684 results on '"van Driel M"'
Search Results
2. Measuring Fundamental and Higher Mode Surface Wave Dispersion on Mars From Seismic Waveforms
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Xu, Haotian, Beghein, C, Panning, MP, Drilleau, M, Lognonné, P, van Driel, M, Ceylan, S, Böse, M, Brinkman, N, Clinton, J, Euchner, F, Giardini, D, Horleston, A, Kawamura, T, Kenda, B, Murdoch, N, and Stähler, S
- Published
- 2021
3. An innovative antimicrobial stewardship programme for children in remote and regional areas in Queensland, Australia: optimising antibiotic use through timely intravenous-to-oral switch
- Author
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Avent, M.L., Lee, X.J., Irwin, A.D., Graham, N., Brain, D., Fejzic, J., van Driel, M., and Clark, J.E.
- Published
- 2022
- Full Text
- View/download PDF
4. Hoofd-halsoncologie
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van Driel, M. G., de Bree, R., van Spil, J.A., editor, van Muilekom, H.A.M., editor, Folsche, M., editor, and Schreuder-Cats, H.A., editor
- Published
- 2021
- Full Text
- View/download PDF
5. Video versus telephone for telehealth delivery: a cross-sectional study of Australian general practice trainees
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Fisher, K, Tapley, A, Ralston, A, Davey, A, Fielding, A, van Driel, M, Holliday, E, Ball, J, Dizon, J, Spike, N, Clarke, L, Magin, P, Fisher, K, Tapley, A, Ralston, A, Davey, A, Fielding, A, van Driel, M, Holliday, E, Ball, J, Dizon, J, Spike, N, Clarke, L, and Magin, P
- Abstract
BACKGROUND: Remunerated telehealth consultations were introduced in Australia in 2020 in response to the COVID-19 pandemic. Videoconferencing has advantages over telephone-consulting, including improved diagnostic and decision-making accuracy. However, videoconferencing uptake in Australia has been low. This study aimed to establish prevalence and associations of video versus telephone consultations in Australian general practice (GP) registrars' practice. METHODS: A cross-sectional analysis of data from 2020 to 2021 (three 6-monthly data-collection rounds) from the Registrars Clinical Encounters in Training (ReCEnT) study. GP registrars record details of 60 consecutive consultations every 6-month term, for a total of 3 terms. Univariable and multivariable logistic regression were performed within the Generalized Estimating Equations framework with the outcome video versus telephone. RESULTS: 102,286 consultations were recorded by 1,168 registrars, with 21.4% of consultations performed via telehealth. Of these, telephone accounted for 96.6% (95% CI: 96.3-96.8%) and videoconferencing for 3.4% (95% CI: 3.2-3.7%). Statistically significant associations of using videoconferencing, compared to telephone, included longer consultation duration (OR 1.02, 95% CI: 1.01-1.03 per minute; and mean 14.9 versus 12.8 min), patients aged 0-14 years old (OR 1.29, 95% CI: 1.03-1.62, compared to age 15-34), patients new to the registrar (OR 1.19, 95% CI: 1.04-1.35), part-time registrars (OR 1.84, 95% CI: 1.08-3.15), and areas of less socioeconomic disadvantage (OR 1.27, 95% CI: 1.00-1.62 per decile). CONCLUSIONS: Registrars' telehealth consultations were mostly performed via telephone. Telephone use being associated with socioeconomic disadvantage has health equity implications. Future research should explore barriers to videoconferencing use and strategies to increase its uptake.
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- 2024
6. Quantitative sensory testing: a practical guide and clinical applications
- Author
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AIOS Anesthesiologie, Medische staf Anesthesiologie, Infection & Immunity, van Driel, M E C, Huygen, F J P M, Rijsdijk, M, AIOS Anesthesiologie, Medische staf Anesthesiologie, Infection & Immunity, van Driel, M E C, Huygen, F J P M, and Rijsdijk, M
- Published
- 2024
7. Management of Postthyroidectomy Hypoparathyroidism and Its Effect on Hypocalcemia-Related Complications:A Meta-Analysis
- Author
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van Dijk, Sam P.J., van Driel, M. H. Elise, van Kinschot, Caroline M.J., Engel, Maarten F.M., Franssen, Gaston J.H., van Noord, Charlotte, Visser, W. Edward, Verhoef, Cornelis, Peeters, Robin P., van Ginhoven, Tessa M., van Dijk, Sam P.J., van Driel, M. H. Elise, van Kinschot, Caroline M.J., Engel, Maarten F.M., Franssen, Gaston J.H., van Noord, Charlotte, Visser, W. Edward, Verhoef, Cornelis, Peeters, Robin P., and van Ginhoven, Tessa M.
- Abstract
Objective: The aim of this Meta-analysis is to evaluate the impact of different treatment strategies for early postoperative hypoparathyroidism on hypocalcemia-related complications and long-term hypoparathyroidism. Data Sources: Embase.com, MEDLINE, Web of Science Core Collection, Cochrane Central Register of Controlled Trials, and the top 100 references of Google Scholar were searched to September 20, 2022. Review Methods: Articles reporting on adult patients who underwent total thyroidectomy which specified a treatment strategy for postthyroidectomy hypoparathyroidism were included. Random effect models were applied to obtain pooled proportions and 95% confidence intervals. Primary outcome was the occurrence of major hypocalcemia-related complications. Secondary outcome was long-term hypoparathyroidism. Results: Sixty-six studies comprising 67 treatment protocols and 51,096 patients were included in this Meta-analysis. In 8 protocols (3806 patients), routine calcium and/or active vitamin D medication was given to all patients directly after thyroidectomy. In 49 protocols (44,012 patients), calcium and/or active vitamin D medication was only given to patients with biochemically proven postthyroidectomy hypoparathyroidism. In 10 protocols (3278 patients), calcium and/or active vitamin D supplementation was only initiated in case of clinical symptoms of hypocalcemia. No patient had a major complication due to postoperative hypocalcemia. The pooled proportion of long-term hypoparathyroidism was 2.4% (95% confidence interval, 1.9-3.0). There was no significant difference in the incidence of long-term hypoparathyroidism between the 3 supplementation groups. Conclusions: All treatment strategies for postoperative hypocalcemia prevent major complications of hypocalcemia. The early postoperative treatment protocol for postthyroidectomy hypoparathyroidism does not seem to influence recovery of parathyroid function in the long term.
