\documentstyle{article} \pagestyle{myheadings} \setlength{\textwidth}{160mm} \setlength{\textheight}{240mm} \setlength{\topmargin}{-5mm} \setlength{\oddsidemargin}{0mm} \setlength{\evensidemargin}{0mm} \setlength{\parindent}{0mm} \setlength{\parskip}{\medskipamount} \setlength{\unitlength}{1mm} \def\H0 {$H_{\rm o}$} \def\micro {$\mu\hbox{m}$} \def\kms {\hbox{${\rm km\,s}^{-1}$}} \def\arcsec {\hbox{$^{\prime\prime}$}} \def\arcmin {\hbox{$^{\prime}$}} \def\degr{\hbox{$^\circ$}} \begin{document} \centerline{\Huge \rm 2nd Astronomical Conference } \medskip \centerline{\it \Large \rm organised by the } \medskip \centerline{\Huge \rm Hellenic Astronomical Society (HEL.A.S.) } \medskip \fbox{ \centerline{\Large \rm 29 June -- 1 July 1995, Thessaloniki, Greece} } \medskip \centerline{\Large \rm \underline {Third Announcement}} \bigskip \centerline{\Large \rm \underline {Scientific and Cultural Programme}} \medskip This is the third and last Announcement for the ``2nd Hellenic Astronomical Meeting" to be held in Thessaloniki between June 29th and July 1st, 1995. It contains the Scientific and Cultural Programme of the Conference. In the next Tables you can find the final outline of the {\it Oral contributions} and the {\it Poster contributions}. In the first column of the Oral contributions you can see the allocated time-slot. The second column contains a code-word, which indicates the date of presentation (T: Thursday, F: Friday, S: Saturday), the status of the contribution (I: Invited paper, O: Oral, P: Poster) and the contribution number within the Section. The third and forth columns give the name of the {\it first author} and the {\it title} of the contribution respectively. The information for the Poster presentations is similar. Please read it carefully and send any comments or requests to: \begin{center} 2nd Hellenic Astronomical Conference \\ Local Organising Committee \\ Laboratory of Astronomy \\ University of Thessaloniki \\ GR-54006 Thessaloniki, Greece \\ FAX: (Greece) 31 995384 \hspace*{1.3cm} E-mail: elaset@astro.auth.gr \\ \end{center} Please contact the Chairman of your session, {\underline {well in advance}}, for {\it slides} and other equipment arrangements. Poster holders should contact the information desk soon after their arrival. \bigskip \bigskip \centerline{\Large \rm \bf {Programme}} \medskip \fbox{ \centerline{\Large \rm Thursday, June 29, 1995 \hspace*{1cm} Morning Sessions} } \bigskip 08:30 -- 09:30 \hspace*{0.6cm} Registration \medskip \centerline{\underline{\bf Inaugural Ceremony}} \bigskip \centerline{\rm \underline{{\bf Auditorium} \hspace*{1cm} Chairman: J. Hadjidemetriou}} \begin{tabular}{lp{14cm}} 09:30 -- 10:30 & \\ & --Welcome address by the Chairman of the Local Organising Committee, J. Hadjidemetriou \\ & --In Memoriam of Academician John Xanthakis, by L.N. Mavridis \\ & --Address by G. Contopoulos, President, Hellenic Astronomical Society \\ & --Address by J. Ventura, President, Greek National Committee for Astronomy \\ & --Address by the Rector, Aristotle University of Thessaloniki \\ & --Address by other University Officials \\ & --Addresses by Goverment and Administrative Officials\\ & --Opening of the Conference \\ \end{tabular} 10:30 -- 11:00 \hspace*{0.6cm} Coffee Break \newpage \fbox{ \centerline{\Large \rm Thursday, June 29, 1995 \hspace*{1cm} Morning Sessions} } \bigskip \centerline{\rm \underline{{\bf Auditorium} \hspace*{1cm} Chairman: P. Laskaridis}} \begin{tabular}{lccp{10cm}} 11:00 -- 12:00 & I1 & J.C.B. Papaloizou & ``{\bf Angular momentum transport mechanisms in accretion disks" (Invited paper)}\\ \end{tabular} \bigskip \centerline{\underline{\bf Section 2: Stars and Stellar Systems}} \medskip \centerline{\rm \underline{{\bf Auditorium} \hspace*{1cm} Chairman: P. Laskaridis}} \begin{tabular}{lcp{3.4cm}p{9.1cm}} \hline 12:00 -- 12:15 & T2O1 & Tsvetkov M.K. et al. & ``Wide-field plate data-base: A progress report"\\ 12:15 -- 12:30 & T2O2 & Contadakis M.E. & ``Observation of the rotational modulation effect on EV Lac and BY Dra"\\ 12:30 -- 12:45 & T2O3 & Tsvetkova K.P. et al. & ``Flare stars data-base: Present status"\\ 12:45 -- 13:00 & T2O4 & Mathioudakis M. et al. & ``Dependence of the flare activity of II Peg on the phase of the short-term periodic light variation"\\ \hline \end{tabular} \bigskip \centerline{\underline{\bf Section 1: Sun and the Planetary System}} \medskip \centerline{\rm \underline{{\bf Room A} \hspace*{1cm} Chairman: C. Alissandrakis}} \begin{tabular}{lcp{3.4cm}p{9.1cm}} \hline 12:00 -- 12:15 & T1O1 & Daglis I.A. et al. & ``Importance of plasma composition for magnetospheric plasma dynamics"\\ 12:15 -- 12:30 & T1O2 & Anagnostopoulos G.C. et al. & ``10 hours modulation of magnetic field and hot plasma characteristics observed by {\it Ulysses} outside Jupiter's bow shock"\\ 12:30 -- 12:45 & T1O3 & Belehaki €. et al. & ``Study of the large scale magnetic structures observed in the far magnetotail by the {\it Geotail} satellite"\\ 12:45 -- 13:00 & T1O4 & Anagnostopoulos G.C. et al. & ``Energy spectra, velocity dispersion and occurrence frequency of $\geq$ 50 keV ions upstream from Earth's bow shock"\\ \hline \end{tabular} \bigskip \centerline{\underline{\bf Section 3: Galaxies and Extragalactic Systems}} \medskip \centerline{\rm \underline{{\bf Room B} \hspace*{1cm} Chairman: E. Kontizas}} \begin{tabular}{lcp{3.4cm}p{9.1cm}} \hline 12:00 -- 12:15 & T3O1 & Patsis P. & ``The relation between existing resonances and observed morphology in disk galaxies"\\ 12:15 -- 12:30 & T3O2 & Voglis N. et al. & ``Can cosmological collapse create galaxies with counter-rotating cores?"\\ 12:30 -- 12:45 & T3O3 & Contopoulos J. et al. & ``Magneto-rotational instabilities in accretion disks: The role of the toroidal magnetic field"\\ 12:45 -- 13:00 & T3O4 & Vilchez J.M. & ``Effects of the environment on the evolution of star-forming galaxies"\\ \hline \end{tabular} \bigskip 13:00 -- 16:00 \hspace*{0.6cm} Lunch Break \newpage \fbox{ \centerline{\Large \rm Thursday, June 29, 1995 \hspace*{1cm} Afternoon Sessions} } \bigskip \centerline{\rm \underline{{\bf Auditorium} \hspace*{1cm} Chairman: G.C. Anagnostopoulos}} \begin{tabular}{lccp{10cm}} 16:00 -- 17:00 & TI2 & K.D. Papadopoulos & ``{\bf Geomagnetic Substorm: Modern Prospectives" (Invited paper)}\\ \end{tabular} \bigskip \centerline{\underline{\bf Section 1: Sun and the Solar System}} \medskip \centerline{\rm \underline{{\bf Auditorium} \hspace*{1cm} Chairman: G.C. Anagnostopoulos}} \begin{tabular}{lcp{3.4cm}p{9.1cm}} \hline 17:00 -- 17:15 & T1O5 & Sarafopoulos D.V. et al. & ``Scattering of energetic ions outside the Earth's magnetosphere detected by simultaneous observations by {\it GEOTAIL} and {\it IMP--8}"\\ 17:15 -- 17:30 & T1O6 & Daglis I.A. et al. & ``Fast neutral atom imaging of space plasmas"\\ 17:30 -- 17:45 & T1O7 & Sarafopoulos D.V. & ``Long duration Pc 5 compressional pulsations inside the Earth's magnetotail lobes"\\ 17:45 -- 18:00 & T1O8 & Karanikola I. et al. & ``Characteristics of $\geq$ 50 keV magnetosheath ions"\\ \hline \end{tabular} \bigskip \centerline{\underline{\bf Section 2: Stars and Stellar Systems}} \medskip \centerline{\rm \underline{{\bf Room A} \hspace*{1cm} Chairman: M.E. Contadakis}} \begin{tabular}{lcp{3.4cm}p{9.1cm}} \hline 17:00 -- 17:15 & T2O5 & Dimitrijevic M.S. et al. & ``On the Stark Broadening of CV lines in stellar atmospheres"\\ 17:15 -- 17:30 & T2O6 & Popovic L.C. et al. & ``Stark broadening of GeII and GeIV lines"\\ 17:30 -- 17:45 & T2O7 & Dimitrijevic, M.S. et al. & ``The He--$H^*$(n) ionisation and He$^+$--He recombination in stellar atmospheres"\\ 17:45 -- 18:00 & T2O8 & Blaga C. & ``A qualitative study of the Lane-Emden equation"\\ \hline \end{tabular} \bigskip \centerline{\underline{\bf Section 3: Galaxies and Extragalactic Systems}} \medskip \centerline{\rm \underline{{\bf Room B} \hspace*{1cm} Chairman: P. Hantzios}} \begin{tabular}{lcp{3.4cm}p{9.1cm}} \hline 17:00 -- 17:15 & T3O5 & Kolokotronis V. & ``Sparse and flux limited IRAS/QDOT -- like samples and their dipole structure as an effective way of tracing the mass distribution at large scales (r $>$ 150 Mpc/h): Comparison with the cluster dipole"\\ 17:15 -- 17:30 & T3O6 & Kalinkov M. et al. & ``Kinematics and dynamics of super-clusters of galaxies"\\ 17:30 -- 17:45 & T3O7 & Plionis M. & ``The motion of the Local Group of galaxies and the large-scale velocity field"\\ 17:45 -- 18:00 & T3O8 & Hatzidimitriou D. et al. & ``Kinematical study of the outer regions of dwarf spheroidal galaxies: The case of Sculptor"\\ \hline \end{tabular} \bigskip 18:00 -- 18:15 \hspace*{0.6cm} Coffee Break \newpage \fbox{ \centerline{\Large \rm Thursday, June 29, 1995 \hspace*{1cm} Afternoon Sessions} } \bigskip \centerline{\underline{\bf Section 1: Sun and the Solar System}} \medskip \centerline{\rm \underline{{\bf Auditorium} \hspace*{1cm} Chairman: G. Tsiropoula}} \begin{tabular}{lcp{3.4cm}p{9.1cm}} \hline 18:15 -- 18:30 & T1O9 & Dimitrijevi\'c M.S. et al. & ``Electron-impact broadening of Mg II lines for solar and stellar atmospheres investigations"\\ 18:30 -- 18:45 & T1O10 & Savopoulos M. et al. & ``The acceleration and modulation of anomalous He"\\ 18:45 -- 19:00 & T1O11 & Belehaki A. et al. & ``Origin of the eruptive onset of magnetic substorms of the {\it PROMIS} period"\\ 19:00 -- 19:15 & T1O12 & Moussas X.D. et al. &``Energy balance at the earth's magnetosphere"\\ 19:15 -- 19:30 & T1O13 & Kakouris A. et al. & ``Energetic Solar and Interplanetary Particles at 20 degrees southern heliographic latitude and 5 AU distance measured by EPAC/{\it Ulysses} during November 1992"\\ 19:30 -- 19:45 & T1O14 & Moussas X. et al. & ``Heliosphere revisited: Post {\it Ulysses} 3-D turbulent picture"\\ 19:45 -- 20:00 & T1O15 & Kakouris A. et al. & ``3-D simulation results for the diffusion of solar energetic particles in the interplanetary space"\\ 20:00 -- 20:15 & T1O16 & Polygiannakis J.M. et al. & ``Non-linear dynamics in the interplanetary magnetic field fluctuations"\\ \hline \end{tabular} \bigskip \centerline{\underline{\bf Section 2: Stars and Stellar Systems}} \medskip \centerline{\rm \underline{{\bf Room A} \hspace*{1cm} Chairman: E. Antonopoulou}} \begin{tabular}{lcp{3.4cm}p{9.1cm}} \hline 18:15 -- 18:30 & T2O9 & Eigenson A. & ``Uni-modality of globular cluster metallicity function"\\ 18:30 -- 18:45 & T2O10 & Kalimeris A. et al. & ``Observed orbital period changes of contact binaries and the underlying short-time scale evolutionary processes"\\ 18:45 -- 19:00 & T2O11 & Eigenson A. et al. & ``Multidimensional Statistical Analysis of Star Clusters"\\ 19:00 -- 19:15 & T2O12 & Rovithis-Livaniou E. et al. & ``The Contact System BD +36$^o$ 5017"\\ 19:15 -- 19:30 & T2O13 & Lazaro C. et al. & ``A photometric study of the eclipsing system GR Tau"\\ 19:30 -- 19:45 & T2O14 & Rovithis-Livaniou E. et al. & ``Study of the period changes of V505 Sagittarii system"\\ 19:45 -- 20:00 & T2O15 & Niarchos P.G. et al. & ``New BV photometry of the contact system VW Cephei"\\ \hline \end{tabular} \bigskip \centerline{\underline{\bf Section 3: Galaxies and Extragalactic Systems}} \medskip \centerline{\rm \underline{{\bf Room B} \hspace*{1cm} Chairman: N. Kylafis}} \begin{tabular}{lcp{3.4cm}p{9.1cm}} \hline 18:15 -- 18:30 & T3O9 & Xanthopoulos E. & ``Ionisation maps of Seyfert 1 and Seyfert 2 galaxies"\\ 18:30 -- 18:45 & T3O10 & Polatidis A. et al. & ``The first Caltech-Jodrell Bank VLBI survey"\\ 18:45 -- 19:00 & T3O11 & Kuneva L. et al. & ``Reference Catalog of Groups of Galaxies"\\ 19:00 -- 19:15 & T3O12 & Kontizas M. et al. & ``Mass segregation in young Large Magelanic Cloud (LMC) clusters"\\ 19:15 -- 19:30 & T3O13 & Kontizas E. et al. & ``Planetary Nebulae associated with the Large Magelanic Cloud (LMC)"\\ 19:30 -- 19:45 & T3O14 & Kontizas M. et al. & ``Influence of the environment in the dynamical evolution of stellar systems"\\ 19:45 -- 20:00 & T3O15 & Dapergolas A. et al. & ``Stellar associations in the Large Magelanic Clouds LH52 nad LH53"\\ 20:00 -- 20:15 & T3O16 & Bellas-Velidis I. et al. & ``Automated spectral classification of stars in nearby galaxies"\\ 20:15 -- 20:30 & T3O17 & Hantzios P. et al. & ``Spectral classification of stars in external galaxies: The Large Magelanic Cloud (LMC)"\\ \hline \end{tabular} \bigskip 21:00 -- 23:00 \hspace*{0.6cm} Welcome drink \newpage \fbox{ \centerline{\Large \rm Friday, June 30, 1995 \hspace*{1cm} Morning Sessions} } \bigskip \centerline{\rm \underline{{\bf Auditorium} \hspace*{1cm} Chairman: N. Spyrou}} \begin{tabular}{lccp{10cm}} 08:30 -- 09:30 & FI3 & D. Kazanas & ``{\bf Alternatives to dark matter" (Invited paper)}\\ \end{tabular} \bigskip \centerline{\underline{\bf Section 2: Stars and Stellar Systems}} \medskip \centerline{\rm \underline{{\bf Auditorium} \hspace*{1cm} Chairman: J.H. Seiradakis}} \begin{tabular}{lcp{3.4cm}p{9.1cm}} \hline 09:30 -- 09:45 & F2O17 & Niarchos P.G. & ``A spot model treatment of the O'Connell effect in the light curves of close binary systems"\\ 09:45 -- 10:00 & F2O18 & Pavlakis K. et al. & ``OH masers as diagnostics of physical conditions in star-forming regions"\\ 10:00 -- 10:15 & F2O19 & Niarchos P.G. et al. & ``Observational aspects of circulation in contact binaries"\\ 10:15 -- 10:30 & F2O20 & Danezis E. et al. & ``A first approximation of the shell structure of Be binary stars"\\ \hline \end{tabular} \bigskip \centerline{\underline{\bf Section 3: Galaxies and Extragalactic Systems}} \medskip \centerline{\rm \underline{{\bf Room A} \hspace*{1cm} Chairman: J.C.B. Papaloizou}} \begin{tabular}{lcp{3.4cm}p{9.1cm}} \hline 09:30 -- 09:45 & F3O18 & Taramopoulos A. et al. & ``Tracing the HI edge of NGC 628"\\ 09:45 -- 10:00 & F3O19 & Charmandaris V. et al. & ``A Study of the Peculiar Galaxy Arp~10"\\ 10:00 -- 10:15 & F3O20 & Taramopoulos A. et al. & ``HI observations of the starburst galaxy NGC 2146"\\ 10:15 -- 10:30 & F3O21 & Manolakou K. et al. & ``Stochastic particle acceleration in a strongly turbulent flow of a jet"\\ 10:30 -- 10:45 & F3O22 & Tsinganos K. & ``Cosmic jets and winds as self-similar plasma outflows"\\ \hline \end{tabular} \bigskip \centerline{\underline{\bf Section 4: Relativity, Relativistic Astrophysics and Cosmology}} \medskip \centerline{\rm \underline{{\bf Room B} \hspace*{1cm} Chairman: N. Spyrou}} \begin{tabular}{lcp{3.4cm}p{9.1cm}} \hline 09:30 -- 09:45 & F4O1 & Andersson N. et al. &``On the oscillation spectra of relativistic stars"\\ 09:45 -- 10:00 & F4O2 & Kokkotas K. et al. & ``On the estimation of the post-Newtonian parameters in the gravitational-wave emission of a coalescing binary"\\ 10:00 -- 10:15 & F4O3 & Apostolatos Th. & ``The role of spin effects on gravitational waves coming from compact binaries"\\ 10:15 -- 10:30 & F4O4 & Sakellariadou M. & ``Numerical Experiments in String Cosmology"\\ 10:30 -- 10:45 & F4O5 & Nickas G. & ``The quasi-steady state cosmology and its relation to the origin of life"\\ \hline \end{tabular} \bigskip 10:45 -- 11:00 \hspace*{0.6cm} Coffee Break \newpage \fbox{ \centerline{\Large \rm Friday, June 30, 1995 \hspace*{1cm} Morning Sessions} } \bigskip \centerline{\underline{\bf Section 2: Stars and Stellar Systems}} \medskip \centerline{\rm \underline{{\bf Auditorium} \hspace*{1cm} Chairman: E. Rovithis-Livaniou}} \begin{tabular}{lcp{3.4cm}p{9.1cm}} \hline 11:30 -- 11:45 & F2O21 & Kylafis N. et al. & ``X-ray spectral formation in a converging