Matej Bel University

About: Matej Bel University is a education organization based out in Banská Bystrica, Slovakia. It is known for research contribution in the topics: Tourism & Fuzzy set. The organization has 721 authors who have published 1497 publications receiving 11573 citations. The organization is also known as: Matej Bel & Univerzita Mateja Bela.

Off-Center Gaussian Functions, an Alternative Atomic Orbital Basis Set for Accurate Noncovalent Interaction Calculations of Large Systems.

Abstract: Proper description of noncovalent interactions requires, among other things, the use of diffuse atomic orbital (AO) basis sets. However, the presence of diffuse functions, especially in extended molecular systems, can lead to linear dependent AO basis sets. This in turn results, for example, in molecular orbital optimization problems or, when dependencies are removed in unpredictable and possibly geometry-dependent accuracy fluctuations. In this work, an alternative approach is proposed which suffers no linear dependence problems and delivers comparably accurate noncovalent interaction energies. An algorithm is proposed and implemented to construct a grid of off-center s-type Gaussian functions surrounding the molecule; substituting the presence of atom-centered diffuse basis functions. While the number of basis functions in the grid is comparable to the number of diffuse basis functions in aug-cc-pVXZ (for each cardinality number “X”) basis sets for small molecular systems, the ratio becomes more favorab...

Changes in stomatal characteristics and photochemical efficiency during leaf development in six species of Sorbus

Abstract: Measurements of Sorbus stomata size and density, maximal photochemical efficiency of photosystem II (Fv/Fm), variable-to-initial fluorescence ratio (Fv/F0) and potential electron acceptor capacity (‘area’) were performed during leaf development in four parental diploid species, S. aria, S. aucuparia, S. chamaemespilus, S. torminalis, and two hybrid species, S. hazslinszkyana and S. intermedia. In fully expanded mature leaves, stomata lengths and densities were significantly larger in the shrub S. chamaemespilus than in the five tree species. The best performance of both the Fv/Fm and the Fv/F0 ratio was recorded in S. intermedia, whereas S. chamaemespilus had the highest value of ‘area’. From a physiological point of view, the results of this study showed that the photosystem II reaction centers remained intact functionally through all phenological stages of leaf expansion for all examined species of Sorbus.

Local Divergences for Atanassov Intuitionistic Fuzzy Sets

Abstract: The comparison of Atanassov intuitionistic fuzzy sets (AIF-sets) is a topic that has been widely studied due to its several applications in image segmentation or decision making, among other fields. Divergences for AIF-sets (AIF-divergences) were introduced as an adequate measure of comparison for AIF-sets. This study investigates a family of AIF-divergences that satisfies a local property. Such a property allows us to compute the divergence between AIF-sets pointwise. A characterization of those AIF-divergences satisfying the local property is provided. Several interesting properties of local divergence are also discussed. Some applications of these AIF-divergences in pattern recognition and decision making illustrate their utility.

The statistical uncertainty of the Heydemann correction: a practical limit of optical quadrature homodyne interferometry

Abstract: Although the Heydemann correction is widely used to demodulate the phase of quadrature homodyne interferometer and encoder signals, the related measurement uncertainty is considered only in a few publications. The statistical uncertainty of the phase, which is the contribution of the high-frequency noise in the input signals, due to the use of a simplified fitting approach in the Heydemann correction, cannot be determined exactly. Therefore, neglecting the correlation between the input signals and the fit parameters, an approximation is provided and verified using Monte Carlo simulations and an iterative fitting method that allows exact determination of the statistical uncertainty of the phase. For the high-quality signals encountered in dimensional metrology applications, only minor differences of a few percent in the uncertainty estimates are observed. Furthermore, for cases in which a number of points used in the fit is sufficiently large, a new, simple, analytic expression for the statistical uncertainty of the phase is derived. It represents a practical limit of optical quadrature displacement interferometry, which already has been reached experimentally. To achieve an expanded measurement uncertainty of 10 pm a signal-to-noise greater than 104 has to be realized experimentally.

Social reception and understanding of combat sports and martial arts by both school students and adults

Abstract: Background/Scientific Framework: Martial arts with their many centuries of history are perceived by public opinion as a carrier of many desirable values. Apart from the health benefits they are used for moral education, and the reduction of social brutality, as well as bringing positive models of behaviour, while complacency also being a source of well-being. Problem and Aim: The paper aims to learn what both school students and adults think about combat sports and martial arts. The questions this gives rise to are: what is the public reception of martial arts and combat sports and what are the values of the training recognised by people who are not involved in Martial Arts training. Material and Methods. The research uses the diagnostic survey method of with a questionnaire. As a research tool, a modified survey questionnaire on martial arts and combat sports was used for surveying N=192 people in total (Opole, Poland, 2015). Results. The results obtained show that people not involved in the training have a favourable perception of combat sports and martial arts, while showing they also show discrepancies in opinions on the effect of training on spiritual growth and aggression, which is often perceived as a trait of people in training. Conclusions. Untrained people rank at number 1 the possibility of achieving a high level of physical fitness, then secondly, self-discipline and a healthy and clean-living lifestyle when describing the benefits of close combat training. Different opinions were found on the effect the training on children and young people, which proves the need for more attention to be paid to the educational aspects of martial arts training activities. © Idōkan Poland Association “IDO MOVEMENT FOR CULTURE. Journal of Martial Arts Anthropology”, Vol. 17, no. 1 (2017), pp. 30–37 DOI: 10.14589/ido.17.1.5