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463 results on '"Haelterman, M."'

1. Vector modulation instability induced by vacuum fluctuations in highly birefringent fibers in the anomalous dispersion regime

Author

Amans, D., Brainis, E., Haelterman, M., Emplit, Ph., and Massar, S.

Subjects
Physics - Optics
Abstract

We report a detailed experimental study of vector modulation instability in highly birefringent optical fibers in the anomalous dispersion regime. We prove that the observed instability is mainly induced by vacuum fluctuations. The detuning of the spectral peaks agrees with linear perturbation analysis. The exact shape of the spectrum is well reproduced by numerical integration of stochastic nonlinear Schrodinger equations describing quantum propagation., Comment: 11 pages, 4 figures, to be published in Optics Letters

Published
2005
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2. Experimental quantum key distribution over highly noisy channels

Author

Lamoureux, L. P., Brainis, E., Cerf, N., Emplit, Ph., Haelterman, M., and Massar, S.

Subjects
Quantum Physics
Abstract

Error filtration is a method for encoding the quantum state of a single particle into a higher dimensional Hilbert space in such a way that it becomes less sensitive to phase noise. We experimentally demonstrate this method by distributing a secret key over an optical fiber whose noise level otherwise precludes secure quantum key distribution. By filtering out the phase noise, a bit error rate of 15.3% +/- 0.1%, which is beyond the security limit, can be reduced to 10.6% +/- 0.1%, thereby guaranteeing the cryptographic security., Comment: 4 pages, 2 figures

Published
2004
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3. Optical implementation of Deutsch-Jozsa and Bernstein-Vazirani quantum algorithms in eight dimensions

Author

Brainis, E., Lamoureux, L. -P., Cerf, N. J., Emplit, Ph., Haelterman, M., and Massar, S.

Subjects
Quantum Physics
Abstract

We report on a fiber-optics implementation of the Deutsch-Jozsa and Bernstein-Vazirani quantum algorithms for 8-point functions. The measured visibility of the 8-path interferometer is about 97.5%. Potential applications of our setup to quantum communication or cryptographic protocols using several qubits are discussed., Comment: 5 pages RevTex, 1 figure (encapsulated Postscript)

Published
2002
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7. Experimental Study of Modulational Instability and Vector Solitons in Optical Fibers

Author

Millot, G., Pitois, S., Dudley, J. M., Haelterman, M., Beig, R., editor, Englert, B. -G., editor, Frisch, U., editor, Hänggi, P., editor, Hepp, K., editor, Hillebrandt, W., editor, Imboden, D., editor, Jaffe, R. L., editor, Lipowsky, R., editor, v. Löhneysen, H., editor, Ojima, I., editor, Sornette, D., editor, Theisen, S., editor, Weise, W., editor, Wess, J., editor, Zittartz, J., editor, Porsezian, K., editor, and Kuriakose, V. C., editor

Published
2003
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17. Towards actionable international comparisons of health system performance: expert revision of the OECD framework and quality indicators

Author

Carinci, F., Van Gool, K., Mainz, J., Veillard, J., Pichora, E. C., Januel, J. M., Arispe, I., Kim, S. M., Klazinga, N.S., Haelterman, M., Meeus, P., Lacroix, J., Cenek, J., Barsøe, C.R., Grau, K., Rooväli, L., Hämaläinen, P., Garcia, V., Grenier, C., Le Cossec, B., Marbach, M., Scheidt-Nave, C., Mulholland, D., Ekka-Zohar, A., Kumakawa, T., Okamoto, E., Byeon, E.H., Kim, K.H., Park, C.S., Lepiksone, J., Berthet, F., Margue, C., Van Den Berg, M., Lindahl, A.K., Narbuvold, H., Dudzik-Urbaniak, E., Boto, P., Lim, E.K., Mok, W.Y., Pribakovic, R., Gogorcena, M. A., Aggestam, M., Köster, M., Lawrence, M., Langenegger, M., Fehst, K., Yilmaz, S., Everard, K., and Raleigh, V.