fluid flow: Accretion onto neutron stars and black holes"\\ 11:45 -- 12:00 & F2O22 & Psaltis D. et al. & ``X-ray Spectra of Neutron-Star Low Mass X-ray Binaries"\\ 12:00 -- 12:15 & F2O23 & Kalogera V. & ``Formation of Low-Mass X-ray Binaries"\\ 12:15 -- 12:30 & F2O24 & Mathioudakis M. & ``The secrets of EUVE J2056-17.1"\\ 12:30 -- 12:45 & F2O25 & Mitrou C.K. et al. & ``The RS CVn binaries seen through the eye of IRAS"\\ 12:45 -- 13:00 & F2O26 & Psaltis D. et al. & ``PSR 1237+25: A seven-component pulsar"\\ 13:00 -- 13:15 & F2O27 & Xilouris K. et al. & ``Emission properties of pulsars at mm-wavelengths"\\ 13:15 -- 13:30 & F2O28 & Tsakmakis P. et al. & ``Statistical Moments of Pulsar Emission Distribution"\\ \hline \end{tabular} \bigskip \centerline{\underline{\bf Section 1: Sun and the Solar System}} \medskip \centerline{\rm \underline{{\bf Room A} \hspace*{1cm} Chairman: K. Poulakos}} \begin{tabular}{lcp{3.4cm}p{9.1cm}} \hline 11:30 -- 11:45 & F1O17 & Georgoulis M. et al. & ``Are flares the result of a self organisation process in active regions?"\\ 11:45 -- 12:00 & F1O18 & Anastasiadis A. et al. & ``The acceleration and transport of energetic particles inside an evolving active region"\\ 12:00 -- 12:15 & F1O19 & Kakouris et al. & ``Astrophysical flows: Analytical 2-D solutions"\\ 12:15 -- 12:30 & F1O20 & Tsiropoula G. et al. & ``Running chromospheric penumbral waves in a sunspot"\\ 12:30 -- 12:45 & F1O21 & Erkapic S. et al. & ``Microturbulance sensitivity on some solar spectral lines"\\ 12:45 -- 13:00 & F1O22 & Tsiropoula G. et al. & ``The fine structure of the velocity field in the penumbra of a chromospheric sunspot"\\ 13:00 -- 13:15 & F1O23 & Mylonas et al. & ``Computational model for the evolution of solar and stellar active regions"\\ 13:15 -- 13:30 & F1O24 & Pavlos G. & ``Chaotic dynamics and space plasma"\\ \hline \end{tabular} \bigskip \centerline{\underline{\bf Section 4: Relativity, Relativistic Astrophysics and Cosmology}} \medskip \centerline{\rm \underline{{\bf Room B} \hspace*{1cm} Chairman: S. Persides}} \begin{tabular}{lcp{3.4cm}p{9.1cm}} \hline 11:30 -- 11:45 & F4O6 & Papadopoulos D.B. & ``Null strings in anisotropic cosmological models"\\ 11:45 -- 12:00 & F4O7 & Kleidis K. et al. & ``Cosmological solutions in Kaluza-Klein theories of quadratic lagrangians"\\ 12:00 -- 12:15 & F4O8 & Petropoulos B. et al. & ``The influence of black holes in the evolution of Cosmos"\\ 12:15 -- 12:30 & F4O9 & Kalinkov M et al. & ``Disappearance of Hierarchical Clustering?"\\ 12:30 -- 12:45 & F4O10 & Papathanasiou H. et al. & ``Gamma ray burst models: Universal spectral characteristics"\\ 12:45 -- 13:00 & F4O11 & Georganopoulos M. & ``Numerical Simulation of the Inner Jets of Blazars"\\ 13:00 -- 13:15 & F4O12 & Graos F. & ``Spectral shift at the interior of a realistic gravitating source"\\ 13:15 -- 13:30 & F4O13 & Sakellariadou M. & ``Doppler Peaks of the Texture Scenario of Structure Formation"\\ 13:30 -- 13:45 & F4O14 & Petropoulos B. et al. & ``A new theory for the explanation of the disturbed spectral lines of quasars"\\ \hline \end{tabular} \bigskip 13:45 -- 16:00 \hspace*{0.6cm} Lunch Break \newpage \fbox{ \centerline{\Large \rm Friday, June 30, 1995 \hspace*{1cm} Afternoon Sessions} } \bigskip \centerline{\rm \underline{{\bf Auditorium} \hspace*{1cm} Chairman: J. Papamastorakis}} \begin{tabular}{lccp{10cm}} 16:00 -- 17:00 & FI4 & R. Wielebinski & ``{\bf Radio astronomy research in Europe (Invited paper)}"\\ \end{tabular} \bigskip \centerline{\underline{\bf Section 1: Sun and the Solar System}} \medskip \centerline{\rm \underline{{\bf Auditorium} \hspace*{1cm} Chairman: E. Mavromihalaki}} \begin{tabular}{lcp{3.4cm}p{9.1cm}} \hline 17:00 -- 17:15 & F1O25 & Lyritzis J. & ``Semi-periodic variations in the solar neutrino flux"\\ 17:15 -- 17:30 & F1O26 & Polygiannakis J.M. et al. & ``A