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Found 6383 publications

How human catabolism processes relate to the combustion of liquid fuels regarding oxygen consumption and carbon dioxide emissions in Hungary

György Szabados Jozefin Hézer Tamás Koller Iván Nagyszokolyai

Publication Name: Idojaras

Publication Date: 2022-04-01

Volume: 126

Issue: 2

Page Range: 233-246

Description:

— In connection with road vehicles and their internal combustion engines, their effects on our environment are being dealt with more and more. Plenty of parameters could be listed, but human catabolism and combustion of liquid fuels probably have not been examined together. Carbon dioxide has the most priority as a greenhouse gas in environmental change and metrology, thus it is a constant topic. Oxygen consumption has been examined rarely or never in such a context. In this article, calculations have been carried out from different points of view regarding these two parameters. The results of total-quantity calculations show, that the oxygen demand for the combustion of fuels used for road transport in 2019 in Hungary is the same as the 6-year oxygen demand of the Hungarian population, and the amount of the carbon dioxide emitted by the combustion of fuel used in road transport in Hungary is the same as the amount emitted by the Hungarian population during 5.2 years. The results might be worth examining on a larger scale.

Open Access: Yes

DOI: 10.28974/idojaras.2022.2.4

Preface

Janusz Kacprzyk Piotr Kulczycki Radko Mesiar László T. Kóczy

Publication Name: Advances in Intelligent Systems and Computing

Publication Date: 2017-01-01

Volume: 462

Issue: Unknown

Page Range: v-vi

Description:

No description provided

Open Access: Yes

DOI: DOI not available

Fuzzy signature based mobil robot motion control system

Áron Ballagi László T. Kóczy

Publication Name: Sami 2008 6th International Symposium on Applied Machine Intelligence and Informatics Proceedings

Publication Date: 2008-08-25

Volume: Unknown

Issue: Unknown

Page Range: 29-33

Description:

The differentially steered drive system used in many robots is essentially the same arrangement as that used in a wheelchair. Thus, steering the robot is just a matter of varying the speeds of the drive wheels. At least two independent driving chain are used in most of differentially steered drive system. Each driver wheel has the own controller in a traditional motion system, which give a hard tuned, rigid arrangement. In this paper we propose a complex lateral drift control method base on fuzzy signatures. This method inspects the motion system as a whole, unlike as simple parts of a complex system. The state space is written down by fuzzy signatures which adds up flexibility, adaptability and learning ability to system. © 2008 IEEE.

Open Access: Yes

DOI: 10.1109/SAMI.2008.4469193

The European Union Strategy on Central Asia: out of game?

Laszlo Vasa

Publication Name: Romanian Journal of European Affairs

Publication Date: 2020-12-01

Volume: 20

Issue: 2

Page Range: 121-130

Description:

The Council of the European Union adopted in June 2019 its new EU Strategy on Central Asia. Besides the Eastern Partnership, the Central-Asian region is one of the most relevant areas for the EU, so determining and shaping its development priorities were of paramount importance. In this study, based on the developments and feedbacks in recent months, I would like to demonstrate how the weak EU image due to this document will be strengthened and why it is not suitable for reaching the goals which are probably even not existing. My hypotheses are: 1) in fact, the EU does not have any clear and real strategy focusing on Central Asia, 2) the EU is losing out on the game of big and middle powers interested in the region, 3) the EU cannot exploit the economic potentials of the region.

Open Access: Yes

DOI: DOI not available

Occurrences of Nanocyperion species in West Hungary - Role of moist plough-lands in conservation

Mesterházy Attila Gergely Király Robert W. Pal A. Király Gyula Pinke

Publication Name: Journal of Plant Diseases and Proctection Supplement

Publication Date: 2008-04-28

Volume: Unknown

Issue: 21

Page Range: 413-417

Description:

In the last decades in Hungary biotopes of Nanocyperion species have been reduced significantly according to the melioration and the declining of pasturing. Owing to the habitat loss more species such as the examined Lindernia procumbens, Eleocharis ovata, Centunculus minimus, Limosella aquatica, Juncus sphaerocarpus and Elatine triandra became endangered all over the country. During the researches site requirements of these species were analysed as well as their connection with the cultivated species and the soil cultivation carried out on the plough-lands. According to our experiences in West Hungary actual occurrences of Lindernia procumbens, Centunculus minimus, Juncus sphaerocarpus and Elatine triandra are related strongly to the plough-lands. Eleocharis ovata and Limosella aquatica occur on plough-lands less frequently, exist mainly on other pioneer moist habitats. It can be established in case of all the 6 examined species that their habitat spectrum has extended by the increasing in the territory of ploughs forming spacious convenient biotopes for these species. © Eugen Ulmer KG.

