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1. Channel-reach morphometric analysis on a headwater stream in a low-mountainous region: a case study from Mecsek Hills

Author

Balázs Víg, Gábor Varga, Richárd Balogh, Dénes Lóczy, László Nagyváradi, and Szabolcs Ákos Fábián

Subjects
hydromorphometry, large woody debris, semi-natural, stream reach, field survey, öreg-patak stream, Geography (General), G1-922
Abstract

Small catchments in mountainous regions affect downstream rivers as a primary source of sediment supply and also generate flash swasfloods, especially during extreme events. These floods have significantly shaped the catchments of small streams in the Mecsek Hills and some rural areas over the past two decades. However, there has been no previous study examining the hydromorphology of headwater catchments in low mountain environments in Hungary. The present study was meant to investigate the fundamental hydrogeomorphological properties of a first-order catchment. A customary and detailed GIS survey of 50-metre sections was aimed at deciphering flash flood vulnerability and geomorphic interrelations within a micro watershed. We found moderate susceptibility to flash floods compared to the whole Mecsek Hills. Stable large woody debris jams were identified during the field survey as major geomorphic channel features functioning as natural barriers which drive channel evolution and reduce flood hazards.

Published
2023
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2. Trends in extreme precipitation events (SW Hungary) based on a high-density monitoring network

Author

Gabriella Schmeller, Gábor Nagy, Noémi Sarkadi, Anikó Cséplő, Ervin Pirkhoffer, István Geresdi, Richárd Balogh, Levente Ronczyk, and Szabolcs Czigány

Subjects
rainfall pattern, extreme precipitation events, monitoring, rainfall frequency, pécs, Geography (General), G1-922
Abstract

Climate change is commonly associated with extreme weather phenomena. Extreme weather patterns may bring prolonged drought periods, more intense runoff and increased severity of floods. Rainfall distribution is extremely erratic both in space and time, particularly in areas of rugged topography and heterogeneous land use. Therefore, locating major rainfall events and predicting their hydrological consequences is challenging. Hence, our study aimed at exploring the spatial and temporal patterns of daily rainfall totals of R ≥ 20 mm, R ≥ 30 mm and R ≥ 40 mm (extreme precipitation events, EPE) in Pécs (SW Hungary) by a hydrometeorological network (PHN) of 10 weather stations and the gridded database of the Hungarian Meteorological Service (OMSZ). Our results revealed that (a) OMSZ datasets indicated increasing frequencies of EPEs for the period of 1971–2020 in Pécs, (b) the OMSZ dataset generally underestimated EPE frequencies, particularly for R ≥ 40 mm EPEs, for the period of 2013 to 2020, and (c) PHN indicated a slight orographic effect, demonstrating spatial differences of EPEs between the two datasets both annually and seasonally for 2013–2020. Our results pointed out the adequacy of interpolated datasets for mesoscale detection of EPE distribution. However, topographically representative monitoring networks provide more detailed microscale data for the hydrological management of urban areas. Data from dense rain-gauge networks may complement interpolated datasets, facilitating complex environmental management actions and precautionary measures, particularly during weather-related calamities.

Published
2022
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3. A DERÁZIÓS VÖLGYEK RECENS FEJLŐDÉSÉT BEFOLYÁSOLÓ TERMÉSZETI ÉS ANTROPOGÉN TÉNYEZŐK: BOSTA, BARANYAI-DOMBSÁG.

Author

GÁBOR, VARGA, ERVIN, PIRKHOFFER, SZABOLCS, CZIGÁNY, RICHÁRD, BALOGH, and ÁKOS, FÁBIÁN SZABOLCS

Subjects
TOPOGRAPHIC maps, LANDFORMS, TIMBERLINE, ARTIFICIAL satellites, SOIL erosion
Abstract

