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Found 6289 publications

Logistic conception for real-time based info-communication system applied in selective waste gathering

István Lakatos Ádám Titrik Tamás Péter

Publication Name: 2017 IEEE 14th International Scientific Conference on Informatics Informatics 2017 Proceedings

Publication Date: 2017-03-27

Volume: 2018-January

Issue: Unknown

Page Range: 203-209

Description:

Decreasing of available raw materials, fossil energy source and new approach made recycling necessary and inevitable. For recycling selective waste areas have been placed, where inhabitants can drop their waste for free. Waste containers have different saturation time, while gathering process is predefined, therefore independently whether it is needed or not they will be emptied. Further problem is that there is no optimization on the way to the container, which results in serious environmental load (noise and air pollution). This study deals with high level route optimization to minimize environmental load concerning noise and air pollution and by the application of real-time communication the appropriate containers are only going to be emptied.

Open Access: Yes

DOI: 10.1109/INFORMATICS.2017.8327247

Fuzzy and Kohonen SOM based classification of different 0D nanostructures

Márk Farkas Ákos Nemcsics Antal Ürmös Zoltán Farkas Tamás Sándor L. T. Kóczy

Publication Name: Sami 2017 IEEE 15th International Symposium on Applied Machine Intelligence and Informatics Proceedings

Publication Date: 2017-03-16

Volume: Unknown

Issue: Unknown

Page Range: 365-370

Description:

In this paper, the clustering of the GaAs-based droplet epitaxially grown self-assembled nanostructures was investigated by soft-computing methods. The properties and the operation of these devices, depend on the type, the shape, the size, and their distribution of these 0 dimensional nanostructures. Because of this, it is very important to know, how and what kind of nanostructures can form, at the given technological parameters. Our goal is the classification of these nanostructures, in order to support the research and the production of these devices. Our solution is based on the shape factor calculation of the given nanostructure. In this work, two possible classification methods of nanostructures were introduced as well. First, the classification potential of the Kohonen Self-Organizing Mapping (SOM) was investigated. Second, the fuzzy inference system based classification was studied. In this case, the shape factor was determined by geometrical sizes of the nanostructures. In this paper the clustering was introduced, which supports many kinds of technology as well.

Open Access: Yes

DOI: 10.1109/SAMI.2017.7880335

A population based metaheuristic for traveling salesman type problems

Peter Foldesi Boldizsar Tuu-Szabo L. T. Kóczy

Publication Name: 2017 International Conference on Fuzzy Theory and Its Applications Ifuzzy 2017

Publication Date: 2017-03-09

Volume: 2017-November

Issue: Unknown

Page Range: 1-5

Description:

In this paper we present a metaheuristic method, called DBMEA. It combines the bacterial evolutionary algorithm with local search techniques. Based on our test results it can be used for solving efficiently more discrete optimization problems. The algorithm was tested on Traveling Salesman Problem and Traveling Repairman Problem (TRP) benchmark instances found in the literature. In the case of TSP the DBMEA algorithm produced optimal or near-optimal solutions for all tested instances. Although the most efficient TSP solver method, the Helsgaun's Lin-Kernighan heuristic was faster than DBMEA, but in the case of DBMEA the runtime was more predictable than it the case of other methods. In the case of TRP the results are competitive in terms of accuracy and runtimes with the state-of-the art methods. Except two instances our algorithm found the best-known solutions, and for the biggest tested instance it found new best solution. The runtime was on average 30% faster than the most efficient heuristic in the literature.

Open Access: Yes

DOI: 10.1109/iFUZZY.2017.8311797

Improved control performance of the 3-DoF aeroelastic wing section: a TP model based 2D parametric control performance optimization

Alexandra Szollosi Péter Baranyi

Publication Name: Asian Journal of Control

Publication Date: 2017-03-01

Volume: 19

Issue: 2

Page Range: 450-466

Description:

Based on the most recent Tensor Product model transformation solutions, the paper presents an improved control performance for the most recent version of the three Degree of Freedom aeroelastic wing section model including Stribeck friction, according to signals pitch, plunge, trailing edge and control value, based on practical engineering criteria such as overshoot, undershoot, signal end values and settling time. This is achieved through proposing a novel two dimensional parametric convex hull manipulation based method for Tensor Product model transformation based Control Design Frameworks. The approach provides two TP model representations for the different requirements of the controller and observer of a given model, opening the possibility to utilize the TP model transformation's convex hull manipulation potential in control performance optimization for a separate optimization of the two TP model representations. Numerical simulation results are provided to illustrate the control performance improvements of the aeroelastic wing section model through the proposed 2D parametric convex hull manipulation based design method.