Published
2015
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23. Towards actionable international comparisons of health system performance: expert revision of the OECD framework and quality indicators

Author

Carinci, F., Van Gool, K., Mainz, J., Veillard, J., Pichora, E. C., Januel, J. M., Arispe, I., Kim, S. M., Klazinga, N.S., Haelterman, M., Meeus, P., Lacroix, J., Cenek, J., Barsøe, C.R., Grau, K., Rooväli, L., Hämaläinen, P., Garcia, V., Grenier, C., Le Cossec, B., Marbach, M., Scheidt-Nave, C., Mulholland, D., Ekka-Zohar, A., Kumakawa, T., Okamoto, E., Byeon, E.H., Kim, K.H., Park, C.S., Lepiksone, J., Berthet, F., Margue, C., Van Den Berg, M., Lindahl, A.K., Narbuvold, H., Dudzik-Urbaniak, E., Boto, P., Lim, E.K., Mok, W.Y., Pribakovic, R., Gogorcena, M. A., Aggestam, M., Köster, M., Lawrence, M., Langenegger, M., Fehst, K., Yilmaz, S., Everard, K., and Raleigh, V.

Abstract

Objective To review and update the conceptual framework, indicator content and research priorities of the Organisation for Economic Cooperation and Development's (OECD) Health Care Quality Indicators (HCQI) project, after a decade of collaborative work. Design A structured assessment was carried out using a modified Delphi approach, followed by a consensus meeting, to assess the suite of HCQI for international comparisons, agree on revisions to the original framework and set priorities for research and development. Setting International group of countries participating to OECD projects. Participants Members of the OECD HCQI expert group. Results A reference matrix, based on a revised performance framework, was used to map and assess all seventy HCQI routinely calculated by the OECD expert group. A total of 21 indicators were agreed to be excluded, due to the following concerns: (i) relevance, (ii) international comparability, particularly where heterogeneous coding practices might induce bias, (iii) feasibility, when the number of countries able to report was limited and the added value did not justify sustained effort and (iv) actionability, for indicators that were unlikely to improve on the basis of targeted policy interventions. Conclusions The revised OECD framework for HCQI represents a new milestone of a long-standing international collaboration among a group of countries committed to building common ground for performance measurement. The expert group believes that the continuation of this work is paramount to provide decision makers with a validated toolbox to directly act on quality improvement strategies

Published
2017

24. Improving the quality of the intensive care follow-up of ventilated patients during a national registration program

Author

Reper, P, Dicker, D, Damas, P, Aelvoet, W, Huyghens, L, Haelterman, M, UCL - SSS/IREC/MONT - Pôle Mont Godinne, UCL - (MGD) Services des soins intensifs, Public Health Sciences, Supporting clinical sciences, Research Group Critical Care and Cerebral Resuscitation, and Public Health Care

Subjects
Program evaluation, Cross Infection/epidemiology, medicine.medical_treatment, Psychological intervention, law.invention, 0302 clinical medicine, Belgium, law, Pneumonia, Ventilator-Associated/epidemiology, Medicine, 030212 general & internal medicine, Registries, Medicine(all), Hospital-acquired infections, Cross Infection, Pneumonia, Ventilator-Associated, General Medicine, Guideline Adherence/statistics & numerical data, Intensive care unit, Quality Improvement, Checklist, Intensive Care Units, Care bundle, ventilator-associated pneumonia (VAP), Evidence-Based Practice, Procedural intervention, Practice Guidelines as Topic, Intensive Care Units/statistics & numerical data, Guideline Adherence, Artificial ventilation, medicine.medical_specialty, Evidence-based practice, Respiration, Artificial/statistics & numerical data, Medical Staff, Hospital/education, Critical Care, 03 medical and health sciences, Ventilator-associated pneumonia (VAP), Intensive care, Medical Staff, Hospital, Humans, Critical Care/standards, Intensive care medicine, Belgium/epidemiology, Evidence-Based Practice/organization & administration, Retrospective Studies, business.industry, Public Health, Environmental and Occupational Health, 030208 emergency & critical care medicine, Retrospective cohort study, Educational intervention, bacterial infections and mycoses, Respiration, Artificial, respiratory tract diseases, Feasibility Studies, business, Program Evaluation
Abstract

