Calin Vamos
Publications

Continuous models of corpuscular systems

• C. Vamos, Continuous fields associated to corpuscular systems, Ed. Risoprint, Cluj-Napoca, 2007, ISBN 978-973-751-557-5 (in Romanian).
• C. Vamos, N. Suciu and W. Blaj, Derivation of one-dimensional hydrodynamic model for stock price evolution, Physica A 287, 461-467 (2000).
• N. Suciu, C. Vamos, A. Georgescu, U. Jaekel, and H. Vereecken, Coarse Grained and Stochastic Averages. Applications to Transport Processes in Porous Media, Internal Report No. 500198, Forschungszentrum Julich, ICG-4, May 1998.
• C. Vamos, N. Suciu, and A. Georgescu, Hydrodynamic equations for one-dimensional systems of inelastic particles, Physical Review E, Vol. 55, 6277-6280 (1997).
• C. Vamos, N. Suciu, A. Georgescu, and I. Turcu, Balance equations for physical systems with corpuscular structure, Physica A, Vol. 227, 81-92 (1996).
• C. Vamos, A. Georgescu, and N. Suciu, Balance equations for a finite number of particles, Studii si Cercetari Matematice, Vol. 48, 115-127 (1996).
• N. Suciu, C. Vamos, A. Georgescu, U. Jaekel, and H. Vereecken, Coarse Grained Averages in Porous media, Internal report No. 501296, Forschungszentrum Julich, ICG-4, august 1996.
• N. Suciu, C. Vamos, and A. Georgescu, A Kinematic Method for the Study of the Constitutive Equations, Proc. of the First Conf. of Applied and Ind. Math., Oradea, Sept. 3-5, 1993, Univ. of Oradea, ROMAI-Bucharest, 224-248 (1994).
• C. Vamos and T. Petrila, Velocity balance equation for a fluid mixture, Rev. Roum. Sci. Techn.-Mec. Appl., Vol. 38, 277-282 (1993).
• C. Vamos, A. Georgescu, and N. Suciu, Balance equations for the vector fields defined on orientable manifolds, Tensor N.S., Vol. 54, 63-67 (1993).
• N. Suciu, C. Vamos, and A. Georgescu, On Irreversibility and Turbulence, ROMAI Newsletter 3, 4-10 (1995).
• C. Vamos, N. Suciu, A. Georgescu, A physical relevant definition of the reversible dynamical systems (in Romanian), Proceedings of the Conference preparing the Congress of the Romanian Mathematicians, Bucharest University, vol. II, 207-209, 1993.
• A. Georgescu, C. Vamos, and N. Suciu, Turbulence scenarios for the determinist chaos (in Romanian), St. Cerc. Mec. Apl., Vol. 49, 413-417 (1990).

Time series theory and quantitative finance

• A. Pop, C. Vamos, and V. Turcu, Deterministic components in the light curve amplitude of Y Oph, The Astronomical Journal 139, 425, 2010
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• C. Pop, C. Vamos, M. Craciun, C. Curutiu, Is Bucharest Stock Exchange Influenced by the Five Traded Financial Investment Companies?, Proceedings of the IASK International Conference Global Management 2009, Seville, Spain, June 22-24, ISBN: 978-989-95806-9-5, pp. 603-613.
• Vamos C., M. Craciun, Serial correlation of detrended time series, Pysical Review E, Vol. 78, Issue 3, Article Number: 036707, 2008.
• C. Vamos, M. Craciun, Influence of deterministic trend on the estimated parameters of GARCH(1,1) model, Creative Math. and Inf., 17 (2008), No. 3, 525 – 531.
• C. Vamos, Automatic algorithm for monotone trend removal, Physical Review E 75, 036705 (2007), DOI: 10.1103/PhysRevE.75.03670.
• C. Vamos, Stefan M. Soltuz, Maria Craciun, Order 1 autoregressive process of finite length, Rev. Anal. Numer. Theor., no.2 (2007), available online: http://lanl.arxiv.org/abs/0709.2963.
• V.V. Morariu, L. Buimaga-Iarinca, C. Vamos, S.M. Soltuz, Detrended fluctuation analysis of autoregressive processes, Fluctuations and noise letters, Vol. 7, No. 3, 2007. pag. L249-L255.
• A. Pop and C. Vamos, The detection and diagnosis of low-level stellar variability through resampling methods, Rom. Astr. J., Vol. 17, No. 2, p. 101-108, 2007.
• C. Vamos, Maria Craciun, Average conditional jump for a white noise superposed on a linear trend, International Conference on Engineering and Mathematics, 9-11 July, 2007, Bilbao, Spain, p. 51-56.