In this study, we investigated a derasion valley located south of Pécs in the South-Baranya Hills, near the village of Bosta. The exciting pattern of soil erosion on the Google Earth Pro satellite image and the asymmetry of its catchment drew attention to it. An interpretation of the contours of the 1:10 000 scale topographic map, followed by field observation, confirmed the somewhat unusual asymmetry of the derasion valley. Its catchment develops on the west-facing slope of an interfluves. As a characteristic hilly landform, the valleys developed intensively during the periglacial climate of the Pleistocene. However, as in this case, agriculture's intensive soil disturbance accelerated their development recently. The development of the studied derasion valley is essentially influenced by the narrow strip of forest that runs unusually transversely across the valley in an E-W direction. We aimed to determine the reasons for the asymmetry of the valley, the terracing of its west-facing slope and the unusual position of the forest strip. In addition to field observations, we analysed various images (i.e. topographic and historical maps and aerial photos) and used geoinformatics to study the derasion valley. Only partial results can be reported as the research is not yet completed. The valley asymmetry is due to the local, sub-sequential character of the derasion valley. We have only indirect assumptions about the terraced appearance of the longer slope. It may be caused by the intersection of the slope with outcrops of the paleosoils of loess sequences. The tree line crossing the derasion valley is the remnant of a hollow way that formed along a dirty road during the 18th and 19th centuries, which was transformed into a loess depression and then into a forested ditch. [ABSTRACT FROM AUTHOR]

Published
2024

5. Impact of Agricultural Land Use Types on Soil Moisture Retention of Loamy Soils

Author

Szabolcs Czigány, Noémi Sarkadi, Dénes Lóczy, Anikó Cséplő, Richárd Balogh, Szabolcs Ákos Fábián, Rok Ciglič, Mateja Ferk, Gábor Pirisi, Marcell Imre, Gábor Nagy, and Ervin Pirkhoffer

Subjects
Renewable Energy, Sustainability and the Environment, Geography, Planning and Development, Building and Construction, Management, Monitoring, Policy and Law, drought, ecosystem services, land use, soil moisture dynamics, water stress
Abstract

Increasingly severe hydrological extremes are predicted for the Pannonian Basin as one of the consequences of climate change. The challenges of extreme droughts require the adaptation of agriculture especially during the intense growth phase of crops. For dryland farming, the selections of the optimal land use type and sustainable agricultural land management are potential adaptation tools for facing the challenges posed by increased aridity. To this end, it is indispensable to understand soil moisture (SM) dynamics under different land use types over drought-affected periods. Within the framework of a Slovenian–Hungarian project, soil moisture, matric potential and rainfall time series have been collected at three pilot sites of different land use types (pasture, orchards and a ploughland) in SW Hungary since September 2018. Experiments were carried out in soils of silt, silt loam and clay loam texture. In the summers (June 1 to August 31) of 2019 and 2022, we identified normal and dry conditions, respectively, with regard to differences in water balance. Our results demonstrated that soil moisture is closely controlled by land use. Marked differences of the moisture regime were revealed among the three land use types based on statistical analyses. Soils under pasture had the most balanced regime, whereas ploughland soils indicated the highest amplitude of moisture dynamics. The orchard, however, showed responses to weather conditions in sharp contrast with the other two sites. Our results are applicable for loamy soils under humid and subhumid temperate climates and for periods of extreme droughts, a condition which is expected to be the norm for the future.

Published
2023
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6. Generation of a flood susceptibility map of evenly weighted conditioning factors for Hungary

Author

Noémi Sarkadi, Ervin Pirkhoffer, Dénes Lóczy, László Balatonyi, István Geresdi, Szabolcs Fábián, Gábor Varga, Richárd Balogh, Alexandra Gradwohl-Valkay, Ákos Halmai, and Szabolcs Czigány

Subjects
Atmospheric Science, Tourism, Leisure and Hospitality Management, Geography, Planning and Development, Geology, Earth-Surface Processes
Abstract

Over the past decades, in the mountainous, hilly and/or urban areas of Hungary several high-intensity storms were followed by severe flash flooding and other hydrologic consequences. The overall aim of this paper was to upgrade the national flash flood susceptibility map of Hungary first published by Czigány et al. (2011). One elementary watershed level (FFSIws) and three settlement level flash flood susceptibility maps (FFSIs) were constructed using 13 environmental factors that influence flash flood generation. FFSI maps were verified by 2,677 documented flash flood events. In total, 5,458 watersheds were delineated. Almost exactly 10% of all delineated watersheds were included into the category of extreme susceptibility. While the number of the mean-based FFSIs demonstrated a normal quasi-Gaussian distribution with very low percentages in the quintile of low and extreme categories, the maximum-based FFSIs overemphasized the proportion of settlements of high and extreme susceptibility. These two categories combined accounted for more than 50% of all settlements. The highest accuracy at 59.02% for class 5 (highest susceptibility) was found for the majority based FFSIs. The current map has been improved compared to the former one in terms of (i) a higher number of conditional factors considered, (ii) higher resolution, (iii) being settlement-based and (iv) a higher number of events used for verification.

