71 research outputs found
Protectiecurven voor de FM-band van centrale antenne-inrichtingen
No full textProtectiecurven voor de FM-band van centrale antenne-inrichtingen zijn grafieken welke het toelaatbare niveau van intermodulatieprodukten geven als functie van het gewenste FM-signaal en het stoorprodukt. Dit afstudeerverslag baseert zich op het opleggen van.de CCIR ruis- en single frequentie-eisen aan het hoorbare signaal, er worden dus voor elk stoorprodukt twee curven gegeven. De intermodulatieprodukten worden ingedeeld naar de modulatie van de bronsignalen, FM-geluid en restzijband-beeld. De resultaten zijn ondergebracht in hoofdstuk 9, dat los van de rest van het verslag gelezen kan worden.Applied SciencesElectrical EngineeringLaboratorium voor Transmissie van Informati
Phase-Coded FMCW PARSAX Radar Dataset
No full textDataset collected with the TU Delft PARSAX S-band coherent radar using the frequency-modulated continuous-wave (FMCW) and Phase-coded FMCW waveforms. This dataset accompanies the PhD dissertation of Utku Kumbul entitled: "Phase-coded FMCW for automotive radars".
More details about the PARSAX radar used in the measurements can be seen in: O. A. Krasnov, L. P. Ligthart, Zhijian Li, P. Lys and F. van der Zwan, "The PARSAX - full polarimetric FMCW radar with dual-orthogonal signals," 2008 European Radar Conference, 2008, pp. 84-87.
Referencing the dataset
Kumbul, Utku; Petrov, Nikita; van der Zwan, Fred (2022): Phase-Coded FMCW PARSAX Radar Dataset. 4TU.ResearchData. Dataset. https://doi.org/10.4121/21688928
@misc{Kumbul2022,
author = "Utku Kumbul and Nikita Petrov and Fred van der Zwan",
title = "{Phase-Coded FMCW PARSAX Radar Dataset}",
year = "2022",
month = "Dec",
url = "",
doi = "10.4121/21688928 " }
Paper references are:
U. Kumbul, N. Petrov, F. van der Zwan, C. S. Vaucher and A. Yarovoy, "Experimental Investigation of Phase Coded FMCW for Sensing and Communications," 2021 15th European Conference on Antennas and Propagation (EuCAP), 2021, pp. 1-5, doi: 10.23919/EuCAP51087.2021.9411464.
U. Kumbul, N. Petrov, C. S. Vaucher and A. Yarovoy, "Receiver Structures for Phase Modulated FMCW Radars," 2022 16th European Conference on Antennas and Propagation (EuCAP), 2022, pp. 1-5, doi: 10.23919/EuCAP53622.2022.9769268.
U. Kumbul, N. Petrov, C. S. Vaucher and A. Yarovoy, "Smoothed Phase-Coded FMCW: Waveform Properties and Transceiver Architecture," in IEEE Transactions on Aerospace and Electronic Systems, 2022, doi: 10.1109/TAES.2022.3206173. </p
COVID-19 en werk – ongelijke effecten van generieke maatregelen
No full textTijdens de coronapandemie werd in de eerste plaats onderscheid gemaakt tussen werkenden met en zonder cruciaal beroep. De overheidsmaatregelen om de verspreiding van het virus tegen te gaan, zorgden echter voor het ontstaan van vier groepen werkenden: mensen in cruciale en niet-cruciale beroepen die op locatie werkten, en thuiswerkenden in cruciale en niet-cruciale beroepen. We zien dat bestaande ongelijkheden in werk en werkbeleving werden vergroot tijdens de pandemie. In toekomstige crisissen moet meer aandacht zijn voor de verschillende uitdagingen in ervaren autonomie in hun werk, werkdruk en werk-privébalans voor elk van deze vier groepen
Bereiding van alkylatiebenzine
No full textDocument(en) uit de collectie Chemische ProcestechnologieDelftChemTechApplied Science
De zuivering van waterstof met behulp van het P.S.A.-systeem
No full textDocument(en) uit de collectie Chemische Procestechnologie.DelftChemTechApplied Science
Cancer prevalence estimates in Europe at the beginning of 2000
No full textBackground: Complete cancer prevalence data in Europe have never been updated after the first estimates provided by the EUROPREVAL project and referred to the year 1993. This paper provides prevalence estimates for 16 majorcancers in Europe at the beginning of the year 2003.Patients and methods: We estimated complete prevalence by the completeness index method. We usedinformation on cancer patients diagnosed in 1978-2002 with vital status information available up to 31December 2003, from 76 European cancer registries.Results: About 11.6 millions of Europeans with a history of one of the major considered cancers were alive on1 January 2003. For breast and prostate cancers, about 1 out of 73 women and 1 out of 160 men were living with aprevious diagnosis of breast and prostate cancers, respectively. The demographic variations alone will increase thenumber of prevalent cases to nearly 13 millions in 2010.Conclusions: Several factors (early detection, population aging and better treatment) contribute to increase cancerprevalence and push for the need of a continuous monitoring of prevalence indicators to properly plan needs, resourceallocation to cancer and for improving health care programs for cancer survivors. Cancer prevalence should beincluded within the EU official health statistics. © The Author 2013. Published by Oxford University Press on behalf of the European Society for Medical Oncology. All rights reserved.Background: Complete cancer prevalence data in Europe have never been updated after the first estimates provided by the EUROPREVAL project and referred to the