227 research outputs found
Manufacturing Operations in Europe: Where Do We Go Next?
No full textExtrapolating from the results of a 10-year INSEAD Survey, Arnoud De Meyer offers some views on the future for manufacturing in Europe. The model on which the Survey was based indicates that competitive priorities and action plans in manufacturing changed over the 10-year period. Taking lessons from these, the author makes some `informed guesses' on the future implications for European manufacturers in the form of seven normative features: innovation in the value package; close integration between manufacturing and service; the importance of internationalism; flexible project-based organisation; more integrated management of the value added chain; successful transformation of operational programmes into strategic programmes; and building a knowledge-based organisation
Manufacturing operations in Europe:: Where do we go next?
No full textExtrapolating from the results of a 10-year INSEAD Survey, Arnoud De Meyer offers some views on the future for manufacturing in Europe. The model on which the Survey was based indicates that competitive priorities and action plans in manufacturing changed over the 10-year period. Taking lessons from these, the author makes some 'informed guesses' on the future implications for European manufacturers in the form of seven normative features: innovation in the value package; close integration between manufacturing and service; the importance of internationalism; flexible project-based organisation; more integrated management of the value added chain; successful transformation of operational programmes into strategic programmes; and building a knowledge-based organisation.
Deep-Pathfinder implementation for mixing layer height detection from CHM15k ceilometer data
No full text<p>This publication provides an implementation of the Deep-Pathfinder algorithm, extracting mixing layer height information from Lufft CHM15k ceilometer data using computer vision techniques. The corresponding GitHub repository can be found at: <a href="https://github.com/jswijnands/Deep-Pathfinder">https://github.com/jswijnands/Deep-Pathfinder</a></p>
<p>Note that this script is designed for real-time application, so please replace the NetCDF file with your latest observation data at 12 s temporal and 10 m vertical resolution (at least 45 minutes). For real-time inference, the value of the nighttime indicator is set based on the current time when the script is run. If you are interested in analysing historical data, this should be changed.</p>
<p>For full details of the methodology and citation, please refer to: Wijnands, J.S., Apituley, A., Alves Gouveia, D., Noteboom, J.W. (2024). Deep-Pathfinder: a boundary layer height detection algorithm based on image segmentation. Atmospheric Measurement Techniques, doi: <a href="https://doi.org/10.5194/amt-2023-80" rel="nofollow">https://doi.org/10.5194/amt-2023-80</a></p>
Intercomparison of NO₂, O₄, O₃ and HCHO slant column measurements by MAX-DOAS and zenith-sky UV–visible spectrometers during CINDI-2
No full textAuthors: - Karin Kreher, Michel Van Roozendael, Francois Hendrick, Arnoud Apituley, Ermioni Dimitropoulou, Udo Frieß, Andreas Richter, Thomas Wagner, Johannes Lampel, Nader Abuhassan, Li Ang, Monica Anguas, Alkis Bais, Nuria Benavent, Tim Bösch, Kristof Bognar, Alexander Borovski, Ilya Bruchkouski, Alexander Cede, Ka Lok Chan, Sebastian Donner, Theano Drosoglou, Caroline Fayt, Henning Finkenzeller, David Garcia-Nieto, Clio Gielen, Laura Gómez-Martín, Nan Hao, Bas Henzing, Jay R. Herman, Christian Hermans, Syedul Hoque, Hitoshi Irie, Junli Jin, Paul Johnston, Junaid Khayyam Butt, Fahim Khokhar, Theodore K. Koenig, Jonas Kuhn, Vinod Kumar, Cheng Liu, Jianzhong Ma, Alexis Merlaud, Abhishek K. Mishra, Moritz Müller, Monica Navarro-Comas, Mareike Ostendorf, Andrea Pazmino, Enno Peters,a , Gaia Pinardi, Manuel Pinharanda, Ankie Piters, Ulrich Platt, Oleg Postylyakov, Cristina Prados-Roman, Olga Puentedura, Richard Querel, Alfonso Saiz-Lopez, Anja Schönhardt, Stefan F. Schreier, André Seyler, Vinayak Sinha, Elena Spinei, Kimberly Strong, Frederik Tack, Xin Tian, Martin Tiefengraber, Jan-Lukas Tirpitz, Jeroen van Gent, Rainer Volkamer, Mihalis Vrekoussis, Shanshan Wang, Zhuoru Wang, Mark Wenig, Folkard Wittrock, Pinhua H. Xie, Jin Xu, Margarita Yela, Chengxin Zhang, and Xiaoyi ZhaoIn September 2016, 36 spectrometers from 24 