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13 Papers

Measuring the Complexity of User Processes using Shannon Entropy and Stochastic Petri Nets

Topics: System Performance; Design and Evaluation; Decision Making

Authors: Martin Ibl and Žaneta Boruchová

Affiliation: University of Pardubice, Czech Republic

Digital Object Identifier: 10.5220/0006584502120217

Proceedings of CHIRA 2017, ISBN: 978-989-758-267-7

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Measuring complexity of processes or systems is currently a very popular topic. There is a wide range of defined complexity measures that quantify features such as legibility, modifiability, uncertainty, comprehensibility, easiness of implementation, user-friendliness and many others. The content of this work is a presentation of a method for quantification of complexity using Shannon entropy and stochastic Petri nets. Shannon entropy and Petri nets are an appropriate combination because they allow analysing the complexity of processes not only in terms of their structure but also in terms of their dynamic development under tension. On a simple example are outlined possible analyses and the correlation analysis examines the comparability with other selected complexity measures.

A Proposal of Web Data Mining Application for Mapping Crime Areas in the Czech Republic

Topics: Decision Support Systems; Cloud Applications

Authors: Martin Lněnička , Jan Hovad , Jitka Komárková and Miroslav Pásler

Affiliation: University of Pardubice, Czech Republic

Digital Object Identifier: 10.5220/0005558104500455

Proceedings of ICSOFT-EA 2015/ICSOFT, ISBN: 978-989-758-114-4

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In this paper, authors offer a new view on the issue of the geography of crime areas. The paper proposes an interface to support the decision-making process in the reasonable time. The proposed application is used to extract crime related information, find crime hotspots and present crime trends using web data mining techniques. The target area is the sum of all administrative districts of municipalities with extended powers in the Czech Republic. Every crime problem is related to some location, whether it is an address, street or district. The proposed application scans the selected mass media servers for the words connected with the crime type and the concrete municipality. This paper shows the detailed overview about the proposed and used architecture, methods and data structures.
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Artificial Intelligence

Data Engineering

Health Engineering and Technology Applications

Business Analytics

Decision Support Systems

Knowledge-Based Systems

Cardiovascular Technologies

Decision Support Systems, Remote Data Analysis

Software Engineering

Cloud Applications

Distributed and Mobile Software Systems

Symbolic Systems
Computing and Telecommunications in Cardiology

Amorphous Ge-As-Te Thin Films Prepared by Pulsed Laser Deposition - A Photostability Study

Topics: Photorefractive Effects, Materials, and Devices; Optical Materials

Authors: M. Bouška 1 , P. Hawlová 1 , V. Nazabal 2 , L. Beneš 3 and P. Němec 1

Affiliations: 1 University of Pardubice, Czech Republic , 2 University of Pardubice and Université de Rennes 1, Czech Republic , 3 v.v.i. and University of Pardubice, Czech Republic

Digital Object Identifier: 10.5220/0005338301030107

Proceedings of PHOTOPTICS 2015, ISBN: 978-989-758-092-5

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Pulsed laser deposition was used for the fabrication of amorphous thin films from Ge-As-Te system with the aim to study their intrinsic photostability. Photostability of prepared layers was studied using spectroscopic ellipsometry within as-deposited as well as relaxed layers. For irradiation, laser sources operating at three energies (1.17, 0.92 and 0.8 eV) in band gap region of the studied materials were employed. The lowest values of photorefraction (refractive index changes) accompanied with lowest changes of band gap values present Ge20As20Te60 thin films, which are therefore considered as the layers with highest photostability, especially in relaxed state.
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Mobile Software and Services

Photonics, Optics and Laser Technology

Telecommunications

Optical Materials

Photorefractive Effects, Materials, and Devices

Wireless Information Networks and Systems
Optics

Fabrication of Surface Relief Optical Elements in Ternary Chalcogenide Thin Films by Direct Laser Writing

Topics: Photonic and Optoelectronic Materials and Devices; Optical Materials

Authors: I. Voynarovych 1 , R. Poehlmann 2 , S. Schroeter 2 and M. Vlcek 1

Affiliations: 1 University of Pardubice, Czech Republic , 2 Leibniz Institute of Photonic Technology, Germany