- Published
- 2024
8. Constraints on the shallow elastic and anelastic structure of Mars from InSight seismic data
- Author
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Lognonné, P., Banerdt, W. B., Pike, W. T., Giardini, D., Christensen, U., Garcia, R. F., Kawamura, T., Kedar, S., Knapmeyer-Endrun, B., Margerin, L., Nimmo, F., Panning, M., Tauzin, B., Scholz, J.-R., Antonangeli, D., Barkaoui, S., Beucler, E., Bissig, F., Brinkman, N., Calvet, M., Ceylan, S., Charalambous, C., Davis, P., van Driel, M., Drilleau, M., Fayon, L., Joshi, R., Kenda, B., Khan, A., Knapmeyer, M., Lekic, V., McClean, J., Mimoun, D., Murdoch, N., Pan, L., Perrin, C., Pinot, B., Pou, L., Menina, S., Rodriguez, S., Schmelzbach, C., Schmerr, N., Sollberger, D., Spiga, A., Stähler, S., Stott, A., Stutzmann, E., Tharimena, S., Widmer-Schnidrig, R., Andersson, F., Ansan, V., Beghein, C., Böse, M., Bozdag, E., Clinton, J., Daubar, I., Delage, P., Fuji, N., Golombek, M., Grott, M., Horleston, A., Hurst, K., Irving, J., Jacob, A., Knollenberg, J., Krasner, S., Krause, C., Lorenz, R., Michaut, C., Myhill, R., Nissen-Meyer, T., ten Pierick, J., Plesa, A.-C., Quantin-Nataf, C., Robertsson, J., Rochas, L., Schimmel, M., Smrekar, S., Spohn, T., Teanby, N., Tromp, J., Vallade, J., Verdier, N., Vrettos, C., Weber, R., Banfield, D., Barrett, E., Bierwirth, M., Calcutt, S., Compaire, N., Johnson, C.L., Mance, D., Euchner, F., Kerjean, L., Mainsant, G., Mocquet, A., Rodriguez Manfredi, J. A, Pont, G., Laudet, P., Nebut, T., de Raucourt, S., Robert, O., Russell, C. T., Sylvestre-Baron, A., Tillier, S., Warren, T., Wieczorek, M., Yana, C., and Zweifel, P.
- Published
- 2020
- Full Text
- View/download PDF
9. The seismicity of Mars
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Giardini, D., Lognonné, P., Banerdt, W. B., Pike, W. T., Christensen, U., Ceylan, S., Clinton, J. F., van Driel, M., Stähler, S. C., Böse, M., Garcia, R. F., Khan, A., Panning, M., Perrin, C., Banfield, D., Beucler, E., Charalambous, C., Euchner, F., Horleston, A., Jacob, A., Kawamura, T., Kedar, S., Mainsant, G., Scholz, J.-R., Smrekar, S. E., Spiga, A., Agard, C., Antonangeli, D., Barkaoui, S., Barrett, E., Combes, P., Conejero, V., Daubar, I., Drilleau, M., Ferrier, C., Gabsi, T., Gudkova, T., Hurst, K., Karakostas, F., King, S., Knapmeyer, M., Knapmeyer-Endrun, B., Llorca-Cejudo, R., Lucas, A., Luno, L., Margerin, L., McClean, J. B., Mimoun, D., Murdoch, N., Nimmo, F., Nonon, M., Pardo, C., Rivoldini, A., Manfredi, J. A. Rodriguez, Samuel, H., Schimmel, M., Stott, A. E., Stutzmann, E., Teanby, N., Warren, T., Weber, R. C., Wieczorek, M., and Yana, C.
- Published
- 2020
- Full Text
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10. Planetary Seismology: Nearly 3 years on Mars, and a return to the Moon
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Yana, Charles, Weber, Renee, Walsh, William, Standley, Ian, de Raucourt, Sebastien, Pont, Gabriel, Pike, W. Tom, Nunn, Ceri, Lognonné, Philippe, Kawamura, Taichi, Garcia, Raphael, Elliott, John, Cutler, James, Calcutt, Simon, Bugby, David, Bowles, Neil, Kedar, Sharon, Tharimena, S, Tauzin, B, Stutzmann, E, Schimmel, M, Schmelzbach, C, Nunn, C, Murdoch, N, Lekic, V, Brinkman, N, Kenda, B, Fayon, L, Spiga, A, Stott, A. E, Stähler, S, Orhand-Mainsant, G, Knapmeyer, M, Khan, A, Horleston, A, van Driel, M, Charalambous, C, Ceylan, S, Böse, M, Drilleau, M, Hurst, K, Weber, R, Teanby, N, Schmerr, N, Mimoun, D, Margerin, L, Knapmeyer-Endrun, B, Kedar, S, Kawamura, T, Irving, J, Garcia, R, Clinton, J, Bozdag, E, Lorenz, R, Giardini, D, Pike, W.T, Lognonné, P, Banerdt, W.B, and Panning, Mark
- Published
- 2021
11. Planetary Seismology: Nearly 3 years on Mars, and a return to the Moon
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Panning, Mark, Banerdt, W.B, Lognonné, P, Pike, W.T, Giardini, D, Lorenz, R, Bozdag, E, Clinton, J, Garcia, R, Irving, J, Kawamura, T, Kedar, S, Knapmeyer-Endrun, B, Margerin, L, Mimoun, D, Schmerr, N, Teanby, N, Weber, R, Hurst, K, Drilleau, M, Böse, M, Ceylan, S, Charalambous, C, van Driel, M, Horleston, A, Khan, A, Knapmeyer, M, Orhand-Mainsant, G, Stähler, S, Stott, A. E, Spiga, A, Fayon, L, Kenda, B, Brinkman, N, Lekic, V, Murdoch, N, Nunn, C, Schmelzbach, C, Schimmel, M, Stutzmann, E, Tauzin, B, Tharimena, S, Kedar, Sharon, Bowles, Neil, Bugby, David, Calcutt, Simon, Cutler, James, Elliott, John, Garcia, Raphael, Kawamura, Taichi, Lognonné, Philippe, Nunn, Ceri, Pike, W. Tom, Pont, Gabriel, de Raucourt, Sebastien, Standley, Ian, Walsh, William, Weber, Renee, and Yana, Charles
- Published
- 2021
12. Management of Postthyroidectomy Hypoparathyroidism and Its Effect on Hypocalcemia‐Related Complications: A Meta‐Analysis
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van Dijk, Sam P. J., primary, van Driel, M. H. Elise, additional, van Kinschot, Caroline M. J., additional, Engel, Maarten F. M., additional, Franssen, Gaston J. H., additional, van Noord, Charlotte, additional, Visser, W. Edward, additional, Verhoef, Cornelis, additional, Peeters, Robin P., additional, and van Ginhoven, Tessa M., additional
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- 2023
- Full Text
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13. Antimicrobial stewardship in the primary care setting: from dream to reality?
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Avent, M. L., Cosgrove, S. E., Price-Haywood, E. G., and van Driel, M. L.
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- 2020
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14. Osteoclastogenic capacity of peripheral blood mononuclear cells is not different between women with and without osteoporosis
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Koek, W.N.H., van der Eerden, B.C.J., Alves, R.D.A.M., van Driel, M., Schreuders-Koedam, M., Zillikens, M.C., and van Leeuwen, J.P.T.M.
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- 2017
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15. A probabilistic framework for single-station location of seismicity on Earth and Mars
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Böse, M., Clinton, J.F., Ceylan, S., Euchner, F., van Driel, M., Khan, A., Giardini, D., Lognonné, P., and Banerdt, W.B.