institutes measured a number of key atmospheric pollutants for a period of 17 d during the Second Cabauw Intercomparison campaign for Nitrogen Dioxide measuring Instruments (CINDI-2) that took place at Cabauw, the Netherlands (51.97◦ N, 4.93◦ E). We report on the outcome of the formal semi-blind intercomparison exercise, which was held under the umbrella of the Network for the Detection of Atmospheric Composition Change (NDACC) and the European Space Agency (ESA). The three major goals of CINDI-2 were (1) to characterise and better understand the differences between a large number of multi-axis differential optical absorption spectroscopy (MAX-DOAS) and zenith-sky DOAS instruments and analysis methods, (2) to define a robust methodology for performance assessment of all participating instruments, and (3) to contribute to a harmonisation of the measurement settings and retrieval methods. This, in turn, creates the capability to produce consistent high-quality ground-based data sets, which are an essential requirement to generate reliable long-term measurement time series suitable for trend analysis and satellite data validation. The data products investigated during the semi-blind intercomparison are slant columns of nitrogen dioxide (NO₂), the oxygen collision complex (O₄) and ozone (O₃) measured in the UV and visible wavelength region, formaldehyde (HCHO) in the UV spectral region, and NO₂ in an additional (smaller) wavelength range in the visible region. The campaign design and implementation processes are discussed in detail including the measurement protocol, calibration procedures and slant column retrieval settings. Strong emphasis was put on the careful alignment and synchronisation of the measurement systems, resulting in a unique set of measurements made under highly comparable air mass conditions. The CINDI-2 data sets were investigated using a regression analysis of the slant columns measured by each instrument and for each of the target data products. The slope and intercept of the regression analysis respectively quantify the mean systematic bias and offset of the individual data sets against the selected reference (which is obtained from the median of either all data sets or a subset), and the rms error provides an estimate of the measurement noise or dispersion. These three criteria are examined and for each of the parameters and each of the data products, performance thresholds are set and applied to all the measurements. The approach presented here has been developed based on heritage from previous intercomparison exercises. It introduces a quantitative assessment of the consistency between all the participating instruments for the MAX-DOAS and zenith-sky DOAS techniques.CINDI-2 received funding from the Netherlands Space Office (NSO). Funding for this study was provided
by ESA through the CINDI-2 (ESA contract no. 4000118533/16/ISbo) and FRM4DOAS (ESA contract no. 4000118181/16/I-EF)
projects and partly within the EU 7th Framework Programme
QA4ECV project (grant agreement no. 607405). The BOKU
MAX-DOAS instrument was funded and the participation of Stefan F. Schreier was supported by the Austrian Science Fund
(FWF): I 2296-N29. The participation of the University of Toronto
team was supported by the Canadian Space Agency (through
the AVATARS project) and the Natural Sciences and Engineering Research Council (through the PAHA project). The instrument was primarily funded by the Canada Foundation for Innovation and is usually operated at the Polar Environment Atmospheric Research Laboratory (PEARL) by the Canadian Network
for the Detection of Atmospheric Change (CANDAC). Funding for
CISC was provided by the UVAS (“Ultraviolet and Visible Atmospheric Sounder”) projects SEOSAT/INGENIO, ESP2015-71299-
R, MINECO-FEDER and UE. The activities of the IUP-Heidelberg
were supported by the DFG project RAPSODI (grant no. PL
193/17-1). SAOZ and Mini-SAOZ instruments are supported by the
Centre National de la Recherche Scientifique (CNRS) and the Centre National d’Etudes Spatiales (CNES). INTA recognises support
from the National funding projects HELADO (CTM2013-41311-
P) and AVATAR (CGL2014-55230-R). AMOIAP recognises support from the Russian Science Foundation (grant no. 16-17-10275)
and the Russian Foundation for Basic Research (grant nos. 16-05-
01062 and 18-35-00682). Ka L. Chan received transnational access funding from ACTRIS-2 (H2020 grant agreement no. 654109).
