TIMO LäHIVAARA

Contact info

Keywords

Releases in SoleCRIS

• CRIS Julkaisut / Publications @SoleCRIS

RESEARCH GROUPS - UEF

• 
  Computational Physics and Inverse Problems research group

Links

• Link Kotisivu / Homepage

Publications

• A Combined Microwave Imaging Algorithm for Localization and Moisture Level Estimation in Multilayered Media. Omrani, Adel; Yadav, Rahul Link, Guido; Vauhkonen, Marko; Lahivaara, Timo; Jelonnek, John / 2021 15th European Conference on Antennas and Propagation (EuCAP). 2021. 2021
• LQR Control of Moisture Distribution in Microwave Drying Process Based on a Finite Element Model of Parabolic PDEs. Hosseini, Marzieh; Kaasinen, Anna; Link, Guido; Lähivaara, Timo; Vauhkonen, Marko. IFAC-PapersOnLine. 2021. 2021
• Microwave Tomography for Moisture Level Estimation Using Bayesian Framework. Yadav, Rahul; Omran, Adel; Vauhkonen, Marko; Link, Guido; Lahivaara, Timo / 2021 15th European Conference on Antennas and Propagation (EuCAP). 2021. 2021
• Nissinen, Tomi; Suoranta, Sanna; Saavalainen, Taavi; Sund, Reijo; Hurskainen, Ossi; Rikkonen, Toni; Kröger, Heikki; Lähivaara, Timo; Väänänen, Sami P. 2021. Detecting pathological features and predicting fracture risk from dual-energy X-ray absorptiometry images using deep learning Bone reports 14: 101070. 2021
• Ward, Nick Dudley; Eveson, Simon; Lähivaara, Timo. 2021. A Discontinuous Galerkin Method for Three-Dimensional Poroelastic Wave Propagation: Forward and Adjoint Problems Computational methods and function theory [Published online 18 Jun 2021]: 1-41. 2021
• Cuenca, J.; Göransson, P.; De Ryck, L.; Lähivaara, T.. 2021. Deterministic and statistical methods for the characterisation of poroelastic media from multi-observation sound absorption measurements Mechanical systems and signal processing 2022; 163: 108186. 2021
• Lähivaara, T; Yadav, R; Link, G; Vauhkonen, M. 2020. Estimation of moisture content distribution in porous foam using microwave tomography with neural networks IEEE Transactions on computational imaging 6: 1351-1361. 2020
• Microwave tomography for estimating moisture content distribution in porous foam using neural networks. Yadav, Rahul; Vauhkonen, Marko; Link, Guido; Betz, Stefan; Lähivaara, Timo / Proceedings of 14th European Conference on Antennas and Propagation, EuCAP 2020. 2020. 2020
• Muhumuza, Kenneth; Roininen, Lassi; Huttunen, Janne M J; Lähivaara, Timo. 2020. A Bayesian-based approach to improving acoustic Born waveform inversion of seismic data for viscoelastic media Inverse problems 36 7: 075010. 2020
• Material parameter identification of coupled resonant systems using impedance tubes. Cuenca, Jacques; De Ryck, Laurent; Göransson, Peter; Lähivaara, Timo / Proceedings of the 26th International Congress on Sound and Vibration: Montreal bridges, 2019. 2019. 2019
• Niskanen, Matti; Duclos, Aroune; Dazel, Olivier; Groby, Jean-Philippe; Kaipio, Jari; Lähivaara, Timo. 2019. Estimating the material parameters of an inhomogeneous poroelastic plate from ultrasonic measurements in water Journal of the acoustical society of america 146 4: 2596-2607. 2019
• Niskanen, Matti; Dazel, Olivier; Groby, Jean-Philippe; Duclos, Aroune; Lähivaara, Timo. 2019. Characterising poroelastic materials in the ultrasonic range - A Bayesian approach Journal of sound and vibration 456: 30-48. 2019
• Lähivaara, Timo; Malehmir, Alireza; Pasanen, Antti; Kärkkäinen, Leo; Huttunen, Janne M J; Hesthaven, Jan S. 2019. Estimation of groundwater storage from seismic data using deep learning Geophysical prospecting 67 8: 2115-2126. 2019