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- 2017
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16. Seasonal Variations of Seismic Activity on Mars?
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Knapmeyer, M, Stähler, S. C, van Driel, M, Clinton, J. F, Banerdt, W, Böse, M, Ceylan, S, Charalambous, C, Garcia, R, Horleston, A, Kawamura, T, Khan, A, Lognonne, P, Panning, M, Pike, T, Scholz, J.-R, and Weber, R. C
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Space Sciences (General) - Abstract
We analyze the sequence of seismic events of different types as recorded by the SEIS instrument of the InSight mission. After several weeks without any detection, event counts started to increase at the end of May 2019. The majority of recorded events belongs to the class of 2.4 Hz events, which prominently excite a continuously observed natural resonance frequency. Comparison with expected event counts from a constant-rate Poisson process shows a repeated, step wise increase of the event rate with time. At the same time, event amplitudes, and hence magnitudes, are found to increase as well.
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- 2020
17. Single-station and single-event marsquake location and inversion for structure using synthetic Martian waveforms
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Khan, A., van Driel, M., Böse, M., Giardini, D., Ceylan, S., Yan, J., Clinton, J., Euchner, F., Lognonné, P., Murdoch, N., Mimoun, D., Panning, M., Knapmeyer, M., and Banerdt, W.B.
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- 2016
- Full Text
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18. Climate change and Australian general practice vocational education: a cross-sectional study
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Wild, K, Tapley, A, Fielding, A, Holliday, E, Ball, J, Horton, G, Blashki, G, Davey, A, van Driel, M, Turner, A, FitzGerald, K, Spike, N, Magin, P, Wild, K, Tapley, A, Fielding, A, Holliday, E, Ball, J, Horton, G, Blashki, G, Davey, A, van Driel, M, Turner, A, FitzGerald, K, Spike, N, and Magin, P
- Abstract
BACKGROUND: Climate change is a rapidly progressing threat to global health and well-being. For general practitioners (GPs) currently in training, the effects of climate change on public health will shape their future professional practice We aimed to establish the prevalence and associations of Australian GP registrars' (trainees') perceptions of climate change as it relates to public health, education, and workplaces. METHODS: A cross-sectional questionnaire-based study of GP registrars of three Australian training organizations. The questionnaire assessed attitudes regarding adverse health effects of climate change (over the next 10-20 years), and agreement with statements on (i) integrating health impacts of climate change into GP vocational training, and (ii) GPs' role in making general practices environmentally sustainable. RESULTS: Of 879 registrars who participated (response rate 91%), 50.4% (95% CI 46.8%, 54.0%) perceived a large or very large future health effect of climate change on their patients, and 61.8% (95% CI 58.6%, 65.0%) agreed that climate health impacts should be integrated within their education programme. 77.8% (95% CI 74.9%, 80.4%) agreed that GPs should have a leadership role in their practices' environmental sustainability. Multivariable associations of these attitudes included female gender, training region, and (for the latter two outcomes) perceptions of future impact of climate change on patient health. CONCLUSIONS: GP registrars are motivated to receive climate health education and engage in environmentally sustainable practice. This may primarily reflect concern for future practice and patient care.
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- 2023
19. Success factors of global goal-setting for sustainable development:Learning from the millennium development goals
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Hickmann, T, Biermann, F, Spinazzola, M, Ballard, C, Bogers, M, Forestier, O, Kalfagianni, A, Kim, R., Montesano, FS, Peek, T, Senit, CA, van Driel, M, Vijge, MJ, Yunita, A, Hickmann, T, Biermann, F, Spinazzola, M, Ballard, C, Bogers, M, Forestier, O, Kalfagianni, A, Kim, R., Montesano, FS, Peek, T, Senit, CA, van Driel, M, Vijge, MJ, and Yunita, A
- Abstract
The Millennium Development Goals (MDGs) were an important precursor to the Sustainable Development Goals (SDGs). Hence, identifying the conditions that made the MDGs successful enhances our understanding of global goal-setting and informs the global endeavour to achieve the SDGs. Drawing on a comprehensive review of 316 articles published between 2009 and 2018, we identify six factors that have enabled or hindered MDG implementation. Our analysis stresses the importance of path dependencies and shows that the MDGs catalysed changes only for those countries with sufficient resource availability, administrative capacity and economic development, as well as adequate support from external donors. National ownership and NGO pressure bolstered efforts to implement the MDGs. These findings suggest that globally agreed goals do not easily trickle down from the global to the national level. Thus, this article adopts a forward-looking perspective and draws key lessons for the current implementation of the SDGs in developing countries.
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- 2023
20. Management of Postthyroidectomy Hypoparathyroidism and Its Effect on Hypocalcemia‐Related Complications: A Meta‐Analysis.
- Author
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van Dijk, Sam P. J., van Driel, M. H. Elise, van Kinschot, Caroline M. J., Engel, Maarten F. M., Franssen, Gaston J. H., van Noord, Charlotte, Visser, W. Edward, Verhoef, Cornelis, Peeters, Robin P., and van Ginhoven, Tessa M.