Open Access: Yes

DOI: 10.1002/asjc.1418

Improving the audio game–playing performances of people with visual impairments through multimodal training

Runar Unnthorsson Alin Moldoveanu Hunor Nagy Oana Bălan Oana Bălan György Wersényi Florica Moldoveanu

Publication Name: Journal of Visual Impairment and Blindness

Publication Date: 2017-03-01

Volume: 111

Issue: 2

Page Range: 148-164

Description:

Introduction: As the number of people with visual impairments (that is, those who are blind or have low vision) is continuously increasing, rehabilitation and engineering researchers have identified the need to design sensory-substitution devices that would offer assistance and guidance to these people for performing navigational tasks. Auditory and haptic cues have been shown to be an effective approach towards creating a rich spatial representation of the environment, so they are considered for inclusion in the development of assistive tools that would enable people with visual impairments to acquire knowledge of the surrounding space in a way close to the visually based perception of sighted individuals. However, achieving efficiency through a sensory substitution device requires extensive training for visually impaired users to learn how to process the artificial auditory cues and convert them into spatial information. Methods: Considering all the potential advantages game-based learning can provide, we propose a new method for training sound localization and virtual navigational skills of visually impaired people in a 3D audio game with hierarchical levels of difficulty. The training procedure is focused on a multimodal (auditory and haptic) learning approach in which the subjects have been asked to listen to 3D sounds while simultaneously perceiving a series of vibrations on a haptic headband that corresponds to the direction of the sound source in space. Results: The results we obtained in a sound-localization experiment with 10 visually impaired people showed that the proposed training strategy resulted in significant improvements in auditory performance and navigation skills of the subjects, thus ensuring behavioral gains in the spatial perception of the environment.

Open Access: Yes

DOI: 10.1177/0145482x1711100206

Psychological and anthropometric characteristics of a Hungarian Elite Football academy's players

József Bognár István Csáki Selmeci Zoltán Kiss Barbara Fózer-Selmec Zsolt Szakály

Publication Name: Physical Culture and Sport Studies and Research

Publication Date: 2017-03-01

Volume: 73

Issue: 1

Page Range: 15-26

Description:

Due to the fact that neither physical nor physiological and anthropometric differences in adolescents can serve as definitive differentiating factors in terms of choosing successful and non-successful players, coaches are encouraged to focus more on thepsychological characteristics ofyoung players. Therefore, the purpose of this study was to examine football players' psychological skills in an elite football academy as related to age and position. Every young player at one of the most successful football academies in the country participated in this study (N=119, M=16.44±1.17). The sample was divided into four age groups according to the championship system (U16, U17, U18, U21), and into specific football positions (goalkeeper, defender, midfielder, and striker). Basedonthe results, the young academy football players had a low level ofamotivation (1.45±0.68), a high level of extrinsic motivation (5.96±0.64), and can be characterized with a higher level task (4.02±0.62) than ego orientation (3.01±0.62). All of the results for coping skills were in the mid-range (M=3.00-3.41). There were no differences in motivation, perceived motivational climate, and coping among the football players regarding their positions. However, there were significant differences among the age groups in perceived motivation and coping skills. Older players were more egooriented and had a higher level of peaking under pressure, while younger players demonstrated higher level task, ego, and coach ability levels. Football coaches need to focus less on positions and more on age differences when dealing with motivation, perceived motivation, and coping.