• Kansanen, Kasper; Vauhkonen, Jari; Lähivaara, Timo; Seppänen, Aku; Maltamo, Matti; Mehtätalo, Lauri. 2019. Estimating forest stand density and structure using Bayesian individual tree detection, stochastic geometry, and distribution matching Isprs journal of photogrammetry and remote sensing 152: 66-78. 2019
• Kaipio, JP; Huttunen, T; Luostari, T; Lähivaara, T; Monk, PB. 2019. A Bayesian approach to improving the Born approximation for inverse scattering with high-contrast materials Inverse problems 35 8: 084001. 2019
• Göransson, Peter; Cuenca, Jacques; Lähivaara, Timo. 2019. Parameter estimation in modelling frequency response of coupled systems using a stepwise approach Mechanical systems and signal processing 126: 161-175. 2019
• Bayesian approach to single-tree detection in airborne laser scanning - use of training data for prior and likelihood modeling. Luostari, Teemu; Lähivaara, Timo; Packalen, Petteri; Seppänen, Aku. Journal of Physics: Conference Series. 2018. 2018
• Inverse parameter estimation in resonant, coupled fluid-structure interaction problems. Cuenca, J; Göransson, P; De Ryck, L; Lähivaara, T / Proceedings of ISMA2018 International Conference on Noise and Vibration Engineering USD2018 International Conference on Uncertainty in Structural Dynamics. 2018. 2018
• Joutsensaari, Jorma; Ozon, Matthew; Nieminen, Tuomo; Mikkonen, Santtu; Lähivaara, Timo; Decesari, Stefano; Facchini, M Cristina; Laaksonen, Ari; Lehtinen, Kari EJ. 2018. Identification of new particle formation events with deep learning ATMOSPHERIC CHEMISTRY AND PHYSICS 18 13: 9597-9615. 2018
• Lähivaara, Timo; Kärkkäinen, Leo; Huttunen, Janne MJ; Hesthaven, Jan S. 2018. Deep convolutional neural networks for estimating porous material parameters with ultrasound tomography. Journal of the Acoustical Society of America 143: 1148. 2018
• Muhumuza, Kenneth; Jakobsen, Morten; Luostari, Teemu; Lähivaara, Timo. 2018. Seismic monitoring of CO2 injection using a distorted Born T-matrix approach in acoustic approximation Journal of seismic exploration 27 5: 403-431. 2018
• Niskanen M, Groby J-P, Duclos A, Dazel O, Huttunen T, Lähivaara T. 2018. Characterization of rigid frame porous materials from impedance tube measurements. In: - (ed.) EU-Cost action DENORMS (Designs for Noise Reducing Materials and Structures). s. -. 2018
• Pulkki, Ville; Lähivaara, Timo; Huhtakallio, Ilkka. 2018. Effects of flow gradients on directional radiation of human voice. Journal of the Acoustical Society of America 143 2: 1173-1181. 2018
• Varvia, Petri; Lähivaara, Timo; Maltamo, Matti; Packalen, Petteri; Seppanen, Aku. 2018. Gaussian Process Regression for Forest Attribute Estimation From Airborne Laser Scanning Data IEEE transactions on geoscience and remote sensing 2019; 57 6: 3361-3369. 2018
• Lähivaara Timo. 2017. Characterization of porous materials using full-waveform inversion. In: - (ed.) , Inverse Days. 2017
• Niskanen M, Groby J-P, Duclos A, Dazel O, Le Roux JC, Poulain N, Huttunen T, Lähivaara T. 2017. Deterministic and statistical characterization of rigid frame porous materials from impedance tube measurements. Journal of the Acoustical Society of America 142 4: 2407-2418. 2017
• Pulkki Ville, Huhtakallio Ilkka, Lähivaara Timo. 2017. Tuulen vaikutus huutajan suuntakuvioon. In: Lokki Tapio (ed.) , Akustiikkapäivät 2017. Akustinen Seura ry. Akustiikkapäivät 2017. s. 233-238. 2017
• Lähivaara Timo, Niskanen Matti, Luostari Teemu, Huttunen Tomi. 2017. Huokoisen väliaineen ominaisuudet - jakaumia ja epävarmuuksia. In: Lokki Tapio (ed.) , Akustiikkapäivät 2017. Akustinen seura. Akustiikkapäivät 2017. s. 329-334. 2017
• Dudley Ward NF, Lähivaara T, Eveson S. 2017. A discontinuous Galerkin method for poroelastic wave propagation: The two-dimensional case. JOURNAL OF COMPUTATIONAL PHYSICS 350: 690-727. 2017
