Search

Your search keyword '"Koch, R"' showing total 6,434 results
Start Over Author "Koch, R"
6,434 results on '"Koch, R"'

2. Strongly-overdoped La$_{2-x}$Sr$_x$CuO$_4$: Evidence for Josephson-coupled grains of strongly-correlated superconductor

Author

Li, Yangmu, Sapkota, A., Lozano, P. M., Du, Zengyi, Li, Hui, Wu, Zebin, Kundu, Asish K., Koch, R. J., Wu, Lijun, Winn, B. L., Chi, Songxue, Matsuda, M., Frontzek, M., Bozin, E. S., Zhu, Yimei, Bozovic, I., Pasupathy, Abhay N., Drozdov, Ilya K., Fujita, Kazuhiro, Gu, G. D., Zaliznyak, Igor, Li, Qiang, and Tranquada, J. M.

Subjects
Condensed Matter - Superconductivity
Abstract

The interpretation of how superconductivity disappears in cuprates at large hole doping has been controversial. To address this issue, we present an experimental study of single-crystal and thin film samples of La$_{2-x}$Sr$_x$CuO$_4$ (LSCO) with $x\ge0.25$. In particular, measurements of bulk susceptibility on LSCO crystals with $x=0.25$ indicate an onset of diamagnetism at $T_{c1}=38.5$ K, with a sharp transition to a phase with full bulk shielding at $T_{c2}=18$ K, independent of field direction. Strikingly, the in-plane resistivity only goes to zero at $T_{c2}$. Inelastic neutron scattering on $x=0.25$ crystals confirms the presence of low-energy incommensurate magnetic excitations with reduced strength compared to lower doping levels. The ratio of the spin gap to $T_{c2}$ is anomalously large. Our results are consistent with a theoretical prediction for strongly overdoped cuprates by Spivak, Oreto, and Kivelson, in which superconductivity initially develops within disconnected self-organized grains characterized by a reduced hole concentration, with bulk superconductivity occurring only after superconductivity is induced by proximity effect in the surrounding medium of higher hole concentration. Beyond the superconducting-to-metal transition, local differential conductance measurements on an LSCO thin film suggest that regions with pairing correlations survive, but are too dilute to support superconducting order. Future experiments will be needed to test the degree to which these results apply to overdoped cuprates in general., Comment: 21 pages, 15 figures; added more sample characterizations, results for another sample, more discussion; accepted version

Published
2022
Full Text
View/download PDF

5. Driving Factors of Recommending a Hand Surgery Clinic After Surgery

Author

Blomme, R.A.M., Sluijter, B.J.R., van der Avoort, D.J.J.C., Halbesma, G.J., Kroeze, A., Smit, J., Debeij, J., Walbeehm, E.T., van Couwelaar, G.M., Vermeulen, G.M., de Schipper, J.P., Temming, J.F.M., van Uchelen, J.H., de Boer, H.L., de Haas, K.P., Harmsen, K., Zöphel, O.T., Feitz, R., Souer, J.S., Koch, R., Hovius, S.E.R., Moojen, T.M., Smit, X., Hagen, R., van Huis, R., Pennehouat, P.Y., Schoneveld, K., van Kooij, Y.E., Wouters, R.M., Veltkamp, J., Fink, A., Esteban Lopez, L., de Ridder, W.A., Slijper, H.P., Selles, R.W., Porsius, J.T., Tsehaie, J., Poelstra, R., Jansen, M.C., van der Oest, M.J.W., Hoogendam, L., Teunissen, J.S., Koopman, J.E., Dekker, J., ter Stege, M.H.P., Zuidam, J.M., Hundepool, C.A., van der Heijden, B.E.P.A., Colaris, J.W., Bijlsma, W.R., Porsius, Jarry T., ter Stege, Marloes H.P., Selles, Ruud W., and Slijper, Harm P.

Published
2024
Full Text
View/download PDF

6. Dual Orbital Degeneracy Lifting in a Strongly Correlated Electron System

Author

Koch, R. J., Sinclair, R., McDonnell, M. T., Yu, R., Abeykoon, M., Tucker, M. G., Tsvelik, A. M., Billinge, S. J. L., Zhou, H. D., Yin, W. -G., and Bozin, E. S.