- Abstract
Objective: The aim of this Meta‐analysis is to evaluate the impact of different treatment strategies for early postoperative hypoparathyroidism on hypocalcemia‐related complications and long‐term hypoparathyroidism. Data Sources: Embase.com, MEDLINE, Web of Science Core Collection, Cochrane Central Register of Controlled Trials, and the top 100 references of Google Scholar were searched to September 20, 2022. Review Methods: Articles reporting on adult patients who underwent total thyroidectomy which specified a treatment strategy for postthyroidectomy hypoparathyroidism were included. Random effect models were applied to obtain pooled proportions and 95% confidence intervals. Primary outcome was the occurrence of major hypocalcemia‐related complications. Secondary outcome was long‐term hypoparathyroidism. Results: Sixty‐six studies comprising 67 treatment protocols and 51,096 patients were included in this Meta‐analysis. In 8 protocols (3806 patients), routine calcium and/or active vitamin D medication was given to all patients directly after thyroidectomy. In 49 protocols (44,012 patients), calcium and/or active vitamin D medication was only given to patients with biochemically proven postthyroidectomy hypoparathyroidism. In 10 protocols (3278 patients), calcium and/or active vitamin D supplementation was only initiated in case of clinical symptoms of hypocalcemia. No patient had a major complication due to postoperative hypocalcemia. The pooled proportion of long‐term hypoparathyroidism was 2.4% (95% confidence interval, 1.9‐3.0). There was no significant difference in the incidence of long‐term hypoparathyroidism between the 3 supplementation groups. Conclusions: All treatment strategies for postoperative hypocalcemia prevent major complications of hypocalcemia. The early postoperative treatment protocol for postthyroidectomy hypoparathyroidism does not seem to influence recovery of parathyroid function in the long term. [ABSTRACT FROM AUTHOR]
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- 2024
- Full Text
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21. Self-consistent models of Earth’s mantle and core from long-period seismic and tidal constraints
- Author
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Kemper, J, primary, Khan, A, additional, Helffrich, G, additional, van Driel, M, additional, and Giardini, D, additional
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- 2023
- Full Text
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22. InSight: Mars Structure Service: Single-station and single-event marsquake inversions for structure using synthetic Martian waveforms
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Panning, M, Beucler, E, Drilleau, M, Khan, A, Lognonné, P, Beghein, C, Xu, H, Menina, S, Barkaoui, S, Samuel, H, Stähler, S, van Driel, M, Ceylan, S, Kenda, B, Murdoch, N, Clinton, J, Giardini, D, Smrekar, S, Stutzmann, E, and Schimmel, M
- Published
- 2019
23. InSight: Mars Structure Service: Single-station and single-event marsquake inversions for structure using synthetic Martian waveforms
- Author
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Schimmel, M, Stutzmann, E, Smrekar, S, Giardini, D, Clinton, J, Murdoch, N, Kenda, B, Ceylan, S, van Driel, M, Stähler, S, Samuel, H, Barkaoui, S, Menina, S, Xu, H, Beghein, C, Lognonné, P, Khan, A, Drilleau, M, Beucler, E, and Panning, M
- Abstract
UNKNOWN
- Published
- 2019
24. Hoofd-halsoncologie
- Author
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van Driel, M., de Bree, R., van Spil, J.A., editor, van Muilekom, H.A.M., editor, and van de Walle-van de Geijn, B.F.H., editor
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- 2013
- Full Text
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25. SEIS: Insight’s Seismic Experiment for Internal Structure of Mars
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Lognonné, P., Banerdt, W. B., Giardini, D., Pike, W. T., Christensen, U., Laudet, P., de Raucourt, S., Zweifel, P., Calcutt, S., Bierwirth, M., Hurst, K. J., Ijpelaan, F., Umland, J. W., Llorca-Cejudo, R., Larson, S. A., Garcia, R. F., Kedar, S., Knapmeyer-Endrun, B., Mimoun, D., Mocquet, A., Panning, M. P., Weber, R. C., Sylvestre-Baron, A., Pont, G., Verdier, N., Kerjean, L., Facto, L. J., Gharakanian, V., Feldman, J. E., Hoffman, T. L., Klein, D. B., Klein, K., Onufer, N. P., Paredes-Garcia, J., Petkov, M. P., Willis, J. R., Smrekar, S. E., Drilleau, M., Gabsi, T., Nebut, T., Robert, O., Tillier, S., Moreau, C., Parise, M., Aveni, G., Ben Charef, S., Bennour, Y., Camus, T., Dandonneau, P. A., Desfoux, C., Lecomte, B., Pot, O., Revuz, P., Mance, D., tenPierick, J., Bowles, N. E., Charalambous, C., Delahunty, A. K., Hurley, J., Irshad, R., Liu, Huafeng, Mukherjee, A. G., Standley, I. M., Stott, A. E., Temple, J., Warren, T., Eberhardt, M., Kramer, A., Kühne, W., Miettinen, E.-P., Monecke, M., Aicardi, C., André, M., Baroukh, J., Borrien, A., Bouisset, A., Boutte, P., Brethomé, K., Brysbaert, C., Carlier, T., Deleuze, M., Desmarres, J. M., Dilhan, D., Doucet, C., Faye, D., Faye-Refalo, N., Gonzalez, R., Imbert, C., Larigauderie, C., Locatelli, E., Luno, L., Meyer, J.-R., Mialhe, F., Mouret, J. M., Nonon, M., Pahn, Y., Paillet, A., Pasquier, P., Perez, G., Perez, R., Perrin, L., Pouilloux, B., Rosak, A., Savin de Larclause, I., Sicre, J., Sodki, M., Toulemont, N., Vella, B., Yana, C., Alibay, F., Avalos, O. M., Balzer, M. A., Bhandari, P., Blanco, E., Bone, B. D., Bousman, J. C., Bruneau, P., Calef, F. J., Calvet, R. J., D’Agostino, S. A., de los Santos, G., Deen, R. G., Denise, R. W., Ervin, J., Ferraro, N. W., Gengl, H. E., Grinblat, F., Hernandez, D., Hetzel, M., Johnson, M. E., Khachikyan, L., Lin, J. Y., Madzunkov, S. M., Marshall, S. L., Mikellides, I. G., Miller, E. A., Raff, W., Singer, J. E., Sunday, C. M., Villalvazo, J. F., Wallace, M. C., Banfield, D., Rodriguez-Manfredi, J. A., Russell, C. T., Trebi-Ollennu, A., Maki, J. N., Beucler, E., Böse, M., Bonjour, C., Berenguer, J. L., Ceylan, S., Clinton, J., Conejero, V., Daubar, I., Dehant, V., Delage, P., Euchner, F., Estève, I., Fayon, L., Ferraioli, L., Johnson, C. L., Gagnepain-Beyneix, J., Golombek, M., Khan, A., Kawamura, T., Kenda, B., Labrot, P., Murdoch, N., Pardo, C., Perrin, C., Pou, L., Sauron, A., Savoie, D., Stähler, S., Stutzmann, E., Teanby, N. A., Tromp, J., van Driel, M., Wieczorek, M., Widmer-Schnidrig, R., and Wookey, J.
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- 2019
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26. The Marsquake Service: Securing Daily Analysis of SEIS Data and Building the Martian Seismicity Catalogue for InSight
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Clinton, J., Giardini, D., Böse, M., Ceylan, S., van Driel, M., Euchner, F., Garcia, R. F., Kedar, S., Khan, A., Stähler, S. C., Banerdt, B., Lognonne, P., Beucler, E., Daubar, I., Drilleau, M., Golombek, M., Kawamura, T., Knapmeyer, M., Knapmeyer-Endrun, B., Mimoun, D., Mocquet, A., Panning, M., Perrin, C., and Teanby, N. A.
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- 2018
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27. Varkensinteractie
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van Driel, M., Langstraat, Eva, van Oosten, Eline, de Rijk, Lynn, Cornips, L., and NL-Lab
- Published
- 2022
28. 5-HIAA excretion is not associated with bone metabolism in carcinoid syndrome patients
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van Dijk, S.C., de Herder, W.W., Kwekkeboom, D.J., Zillikens, M.C., Feelders, R.A., van Schaik, R.H.N., van Driel, M., and van Leeuwen, J.P.T.M.