non-linear RLC model for the Solar Cycle"\\ 17:30 -- 17:45 & F1O27 & Lyritzis J. & ``On the variability of the atmospheric activity of Jupiter"\\ 17:45 -- 18:00 & F1O28 & Xanthakis J. et al. & ``Variations of the Jovian atmospheric activity in the equatorial zone"\\ \hline \end{tabular} \bigskip \centerline{\underline{\bf Section 5: Celestial Mechanics, Stellar Dynamics and Chaotic Systems}} \medskip \centerline{\rm \underline{{\bf Room A} \hspace*{1cm} Chairman: H. Varvoglis}} \begin{tabular}{lcp{3.4cm}p{9.1cm}} \hline 17:00 -- 17:15 & F5O1 & Bozis G. & ``Programmed motion in autonomous two-dimensional systems"\\ 17:15 -- 17:30 & F5O2 & Pal A. et al. & ``On the two-dimensional inverse problem of dynamics"\\ 17:30 -- 17:45 & F5O3 & Skokos Ch. et al. & ``Study of the effective stability in the restricted three-body problem"\\ 17:45 -- 18:00 & F5O4 & Skokos Ch. et al. & ``Numerical study of non-periodic orbits of a four dimensional symplectic mapping"\\ \hline \end{tabular} \bigskip \centerline{\underline{\bf Section 6: Astronomical Infrastructure in Greece}} \medskip \centerline{\rm \underline{{\bf Room B} \hspace*{1cm} Chairman: J. Papamastorakis}} \begin{tabular}{lcp{3.4cm}p{9.1cm}} \hline 17:00 -- 17:15 & F6O1 & Kontizas E. et al. & ``The Astronomical Institute and its role in the Greek Astronomical Community"\\ 17:15 -- 17:30 & F6O2 & Mavridis L.N. & ``The contribution of the Stephanion observatory in the development of observational astronomy in Greece"\\ 17:30 -- 17:45 & F6O3 & Solomos N. et al. & ``Remotely controlled operation for repetitive data acquisition: The future of the Korgialenios Astronomical Station of Kryonerion, Greece"\\ 17:45 -- 18:00 & F6O4 & van Dessel E.L. et al. & ``Observing programmes most asked for by European astronomers at ESO"\\ \hline \end{tabular} \bigskip 18:00 -- 18:15 \hspace*{0.6cm} Coffee Break \newpage \fbox{ \centerline{\Large \rm Friday, June 30, 1995 \hspace*{1cm} Afternoon Sessions} } \bigskip \centerline{\rm \underline{{\bf Auditorium} \hspace*{1cm} Chairman: L.N. Mavridis}} \begin{tabular}{lccp{10cm}} 18:15 -- 19:15 & FI5 & H. Els\"asser & ``{\bf European Optical Astronomy" (Invited paper)}\\ \end{tabular} \bigskip \centerline{\underline{\bf Section 1: Sun and the Solar System}} \medskip \centerline{\rm \underline{{\bf Auditorium} \hspace*{1cm} Chairman: X. Moussas}} \begin{tabular}{lcp{3.4cm}p{9.1cm}} \hline 19:15 -- 19:30 & F1O29 & Popovic L.C. et al. & ``The impact of SL9 fragments with Jupiter: The development of the G spot"\\ 19:30 -- 19:45 & F1O30 & Xanthakis J. et al. & ``Periodic variations of the geomagnetic index Ap and the index Rz (number of sunspots)"\\ 19:45 -- 20:00 & F1O31 & Petropoulos B. et al. & ``Relations between X-ray flux of the Sun measured by GEOS satellite and the geomagnetic index K"\\ 20:00 -- 20:15 & F1O32 & Macris C. et al. & ``The distribution of solar flares for the time period 1992-1993 and probable relation to geomagnetic phenomena"\\ 20:15 -- 20:30 & F1O33 & Mavromihalaki E. et al. & ``Large scale structures of solar activity in relation with the variations of the cosmic radiation during the 21st and 22nd solar cycle"\\ 20:30 -- 20:45 & F1O34 & Jovanovic B.D. & ``Solar activity influence on the Danube river flow, I"\\ \hline \end{tabular} \bigskip \centerline{\underline{\bf Section 5: Celestial Mechanics, Stellar Dynamics and Chaotic Systems}} \medskip \centerline{\rm \underline{{\bf Room A} \hspace*{1cm} Chairman: J. Hadjidemetriou}} \begin{tabular}{lcp{3.4cm}p{9.1cm}} \hline 19:15 -- 19:30 & F5O5 & Pal et al. & ``Quantitative and qualitative aspects of motion stability with applications in astronomy"\\ 19:30 -- 19:45 & F5O6 & Voglis N. et al. & ``Deriving the distribution function of relaxed N-body systems by model fitting of the number density"\\ 19:45 -- 20:00 & F5O7 & Zafeiropoulos B. et al. & ``Some