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.

Exponentially fitted symplectic methods for the numerical integration of the Schrödinger equation

Abstract: The computation of the energy eigenvalues of the one-dimensional time-independent Schrodinger equation is considered. Exponentially fitted and trigonometrically fitted symplectic integrators are obtained, by modification of the first and second order Yoshida symplectic methods. Numerical results are obtained for the one-dimensional harmonic oscillator and Morse potential.

Electrical Energy Consumption Analysis in Tertiary Buildings

Abstract: The European Energy Performance of Buildings Directive (EPBD) requires a certain Energy Performance Assessment (EPA) to be conducted for each building, to obtain an Energy Performance Certificate. For this purpose several software tools have been developed enabling the audit and assess of either residential, or tertiary buildings and the calculation of the energy needs and energy consumption in line with EPBD. In practice, however, significant differences between the calculated results and measurements are usually recorded, especially for the electrical consumption, since most of the EPA tools calculate only part of the electric energy consumption in a building. Scope of the paper is to present field measurements for the electrical consumption for different buildings in a University Campus in Greece. The recorded data are analyzed and compared for a specific building with the corresponding obtained by an EPA software. Differences between the two approaches are discussed, while interesting remarks are made concerning the electrical load profiles of University buildings and the rational use of lighting and air-conditioning systems during non-working hours. From the analysis of the results proper electric consumption control strategies of the electrical loads can be proposed, utilizing intelligent control systems.

Service Decomposition and Task Allocation in Distributed Computing Environments

Abstract: Highly competitive and open environments should encompass mechanisms that will assist service providers in accounting for their interests, i.e., offering at a given period of time adequate quality services in a cost efficient manner. Assuming that a user wishes to access a specific service composed of a distinct set of service tasks, which can be served by various candidate service nodes, a problem that should be addressed is the allocation of service tasks to the most appropriate service nodes. This scenario accounts for both the user and the service provider. Specifically, service providers succeed in efficiently managing their resources, while users implicitly exploit in a seamless way the otherwise unutilized power and capabilities of the provider’s network. In general, service task allocation is founded on general and service specific user preferences, service provider’s specific service logic deployment and current system & network load conditions. The pertinent problem is concisely defined, mathematically formulated, optimally solved and evaluated through simulation experiments.

Clusters of Power and Control

Abstract: The corporation environment is a battlefield Key players are competing to gain power and control The paper aims to analyze the power and control function within the firm To do that three basic clusters of people (CEO/Management, Board of Directors, General Shareholders’ Meeting) are recognized and analyzed The analysis takes place using five categories (goal/scope/interest, Strategy, Allies, Foes, Tools, Instruments, Weapons and Preferable Environment) The authors take into account the legal and regulatory framework (corporate law, corporate governance law and codes), the codes of ethics, good practices, principles of corporate governance (OECD, 2004) the market’s needs because they are basic drivers and regulators of how the delegation of power and control takes place and how balance is established The paper shows that power and control is concentrated, legally, at the top of the organizational pyramid, but in reality the only cluster that has the ability (well formulated strategy, tools and allies) to enforce its will on others is the CEO/Management Cluster

Corruption in the Greek Public Sector: An Empirical Research

Abstract: The phenomenon of corruption and the investigation of methods, institutions, and mechanisms for the control of public officials in carrying out their statutory duties and fight of cases of corruption in the relationship between state—citizen, through any socioeconomic and historical frame. It was and remains a key issue for analysis and discussion, especially in modern democratic societies. The aim of this research is initially through a short bibliographical review to present the definition of corruption, especially corruption in the public sector, the types of corruption, the causes which create this phenomenon and of course the consequences on society and the economy and also to analyze the main mechanisms for combating this phenomenon. On the issue of corruption, an empirical research was carried out. The survey was based on questionnaires in order to record the opinions and estimates of participants on issues such as the degree of corruption perception. After the statistical analysis and the findings presentation, some conclusions show that despite the legislation and measures that have been implemented, Greece is still at the top of the world rankings and is among the most corrupt countries. Also, the existing control mechanisms are not effective and there is a lack of ethics and rules mainly in public administration.