Open Access: Yes

DOI: 10.1515/pcssr-2017-0002

The spatial dimension of liturgy: Historical and contemporary accounts of communio-space in Europe's Latin rite liturgical architecture

Vilmos Katona

Publication Name: Epites Epiteszettudomany

Publication Date: 2017-03-01

Volume: 45

Issue: 1-2

Page Range: 173-213

Description:

The present study focuses on the spatial aspect of the liturgy, the raison d'être of church building. The topicality of this approach is explained either by the manner of international communication about sacred architecture, or by the work of German architect Rudolf Schwarz (1897-1961), who is cited anew, very often due to his unification of architectural praxis, scientific activity and a life of a devoted man deservedly still influential in the field. A church can be understood by its operative function. Throughout the most important liturgical reform movements of the 20th century, one can get an insight into the spatial concepts of the designers, which, consciously or not, reflect the achievements of these movements even today. In the contemporary praxis of Latin Rite liturgy, the divorce between the once close-knit aspects of the worship are palpable, thanks to these reforms on the one hand, and their late interpretations on the other. Inspired by autonomous readings, the sacrificial act of the Eucharist (sacrificium) and the symbol of the communal feast (cena) were associated with correspondent models of space. This problem shares root with the frequent contraposition of personal devotion and the communio: the former prevails in oriented spaces, while the latter appears in the central. Spatial concepts capable of respecting both religious devotion and the needs of the community in their primordial unity and theological profoundness, seldom can be found today. Following the terminology of Albert Gerhards and Walter Zahner, these are often referred to as communio-spaces (Communio-Räume). Albeit the proposition of this space type is clearly theoretical, it looks back to important antecedents from the 20th century, and defines a multiplicity of new directions. The story of communio-space spans from Rudolf Schwarz to the contemporary church architecture of Central and Western Europe as well as North America, and still influences the newest designs of liturgical spaces. In Hungary, this recent issue of spatial arrangement is not a question of a substantial debate up to now, yet even this limited number of experiments necessitate the idea and applied examples of communio-space to acquire more attention here as well.

Open Access: Yes

DOI: 10.1556/096.2017.45.1-2.9

Effects of soil compaction on cereal yield: A review

G. Milics A. J. Kovács A. Nyéki M. Neményi

Publication Name: Cereal Research Communications

Publication Date: 2017-03-01

Volume: 45

Issue: 1

Page Range: 1-22

Description:

This paper reviews the works related to the effect of soil compaction on cereal yield and focuses on research of field experiments. The reasons for compaction formation are usually a combination of several types of interactions. Therefore one of the most researched topics all over the world is the changes in the soil's physical and chemical properties to achieve sustainable cereal production conditions. Whether we are talking about soil bulk density, physical soil properties, water conductivity or electrical conductivity, or based on the results of measurements of on-line or point of soil sampling resistance testing, the fact is more and more information is at our disposal to find answers to the challenges. Thanks to precision plant production technologies (PA) these challenges can be overcome in a much more efficient way than earlier as instruments are available (geospatial technologies such as GIS, remote sensing, GPS with integrated sensors and steering systems; plant physiological models, such Decision Support System for Agrotechnology Transfer (DSSAT), which includes models for cereals etc.). The tests were carried out first of all on alteration clay and sand content in loam, sandy loam and silt loam soils. In the study we examined especially the change in natural soil compaction conditions and its effect on cereal yields. Both the literature and our own investigations have shown that the soil moisture content changes have the opposite effect in natural compaction in clay and sand content related to cereal yield. These skills would contribute to the spreading of environmental, sustainable fertilizing devoid of nitrate leaching planning and cereal yield prediction within the framework of the PA to eliminate seasonal effects.

Open Access: Yes

DOI: 10.1556/0806.44.2016.056

Knowledge management strategy as a chance of small and medium-sized enterprises

Bencsik Andrea Tímea Juhász

Publication Name: Organizational Culture and Behavior Concepts Methodologies Tools and Applications

Publication Date: 2017-02-10

Volume: 2-4

Issue: Unknown

Page Range: 577-607

Description:

This chapter shows how SMEs can compete with multinational companies. This chapter was written on the basis of practical research results. In this research, Hungarian and Slovakian SMEs were investigated from the view of a knowledge-based economy. The question was how they can face future challenges. The researchers wanted to know how SMEs handle their chance which is hidden in their way of thinking about a knowledge strategy. As a result, these companies seem to be afraid, uncertain, and think their success is only luck or a current incident. They live a "fly by night" existence, and they do not feel the importance of development, of studying, of knowledge, they run after work and money. These enterprises feel that they have to survive, and to this, they need money and financial capital. Therefore, knowledge and studying fall behind.

Open Access: Yes

DOI: 10.4018/978-1-5225-1913-3.ch028