Numerical modeling of the transport in porous media

• N. Suciu, C. Vamos, F.A. Radu, H. Vereecken, and P. Knabner, Persistent memory of diffusing particles, Physical Review E 80, 061134, 2009
• Suciu N, C. Vamos, Ergodic estimations of upscaled coefficients for diffusion in random velocity fields, in Monte Carlo and quasi-Monte Carlo methods 2008, Ed. P. L'Ecuyer and B. Owen, Springer Verlag, Heidelberg, pp: 617-626, 2009.
• Suciu N, C. Vamos, H. Vereecken, K. Sabelfeld, P. Knabner, Memory effects induced by dependence on initial conditions and ergodicity of transport in heterogeneous media, Water Resources Research, Vol. 44, Issue 8, Article Number W08501, 2008.
• Eberhard, J., N. Suciu, and, C. Vamos, On the self-averaging of dispersion for transport in quasi-periodic random media, J. Phys. A: Math. Theor., 40, 597-610, doi:10.1088/1751-8113/40/4/002, 2007.
• Suciu N., and C. Vamos, Comment on "Nonstationary flow and nonergodic transport in random porous media" by G. Darvini and P. Salandin, Water Resources Research, 43, W12601, doi:10.1029/2007WR005946, 2007.
• Suciu N., C.Vamos, J.Vanderborght, H.Hardelauf, and H. Vereecken, Numerical investigations on erogodicity of solute transport in heterogeneous aquifers, Water Resour. Res., 42 (2006), W04409, doi: 10.1029/2005WR004546.
• Suciu N., J.P.Eberhard, and C.Vamos, Evaluation of the first-order approximations for transport in heterogeneous media, Water Resour. Res., W11504 doi:10.1029/2005WR004714, 2006
• Suciu N., and C.Vamos, Evaluation of overshooting errors in particle methods for diffusion by biased global random walk, Rev. Anal. Num. Th. Approx. Tome 35, 2006, pp.119-126.
• N. Suciu, C. Vamos, P. Knabner, and U. Ruede, Biased global random walk, a cellular automaton for diffusion, in Simulationstechnique, 18-th Symposium in Erlangen, September 2005, Ed. Husemann, M. Kowarschik, and, U. Rude, pp. 562--567, SCS Publishing House e. V., Erlangen.
• Suciu N., J. P. Eberhard, and C. Vamos, Approximations and ergodicity for transport in heterogeneous media by periodic random fields, Preprint 06/05, Forschungsverbund WIR Baden-Wurtenberg, Heidelberg, January 20, 2005.
• N. Suciu, C. Vamos, H. Vereecken, J. Vanderborght, and H. Hardelauf, Numerical Modeling of Large Scale Transport of Contaminant Solutes Using the Global Random Walk Algorithm, Monte Carlo Methods and Applications, 10(2), 153-177, 2004.
• N. Suciu, C. Vamos, H. Vereecken, J. Vanderborght, and H. Hardelauf, Global Random Walk Model of Diffusion in Random Velocity Fields, Buletin stiintific, Seria Mat. si Inf. (9), 307-312, Univ. Pitesti, 2003.
• Suciu N., C. Vamos, J.Vanderborght, H. Hardelauf, and H. Vereecken, Numerical Investigations on Ergodicity of Solute Transport in Heterogeneous Aquifers, Internal Report ICG-IV 00204, Forschungszentrum Julich, April, 2004.
• N. Suciu and C. Vamos, Effective diffusion in heterogeneous media, Internal Report ICG-IV.00303, Forschungszentrum Julich, July 2003.
• N. Suciu and C. Vamos, H. Hardelauf, J.Vanderborght and H. Vereecken, The simulation of large scale transport in groundwater. Technical issues, Internal Report ICG-IV.00703, Forschungszentrum Julich, September 2003.
