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Found 6289 publications

Study on a road surface estimation method based on big data analysis

Balazs Nemeth Dániel Pup Daniel Fenyes Peter Gaspar Ferenc Szauter

Publication Name: Saci 2019 IEEE 13th International Symposium on Applied Computational Intelligence and Informatics Proceedings

Publication Date: 2019-05-01

Volume: Unknown

Issue: Unknown

Page Range: 57-62

Description:

The paper presents a new method to classify the road surfaces according to the adhesion coefficient between the tire and road surface using big data approach. In this research, three different categories of the road surface are considered, such as dry, wet and icy. The purpose of classification is to create a model, which is able to determine the type of the actual road surface using only the measured data of the vehicle. The classification method is, basically, based on the C4.5 decision tree algorithm, while the data is provided the high-fidelity simulation software, CarSim. Finally, the efficiency of the resulted model is demonstrated through a complex simulation.

Open Access: Yes

DOI: 10.1109/SACI46893.2019.9111487

Circannual changes in major chemical composition of bulk dromedary camel milk as determined by FT-MIR spectroscopy, and factors of variation

Róbert Kocsis P. Nagy Gábor Császár J. Reiczigel J. Juhász László Varga

Publication Name: Food Chemistry

Publication Date: 2019-04-25

Volume: 278

Issue: Unknown

Page Range: 248-253

Description:

We monitored the major chemical composition of bulk dromedary camel milk by FT-MIR spectroscopy over a 5-year period. The results highly correlated with those determined with reference methods (r > 0.985, p < 0.001). Production parameters showed significant (p < 0.001) seasonal and yearly changes. The overall mean fat, protein, lactose, solids-not-fat, and total solids concentrations of bulk dromedary camel milk were 2.87%, 2.94%, 4.15%, 8.00%, and 10.69%, respectively. Month of the year, year of the study, and level of production had a strong influence on bulk milk chemical composition and yield of milk components; however, the relative effect of season on composition was greater (proportion of variance app. 50%) compared to that of other factors of variation. The highest and lowest values were measured during winter and summer, respectively. Circannual variation in major milk components was associated with environmental conditions (photoperiod, temperature), whereas it was independent of nutritional factors.

Open Access: Yes

DOI: 10.1016/j.foodchem.2018.11.059

Human Dignity in Hungary

István Kukorelli Gergely Deli

Publication Name: Handbook of Human Dignity in Europe

Publication Date: 2019-04-24

Volume: Unknown

Issue: Unknown

Page Range: 393-414

Description:

This chapter is intended to be a critical discussion of the interpretations of human dignity, as well as their changes, relevant for constitutional law in Hungary. The Fundamental Law of Hungary, in force since 1 January 2012, is characterized by a continuation of the previous constitutional situation but also by a departure from it. This is the reason why the analysis covers both the previous Constitution and the related jurisprudence of the Constitutional Court as well as the new Fundamental Law and its interpretation by the Court, in order to give a picture of the situation of human dignity in Hungary. In addition to a mere description, part of the survey will be devoted to the critical assessment of the situation. Thus, readers approaching the problem from a comparative perspective will not only find an overview of the legal text per se (law in books) and its interpretation (law in action) but may also learn about the views of some exponents of Hungarian legal scholarship.

Open Access: Yes

DOI: 10.1007/978-3-319-28082-0_17

Identification and dynamic analysis of crime hot-spots in Hungary by a complex Computer Intelligence approach

Peter Foldesi Boldizsar Tuu-Szabo Gabor Kovacs Gergő Fogarasi L. T. Kóczy Szilvia Nagy

Publication Name: Ines 2019 IEEE 23rd International Conference on Intelligent Engineering Systems Proceedings

Publication Date: 2019-04-01

Volume: Unknown

Issue: Unknown

Page Range: 247-252

Description:

In the field of forensic science, crime maps are widely used. The representation of the data and analysis could offer some steps forward for crime prevention. Clustering is able to help identify criminal hot-spots and further analysis designate which require intervention. The aim of this study is to present a first step in the analysis of Hungary-related criminal information.

Open Access: Yes

DOI: 10.1109/INES46365.2019.9109437

The number of independent elements in heat transmission matrices

Ádám Bácsi

Publication Name: International Journal of Thermal Sciences

Publication Date: 2019-04-01

Volume: 138

Issue: Unknown

Page Range: 496-503

Description:

Unsteady heat transfer processes between a heat source and the environment are completely described by the frequency-dependent heat transmission matrix within linear response theory. The 2×2 matrix characterizes the linear relation between the temperature and the heat transfer rate at the heat source and the environment sides of the system. In generic case, the heat transmission matrix has four independent complex entries. The number of independent elements may be reduced in the presence of certain properties or symmetries of the system. In the present paper, it is shown how the microscopic, governing equations influence whether the heat transmission matrix has a determinant of unity. A determinant fixed to one allows only three independent elements of the matrix. In the presence of a spatial symmetry under which the roles of the heat source and the environment are changed, the number of independent entries is reduced to two. The two independent elements may be formulated in terms of an effective thermal resistance and an effective heat capacity. In the case of a heat conducting wall, the effective values are independent of the frequency and equal to the static thermal resistance and heat capacity of the system. For generic symmetric systems, however, the effective thermal resistance and heat capacity may exhibit significant frequency dependence. The frequency dependence is numerically studied in the example of the heat conduction between two parallel pipes.

