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: Symplectic geometry & Numerical integration. 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.

Numerical solution of the two-dimensional time independent Schrödinger equation with exponential-fitting methods

Abstract: The solution of the two-dimensional time-independent Schrodinger equation is considered by partial discretization. We apply exponential-fitting methods for the solution of the discretized problem which is an ordinary differential equation problem. All methods are applied for the computation of the eigenvalues of the two-dimensional harmonic oscillator and the two-dimensional Henon-Heils potential. The results are compared with the results produced by full discretization.

The Banking Network as a Transmission Channel of Migrant Remittances: The Case of Greek and Italian Banks in Albania

Abstract: The paper examines the role of the banking network of foreign banks, namely Greek and Italian banks, on the transfer of remittances of Albanian immigrants. Remittances through the official network that is formed mainly by the banking network, grew much higher in comparison to non-official network during the period 1994–2006. The paper finds that the growth of the amount of remittances conveyed through the official network as part of the total amount of remittances is related to the evolution of branches of Greek and Italian banks in Albania.

Enhancing storage integration in buildings with photovoltaics (PV-ESTIA project)

Abstract: European Union's energy targets for 2030 include the transformation of the building stock to nearly zero energy buildings (NZEBs). NZEBs are characterized by reduced net-energy demand, since most of their energy needs are met by on-site renewable energy sources, especially photovoltaics (PVs). Consequently, in the following years, a considerable amount of intermittent solar generators will be connected in the electrical grid posing new challenges concerning the secure and reliable grid operation. To effectively address these challenges, the integration of energy storage systems (ESSs) in NZEBs is considered as the most promising solution. Towards this objective, the PV-ESTIA project aims to develop an innovative management scheme for hybrid PV and storage systems in order to promote the use of ESSs in the building environment. In the framework of the project, the proposed management scheme will be tested and validated under real-field conditions at pilot installations placed in the Balkan Mediterranean (Balkan-MED) region. Additionally, the distinct features and functionalities of the proposed scheme will be further evaluated during the project through the development of optimization tools. This paper presents briefly the main activities and the expected outcomes of the PV-ESTIA project, focusing on the conceptual analysis of the foreseen management scheme for hybrid PV and storage systems. Additionally, potential barriers related with the integration of ESSs in buildings at the Balkan-MED region are identified and discussed. Finally, a detailed analysis of the pilot installations which will be developed in the framework of the PV-ESTIA project is presented.

Greenhouse gas emissions from two hydroelectric reservoirs in Mediterranean region

Abstract: Water reservoirs are used for many purposes, such as water supply, irrigation, flood mitigation, and hydroelectric energy generation. Although hydroelectric energy is considered “green,” many studies show that the construction of a reservoir enhances greenhouse gas (GHG) emissions at the transformed area. These emissions, mainly of CO2, CH4, and N2O gases, depend on the age of the reservoir, landscape and soil composition, fauna and flora remnants of the impounded area, climatic conditions, and basin runoffs. Consequently, GHG emissions significantly vary between reservoirs and depending on local specificities. Several studies have investigated GHG emissions from reservoirs around the world, focusing mainly on reservoirs located in cold regions, temperate regions, and tropical regions. Research is lacking for reservoirs in Mediterranean countries, like Greece, and similar regions. This work initially assesses the net GHG emissions of a newly created reservoir (Ilarion est. 2012) in Western Macedonia, Greece. The methodology for net GHG emission calculation was based on the use of literature data concerning pre-impoundment emission factors and local specificities of the reservoir (terrain type, canopy cover), as well as on the 2-year measurement data that were collected using a “static floating chamber.” Furthermore, in this work, the gross GHG emissions of an older, in-line reservoir (Polyfytos est. 1974) were also calculated, based on 2-year measurement data. The results show that the global warming potential (GWP) of the reservoirs is dictated by methane emissions; it minimizes during winter and spring and maximizes during summer and autumn. Hydroelectric energy production at Ilarion Reservoir results in 32 to 97 times less total CO2 equivalent emissions in comparison to fossil fuels, while at Polyfytos Reservoir only 8 to 24 times less (based on gross emissions). It appears that the impact of a reservoir’s morphology on GHG emissions is more significant than that of a reservoir’s age.