• N. Suciu, C. Vamos, H. Vereecken, J. Vanderborght, and H. Hardelauf, Numerical modeling of large scale transport of contaminate solutes in heterogeneous aquifers using a new particles method, Proceedings of the CAIM-2003 conference, Mai 29-31 2003, Oradea , Romania, pp. 215-221.
• C. Vamos, N. Suciu, and H. Vereecken, Generalized random walk algorithm for the numerical modeling of complex diffusion processes, J. Comp. Phys., 186(2), pp. 527-544, 2003.
• N. Suciu, C. Vamos, H. Vereecken, and J.Vanderborght, Numerical Modeling of Solute Transport in Heterogeneous Aquifers, pp. 111-140 in G. Marinovschi and I. Stelian (editors), Proceedings of the first Workshop on Mathematical Modeling of Environmental Problems, Ed. Academiei Romane, Bucharest 2002.
• C. Vamos, N. Suciu, H. Vereecken, O. Nitzsche, and H. Hardelauf, Global Random Walk Simulations of Diffusion, pp. 343-354 in Scientific Computing, Validated Numerics, Interval Methods, Edited by Kramer and Wolff von Gudenberg, Kluwer Academic/Plenum Publishers, New York, 2001.
• C. Vamos, N. Suciu, H. Vereecken, J. Vanderborght, and O. Nitzsche, Path decomposition of discrete effective diffusion coefficient, Internal Report ICG-IV.00501, Forschungszentrum Julich, November 2001.
• C. Vamos, N. Suciu, H. Vereecken, O. Nitzsche, and H. Hardelauf, Global random walk simulations of diffusion in unbounded domains, Internal Report No. 502000, Forschungszentrum Julich/ICG-4, September 2000.
• C. Vamos, N. Suciu, H. Vereecken, U. Jaekel, and H. Schwarze, Random Walkers Cellular Automata for Diffusion Processes, Z. Angew. Math. Mech. (ZAMM) 80, S367-68 (2000).
• N. Suciu, C. Vamos, A. Georgescu, U. Jaeckel, and H. Vereecken, Transport processes in porous media. 1. Continuous modeling, Rom J. of Hydr. & Water Resour. 5, No. 1-2, 39-56 (1998).
• C. Vamos, N. Suciu, A. Georgescu, U. Jaeckel, and H. Vereecken, Transport processes in porous media. 2. Numerical modeling, Rom J. of Hydr. & Water Resour. 5, No. 1-2, 85-98 (1998).
• C. Vamos, N. Suciu, U. Jaekel, and H. Vereecken, Numerical Modelling of Diffusion Processes by Cellular Automata, Internal Report No. 501198, Forschungszentrum Julich, ICG-4, July 1998.
• N. Suciu et C. Vamos, Simulation numérique du transport dans les milieux poreux stratifiés par une methode d'automate cellulaire, Communications presentées au Seminaire ARDI, INMH, Bucarest, Vol.1, 172-177 (1997).
• C. Vamos, N. Suciu, and M. Peculea, Numerical modelling of the one-dimensional diffusion by random walkers, Revue d'analyse numérique et de théorie de l'approximation, Vol. 26, No. 1-2, 237-247 (1997).
• N. Suciu, H. Vereecken, C. Vamos, A. Georgescu, U. Jaekel, and O. Neuendorf, On Lagrangian Passive Transport in Porous Media, Internal report No. 501196, Forschungszentrum Julich, ICG-4, august 1996.
• N. Suciu, A. Geogescu, C. Vamos, D. Mihu, The study of the pollutant dispersion in aerian and hydric medium using the homogenization method (in Romanian), Proceedings of the Fluid Mechanics and its Technical Applications Colloquium, 386-392 (1989).

