519 research outputs found
Environmental ethics: values in and duties to the natural world (summarized with commentary by Panagiotis Perros)
No full textSummarized with commentary in Greek by Panagiotis Perros.Environmental ethics stands on a frontier, as radically theoretical as it is applied. Alone, it asks whether there can be nonhuman objects of duty. Animals, plants, endangered species, ecosystems, and even Earth are progressively unfamiliar as objects of duty, and puzzles arise both for theory and practice. Answers to such questions are as urgent as any humans face, and intimately related to the four principal issues on the world agenda: peace, population, development, and environment
Transforming Engineering Education: Motivational dynamics and societal relevance through Challenge-based Learning and authentic, real-world educational experiences.
No full textThis doctoral thesis explores motivation in engineering education through authentic, real-world orientated learning experiences, focusing on Challenge-Based Learning (CBL), Work Industry-related Activities (WIAs), and STEM outreach. Grounded in Self-Determination Theory (SDT), it examines how these practices can support or hinder students’ basic psychological needs for autonomy, competence, and relatedness across educational stages from pre-university to postgraduate levels. Study I reveals that meaningful WIAs that are aligned with student goals enhance motivation and professional identity, while employer-driven tasks may undermine it. Study II’s scoping review identifies a predominance of quantitative research on CBL and student motivation, with limited theory-informed qualitative analysis. Study III analyses student experience data using SDT to show that CBL fosters motivation through autonomy, competence, and relatedness. The same data show that frustration of these psychological needs leads to disengagement. Study IV analyzes Nordic STEM outreach, finding strong support for relatedness and competence but highlighting gaps in fostering autonomy and sustaining long-term interest. The findings emphasize that motivation is enhanced when educational experiences are authentic, relevant, and connected to career aspirations. Motivation, however, is fragile and can be undermined by externally imposed or poorly aligned tasks. Structural tensions arise when pedagogies prioritize market or institutional agendas over student agency, limiting meaningful engagement. This research extends SDT’s application in engineering education beyond classrooms to complex, interdisciplinary contexts. It advocates for “need-liberatory pedagogy” that empowers students as active knowledge co-creators, fostering curiosity, sustainability, and ethical responsibility. Practical implications include designing pedagogies aligned with SDT, promoting inclusive outreach, and embedding psychological metrics in policy and evaluation. The thesis calls for sustained, participatory educational frameworks and outlines future research on autonomy-supportive teaching in CBL settings to deepen understanding of motivational support.Doktorsavhandlingen undersöker motivation inom ingenjörsutbildning genom autentiska, verklighetsnära lärandeupplevelser med fokus på Challenge-Based Learning (CBL), arbetslivsrelaterade aktiviteter (WIAs) och STEM-outreach. Med utgångspunkt i Self-Determination Theory (SDT) analyseras hur dessa metoder stödjer eller hindrar studenters grundläggande psykologiska behov av autonomi, kompetens och samhörighet över utbildningsnivåer från föruniversitär till forskarutbildning. Fyra sammanlänkade studier använder kvalitativa metoder och litteratursyntes. Studie I visar att meningsfulla WIAs som är i linje med studenternas mål ökar motivation och professionell identitet, medan uppgifter styrda av arbetsgivare kan underminera motivationen. Studie II:s översikt identifierar en övervikt av kvantitativ forskning om CBL och studentmotivation, med begränsad teoriinformerad kvalitativ analys. Studie III tillämpar SDT och visar att CBL främjar motivation genom att tillgodose behov av autonomi, kompetens och samhörighet, men att frustration av dessa behov leder till minskat engagemang. Studie IV analyserar nordiska STEM-outreach-aktiviteter och finner starkt stöd för samhörighet och kompetens, men framhäver brister i att främja autonomi och att upprätthålla långsiktigt intresse. Resultaten betonar att motivation stärks när utbildningsupplevelser är autentiska, relevanta och kopplade till karriärambitioner. Samtidigt är motivationen skör och kan försvagas av påtvingade eller dåligt anpassade uppgifter. Strukturella spänningar uppstår när pedagogik prioriterar marknads- eller institutionsagendor framför studenters handlingsutrymme, vilket begränsar kritiskt engagemang. Forskningen utvidgar SDT:s tillämpning inom ingenjörsutbildning bortom klassrum till komplexa, tvärvetenskapliga sammanhang. Den förespråkar en “need-liberatory pedagogy” som ger studenter möjlighet att vara aktiva medskapare av kunskap, och som främjar nyfikenhet, hållbarhet och etiskt ansvarstagande. Praktiska implikationer inkluderar att utforma pedagogik i linje med SDT, främja inkluderande outreach och integrera psykologiska mått i policy och utvärdering. Avhandlingen efterlyser långsiktiga, deltagande utbildningsramar och presenterar framtida forskning om autonomistödjande undervisning i CBL-miljöer för att fördjupa förståelsen av motivationsstöd