Published
2022
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7. Robotics in Education : Proceedings of the RiE 2024 Conference

Author

Richard Balogh, David Obdržálek, Martin Fislake, Richard Balogh, David Obdržálek, and Martin Fislake

Subjects
Control engineering, Robotics, Automation, Technical education, Computational intelligence
Abstract

The 2024th edition of Robotics in Education is based on the 15th Conference on Robotics in Education (RiE2024) mirroring experts'knowledge from all over the world. It includes and summarizes all accepted papers from an interdisciplinary community, which met traditionally at the annual Robotics in Education conference making it a valuable resource for educators, researchers, scientists and engineers. Without losing the focus on educational robotics, the topics have been carefully expanded this year. Therefore, the contributions ranges from theory to practice and from primary schools to university labs while the content covers experience reports from out of school programs to didactic-methodological approaches in teacher training and artificial intelligence to human robotics interaction. Also new robot designs, robot competitions and aspects of maker spaces were considered. The anniversary edition of the conference took place from 10.-12. April 2024 at the University of Koblenz in Germany.

Published
2024

8. Robotics in Education : Proceedings of the RiE 2023 Conference

Author

Richard Balogh, David Obdržálek, Eftychios Christoforou, Richard Balogh, David Obdržálek, and Eftychios Christoforou

Subjects
Control engineering, Robotics, Automation, Technical education, Computational intelligence
Abstract

This book provides an overview of Educational Robotics and includes information that reflects the current status of the field, research activity, experiences, and new tools. It compiles the contributions presented at the 14th International Conference on Robotics in Education (RiE2023). Beyond insights into theoretical aspects, practical projects and syllabus activities exemplify the concepts and provide implementation ideas, which span the whole educational system from kindergarten to the university level. The relevance to science, technology, engineering, and mathematics (STEM) education is highlighted by teaching the topics in a unified framework. The book constitutes a valuable resource for educators, researchers, scientists, and engineers interested in robotics. It covers topics including school teaching curricula, educational methodologies and pedagogy, projects, competitions, hardware, simulations, programming, machine learning, and artificial intelligence in education.

Published
2023

10. Robotics in Education : RiE 2022

Author

Wilfried Lepuschitz, Munir Merdan, Gottfried Koppensteiner, Richard Balogh, David Obdržálek, Wilfried Lepuschitz, Munir Merdan, Gottfried Koppensteiner, Richard Balogh, and David Obdržálek

Subjects
Control engineering, Robotics, Automation, Technical education, Computational intelligence
Abstract

This book comprises the latest achievements in research and development in educational robotics presented at the 13th International Conference on Robotics in Education (RiE), which was carried out as a purely virtual conference from April 27 to 28, 2022. Researchers and educators will find valuable methodologies, experiences, and tools for robotics in education that encourage learning in the fields of science, technology, engineering, arts, and mathematics (STEAM) through the design, creation, and programming of robots addressing real-world societal needs. Social robotics is becoming an important topic in education as well. This also involves various modern technologies ranging from robotics platforms to programming environments and languages. Many papers also prove the positive impact of robotics on the students'interests and competence development. The presented approaches cover the whole educative range from kindergarten to the university level and lifelong learning.

