[1] | Guest Editor: G.A. Gravvanis, Special Issue on "Aspects of Numerical Algorithms, Parallelization and Applications, Journal of Computational and Applied Mathematics, vol. 236(3), 2011, pp.279-411. |
[2] | Guest Editors: G.A. Gravvanis, J. Morrison and Heinz Stockinger, Special Section on "Defining the Grid, Experiences and Future Trends", Future Generation Computer Systems: The International Journal of Grid Computing: Theory, Methods and Applications, vol. 25(4), 2009, pp. 399-443, ISSN: 0167-739X. |
[3] | Guest Editors: G.A. Gravvanis, J. Morrison and G.C. Fox, Special Issue on Grid Technology, The Journal of Supercomputing, vol. 42(1), 2007, pp. 1-144, ISSN: 0167-739X. |
[4] | Guest Editors: G.A. Gravvanis, J. Morrison and H.R. Arabnia, Special Section on Grid Technology and Applications, Future Generation Computer Systems, The International Journal of Grid Computing: Theory, Methods and Applications, vol. 23(4), 2007, pp. 523-670, ISSN: 0167-739X. |
[5] | Guest Editors: E.A. Lipitakis, I.C. Demetriou, M.P. Bekakos, K. Margaritis, I.Z. Milovanovic, G.A. Gravvanis and A. Tassopoulos, Special Issue in memory of Professor D.J. Evans, Journal of Neural Parallel and Scientific Computations, vol. 14(2/3), 2006, pp.135-336, ISSN: 1061-5369. |
[6] | Guest Editors: G.A. Gravvanis and H.R. Arabnia, Special Section on Parallel and Distributed Algorithms and Systems, The Journal of Future Generation Computer Systems, vol. 22(1-2), 2006, pp. 32-101 ISSN: 0167-739X. (The 2003 International Conference on Parallel and Distributed Processing Techniques and Applications, June 23-26, 2003 Monte Carlo Resort, Las Vegas, Nevada, USA) |
[7] | Guest Editors: G.A. Gravvanis and H.R. Arabnia, Special Issue on Parallel and Scientific Computations with Applications, Journal of Mathematical Modelling and Algorithms, vol. 4 No 1, 2005, pp.1-128, ISSN: 1570-1166. (The 2003 International Conference on Parallel and Distributed Processing Techniques and Applications, June 23-26, 2003 Monte Carlo Resort, Las Vegas, Nevada, USA). |
[8] | Guest Editors: G.A. Gravvanis and H.R. Arabnia, Special Issue on Parallel and Distributed Algorithms, The Journal of Parallel Algorithms and Applications, vol. 19(2-3), 2004, pp. 77-193, ISSN: 1063-7192. (The 2003 International Conference on Parallel and Distributed Processing Techniques and Applications, June 23-26, 2003 Monte Carlo Resort, Las Vegas, Nevada, USA). |
[9] | Guest Editors: H.R. Arabnia, G.A. Gravvanis and M.P. Bekakos, Special Issue on Grid Computing, Journal of Neural Parallel and Scientific Computations, vol. 12(3), 2004, pp.261-454, ISSN: 1061-5369. (The 2003 International Conference on Parallel and Distributed Processing Techniques and Applications, The 2003 International Conference on Web Services and The 2003 International Conference on Internet Computing, June 23-26, 2003 Monte Carlo Resort, Las Vegas, Nevada, USA). |
[10] | Guest Editors: G.A. Gravvanis and R.W. Lewis, Special Issue Preconditioning Methods: Algorithms, Applications and Software Environments, International Journal of Computers and Structures, vol. 82(28), 2004, pp. 2361-2451, ISSN: 0045-7949, Pergamon (Elsevier), Second MIT Conference on Computational Fluid and Solid Mechanics, June 17-20, 2003, Boston, USA. |
[11] | Guest Editors G.A. Gravvanis and E.E. Santos, Special Issue on Parallel and Distributed Processing and Applications, The Journal of Supercomputing vol. 30(2), 2004, pp. 75-198, ISSN: 0920-8542. (The 2002 International Conference on Parallel and Distributed Processing Techniques and Applications, June 24-27, 2002 Monte Carlo Resort, Las Vegas, Nevada, USA). |
[12] | Guest Editors: G.A. Gravvanis and H.R. Arabnia, Special Issue on Computational Science and Applications, Journal of Mathematical Modelling and Algorithms, vol. 2(3), 2003, pp.183-294, ISSN: 1570-1166. (The 2002 International Conference on Parallel and Distributed Processing Techniques and Applications, June 24-27, 2002 Monte Carlo Resort, Las Vegas, Nevada, USA) |
