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Search Results: 1 - 10 of 229 matches for " Antonis TSEKOS "
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Juvenile psammomatoid ossifying fibroma. Case report
Hellenic Archives of Oral and Maxillofacial Surgery , 2012,
Abstract: Ossifying fibroma (OS) represents a slow growing, benign neoplasm that belongs to the greater group of fibro-osseous lesions. Based on its histological features, ossifying fibroma is divided into: a) juvenile trabecular OS and b) juvenile psammomatoid OS which affects mainly the paranasal sinuses of children and teenagers aging from 5 to 15 years.A rare case of juvenile psammomatoid ossifying fibroma in a 30 year old male patient located in the left mandibular ramus is presented. Treatment plan included radical surgical excision of the lesion and restoration with autologous osteochondral graft from the 6th rib of the ipsilateral side.
Environment and Philosophy: The Aesthetics and the Natural Environment  [PDF]
Christos A. Tsekos, Thaleia Petsiou
Voice of the Publisher (VP) , 2018, DOI: 10.4236/vp.2018.42002
Abstract: In this study, after initially identifying the field of Aesthetics and the concept of Aesthetically Remarkable (Beautiful), we are going to analyze the aesthetic categories, which constitute a basic element of Aesthetics, taking into consideration that these aesthetic categories are of primary importance regarding the evaluation of the so-called Aesthetically Remarkable. Subsequently, after the interpretation of the term “Environment”, we are going to elaborate on a significant change in contemporary Aesthetics that is related to the Aesthetics of the natural environment (not only of Art as before), the similarities and differences of the Beautiful in Art and the Nature and the role of Environmental Policy in protecting the beauty of our natural habitat.
Two Important Issues in Environmental Ethics: Cloning and Genetic Engineering  [PDF]
Christos A. Tsekos, Marianna N. Bissa
Voice of the Publisher (VP) , 2017, DOI: 10.4236/vp.2017.33004
Abstract: This paper aims to investigate the moral dilemmas that arise in two contemporary issues, those of Cloning and Genetic Engineering. Firstly, we examine some purely technical aspects of these two issues. Secondly, we attempt an analysis of the moral and social dimensions of Cloning and Genetic Engineering. We argue that total rejection of Cloning and Genetic Engineering is neither sound nor documented, and we conclude that there are significant benefits from these two technologies. Additionally, we propose a set of actions that will help modern societies to cope effectively with these challenges.
Ecology, Literature and Environmental Education
Christos A. Tsekos,Evangelos A. Tsekos,Elena I. Christoforidou
International Education Studies , 2012, DOI: 10.5539/ies.v5n3p187
Abstract: The first part of this article refers to the initial attempt to relate Nature to Literature since the age of Hellenistic Alexandria in Egypt. Alexandria was a metropolis of its time with a quite lively character of urban life. Influenced by that character Theocritus was the first to lay the foundations of what is defined as pastoral poetry. In the course of this article and after the significance of contemporary Literature of Ecology is appraised, the results of a research - with regard to the excerpts of both prose and poetry cited in the primary school textbooks in Greece - will be presented. Finally, an educational method is proposed which, we premise, would attribute a more experiential character to Literature for Instruction purposes.
Planning an Environmental Education Project for Kindergarten under the Theme of “the Forest”
Christos A. Tsekos,Elena I. Christoforidou,Evangelos A. Tsekos
Review of European Studies , 2012, DOI: 10.5539/res.v4n2p111
Abstract: The primary aim of the Environmental Education since its initial appearance and throughout the previous decades has been the formation of ecological awareness from early ages. So far, most of the International Conferences have been highlighting the fact that Environmental Education should be introduced since preschool age. The Project Method constitutes a much different educational approach in comparison with the traditional educational methods, which have been implemented throughout the previous years. It is mainly characterized by its student-centered nature, the more active role attributed to the person undergoing education and, among others, the mutual collaboration between the children and the educator so as for the desired outcome to be achieved. The aim of this article is to propose a project for pupils of preschool age under the theme of “The Forest”. All its successive stages (from the introductory to the presentation-announcement stage) are analyzed by means of activities appropriate for children of preschool age and therefore, can easily and readily be realized by them.