Published
2022

11. Robotics in Education : RiE 2021

Author

Munir Merdan, Wilfried Lepuschitz, Gottfried Koppensteiner, Richard Balogh, David Obdržálek, Munir Merdan, Wilfried Lepuschitz, Gottfried Koppensteiner, Richard Balogh, and David Obdržálek

Subjects
Computational intelligence, Technical education, Robotics
Abstract

This book comprises the latest achievements in research and development in educational robotics presented at the 12th International Conference on Robotics in Education (RiE), which was carried out as a purely virtual conference from April 28 to 30, 2021. Researchers and educators find valuable methodologies and tools for robotics in education that encourage learning in the fields of science, technology, engineering, arts, and mathematics (STEAM) through the design, creation, and programming of tangible artifacts for creating personally meaningful objects and addressing real-world societal needs. This also involves the introduction of technologies ranging from robotics platforms to programming environments and languages. Evaluation results prove the impact of robotics on the students'interests and competence development. The presented approaches cover the whole educative range from kindergarten, primary and secondary school, to the university level and beyond.Chapters “17 and 25” are available open access under a Creative Commons Attribution 4.0 International License via link.springer.com.

Published
2021

12. Robotics in Education : Methodologies and Technologies

Author

Wilfried Lepuschitz, Munir Merdan, Gottfried Koppensteiner, Richard Balogh, David Obdržálek, Wilfried Lepuschitz, Munir Merdan, Gottfried Koppensteiner, Richard Balogh, and David Obdržálek

Subjects
Robotics--Study and teaching--Congresses, Educational technology--Congresses
Abstract

This proceedings book comprises the latest achievements in research and development in educational robotics presented at the 11th International Conference on Robotics in Education (RiE), which was carried out as a purely virtual conference from September 30 to October 2, 2020. Researchers and educators will find valuable methodologies and tools for robotics in education that encourage learning in the fields of science, technology, engineering, arts and mathematics (STEAM) through the design, creation and programming of tangible artifacts for creating personally meaningful objects and addressing real-world societal needs. This also involves the introduction of technologies ranging from robotics platforms to programming environments and languages. Evaluation results prove the impact of robotics on the students'interests and competence development. The presented approaches cover the whole educative range from elementary school to university in both formal as well as informal settings.

Published
2021

13. Robotics in Education : Current Research and Innovations

Author

Munir Merdan, Wilfried Lepuschitz, Gottfried Koppensteiner, Richard Balogh, David Obdržálek, Munir Merdan, Wilfried Lepuschitz, Gottfried Koppensteiner, Richard Balogh, and David Obdržálek

Subjects
Robotics--Study and teaching--Congresses, Educational technology--Congresses
Abstract

This proceedings book gathers the latest achievements and trends in research and development in educational robotics from the 10th International Conference on Robotics in Education (RiE), held in Vienna, Austria, on April 10–12, 2019. It offers valuable methodologies and tools for robotics in education that encourage learning in the fields of science, technology, engineering, arts and mathematics (STEAM) through the design, creation and programming of tangible artifacts for creating personally meaningful objects and addressing real-world societal needs. It also discusses the introduction of technologies ranging from robotics platforms to programming environments and languages and presents extensive evaluations that highlight the impact of robotics on students'interests and competence development. The approaches included cover the entire educative range, from the elementary school to the university level in both formal and informal settings.

Published
2020

14. Robotics in Education : Methods and Applications for Teaching and Learning

Author

Wilfried Lepuschitz, Munir Merdan, Gottfried Koppensteiner, Richard Balogh, David Obdržálek, Wilfried Lepuschitz, Munir Merdan, Gottfried Koppensteiner, Richard Balogh, and David Obdržálek

Subjects
Educational technology--Congresses, Robotics--Study and teaching--Congresses
Abstract

This proceedings volume comprises the latest achievements in research and development in educational robotics presented at the 9th International Conference on Robotics in Education (RiE) held in Qawra, St. Paul's Bay, Malta, during April 18-20, 2018. Researchers and educators will find valuable methodologies and tools for robotics in education that encourage learning in the fields of science, technology, engineering, arts and mathematics (STEAM) through the design, creation and programming of tangible artifacts for creating personally meaningful objects and addressing real-world societal needs. This also involves the introduction of technologies ranging from robotics platforms to programming environments and languages. Extensive evaluation results are presented that highlight the impact of robotics on the students'interests and competence development. The presented approaches cover the whole educative range from elementary school to the university level in both formal as well as informal settings.