Subjects
Condensed Matter - Strongly Correlated Electrons
Abstract

The local structure of NaTiSi$_{2}$O$_{6}$ is examined across its Ti-dimerization orbital-assisted Peierls transition at 210 K. An atomic pair distribution function approach evidences local symmetry breaking preexisting far above the transition. The analysis unravels that on warming the dimers evolve into a short range orbital degeneracy lifted (ODL) state of dual orbital character, persisting up to at least 490 K. The ODL state is correlated over the length scale spanning $\sim$6 sites of the Ti zigzag chains. Results imply that the ODL phenomenology extends to strongly correlated electron systems., Comment: 7 pages, 5 figures

Published
2020
Full Text
View/download PDF

7. Three-dimensional Ising Ferrimagnetism of Cr-Fe-Cr trimers in FeCr2Te4

Author

Liu, Yu, Koch, R. J., Hu, Zhixiang, Aryal, Niraj, Stavitski, Eli, Tong, Xiao, Attenkofer, Klaus, Bozin, E. S., Yin, Weiguo, and Petrovic, C.

Subjects
Condensed Matter - Strongly Correlated Electrons, Condensed Matter - Materials Science
Abstract

We carried out a comprehensive study of magnetic critical behavior in single crystals of ternary chalcogenide FeCr$_2$Te$_4$ that undergoes a ferrimagnetic transition below $T_c$ $\sim$ 123 K. Detailed critical behavior analysis and scaled magnetic entropy change indicate a second-order ferrimagentic transition. Critical exponents $\beta = 0.30(1)$ with $T_c = 122.4(5)$ K, $\gamma = 1.22(1)$ with $T_c = 122.8(1)$ K, and $\delta = 4.24(2)$ at $T_c$ $\sim$ 123 K suggest that the spins approach three-dimensional Ising ($\beta$ = 0.325, $\gamma$ = 1.24, and $\delta$ = 4.82) model coupled with the attractive long-range interactions between spins that decay as $J(r)\approx r^{-4.88}$. Our results suggest that the ferrimagnetism in FeCr$_2$Te$_4$ is due to itinerant ferromagnetism among the antiferromagnetically coupled Cr-Fe-Cr trimers., Comment: Accepted in PRB

Published
2020
Full Text
View/download PDF

8. Charge density waves in cuprate superconductors beyond the critical doping

Author

Miao, H., Fabbris, G., Koch, R. J., Mazzone, D. G., Nelson, C. S., Acevedo-Esteves, R., Li, Y., Gu, G. D., Yilmaz, T., Kaznatcheev, K., Vescovo, E., Oda, M., Kurosawa, K., Momono, N., Assefa, T. A., Robinson, I. K., Bozin, E., Tranquada, J. M., Johnson, P. D., and Dean, M. P. M.

Subjects
Condensed Matter - Superconductivity, Condensed Matter - Strongly Correlated Electrons
Abstract

The unconventional normal-state properties of the cuprates are often discussed in terms of emergent electronic order that onsets below a putative critical doping of xc = 0.19. Charge-density wave (CDW) correlations represent one such order; however, experimental evidence for such order generally spans a limited range of doping that falls short of the critical value xc, leading to questions regarding its essential relevance. Here, we use x-ray diffraction to demonstrate that CDW correlations in La2-xSrxCuO4 persist up to a doping of at least x = 0.21. The correlations show strong changes through the superconducting transition, but no obvious discontinuity through xc = 0.19, despite changes in Fermi surface topology and electronic transport at this doping. These results demonstrate the interaction between CDWs and superconductivity even in overdoped cuprates and prompt a reconsideration of the role of CDW correlations in the high-temperature cuprate phase diagram., Comment: 8 pages + 5 pages of supplemental material; accepted in npj Quantum Materials

Published
2020
Full Text
View/download PDF

10. Long-Term Outcomes of Nonsurgical Treatment of Thumb Carpometacarpal Osteoarthritis: A Cohort Study

Author

Esteban Lopez, Lisa M.J., Hoogendam, Lisa, Vermeulen, Guus M., Tsehaie, Jonathan, Slijper, Harm P., Selles, Ruud W., Wouters, Robbert M., Blomme, R.A.M., Sluijter, B.J.R., van der Avoort, D.J.J.C., Halbesma, G.J., Kroeze, A., Smit, J., Debeij, J., Walbeehm, E.T., van Couwelaar, G.M., de Schipper, J.P., Temming, J.F.M., van Uchelen, J.H., de Boer, H.L., de Haas, K.P., Harmsen, K., Zöphel, O.T., Feitz, R., Souer, J.S., Koch, R., Hovius, S.E.R., Moojen, T.M., Smit, X., Hagen, R., van Huis, R., Pennehouat, P.Y., Schoneveld, K., van Kooij, Y.E., Veltkamp, J., Fink, A., de Ridder, W.A., Porsius, J.T., Tsehaie, J., Poelstra, R., Jansen, M.C., van der Oest, M.J.W., Teunissen, J.S., Koopman, J.E., Dekker, J., ter Stege, M.H.P., Zuidam, J.M., van Nieuwenhoven, C.A., Hundepool, C.A., van der Heijden, B.E.P.A., Colaris, J.W., and Bijlsma, W.R.

