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Institution

University of the Aegean

EducationMytilene, Greece
About: University of the Aegean is a education organization based out in Mytilene, Greece. It is known for research contribution in the topics: Population & Tourism. The organization has 2818 authors who have published 8100 publications receiving 179275 citations. The organization is also known as: UAEG.


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Journal ArticleDOI
TL;DR: It can be concluded that despite the fact that there are various barriers and challenges in front of the adoption of virtual reality on educational practices, VR/AR applications provide an effective tool to enhance learning and memory, as they provide immersed multimodal environments enriched by multiple sensory features.
Abstract: The purpose of this review article is to present state-of-the-art approaches and examples of virtual reality/augmented reality (VR/AR) systems, applications and experiences which improve student learning and the generalization of skills to the real world. Thus, we provide a brief, representative and non-exhaustive review of the current research studies, in order to examine the effects, as well as the impact of VR/AR technologies on K-12, higher and tertiary education students’ twenty-first century skills and their overall learning. According to the literature, there are promising results indicating that VR/AR environments improve learning outcomes and present numerous advantages of investing time and financial resources in K-12, higher and tertiary educational settings. Technological tools such as VR/AR improve digital-age literacy, creative thinking, communication, collaboration and problem solving ability, which constitute the so-called twenty-first century skills, necessary to transform information rather than just receive it. VR/AR enhances traditional curricula in order to enable diverse learning needs of students. Research and development relative to VR/AR technology is focused on a whole ecosystem around smart phones, including applications and educational content, games and social networks, creating immersive three-dimensional spatial experiences addressing new ways of human–computer interaction. Raising the level of engagement, promoting self-learning, enabling multi-sensory learning, enhancing spatial ability, confidence and enjoyment, promoting student-centered technology, combination of virtual and real objects in a real setting and decreasing cognitive load are some of the pedagogical advantages discussed. Additionally, implications of a growing VR/AR industry investment in educational sector are provided. It can be concluded that despite the fact that there are various barriers and challenges in front of the adoption of virtual reality on educational practices, VR/AR applications provide an effective tool to enhance learning and memory, as they provide immersed multimodal environments enriched by multiple sensory features.

103 citations

Journal ArticleDOI
TL;DR: In this article, the efficiency of some novel glycerol-based natural eutectic mixtures to extract polyphenolic compounds was evaluated under specified ultrasonication conditions and the results indicated that extracts with high polyphenol concentration may also possess higher antiradical activity and reducing power.
Abstract: Several abundant agri-food wastes, including lemon peels, olive leaves, onion solid wastes, red grape pomace, spent filter coffee and wheat bran, were used to test the efficiency of some novel glycerol-based natural eutectic mixtures to extract polyphenolic compounds. Extractions were performed under specified ultrasonication conditions and the eutectic mixtures, tested as 90 % (v/v) aqueous solutions, were glycerol:choline chloride, glycerol:sodium acetate and glycerol:sodium–potassium tartrate:water, with corresponding molar ratios of 3:1, 3:1 and 5:1:4. The latter two mixtures are reported for the first time. Water and 60 % (v/v) aqueous ethanol were also used as control solvents. The results obtained evidenced that glycerol:choline chloride exhibited high efficiency, which was comparable or even surpassed that of aqueous ethanol, but in some instances the same was observed for glycerol:sodium acetate too. In general, glycerol:sodium–potassium tartrate:water displayed lower efficiency in extracting polyphenols. The data also suggested that extracts with high polyphenol concentration may also possess higher antiradical activity and reducing power. The findings of this study were interpreted on the ground of assumptions regarding the polarity of the eutectic mixtures tested.

102 citations

Journal ArticleDOI
TL;DR: In this article, the efficiency of 12 ecological indices expressing species diversity, abundance, evenness, dominance and biomass of phytoplankton to describe trophic levels in coastal marine ecosystems in the Eastern Mediterranean was assessed.

102 citations

Book ChapterDOI
22 Aug 2005
TL;DR: This work proposes adaptations of spatial access methods and search algorithms for probabilistic versions of range queries and nearest neighbors and conducts an extensive experimental study, which evaluates the effectiveness of proposed solutions.
Abstract: We study the problem of answering spatial queries in databases where objects exist with some uncertainty and they are associated with an existential probability. The goal of a thresholding probabilistic spatial query is to retrieve the objects that qualify the spatial predicates with probability that exceeds a threshold. Accordingly, a ranking probabilistic spatial query selects the objects with the highest probabilities to qualify the spatial predicates. We propose adaptations of spatial access methods and search algorithms for probabilistic versions of range queries and nearest neighbors and conduct an extensive experimental study, which evaluates the effectiveness of proposed solutions.

102 citations

Journal ArticleDOI
TL;DR: In this article, the authors argue that there are limitations in the various ways social and cultural capital are operationalised quantitatively in empirical research as often they do not capture adequately the full extent of the social dynamics that they draw attention to.
Abstract: This article aims to contribute to the debate of how theoretical concepts can be operationalised when researching educational issues. Specifically, it examines the application of the concepts of social and cultural capital in empirical research seeking to provide explanations for educational processes relating to post‐secondary school choice making in contemporary Cyprus. The article argues that there are limitations in the various ways social and cultural capital are operationalised quantitatively in empirical research as often they do not capture adequately the full extent of the social dynamics that they draw attention to. Instead the use of qualitative methods where the researcher probes for details into the practices, habits, beliefs, and attitudes of individuals are seen as having powerful exploratory and explanatory potentials to address these limitations.

102 citations


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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
202345
202292
2021479
2020493
2019543
2018447