Open Access: Yes

DOI: DOI not available

Investigation of Shear Strength Reduction Method in Slope Stability of Reinforced Slopes by Anchor and Nail

Seyed Mohammad Reza Imam Farshad Astaraki Majid Movahedi Rad Jafar Chalabii Seyedsaber Hosseini

Publication Name: Buildings

Publication Date: 2024-02-01

Volume: 14

Issue: 2

Page Range: Unknown

Description:

Since the stability of slopes in infrastructures such as road and railroad embankments, excavations, and, in general, earthwork is important, analyzing the stability of these slopes has been one of the main focuses of geotechnical engineers. Although analyzing both reinforced and unreinforced slopes is needed, reinforced slopes require special attention as the reinforcement elements significantly affect the calculations. Hence, the current study’s aim is to find out the differences between obtained safety factors using the Limit Equilibrium Method (LEM) and Shear Strength Reduction Method (SSRM). For this purpose, first, the origin differences in terms of Safety Factor (SF) are theoretically determined according to basic formulas for the aforementioned techniques. Then, to verify the formula, several numerical modelings are carried out using in situ measured geotechnical data to better understand the differences in terms of safety factors. The results indicate that for the reinforced slope with an SF value of higher than 1, the SSRM provides a higher SF in comparison with the other techniques, and the origin of this difference is the definitions of the SF in the different methods.

Open Access: Yes

DOI: 10.3390/buildings14020432

On the constrained OWA aggregation problem with single constraint

Lucian Coroianu Robert Fuller

Publication Name: Fuzzy Sets and Systems

Publication Date: 2018-02-01

Volume: 332

Issue: Unknown

Page Range: 37-43

Description:

In this note we present a simple proof for the constrained OWA aggregation problem with a single constraint but with variable coefficients.

Open Access: Yes

DOI: 10.1016/j.fss.2017.04.013

Non-simplex enclosing polytope generation concept for Tensor Product model transformation based controller design

Péter Galambos József Kuti Péter Baranyi

Publication Name: 2016 IEEE International Conference on Systems Man and Cybernetics Smc 2016 Conference Proceedings

Publication Date: 2017-02-06

Volume: Unknown

Issue: Unknown

Page Range: 3368-3373

Description:

In polytopic model-based controller synthesis, the vertices of the model determine the achievable performance characteristics. This paper introduces a new concept, that allows for the sophisticated construction of non-simplex enclosing polytopes. The non-simplex structures in general, have much better descriptor properties than the simplex one that leads to less conservative synthesis. The paper demonstrates the workflow of controller design for a nonlinear system through the example of the TORA (Translational Oscillator with a Rotational Actuator) system. The numerical results clearly show that the proposed approach is capable of excluding non-stabilizable regions located between the exact convex hull and the enclosing simplex. The non-simplex polytope leads to an increased number of vertices but it practically does not influence the viability of Tensor-Product (TP) formalization and the feasibility of controller design while the achievable control performance can be improved significantly.

Open Access: Yes

DOI: 10.1109/SMC.2016.7844754

Determinants of ChatGPT adoption among students in higher education: the moderating effect of trust

Morteza Ghobakhloo Mohammad Iranmanesh Behzad Foroughi Nagaletchimee Annamalai Abderahman Rejeb Bita Naghmeh-Abbaspour Madugoda Gunaratnege Senali

Publication Name: Electronic Library

Publication Date: 2025-01-22

Volume: 43

Issue: 1

Page Range: 1-21

Description:

Purpose: ChatGPT is a cutting-edge chatbot powered by artificial intelligence that could revolutionise and advance the teaching and learning process. Drawing on the technology acceptance model (TAM) and information system (IS) success model, this study aims to investigate determinants of students’ intention to use ChatGPT for education purposes. Design/methodology/approach: The partial least squares technique was used to analyse 406 usable data collected from university students in Malaysia. Findings: The results confirmed the relationships between perceived usefulness (PU), perceived ease of use (PEU), attitude and intention to use proposed by TAM. PU and PEU are influenced by system quality. Surprisingly, trust in information moderates negatively the influences of PEU and PU on attitude. Practical implications: The findings provide insight for higher education institutions, unit instructors and ChatGPT developers on what may promote the use of ChatGPT in higher education. Originality/value: The study contributes to the literature by exploring the determinants of ChatGPT adoption, extending the TAM model by incorporating IS success factors and assessing the moderating effect of trust in information.

Open Access: Yes

DOI: 10.1108/EL-12-2023-0293