Published
2023
Full Text
View/download PDF

11. Patient-Reported Outcomes and Function After Surgical Repair of the Ulnar Collateral Ligament of the Thumb

Author

Blomme, R.A.M., Sluijter, B.J.R., van der Avoort, D.J.J.C., Halbesma, G.J., Kroeze, A., Smit, J., Debeij, J., Walbeehm, E.T., van Couwelaar, G.M., Vermeulen, G.M., de Schipper, J.P., Temming, J.F.M., van Uchelen, J.H., de Boer, H.L., de Haas, K.P., Harmsen, K., Zöphel, O.T., Feitz, R., Koch, R., Hovius, S.E.R., Moojen, T.M., Smit, X., Hagen, R., van Huis, R., Pennehouat, P.Y., Schoneveld, K., van Kooij, Y.E., Wouters, R.M., Veltkamp, J., Fink, A., Esteban Lopez, L., de Ridder, W.A., Slijper, H.P., Porsius, J.T., Tsehaie, J., Poelstra, R., Jansen, M.C., Hoogendam, L., Teunissen, J.S., Koopman, J.E., Dekker, J., ter Stege, M.H.P., van Nieuwenhoven, C.A., van der Heijden, B.E.P.A., Colaris, J.W., Bijlsma, W.R., Legerstee, Ingmar W.F., van der Oest, Mark J.W., Souer, J. Sebastiaan, Hundepool, Caroline A., Duraku, Liron S., Selles, Ruud W., and Zuidam, J. Michiel

Published
2023
Full Text
View/download PDF

13. Surface states and Rashba-type spin polarization in antiferromagnetic MnBi$_2$Te$_4$

Author

Vidal, R. C., Bentmann, H., Peixoto, T. R. F., Zeugner, A., Moser, S., Min, C. H., Schatz, S., Kissner, K., Ünzelmann, M., Fornari, C. I., Vasili, H. B., Valvidares, M., Sakamoto, K., Mondal, D., Fujii, J., Vobornik, I., Jung, S., Cacho, C., Kim, T. K., Koch, R. J., Jozwiak, C., Bostwick, A., Denlinger, J. D., Rotenberg, E., Buck, J., Hoesch, M., Diekmann, F., Rohlf, S., Kalläne, M., Rossnagel, K., Otrokov, M. M., Chulkov, E. V., Ruck, M., Isaeva, A., and Reinert, F.

Subjects
Condensed Matter - Strongly Correlated Electrons
Abstract

The layered van der Waals antiferromagnet MnBi$_2$Te$_4$ has been predicted to combine the band ordering of archetypical topological insulators such as Bi$_2$Te$_3$ with the magnetism of Mn, making this material a viable candidate for the realization of various magnetic topological states. We have systematically investigated the surface electronic structure of MnBi$_2$Te$_4$(0001) single crystals by use of spin- and angle-resolved photoelectron spectroscopy experiments. In line with theoretical predictions, the results reveal a surface state in the bulk band gap and they provide evidence for the influence of exchange interaction and spin-orbit coupling on the surface electronic structure., Comment: Revised version

Published
2019
Full Text
View/download PDF

14. Photoinduced ultrafast dynamics of local nematicity and lattice distortions in FeSe crystals

Author

Konstantinova, T., Wu, L., Abeykoon, M., Koch, R. J., Wang, A. F., Li, R. K., Shen, X., Li, J., Tao, J., Zaliznyak, I. A., Petrovic, C., Billinge, S. J. L., Wang, X. J., Bozin, E. S., and Zhu, Y.