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- 2012
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29. Influence of rurality on general practitioner registrars' participation in their practice's after-hours roster: A cross-sectional study
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Morgan, T, Tapley, A, Davey, A, Holliday, E, Fielding, A, van Driel, M, Ball, J, Spike, N, FitzGerald, K, Morgan, S, Magin, P, Morgan, T, Tapley, A, Davey, A, Holliday, E, Fielding, A, van Driel, M, Ball, J, Spike, N, FitzGerald, K, Morgan, S, and Magin, P
- Abstract
OBJECTIVE: To investigate whether practice rurality and rural training pathway are associated with general practitioner registrars' participation in their practice's after-hours care roster. DESIGN: A cross-sectional analysis of data (2017-2019) from the Registrar Clinical Encounters in Training study, an ongoing inception cohort study of Australian general practitioner registrars. The principal analyses used logistic regression. SETTING: Three national general practitioner regional training organisations across 3 Australian states. PARTICIPANTS: General practitioner registrars in training within regional training organisations. MAIN OUTCOME MEASURE: Involvement in practice after-hours care was indicated by a dichotomous response on a 6-monthly Registrar Clinical Encounters in Training study questionnaire item. RESULTS: 1576 registrars provided 3158 observations (response rate 90.3%). Of these, 1574 (48.6% [95% confidence interval: 46.8-50.3]) involved registrars contributing to their practice's after-hours roster. In major cities, 40% of registrar terms involved contribution to their practice's after-hours roster; in regional and remote practices, 62% contributed to the after-hours roster. On multivariable analysis, both level of rurality of practice (odds ratio(OR) 1.75, P = .007; and OR 1.74, P = .026 for inner regional and outer regional/remote locations, respectively, versus major city) and rural training pathway of registrar (OR 1.65, P = .008) were significantly associated with more after-hours roster contribution. Other associations were registrars' later training stage, larger practices and practices not routinely bulk billing. Significant regional variability in after-hours care was identified (after adjusting for rurality). CONCLUSION: These findings suggest that registrars working rurally and those training on the rural pathway are more often participating in practice after-hours rosters. This has workforce implications, and implications for the educatio
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- 2022
30. Transitions in general practice training: quantifying epidemiological variation in trainees' experiences and clinical behaviours
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Tran, M, Wearne, S, Tapley, A, Fielding, A, Davey, A, van Driel, M, Holliday, E, Ball, J, FitzGerald, K, Spike, N, Magin, P, Tran, M, Wearne, S, Tapley, A, Fielding, A, Davey, A, van Driel, M, Holliday, E, Ball, J, FitzGerald, K, Spike, N, and Magin, P
- Abstract
BACKGROUND: General Practice training in Australia is delivered through the apprenticeship model. General Practice supervisors support trainees transitioning from hospital-based work towards competent independent community-based practice. The timing and manner in which support should be provided is still not well understood. This study aimed to establish the variation in clinical and educational experiences and behaviours, and location, of general practice trainees' consultations by stage of their vocational training. It was hypothesised that change is greater in earlier stages of training. METHODS: A cross-sectional analysis of data (2010-2018) from the Registrar Clinical Encounters in Training (ReCEnT) study, an ongoing cohort study of Australian GP registrars' in-consultation clinical and educational experience and behaviours. Multinomial logistic regression assessed the association of demographic, educational, and clinical factors in different stages of training. The outcome factor was the training term. RESULTS: Two thousand four hundred sixteen registrars contributed data for 321,414 patient consultations. For several important variables (seeing patients with chronic disease; new patients; seeking in-consultation information or assistance; ordering pathology and imaging; and working in a small or regional practice), odds ratios were considerably greater for comparisons of Term 1 and 3, relative to comparisons of Term 2 and 3. CONCLUSION: Differences experienced in demographic, clinical and educational factors are significantly more pronounced earlier in registrars' training. This finding has educational and training implications with respect to resource allocation, trainee supervision and curriculum design. Sociocultural learning theory enables an understanding of the impact of transitions on, and how to support, general practice trainees and supervisors.
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- 2022
31. The impact of removing financial incentives and/or audit and feedback on chlamydia testing in general practice: A cluster randomised controlled trial (ACCEPt-able)
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Peiris, D, Hocking, JS, Wood, A, Temple-Smith, M, Braat, S, Law, M, Bulfone, L, Jones, C, Van Driel, M, Fairley, CK, Donovan, B, Guy, R, Low, N, Kaldor, J, Gunn, J, Peiris, D, Hocking, JS, Wood, A, Temple-Smith, M, Braat, S, Law, M, Bulfone, L, Jones, C, Van Driel, M, Fairley, CK, Donovan, B, Guy, R, Low, N, Kaldor, J, and Gunn, J
- Abstract
BACKGROUND: Financial incentives and audit/feedback are widely used in primary care to influence clinician behaviour and increase quality of care. While observational data suggest a decline in quality when these interventions are stopped, their removal has not been evaluated in a randomised controlled trial (RCT), to our knowledge. This trial aimed to determine whether chlamydia testing in general practice is sustained when financial incentives and/or audit/feedback are removed. METHODS AND FINDINGS: We undertook a 2 × 2 factorial cluster RCT in 60 general practices in 4 Australian states targeting 49,525 patients aged 16-29 years for annual chlamydia testing. Clinics were recruited between July 2014 and September 2015 and were followed for up to 2 years or until 31 December 2016. Clinics were eligible if they were in the intervention group of a previous cluster RCT where general practitioners (GPs) received financial incentives (AU$5-AU$8) for each chlamydia test and quarterly audit/feedback reports of their chlamydia testing rates. Clinics were randomised into 1 of 4 groups: incentives removed but audit/feedback retained (group A), audit/feedback removed but incentives retained (group B), both removed (group C), or both retained (group D). The primary outcome was the annual chlamydia testing rate among 16- to 29-year-old patients, where the numerator was the number who had at least 1 chlamydia test within 12 months and the denominator was the number who had at least 1 consultation during the same 12 months. We undertook a factorial analysis in which we investigated the effects of removal versus retention of incentives (groups A + C versus groups B + D) and the effects of removal versus retention of audit/feedback (group B + C versus groups A + D) separately. Of 60 clinics, 59 were randomised and 55 (91.7%) provided data (group A: 15 clinics, 11,196 patients; group B: 14, 11,944; group C: 13, 11,566; group D: 13, 14,819). Annual testing decreased from 20.2% to 11.7
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- 2022
32. Provision of other medical work by Australian early-career general practitioners: a cross-sectional study.
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Goodyear-Smith, F, Bentley, M, FitzGerald, K, Fielding, A, Moad, D, Tapley, A, Davey, A, Holliday, E, Ball, J, Kirby, C, Turnock, A, Spike, N, van Driel, M, Magin, P, Goodyear-Smith, F, Bentley, M, FitzGerald, K, Fielding, A, Moad, D, Tapley, A, Davey, A, Holliday, E, Ball, J, Kirby, C, Turnock, A, Spike, N, van Driel, M, and Magin, P
- Abstract
Introduction There is a trend towards GPs diversifying their role by working in health areas beyond general practice. However, little is known about whether this trend is apparent among early-career GPs once they make the transition from training to independent practice. Aim To describe the prevalence of and characteristics associated with early-career GPs providing other medical work. Methods A cross-sectional questionnaire-based study of GPs ('alumni') who had fellowed within the past 2 years from three of Australia's nine regional training programs. The outcome factor was provision of medical work in addition to clinical general practice. Associations of independent variables (encompassing alumni demographics, current practice characteristics and vocational training experience) with the outcome were estimated using univariate and multivariable logistic regression. Results Of 339 responding alumni, 111 (33%) undertook other regular medical work. Sixty-five (59%) of these were in medical education. In multivariable analysis, factors associated with providing other medical work were having a spouse/partner not in the workforce (odds ratio (OR) 5.13), having done any training part-time (OR 2.67), providing two or more of home visits, nursing home visits and after-hours care (OR 2.20), working fewer sessions per week (OR 0.74), and currently working in an area of lower socio-economic status (OR 0.84). Having dependent children (OR 0.27), and being female (OR 0.43) were associated with not providing other medical work. Discussion In this study, many early-career GPs are providing other medical work, particularly medical education. Acknowledging this is important to general practice workforce planning and education policy.
