2687-0517
Computing, Telecommunication and Control
5
229
2015
RAR
RUS
7-17
Avtiushenko
Alla
allakadabralla@mail.ru
Ivanov
Vladimir
Computer Technologies for Converting Two-Dimensional Objects to the Three- Dimensional Scene
In this paper, we have identified the crucial importance of the three-dimensional component in the visual perception of graphical information. We have also analyzed various existing technologies of converting two-dimensional and real objects to a three-dimensional or a pseudo three-dimensional form. One of the adapted conversion technologies is summarized on the basis of this analysis. This new technology is described on the example of the «Revived Pictures» project (a real project executed in collaboration with the State Russian Museum, the result of which is a panorama of an animated picture of Ivan Shishkin demonstrated in the Corps de Garde pavilion of the Mikhailovsky Castle).
10.5862/JCSTCS.229.1
004.925
3D-image
3D-graphics
2D-graphics
information perception
vision
image
technology
animation
conversion
2D-images
https://infocom.spbstu.ru/article/2015.46.1/
01.pdf
RAR
RUS
19-32
Babakina
Nadezhda
nadia.babakina@gmail.com
Kolesnikov
Maxim
maxim.p.kolesnikov@gmail.com
AAH-8784-2019
35303230700
Vyacheslav
P.
Peter the Great St.Petersburg Polytechnic University
shkodyrev@imop.spbstu.ru
Polytechnicheskaya, 29, St.Petersburg, 195251, Russia
An Environment Representation Based on Vector Dynamical Structures in Mobile Robotics Systems
The article discusses an approach to creating vector geometric models for environment representation. In conjunction these models form a hierarchical map of some area. The problems of a mobile robot's localization and motion control can be solved using these structures. Moreover, vector models provide an additional opportunity for recognizing objects by their geometric characteristics. This is achieved by the invariant features of the model with respect to the motions of the object (robot) in space. A functional feature of the method is processing the secondary data based on a piecewise linear approximation of the edges allocated from the images of the surrounding space. This approach allows to use sensors based on different physical principles of operation. The algorithms of successive refinement of object models and adaptive statistical evaluation of the results are described. These algorithms guarantee the precision of the designed map.
10.5862/JCSTCS.229.2
004.896:004.925.8
machine vision
localization
SLAM
environment representation
environment mapping
geometric model of the object
https://infocom.spbstu.ru/article/2015.46.2/
02.pdf
RAR
RUS
33-38
Nikulina
Ekaterina
katerina.nikulina@gmail.com
Point-Spread Function Computation under the Conditions of Birefringence and Partial Coherence of Lighting using GPUs
This paper considers an application of the method of representing a complex amplitude as a superposition of plane waves to take birefringence in photolithographic systems into account. The image in transmitted light under partially coherent lighting is conducted according to the source integral method. This paper shows the computational costs of the proposed method, also mentioning the benefits of GPU computation for problem-solving of this type. Special aspects of GPU computation for non-graphical problem-solving are described. This paper introduces estimates of span time in case of computation by means of the mentioned method with GPU as well as CPU. This paper shows the results of simulating the point-spread function under different conditions.
10.5862/JCSTCS.229.3
681.7.055.4
BIREFRINGENCE
POLARIZATION
POINT SPREAD FUNCTION
PARALLEL COMPUTING
CUDA
https://infocom.spbstu.ru/article/2015.46.3/
03.pdf
RAR
RUS
39-46
Nikitin
Aleksandr
Peter the Great St.Petersburg Polytechnic University
nikitin@mail.spbstu.ru
Polytechnicheskaya, 29, St.Petersburg, 195251, Russia
Khabitueva
Ekaterina
Peter the Great St.Petersburg Polytechnic University
basilliounderground@mail.ru
Polytechnicheskaya, 29, St.Petersburg, 195251, Russia
A Surface Mount Chip Resistor Microwave Model
An accurate model for a chip resistor is required for designing microwave devices using CAD simulation. In this connection, the measured S-parameters of chip-resistors are presented in the article. The tested device has been mounted in the gap of the microstrip line. The article discusses a generalized model of the chip resistor for use in designing various microwave devices made by hybrid technology. The proposed model has been verified based on the measurement data and adequately reflects the characteristics of the chip resistor at microwave frequencies. These results can be used for CAD simulation of microwave devices made by hybrid technology.
10.5862/JCSTCS.229.4
621.37
chip resistor
model
S-parameters
microwaves
https://infocom.spbstu.ru/article/2015.46.4/
04.pdf
RAR
RUS
47-58
Khristodulo
Olga
o-hristodulo@mail.ru
Salimzynov
Iliyas
mau1er@yandex.ru
Gareeva
Nailya
nailyarg@yandex.ru
The Development of an Information System for Positioning Technogenic Hazard Objects Using Fuzzy Logic
This article describes the development of a technogenic hazard management system aimed at landfill positioning. This information system uses fuzzy logic in its operations. The article shows that providing technogenic safety is a fundamental problem in all industrialized countries. One of the main tasks in technogenic safety is landfill positioning, and one of the convenient ways of solving it is using fuzzy logic calculations. The article describes the prerequisites for using fuzzy logic, shows a multicriteria mathematical model for data processing which is normally used in landfill positioning. This model contains a set of linguistic variables describing the input conditions of the analysis and a fuzzy rules base combining these variables. Another model used in the information system is a data processing model developed in ArcGIS Model Builder. The article also presents a logic structure of the system, an example of an information system working and a comparative analysis of the efficiency of its use.