Subjects
Condensed Matter - Superconductivity
Abstract

Formation of electronic nematicity is a common thread of unconventional superconductors. In iron-based materials, the long-range nematic order is revealed by the orthorhombic lattice distortion, which importance is a highly controversial topic due the small magnitude of the distortion. Here, we study the local crystal structure of FeSe and its interaction with electronic degrees of freedom using ultrafast electron diffraction, x-ray pair distribution function analysis, and transmission electron microscopy and find a significant lattice response to local nematicity. The study demonstrates how local lattice distortions, which exist even at temperatures above the nematic phase transition, can be released by photoexcitation, leading to an enhancement of the crystalline order. The observed local atomic structures and their out-of-equilibrium behavior unravel a sophisticated coupling between the lattice and nematic order parameter in FeSe.

Published
2019
Full Text
View/download PDF

15. Correlated disorder to order crossover in the local structure of K$_x$Fe$_{2-y}$Se$_{2-z}$S$_z$

Author

Mangelis, P., Koch, R. J., Lei, H., Neder, R. B., McDonnell, M. T., Feygenson, M., Petrovic, C., Lappas, A., and Bozin, E. S.

Subjects
Condensed Matter - Superconductivity
Abstract

A detailed account of the local atomic structure and disorder at 5~K across the phase diagram of the high temperature superconductor K$_x$Fe$_{2-y}$Se$_{2-z}$S$_z$ $(0 \leq z \leq 2)$ is obtained from neutron total scattering and associated atomic pair distribution function (PDF) approaches. Various model independent and model dependent aspects of the analysis reveal a high level of structural complexity on the nanometer length-scale. Evidence is found for considerable disorder in the $c$-axis stacking of the FeSe$_{1-x}$S$_{x}$ slabs without observable signs of turbostratic character of the disorder. In contrast to the related FeCh (Ch = S, Se) type superconductors, substantial Fe-vacancies are present in K$_x$Fe$_{2-y}$Se$_{2-z}$S$_z$, deemed detrimental for superconductivity when ordered. Our study suggests that the distribution of vacancies significantly modifies the iron-chalcogen bond-length distribution, in agreement with observed evolution of the PDF signal. A crossover like transition is observed at a composition of $z\approx1$, from a predominantly vacancy-disordered state at the selenium end to a more vacancy-ordered (VO) phase closer to the sulfur end of the phase diagram. The S-content dependent measures of the local structure are found to exhibit distinct behavior on either side of this crossover, correlating well with the evolution of the superconducting state to that of a magnetic semiconductor towards the $z\approx2$ end. The behavior reinforces the idea of the intimate relationship of correlated Fe-vacancies order in the local structure and the emergent electronic properties., Comment: 15 pages, 11 figures

Published
2019
Full Text
View/download PDF

16. Room temperature local nematicity in FeSe superconductor

Author

Koch, R. J., Konstantinova, T., Abeykoon, M., Wang, A., Petrovic, C., Zhu, Y., Bozin, E. S., and Billinge, S. J. L.

Subjects
Condensed Matter - Superconductivity, Condensed Matter - Materials Science
Abstract

We report pair distribution function measurements of the iron-based superconductor FeSe above and below the structural transition temperature. Structural analysis reveals a local orthorhombic distortion with a correlation length of about 4 nm at temperatures where an average tetragonal symmetry is observed. The analysis further demonstrates that the local distortion is larger than the distortion at temperatures where the average observed symmetry is orthorhombic. Our results suggest that the low-temperature macroscopic nematic state in FeSe forms from an imperfect ordering of orbital-degeneracy-lifted nematic fluctuations which persist up to at least 300 K., Comment: 6 pages, 4 figures

Published
2019
Full Text
View/download PDF

17. Local orbital degeneracy lifting as a precursor to an orbital-selective Peierls transition

Author

Bozin, E. S., Yin, W. G., Koch, R. J., Abeykoon, M., Hor, Y. S., Zheng, H., Lei, H. C., Petrovic, C., Mitchell, J. F., and Billinge, S. J. L.

Subjects
Condensed Matter - Materials Science, Condensed Matter - Strongly Correlated Electrons
Abstract

Fundamental electronic principles underlying all transition metal compounds are the symmetry and filling of the $d$-electron orbitals and the influence of this filling on structural configurations and responses. Here we use a sensitive local structural technique, x-ray atomic pair distribution function analysis, to reveal the presence of fluctuating local-structural distortions at high temperature of one such compound, \cis . We show that this hitherto overlooked fluctuating symmetry lowering is electronic in origin and will significantly modify the energy-level spectrum and electronic and magnetic properties. The explanation is a local, fluctuating, orbital-degeneracy-lifted state. The natural extension of our result would be that this phenomenon is likely to be widespread amongst diverse classes of partially filled nominally degenerate d-electron systems, with potentially broad implications for our understanding of their properties., Comment: 10 pages 3 figures