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- 2022
33. The Registrar Clinical Encounters in Training (ReCEnT) cohort study: updated protocol.
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Davey, A, Tapley, A, van Driel, M, Holliday, E, Fielding, A, Ball, J, Mulquiney, K, Fisher, K, Spike, N, Clarke, L, Moad, D, Ralston, A, Patsan, I, Mundy, B, Turner, A, Tait, J, Tuccitto, L, Roberts, S, Magin, P, Davey, A, Tapley, A, van Driel, M, Holliday, E, Fielding, A, Ball, J, Mulquiney, K, Fisher, K, Spike, N, Clarke, L, Moad, D, Ralston, A, Patsan, I, Mundy, B, Turner, A, Tait, J, Tuccitto, L, Roberts, S, and Magin, P
- Abstract
BACKGROUND: During vocational general practice training, the content of each trainee's (in Australia, registrars') in-consultation clinical experience is expected to entail a breadth of conditions that exemplify general practice, enabling registrars to gain competency in managing common clinical conditions and common clinical scenarios. Prior to the Registrar Clinical Encounters in Training (ReCEnT) project there was little research into the content of registrars' consultations despite its importance to quality of training. ReCEnT aims to document the consultation-based clinical and educational experiences of individual Australian registrars. METHODS: ReCEnT is an inception cohort study. It is comprised of closely interrelated research and educational components. Registrars are recruited by participating general practice regional training organisations. They provide demographic information about themselves, their skills, and their previous training. In each of three 6-month long general practice training terms they provide data about the practice where they work and collect data from 60 consecutive patient encounters using an online portal. Analysis of data uses standard techniques including linear and logistic regression modelling. The ReCEnT project has approval from the University of Newcastle Human Research Ethics Committee, Reference H-2009-0323. DISCUSSION: Strengths of the study are the granular detail of clinical practice relating to patient demographics, presenting problems/diagnoses, medication decisions, investigations requested, referrals made, procedures undertaken, follow-up arranged, learning goals generated, and in-consultation help sought; the linking of the above variables to the presenting problems/diagnoses to which they pertain; and a very high response rate. The study is limited by not having information regarding severity of illness, medical history of the patient, full medication regimens, or patient compliance to clinical decisions made at t
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- 2022
34. SEIS achievement for Mars Seismology after 1000 sols of seismic monitoring
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Lognonne, P., Banerdt, William B., Giardini, D., Panning, M.P., Pike, W.T., Barakoui, S., Böse, Maren, Brinkman, Nienke, Charalambous, C., Compaire, Nicolas, Dahmen, N., Drilleau, M., Fernando, B., Garcia, R., Hobiger, M., Huang, Q., Hurst, K., Jacob, A., Karakostas, F., Kawamura, T., Kedar, S., Khan, A., Kim, D., Knapmeyer‐Endrun, Brigitte, Knapmeyer, Martin, Li, Jiaqi, Menina, S., Murdoch, N., Onodera, K, Perrin, C, Pou, L., Rajsic, A., Samuel, H., Savoie, D., Schimmel, M., Sollberger, D., Stähler, S., Stott, A., Gyalay, S, Van Driel, M., Wojcicka, N., Zweifel, P., Beghein, C., Beucler, E., Antonangeli, D., Banfield, D., Bowles, Neil, Bozdag, E., Christensen, Ulrich, Clinton, J., Collins, G., Daubar, I., Irving, J. C. E., Lorenz, R. D., Margerin, L., Michaut, Chloe, Mimoun, D., Nimmo, Francis, Plesa, Ana-Catalina, Schmerr, N., Smrekar, S., Spiga, A., Teanby, N., Tromp, J., Weber, R., Wieczorek, M., Agard, C., Barrett, Elizabeth, Berenguer, J.L., Ceylan, S., Conejero, V., Duran, C., Froment, M., Horleston, A., Ferrier, C., Fuji, N., Gabsi, T., Gaudin, E., Jaillant, B., Jullien, A., Meunier, F., Pardo, C., ten Pierick, J., Plasman, M., Rochas, L., Sainton, G., Stutzmann, Éléonore, Xu, Z., Yana, Charles, Zenhäusern, Geraldine, and InSight/SEIS, Science Team
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Mars InSight SEIS - Published
- 2022
35. Seasonal seismic activity on Mars
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Knapmeyer, Martin, Stähler, S., Daubar, I., Forget, F., Spiga, A., Pierron, T., Van Driel, M., Banfield, D., Hauber, Ernst, Grott, Matthias, Müller, Nils, Perrin, C., Jacob, A., Lucas, A., Knapmeyer-Endrun, B., Newman, C., Panning, M.P., Weber, R.C., Calef, F., Böse, M., Ceylan, S., Charalambous, C., Clinton, J., Dahmen, N., Giardini, D., Horleston, A., Kawamura, T., Khan, A., Mainsant, G., Plasman, M., Lemmon, M., Lorenz, R. D., Pike, W.T., Scholz, J.-R., Lognonne, P., Banerdt, B., Deutsches Zentrum für Luft- und Raumfahrt [Berlin] (DLR), Geological Institute (ETHZ), Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich] (ETH Zürich), Laboratoire de Météorologie Dynamique (UMR 8539) (LMD), Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-École des Ponts ParisTech (ENPC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris, École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL), Laboratoire de Planétologie et Géodynamique [UMR 6112] (LPG), Université d'Angers (UA)-Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique du Globe de Paris (IPGP), Institut national des sciences de l'Univers (INSU - CNRS)-IPG PARIS-Université de La Réunion (UR)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Jet Propulsion Laboratory (JPL), NASA-California Institute of Technology (CALTECH), and Johns Hopkins University (JHU)
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Mars ,Elysium Planitia ,InSight ,seasonal seismic activity ,Phobos ,[SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] ,Statistik ,[SDU.ASTR.EP]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP] ,Marsbeben ,ComputingMilieux_MISCELLANEOUS - Abstract
The rate of occurrence of High Frequency (HF) marsquakes, as recorded by InSight at Homestead Hollow, Elysium Planitia, increased after about Ls =33°, and ceased almost completely by Ls =187°, following an apparently seasonal variation with a peak rate near aphelion. We define seismic rate models based on the declination of the Sun, annual solar tides, and the annual CO2 cycle as measured by atmospheric pressure. Evaluation of Akaike weights and evidence ratios shows that the declination of the Sun is the most likely, and the CO2 cycle the least likely driver of this seismic activity, although the discrimination is weak, and the occurrence of a few events in August 2020 is in favor for a triggering by CO2 ice load. We also show that no periodicity related to Phobos' orbit is present in the HF event sequence. Event rate forecasts are presented to allow further discrimination of candidate mechanisms from future observations. ISSN:0012-821X ISSN:1385-013X
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- 2021
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36. A spectral element approach to computing normal modes
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Kemper, J, primary, van Driel, M, additional, Munch, F, additional, Khan, A, additional, and Giardini, D, additional
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- 2021
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37. Natural killer cells in patients with severe chronic fatigue syndrome
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Brenu, E. W., Hardcastle, S. L., Atkinson, G. M., van Driel, M. L., Kreijkamp-Kaspers, S., Ashton, K. J., Staines, D. R., and Marshall-Gradisnik, S. M.
