CRIS - TEI of EpirusThe DSpace digital repository system captures, stores, indexes, preserves, and distributes digital research material.http://cris.teiep.gr:80/jspui2018-03-19T03:19:52Z2018-03-19T03:19:52ZA solution of the 4th clay millennium problem about the Navier-Stokes equations.Kyritsis, Konstantinoshttp://cris.teiep.gr/jspui/handle/123456789/16282018-02-28T01:00:28Z2018-02-25T00:00:00ZTitle: A solution of the 4th clay millennium problem about the Navier-Stokes equations.
Authors: Kyritsis, Konstantinos
Abstract: In this paper it is solved the 4th Clay Millennium problem about the Navier-Stokes equations, in the direction of regularity. It is done so by utilizing the hypothesis of finite initial energy and by applying the regularity of the Poisson equation which is a well- studied linear PDE, involving the also well studies harmonic functions. The Poisson equation either in scalar or vector form, relates many magnitudes of the flow, like pressures and velocities, velocity and vorticity and velocities and viscosity forces. It is also proved 5 new necessary and sufficient conditions of regularity based on the pressures, viscosity forces, trajectories lengths, pressure forces etc. The final key result to derive the regularity is that the pressures are bounded in finite time intervals, as proved after projecting the work of the pressures forces on specially chosen bundles of paths.2018-02-25T00:00:00ZPrediction ability of Altman model for bankruptcy in Greek enterprisesDiakomihalis, Mihail N.Chytis, Evangelos T.Gouda, Konstantina M.http://cris.teiep.gr/jspui/handle/123456789/16272018-02-20T09:18:36Z2017-01-01T00:00:00ZTitle: Prediction ability of Altman model for bankruptcy in Greek enterprises
Authors: Diakomihalis, Mihail N.; Chytis, Evangelos T.; Gouda, Konstantina M.
Abstract: This study initially decodes and analyzes the financial robustness of companies that bankrupt in 2012, aiming to determine with the use of historical data the factors that could forecast the bankruptcy of these enterprises. The year 2012 was selected because Greece was the unique country from the GIIPS states (Greece, Ireland, Italy, Portugal and Spain) in which paradoxically 2012 is the year with inversion of the tendency and reduction (6.74%) in the number of recorded corporate bankruptcies.
For the research purpose the second- revised Altman Z-score model is used, which was applied in a ten sample of bankrupted enterprises from various branches.
The rate of success of the model in the final sample of enterprises one year before the bankruptcy is 100%, which means higher predictability than the percentage of 94% exported by Altman in 1968. As long as it concerns the rate of success 2 years before bankruptcy it was presented smaller compared to the -1 year (80%), however comparing the result with the application of Altman (72%), the model in the present research presented also higher prediction ability.
The reversal of the trend of the legally recorded bankruptcies in Greece seems to be due to statistical rather than economic reasons. Many small and medium size firms as well as sole traders led to closure, but their bankruptcy was not recorded as judicial bankrupt2017-01-01T00:00:00ZProfessional development of transference teachers to administrating / financial positionsDiakomihalis, Mihail N.Bolovinou, Eleni C.Papageorgakis, Panagiotis E.http://cris.teiep.gr/jspui/handle/123456789/16262018-02-20T09:17:28Z2017-01-01T00:00:00ZTitle: Professional development of transference teachers to administrating / financial positions
Authors: Diakomihalis, Mihail N.; Bolovinou, Eleni C.; Papageorgakis, Panagiotis E.2017-01-01T00:00:00ZΗ μερισματική πολιτική των τουριστικών επιχειρήσεων στην ΕλλάδαΔιακομιχάλης, Μ.Χύτης, Ε.Καψιόχας, Ν.http://cris.teiep.gr/jspui/handle/123456789/16252018-02-20T08:52:49Z2016-01-01T00:00:00ZTitle: Η μερισματική πολιτική των τουριστικών επιχειρήσεων στην Ελλάδα
Authors: Διακομιχάλης, Μ.; Χύτης, Ε.; Καψιόχας, Ν.
Description: Περιέχει 22 διαφάνειες2016-01-01T00:00:00Z