Rainer Volkamer recognises funding from NASA’s Atmospheric
Composition Program (NASA-16-NUP2016-0001) and the US National Science Foundation (award AGS-1620530). Henning Finkenzeller is the recipient of a NASA graduate fellowship. Mihalis Vrekoussis recognises support from the University of Bremen and the
DFG Research Center/Cluster of Excellence “The Ocean in the
Earth System-MARUM”. Financial support through the University of Bremen Institutional Strategy in the framework of the
DFG Excellence Initiative is gratefully appreciated for Anja Schönhardt. Pandora instrument deployment was supported by Luftblick
through the ESA Pandonia Project and NASA Pandora Project at
the Goddard Space Flight Center under NASA Headquarters’ Tropospheric Composition Program. The article processing charges for
this open-access publication were covered by BK Scientifichttps://amt.copernicus.org/articles/13/2169/2020
EUNADICS-AV early warning system dedicated to supporting aviation in the case of a crisis from natural airborne hazards and radionuclide clouds
No full textThe purpose of the EUNADICS-AV (European Natural Airborne Disaster Information and Coordination System for Aviation) prototype early warning system (EWS) is to develop the combined use of harmonised data products from satellite, ground-based and in situ instruments to produce alerts of airborne hazards (volcanic, dust, smoke and radionuclide clouds), satisfying the requirement of aviation air traffic management (ATM) stakeholders (https://cordis.europa.eu/project/id/723986, last access: 5 November 2021). The alert products developed by the EUNADICS-AV EWS, i.e. near-real-time (NRT) observations, email notifications and netCDF (Network Common Data Form) alert data products (called NCAP files), have shown significant interest in using selective detection of natural airborne hazards from polar-orbiting satellites. The combination of several sensors inside a single global system demonstrates the advantage of using a triggered approach to obtain selective detection from observations, which cannot initially discriminate the different aerosol types. Satellite products from hyperspectral ultraviolet–visible (UV–vis) and infrared (IR) sensors (e.g. TROPOMI – TROPOspheric Monitoring Instrument – and IASI – Infrared Atmospheric Sounding Interferometer) and a broadband geostationary imager (Spinning Enhanced Visible and InfraRed Imager; SEVIRI) and retrievals from ground-based networks (e.g. EARLINET – European Aerosol Research Lidar Network, E-PROFILE and the regional network from volcano observatories) are combined by our system to create tailored alert products (e.g. selective ash detection, SO2 column and plume height, dust cloud, and smoke from wildfires). A total of 23 different alert products are implemented, using 1 geostationary and 13 polar-orbiting satellite platforms, 3 external existing service, and 2 EU and 2 regional ground-based networks. This allows for the identification and the tracking of extreme events. The EUNADICS-AV EWS has also shown the need to implement a future relay of radiological data (gamma dose rate and radionuclides concentrations in ground-level air) in the case of a nuclear accident. This highlights the interest of operating early warnings with the use of a homogenised dataset. For the four types of airborne hazard, the EUNADICS-AV EWS has demonstrated its capability to provide NRT alert data products to trigger data assimilation and dispersion modelling providing forecasts and inverse modelling for source term estimate. Not all of our alert data products (NCAP files) are publicly disseminated. Access to our alert products is currently restricted to key users (i.e. Volcanic Ash Advisory Centres, national meteorological services, the World Meteorological Organization, governments, volcano observatories and research collaborators), as these are considered pre-decisional products. On the other hand, thanks to the EUNADICS-AV–SACS (Support to Aviation Control Service) web interface (https://sacs.aeronomie.be, last access: 5 November 2021), the main part of the satellite observations used by the EUNADICS-AV EWS is shown in NRT, with public email notification of volcanic emission and delivery of tailored images and NCAP files. All of the ATM stakeholders (e.g. pilots, airlines and passengers) can access these alert products through this free channel.Peer ReviewedArticle escrit per 46 autors/es: Hugues Brenot