important three-dimensional potential in astrophysics"\\ 20:00 -- 20:15 & F5O8 & Mavraganis A. et al. & ``Equilibrium states of pairs of gyrostats on the syzygy axis of two-body systems"\\ 20:15 -- 20:30 & F5O9 & Pal A. et al. & ``On the application of the Steffensen numerical integration method to the restricted three-body problem"\\ 20:30 -- 20:45 & F5O10 & Burs L. et al. & ``On the determination of the preliminary orbits of near-Earth artificial satellites"\\ \hline \end{tabular} \bigskip \centerline{\underline{\bf Section 6: Astronomical Infrastructure in Greece}} \medskip \centerline{\rm \underline{{\bf Room B} \hspace*{1cm} Chairman: L.N. Mavridis}} \begin{tabular}{lcp{3.4cm}p{9.1cm}} \hline 19:15 -- 19:30 & F6O5 & Papamastorakis J. & ``The Skinakas observatory"\\ 19:30 -- 19:45 & F6O6 & Maravelias S.E. & ``Development and evolution of astronomy in ancient Egypt"\\ 19:45 -- 20:00 & F6O6 & Tomboulides H. & ``The teaching of astronomy in Naoussa, Greece"\\ 20:00 -- 20:15 & F6O8 & Chrisovergis M.M. & ``Astronomical education in greek Secondary Schools"\\ \hline \end{tabular} \bigskip 21:30 -- 23:30 \hspace*{0.6cm} Conference dinner \newpage \fbox{ \centerline{\Large \rm Saturday, July 1, 1995 \hspace*{1cm} Morning Sessions} } \bigskip \centerline{\rm \underline{{\bf Auditorium} \hspace*{1cm} Chairman: G. Contopoulos}} \begin{tabular}{lccp{10cm}} 08:30 -- 09:30 & SI6 & Gr. Nicolis & ``{\bf Physics of Complex Systems: Progress Report" (Invited paper)}\\ \end{tabular} \bigskip \centerline{\underline{\bf Section 2: Stars and Stellar Systems}} \medskip \centerline{\rm \underline{{\bf Auditorium} \hspace*{1cm} Chairman: E. Danezis}} \begin{tabular}{lcp{3.4cm}p{9.1cm}} \hline 09:30 -- 09:45 & S2O29 & Hantzios P. & ``S-Wave Distortions of the emission-line profiles in the spectra of cataclysmic binaries"\\ 09:45 -- 10:00 & S2O30 & Stathopoulou M. et al. & ``The UV spectrum of HD 152498 and HD 175754"\\ 10:00 -- 10:15 & S2O31 & Bamias I.V. et al. & ``Bayesian methods in inverse astronomical problems"\\ 10:15 -- 10:30 & S2O32 & Glinos G. et al. & ``The physical properties and evolutionary status of the Herbig AeBe candidates NV Ori, T Ori and V350 Ori"\\ 10:30 -- 10:45 & S2O33 & Pop V. et al. & ``Neutron star models with spline-fitted equation of state"\\ \hline \end{tabular} \bigskip \centerline{\underline{\bf Section 5: Celestial Mechanics, Stellar Dynamics and Chaotic Systems}} \medskip \centerline{\rm \underline{{\bf Room A} \hspace*{1cm} Chairman: G. Contopoulos}} \begin{tabular}{lcp{3.4cm}p{9.1cm}} \hline 09:30 -- 09:45 & S5O10 & Grousouzakou E. et al. & ``Distribution of periodic orbits in a 2-D Hamiltonian system"\\ 09:45 -- 10:00 & S5O11 & Barbanis B. & ``3-D periodic orbits emanating from a parent periodic orbit"\\ 10:00 -- 10:15 & S5O12 & Varvoglis H. et al. & ``Chaotic trajectory transport in a model 3-D Hamiltonian system"\\ 10:15 -- 10:30 & S5O13 & Hadjidemetriou J. et al. & ``The hierarchical three-body problem as two two-dimensional coupled mappings"\\ 10:30 -- 10:45 & S5O14 & Voyiatzis G. et al. & ``The four-dimensional hyperbolic twist map"\\ \hline \end{tabular} \bigskip \bigskip 11:00 -- 13:30 \hspace*{0.6cm} Excursion to the {\it Vergina Exhibition} at the Archaeological Museum of Thessaloniki \bigskip \bigskip 13:30 -- 14:30 \hspace*{0.6cm} Lunch \bigskip \bigskip 15:00-- 21:00 \hspace*{0.6cm} Excursion to the {\it Petralona Cave} and Chalkidiki \bigskip \bigskip \centerline{\it \Large \rm *** End of The Conference ***} \newpage \fbox{ \centerline{\Large \rm {\bf Poster Presentations}} } \bigskip \bigskip \centerline{\underline{\bf Section 1: Sun and the Planetary System}} \medskip \begin{tabular}{lp{4cm}p{10.5cm}} \hline 1P1 & Trajkovska V. et al. & ``A method of determination of unaccounted effects affecting the declination (O-C) values for the planets"\\ 1P2 & Anagnostopoulos