Digital Object Identifier: 10.5220/0005404001340139

Proceedings of PHOTOPTICS 2015, ISBN: 978-989-758-093-2

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Direct laser writing with a continuous-wave high intensity and over-band gap laser is applied to realize surface relief optical elements in ternary As-S-Se and Ge-As-S thin chalcogenide films. The topology of created structures in dependence on the experimental conditions is investigated. Analyses indicate that the formation mechanisms of the surface patterns are thermally induced processes generated by the local heating and involve thermoplastic deformation, mass flow induced by the surface tension gradient and evaporation. Diffractive gratings with a period of 2.56 m, depths of up to 100 nm, and different periodic surface structures were patterned at the surface of 1 m thick films. The spectral dependencies of diffraction efficiency were measured and discussed.
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Mobile Software and Services

Photonic and Optoelectronic Materials and Devices

Telecommunications

Optical Materials

Photonics

Wireless Information Networks and Systems
Optics

Photonics, Optics and Laser Technology

Holographic Recording of Surface Relief Gratings on As40S60-xSex Thin Films

Topics: Photodetectors, Sensors and Imaging; Optoelectronics; Optical Materials

Authors: L. Loghina 1 , J. Teteris 2 and M. Vlcek 1

Affiliations: 1 University of Pardubice, Czech Republic , 2 University of Latvia, Latvia

Digital Object Identifier: 10.5220/0005403201210124

Proceedings of PHOTOPTICS 2015, ISBN: 978-989-758-092-5

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The studies of direct holographic recording of the surface relief gratings on amorphous As40S60-xSex thin films are presented. These gratings were created upon exposure to polarized laser beams of various wavelengths (λ = 473 - 650 nm). The orthogonally ±45° linearly polarized light beams were used for recording. The surface structure of the relief gratings was investigated by atomic force microscopy. The influence of laser beam wavelength and spatial frequency of the gratings recorded (grating period Ʌ) on the surface relief gratings formation for every composition was examined.
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Lasers

Optoelectronics

Photonics, Optics and Laser Technology

Mobile Software and Services

Photodetectors, Sensors and Imaging

Telecommunications

Optical Materials

Photonics

Wireless Information Networks and Systems
Optics

Kinetics of Photosensitivity in Ge-Sb-Se Thin Films

Topics: Photorefractive Effects, Materials, and Devices; Optical Materials

Authors: M. Olivier 1 , R. Boidin 1 , P. Hawlová 1 , P. Němec 1 and V. Nazabal 2

Affiliations: 1 University of Pardubice, Czech Republic , 2 Université de Rennes 1 and University of Pardubice, France

Digital Object Identifier: 10.5220/0005332000670072

Proceedings of PHOTOPTICS 2015, ISBN: 978-989-758-092-5

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Chalcogenide (GeSe2)100-x(Sb2Se3)x thin films obtained using pulsed laser deposition are exposed to light with energy close to band gap energy, in order to investigate kinetics of photoinduced phenomena. It appears that a reversible transient photodarkening is observed. The metastable part of photodarkening, which seems to be slower, is followed by photobleaching. A modelling of the evolution of transmission during illumination suggests that each process has an independent effective time constant, and that magnitude of photoinduced phenomena depends on various parameters, such as laser’s fluency, absorption coefficient and composition.
Collapse Button Related Ontology Subjects/Areas/Topics (7)
Mobile Software and Services

Photonics, Optics and Laser Technology

Telecommunications

Optical Materials

Photorefractive Effects, Materials, and Devices

Wireless Information Networks and Systems
Optics

Usability Evaluation Methods for Spatial Information Visualisation - Case Study: Evaluation of Tourist Maps

Topic: Human- Computer Interaction and Usability Engineering

Authors: Pavel Sedlák , Jitka Komárková , Miloslav Hub , Stanislav Struška and Miroslav Pásler

Affiliation: University of Pardubice, Czech Republic

Digital Object Identifier: 10.5220/0005557904190425

Proceedings of ICSOFT-EA 2015/ICSOFT, ISBN: 978-989-758-114-4

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Many decisions are influenced by location. Geoinformation technologies together with digital data are today very often used to support spatially-oriented decisions. Another reliable way of spatial information presentation is represented by analogue maps. This contribution describes utilization of software engineering methods in cartography to evaluate and improve quality of maps. Authors have long experience with utilization of usability evaluation of Web based geographic information systems. They propose utilization of suitable methods to evaluate usability of analogue maps. Usability of analogue tourist maps of attractive areas of the Czech Republic was evaluated by means of proposed methods. Maps published by the most famous publishers in the Czech Republics, i. e. maps published by Kartografie Praha, a. s., SHOCart, spol. s r. o., Klub českých turistů o. s. and Geodézie On Line were evaluated. Usability User Testing and Heuristic Evaluation were used as methods for usability evaluation. The main results of case studies are briefly described in the paper. Results of one case study are processed by multi-criteria decision making methods. Benefits and weaknesses of used methods derived from author experience are stated in the end.