R-CAUSTIC: Rippling CAUSTICs underwater Image dataset
No full text<p><strong>Description</strong></p><p>Rippling caustics seem to be the main factor degrading the underwater RGB image quality and affecting the image- based 3D reconstruction process in very shallow waters. These effects are adversely affecting image matching algorithms by throwing off most of them, leading to less accurate matches and causing issues in the Simultaneous Localization and Mapping (SLAM) based navigation of the Remotely Operated Vehicles (ROV) and Autonomous Underwater Vehicles (AUV) on shallow waters. Also, they are the main cause for dissimilarities in the generated textures and orthoimages. In order to fill the gap in the literature regading underwater rippling caustics imagery with real ground truth and reference images, the first real-world underwater caustics benchmark dataset which contains 1465 underwater images is presented. Together with the RGB imagery, the corresponding generated ground truth images are delivered for facilitating the training and testing of machine learning and deep learning methods for image classification. R-CAUSTIC dataset also provides the necessary data to evaluate, at least to some extent, the performance of 3D reconstruction approaches. Data were acquired using a GoPro Hero 4 Black action camera with image dimensions of 4000 x 3000 pixels, focal length of 2.77mm and pixel size of 1.55μm and a tripod. Action cameras are widely used for underwater image acquisition. The dataset was captured in near-shore underwater sites at depths varying from 0.5 to 2m. No artificial light sources were used. Due to the wind, the turbulent surface of the water created dynamic rippling caustics on the seabed. In total 1465 RGB images were collected, separated in 7 different datasets; five of them containing stereo images, one of them tri-stereo images and one consists of multi-stereo imagery acquired in 7 different camera poses.</p><p> </p><p><strong>Publication</strong></p><p>The paper is availbale in Open Access here: https://ieeexplore.ieee.org/document/10172291</p><p><strong>If you use this dataset please cite it as R-CAUSTIC</strong> [Reference].<br>[Reference]: <strong>P. Agrafiotis, K. Karantzalos and A. Georgopoulos, "Seafloor-Invariant Caustics Removal From Underwater Imagery," in </strong><i><strong>IEEE Journal of Oceanic Engineering</strong></i><strong>, vol. 48, no. 4, pp. 1300-1321, Oct. 2023, doi: 10.1109/JOE.2023.3277168.</strong></p><p>BibTeX:</p><p>@ARTICLE{10172291,
author={Agrafiotis, Panagiotis and Karantzalos, Konstantinos and Georgopoulos, Andreas},
journal={IEEE Journal of Oceanic Engineering},
title={Seafloor-Invariant Caustics Removal From Underwater Imagery},
year={2023},
volume={48},
number={4},
pages={1300-1321},
doi={10.1109/JOE.2023.3277168}}</p><p> </p>
R-CAUSTIC: Rippling CAUSTICs underwater Image dataset
No full text<p> </p>
<h3><strong>Version 2 available! Please make sure to download the latest version of the dataset! <br></strong></h3>
<p> </p>
<p><strong>Description</strong></p>
<p>Rippling caustics seem to be the main factor degrading the underwater RGB image quality and affecting the image- based 3D reconstruction process in very shallow waters. These effects are adversely affecting image matching algorithms by throwing off most of them, leading to less accurate matches and causing issues in the Simultaneous Localization and Mapping (SLAM) based navigation of the Remotely Operated Vehicles (ROV) and Autonomous Underwater Vehicles (AUV) on shallow waters. Also, they are the main cause for dissimilarities in the generated textures and orthoimages. In order to fill the gap in the literature regading underwater rippling caustics imagery with real ground truth and reference images, the first real-world underwater caustics benchmark dataset which contains 1465 underwater images is presented. Together with the RGB imagery, the corresponding generated ground truth images are delivered for facilitating the training and testing of machine learning and deep learning methods for image classification. R-CAUSTIC dataset also provides the necessary data to evaluate, at least to some extent, the performance of 3D reconstruction approaches. Data were acquired using a GoPro Hero 4 Black action camera with image dimensions of 4000 x 3000 pixels, focal length of 2.77mm and pixel size of 1.55μm and a tripod. Action cameras are widely used for underwater image acquisition. The dataset was captured in near-shore underwater sites at depths varying from 0.5 to 2m. No artificial light sources were used. Due to the wind, the turbulent surface of the water created dynamic rippling caustics on the seabed. In total 1465 RGB images were collected, separated in 7 different datasets; five of them containing stereo images, one of them tri-stereo images and one consists of multi-stereo imagery acquired in 7 different camera poses.</p>
