Search in Publications

Found 6412 publications

Number archetypes in system realization theory concerning the fine structure constant

Peter Varlaki László Nádai József Bokor

Publication Name: 12th International Conference on Intelligent Engineering Systems Proceedings Ines 2008

Publication Date: 2008-09-02

Volume: Unknown

Issue: Unknown

Page Range: 83-92

Description:

In this paper we analyze in detail the central role of number '137', the so-called Fine Structure Constant in the collaboration of Pauli and Jung. First, we present the fascination or the obsession of Pauli for the interpretation of number '137'. Second, we treat the spontaneous messages originating from unconscious concerning number '137' in the well-known dreams of Pauli. We restrict our investigations to the dreams containing the especially important formulae of Fine Structure Constant (4π3 + π2 + π), and also that containing the so-called background models of mathematical control systems. Third, we shortly mention four of the numerous synchronicities arising during the Pauli-Jung collaboration. © 2008 IEEE.

Open Access: Yes

DOI: 10.1109/INES.2008.4481274

Parametric Investigation of Interaction between Soil-Surface Structure and Twin Tunnel Excavation: A Comprehensive 2D Numerical Study

Hussein Ahmad Ammar N. Alnmr Ashraf Sheble Richard P. Ray

Publication Name: Infrastructures

Publication Date: 2023-08-01

Volume: 8

Issue: 8

Page Range: Unknown

Description:

The growing demand for transportation tunnels in densely populated urban areas has led to the widespread adoption of twin tunnel configurations in contemporary infrastructure projects. This research focuses on investigating the complex interaction between soil, structures, and the excavation of twin tunnels. The study employs the tunnel boring machine (TBM) method and utilizes two-dimensional numerical modeling based on the finite element method (FEM). The numerical model is validated by comparing its results with field measurements obtained from a twin tunnel project in Italy, specifically the New Milan Metro Line 5. A comprehensive parametric study is conducted to analyze various parameters that influence soil–structure interaction during tunnel excavation. These parameters include the positioning of the tunnels in relation to each other, the spacing between them, the presence of structures above the tunnels, eccentricity between the structure axis and tunnel axis, and tunnel depth and diameter. Moreover, a comparative analysis is performed between scenarios with and without structures to elucidate the impact of structure presence on the interaction phenomenon. The research findings provide valuable insights into the intricate behavior of twin tunnels and their interaction with the surrounding soil and structures.

Open Access: Yes

DOI: 10.3390/infrastructures8080124

Egérárpa (Hordeum murinum) toklászának szálkái által kiváltott, mindkét oldali ductus gil. zigomaticae kivezeto nyílásának vérömléses gyulladása vizslában

Egri Borisi

Publication Name: Magyar Allatorvosok Lapja

Publication Date: 2021-07-01

Volume: 143

Issue: 7

Page Range: 448

Description:

No description provided

Open Access: Yes

DOI: DOI not available

Design of Feedback Linearization Controllers for Induction Motor Drives by using Stator Reference Frame Models

Miklós Kuczmann Krisztián Horváth

Publication Name: Proceedings 2021 IEEE 19th International Power Electronics and Motion Control Conference Pemc 2021

Publication Date: 2021-04-25

Volume: Unknown

Issue: Unknown

Page Range: 766-773

Description:

The paper presents feedback linearization based nonlinear controller design for induction machine torque and speed control. Two state-space representation have been studied, stator currents and rotor mechanical speed are measured to control the drive. The pole placement technique is applied to design controller and an integral action is appended to reach accurate steady-state behavior and improve robustness. The presented methods are verified and compared by simulations.

Open Access: Yes

DOI: 10.1109/PEMC48073.2021.9432503

Numbers and system representations in perspective of the Pauli-Jung correspondence

Peter Varlaki László Nádai József Bokor

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: 11-18

Description:

The paper deals with the basic features of the so-called synchronistic stochastic (control) systems on the basis of the extended Kalmanian system and realization theory, using the synchronicity paradigm of Jung and Pauli. It is shown that the introduced additive geometric structure number (characterizing the representation structure of synchronistic stochastic systems) is theoretically equivalent to the fine structure constant (determining e.g. the fine structure of hydrogen spectra) redefined by the authors of this paper. Finally the redefined form of fine structure constant as additive structure number (mediator number or identificator number) and the amplified interpretation of structural patterns of some important objects of cultural history, as well as the hypothetically related natural and geometric structure numbers, are compared. © 2008 IEEE.

Open Access: Yes

DOI: 10.1109/SAMI.2008.4469164

IS THE ENGINEERING STUDENTS' SELF-ASSESSMENT ACCURATE? ANALYSING MIDTERM TESTS IN TERMS OF SELF-ASSESSMENT ACCURACY

Nárcisz Kulcsár

Publication Name: Sefi 2022 50th Annual Conference of the European Society for Engineering Education Proceedings

Publication Date: 2022-01-01

Volume: Unknown

Issue: Unknown

Page Range: 2028-2033

Description:

There is a high drop-out rate in engineering higher education, the reasons can be grouped into four categories: economic explanations, individual pedagogical-psychological, learning-related reasons, socio-cultural influences. This paper discusses the problem of the accuracy of self-assessment among the individual pedagogical and psychological reasons. During the maths midterm tests, students self-assessed on each task, which was compared with the points given by the teacher. More than 80% of students overestimated their actual performance in all midterms, and this overestimation was moderate. Based on the relationship between accuracy scores and test results, students who achieved better results in the midterms gave more accurate self-assessments than those who performed poorly, which confirms the Dunning-Kruger effect in engineering education. Feedback based on their performance may affect the accuracy of self-assessment. Feedback from the midterm caused a significant improvement in self-assessment for students who met mid-term requirements, while there was no such improvement for those who did not. Thus, underperforming students did not benefit enough from the feedback from the first midterm, and the accuracy of their self-assessment did not improve. The fact that there is a significant difference in the accuracy of self-assessment between students who fulfilled mid-term requirements and those who did not. The self-assessments of the former was closer to the teacher's evaluation than those of the latter. This may be problematic because weaker students are less aware of their deficiencies due to their inaccurate self-assessment, and thus they may stop their preparation short of what is necessary, and may not ask for help when needed.

