Harri Hakula

Senior University Lecturer

Research outputs

  1. 2019
  2. Published

    On capacity computation for symmetric polygonal condensers

    Bezrodnykh, S., Bogatyrëv, A., Goreinov, S., Grigor'ev, O., Hakula, H. & Vuorinen, M., 1 Dec 2019, In : Journal of Computational and Applied Mathematics. 361, p. 271-282 12 p.

    Research output: Contribution to journalArticleScientificpeer-review

  3. Published

    Asymptotic convergence of spectral inverse iterations for stochastic eigenvalue problems

    Hakula, H. & Laaksonen, M., 1 Jan 2019, In : Numerische Mathematik. 142, 3, p. 577-609 33 p.

    Research output: Contribution to journalArticleScientificpeer-review

  4. Published

    Multiparametric shell eigenvalue problems

    Laaksonen, M. & Hakula, H., 1 Jan 2019, In : Computer Methods in Applied Mechanics and Engineering. 343, p. 721-745 25 p.

    Research output: Contribution to journalArticleScientificpeer-review

  5. Published

    The Conjugate Function Method and Conformal Mappings in Multiply Connected Domains

    Hakula, H., Quach, T. & Rasila, A., 2019, In : SIAM Journal on Scientific Computing. 41, 3, p. A1753-A1776 24 p.

    Research output: Contribution to journalArticleScientificpeer-review

  6. 2018
  7. Published

    Cylindrical Shell with Junctions: Uncertainty Quantification of Free Vibration and Frequency Response Analysis

    Laaksonen, M., Hakula, H. & Kaarnioja, V., 2 Dec 2018, In : Shock and Vibration. 2018, 16 p., 5817940.

    Research output: Contribution to journalArticleScientificpeer-review

  8. Published

    An a posteriori estimator of eigenvalue/eigenvector error for penalty-type discontinuous Galerkin methods

    Giani, S., Grubisic, L., Hakula, H. & Ovall, J. S., Feb 2018, In : Applied Mathematics and Computation. 319, p. 562-574

    Research output: Contribution to journalArticleScientificpeer-review

  9. Published

    Conformal modulus and planar domains with strong singularities and cusps

    Hakula, H., Rasila, A. & Vuorinen, M., 1 Jan 2018, In : Electronic Transactions on Numerical Analysis. 48, p. 462-478 17 p.

    Research output: Contribution to journalArticleScientificpeer-review

  10. Published
  11. Published

    Spatial Mappings for Planning and Optimization of Cellular Networks

    G., D. G., Hakula, H., Rasila, A. & Hamalainen, J., 2018, In : IEEE-ACM TRANSACTIONS ON NETWORKING. 26, 1, p. 175-188 14 p.

    Research output: Contribution to journalArticleScientificpeer-review

  12. 2017
  13. Published

    Stochastic Galerkin approximation of the Reynolds equation with irregular film thickness

    Gustafsson, T., Hakula, H. & Leinonen, M., Oct 2017, In : Computers and Mathematics with Applications. 74, 7, p. 1590-1606

    Research output: Contribution to journalArticleScientificpeer-review

  14. Published

    A Posteriori Estimates Using Auxiliary Subspace Techniques

    Hakula, H., Neilan, M. & Ovall, J. S., 1 Jul 2017, In : JOURNAL OF SCIENTIFIC COMPUTING. 72, 1, p. 97-127 31 p.