[13] | Guest Editor G.A. Gravvanis, Special Issue on Computational Sciences and Scientific Computing, The Journal of Supercomputing, vol. 25(2), 2003, pp. 107-190, ISSN: 0920-8542. (The 2001 International Conference on Parallel and Distributed Processing Techniques and Applications, June 25-28, 2001 Monte Carlo Resort, Las Vegas, Nevada, USA) |
[14] | Guest Editor G.A. Gravvanis, Special Issue on Numerical Computations and Methods, Journal of Mathematical Modelling and Algorithms, vol. 1(3), 2002, pp. 151-241, ISSN: 1570-1166. (The 2001 International Conference on Parallel and Distributed Processing Techniques and Applications, June 25-28, 2001 Monte Carlo Resort, Las Vegas, Nevada, USA) |
[15] | Invited Co-Editor, International Journal of Differential Equations and Applications, vol. 5(2), 2002, pp. 113-212, ISSN: 1311-2872, eds. George Gravvanis, Dimitar Kolev and Svetoslav Nenov, Academic Publications, Invited Lectures, 12th International Colloquium on Differential Equations, 18-23 August 2001, Plovdiv, Bulgaria |
[16] | Gravvanis G.A., Matskanidis P., Giannoutakis K.M. and Lipitakis E.A. (2011): On the POSIX threads based parallelism for Finite Element approximate inverses on multicore systems, Engineering Computations, to appear |
[17] | Filelis-Papadopoulos C.K., Gravvanis G.A., Matskanidis P.I. and Giannoutakis K.M. (2011): On the GPGPU parallelization issues of finite element approximate inverse preconditioning, Journal of Computational and Applied Mathematics 236(3), 294-307 |
[18] | Kehagias D.D., Giannoutakis K.M., Gravvanis G.A. and Tzovaras D. (2011): An ontology-based mechanism for automatic categorization of web services, Concurrency and Computation: Practice and Experience, to appear |
[19] | Gravvanis G.A., Filelis-Papadopoulos C.K. and Giannoutakis K.M. (2011): Solving finite difference linear systems on GPUs: CUDA based Parallel Explicit Preconditioned Biconjugate Conjugate Gradient type Methods, Journal of Supercomputing, to appear |
[20] | Gravvanis G.A., Giannoutakis K.M. (2011): Finite element approximate inverse preconditioning for solving 3D biharmonic problems on shared memory systems, Computer Modeling in Engineering and Sciences (CMES) 71(4), 305-330 |
[21] | Koutras V.P., Platis A.N., Gravvanis G.A. (2010): Availability and performance on a grid computing environment with software rejuvenation based on approximate inverse preconditioning, HERMIS: An International Journal of Computer Mathematics and its Applications 11, (ISSN 1108-7609), http://www.aueb.gr/pympe/hermis/hermis-volume-11/HERMIS-VOL-11-PAPERS/KOUTRAS-PLATIS-GRAVVANIS_HERMIS-Journal_26_11_09.pdf |
[22] | Gravvanis G.A. (2009): High Performance Inverse Preconditioning, Archives of Computational Methods in Engineering 16(1), 77-108 |
[23] | Koutras V.P., Platis A.N. and Gravvanis G.A. (2009): Optimal server resource reservation policies for priority classes of users under cyclic non-homogeneous Markov Modeling, European Journal of Operational Research 198(2), 545-556 |
[24] | Gravvanis G.A., Giannoutakis K.M. (2008): Fast parallel finite element approximate inverses, Computer Modeling in Engineering and Sciences (CMES) 32(1), 35-44 |
[25] | Violentis J.B., Platis A.N., Gravvanis G.A. and Lipitakis E.A. (2008): Performance analysis of an electrical substation via a semi-markov process computed by generalized approximate inverse preconditioning, HERMIS: An International Journal of Computer Mathematics and its Applications 10, 33-46, (ISSN 1108-7609); http://www.aueb.gr/pympe/hermis/hermis-volume-10/HERMIS-VOL-10-PAPERS/VIOLENTIS-PLATIS-GRAVVANIS-LIPITAKIS-1.pdf |
[26] | Gravvanis G.A. (2009): OpenMP based parallel normalized direct methods for sparse finite element linear systems, The Journal of Supercomputing, 47(1), 44-52. |
[27] | Giannoutakis K.M., Gravvanis G.A. (2009): Design and implementation of parallel approximate inverse classes using OpenMP, Concurrency and Computation: Practice and Experience (CCPE), 21(2), 115-131 |
[28] | Giannoutakis K.M., Gravvanis G.A. (2008): High performance finite element approximate inverse preconditioning, Applied Mathematics and Computation (AMC), 201(1-2), 293-304 |