Published
2019
Full Text
View/download PDF

18. Stakeholder Participation and Cross-Sectoral Cooperation in a Quality Circle on Community-Based Teaching: Results of a Qualitative Interview Study

Author

Koch R, Steffen MT, and Joos S

Subjects
quality circle, quality management, community-based teaching, family medicine, cross-sectional, qualitative research, Medicine (General), R5-920
Abstract

Roland Koch, Marie-Theres Steffen, Stefanie Joos Institute for General Practice and Interprofessional Care, Tübingen University Hospital, Tübingen, GermanyCorrespondence: Roland Koch, Tel +49 1758065961, Email roland.koch@med.uni-tuebingen.deIntroduction: Community-based learning in family medicine practices is an increasingly important part of the medical curriculum internationally. It is widely regarded as one solution to healthcare system needs, such as training and retaining a workforce willing to work in primary care. However, the perspectives of community-based medical educators and representatives from university-based medical education are rarely integrated. To improve teaching quality and promote exchange between those two sectors of medical education, the Institute for General Practice and Interprofessional Care at Tübingen University started a quality circle in family medicine teaching involving stakeholders from both sectors in 2018. The study aims to describe how the participants of this specific QC describe the cross-sectoral cooperation and participation of stakeholders in the quality management of community and university medical education.Methods: After an observed meeting of the quality circle, semi-structured interviews were conducted with n=12 participants of the quality circle. Interview transcripts were analyzed using grounded theory.Results: According to the participants, the quality circle provides a dynamic continuity which allows participants to navigate known barriers to transsectoral collaboration in the quality management of community-based medical education. The quality circle is perceived as an instrument for quality improvement that offered continuity and direction. At the same time, it allows for enough freedom and flexibility for the involved stakeholders to creatively work together on quality management and be inspired by their experiences.Discussion: The quality circle has the potential to facilitate collaboration between the two teaching settings, form a creative community, and give medical students an active role in educational quality management.Keywords: quality circle, quality management, community-based teaching, family medicine, cross-sectional, qualitative research

Published
2022

20. Comparing Patient-Reported Outcomes on Three-Ligament Tenodesis Between Partial and Complete Scapholunate Ligament Injuries: A Cohort Study

Author

Blomme, R.A.M., Sluijter, B.J.R., van der Avoort, D.J.J.C., Kroeze, A., Smit, J.M., Debeij, J., Walbeehm, E.T., van Couwelaar, G.M., Vermeulen, Guus M., de Schipper, J.P., Temming, J.F.M., van Uchelen, J.H., de Boer, H.L., de Haas, K.P., Harmsen, K., Zöphel, O.T., Koch, R., Moojen, T.M., Smit, X., Halbesma, G.J., van Huis, R., Pennehouat, P.Y., Schoneveld, K., van Kooij, Y.E., Wouters, R.M., Zagt, P., Veltkamp, J., Fink, A., de Ridder, W.A., Tsehaie, J., Poelstra, R., Janssen, M.C., Sun, P.O., Schrier, V.J.M.M., Hoogendam, L., Teunissen, J.S., Dekker, Jak, Jansen-Landheer, M.L., ter Stege, M.H.P., Souer, J.S., Selles, R.W., Slijper, H.P., Hovius, S.E.R., Feitz, R., Hakkesteegt, Stefanie N., van der Oest, Mark J.W., Dullemans, Kas N., Duraku, Liron S., Hundepool, Caroline A., Selles, Ruud W., Feitz, Reinier, and Zuidam, J. Michiel

Published
2024
Full Text
View/download PDF

22. Is Early Active Motion After 3-Ligament Tenodesis Noninferior to Late Active Motion? A Prospective, Multicenter Cohort Study

Author

Blomme, R.A.M., Sluijter, B.J.R., van der Avoort, D.J.J.C., Kroeze, A., Smit, J., Debeij, J., Walbeehm, E.T., van Couwelaar, G.M., Vermeulen, G.M., de Schipper, J.P., Temming, J.F.M., van Uchelen, J.H., de Boer, H.L., de Haas, K.P., Harmsen, K., Zöphel, O.T., Feitz, R., Souer, J.S., Koch, R., Hovius, S.E.R., Moojen, T.M., Smit, X., van Huis, R., Pennehouat, P.Y., Schoneveld, K., van Kooij, Y.E., Veltkamp, J.J., Fink, A., De Ridder, W.A., Slijper, H.P., Selles, R.W., Porsius, J.T., Wouters, R.M., Tsehaie, J., Poelstra, R., Jansen, M.C., van der Oest, M.J.W., Hoogendam, L., Teunissen, J.S., Dekker, J., Jansen-Landheer, M., ter Stege, M., Zuidam, J.M., van Nieuwenhoven, C.A., Duraku, L.S., Hundepool, C., van der Heijden, B., Colaris, J.W., Bakker, Daniel, Colaris, Joost W., Kraan, Gerald A., Mathijssen, Nina, Selles, Ruud, Smit, Xander, and Wouters, Robbert