Open Access: Yes

DOI: 10.5821/conference-9788412322262.1450

Environmental impact of increasing car traffic on suburban road section around Győr

Tamás Hardi Farkas Orsolya Hegyiné Bolla Katalin

Publication Name: Teruleti Statisztika

Publication Date: 2021-01-01

Volume: 61

Issue: 4

Page Range: 503-526

Description:

Suburbanisation is one of the most significanturban development trends in Europe andeven the world today. It affects not only largecities and metropolises, but also smallerurban areas. Among its many environmentalimpacts, the most notable is the increase intraffic, which not only leads to morecongestion and accidents, but also to asignificant increase in emissions of pollutantsfrom transport in peri-urban areas. It is truethat the scale of suburbanisation in smalleragglomerations is much smaller than inmetropolitan areas, but the populationmoving out of the cities is making greater useof private transport for commuting. UsingCOPERT (COmputer Programme tocalculate Emissions from Road Transport)software developed in collaboration with theEuropean Environment Agency (EEA), theJoint Research Centre (JRC), Aristotle Universityof Thessaloniki and EMISIA SA, theauthors estimated how emissions from a roadconnecting a group of settlements in the Szigetközregion (the Dunaszeg-Győrújfalusection of road 1401) in the vicinity of Győrchanged between 1995 and 2018. Thesesettlements are among the fastest growingsuburban villages in Hungary, and previousempirical studies have shown that theincrease in the number of vehicles can be linkedto the increase in the number of peoplemoving out of the city. As a result, thecomposition and nature of traffic-based airpollution near the city is changing rapidly

Open Access: Yes

DOI: 10.15196/TS610404

Fuzzy logic in agricultural and environmental research

Attila Piros Károly Tatárvári

Publication Name: Agrokemia Es Talajtan

Publication Date: 2017-06-01

Volume: 66

Issue: 1

Page Range: 201-222

Description:

The papers presented support the summaries of McBratney and Odeh (1997) and Jetter and Kok (2014), who stated during the detailed evaluation of the present state of fuzzy modelling, that fuzzy systems and models may be the important research methods of the future. "Soft" computing methods are gaining ever more ground in the field of soil, agricultural and environmental sciences. The possibility of setting boundaries that are not defined as categories with precisely set, distinctive definitions, and of working with data that are not easily quantifiable and insecure presents a great advantage. Provided a satisfactory mathematical and interdisciplinary research background is available, this is a comparatively simple, fast and cost-effective method, which is more exact than conventional ones, and which supplies results that can also be understood by laymen.

Open Access: Yes

DOI: 10.1556/0088.2017.66.1.12

An Analysis of Personalized Learning Opportunities in 3D VR

Ildiko Horvath

Publication Name: Frontiers in Computer Science

Publication Date: 2021-09-20

Volume: 3

Issue: Unknown

Page Range: Unknown

Description:

Due to its constantly developing technological background, VR and AR technology has been gaining increasing popularity not just in industry or business but in education as well. Research in the field of Cognitive Infocommunications (CogInfoCom) shows that using existing digital technologies, online collaboration and cooperation technologies in 3D VR supports cognitive processes, including the finding, processing, memorization and recalling of information. 3D VR environments are also capable of providing users with a much higher level of comprehension when it comes to sharing and interpreting digital workflows. The paper presents a study carried out with the participation of 90 students. The aim of this study is to investigate how the application of 3D VR platforms as personalized educational environments can also increase VR learning efficiency. Besides considering participants’ test performance, metrics such as results on visual, auditory and reading-based learning tests for information acquisition, as well as responses on Kolb’s learning styles questionnaires are taken into consideration. The participants’ learning styles, information acquisition habits were also observed, allowing us to create and offer a variety of learning pathways based on a variety of content types in the 3D VR environment. The students within the study were divided into two groups: a test group receiving personalized training in the MaxWhere 3D VR classroom, and a control group that studied in a general MaxWhere 3D VR space. This research applies both quantitative and qualitative methods to report findings. The goal was to create adaptive learning environments capable of deriving models of learners and providing personalized learning experiences. We studied the correlation between effectiveness of the tasks and Kolb’s learning styles. The study shows the major importance of choosing the optimal task type regarding each Kolb learning style and personalized learning environment. The MaxWhere 3D spaces show a high potential for personalizing VR education. The non-intrusive guiding capabilities of VR environments and of the educational content integrated in the 3D VR spaces were very successful, because the students were able to score 20 percent higher on the tests after studying in VR than after using traditional educational tools. Students also performed the same tasks with 8-10 percent faster response times.

Open Access: Yes

DOI: 10.3389/fcomp.2021.673826