    Research output: Contribution to journalArticleScientificpeer-review

  15. 2015
  16. Published

    A Maximum Cluster Algorithm for Checking the Feasibility of Dial-A-Ride Instances

    Hame, L. & Hakula, H., 2015, In : TRANSPORTATION SCIENCE. 49, 2, p. 295-310

    Research output: Contribution to journalArticleScientificpeer-review

  17. Published

    Approximate methods for stochastic eigenvalue problems

    Hakula, H., Kaarnioja, V. & Laaksonen, M., 2015, In : Applied Mathematics and Computation. 267, p. 664-681

    Research output: Contribution to journalArticleScientificpeer-review

  18. Published

    Hybrid Stochastic Finite Element Method for Mechanical Vibration Problems

    Hakula, H. & Laaksonen, M., 2015, In : Shock and Vibration. 2015, p. 812069

    Research output: Contribution to journalArticleScientificpeer-review

  19. 2014
  20. Published

    Application of stochastic Galerkin FEM to the complete electrode model of electrical impedance tomography

    Leinonen, M., Hakula, H. & Hyvonen, N., 2014, In : Journal of Computational Physics. 269, 1, p. 181-200

    Research output: Contribution to journalArticleScientificpeer-review

  21. Published

    hp-boundary layer mesh sequences with applications to shell problems

    Hakula, H., 2014, In : Computers and Mathematics with Applications. 67, 4, p. 899-917

    Research output: Contribution to journalArticleScientificpeer-review

  22. Published

    On hp-adaptive solution of thin shells of revolution

    Hakula, H. & Tuominen, T., 2014, In : IOP Conference Series: Materials Science and Engineering. 10, 1, 10 p., 012163.

    Research output: Contribution to journalArticleScientificpeer-review

  23. Published

    Reconstruction algorithm based on stochastic Galerkin finite element method for electrical impedance tomography

    Hakula, H., Hyvönen, N. & Leinonen, M., 2014, In : Inverse Problems. 30, 6, p. 065006

    Research output: Contribution to journalArticleScientificpeer-review

  24. Published

    Surface plasmon resonances on cones and wedges

    Kettunen, H., Chesnel, L., Hakula, H., Wallén, H. & Sihvola, A., 2014, 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (Metamaterials 2014), Copenhagen, Denmark, 24-30 August 2014. Copenhagen, Denmark, p. 163-165 3 p.

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

  25. 2013
  26. Published

    Mathematica implementation of the high order finite element method applied to eigenproblems

    Hakula, H. & Tuominen, T., May 2013, In : COMPUTING: ARCHIVES FOR SCIENTIFIC COMPUTING. 95, SUPPL.1

    Research output: Contribution to journalArticleScientificpeer-review

  27. Published

    Dynamic journeying under uncertainty

    Häme, L. & Hakula, H., 16 Mar 2013, In : European Journal of Operational Research. 225, 3, p. 455-471 17 p.

    Research output: Contribution to journalArticleScientificpeer-review

  28. Published

    Computation of exterior moduli of quadrilaterals

    Hakula, H., Rasila, A. & Vuorinen, M., 2013, In : Electronic Transactions on Numerical Analysis. 40, p. 436-451

    Research output: Contribution to journalArticleScientificpeer-review

  29. Published

    Dynamic journeying in scheduled networks

    Hame, L. & Hakula, H., 2013, In : IEEE Transactions on Intelligent Transportation Systems. 14, 1, p. 360-369 10 p., 6293897.

    Research output: Contribution to journalArticleScientificpeer-review

  30. Published

    Kokonaissuunnittelu Aalto-yliopistossa

    Hakula, H., Karinen, R., Kauranne, H., Liinaharja, M., Mälkki, H., Paatero, J. & Virtanen, T., 2013, Opettajan muuttuvat roolit - yhdessä yhteisölliseen opetuksen kehittämiseen. Lampinen, M. (ed.). Helsinki: Aalto ARTS Books, p. 73

    Research output: Chapter in Book/Report/Conference proceedingChapterProfessional

  31. Published

    Routing by ranking: A link analysis method for the constrained dial-A-ride problem

    Häme, L. & Hakula, H., 2013, In : Operations Research Letters. 41, 6, p. 664-669 6 p.