• Lähivaara T, Pasanen A, Malehmir A, Kaipio J. 2017. Full-waveform Seismic Inversion for Estimating Aquifer Dimensions and Hydrologic Parameters. In: - (ed.) , The proceedings of the 23rd European Meeting of Envirionmental and Engineering Geophysics 2017. 2017
• Kansanen Kasper, Vauhkonen Jari, Lähivaara Timo, Mehtätalo Lauri. 2016. Stand density estimators based on individual tree detection and stochastic geometry. CANADIAN JOURNAL OF FOREST RESEARCH 46 11: 1359-1366. 2016
• Lähivaara Timo. 2016. Puhtaan veden turvaaminen vaatii jatkossa roimasti kekseliäisyyttä. Savon Sanomat. 10.08.2016. s.A5 2016
• Lähivaara Timo. 2016. Video: Estimation of volume of groundwater in an aquifer based on seismic measurements. 2016
• Niskanen M, Groby J-P, Duclos A, Dazel O, Le Roux J-C, Poulain N, Lähivaara T, Huttunen T. 2016. Inverse acoustic characterization of rigid frame porous materials from impedance tube measurements. In: Federico Miyara, Ernesto Accolti, Vivian Pasch, Nilda Vechiatti (ed.) , Proceedings of The 22nd International Congress on Acoustics. s. Paper ICA2016-533. 2016
• Niskanen M, Groby J-P, Duclos A, Dazel O, Le Roux J-C, Poulain N, Lähivaara T, Huttunen T. 2016. Inverse acoustic characterization of rigid frame porous materials from impedance tube measurements. In: Kropp Wolfgang, von Estorff Otto, Schulte-Fortkamp Brigitte (ed.) , Proceedings of the INTER-NOISE 2016. 45th International Congress and Exposition on Noise Control Engineering. German Acoustical Society (DEGA). s. 4124-4129. 2016
• Varvia Petri, Lähivaara Timo, Maltamo Matti, Packalen Petteri, Tokola Timo, Seppänen Aku. 2016. Uncertainty Quantification in ALS-Based Species-Specific Growing Stock Volume Estimation. IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING 2017; 55 3: 1671-1681. 2016
• Vauhkonen Marko, Tarvainen Tanja, Lähivaara Timo. 2016. Inverse Problems. In: Seppo Pohjolainen (ed.) Mathematical Modelling. Springer. s. 207-227. 2016
• Cui Tinagang, Ward Nicholas Dudley, Eveson Simon, Lähivaara Timo. 2015. Pragmatic Approach to Calibrating Distributed Parameter Groundwater Models from Pumping Test Data Using Adaptive Delayed Acceptance MCMC. Journal of Hydrologic Engineering 2016; 21 1: -. 2015
• Lähivaara Timo, Dudley Ward Nicholas F., Huttunen Tomi, Rawlinson Zara, Kaipio Jari P.. 2015. Estimation of aquifer dimensions from passive seismic signals in the presence of material and source uncertainties. Geophysical Journal International 200 3: 1662-1675. 2015
• Lähivaara Timo, Niinimäki Kati. 2015. Statistical Inverse Problem and Numerical Simulation Related to Electromagnetic Wave Propagation. In: Arens Tilo (ed.) , The 12th International Conference on Mathematical and Numerical Aspects of Wave Propagation, July 20-24 2015. -. s. 360-361. 2015
• Varvia Petri, Lähivaara Timo, Maltamo Matti, Packalén Petteri, Tokola Timo, Seppänen Aku. 2015. Uncertainty quantification in ALS-based species-specific growing stock volume estimation. In: S. Durrieu, and C. Véga (ed.) Proceedings of SilviLaser 2015, 14th conference on Lidar Applications for Assessing and Managing Forest Ecosystems, September 28-30, 2015 - La Grande Motte, France. s. 134-136. 2015
• Lähivaara Timo, Dudley Ward Nicholas F., Huttunen Tomi, Kaipio Jari P.. 2014. Statistical inversion approach to estimating water content in an aquifer from seismic data. 2289-2289. 2014
• Lähivaara Timo, Seppänen Aku, Kaipio Jari, Vauhkonen Jari, Korhonen Lauri, Tokola Timo, Maltamo Matti. 2014. Bayesian Approach to Tree Detection Based on Airborne Laser Scanning Data. IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING 52 5: 2690-2699. 2014
• Lähivaara Timo, Dudley Ward Nicholas F., Huttunen Tomi, Kaipio Jari P., Niinimäki Kati. 2014. Estimating pipeline location using ground-penetrating radar data in the presence of model uncertainties. INVERSE PROBLEMS 30 11: 114006. 2014