Measurement of Fairness in Process Models Using Entropy and Stochastic Petri Nets

Topics: Model Analysis and Checking; Modeling Languages

Author: Martin Ibl

Affiliation: University of Pardubice, Czech Republic

Digital Object Identifier: 10.5220/0005098301150120

Proceedings of ICSOFT-PT 2014/ICSOFT, ISBN: 978-989-758-037-6

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Measurements of various properties of the process models in the last few years become relatively widely explored area. These are properties such as uncertainty, complexity, readability or cohesion of process models. Quantification of these properties can provide better insight in term of, for instance, user-friendliness, predictability, clarity, etc. of the process model. The aim of this work is to design a method for quantification of fairness in the process models which are modelled using stochastic Petri nets. The method is based on mapping the set of all reachable markings of Petri net into Markov chain and then quantification of entropy from stationary probabilities of the individual places (all places or a specific subset). The resulting value of fairness is from the interval <0, 1>.
Collapse Button Related Ontology Subjects/Areas/Topics (5)
Model Analysis and Checking

Models

Software Engineering
Modeling Languages

Paradigm Trends

Parametrical and Procedural Approach in the LIDAR Data Visualisation - Complex Creation of the Photorealistic and Accurate 3D Model of the Surface

Topics: Intelligent Problem Solving; Client/Server Computing

Authors: Jan Hovad and Jitka Komarkova

Affiliation: University of Pardubice, Czech Republic

Digital Object Identifier: 10.5220/0005098001560161

Proceedings of ICSOFT-EA 2014/ICSOFT, ISBN: 978-989-758-036-9

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Author presents a new hybrid method for LIDAR processing in the form of complex, real-world attribute-based 3D digital model of the terrain. This model can be widely used for 3D GIS analyses, visualization for public contracts, construction of new communications (roads), GPS navigation and generating individual views from any location. Model is based on the LIDAR scanned values that are transferred into the quadrilateral polygonal form. The main goal is to reconstruct large scale areas in 3D by slope based quadrilateral grids that are interpolated from irregular raw structure. Laser scan is checked and corrected. It is simplified by chosen interpolation technique into the quadrilateral set of grids (C++). Each grid has different resolution to lower hardware requirements. Raw scan is analysed by slope factor and is used further to classify grids into a groups. Classified grids are processed by 3D scripting language to form polygonal terrain model. Vector and polygonal data are converted into 3D and utilized to reconstruct surface features and terrain classes. Set operations are used to divide digital terrain model into the segments. Set of high polygonal models is created for each class. These models are scattered on the top of the classified polygonal surface.
Collapse Button Related Ontology Subjects/Areas/Topics (8)
Artificial Intelligence

Intelligent Problem Solving

Software Engineering

Client/Server Computing

Knowledge Engineering and Ontology Development

Symbolic Systems
Enterprise Software Technologies

Knowledge-Based Systems

Distributed Processing of Elevation Data by Means of Apache Hadoop in a Small Cluster

Topics: Distributed Architectures; Performance Evaluation; Parallel and High Performance Computing

Authors: Jitka Komarkova , Jakub Spidlen , Devanjan Bhattacharya and Oldrich Horak

Affiliation: University of Pardubice, Czech Republic

Digital Object Identifier: 10.5220/0004591303400344

Proceedings of ICSOFT-EA 2013/ICSOFT, ISBN: 978-989-8565-68-6

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Geoinformation technologies require fast processing of high and quickly increasing volumes of all types of spatial data. Parallel computational approach and distributed systems represent technologies which are able to provide required services, with reasonable costs. MapReduce is one example of such approach. It has been successfully implemented in large clusters in several instances. The applications include spatial and imagery data processing. The contribution deals with its implementation and operational performance using only a very small cluster (consisting of a few commodity personal computers) to process large-volume spatial data. Open-source implementation of MapReduce, named, Apache Hadoop, is used. The contribution is focused on a low-price solution and it deals with speed of processing and distribution of processed files. Authors run several experiments to evaluate the benefit of distributed data processing in a small-sized cluster and to find possible limitations. Size of processed files and number of processed values is used as the most important criteria for performance evaluation. Point elevation data were used during the experiments.
Collapse Button Related Ontology Subjects/Areas/Topics (8)
Data Communication Networking

Parallel and High Performance Computing

Software Project Management

Distributed and Mobile Software Systems

Performance Evaluation

Telecommunications
Distributed Architectures

Software Engineering

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