Nicolas Theys Lieven Clarisse Jeroen van Gent Daniel Hurtmans Sophie Vandenbussche Nikolaos Papagiannopoulos Lucia Mona Timo Virtanen Andreas Uppstu Mikhail Sofiev Luca Bugliaro Margarita Vázquez-Navarro Pascal Hedelt Michelle Maree Parks Sara Barsotti Mauro Coltelli William Moreland Simona Scollo Giuseppe Salerno Delia Arnold-Arias Marcus Hirtl Tuomas Peltonen Juhani Lahtinen Klaus Sievers Florian Lipok Rolf Rüfenacht Alexander Haefele Maxime Hervo Saskia Wagenaar Wim Som de Cerff Jos de Laat Arnoud Apituley Piet Stammes Quentin Laffineur Andy Delcloo Robertson Lennart Carl-Herbert Rokitansky Arturo Vargas Markus Kerschbaum Christian Resch Raimund Zopp Matthieu Plu 1 Vincent-Henri Peuch Michel van Roozendael Gerhard WotawaPostprint (author's final draft
The later prehistory of the Lillooet area, British Columbia: A thesis submitted to the Faculty of Graduate Studies in partial fulfillment of the requirements for the Degree of Doctor of Philosophy
No full textExcavations were undertaken near the town of Lillooet in 1970 and 1971 to collect information about the prehistoric cultures of the area. Attention was focused upon the last 2,500 to 3,000 years of regional prehistory, a period poorly understood at that time. Six sites were selected for intensive excavation. These sites are described along with the artifacts, features, and burials which were uncovered. Age estimates are offered for most components based primarily on radiocarbon and obsidian hydration dating.Peer reviewedthesisexcavationprehistoryLillooe
EgRk-2 human remains recovery (1973): Non-Permitted investigations October 2017
No full textThis report describes the recovery and analysis of a partial human skeleton exposed in June of 1973 during road maintenance work at an unrecorded archaeological site (later recorded as EgRk-2) near Kelly Lake, southwest of Clinton, B.C. The discovery and results of analysis have not been previously reported. The undated remains are from a single individual, an adult female in her late 20’s or older. She experienced a major crushing injury to her left thigh, possibly in later childhood or early adolescence, resulting in significant damage to the left femur. After the injury, she suffered from an associated chronic osteomyelitis of the left femur. Her overall dietary health, along with the fact her remains were buried at the time of death, suggests she retained her social status in spite of her injury and mobility issues, and that she was the recipient of at least periodic if not regular care and assistance.Not peer reviewedArchaeological repor
The later prehistory of the Lillooet area, British Columbia: A thesis submitted to the Faculty of Graduate Studies in partial fulfillment of the requirements for the Degree of Doctor of Philosophy
No full textExcavations were undertaken near the town of Lillooet in 1970 and 1971 to collect information about the prehistoric cultures of the area. Attention was focused upon the last 2,500 to 3,000 years of regional prehistory, a period poorly understood at that time. Six sites were selected for intensive excavation. These sites are described along with the artifacts, features, and burials which were uncovered. Age estimates are offered for most components based primarily on radiocarbon and obsidian hydration dating.Peer reviewedthesisexcavationprehistoryLillooe
EgRk-2 human remains recovery (1973): Non-Permitted investigations October 2017
No full textThis report describes the recovery and analysis of a partial human skeleton exposed in June of 1973 during road maintenance work at an unrecorded archaeological site (later recorded as EgRk-2) near Kelly Lake, southwest of Clinton, B.C. The discovery and results of analysis have not been previously reported. The undated remains are from a single individual, an adult female in her late 20’s or older. She experienced a major crushing injury to her left thigh, possibly in later childhood or early adolescence, resulting in significant damage to the left femur. After the injury, she suffered from an associated chronic osteomyelitis of the left femur. Her overall dietary health, along with the fact her remains were buried at the time of death, suggests she retained her social status in spite of her injury and mobility issues, and that she was the recipient of at least periodic if not regular care and assistance.Not peer reviewedArchaeological repor
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