Published
2022
Full Text
View/download PDF

23. Quasiparticles and charge transfer at the two surfaces of the honeycomb iridate Na$_2$IrO$_3$

Author

Moreschini, L., Vecchio, I. Lo, Breznay, N. P., Moser, S., Ulstrup, S., Koch, R., Wirjo, J., Jozwiak, C., Kim, K. S., Rotenberg, E., Bostwick, A., Analytis, J. G., and Lanzara, A.

Subjects
Condensed Matter - Strongly Correlated Electrons
Abstract

Direct experimental investigations of the low-energy electronic structure of the Na$_2$IrO$_3$ iridate insulator are sparse and draw two conflicting pictures. One relies on flat bands and a clear gap, the other involves dispersive states approaching the Fermi level, pointing to surface metallicity. Here, by a combination of angle-resolved photoemission, photoemission electron microscopy, and x-ray absorption, we show that the correct picture is more complex and involves an anomalous band, arising from charge transfer from Na atoms to Ir-derived states. Bulk quasiparticles do exist, but in one of the two possible surface terminations the charge transfer is smaller and they remain elusive.

Published
2017
Full Text
View/download PDF

25. Prevalence and Risk Factors for Postoperative Complications Following Open A1 Pulley Release for a Trigger Finger or Thumb

Author

van der Avoort, D.J.J.C., Blomme, R.A.M., de Boer, H.L., van Couwelaar, G.M., Debeij, J., Dekker, J., van Ewijk, F.J., Feitz, R., Fink, A., de Haas, K.P., Harmsen, K., Hoogendam, L., Hovius, S.E.R., van Huis, R., Jansen-Landheer, M.L., Koch, R., van Kooij, Y.E., Kroeze, A., Moojen, T.M., van der Oest, M.J.W., Pennehouat, P.Y., de Ridder, W.A., de Schipper, J.P., Schoneveld, K., Slijper, H.P., Sluijter, B.J.R., Smit, X., Souer, J.S., ter Stege, M., Temming, J.F.M., Teunissen, J.S., van Uchelen, J.H., Veltkamp, J.J., Vermeulen, G.M., Walbeehm, E.T., Zöphel, O.T., Koopman, Jaimy E., Zweedijk, Bo E., Hundepool, Caroline A., Duraku, Liron S., Smit, Jeroen, Wouters, Robbert M., Selles, Ruud W., and Zuidam, J. Michiel

Published
2022
Full Text
View/download PDF

29. Outcome of Simple Decompression of Primary Cubital Tunnel Syndrome Based on Patient-Reported Outcome Measurements

Author

Blomme, R.A.M., Sluijter, B.J.R., van der Avoort, D.J.J.C., Kroeze, A., Smit, J.M., Debeij, J., Walbeehm, E.T., van Couwelaar, G.M., Vermeulen, G.M., de Schipper, J.P., Halbesma, G.J., Temming, J.F.M., van Uchelen, J.H., de Boer, H.L., de Haas, K.P., Harmsen, K., Zöphel, O.T., Feitz, R., Souer, J.S., Koch, R., Hovius, S.E.R., Moojen, T.M., Smit, X., Bijlsma, W.R., Colaris, J.W., van Nieuwenhoven, C.A., van der Heijden, B.E.P.A., Hundepool, C.A., Duraku, L.S., Zuidam, J.M., van Huis, R., Pennehouat, P.Y., Schoneveld, K., van Kooij, Y.E., Wouters, R.M., Veltkamp, J., Fink, A., de Ridder, W.A., Slijper, H.P., Selles, R.W., Porsius, J.T., Tsehaie, J., Poelstra, R., Jansen, M.C., Evers, S., van der Oest, M.J.W., Hoogendam, L., Teunissen, J.S., Koopman, J.E., Sun, P.O., Dekker, J., ter Stege, M.H.P., Hagen, R., Mendelaar, Nienke H.A., Hundepool, Caroline A., Hoogendam, Lisa, Duraku, Liron S., Power, Dominic M., Walbeehm, Erik T., Selles, Ruud W., and Zuidam, J. Michiel

Published
2022
Full Text
View/download PDF

30. THE NATURE OF DECOLONISATION IN HEALTH SCIENCES CURRICULA: A SCOPING REVIEW.

Author

Koch, R., Pool, J., and Heymans, Y.