Numerical modeling of metals and alloys casting

• Vasile Soporan, Calin Vamos, Carol Pavai, Numerical Modeling of Solidification (in Romanian), Ed. Dacia, Cluj-Napoca, 2003.
• V. Soporan, C. Vamos, C. Pavai, The influence of the alloy flow during the cast filling on the solidification process (in Romanian), Metalurgia, Vol. 51, Nr. 4, 56-70 (1999).
• V. Soporan, C. Vamos, C. Pavai, Numerical modeling with reduced resolution of the solidification process of the parts with great dimensions (in Romanian), Revista de turnatorie, No. 1, 6-10 (1998).
• V. Soporan, C. Vamos, C. Pavai, The qualitative analysis of the numerical modeling of solidification and the shrinkage formation (in Romanian) Metalurgia, Vol. 50, No. 1, 27-31 (1998).
• V. Soporan, C. Vamos, C. Pavai, Technological and constructive optimization of the parts using numerical methods (in Romanian) Metalurgia, Vol. 50, No. 2, 43-51 (1998).
• V. Soporan, C. Vamos, and C. Pavai, Numerical modeling of the cavities during the alloys solidification, Metalurgia, Vol. III, No. 4, 53-55 (1998).
• V. Soporan, C. Vamos, and C. Pavai, Numerical simulation for technological interpretation of solidification process castings, Metalurgia, Vol. III, No. 4, 56-60 (1998).
• V. Soporan, C. Vamos, and C. Pavai, Numerical modeling of the cavities during the alloys solidification, Proceedings of The Second International Conference on Materials and Manufacturing Technologies, Cluj-Napoca, 889-892 (1998).
• V. Soporan, C. Vamos, C. Pavai, Numerical simulation for technological interpretation of solidification process castings, Proceedings of The Second International Conference on Materials and Manufacturing Technologies, Cluj-Napoca, 893-898 (1998).
• V. Soporan, C. Vamos, C. Pavai, Numerical simulation of the contraction and the shrinkage formation during the solidification process (in Romanian), pp. 163-168, in Metals and alloys casting and solidification, tome I, nr. 1, U.T. Press, Cluj-Napoca, 1998.
• V. Soporan, C. Vamos, C. Pavai, The determination of optimal position for casting using the solidification direction curves, pag. 167-172 (in Romanian), in Metals and alloys casting and solidification, tome I, nr. 1, U.T. Press, Cluj-Napoca, 1998.
• V. Soporan, C. Pavai, C. Vamos, The optimization of the technological parameters of the ingot steel casting using numerical modeling (in Romanian), Metalurgia, Vol. 48, No. 11, 42-47 (1996).
• V. Soporan, C. Vamos, C. Pavai, Optimization of the thermical regime of the steel solidification within ingot, Metalurgia, Vol. 48, No. 11, 53-57 (1996).
• V. Soporan, F. Lungu, C. Vamos, C. Pavai, M. Crisan, The Modelling of Hydraulic and Thermic Phenomena Specific of Casting Alloys, Proceedings of 12^th International Conference on Process Control and Simulation, Kosice, 169-176 (1996).
• C. Vamos, C. Pavai, V. Soporan, Numerical modeling of casting process, Revue d'analyse numérique et de théorie de l'approximation, Vol. 25, No. 1-2, 247-255 (1996).

Meteorological numerical models, atmospheric dynamics, and geophysics

• C. Vamos and A. Georgescu, Models of asymptotic approximation for synoptical flows, Zeitschrift fur Meteorologie, Vol. 40, 14-20 (1990).
• C. Vamos, A. Georgescu, The forth order asymptotic approximation of the meteorological primitive equations when the Rossby number tends to zero, St. Cerc. Meteorologice, Vol. 3, 13-21 (1989).
• C. Vamos and A. Georgescu, Filtered equations as an approximation model, Meteorology and Hydrology, Vol. 19, 21-22 (1989).
• C. Vamos, A. Georgescu, Asymptotic approximation models in the atmosphere dynamics (in Romanian), National Conference of the Applied Mathematics and Mechanics, Cluj-Napoca, 141-143 (1988).
• C. Vamos and E. Cordoneanu, The Importance of the Planetary Boundary Structure in the Numerical Integration of the Hydrostatic Relation, Proceedings of the XIII^th International Conference on Carpathian Meteorology, Busteni, 265-270 (1987).
• C. Vamos and D. Banciu, Verification method for the ordinal predictand forecasts, Meteorology and Hydrology, Vol. 16, 23-27 (1986).
• C. Vamos and I. Draghici, A new coordinate system to treat orography in primitive equations, Meteorology and Hydrology, Vol. 16, 9-18 (1986).
• C. Vamos si N. Suciu, Regarding the Action of Sun and Moon on the Movement of Core of the Earth, preprint ICEFIZ, EP-24 (1983).
• C. Vamos, The Earth sphericity influence on the planetary waves, Studii si cercetari meteorologice, Vol. 3, pp. 133-140 (1982).

Other numerical simulations

• C.V.L. Pop, I. Turcu, C.Vamos, Simulation of fluctuating interference pattern for light scattered on erythrocytes in suspension, Studia Universitatis Babes-Bolyai, Physica, special issue 2, XLVIII, 2003, (p.511-514).

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