George Alexandrakis

ORCID: 0000-0003-3690-3159
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About
Contact & Profiles
Research Areas
  • Maritime and Coastal Archaeology
  • Coastal and Marine Dynamics
  • Marine and environmental studies
  • Conservation Techniques and Studies
  • Coastal and Marine Management
  • Ocular Infections and Treatments
  • Intraocular Surgery and Lenses
  • Ocular Surface and Contact Lens
  • Archaeological Research and Protection
  • Ocular Diseases and Behçet’s Syndrome
  • Meteorological Phenomena and Simulations
  • Aeolian processes and effects
  • Tropical and Extratropical Cyclones Research
  • Diverse Aspects of Tourism Research
  • Cruise Tourism Development and Management
  • Building materials and conservation
  • Ophthalmology and Visual Impairment Studies
  • earthquake and tectonic studies
  • Ophthalmology and Eye Disorders
  • Antifungal resistance and susceptibility
  • Retinal and Macular Surgery
  • Ocular Oncology and Treatments
  • 3D Surveying and Cultural Heritage
  • Medical Imaging Techniques and Applications
  • Optical Imaging and Spectroscopy Techniques

Foundation for Research and Technology Hellas
2014-2025

Istituto Nazionale di Geofisica e Vulcanologia
2019-2021

National and Kapodistrian University of Athens
2006-2015

FORTH Institute of Applied and Computational Mathematics
2011-2014

University of Miami
2000-2009

University of California, Los Angeles
2005

Medical University of South Carolina
2001-2002

University of Florida
2001

University College London
2001

Moorfields Eye Hospital
2001

The feasibility and limits in performing tomographic bioluminescence imaging with a combined optical-PET (OPET) system were explored by simulating its image formation process. A micro-MRI based virtual mouse phantom was assigned appropriate tissue optical properties to each of segmented internal organs at wavelengths spanning the emission spectrum firefly luciferase 37 °C. TOAST finite-element code employed simulate diffuse transport photons emitted from sources mouse. OPET measurements...

10.1088/0031-9155/50/17/021 article EN Physics in Medicine and Biology 2005-08-24

This study evaluates the accuracy of bathymetric maps generated from multispectral satellite datasets acquired different sensors, namely Worldview 2, PlanetScope, and Sentinel in bay Elounda Crete. Image pre-processing steps were implemented before use three empirical methods for estimating bathymetry. A dedicated correction median filter have been applied to minimize noise sun glint sea waves. Due spectral complexity selected area, statistical correlation with numbers bands was applied. The...

10.3390/rs14030772 article EN cc-by Remote Sensing 2022-02-07

Responsible tourism practices promote the idea that responsibility refers to both visitors and local communities, ensuring protection conservation of natural environment cultural heritage contributing a better quality life. The role “sustainability” in tourist development strategy is protect reveal what already exists (“reuse, recycle, renovate”) rather than consume. In these terms, routes can serve as valuable assets attract generate economic activity, while protecting environmental...

10.3390/land12081590 article EN cc-by Land 2023-08-11

Erosion is a major threat for coasts worldwide, beaches in particular, which constitute one of the most valuable coastal landforms. Vulnerability assessments related to beach erosion may contribute planning measures counteract by identifying, quantifying and ranking vulnerability. Herein, we present new index, Beach Index (BVI), combines simplicity calculations, easily obtainable data low processing capacity. This approach provides results not only different beaches, but also sectors same...

10.1038/srep06078 article EN cc-by-nc-sa Scientific Reports 2014-08-15

The demand for a new concept of heritage, in which monuments and landscapes are considered active factors creating sense history, is esteemed not only from scientific academic perspective, but as well part more sensitive efficient strategy to link cultural heritage tourism, by bringing an integrative perspective the forefront. Implementing such strategies strictly correlated with ability support decision-makers increase people’s awareness towards comprehensive approach preservation. In...

