Martin Ouwerkerk

8 juni t/m 23 juni

Deelname aan de retraite 'Nurturing the Fire' van de Orde van Interzijn in Plum Village, Frankrijk

19 september 2026

Lezing over de 5 aandachtstrainingen op het Reiki Festival in Vianen

Luminescence of doped and undoped aluminium tungstate, scandium tungstate, and lutetium tungstate

G. Blasse, M. Ouwerkerk

Journal of The Electrochemical Society 127(2):429 • januari 1980

Some observations on the luminescence of rare-earth molybdates with β-Gd2(MoO4)3 structure

Martin Ouwerkerk, Frans Kellendonk, George Blasse

Journal of the Chemical Society Faraday Transactions 2 Molecular and Chemical Physics 78(3):603 • januari 1982

DOI: 10.1039/F29827800603

High-temperature conductivity of fluorite-type solid solutions barium uranium fluoride (Ba1-xUxF2+2x) and lead uranium fluoride (Pb1-xUxF2+2x)

Martin Ouwerkerk, Joop Schoonman

Studies in Inorganic Chemistry 3 • januari 1983

Conductivity and specific heat of Fluorites M1−xUxF2+2x (M = Ca, Sr, Ba and Pb)

Martin Ouwerkerk, E.M. Kelder, Joop Schoonman, J.C. van Miltenburg

Solid State Ionics 9-10(DEC):531-536 • december 1983

DOI: 10.1016/0167-2738(83)90290-4

The critical temperature in fluorite-type solid solutions

Joop Schoonman, Martin Ouwerkerk

Solid State Ionics 12 • maart 1984

DOI: 10.1016/0167-2738(84)90181-4

TSDC AND NEUTRON SCATTERING MEASUREMENTS ON Ba1-xLaxF2+x AND Ba1-xUxF2+2x SOLID SOLUTIONS

Martin Ouwerkerk, F.F. Veldkamp, N.H. Andersen, P.J. Schoonman

Solid State Ionics 16:125-130 • 1985

Crystal growth and characterisation of fluorite-type solid solutions M1−xUxF2+2x (M = Ca, Sr, Ba, and Pb)

Martin Ouwerkerk

Materials Research Bulletin 20(5):501-509 • mei 1985

DOI: 10.1016/0025-5408(85)90104-7

TSDC and Neutron-Scattering Measurements on Ba1-xLaxF2+x and Ba1-UxF2+2x Solid-Solutions

Martin Ouwerkerk, F.F. Veldkamp, Niels Hessel Andersen, Joop Schoonman

Solid State Ionics 16(1-4) • juni 1985

DOI: 10.1016/0167-2738(85)90033-5

Conformational aspects of meso-tartaric acid. IX. Structure of (+)-(R)-α-methylbenzylammonium meso-tartrate monohydrate

W. Moerman, Martin Ouwerkerk, J. Kroon

Acta Crystallographica Section C: Structural Chemistry C41(8):1205 • augustus 1985

DOI: 10.1107/S0108270185007156

The ionic conductivity and defect structure of fluorite-type solid solutions Ba1-xUxF2+2x

Martin Ouwerkerk

PhD-proefschrift, Universiteit Utrecht • 1985

Link: https://utrechtuniversity.on.worldcat.org/oclc/63834974

Neutron diffraction and TSDC on Ba1−xUxF2+2x solid electrolytes

Martin Ouwerkerk, Niels Hessel Andersen, F.F. Veldkamp, Joop Schoonman

Solid State Ionics 18-19 • januari 1986

DOI: 10.1016/0167-2738(86)90287-0

Thermally Stimulated Depolarization Current Measurements on Ba1-xLaxf2+X and Ba1-xUxF2+2x Solid-Solutions

Martin Ouwerkerk, F.J. Veldkamp, Joop Schoonman

Solid State Ionics 22(2-3) • januari 1987

DOI: 10.1016/0167-2738(87)90031-2

Potassium Lithium Niobate: A frequency doubler for (Al,Ga)As lasers

Martin Ouwerkerk

Advanced Materials 3(7‐8):399 - 401 • juli 1991

DOI: 10.1002/adma.19910030716

Potassium Lithium Niobate and its application to intercavity frequency doubling

J.J.E. Reid, Martin Ouwerkerk, L.J.A.M. Beckers

Philips Journal of Research 46(4):199-213 • januari 1992

Luminescence of potassium lithium niobate compositions

M. Wiegel, G. Blasse, Martin Ouwerkerk

Materials Research Bulletin 27(5):617 • mei 1992

DOI: 10.1016/0025-5408(92)90150-X

Bond-orbital calculations of the non-linear optical response of lithium niobate-related compounds

M. Wiegel, G. Blasse, Martin Ouwerkerk

Journal of Physics: Condensed Matter 7(3):675 • januari 1995

DOI: 10.1088/0953-8984/7/3/021

Optical switches based on magnesium lanthanide alloy hydrides

Paul van der Sluis, Martin Ouwerkerk, P.A. Duine

Applied Physics Letters 70(25):3356 - 3358 • juli 1997

DOI: 10.1063/1.119169

Electrochemically induced optical switching of Sm 0.3Mg 0.7H x thin layers

Martin Ouwerkerk

Solid State Ionics 113(1-2):431-437 • december 1998

DOI: 10.1016/S0167-2738(98)00308-7

Hydride-forming electrode materials seen from a kinetic perspective

Peter H.L. Notten, Martin Ouwerkerk, Alexander Ledovskikh, C. Iwakura

Journal of Alloys and Compounds 356-357:759-763 • augustus 2003

DOI: 10.1016/S0925-8388(03)00085-9

High energy density strategies: From hydride-forming materials research to battery integration