Open Access: Yes

DOI: 10.1016/j.ijthermalsci.2019.01.005

A Mobile Robot and Vehicle Occupancy Map Construction Model

Claudiu Radu Pozna Áron Ballagi Ernö Horváth

Publication Name: Ines 2019 IEEE 23rd International Conference on Intelligent Engineering Systems Proceedings

Publication Date: 2019-04-01

Volume: Unknown

Issue: Unknown

Page Range: 59-64

Description:

Occupancy gird map is a popular way of representing the environment regarding robots and vehicles. It consists of discrete cells, where each occupancy grid cell is valued independently. Because the represented grid structure is rigid it requires priori known memory resource concerning the size of the environment to obtain. Since their introduction, occupancy grid maps are still researched intensively [1] [2] [3]. In the current paper we propose the mathematical description of the computational simplification via alternative methods for occupancy map.

Open Access: Yes

DOI: 10.1109/INES46365.2019.9109531

On structural entropy and spatial filling factor analysis of colonoscopy pictures

Brigita Sziová János Pipek Szilvia Nagy

Publication Name: Entropy

Publication Date: 2019-03-01

Volume: 21

Issue: 3

Page Range: Unknown

Description:

Colonoscopy is the standard device for diagnosing colorectal cancer, which develops from little lesions on the bowel wall called polyps. The Rényi entropies-based structural entropy and spatial filling factor are two scale- and resolution-independent quantities that characterize the shape of a probability distribution with the help of characteristic curves of the structural entropy-spatial filling factor map. This alternative definition of structural entropy is easy to calculate, independent of the image resolution, and does not require the calculation of neighbor statistics, unlike the other graph-based structural entropies.The distant goal of this study was to help computer aided diagnosis in finding colorectal polyps by making the Rényi entropy based structural entropy more understood. The direct goal was to determine characteristic curves that can differentiate between polyps and other structure on the picture. After analyzing the distribution of colonoscopy picture color channels, the typical structures were modeled with simple geometrical functions and the structural entropy-spatial filling factor characteristic curves were determined for these model structures for various parameter sets. A colonoscopy image analying method, i.e., the line- or column-wise scanning of the picture, was also tested, with satisfactory matching of the characteristic curve and the image.

Open Access: Yes

DOI: 10.3390/e21030256

Eating styles of young females in Azerbaijan

Adrienn Dernóczy-Polyák Veronika Keller Rugiyya Alasgarova

Publication Name: International Review on Public and Nonprofit Marketing

Publication Date: 2019-03-01

Volume: 16

Issue: 1

Page Range: 43-60

Description:

An epidemic of twenty-first century is overweight and obesity which is a consequence of inappropriate eating habits and sedentary lifestyle. Relying on statistical data overweight and obesity is a serious problem for young people, since the ratio of obese young people (below 35) is constantly increasing in the developed regions of the world. In an empirical research 419 adult females between 24 and 38 were questioned. The aim of the research was to segment Azerbaijan females belonging to Generation Y based on their eating behaviour. In order to measure eating behaviour the shorter version of Three Factor Eating Questionnaire (TFEQ-R 18) including 18 items was used. Relying on the results three main consumer groups can be distinguished, namely functional eaters (36.3%), conscious eaters (27.2%) and emotional and hedonic eaters (36.5%). Functional eaters have average level of income and bachelor degree. They are typically single. They do moderate physical activity and have normal weight based on their BMI. Conscious eaters have high level of income (over the average) and bachelor or master degree. The ratio of married and single women is almost the same among them. They do regularly sport, mainly once a week, or at least three times a week. They can be characterized by underweight or normal body weight. Emotional and hedonic eaters have low income level and associate or bachelor degree. They are single. They follow sedentary lifestyle; none of them do high level of physical activity and they have problems with their weight (overweight or obesity). Segmenting customers based on their eating styles are really useful for health sector, especially doctors, dietetics and psychologists since they can plan their assortment based on customers’ needs or plan a personal diet.

Open Access: Yes

DOI: 10.1007/s12208-019-00218-2

Football and Politics in Twentieth-Century Hungary

Róbert Győri Szabó

Publication Name: International Journal of the History of Sport

Publication Date: 2019-02-11

Volume: 36

Issue: 2-3

Page Range: 131-148

Description:

In the eastern part of Europe football has always been in close relationship with the political sphere. As the most popular sport it was always a state affair in this area. In the countries surrounded by enemies and rivals suffering from inferiority complex, politics sometimes tried to use soccer as a means of legitimacy and propaganda. The nationalist political elites tried to exploit the political potentials of football. During the dualistic era (1867–1918) soccer was represented in Hungary as the symbol of cultural superiority especially in contrast to Austria; in the inter-war period it was an expression of symbolizing being European, the wish to belong to Western Europe and an evidence of Hungarians’ greatness in opposition to neighbouring countries. In the hands of totalitarian socialist powers, soccer became an even more important political vehicle in order to prove the superiority of socialism above capitalism, to legitimate dictatorship by exploitation football results as the regime’s own victories, and it could channel the sentiments and passions of the people. During ‘soft dictatorship’ of Kádár-era the political control over football remained unchanged, however influence was rather indirect and less drastic.

Open Access: Yes

DOI: 10.1080/09523367.2019.1629583