A Very Compact Normal Mode Multiloop Helical Antenna with Enhanced Bandwidth  [PDF]
Antonis A. Constantinides
Open Journal of Antennas and Propagation (OJAPr) , 2016, DOI: 10.4236/ojapr.2016.44012
Abstract: The physical size of an antenna becomes an important characteristic when receiving signals in bands with long wavelengths. Size determines two important aspects of antenna performance; impedance and efficiency. For example, the VHF antennas installed on radio sets that intended to receive FM or the latest technology Digital Audio Broadcasting (DAB) radio signals in Bands II, III respectively. Antennas that are installed on mobile platforms (i.e. portable receivers) require a receiver that utilizes a whip telescopic antenna with adjustable length which can operate as a λ/4 monopole antenna. Whereas, non-portable applications like a deck commercial receiver has no built in antenna due to the large size of the radiator needed and so must be connected with an external antenna. This paper presents a new design of a very small size Normal Mode Multiloop Helical Antenna (NMMHA) with superior performance developed for commercial receivers operate in band II, III. The major drawback which has been overcome with this design is the very narrow bandwidth of the Normal Mode Helical Antenna, which originally was optimized to provide the minimum Voltage Standing Wave Ratio VSWR response across Band II (87.5 - 108 MHz). The NMMHA’s size allows it to be a build in block of a deck commercial receiver.
A Very Compact Circular Adaptive Array for New Generation Mobile Commercial Receivers  [PDF]
Antonis A. Constantinides
Open Journal of Antennas and Propagation (OJAPr) , 2017, DOI: 10.4236/ojapr.2017.51001
Abstract: The antenna is a receiver’s component that collects electromagnetic waves from various directions. The rationale behind focusing on the circular array is that its tuning ensures that the receiver processes the desired signal only, while rejecting the unwanted interference. This can only be achieved by a directional external antenna that is large in size and must be steered mechanically in the desired direction. As this arrangement is not practical, smart antennae have been proposed as an alternative. A circular phased array can produce a predicted radiation pattern, whereby it receives maximum energy from the desired direction without the need for mechanical control. Owing to these characteristics, phased arrays exhibit high gain as well as immunity to interference, making them ideal for use in high interference environments. This combination would ensure that it could be incorporated into a commercial deck receiver or installed on vehicles.
Exploring Greek High School Students’ Understanding of Basic Environmental Issues  [PDF]
Christos A. Tsekos, Aikaterini Plakitsi, Dimosthenis G. Theocharopoulos, Demetrios P. Matthopoulos
Open Journal of Applied Sciences (OJAppS) , 2013, DOI: 10.4236/ojapps.2013.31004

The present research studies the knowledge of 221 Ioannina’s city, located in the northwestern region of Greece, high school students on 10 environmental issues. Schoolers’ responses were collected through a closed response questionnaire distributed at three of the city’s Public High Schools. The overall picture appeared to be moderately satisfactory, as high schoolers possess a good knowledge on several environmental issues, while misconceptions on other issues, such as sustainable development, predominate. Taking into account the outcome of the present study we consider that improvements are needed in the existing Environmental Education Program in order to ameliorate their knowledge.

Smoking and infection
Vassiloyanakopoulos Antonis
Tobacco Induced Diseases , 2005, DOI: 10.1186/1617-9625-3-35
Andrew Milner, ed., Tenses of Imagination: Raymond Williams on Science Fiction, Utopia and Dystopia.
Antonis Balasopoulos
European Journal of American Studies , 2011, DOI: 10.4000/ejas.8876
Abstract: Tenses of Imagination, an anthology of Raymond Williams’s writings on science fiction, utopia and dystopia is the seventh volume in the growing Ralahine Utopian Studies Series. It is also, in my view, something of a treasure. For it not only offers an illuminating compendium of Williams’s most important engagements, critical and creative, with SF, utopia and dystopia, but also furnishes us with a heretofore unavailable account of the long-term significance of these frequently spurned genres a...
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