OBJECTIVES: The Belgian Public Health Organization is concerned with rates of hospital-acquired infections like ventilator-associated pneumonia (VAP). Implementing best practice guidelines for these nosocomial infections has variable success in the literature. This retrospective study was undertaken to see whether implementation of the evidence-based practices as a bundle was feasible, would influence compliance, and could reduce the rates of VAP. STUDY DESIGN: We utilized easily collectable data about regular care to rapidly assess whether interventions already in place were effectively successfully applied. This avoided cumbersome data collection and review. METHODS: Retrospective compliance rates and VAP ratios were compared using z tests with P-values < 0.05 considered statistically significant. This data review attempted to examine the impact of education campaigns, staff meetings, in-services, physician checklist, nurse checklist, charge nurse checklist implementation, systematic VAP bundle application, and systematic protocols for oral care and sedation protocols. Additionally, VAP ratio could be registered by the participating centers. RESULTS: A total of 10,211 intensive care unit (ICU) patients were included in the study which represents 66,817 ICU days under artificial ventilation with an endotracheal tube. The general compliance for VAP bundle raised from VAP was 61% in February 2012 and 74.16% in December 2012 (P < 0.001). The incidence rate of VAP went from 8.34 occurrences/1000 vent days in 2009 to 4.78 occurrences/1000 vent days in 2012 (P < 0.001-Pearson test). CONCLUSIONS: Efforts to improve physician and staff education, and checklist implementation resulted in an increase in compliance for VAP bundle and a decrease in VAP ratio. This study confirms the applicability of best practice guidelines about regular care but results on VAP incidence have to be confirmed.

Published
2016

26. Transverse effects in optical bistability with the nonlinear Fabry–Pérot étalon: A new theoretical approach.

Author

Haelterman, M., Tolley, M. D., and Vitrant, G.

Subjects
*FABRY-Perot interferometers, *OPTICAL instruments
Abstract

Presents a theoretical approach for the transverse effects in optical bistability with the nonlinear Fabry-Pérot (FP) étalon. Development of the theory of the linear FP; Illustration of the FP étalon; Numerical solution of the approach in the situation of normal incidence.

Published
1990
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28. Development of clinical pharmacy in Belgian hospitals through pilot projects funded by the government

Author

Somers, A., Spinewine, A., Spriet, I., Steurbaut, S., Tulkens, P., Hecq, J. D., Willems, L., Robays, H., Dhoore, M., Yaras, H., Vanden Bremt, I., and Haelterman, M.

Abstract

AbstractObjectivesThe goal is to develop clinical pharmacy in the Belgian hospitals to improve drug efficacy and to reduce drug-related problems.MethodsFrom 2007 to 2014, financial support was provided by the Belgian federal government for the development of clinical pharmacy in Belgian hospitals. This project was guided by a national Advisory Working Group. Each funded hospital was obliged to describe yearly its clinical pharmacy activities.ResultsIn 2007, 20 pharmacists were funded in 28 pilot hospitals; this number was doubled in 2009 to 40 pharmacists over 54 institutions, representing more than half of all acute Belgian hospitals. Most projects (72%) considered patient-related activities, whereas some projects (28%) had a hospital-wide approach. The projects targeted patients at admission (30%), during hospital stay (52%) or at discharge (18%). During hospital stay, actions were mainly focused on geriatric patients (20%), surgical patients (15%), and oncology patients (9%). Experiences, methods, and tools were shared during meetings and workshops. Structure, process, and outcome indicators were reported and strengths, weaknesses, opportunities, and threats were described. The yearly reports revealed that the hospital board was engaged in the project in 87% of the cases, and developed a vision on clinical pharmacy in 75% of the hospitals. In 2014, the pilot phase was replaced by structural financing for clinical pharmacy in all acute Belgian hospitals.ConclusionThe pilot projects in clinical pharmacy funded by the federal government provided a unique opportunity to launch clinical pharmacy activities on a broad scale in Belgium. The results of the pilot projects showed clear implementation through case reports, time registrations, and indicators. Tools for clinical pharmacy activities were developed to overcome identified barriers. The engagement of hospital boards and the results of clinical pharmacy activities persuaded the government to start structural financing of clinical pharmacy.

