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Irakleion, Greece

Located in Heraklion, the Technological Educational Institute of Crete was founded in 1983 to provide higher technological education to the students of Greece. According to laws Ν.2916/2001, Ν.3549/2007, Ν.3685/2008, Ν.3794/2009, it is a higher educational institute with full University status. Since then, it has expanded considerably and now comprises the following Schools:Applied Technology Health & Welfare ServicesManagement & Economics andAgricultural Technology They are assisted by the departments of general science, foreign languages, and physical education. Students at the TEI follow courses for four years. These courses include lectures and practical work in laboratories. In addition, they complete work placement and dissertations before graduating.Instruction at the TEI includes training in technological subjects and aims to help students to develop as skilled, responsible and qualified members of society. With a permanent teaching staff of 200 and approximately 10,000 students, the TEI is a thriving academic community with an extensive library, residential halls, sports facilities, and a health center. Wikipedia.

Potamitis I.,Technological Educational Institute of Crete

There is a rich literature on automatic species identification of a specific target taxon as regards various vocalizing animals. Research usually is restricted to specific species - in most cases a single one. It is only very recently that the number of monitored species has started to increase for certain habitats involving birds. Automatic acoustic monitoring has not yet been proven to be generic enough to scale to other taxa and habitats than the ones described in the original research. Although attracting much attention, the acoustic monitoring procedure is neither well established yet nor universally adopted as a biodiversity monitoring tool. Recently, the multi-instance multi-label framework on bird vocalizations has been introduced to face the obstacle of simultaneously vocalizing birds of different species. We build on this framework to integrate novel, image-based heterogeneous features designed to capture different aspects of the spectrum. We applied our approach to a taxon-rich habitat that included 78 birds, 8 insect species and 1 amphibian. This dataset constituted the Multi-label Bird Species Classification Challenge-NIPS 2013 where the proposed approach achieved an average accuracy of 91.25% on unseen data. © 2014 Ilyas Potamitis. Source

Vallianatos F.,Technological Educational Institute of Crete

Based on the non-extensive Tsallis entropy, a distribution function of rockfall sizes is suggested. Our result demonstrates the applicability of fundamental principles of non-extensivity of fragmentation into the cumulative distribution of rockfall volumes. Historical data discussed along with an analysis of recent rockfalls data where the observed volumes estimated using the high-accuracy and precision technique of terrestial laser scanner (TLS). The analysis leads to the non-extensive index q = 1.4 in agreement with that presented in other fracture effects in geodynamic or laboratory scale. The work suggests that the non-extensive physics approach can lead to a groundbreaking statistical physics of rockfalls, one of the worldwide natural hazard. © EPLA, 2013. Source

Stratakis E.,Foundation for Research and Technology Hellas | Kymakis E.,Technological Educational Institute of Crete
Materials Today

Plasmonic metallic nanoparticles (NPs) have recently been identified as a breakthrough route for enhancing the efficiency of organic photovoltaic (OPV) devices. The present review highlights the different strategies of incorporating plasmonic NPs for light trapping into either the active or the buffer layer or at various interfaces within the OPV cell architecture. In addition, it summarizes the different enhancement mechanisms that have been proposed and indicates future trends in the development of NPs-based solution processable OPVs. The aim is to distinguish among the different plasmonic effects and to propose potential strategies for performance optimization. © 2013 Elsevier Ltd. Source

Katsaprakakis D.A.,Technological Educational Institute of Crete
Renewable and Sustainable Energy Reviews

A review of the wind parks' environmental and human impacts, based on extended research on the most recent relevant bibliography, is carried out in the present paper. The results of former studies are presented on:the impact on the aesthetic of the landscapethe noise emissionsthe impact on birds and wildlifethe shadow flicker from wind turbinesthe occupation of landthe wind turbines electromagnetic interference. In addition, the results of case studies for selected wind parks installed in the Prefecture of Lasithi in Crete, concerning their visual impacts and their noise emissions are presented. A statistical survey implemented in Crete concerning the public opinion on wind parks and wind energy is also presented. The accomplished tasks indicated:There are no serious impacts caused by the installation or operation of wind parks. The wind parks' impacts may be eliminated with the optimum selection of the installation sites and the appropriate siting of the wind turbines.People in Crete exhibit a strongly positive attitude towards wind energy and wind parks, although they are not willing to pay a higher price for the electricity produced from wind parks. A map with the optimum sites for wind parks installation in the Prefecture of Lasithi was constructed, taking into account all possible restrictions concerning the use of land, the environmental conservation and the impacts on human life. This map can constitute a flexible tool for the optimum site selection for a wind park installation, contributing to the elimination of environmental and human impacts of new wind parks, to the minimization of the required project's licensing time and to the limitation of possible negative public reactions. © 2012 Elsevier Ltd. All rights reserved. Source

Snoke D.,University of Pittsburgh | Kavoulakis G.M.,Technological Educational Institute of Crete
Reports on Progress in Physics

Experiments on Bose-Einstein condensation (BEC) of excitons in the semiconductor Cu2O started over 30 years ago, as one of the first serious attempts at exciton BEC. Early claims were based on spectroscopic signatures and transport data which have since been reinterpreted, in large part because the Auger recombination process for excitons was not well understood. Understanding of the Auger process has advanced, and recent experiments have made significant progress toward exciton BEC. We review the history of experiments on exciton BEC in Cu2O, the Auger recombination process, and the prospects for observing exciton BEC in this system in the near future. © 2014 IOP Publishing Ltd. Source

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