10.3390/heritage2010019 article EN cc-by Heritage 2019-01-23

Inevitable discrepancies between the mouse tissue optical properties assumed by an experimenter and actual physiological values may affect tomographic localization of bioluminescent sources. In a previous work, simplifying assumption optically homogeneous tissues led to inaccurate deep Improved results be obtained if anatomical map is provided high-resolution imaging modality are assigned segmented tissues. this feasibility approach was explored simulating effect different magnitude property...

10.1088/0031-9155/51/8/006 article EN Physics in Medicine and Biology 2006-04-03

The choice of holiday destinations is highly depended on climate considerations. Nowadays, since the effects crisis are being increasingly felt, need for accurate weather and services hotels crucial. Such a service could be beneficial both future planning tourists’ activities hotel managers as it help in decision making about expansion touristic season, due to prediction higher temperatures longer time span, thus causing increased revenue companies local sector. aim this work calculate...

10.3390/atmos13060878 article EN cc-by Atmosphere 2022-05-28

The study assesses coastal evolution and the vulnerability of archaeological sites in Southeastern Crete. Shoreline dynamics since 1940s were examined through interpretation high-resolution aerial photographs satellite images. A set climatic variables, as well data on geomorphological geological factors obtained from fieldwork, images interpretation, archives, open-source datasets, analysed. influence these variables was evaluated using regression analysis, correlating their spatial...

10.3390/land14040892 article EN cc-by Land 2025-04-17

This extended abstract addresses the issue of marine plastic pollution in Pachia Ammos area, Crete, and explores potential for developing an early warning system specifically litter. The research area is located East Greece, spans from to Tholos Kavousi, focusing on Voulisma beaches. methodology integrates field sampling numerical modeling assess debris distribution movement patterns. Data collection involved onshore offshore sampling, physical documentation, classification waste....

10.5194/egusphere-egu25-15976 preprint EN 2025-03-15

<h3>AIMS/BACKGROUND</h3> The purpose of this study was apply the polymerase chain reaction (PCR) to develop a sensitive, specific, and rapid test diagnose<i> Fusarium</i> keratitis.<i>Fusarium</i> is most common cause fungal corneal infection in some parts world. It often difficult establish that keratitis due infection. <h3>METHODS</h3> <i>Fusarium solani</i>keratitis induced three eyes rabbits by injection suspension fungus into anterior stroma. In one rabbit contralateral eye served as...

10.1136/bjo.82.3.306 article EN British Journal of Ophthalmology 1998-03-01

Cultural Heritage (CH) (In the context of this paper, we consider cultural heritage built tangible heritage, such as buildings or monuments.) is an important source identity for humankind and needs to be conserved future generations. Climate change (CC) will morph environmental landscape, thus leading climate stress imposed on CH. Experts from different domains, including, but not limited to, material scientists, conservators managers collaborate find out how CC affects CH potentially...

10.3390/heritage1020026 article EN cc-by Heritage 2018-11-22

Documentation and conservation of underwater cultural heritage (UCH) are crucial to preserving humankind’s history traditions, safeguarding tangible testimonies past human life while ensuring its accessibility future generations. The TECTONIC (Technological Consortium TO develop sustainability Cultural Heritage) project is promoting an intersectoral collaboration between academic non-academic professionals (i.e., archaeologists, conservators, geologists, engineers, etc.) working on different...

10.3390/su12125000 article EN Sustainability 2020-06-18

The present investigation examines the characteristics of a high energy storm event, that took place on November 9-11, 2007 in NE Ionian Sea (eastern Mediterranean), and its impact upon barrier beach separates Lefkada lagoon from open Sea. event was caused by NW winds with speeds exceeding 20 m/s (40 knots), which have an annual frequency occurrence less than 0.015%. This produced waves &gt;5 m significant offshore height 9.5 s period; these developed 10th during rapid rise barometric...

10.12681/mms.948 article EN Mediterranean Marine Science 2015-09-14
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