<p> </p>
<p><strong>Publication</strong></p>
<p>The paper is availbale in Open Access here: https://ieeexplore.ieee.org/document/10172291</p>
<p><strong>If you use this dataset please cite it as R-CAUSTIC</strong> [Reference].<br>[Reference]: <strong>P. Agrafiotis, K. Karantzalos and A. Georgopoulos, "Seafloor-Invariant Caustics Removal From Underwater Imagery," in </strong><em><strong>IEEE Journal of Oceanic Engineering</strong></em><strong>, vol. 48, no. 4, pp. 1300-1321, Oct. 2023, doi: 10.1109/JOE.2023.3277168.</strong></p>
<p>BibTeX:</p>
<p>@ARTICLE{10172291, author={Agrafiotis, Panagiotis and Karantzalos, Konstantinos and Georgopoulos, Andreas}, journal={IEEE Journal of Oceanic Engineering}, title={Seafloor-Invariant Caustics Removal From Underwater Imagery}, year={2023}, volume={48}, number={4}, pages={1300-1321}, doi={10.1109/JOE.2023.3277168}}</p>
<p> </p>
Does genetic diversity on corporate boards lead to improved environmental performance?
No full textElsevier
Journal of International Financial Markets, Institutions and Money
Volume 84, April 2023, 101756
Journal of International Financial Markets, Institutions and Money
Does genetic diversity on corporate boards lead to improved environmental performance?
Author links open overlay panelRenatas Kizys a, Emmanuel C. Mamatzakis b, Panagiotis Tzouvanas c
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https://doi.org/10.1016/j.intfin.2023.101756
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Highlights
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We examine the effect of boards’ genetic diversity (GENETICD) on corporate ESG performance.
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ESG performance and disclosures are higher in more genetically diverse firms.
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The positive GENETICD effect on ESG performance is driven by the environmental pillar.
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Corporate carbon performance significantly improves with increases in GENETICD.
We study the effects of boards’ genetic diversity on corporate environmental performance. Using a multidimensional information set for 3690 US firms during the period from 2005 to 2019, and three different measures of genetic diversity, we find that, pursuant to the diversity theory, which posits that diversity improves the quality of management decisions and business ethics, genetic diversity leads to improved environmental performance. We also find that genetic diversity improves carbon and governance performance, and ESG disclosure. Particularly, a one percentage point increase in boards’ genetic diversity will increase the carbon performance, measured by the inverse of the carbon emissions to total assets ratio, and environmental performance by 3.54% and 5.57%, respectively. Our results remain robust to different model specifications, while also controlling for endogeneity. In terms of policy implications, results suggest that the key to tackling climate challenges is to promote boards’ genetic diversity
The integration of ICT in educational process in IB education-A comparative case study
No full textThis study aims to gain a deep understanding of international baccalaureate (IB) primary years programme (PYP) teachers' perceptions about the use of information and communication technology (ICT) in IB PYP classes. Moreover, it seeks to critically identify the teachers' barriers and needs in order to integrate ICT into teaching and learning. Following a qualitative comparative case study research design, semi-structured interviews were conducted with IB PYP teachers and coordinators in Sweden and Greece. Critical theory, critical pedagogy and critical theory of technology (CTT) were used as the theoretical framework for analysing teachers' perceptions. From a critical point of view, the study reveals that deskilling of teachers, intensification of teachers' work, low school's financial budget, parents' financial burden, commodification and privatisation of IB education are the fundamental factors that negatively intervene in teachers' work in both schools and perpetuate the status quo of teaching and learning processes through integration of ICT.</p
Dataset in support of the Southampton doctoral thesis 'The boatbuilding tradition of the Aegean during the Late Neolithic – Early Bronze Age periods. Typological classification, digital reconstruction and seakeeping assessment'
No full textDataset in support of the Southampton doctoral thesis 'The boatbuilding tradition of the Aegean during the Late Neolithic – Early Bronze Age periods. Typological classification, digital reconstruction and seakeeping assessment' Appendix D - Resistance data and Appendix C - Stability data.