    Research output: Contribution to journalArticleScientificpeer-review

  32. 2012
  33. Published

    Conjugate function method for numerical conformal mappings

    Hakula, H., Quach, T. & Rasila, A., 2012, In : Journal of Computational and Applied Mathematics. 237, p. 340-353

    Research output: Contribution to journalArticleScientificpeer-review

  34. Published

    Fine-tuning electrode information in electrical impedance tomography

    Darde, J., Hakula, H., Hyvönen, N. & Staboulis, S., 2012, In : Inverse Problems and Imaging. 6, 6, p. 399-421

    Research output: Contribution to journalArticleScientificpeer-review

  35. Published

    Kokonaissuunnittelu, linjakkaan ja oppimislähtöisen opetuksen peruskivi

    Hakula, H., Karinen, R., Kauranne, H., Mälkki, H., Paatero, J. & Virtanen, T., 2012, Peda-Forum-päivät, Aalto-yliopisto, Otaniemi, 21.- 22.8.2012. Espoo, Otaniemi: Aalto ARTS Books, p. 51

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientific

  36. Published

    On the hp-adaptive solution of complete electrode model forward problems of electrical impedance tomography

    Hakula, H., Hyvönen, N. & Tuominen, T., 2012, In : Journal of Computational and Applied Mathematics. 236, 236, p. 4645-4659

    Research output: Contribution to journalArticleScientificpeer-review

  37. 2011
  38. Published

    Aktivoiviin opetusmenetelmiin perustuvat matematiikan opetuskokeilut Aalto-yliopistossa

    Havola, L., Majander, H., Hakula, H., Alestalo, P. & Rasila, A., 2011, Tuovi 9: Interaktiivinen tekniikka koulutuksessa 2011 -konferenssin tutkijatapaamisen artikkelit. Viteli, J. & Östman, A. (eds.). Tampere, p. 5-9

    Research output: Chapter in Book/Report/Conference proceedingChapterScientificpeer-review

  39. Published

    On Moduli of Rings and Quadrilaterals: Algorithms and Experiments

    Hakula, H., Rasila, A. & Vuorinen, M., 2011, In : SIAM Journal on Scientific Computing. 33, 1, p. 279-302

    Research output: Contribution to journalArticleScientificpeer-review

  40. Published

    Sweep data of electrical impedance tomography

    Hakula, H., Harhanen, L. & Hyvönen, N., 2011, In : Inverse Problems. 27, 11, p. 115006

    Research output: Contribution to journalArticleScientificpeer-review

  41. Published

    The Traveling Salesman Problem with Differential Neighborhoods

    Häme, L., Hyytiä, E. & Hakula, H., 2011, The 27th European Workshop on Computational Geometry (EuroCG) , March 28-30, 2011, Antoniushaus Morschach, Switzerland.. p. 51-54

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

  42. 2009
  43. Published

    Conditionally Gaussian Hypermodels for Cerebral Source Localization

    Calvetti, D., Hakula, H., Pursiainen, S. & Somersalo, E., 2009, In : SIAM JOURNAL ON IMAGING SCIENCES. 2, 3, p. 879-909

    Research output: Contribution to journalArticleScientificpeer-review

  44. Published

    On computation of test dipoles for factorization method

    Hakula, H. & Hyvönen, N., 2009, In : BIT. 49, p. 75-91

    Research output: Contribution to journalArticleScientificpeer-review

  45. Published

    On moduli of rings and quadrilaterals: algorithms and experiments

    Hakula, H., Rasila, A. & Vuorinen, M., 2009, Espoo, p. 21, (Helsinki University of Technology, Institute of Mathematics Research Reports; no. A575).

    Research output: Working paperProfessional

  46. Published

    On the asymptotic behaviour of shells of revolution in free vibration

    Artioli, E., Beirao da Veiga, L., Hakula, H. & Lovadina, C., 2009, In : COMPUTATIONAL MECHANICS. 44, 1, p. 45-60

    Research output: Contribution to journalArticleScientificpeer-review

  47. 2008
  48. Published

    Conditionally Gaussian hypermodels for source localization in brain imaging

    Calvetti, D., Hakula, H., Pursiainen, S. & Somersalo, E., 2008, In : arXiv.org.