10.5862/JCSTCS.229.5
08-602
information processing systems
using fuzzy logic in GIS
technogenic safety management
multicriteria mathematical model for data processing
https://infocom.spbstu.ru/article/2015.46.5/
05.pdf
RAR
RUS
59-68
Malykhina
Galina
Kislitcina
Irina
irina_kislitsyna@mail.ru
Measurement of Motion Characteristics Using Neural Networks
A neural-network-based algorithm is offered for measuring the motion characteristics of a landing module. The measurement system is based on recording photon scattering. It uses a central photon source and four photon detectors for measuring the altitude, the traverse speed and the slope angle of the landing module. The model is intended for the initial stage of developing the information measuring system. The model allows to estimate the results of altitude, traverse speed and slope angle measurement, analyze the geometrical arrangement of photon sources and photon detectors, investigate the influence of chemical composition of underlying surface. The algorithm uses the information obtained from the photon detectors arranged on the lunar landing module and implements a state-space model of the landing module. A computer model of module motion produces training data. The generalization results allow to estimate measurement uncertainty. The simulation results of the algorithm and the estimated error of measurement of height, speed and angle of descent vehicle are presented.
10.5862/JCSTCS.229.6
681.51:621:391
neural network algorithm
lender module motion
measurement
https://infocom.spbstu.ru/article/2015.46.6/
06.pdf
RAR
RUS
69-78
Sokolov
Konstantin
vtqveant@gmail.com
Timofeev
Dmitry
Peter the Great St.Petersburg Polytechnic University
dtim@dcn.icc.spbstu.ru
Polytechnicheskaya, 29, St.Petersburg, 195251, Russia
Samochadin
Aleksandr
Peter the Great St.Petersburg Polytechnic University
Samochadin@soft-consult.ru
Polytechnicheskaya, 29, St.Petersburg, 195251, Russia
Extraction of Business Process Models from Texts
Formal models of business processes are necessary for process analysis and for developing processoriented services. Process modeling is a time-consuming task which should be performed by an expert. A large part of the expert’s work consists of gathering information about the process. In most cases, process descriptions already exist in textual form. The automated method of extracting process models from texts is required to put this knowledge into use. In this paper we develop a process extraction method for texts like records, reports, or user stories. The main feature of the proposed method is the application of process mining techniques to text analysis.
10.5862/JCSTCS.229.7
004
business process
process extraction
process mining
semantic analysis
natural language processing
https://infocom.spbstu.ru/article/2015.46.7/
07.pdf
RAR
RUS
79-87
Korelin
Vasilii
vn.korelin@gmail.com
Blekanov
Ivan
a_vanes@mail.ru
Sergeev
Sergey
Clustering of the External WEB Environment of Universities Using a Modified LSH Algorithm
The paper is dedicated to cluster analysis of external web sites of large universities (web sites that refer to universities and web sites that are referred by universities). Web sites in Russia, the USA and the UK that have highest webometric ranking in their region were chosen as the subject of the study. The goal of the research is to identify a group of sites for each university that have the same kind of activity. The found clusters have been analyzed to determine the impact of group size and the number of groups on webometric ranking of university sites. To achieve the goal of the research, the authors developed a clustering algorithm based on the probabilistic method of reducing the dimension of multidimensional data (Locality-Sensitive Hashing, or LSH). An experiment that was conducted using the test data showed that the developed algorithm has good clustering quality and fast speed performance during massive dataset mining. The main results of the research are presented.
10.5862/JCSTCS.229.8
025.4, 004
webometrics
external WEB sites of universities
clustering
locality-sensitive hashing
min hashing
external WEB sites clustering
hyperlinks analysis
https://infocom.spbstu.ru/article/2015.46.8/
08.pdf
RAR
RUS
88-96
Khassina
Eugenia
jenya-100@yandex.ru
Lomov
Andrei
lomov@math.nsc.ru
Audio Files Compression with the STLS-ESM Method
In the paper an audio compression algorithm based on modeling an audio signal by a partial solution of a certain difference equation in the time domain is investigated. The signal is modeled as a sum of exponentially damped sinusoids. Such an approach is thought to be efficient in modeling the transient segments that are present in speech audio signals and audio signals generated by conventional musical instruments. In order to approximate an audio signal frame with a solution of a difference equation, a variational (STLS) problem is solved using the inverse iteration algorithm with an updating inverse matrix. The α-version of the audio codec based on the STLS-ESM scheme was created and tested in comparison with LAME MP3 codec.
10.5862/JCSTCS.229.9
004.627
audio signals modeling
audio codec
exponential sinusoidal model
parametric identification
difference equations
variational identification method
structured total least squares
https://infocom.spbstu.ru/article/2015.46.9/
09.pdf
RAR
RUS
97-107
Maslov
Maxim
maslov@soft-consult.ru
Nosnitsyn
Semen
semen.nosnitsyn@gmail.com
Samochadin
Aleksandr
Peter the Great St.Petersburg Polytechnic University
Samochadin@soft-consult.ru
Polytechnicheskaya, 29, St.Petersburg, 195251, Russia
Loginov
Kirill
KLoginov@ibs.ru
An Architecture of an Enterprise Mobility Management Suite for Education Establishments
Integration of mobile devices and services into the corporate IT infrastructure is an essential task for many organizations. The main approach to this problem involves an enterprise mobility management (EMM) system. Commercially available EMM systems share a relatively common set of basic features that are necessary for almost any organizations. Nevertheless, a specific business may require an EMM system to implement custom functionality to support its processes. In this paper, we consider the requirements specific to the domain of education. The most important requirement is the configurability of the EMM system, as schools and universities differs greatly in the amount of students and staff, and in the structure of the educational process. We propose an EMM system architecture that matches these requirements and allows constructing a scalable and configurable solution for mobility management in education.
10.5862/JCSTCS.229.10
004.7
mobile devices
enterprise mobility management
system architecture
education
https://infocom.spbstu.ru/article/2015.46.10/
10.pdf