Timo Lähivaara

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 / 15th European Conference on Antennas and Propagation: EuCAP 2021, 22-26 March 2021, Düsseldorf, Germany. 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

Yadav, Rahul; Omrani, Adel; Link, Guido; Vauhkonen, Marko; Lähivaara, Timo. 2021. Microwave Tomography Using Neural Networks for Its Application in an Industrial Microwave Drying System Sensors 21 20: 6919. 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 21 4: 737-777. 2021

Omrani, Adel; Yadav, Rahul; Link, Guido; Lähivaara, Timo; Vauhkonen, Marko; Jelonnek, John. 2021. An Electromagnetic Time-Reversal Imaging Algorithm for Moisture Detection in Polymer Foam in an Industrial Microwave Drying System Sensors 21 21: 7409. 2021

Using Stochastic Geometry and Sequential Spatial Point Process Model for Estimation of Stand Density Based on ALS-ITD. Mehtätalo, L., Yazigi, A., Kansanen, K., Packalen, P., Lähivaara, T., Maltamo, M., Myllymäki, M. and Penttinen, A / Proceedings of the SilviLaser Conference 2021. 2021. 2021

Microwave Tomography for Moisture Level Estimation Using Bayesian Framework. Yadav, Rahul; Omran, Adel; Vauhkonen, Marko; Link, Guido; Lahivaara, Timo / 15th European Conference on Antennas and Propagation: EuCAP 2021, 22-26 March 2021, Düsseldorf, Germany. 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

Koponen, Janne; Lähivaara, Timo; Kaipio, Jari; Vauhkonen, Marko. 2021. Model reduction in acoustic inversion by artificial neural network Journal of the acoustical society of america 150 5: 3435-3444. 2021

Hosseini, Marzieh; Kaasinen, Anna; Link, Guido; Lähivaara, Timo; Vauhkonen, Marko. 2021. Electrical Capacitance Tomography to Measure Moisture Distribution of Polymer Foam in a Microwave Drying Process IEEE sensors journal 21 16: 18101-18114. 2021

Hosseini, Marzieh; Kaasinen, Anna; Aliyari Shoorehdeli, Mahdi; Link, Guido; Lähivaara, Timo; Vauhkonen, Marko. 2021. System Identification of Conveyor Belt Microwave Drying Process of Polymer Foams Using Electrical Capacitance Tomography Sensors 21 21: 7170. 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

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

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

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

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

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

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

Lähivaara Timo. 2017. Characterization of porous materials using full-waveform inversion. In: - (ed.) , Inverse Days. 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

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