Published
2019
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31. Nonlinear wave guiding in nematic liquid crystals

Author

Beeckman, Jeroen, Neyts, Kristiaan, HUTSEBAUT, X, HAELTERMAN, M, GLOGAROVA, M, PALFFY-MUHORAY, P, and COPIC, M

Subjects
nematic liquid crystals, Technology and Engineering, spatial optical solitons, optical waveguiding, optical nonlinearity
Published
2007

32. Observation of the out-coupling of a nematicon

Author

Beeckman, Jeroen, Neyts, Kristiaan, HUTSEBAUT, X, and HAELTERMAN, M

Subjects
Technology and Engineering, Spatial solitons, beam characteristics, optical nonlinearity
Published
2006

33. Guides photoinduits par solitons dans des matériaux ferroélectriques

Author

Chauvet, M., Maillotte, H., Coda, V., Fazio, E., Cambournac, Cyril, Haelterman, M., Salamo, G., Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174) (FEMTO-ST), Université de Technologie de Belfort-Montbeliard (UTBM)-Ecole Nationale Supérieure de Mécanique et des Microtechniques (ENSMM)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Centre National de la Recherche Scientifique (CNRS), and Université libre de Bruxelles (ULB)

Subjects
[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics]
Published
2005

34. Raman–induced power tilt in arbitrarly large wavelength–division–multiplexed systems

Author

Vanholsbeeck, F., Coen, S., Emplit, Ph., Haelterman, M., Sylvestre, T., Université libre de Bruxelles (ULB), Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174) (FEMTO-ST), Université de Technologie de Belfort-Montbeliard (UTBM)-Ecole Nationale Supérieure de Mécanique et des Microtechniques (ENSMM)-Université de Franche-Comté (UFC), and Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics]
Published
2005

35. Coupled–mode analysis of stimulated Raman scattering and four–wave mixing in wavelength–division multiplexed systems

Author

Vanholsbeeck, F., Coen, S., Emplit, Ph., Haelterman, M., Sylvestre, T., Université libre de Bruxelles (ULB), Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174) (FEMTO-ST), Université de Technologie de Belfort-Montbeliard (UTBM)-Ecole Nationale Supérieure de Mécanique et des Microtechniques (ENSMM)-Université de Franche-Comté (UFC), and Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics]
Published
2005

36. Observation expérimentale du soliton elliptique fondamental en milieu Kerr isotrope

Author

Delque, M., Sylvestre, T., Maillotte, H., Cambournac, Cyril, Kockaert, P., Haelterman, M., Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174) (FEMTO-ST), Université de Technologie de Belfort-Montbeliard (UTBM)-Ecole Nationale Supérieure de Mécanique et des Microtechniques (ENSMM)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Centre National de la Recherche Scientifique (CNRS), Institute of Atomic Physics, and Université de Roumanie

Published
2005

37. Photo-induction de guides circulaires monomodes dans LiNbO3

Author

Chauvet, M., Fazio, E., JÄger, R., Gorza, S.P, Ramadan, W., Renzi, F., Rinaldi, R., Vlad, V.-I., Bertolotti, M., Cambournac, Cyril, Maillotte, H., Haelterman, M., Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174) (FEMTO-ST), Université de Technologie de Belfort-Montbeliard (UTBM)-Ecole Nationale Supérieure de Mécanique et des Microtechniques (ENSMM)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Centre National de la Recherche Scientifique (CNRS), Institute of Atomic Physics, and Université de Roumanie