year 1993. This paper provides prevalence estimates for 16 majorcancers in Europe at the beginning of the year 2003.Patients and methods: We estimated complete prevalence by the completeness index method. We usedinformation on cancer patients diagnosed in 1978-2002 with vital status information available up to 31December 2003, from 76 European cancer registries.Results: About 11.6 millions of Europeans with a history of one of the major considered cancers were alive on1 January 2003. For breast and prostate cancers, about 1 out of 73 women and 1 out of 160 men were living with aprevious diagnosis of breast and prostate cancers, respectively. The demographic variations alone will increase thenumber of prevalent cases to nearly 13 millions in 2010.Conclusions: Several factors (early detection, population aging and better treatment) contribute to increase cancerprevalence and push for the need of a continuous monitoring of prevalence indicators to properly plan needs, resourceallocation to cancer and for improving health care programs for cancer survivors. Cancer prevalence should beincluded within the EU official health statistics
Physical Activity, Mindfulness Meditation, or Heart Rate Variability Biofeedback for Stress Reduction: A Randomized Controlled Trial
No full textPhysical activity, mindfulness meditation, or heart rate variability biofeedback for stress reduction: a randomized controlled trial van der Zwan, J.E.; de Vente, W.; Huizink, A.C.; Bögels, S.M.; de Bruin, E.I. Published in: Applied Psychophysiology and Biofeedback DOI: 10.1007/s10484-015-9293-x Link to publication Citation for published version (APA): van der Zwan, J. E., de Vente, W., Huizink, A. C., Bögels, S. M., & de Bruin, E. I. (2015). Physical activity, mindfulness meditation, or heart rate variability biofeedback for stress reduction: a randomized controlled trial. Applied Psychophysiology and Biofeedback, 40(4), 257-268. https://doi.org/10.1007/s10484-015-9293-x General rights It is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), other than for strictly personal, individual use, unless the work is under an open content license (like Creative Commons). Disclaimer/Complaints regulations If you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library: https://uba.uva.nl/en/contact, or a letter to: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible. Abstract In contemporary western societies stress is highly prevalent, therefore the need for stress-reducing methods is great. This randomized controlled trial compared the efficacy of self-help physical activity (PA), mindfulness meditation (MM), and heart rate variability biofeedback (HRV-BF) in reducing stress and its related symptoms. We randomly allocated 126 participants to PA, MM, or HRV-BF upon enrollment, of whom 76 agreed to participate. The interventions consisted of psycho-education and an introduction to the specific intervention techniques and 5 weeks of daily exercises at home. The PA exercises consisted of a vigorous-intensity activity of free choice. The MM exercises consisted of guided mindfulness meditation. The HRV-BF exercises consisted of slow breathing with a heart rate variability biofeedback device. Participants received daily reminders for their exercises and were contacted weekly to monitor their progress. They completed questionnaires prior to, directly after, and 6 weeks after the intervention. Results indicated an overall beneficial effect consisting of reduced stress, anxiety and depressive symptoms, and improved psychological wellbeing and sleep quality. No significant between-intervention effect was found, suggesting that PA, MM, and HRV-BF are equally effective in reducing stress and its related symptoms. These self-help interventions provide easily accessible help for people with stress complaints
Designing for TARA: The radar control unit
No full textThis thesis describes the work done on a control system for the Transportable Atmospheric RAdar (TARA), which is located at the Cabauw Experimental Site for Atmosperic Research (CESAR). It describes the way in which this radar control unit was implemented within the TARA, by making use of a high-level programming language. The control unit consists of a PXI-system of National Instruments, LabVIEW software, a DDS from Analog Devices and provided Matlab code. The project resulted in a working prototype. The TARA itself is a FM-CW radar with the possibility of sending and receiving in multiple polarizations and orientations for weather measurements. The system was tested and most functions worked properly. During the test, the measurements with the new system generated the same data as the current system. This proved that the system is working correctly, which is of great importance for the ATMOS group, because they are planning to transport the TARA to a measurement campaign in France in 2012 using the upgraded system.Remote Sensing of the EnvironmentElectrical Engineering, Mathematics and Computer Scienc
Fabrieksschema phenol (via cumeen)
No full textDocument(en) uit de collectie Chemische ProcestechnologieDelftChemTechApplied Science
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