Subjects
ALLIED health education, PUBLIC demonstrations, STUDENT activism, DECOLONIZATION, CLASSROOM environment
Abstract

The amassed momentum from recent student protests applied pressure on Higher Education to respond to the calls for curriculum transformation. While decolonisation is viewed as an opportunity to create an inclusive and diverse learning environment, decolonising health curricula seems unachievable because the concept is not clearly defined, resulting in curricula that continue to marginalise and exclude certain groups. This scoping review explores the nature of decolonisation within Health Sciences. Online databases were used to identify 21 sources addressing the nature of decolonisation in Health Sciences. The findings indicate that decolonisation in Health Sciences is described as the process of acknowledging the impact of colonialism; combatting injustice and inequities; reclaiming and revaluing heritage; and interrogating knowledge to find alternative ways. This review added to understanding the nature of decolonisation in the Health Sciences field and its potential as a vehicle for transformation in HE (Higher Education). [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
View/download PDF

35. Factors associated with return to work after open reinsertion of the triangular fibrocartilage

Author

Blomme, R.A.M., Sluijter, B.J.R., van der Avoort, D.J.J.C., Kroeze, A., Smit, J., Debeij, J., Walbeehm, E.T., van Couwelaar, G.M., Vermeulen, G.M., de Schipper, J.P., Temming, J.F.M., van Uchelen, J.H., de Boer, H.L., de Haas, K.P., Harmsen, K., Souer, J.S., Zöphel, O.T., Koch, R., Moojen, T.M., Smit, X., van Huis, R., Pennehouat, P.Y., Schoneveld, K., van Kooij, Y.E., Wouters, R.M., Veltkamp, J.J., Fink, A., de Ridder, W.A., Slijper, H.P., Tsehaie, J., Janssen, M.C., Poelstra, R., Sun, P.O., Schrier, V.J.M.M., Hoogendam, L., Dekker, J., Jansen-Landheer, M., ter Stege, M., Feitz, R., Teunissen, J.S., van der Oest, M.J.W., van der Heijden, E.P.A., Selles, R.W., and Hovius, S.E.R.

Published
2021
Full Text
View/download PDF

36. Prognostic Factors in Open Triangular Fibrocartilage Complex (TFCC) Repair

Author

Blomme, R.A.M., Sluijter, B.J.R., van der Avoort, D.J.J.C., Kroeze, A., Smit, J., Debeij, J., Walbeehm, E.T., van Couwelaar, G.M., Vermeulen, Guus M., de Schipper, J.P., Temming, J.F.M., van Uchelen, J.H., de Boer, H.L., de Haas, K.P., Harmsen, K., Zöphel, O.T., Koch, R., Moojen, T.M., Smit, X., van Huis, R., Pennehouat, P.Y., Schoneveld, K., van Kooij, Y.E., Wouters, R.M., Veltkamp, J.J., Fink, A., de Ridder, W.A., Poelstra, R., Slijper, H.P., Selles, R.W., Tsehaie, J., Janssen, M.C., Sun, P.O., Schrier, V.J.M.M., Hoogendam, L., Dekker, Jak, Jansen-Landheer, M., Stege, M. ter, Feitz, Reinier, Stip, Daniel, van der Oest, Mark, Souer, Sebastiaan, Hovius, Steven, and Selles, Ruud

Published
2021
Full Text
View/download PDF

39. Which Tendon Plasty Has the Best Outcome? A Comparison of Four Tendon Plasty Techniques in a Large Cohort of Patients with Symptomatic Trapeziometacarpal Osteoarthritis