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- 2013
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38. Visual Analytics for Hypothesis-Driven Exploration in Computational Pathology
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Corvo, A., primary, Caballero, H. S. Garcia, additional, Westenberg, M. A., additional, van Driel, M. A., additional, and van Wijk, J. J., additional
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- 2021
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39. The Polarization of Ambient Noise on Mars
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Stutzmann, E., Schimmel, Martin, Lognonne, P., Horleston, Anna, Ceylan, S., van Driel, M., Stahler, Simon, Banerdt, B., Calvet, Marie, Charalambous, C., Clinton, John, Drilleau, M., Fayon, Lucile, Garcia, Raphael, Jacob, A., Kawamura, T., Kenda, B., Margerin, Ludovic, Murdoch, N., and Panning, Mark
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Mars ,Seismology ,Physics::Geophysics - Abstract
vEGU21: Gather Online | 19–30 April 2021, Seismic noise recorded at the surface of Mars has been monitored since February 2019, using the InSight seismometers.This noise can reach -200 dB and is 500 times lower than on Earth at night and it increases of 30 dB during the day. We analyze its polarization as a function of time and frequency in the band 0.03-1Hz. We use the degree of polarization to extract signals with stable polarization independent of their amplitude and type of polarization. We detect polarized signals at all frequencies and all times. Glitches correspond to linear polarized signals which are more abundant during the night. For signals with elliptical polarization, the ellipse is in the horizontal plane below 0.3 Hz (LF). Above 0.3 Hz (HF) and except in the evening, the ellipse is in the vertical plane and the major axis is tilted. While polarization azimuths are different in the two frequency bands, they both vary as a function of local hour and season. They are also correlated with wind direction, particularly during the daytime. We investigate possible aseismic and seismic origins of the polarized signals. Lander or tether noise can be discarded. Pressure fluctuations transported by wind may explain part of the HF polarization but not the tilt of the ellipse. This tilt can be obtained if the source is an acoustic emission coming from high altitude at critical angle. Finally, in the evening when the wind is low, the polarized signals may correspond to the seismic wavefield of the Mars background noise.
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- 2021
40. One Martian Year of Seismic Monitoring of Mars by InSight: SEIS Results and Perspectives for the Extended Mission
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Lognonne, P., Banerdt, B., Giardini, D., Panning, M., Pike, T., Antonangeli, D., Ballestra, J., Banfield, D., Beghein, C., Beucler, E., Bowles, Neil, Bozdag, E., Ceylan, S., Charalambous, C., Christensen, U., Clinton, J., Compaire, Nicolas, Collins, G., Dahmen, N., Daubar, I., van Driel, M, Drilleau, M., Fernando, B., Froment, M., Garcia, R., Irving, J., Khan, A., Kawamura, T., Kedar, S., Kenda, B., Knapmeyer-Endrun, B., Lorenz, R. D., Margerin, L., Martire, L., Michaut, C., Mimoun, D., Murdoch, N., Nimmo, F., Perrin, C, Plesa, Ana-Catalina, Schmerr, N., Scholz, J.-R., Smrekar, S., Sollberger, D., Spiga, A., Stähler, S., Stutzmann, Éléonore, Teanby, N., Tromp, J., Weber, R., Wieczorek, M., Wojcicka, N., Xu, H., Agard, C., Barrett, Elizabeth, Berenguer, J.L., Böse, Maren, Conejero, V., Horleston, A., Hurst, K., Ferrier, C., Fuji, N., Gabsi, T., Gaudin, E., Jaillant, B., Jullien, A., Karakostas, F., Labrot, P., Meunier, F., Pardo, C., ten Pierick, J., Plasman, Matthieu, Rochas, L., Sauron, A., Sainton, G., Xu, Z., Yana, Charles, and InSight/SEIS, Science Team
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Mars ,SEIS ,InSight - Published
- 2021
41. Seismic detection of the martian core by InSight
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Stähler, S., Ceylan, S., Duran, Andrea Cecilia, Garcia, Raphaël F., Giardini, D., Huang, Quancheng, Khan, Amir, Kim, Doyeon, Lognonne, P., Maguire, R., Marusiak, A, Plesa, Ana-Catalina, Samuel, H., Schmerr, N., Schimmel, M., Sollberger, D., Stutzmann, Éléonore, Antonangeli, D., Clinton, J., van Driel, M, Drilleau, M., Gudkova, T., Horleston, A., Irving, J., Kawamura, T., Lekic, V., Myhill, R., Nimmo, F., Panning, M., Rivoldini, A., Schmelzbach, C., Stanley, S., Weber, Renee, Xu, Zongbo, Zenhäusern, Geraldine, and Banerdt, B.
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Core detection ,Mars ,Seismic measurements ,InSight - Abstract
A plethora of geophysical, geo- chemical, and geodynamical observations indicate that the terrestrial planets have differentiated into silicate crusts and mantles that surround a dense core. The latter consists primarily of Fe and some lighter alloying elements (e.g., S, Si, C, O, and H) [1]¿. The Martian meteorites show evidence of chalcophile element depletion, suggesting that the otherwise Fe-Ni- rich core likely contains a sulfide component, which influences physical state.
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- 2021
42. The association between Peyronie's and Dupuytren's disease
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Nugteren, H M, Nijman, J M, de Jong, I J, and van Driel, M F
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- 2011
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43. Assessment of immune function after short-term administration of recombinant human growth hormone in healthy young males
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Ramos, S. B., Brenu, E. W., Christy, R., Gray, B., McNaughton, L., Tajouri, L., Van Driel, M., and Marshall-Gradisnik, S. M.
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- 2011
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44. Male sexual function and lower urinary tract symptoms after laparoscopic total mesorectal excision
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Breukink, S. O., van Driel, M. F., Pierie, J. P. E. N., Dobbins, C., Wiggers, T., and Meijerink, W. J. H. J.