Published
2004

41. Synchronisation passive de modes d'ordre supérieur par mélange à, quatre ondes dissipatif dans un laser à fibre

Author

Sylvestre, T., Coen, S., Emplit, Ph, Haelterman, M., Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174) (FEMTO-ST), Université de Technologie de Belfort-Montbeliard (UTBM)-Ecole Nationale Supérieure de Mécanique et des Microtechniques (ENSMM)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Centre National de la Recherche Scientifique (CNRS), Université libre de Bruxelles (ULB), Institute of Atomic Physics, and Université de Roumanie

Subjects
[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics]
Published
2002

42. Self-induced modulational instability laser revisited: normal dispersion and dark-pulse train generation

Author

Sylvestre, T., Stéphane Coen, Emplit, P., Haelterman, M., Service d'Optique et Acoustique, Université libre de Bruxelles (ULB), and Lafon, Bélinda

Subjects
[SPI.OPTI] Engineering Sciences [physics]/Optics / Photonic, [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic
Abstract

International audience; We study theoretically and experimentally the so-called self-induced modulational instability laser and show that the passive mode-locking mechanism that is at play in this laser relies on a dissipative four-wave mixing process that leads to generation of a dark-pulse train in the normal-dispersion regime.

Published
2002

43. Symmetry–breaking instability of multimode vector solitons in Kerr media

Author

Cambournac, Cyril, Sylvestre, T., Maillotte, H., Kockaert, P., Vanderlinden, B., Emplit, Ph, Haelterman, M., Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174) (FEMTO-ST), Université de Technologie de Belfort-Montbeliard (UTBM)-Ecole Nationale Supérieure de Mécanique et des Microtechniques (ENSMM)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Centre National de la Recherche Scientifique (CNRS), Institute of Atomic Physics, and Université de Roumanie

Published
2002

44. Observation de la brisure de symétrie de l'état lié de solitons dans un milieu Kerr isotrope

Author

Cambournac, Cyril, Sylvestre, T., Maillotte, H., Kockaert, P., Vanderlinden, B., Emplit, Ph, Haelterman, M., Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174) (FEMTO-ST), Université de Technologie de Belfort-Montbeliard (UTBM)-Ecole Nationale Supérieure de Mécanique et des Microtechniques (ENSMM)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Centre National de la Recherche Scientifique (CNRS), Institute of Atomic Physics, and Université de Roumanie

Published
2002

45. Symmetry–breaking instability of multimode vector solitons

Author

Cambournac, Cyril, Sylvestre, T., Maillotte, H., Vanderlinden, B., Kockaert, P., Emplit, P., Haelterman, M., Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174) (FEMTO-ST), Université de Technologie de Belfort-Montbeliard (UTBM)-Ecole Nationale Supérieure de Mécanique et des Microtechniques (ENSMM)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Centre National de la Recherche Scientifique (CNRS), Institute of Atomic Physics, and Université de Roumanie

Published
2002

46. Observation of the symmetry– breaking instability of the (1+1)-d multimode vector soliton in CS2

Author

Cambournac, Cyril, Sylvestre, T., Maillotte, H., Kockaert, P., Vanderlinden, B., Emplit, Ph, Haelterman, M., Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174) (FEMTO-ST), Université de Technologie de Belfort-Montbeliard (UTBM)-Ecole Nationale Supérieure de Mécanique et des Microtechniques (ENSMM)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Centre National de la Recherche Scientifique (CNRS), Institute of Atomic Physics, and Université de Roumanie

Published
2002

47. Observation de la brisure de symétrie de l'état lié de solitons vectoriels dans un milieu de Kerr isotrope

Author

Cambournac, Cyril, Sylvestre, T., Maillotte, H., Kockaert, P., Vanderlinden, B., Emplit, Ph, Haelterman, M., Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174) (FEMTO-ST), Université de Technologie de Belfort-Montbeliard (UTBM)-Ecole Nationale Supérieure de Mécanique et des Microtechniques (ENSMM)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Centre National de la Recherche Scientifique (CNRS), Institute of Atomic Physics, and Université de Roumanie

Published
2002

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