Author

Hoogendam, Lisa, Bink, Thijs, de Lange, Jurriaan, Selles, Ruud W., Colaris, Joost W., Zuidam, J. Michiel, Hovius, Steven E. R., van der Heijden, Brigitte, Blomme, R. A. M., Sluijter, B. J. R., van der Avoort, D. J. J. C., Kroeze, A., Smit, J., Debeij, J., Walbeehm, E. T., van Couwelaar, G. M., Vermeulen, G. M., de Schipper, J. P., Temming, J. F. M., van Uchelen, J. H., de Boer, H. L., de Haas, K. P., Harmsen, K., Zöphel, O. T., Feitz, R., Souer, J. S., Koch, R., Moojen, T. M., Smit, X., van Huis, R., Pennehouat, P. Y., Schoneveld, K., van Kooij, Y. E., Wouters, R. M., Zagt, P., van Ewijk, F. J., Veltkamp, J. J., Fink, A., de Ridder, W. A., Slijper, H. P., Porsius, J. T., Tsehaie, J., Poelstra, R., Jansen, M. C., van der Oest, M. J. W., Sun, P. O., Teunissen, J. S., Dekker, J., Jansen-Landheer, M. L., and ter Stege, M. H. P.

Published
2022
Full Text
View/download PDF

44. Driving Factors of Recommending a Hand Surgery Clinic After Surgery

Author

Porsius, Jarry T., primary, ter Stege, Marloes H.P., additional, Selles, Ruud W., additional, Slijper, Harm P., additional, Blomme, R.A.M., additional, Sluijter, B.J.R., additional, van der Avoort, D.J.J.C., additional, Halbesma, G.J., additional, Kroeze, A., additional, Smit, J., additional, Debeij, J., additional, Walbeehm, E.T., additional, van Couwelaar, G.M., additional, Vermeulen, G.M., additional, de Schipper, J.P., additional, Temming, J.F.M., additional, van Uchelen, J.H., additional, de Boer, H.L., additional, de Haas, K.P., additional, Harmsen, K., additional, Zöphel, O.T., additional, Feitz, R., additional, Souer, J.S., additional, Koch, R., additional, Hovius, S.E.R., additional, Moojen, T.M., additional, Smit, X., additional, Hagen, R., additional, van Huis, R., additional, Pennehouat, P.Y., additional, Schoneveld, K., additional, van Kooij, Y.E., additional, Wouters, R.M., additional, Veltkamp, J., additional, Fink, A., additional, Esteban Lopez, L., additional, de Ridder, W.A., additional, Slijper, H.P., additional, Selles, R.W., additional, Porsius, J.T., additional, Tsehaie, J., additional, Poelstra, R., additional, Jansen, M.C., additional, van der Oest, M.J.W., additional, Hoogendam, L., additional, Teunissen, J.S., additional, Koopman, J.E., additional, Dekker, J., additional, ter Stege, M.H.P., additional, Zuidam, J.M., additional, Hundepool, C.A., additional, van der Heijden, B.E.P.A., additional, Colaris, J.W., additional, and Bijlsma, W.R., additional

Published
2023
Full Text
View/download PDF

46. Evaluation of HRV estimation algorithms from PPG data using neural networks

Author

Wittenberg Th., Koch R., Pfeiffer N., Lang N., Struck M., Amft O., and Eskofier B.

Subjects
photoplethysmography, ppg, heart-rate variability, hrv, neural networks, Medicine
Abstract

Heart rate variability (HRV) is a powerful measure to gain information on the activation of the central nervous system and is thus a strong indicator for the overall health and emotional state of a person. Currently, the gold standard for HRV analysis is the examination of R-peaks in electrocardiograms (ECG), which requires a placement of electrodes on the torso. This is often impracticable, especially for the use in daily routines or 24/7 measurements. Photoplethysmograms (PPG) are an alternative to ECG assessment and are easier to acquire, e.g. by using fitness trackers or smart watches. Nevertheless, PPG data is more susceptible to motion artifacts. Hence, goal of this work is to develop and evaluate an artificial neural network (ANN) approach to estimate the R-peak locations in complex PPG signals. Public data collections were used as benchmark to compare our ANN-based approach to state-of-the-art methods. Results show that ANNs can improve HRV estimation during motion. HRV estimations from baseline methods (decision-tree based and automatic multiscalebased peak detection) were compared with the best performing neural network (3L-GRU) using the TROIKA dataset with respect to reference parameters obtained from a manual selection of the peaks in ECG data. In most cases, the neural network based HRV estimation was closer to the reference HRV compared to baseline methods (lower μ and σ ) Also, σ is smaller for the best performing ANN approach across most HRV parameters. Inclusion of another PPG or acceleration channel did not affect HRV estimation. Although, the neural network learning approach outperforms conventional methods, the examined PPG-based HRV estimation has still accuracy limitations. Nonetheless, the proposed estimation approach opens up new directions for further improvement.

Published
2020
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results