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- 2008
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45. The interior of Mars as seen by InSight (Invited)
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Staehler, Simon C., Khan, A., Knapmeyer‐Endrun, Brigitte, Panning, Mark P., Banerdt, William B., Lognonné, P., Giardini, Domenico, Antonangeli, D., Beucler, E., Bissig, F., Bozdag, E., Brinkmann, N., Ceylan, S., Charalambous, C., Clinton, John F., Compaire, Nicolas, Dahmen, N. L., Davis, P., van Driel, M., Drilleau, M., Garcia, Raphael F., Huang, Quancheng, Joshi, Rakshit, Gudkova, T., Irving, Jessica C. E., Johnson, C., Kawamura, T., Kim, Doyeon, Knapmeyer, Martin, Maguire, R., Lekic, Vedran, Margerin, L., Marusiak, A, McLennan, S M, Mittelholz, A., Michaut, Chloe, Plasman, M., Pan, L., Duran, C., Perrin, C., Pike, T., Plesa, Ana-Catalina, Pinot, Baptiste, Rivoldini, A., Scholz, J.-R., Schimmel, Martin, Schmerr, N., Stutzmann, Éléonore, Samuel, H., Smrekar, S., Spohn, Tilman, Tauzin, B., Tharimena, S., Widmer-Schnidrig, R, Wieczorek, M., Xu, Zongbo, Zenhäusern, Geraldine, Karakostas, F., and InSight, Science Team
- Abstract
InSight is the first planetary mission dedicated to exploring the whole interior of a planet using geophysical methods, specifically seismology and geodesy. To this end, we observed seismic waves of distant marsquakes and inverted for interior models using differential travel times of phases reflected at the surface (PP, SS...) or the core mantle-boundary (ScS), as well as those converted at crustal interfaces. Compared to previous orbital observations1-3, the seismic data added decisive new insights with consequences for the formation of Mars: The global average crustal thickness of 24-75 km is at the low end of pre-mission estimates5. Together with the the thick lithosphere of 450-600 km5, this requires an enrichment of heat-producing elements in the crust by a factor of 13-20, compared to the primitive mantle. The iron-rich liquid core is 1790-1870 km in radius6, which rules out the existence of an insulating bridgmanite-dominated lower mantle on Mars. The large, and therefore low-density core needs a high amount of light elements. Given the geochemical boundary conditions, Sulfur alone cannot explain the estimated density of ~6 g/cm3 and volatile elements, such as oxygen, carbon or hydrogen are needed in significant amounts. This observation is difficult to reconcile with classical models of late formation from the same material as Earth. We also give an overview of open questions after three years of InSight operation on the surface of Mars, such as the potential existence of an inner core or compositional layers above the CMB
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- 2021
46. Marsquake Activity Driven by the Sun?
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Knapmeyer, Martin, Stähler, S., Daubar, I., Forget, F., Spiga, A., Pierron, T., van Driel, M, Banfield, D., Hauber, Ernst, Grott, Matthias, Müller, Nils, Perrin, C., Jacob, A., Lucas, A., Knapmeyer-Endrun, B., Newman, C., Panning, M., Weber, R., Calef, F, Böse, Maren, Ceylan, S., Charalambous, C., Clinton, J., Giardini, D., Horleston, A., Kawamura, T., Khan, A., Lemmon, M., Lorenz, R. D., Pike, W.T., Scholz, J.-R., Lognonne, P., and Banerdt, B.
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Mars InSight Marsbeben - Published
- 2021
47. On the modelling of self-gravitation for full 3-D global seismic wave propagation
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van Driel, M, primary, Kemper, J, additional, and Boehm, C, additional
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- 2021
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48. Seismic Velocity Variations in a 3D Martian Mantle: Implications for the InSight Measurements
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Plesa, A.‐C., primary, Bozdağ, E., additional, Rivoldini, A., additional, Knapmeyer, M., additional, McLennan, S. M., additional, Padovan, S., additional, Tosi, N., additional, Breuer, D., additional, Peter, D., additional, Stähler, S., additional, Wieczorek, M. A., additional, van Driel, M., additional, Khan, A., additional, and Spohn, T., additional
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- 2021
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49. InSight seismic data from Mars: Effect and treatment of transient data disturbances
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Widmer-Schnidrig, Rudolf, Scholz, J. R., Davis, Paul, Lognonné, P., Pinot, Baptiste, García, Raphael, Hurst, K., Pou, Laurent, Nimmo, F., Barkaoui, Salma, De Raucourt, Sebastien, Knapmeyer‐Endrun, Brigitte, Knapmeyer, M., Orhand-Mainsant, Guenolé, Compaire, Nicolas, Cuvier, Arthur, Beucler, E., Bonnin, Mickaël J. A., Joshi, Rakshit, Sainton, G., Stutzmann, E., Schimmel, Martin, Horleston, Anna C., Böse, M., Ceylan, S., Clinton, John F., van Driel, M., Kawamura, T., Khan, A., Staehler, Simon C., Giardini, Domenico, Charalambous, C., Stott, Alexander, Pike, William T., Christensen, U., and Banerdt, William B.
- Subjects
Seismicity ,Mars - Abstract
The instrument package SEIS (Seismic Experiment for Internal Structure) with the two co-located seismometers VBB and SP is installed on the surface of Mars as part of NASA's InSight mission. When compared to terrestrial installations, SEIS is deployed in a very harsh wind and temperature environment that leads to inevitable degradation of the quality of the recorded data. The daily atmospheric temperature variations of approx. 80K are attenuated by different insulation layers to approx. 15K peak-to-peak at the sensor level. Typical wind speeds vary between 0 and 5 m/s leading to a diurnal variation in the broad-band rms noise level by two orders of magnitude. One ubiquitous artifact in the raw broad-band data is an abundance of one-sided, transient pulses often accompanied by high-frequency spikes. We show that these pulses, which we term "glitches", can be modeled as the response of the instrument to a step in acceleration, while the spikes can be modeled as the response to a simultaneous step in displacement. We attribute the glitches primarily to intermittent stress relaxation events internal to SEIS caused by the large diurnal temperature variations to which the instrument is exposed during a Martian sol. Only a small fraction of glitches correspond to a motion of the SEIS package as a whole caused by minuscule tilts of the instrument. Whilst such kind of data disturbances are typically discarded when occurring in terrestrial data, this is no option for the data returned from the Red Planet. We therefore do not only demonstrate their effects on the seismic data and analyze their origins, but also propose algorithms that are able to detect and remove many of these (mostly) non-seismic signals. We further published our codes (both Python and MATLAB) so that interested researchers can make their own choices on how to treat the data and to which extent.
- Published
- 2020
50. The Institution of International Order: From the League of Nations to the United Nations, edited by Jackson, Simon, & Alanna O’Malley
- Author
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van Driel, M., Global Sustainability Governance, and Environmental Governance
- Subjects
League of Nations ,United Nations ,Political Science and International Relations ,International Order ,SDGs ,History of IR - Published
- 2020
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