The interplay of architecture and acoustics is remarkable in ancient Greek and Roman theaters. Frequently they are nowadays lively performance spaces and the knowledge of the sound field inside them is still an issue of relevant importance. Even if the transition from Greek to Roman theaters can be described with a great architectural detail, a comprehensive and objective approach to the two ty...

This paper investigates the use of chat by Greek students. An appropriate questionnaire was developed. Among others, the questions attempted to identify the users’ preferences regarding chat rooms and discussion subjects, their expectations for advanced chat features, as well as the relation between chat and normal life. The questionnaire was

Two Greek female patients with Aicardi's syndrome are presented. The clinical picture, electroencephalogram, computer axial tomography scan, and the ophthalmological findings in these patients are described. The ocular features are emphasised because they can establish the diagnosis of this rare syndrome.

This paper describes work towards the harmonization of the Greek Dependency Treebank with the Universal Dependencies v2 standard, and the extension of the treebank with enhanced dependencies. Experiments with the latest version of the UD_Greek resource have led to 88.94/87.66 LAS on gold/automatic POS, morphological features and lemmas.

We introduce a new method to construct approximation algorithms for combinatorial optimization problems using semidefinite programming. It consists of expressing each combinatorial object in the original problem as a constellation of vectors in the semidefinite program. When we apply this technique to systems of linear equations mod p with at most two variables in each equation, we can show tha...

The previously unknown larva of Rhyacophila balcanica Radovanovic 1953 is described. The diagnostic features of the species are listed and illustrated and some information on its ecology and distribution is included. In addition, diagnostic characters for larvae of the known Greek Rhyacophila species are provided.

since the true understanding of each dialect depends on an understanding of language changes, this paper discusses the historical course of language in egypt and the linguistic features of the egyptian dialect based on historical linguistics. what this paper takes into consideration is the presence of arabic in egypt before the advent of islam and discusses the extent of its impression from the...