Peter H.L. Notten, Martin Ouwerkerk, H. van Hal, H. Feil

Journal of Power Sources 129(1):45-54 • april 2004

DOI: 10.1016/j.jpowsour.2003.11.019

SAND: a modular application development platform for miniature wireless sensors

Martin Ouwerkerk, W.F. Frank Pasveer, Nur Engin

Conference: Wearable and Implantable Body Sensor Networks, 2006 • mei 2006

DOI: 10.1109/BSN.2006.47

Energy scavenging and power management in networks of autonomous microsensors

E. Cantatore, Martin Ouwerkerk

Microelectronics Journal 37(12):1584-1590 • december 2006

DOI: 10.1016/j.mejo.2006.04.014

Unobtrusive Sensing of Psychophysiological Parameters

Martin Ouwerkerk, W.F. Frank Pasveer, Geert Langereis

In boek: Probing Experience • januari 2008

DOI: 10.1007/978-1-4020-6593-4_15

Mapping facial expression recognition algorithms on a low-power smart camera

Anteneh A. Abbo, Vincent Jeanne, Martin Ouwerkerk, Henk Corporaal

Conference: 2008 Second ACM/IEEE International Conference on Distributed Smart Cameras • september 2008

DOI: 10.1109/ICDSC.2008.4635726

Emotion measurement platform for daily life situations

Joyce Westerink, Martin Ouwerkerk, Gert-Jan de Vries, Marco van Boven

Conference: 2009 3rd International Conference on Affective Computing and Intelligent Interaction • september 2009

DOI: 10.1109/ACII.2009.5349574

Unobtrusive Emotions Sensing in Daily Life

Martin Ouwerkerk

In boek: Sensing Emotions • juli 2011

DOI: 10.1007/978-90-481-3258-4_2

Can Mobile skin conductance assessments be helpful in signalling imminent inpatient aggression?

Erik Kuijpers, Henk Nijman, Inge M.B. Bongers, Martin Ouwerkerk

Acta Neuropsychiatrica 24(1):56 • februari 2012

DOI: 10.1111/j.1601-5215.2011.00582.x

Deriving stress from peripheral physiology

Gert-Jan De Vries, M. Dooren, W.H.M. Beek, Martin Ouwerkerk, Joyce Westerink

Conference: Proceedings of the 33rd International Conference of the Stress and Anxiety Research Society (STAR) • juli 2012

Unobtrusive Emotion Sensing in Everyday Life

Joyce Westerink, Anton Boxtel, Wijnand A. Ijsselsteijn, Martin Ouwerkerk, Geraldine Fitzpatrick

Conference: Proceedings of Measuring Behavior 2012 • augustus 2012

Smart Technologies for Long-Term Stress Monitoring at Work

Rafal Kocielnik, Natalia Sidorova, Fabrizio Maria Maggi, Martin Ouwerkerk, Joyce Westerink

Proceedings of the IEEE Symposium on Computer-Based Medical Systems • juni 2013

DOI: 10.1109/CBMS.2013.6627764

Wireless Multi Sensor Bracelet with Discreet Feedback

Martin Ouwerkerk, Pierre Dandine, Dennis Bolio, Joyce Westerink

Conference: Wireless Health 2013 At: Baltimore • november 2013

DOI: 10.1145/2534088.2534104

Telling the Story and Re-Living the Past: How Speech Analysis Can Reveal Emotions in Post-traumatic Stress Disorder (PTSD) Patients

Egon L. van den Broek, Frans van der Sluis, Ton Dijkstra, Martin Ouwerkerk

Boekhoofdstuk • februari 2014

DOI: 10.1007/978-90-481-3258-4_10

The Vitality Bracelet: Bringing Balance to Your Life with Psychophysiological Measurements

Joyce Westerink, William van Beek, Elke Daemen, Martin Ouwerkerk

Boekhoofdstuk • maart 2014

DOI: 10.1007/978-1-4471-6392-3_9

Heart Rate Variability, Sleep, and the Early Detection of Post-traumatic Stress Disorder

Geert Van Boxtel, Pierre J. M. Cluitmans, Roy Raymann, Martin Ouwerkerk, Margriet M. Sitskoorn

In boek: Sleep and Combat-Related Post Traumatic Stress Disorder • januari 2018

DOI: 10.1007/978-1-4939-7148-0_22

Deriving a Cortisol-Related Stress Indicator From Wearable Skin Conductance Measurements: Quantitative Model & Experimental Validation

Joyce Westerink, Roos J. E. Rajae-Joordens, Martin Ouwerkerk, Raymond van Ee

Frontiers in Computer Science 2 • september 2020

DOI: 10.3389/fcomp.2020.00039