    Research output: Contribution to journalArticleProfessional

  49. Published

    Free vibrations for some Koiter shells of revolution

    Artioli, E., de Veiga, L. B., Hakula, H. & Lovadina, C., 2008, In : Applied Mathematics Letters. 21, 12, p. 1245-1248

    Research output: Contribution to journalArticleScientificpeer-review

  50. Published

    Point load on a shell

    Niemi, A. H., Pitkäranta, J. & Hakula, H., 2008, Numerical mathematics and advanced applications. Berlin, p. 819-826

    Research output: Chapter in Book/Report/Conference proceedingChapterScientificpeer-review

  51. Published

    The factorization method applied to the complete electrode model of impedance tomography

    Lechleiter, A., Hyvönen, N. & Hakula, H., 2008, In : SIAM Journal on Applied Mathematics. 68, 4, p. 1097-1121

    Research output: Contribution to journalArticleScientificpeer-review

  52. Published

    Two noniterative algorithms for locating inclusions using one electrode measurement of electric impedance tomography

    Hakula, H. & Hyvonen, N., 2008, In : Inverse Problems. 24, 5, p. 055018

    Research output: Contribution to journalArticleScientificpeer-review

  53. 2007
  54. Published

    Benchmark computations on point-loaded shallow shells: Fourier vs.FEM

    Niemi, A. H., Pitkäranta, J. & Hakula, H., 2007, In : Computer Methods in Applied Mechanics and Engineering. 196, 4-6, p. 894-907

    Research output: Contribution to journalArticleScientificpeer-review

  55. Published

    Numerical implementation of the factorization method within the complete electrode model of electrical impedance tomography

    Hyvönen, N., Hakula, H. & Pursiainen, S., 2007, In : Inverse Problems and Imaging. 1, 2, p. 299-317

    Research output: Contribution to journalArticleScientificpeer-review

  56. 2006
  57. Published

    A High-order Finite Element Method for Electical Impedance Tomography

    Pursiainen, S. & Hakula, H., 2006, In : PIERS Online. 2, 3, p. 260-264

    Research output: Contribution to journalArticleScientificpeer-review

  58. 2005
  59. Published

    A benchmark study: MITC4-S and boundary layer-type deformations

    Niemi, A., Pitkäranta, J. & Hakula, H., 2005, The 18th Nordic Seminar on Computational Mechanics, Silja Serenade, 27.-30.10.2005. Paavola, J. & Freund, J. (eds.). Helsinki, p. 71-74 (Rakenteiden mekaniikka; vol. 38, no. 3).

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

  60. 2004
  61. Published

    On sensitive shell under different loadings

    Havu, V. & Hakula, H., 2004, 4th European Congress on Computational Methods in Applied Sciences and Engineering, ECCOMAS 2004, Jyväskylä, 2004. Neittaanmäki, P., Rossi, T., Korotov, S., Onate, E., Periaux, J. & Knörzer, D. (eds.). Jyväskylä: ECCOMAS, Jyväskylän yliopisto

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

  62. 2003
  63. Published

    A benchmark study of elliptic and hyperbolic shells of revolution

    Havu, V., Hakula, H. & Tuominen, T., 2003, Espoo, p. 15, (Helsinki University of Technology Institute of Mathematics Research Reports; no. A456).

    Research output: Working paperProfessional

  64. Published

    MITC4-kuorielementin konvergenssiominaisuudet

    Havu, V. & Hakula, H., 2003, VIII Suomen mekaniikkapäivät, Espoo 12.-13.6.2003. Råbäck, P., Santaoja, K. & Stenberg, R. (eds.). Espoo: TKK, p. 533-539

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

  65. 2002
  66. Published

    Convergence of the MITC4 Shell Element

    Pitkäranta, J., Hakula, H., Havu, V. & Malinen, M., 2002, The Fifth World Congress on Computational Mechanics (WCCM V), July 7-12, Vienna, Austria. Mang, M. A., Rammerstorfer, F. G. & Eberhardsteiner, J. (eds.). Wien: Vienna University of Technology

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

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