[29] | Gravvanis G.A. and Epitropou V.N. (2008): Java multithreading based parallel approximate arrow-type inverses, Concurrency and Computation: Practice and Experience (CCPE) 20(10), 1151-1172; available online 2007 |
[30] | Gravvanis G.A., Epitropou V.N. and Giannoutakis K.M. (2007): On the performance of parallel approximate inverse preconditioning using Java multithreading techniques, Applied Mathematics and Computation (AMC) 190, 255-270. |
[31] | Giannoutakis K.M., Gravvanis G.A., Clayton B., Patil A., Enright T. and Morrison J.P. (2007): Matching high performance approximate inverse preconditioning to architectural platforms, The Journal of Supercomputing, 42(2), 145-163. |
[32] | Koutras V.P., Platis A.N., Gravvanis G.A. (2007): Software rejuvenation for resource optimization based on explicit approximate inverse preconditioning, Applied Mathematics and Computation (AMC), 189(1), 163-177. |
[33] | Gravvanis G.A., Giannoutakis K.M. (2006): Distributed finite element normalized approximate inverse preconditioning, Computer Modeling in Engineering and Sciences (CMES), 16(2), 69-82 |
[34] | Koutras V.P., Platis A.N., Gravvanis G.A. (2007): On the optimization of free resources using non-homogeneous markov chains software rejuvenation model, Reliability Engineering and System Safety (RESS) 92, 1724-1732; available online 2006 |
[35] | Gravvanis G.A., Giannoutakis K.M., Lipitakis E.A. (2006): On the numerical solution of singularly perturbed non-linear parabolic and elliptic partial differential equations, HERMIS: An International Journal of Computer Mathematics and its Applications 8, 40-60, (ISSN 1108-7609); http://www.aueb.gr/pympe/hermis/hermis-volume-8/ |
[36] | Giannoutakis K.M., Gravvanis G.A. (2006): Fast normalized explicit approximate inverse preconditioning for solving linear and non-linear finite element systems, Journal of Neural Parallel and Scientific Computations 14 (2/3), 205-224, in memory of Prof. D.J. Evans |
[37] | Gravvanis G.A. (2006): Parallel inverse arrowhead matrix algorithms on symmetric multiprocessor systems, Journal of Neural Parallel and Scientific Computations 14 (2/3), 291-308, in memory of Prof. D.J. Evans |
[38] | Giannoutakis K.M., Gravvanis G.A. and Bekakos M.P. (2005): High performance computations using the internet and grid technology, Journal of Neural Parallel and Scientific Computations 13, 459-478 |
[39] | Giannoutakis K.M. and Gravvanis G.A. (2005): A performance study of normalized explicit finite element approximate inverse preconditioning on uniprocessor and multicomputer systems, Engineering Computations (Inter. J. for Computer-Aided Engineering and Software) 23(3), 192-217. |
[40] | Gravvanis G.A., Giannoutakis K.M. (2005): Normalized Explicit Approximate Inverse Preconditioning for solving 3D boundary value problems on uniprocessor and distributed systems, Int. J. Numerical Methods in Engineering 65(1), 84-110 |
[41] | Gravvanis G.A., Giannoutakis K.M. (2005): Parallel preconditioned conjugate gradient square method based on normalized approximate inverses, Journal of Scientific Programming 13(2), 79-91. |
[42] | Gravvanis G.A., Giannoutakis K.M., Missirlis N. (2004): A distributed preconditioned conjugate gradient method, Parallel Algorithms and Applications 19(2-3), 163-174 |
[43] | Gravvanis G.A., Giannoutakis K.M. (2004): Normalized explicit finite element approximate inverse preconditioning, International Journal of Computers and Structures 82(28), 2377-2388, Pergamon (Elsevier) |
[44] | Gravvanis G.A., Giannoutakis K.M. (2004): On the rate of convergence and computational complexity of normalized implicit preconditioning for solving finite difference equations in three space variables, Inter. J. of Computational Methods 1(2), 367-386. Invited paper in Special Issue of I. J.Comp. Meth. dedicated to Prof. S. Valliapan |
[45] | Gravvanis G.A., Giannoutakis K.M., Bekakos M.P., Efremides O.B. (2004): Parallel and systolic solution of normalized explicit approximate inverse preconditioning, The Journal of Supercomputing 30(2), 77-96. |
[46] | Maglogiannis I., Zafiropoulos I., Platis A., Gravvanis G.A. (2004): Computing the success factors in consistent acquisition and recognition of objects in color digital images by explicit preconditioning, The Journal of Supercomputing 30(2), 179-198. |