Published
2019

15. Robotics in Education : Latest Results and Developments

Author

Wilfried Lepuschitz, Munir Merdan, Gottfried Koppensteiner, Richard Balogh, David Obdržálek, Wilfried Lepuschitz, Munir Merdan, Gottfried Koppensteiner, Richard Balogh, and David Obdržálek

Subjects
Artificial intelligence--Congresses, Robotics--Study and teaching--Congresses, Educational technology--Congresses
Abstract

This proceedings volume highlights the latest achievements in research and development in educational robotics, which were presented at the 8th International Conference on Robotics in Education (RiE 2017) in Sofia, Bulgaria, from April 26 to 28, 2017. The content will appeal to both researchers and educators interested in methodologies for teaching robotics that confront learners with science, technology, engineering, arts and mathematics (STEAM) through the design, creation and programming of tangible artifacts, giving them the chance to create personally meaningful objects and address real-world societal needs. This also involves the introduction of technologies ranging from robotics controllers to virtual environments. In addition, the book presents evaluation results regarding the impact of robotics on students'interests and competence development. The approaches discussed cover the whole educational range, from elementary school to the university level, in both formal as well as informal settings.

Published
2018

16. Robotics in Education : Research and Practices for Robotics in STEM Education

Author

Munir Merdan, Wilfried Lepuschitz, Gottfried Koppensteiner, Richard Balogh, Munir Merdan, Wilfried Lepuschitz, Gottfried Koppensteiner, and Richard Balogh

Subjects
Robotics--Study and teaching--Congresses, Educational technology--Congresses
Abstract

This proceedings volume showcases the latest achievements in research and development in Educational Robotics presented at the 7th International Conference on Robotics in Education (RiE) held in Vienna, Austria, during April 14-15, 2016. The book offers a range of methodologies for teaching robotics and presents various educational robotics curricula. It includes dedicated chapters for the design and analysis of learning environments as well as evaluation means for measuring the impact of robotics on the students'learning success. Moreover, the book presents interesting programming approaches as well as new applications, the latest tools, systems and components for using robotics. The presented applications cover the whole educative range, from elementary school to high school, college, university and beyond, for continuing education and possibly outreach and workforce development. The book provides a framework involving two complementary kinds of contributions: on the one hand ontechnical aspects and on the other hand on matters of didactic.

Published
2016

17. Feedback Control of a Nonlinear Electrostatic Force Transducer

Author

Ivan Ryger, Richard Balogh, Stefan Chamraz, Alexandra Artusio-Glimpse, Michelle Stephens, Paul A. Williams, and John Lehman

Subjects
capacitive transducer, mechanical resonance, nonlinear control, Chemical technology, TP1-1185
Abstract

We document a feedback controller design for a nonlinear electrostatic transducer that exhibits a strong unloaded resonance. Challenging features of this type of transducer include the presence of multiple fixed points (some of which are unstable), nonlinear force-to-deflection transfer, effective spring-constant softening due to electrostatic loading and associated resonance frequency shift. Furthermore, due to the utilization of lowpass filters in the electronic readout circuitry, a significant amount of transport delay is introduced in the feedback loop. To stabilize this electro-mechanical system, we employ an active disturbance-rejecting controller with nonlinear force mapping and delay synchronization. As demonstrated by numerical simulations, the combination of these three control techniques stabilizes the system over a wide range of electrode deflections. The proposed controller shows good setpoint tracking and disturbance rejection, and improved settling time, compared to the sensor alone.

Published
2020
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18. A Survey of Robotic Competitions

Author

Richard Balogh

Subjects
Electronics, TK7800-8360, Electronic computers. Computer science, QA75.5-76.95
Abstract

A survey of robotic competitions all over the world, their short history and present state is given. Contests are classified according to their difficulty and conditions. Typical competition categories, also with interesting robot constructions are described. Sense, advantages and disadvantages of contests are discussed, especially concerning educational purposes. At the same time, our experiences with organising the contest Istrobot are presented.

Published
2008

19. I am a Robot – Competitor

Author

Richard Balogh

Subjects
Electronics, TK7800-8360, Electronic computers. Computer science, QA75.5-76.95
Abstract

A survey of robotic competitions all over the world, their short history and present state is given. Contests are classified according to their difficulty and conditions. Typical competition categories, also with interesting robot constructions are described. Sense, advantages and disadvantages of contests are discussed, especially concerning educational purposes. At the same time, our experiences with organising the contest Istrobot are presented.

Published
2005
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