• Lähivaara Timo, Dudley Ward Nicholas F, Huttunen Tomi, Koponen Janne, Kaipio Jari P. 2014. Estimation of aquifer dimensions from passive seismic signals with approximate wave propagation models. INVERSE PROBLEMS 30 1: 015003. 2014
• Lähivaara T, Kaipio JP, Dudley Ward NF, Huttunen T. 2013. Seisminen menetelmä pohjavesivarojen arviointiin: Hiipakka M, Tahvanainen H, Lokki T, Akustiikkapäivät. Akustiikkapäivät. 105-109. 2013
• Lähivaara T, Kaipio JP, Dudley Ward NF, Huttunen T. 2013. Simulation study on seismic monitoring of aquifers: -, Proceedings of Meetings on Acoustics. Proceedings of meetings on acoustics Acoustical Society of America 19. -. 2013
• Lähivaara T, Huttunen T. 2012. High-order numerical methods for underwater acoustic scattering: J. Eberhardsteiner, European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS 2012). 1528-1541. 2012
• Lähivaara T, Seppänen A, Kaipio J.P, Vauhkonen J, Korhonen L, Tokola T, Maltamo M. 2012. Bayesian approach to tree detection with airborne laser scanning: -, IEEE International Geoscience and Remote Sensing Symposium (IGARSS 2012). 1641-1644. 2012
• Simonaho Simo-Pekka, Lähivaara Timo, Huttunen Tomi. 2012. Modeling of acoustic wave propagation in time-domain using the discontinuous Galerkin method - A comparison with measurements. APPLIED ACOUSTICS 73 2: 173-183. 2012
• Lähivaara T, Huttunen T. 2012. Akustisen aallon sironta elastisesta kappaleesta. In: Koivukora, H. ja Malaska, M. (toim.) (ed.) , Proceedings of the 11th Finnish Mechanics Days. ss. 45-48. 2012
• Lähivaara T, Huttunen T. 2012. Akustisen aallon sironta elastisesta kappaleesta Rakenteiden mekaniikka (Journal of Structural Mechanics) 45 1: 34-44. 2012
• Lähivaara T, Buffa A, Huttunen T.. 2012. High-order numerical methods for large-scale wave problems. In: Monfardini S. (ed.) , Science and Supercomputing in Europe, research highlights 2011. ss. -. 2012
• Lähivaara T, Huttunen T. 2011. A non-uniform basis order for the discontinuous Galerkin method of the acoustic and elastic wave equations. APPLIED NUMERICAL MATHEMATICS 61: 473-486. 2011
• Lähivaara T, Vázquez R, Buffa A. 2011. GeoPDEs: geopdes_acoustics. 2011
• Lähivaara T & Huttunen T. 2010. A non-uniform basis order for the discontinuous Galerkin method of the 3D dissipative wave equation with perfectly matched layer. JOURNAL OF COMPUTATIONAL PHYSICS 229 13: 5144-5160. 2010
• Lähivaara T. 2010. Discontinuous Galerkin method for time-domain wave problems. Publications of the University of Eastern Finland. Dissertations in Forestry and Natural Sciences. 2010
• Lähivaara T, Huttunen T, Niskanen H. 2009. Elastisten aaltopulssien mallintaminen: Mäkinen R, Neittaanmäki P, Tuovinen T, Valpe K, Proceedings of the 10th Finnish Mechanics Days X Suomen Mekaniikkapäivät.Deptartment of Mathematical Information Technology. Reports of the Department of mathematical information technology. Series A. Collections. 34-42. 2009
• Lähivaara T, Huttunen T. 2009. Discontinuous Galerkin method for solving the 3D acoustic wave equation. In: Barucq H, Bonnet-Bendhia A-S, Cohen G, Diaz J, Ezziani A, Joly P (ed.) , The 9th international conference on mathematical and numerical aspects of waves propagation.INR en Informatique et en Automatique Magique-3D & Poems. ss. 162-163. 2009
• Lähivaara T, Huttunen T. 2009. Epäjatkuva Galerkinin menetelmä elastiselle aaltoyhtälölle, Akustiikkapäivät 2009.Akustinen seura. 210-215. 2009
• Lähivaara T, Malinen M, Kaipio JP & Huttunen T. 2008. Computational aspects of the discontinuous Galerkin method for the wave equation. JOURNAL OF COMPUTATIONAL ACOUSTICS 16: 507-530. 2008