This dataset is focused on two appendices:
Appendix D - Resistance data. D.1 Resistance data produced by the author via MAXSURF Resistance for this thesis.
Appendix C - Stability data
C1. Stability data – STIX and ISO criteria, produced by the author via MAXSURF Stability software for his thesis
This research was funded by Southampton Marine and Maritime Institute (SMMI), Vice-Chancellor's Scholarship, Greek Archaeological Committee UK (GACUK)
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Ideas in trenches: Power and polemics in Panagiotis Kondylis
No full textThe author of the article attempts to examine the positions of Panagiotis Kondylis on the intellectual history and ideas’ polemical nature that is the basic feature for understanding the configuration and development of an idea-theory in history. In order to achieve a full understanding of the specific concept of the intellectual history, first of all we have to analyze the Greek thinker's positions on the power and the way in which the search for power as a basic and irrevocable anthropological condition leads to a polemic condition within the social field. This polemic condition is also evident in the field of ideas, as ideas can be seen as the attempt to form worldviews by the respective subject or group of subjects that have the purpose of self-preservation and expanding their power. Therefore, in this article the emphasis is placed on two different areas of Kondylis' thought, the philosophy of man and then on the description of the ideas’ formulation. 
Mini-review: The role of crop rotation, intercropping, sowing dates and increased crop density towards a sustainable crop and weed management in arable crops
No full textSaabunud / Received 17.05.2020 ; Aktsepteeritud / Accepted 29.05.2020 ; Avaldatud veebis / Published online 30.05.2020 ; Vastutav autor / Corresponding author: Panagiotis Kanatas e-mail: [email protected] extended and in many cases unjustified use of herbicides
has resulted in herbicide resistance development and serious environmental
concerns. Therefore, the need for implementation and wider adoption of
several agronomic and cultural practices is imperative. Ecologically-based
crop management practices like crop rotation, intercropping, delay of
sowing date and increased crop density can be also the basis for effective
and sustainable weed management. In the present review, several cases are
presented and the key points of each method are discussed. Special attention
is given to the fact that the efficacy of each practice is depended on the
specific soil and climatic conditions along with the field history of each site
and crop. Alternative methods of weed management should be further
studied and optimized to include them in both organic and conventional
production systems and ensure the sustainability of agroecosystems
Considerations in the development of a follow-up exploratory quantitative design for student's motivation regarding to work industry-related activities in higher engineering education
No full textThis Work in Progress paper describes considerations relative to the development of a follow-up exploratory quantitative design for examining student motivation in higher engineering education. The intent of the current work is to build on the outcomes of a previous qualitative study exploring the perceptions of students with regard to work industry-related activities included as part of their formal study experience in Swedish university settings. In the follow-up study design discussed in this paper we focus on a quantitative approach to assessing the impact of such experiences on student motivation. Findings from our previous study indicate both that how these different work industry-related activities are conducted and how the different relationships that are present can effect students’ motivation for learning in tertiary engineering education. However, while the earlier study provides understanding of which scenarios can affect student motivation, there is a need to consider relative effect sizes. To address this issue in this paper, we present considerations for a survey design and discuss the determination of population and sample size and study variables for a preliminary survey instrument. We also propose methods with which to establish validity and reliability, as well as presenting a data analysis plan. At this juncture, the development of a follow-up exploratory quantitative study will contribute to a better understanding of students’ perceptions about work industry-related activities which is currently a prime concern in higher engineering education, providing guidelines for a more critical planning of these activities in the future.QC 20210614</p
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