[47] | Platis A.N., Gravvanis G.A., Giannoutakis K.M., Lipitakis E.A. (2003): A two-phase cyclic non-homogeneous markov chain performability evaluation by explicit approximate inverses applied to a replicated database system, Journal Mathematical Modelling and Algorithms 2(3), 235-249. |
[48] | Gravvanis G.A. (2003): Explicit preconditioned domain decomposition schemes for solving non-linear boundary value problems, Special Issue on Numerical Methods in Physics, Chemistry and Engineering, Inter. Jour. Comp. & Math. with Applications 45, 263-272. |
[49] | Gravvanis G.A., Giannoutakis K. (2003): Normalized Explicit Finite Element Approximate Inverses, I. J. Differential Equations and Applications 6(3), 253-267. Invited one-hour lecture, 13th International Colloquium on Differential Equations, 18-23 August 2002, Plovdiv, Bulgaria. |
[50] | Gravvanis G.A., Platis A.N. (2003): On the computation of asymptotic availability of cyclic non-homogeneous Markov chains systems by approximate inverse preconditioning, I. J. Computational and Numerical Analysis and Applications 3(1), 27-39. Invited one-hour lecture, 11th International Colloquium on Numerical Analysis and Computer Science with Applications, 12-17 August 2002, Plovdiv, Bulgaria. |
[51] | Platis A.N., Gravvanis G.A. (2003): Modeling the dependability of a class partitioned system and using explicit approximate arrow-structure inverses, I. J. Computational and Numerical Analysis and Applications 3(1), 41-54. Invited one-hour lecture, 11th International Colloquium on Numerical Analysis and Computer Science with Applications, 12-17 August 2002, Plovdiv, Bulgaria. |
[52] | Gravvanis G.A. (2003): On the solution of boundary value problems by using fast generalized approximate inverse banded matrix techniques, Special Issue of The Journal of Supercomputing , 25(2), 119-129. |
[53] | Gravvanis G.A. (2002): Domain decomposition-finite difference approximate inverse preconditioned schemes for solving fourth order equations, Special Issue of the Journal Mathematical Modelling and Algorithms 1(3), 181-192 |
[54] | Gravvanis G.A. (2002): Solving symmetric arrowhead and special tridiagonal linear systems by fast approximate inverse preconditioning, Journal Mathematical Modelling and Algorithms 1(4), 269-282. |
[55] | Gravvanis G.A. (2002): Explicit Approximate Inverse Preconditioning Techniques, Archives of Computational Methods in Engineering 9(4), 371-402. |
[56] | Gravvanis G.A. (2002): Explicit preconditioned domain decomposition schemes, I. J. Computational and Numerical Analysis and Applications 2(1), 19-36. Invited one hour lecture for the 10th International Colloquium on Numerical Analysis and Computer Science with Applications, 12-17 August 2001, Plovdiv, Bulgaria |
[57] | Gravvanis G.A. (2002): Solving special type matrices by explicit approximate inverse preconditioning, I. J. Computational and Numerical Analysis and Applications 2(1), 37-53. |
[58] | Platis A.N., Gravvanis G.A. (2002): Dependability evaluation using explicit approximate inverse preconditioning, I. J. Computational and Numerical Analysis and Applications 2(1), 71-86. |
[59] | Gravvanis G.A. (2002): Solving symmetric arrow-type linear systems by explicit preconditioned schemes, I. J. Differential Equations and Applications 5(4), 325-338. |
[60] | Gravvanis G.A. (2001): The convergence rate and complexity of explicit preconditioned conjugate gradient methods based on approximate inverse banded matrix techniques, Journal of Neural Parallel and Scientific Computations 9(3 and 4), 355-367 |
[61] | Gravvanis G.A. (2001): A fast explicit preconditioned symmetric finite element scheme, Journal of Neural Parallel and Scientific Computations 9(1), 59-66. |
[62] | Gravvanis G.A. (2001): Explicit Approximate Inverse Matrix Techniques, I. J. Differential Equations and Applications 3(3), 285-300. Invited one-hour lecture for the 9th Intern. Colloquium on Numerical Analysis and Computer Science with Applications, 12-17 August 2000, Plovdiv, Bulgaria |