G.C. et al. & ``Predictions for detection of $\geq$ 50 keV bow shock drift accelerated ions by the space missions {\it Interball} and {\it Cluster}"\\ 1P3 & Anagnostopoulos G.C. et al. & ``On the origin of spectral variations of energetic (E $\geq$ 10 keV) ions within the magnetosheath and the upstream region"\\ 1P4 & Sarris E.T. et al. & ``Large scale effects of the February 10, 1994 solar event on the heliosphere"\\ \hline \end{tabular} \bigskip \bigskip \centerline{\underline{\bf Section 2: Stars and Stellar Systems}} \medskip \begin{tabular}{lp{4cm}p{10.5cm}} \hline 2P1 & Ninkovic S. et al. & ``On the value of Agekyan's factor in real double stars"\\ 2P2 & Oprescu G. et al. & ``The symbiotic star CQ Draconis observed at Bucharest and Athens observatories"\\ 2P3 & Barziv O. et al. & ``Optical photometry on cataclysmic variables: Eclipse mapping of the accretion disk of GS Pav"\\ 2P4 & Sadzakov S. et al. &``The use of the meridian observations of the Sun and the planets for the purpose of the fundamental-coordinate-system orientation"\\ 2P5 & Antonopoulou E. et al. & ``Photoelectric observations (B-V) of SZ Psc during 1993-1994"\\ 2P6 & Popovic G.M. et al. & ``The Innes constants for a double star as functions of the axes and of the apparent-orbit-positions parameters"\\ 2P7 & Sadzakov S. et al. & ``The accuracy estimate for star positions in the vicinity of radio sources in the zone -30\degr to +60\degr obtained with the LMC in Belgrade"\\ 2P8 & Damljanovic G. & ``On the systematic errors of declinations and proper motions from the Belgrade Zenith-Telescope observations in the period 1949-1960"\\ 2P9 & Markovic-Krsljanin S. & ``Variations of the linear optical polarisation of 88Her"\\ 2P10 & Djuracevic G. & ``An interpretation of the light curve of the close binary active cataclysmic variable star {\it Z Cha}, by using the inverse-problem method"\\ 2P11 & Romaniuk Ya.O. et al. & ``Detection of high-frequency oecillations of atmospheric transparency caused by atmospheric infrasound"\\ \hline \end{tabular} \bigskip \bigskip \centerline{\underline{\bf Section 3: Galaxies and Extragalactic Systems}} \medskip \begin{tabular}{lp{4cm}p{10.5cm}} \hline 3P1 & Anastasiou H. et al. & ``The density structure of giant extragalactic HII regions"\\ 3P2 & Milogradov-Turin J. et al. & ``Spectra of radio spurs between 38, 408 and 1420 MHz"\\ 3P3 & Chatzichristou E. & ``Integral field spectrography of double AGNs"\\ 3P4 & Georgantopoulos I. et al. & ``"\ deep X-ray survey with ROSAT and ASCA and the X-ray background"\\ \hline \end{tabular} \bigskip \bigskip \centerline{\underline{\bf Section 4: Relativity, Relativistic Astrophysics and Cosmology}} \medskip \begin{tabular}{lp{4cm}p{10.5cm}} \hline 4P1 & Maindl T. & ``Relativistic Orbital Motion of Binary Pulsars"\\ \hline \end{tabular} \newpage \fbox{ \centerline{\Large \rm {\bf Poster Presentations}} } \bigskip \bigskip \centerline{\underline{\bf Section 5: Celestial Mechanics, Stellar Dynamics and Chaotic Systems}} \medskip \begin{tabular}{lp{4cm}p{10.5cm}} \hline 5P1 & Caranicolas N. & ``Maps as tools for describing resonances in galactic potentials"\\ 5P2 & Markellos V.V. et al. & ``On the linear stability of core positions"\\ 5P3 & Papadakis K.E. & ``Non-linear stability of lagrangian points"\\ 5P4 & Perdios E.A. et al. & ``Bifurcations of planar to three-dimensional periodic orbits in the photogravitational resricted three-body problem"\\ 5P5 & Maindl T. & ``On the relativistic deviations of the locations of the resonances in the relativistic restricted three-body problem"\\ \hline \end{tabular} \bigskip \bigskip \centerline{\underline{\bf Section 6: Astronomical Infrastructure in Greece}} \medskip \begin{tabular}{lp{4cm}p{10.5cm}} \hline 6P1 & Solomos N. & ``The research potential of small telescopes"\\ \hline \end{tabular} \end{document}