Technological Educational Institute of Western Macedonia

About: Technological Educational Institute of Western Macedonia is a based out in . It is known for research contribution in the topics: Catalysis & Symplectic geometry. The organization has 291 authors who have published 522 publications receiving 7682 citations. The organization is also known as: TEI of West Macedonia & TEI of Western Macedonia.

Automatic Generation of Massively Parallel Hardware from Control-Intensive Sequential Programs

Abstract: High-level synthesis has been envisaged as a suitable methodology to design and deliver on time, at least large parts of today’s complex IC systems. This paper describes a unified and integrated HLS framework, to automatically produce custom and massively-parallel hardware, including its memory and system interfaces from high-level sequential program code. Using compiler-generators and logic programming techniques, provably-correct hardware compilation flow is achieved. The utilized hardware optimization inference engine is driven by a set of resource constraints, which limit to a certain boundary the number of available hardware operators to function in parallel during each control step. This optimization reduces drastically the number of different control steps (states) of the implemented application. The hardware compilation runs are completed in orders-of-magnitude less time than that which would be needed by even very experienced HDL designers to implement the same applications in RTL code. Implementation results from synthesis of a number of control-dominated, linear and repetitive, applications including a MPEG video compression engine with up to a few hundred states, are presented. In all cases the HLS framework delivers quickly provably-correct, implementable RTL code and the optimized schedule is reduced at up to 30% in comparison with the initial schedule.

Atlas of airborne particles from Kozani area, Northern Greece

Abstract: Κατά την διάρκeια eνός ημeρολογιακού έτους (Μάρτιος 2004-Φeβρουάριος 2004), αρκeτά φίλτρα συλλογής αιωρούμeνων σωματιδίων λήφθηκαν από eπτά θέσeις δeιγματοληψίας στην γeωλογική λeκάνη Αμυνταίου-Πτολeμαΐδας-Κοζάνης. Πραγματοποιήθηκe ανάλυση των αιωρούμeνων σωματιδίων μe χρήση του «Πeριβαλλοντικού» Ηλeκτρονικού Μικροσκοπίου (ESEM). Ταυτόχρονα, προσδιορίστηκe η χημική σύσταση των σωματιδίων μe χρήση του συστήματος διασποράς eνέργeιας (EDX). Τα σωματίδια ταξινομήθηκαν σe διάφορeς κατηγορίeς μe βάση την προέλeυση τους (ανθρωπογeνή, γeωγeνή, βιογeνή), το μέγeθος τους (μέση διάμeτρος 5-20 μm), τη μορφολογία τους (γωνιώδη, ασύμμeτρα, σφαιρικά, eπιμήκη) και τη σύσταση τους (αργιλοπυριτικά, ανθρακικά, οξeίδια, θeιικά, μeταλλικά, ανθρακούχα). Δόθηκe έμφαση σe σωματίδια ιπτάμeνης τέφρας που προέρχeται από την καύση των λιγνιτών στους θeρμοηλeκτρικούς σταθμούς της πeριοχής. Δημιουργήθηκe μία βάση δeδομένων μe χαρακτηριστικά αιωρούμeνα σωματίδια (όπως αυτά προσδιορίστηκαν στην παρούσα μeλέτη), μe σκοπό να βοηθήσeι παρόμοιeς μeλλοντικές έρeυνeς στην πeριοχή

Pollution sources in water of young reservoirs - case of ilarion hydroelectric dam, greece

Abstract: Evaluation of spatial/ temporal water quality data at reservoirs has shown differences after the dam construction as well as longterm changes of water chemistry. One of the most recent reservoirs created in Europe is Ilarion Reservoir in Western Macedonia Greece (2012). In this work, the water physicochemical characteristics of this young reservoir and the spatiotemporal water quality variation of the feeding river and its main tributaries have been studied, and statistically interpreted. The aqueous system of the young reservoir after two years of formation does not seem to have reached its stabilization age but a stabilization tendency appears at some quality parameters. The dissolution of plant residues covering the flooded areas and the water volume changes affected the water quality, while excesses of legislation s limits for some parameters have been observed. The most affected parameters, remaining at high levels are TKN, ammonia, nitrite nitrogen and color. The feed water quality is generally within the legislation s limits with the exception of nitrite and ammonium nitrogen parameters which exceed the maximum permissible legislation s limits and are the main pollution sources of the young reservoir. Monitoring these parameters is necessary to determine if the observed excess values could lead to eutrophic conditions and toxic habitat for fishes. The statistical analysis indicated some significant parameters responsible for large variations in water quality and allowed the identification and apportionment of pollution sources as an aspect of the temporal/spatial variations in water quality, indispensable for effective water quality management.

Greek Banks Abroad: A Historic Examination

Abstract: Greek banks have a long history of presence abroad; it dates from the beginning of the twentieth century due mainly to the presence of the National Bank of Greece in London related to Greek merchant navy and the Greek shipowners. The important movement of Greek banks abroad began at the decade of the 1960s; it is related mainly to the Greek immigration. Greek banks followed Greek immigrants to the host countries. From the decade of the 1990s, the presence abroad has changed. Greek banks are settled in the Balkan countries because they followed Greek companies to these countries and because they focused to take a part of the local banking market. Banking systems in these countries were created from the beginning presenting big opportunities for the foreign banks. The current economic and financial crisis in Greece had as consequence the reduction of the banking network abroad. The banking presence abroad has not been homogenous neither by the banks implemented abroad nor by the host countries. The form of presence was influenced by the host country’s legislation, the parent bank’s policy, and bank’s economic potential.

Exploring the Potential of Metaheuristics-Based Clustering in Load Profiling Applications

Abstract: The clustering tool is ideal for scientific and engineering problems where no information about the data structure is available. Usually, in load profiling applications no sufficient information is a priori given for the consumers' classes, their consumption patterns and other attributes that will aid on building a descriptive model for the consumption trends. Many clustering algorithms of different type have been proposed. However, no attention has been placed so far in the utilization of metaheuristics for building robust clustering tools. The scope of this study is to develop a hybrid algorithm that combines partitional clustering and Particle Swarm Optimization (PSO). Simulation results indicate the superiority of the proposed algorithm over conventional clustering approaches.