ambato
Authors: Sánchez Ana María , Vayas Tatiana , Mayorga Núñez Fernando , Freire Carolina
Published: November 2019

Siendo la actividad comercial una de las más representativas dentro de la economía de la provincia de Tungurahua y frente a las medidas restrictivas impuestas a la importación de vehículos en el Ecuador, el Observatorio Económico y Social de Tungurahua – OBEST, realiza un estudio a este sector para determinar el comportamiento del comercio de vehículos usados en Ambato y sus perspectivas de crecimiento. Se recoge información primaria mediante cuestionario aplicado a representantes de patios de vehículos usados del cantón Ambato y obtiene información que evidencia la situación real de este sector comercial en lo que va del año 2016.
Palabras clave: Medidas restrictivas de importación, comportamiento, vehículos usados, situación real.
URL: http://revistas.uta.edu.ec/erevista/index.php/bcoyu/article/view/615
Cuarto sondeo de opinión ciudadana de instituciones, autoridades y aspectos locales de la zona urbana del cantón Ambato
Authors: Mayorga Núñez Fernando , Vayas Tatiana , Freire Carolina , Rivera Badillo Lorena
Published: November 2019

En este artículo se presentan los resultados del cuarto sondeo de opinión ciudadana realizado en la zona urbana del cantón Ambato para determinar el nivel de imagen de sus instituciones y la percepción sobre la credibilidad de las autoridades de la provincia de Tungurahua, así como también medir, a través del índice de percepción ciudadana, aspectos locales relacionados con servicios básicos, seguridad vial, calidad del transporte público, seguridad ciudadana e instituciones de educación superior.
Palabras clave: Índice, opinión, percepción ciudadana, sondeo.
URL: http://revistas.uta.edu.ec/erevista/index.php/bcoyu/article/view/619
Actividad aseguradora, estrategia y resultados en Ecuador
Authors: Sánchez Sánchez Mauricio
Published: November 2019

Mucho ha cambiado la actividad aseguradora en Ecuador desde sus inicios, el presente trabajo se plantea el objetivo de realizar un seguimiento a los resultados alcanzados por las empresas enfocadas en seguros generales y determinar si estos responden a una estrategia. Se analizan datos oficiales de la Superintendencia de Bancos del Ecuador, de 27 compañías de seguros. Se identificaron cinco grandes actores que captan sobre el 50% del mercado, sin embargo no todas las grandes logran los mejores resultados, actores de menor tamaño dan muestras claras de haber pasado de la teoría a la práctica en lo que a estrategia se refiere.
Palabras clave: Seguros, compañías, empresas, estrategia.
URL: http://revistas.uta.edu.ec/erevista/index.php/bcoyu/article/view/626
La salud en la provincia de Tungurahua y su importancia en el desarrollo económico local
Authors: Coello Gómez Gladys
Published: November 2019

La salud no solamente tiene que ver con la ausencia de la enfermedad, sino que es un componente del capital humano, que está determinado por las circunstancias o el medio en el que las personas nacen, crecen, viven, trabajan y envejecen, incluido el sistema de salud, cuyas características son el resultado de la distribución de la riqueza, del poder y de los recursos. En la presente investigación, se efectúa una observación de la situación de salud de los tungurahuenses, factor clave del desarrollo económico local.
Palabras clave: Desarrollo económico, sistema de salud, capital humano.
URL: http://revistas.uta.edu.ec/erevista/index.php/bcoyu/article/view/631
Principios tributarios de eficiencia y simplicidad administrativa: Caso retenciones en la fuente del Impuesto a la Renta
Authors: Paredes Paredes Eduardo , Guevara Perrazo Gabriela
Published: November 2019

El trabajo contiene un análisis sobre el cumplimiento de los principios constitucionales tributarios de eficiencia y simplicidad administrativa, en el caso de Retenciones en la Fuente del Impuesto a la Renta en el Ecuador (cuya recaudación es administrada por el Servicio de Rentas Internas - SRI), que se realizan a las personas naturales no obligadas a llevar contabilidad, que no han superado la base para el pago del impuesto a la renta. El problema radica en que el impuesto retenido, se constituye en pago indebido, al no nacer la obligación tributaria, lo cual acarrea más trámites al SRI y otras implicaciones.
Palabras clave: Principios, eficiencia, simplicidad, retenciones, administración tributaria.
URL: http://revistas.uta.edu.ec/erevista/index.php/bcoyu/article/view/633
Aproximación epistémica del liderazgo desde el humanismo y la complejidad
Authors: Sumoza Matos Rolando
Published: November 2019

Como base de la fase epistemológica de una investigación más extensa, se aborda el liderazgo en sus aspectos generales, haciendo énfasis en los fundamentos de efectividad organizacional y el desenvolvimiento por conciencia del ser humano. Se trata de una visualización desde el ser humano como ser integral entre la racionalidad, la inteligencia operativa y el proceso emocional, con sus respectivos procesos aperceptivos y la complejidad que esto representa. La organización es vista desde los aspectos de la construcción social de la realidad, producto de los procesos introspectivos, retrospectivos y prospectivos del individuo, ejecutando su rol de líder o de liderado, como fases fundamentales de los aspectos funcionales y jerárquicos de cualquier estructura organizacional.
Palabras Claves: Liderazgo, humanismo, complejidad humana, apercepción.
URL: http://revistas.uta.edu.ec/erevista/index.php/bcoyu/article/view/637
Gobiernos locales en Ecuador y Uruguay: una comparación de los modelos anglosajón y europeo
Authors: Martínez Juan Pablo , Chisag Punina Milton , Carrera Aguaguiña Cristina
Published: November 2019

En el presente artículo se analiza el proceso de la descentralización municipal en América Latina, principalmente en los países de Ecuador y Uruguay. Con el objetivo de conocer los motivos que impulsaron la adopción de los gobiernos locales para analizar la situación actual de cada país. Para lo cual a partir de los lineamientos planteados por Nickson (2011), se realiza un análisis comparativo de los modelos “anglosajón” y “europeo”. Concluyendo que el sistema ecuatoriano se ajusta a ambos modelos mientras que el modelo uruguayo se acopla al modelo anglosajón.
Palabras claves: Descentralización, gobierno local, autonomía, participación ciudadana, municipios.
URL: http://revistas.uta.edu.ec/erevista/index.php/bcoyu/article/view/639