[63] | Gravvanis G.A. (2001): Explicit preconditioned conjugate gradient methods for solving banded matrices, I. J. Differential Equations and Applications 3(4), 409-425. Invited one-hour lecture for the 11th Intern. Colloquium on Differential Equations, 18-23 August 2000, Plovdiv, Bulgaria |
[64] | Gravvanis G.A. (2000): Explicit preconditioned generalized domain decomposition methods, I. J. Applied Mathematics 4(1), 57-71 |
[65] | Gravvanis G.A. (2000): Fast explicit approximate inverses for solving linear and non-linear finite difference equations, I. J. Differential Equations and Applications 1(4), 451-473 |
[66] | Gravvanis G.A. (2000): Generalized approximate inverse preconditioning for solving non-linear elliptic boundary-value problems, I. J. Applied Mathematics 2(11), 1363-1378 |
[67] | Gravvanis G.A. (2000): Domain decomposition approximate inverse matrix techniques, I. J. Differential Equations and Applications 1(3), 323-334 |
[68] | Gravvanis G.A. (2000): Explicit preconditioning conjugate gradient schemes for solving biharmonic equations, Engineering Computations (Inter. J. for Computer-Aided Engineering and Software) 17(2), 154-165. |
[69] | Gravvanis G.A. (2000): Explicit isomorphic iterative methods for solving arrow-type linear systems, Inter. J. Comp. Math. 74(2), 195-206. |
[70] | Gravvanis G.A. (1999): Generalized approximate inverse finite element matrix techniques, Journal of Neural Parallel and Scientific Computations 7(4), 487-500. |
[71] | Gravvanis G.A. (1999): Preconditioned iterative methods for solving 3D boundary value problems, Inter. J. Comp. Math. 71, 117-136. |
[72] | Gravvanis G.A. (1999): Approximate inverse banded matrix techniques, Engineering Computations (Inter. J. for Computer-Aided Engineering and Software) 16(3), 337-346. |
[73] | Gravvanis G. A. (1998): An approximate inverse matrix technique for arrowhead matrices, Inter. J. Comp. Math. 70, 35-45. |
[74] | Gravvanis G.A. (1996): The rate of convergence of explicit approximate inverse preconditioning, Inter. J. Comp. Math. 60, 77-89. |
[75] | Gravvanis G.A., Lipitakis E.A. (1996): An explicit sparse unsymmetric finite element solver, Communications in Numerical Methods in Engineering 12, 21-29. |
[76] | Gravvanis G.A., Lipitakis E.A. (1996): A three dimensional explicit preconditioned solver, I. J. Computer & Mathematics with Applications 32(2), 111-131. |
[77] | Gravvanis G.A. (1995): Explicit preconditioned methods for solving 3D boundary value problems by approximate inverse finite element matrix techniques, I. J. Comp. Math. 56, 77-93. |
[78] | Lipitakis E.A., Gravvanis G.A. (1995): Explicit preconditioned iterative methods for solving large unsymmetric finite element systems, Computing 54 (2), p167-183. |
[79] | Gravvanis G.A. (1994): A three dimensional symmetric linear equation solver, Communications in Numerical Methods in Engineering 10(9), 717-730. |
[80] | Lipitakis E.A., Gravvanis G.A. (1994): Explicit preconditioned methods for computing the inverse and pseudoinverse solutions of unsymmetric finite element systems of linear equations, accepted I. J. Mathematical Modelling and Scientific Computing 4, 886-893. |
[81] | Lipitakis E.A., Gravvanis G.A. (1992): A class of explicit preconditioned conjugate gradient methods for solving large finite element systems, Intern. J. Comp. Math. 44, 189-206. Also In "Preconditioned Iterative methods", Series: Topics in Computer Mathematics 4, ed. D. J. Evans, p255-272, Gordon and Breach Science Publishers, 1994. |
[82] | Lipitakis E.A., Gravvanis G.A. (1992): The convergence rate and complexity of preconditioned iterative methods based on approximate finite element matrix factorization, Bulletin of the Greek Mathematical Society, Special Issue on Computer Mathematics 33, 11-23. |
[83] | Lipitakis E.A., Gravvanis G.A. (1991): The numerical solution of large finite elements by explicit preconditioning semi-direct methods, Bulletin of the Greek Mathematical Society, Special Issue on Computer Mathematics 32, 63-82. Also In "Advances on Computer Mathematics and its Applications, E. A. Lipitakis ed., p237-256, World Scientific, 1993. |