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539 results on '"Molnár, Peter"'

6. Integrating high-resolution remote sensing and empirical wildlife detection data for climate-resilient corridors across tropical elevational gradients

Author

McCullough, Ian M., Beirne, Christopher, Soto-Navarro, Carolina, Eppert, Amy, Flatt, Eleanor, Kemp, Yvonne J.M., Molnár, Péter K., Mooring, Michael S., Nikolova, Yana, Olson, Erik R., Pinto, Carolina, Porras, Junior, Quirós, María José Mata, Rodriguez, Guido Saborío, Schipper, Jan, Tellez, Chelsey R., Vargas Soto, Juan S., and Whitworth, Andrew

Published
2024
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16. Long-term exposure to traffic noise and risk of incident colon cancer: A pooled study of eleven Nordic cohorts

Author

Roswall, Nina, Thacher, Jesse D., Ögren, Mikael, Pyko, Andrei, Åkesson, Agneta, Oudin, Anna, Tjønneland, Anne, Rosengren, Annika, Poulsen, Aslak H., Eriksson, Charlotta, Segersson, David, Rizzuto, Debora, Helte, Emilie, Andersson, Eva M., Aasvang, Gunn Marit, Gudjonsdottir, Hrafnhildur, Khan, Jibran, Selander, Jenny, Christensen, Jesper H., Brandt, Jørgen, Leander, Karin, Mattisson, Kristoffer, Eneroth, Kristina, Stucki, Lara, Barregard, Lars, Stockfelt, Leo, Albin, Maria, Simonsen, Mette K., Spanne, Mårten, Jousilahti, Pekka, Tiittanen, Pekka, Molnàr, Peter, Ljungman, Petter L.S., Yli-Tuomi, Tarja, Cole-Hunter, Thomas, Lanki, Timo, Hvidtfeldt, Ulla A., Lim, Youn-Hee, Andersen, Zorana J., Pershagen, Göran, and Sørensen, Mette

Published
2023
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19. Long-term ambient air pollution and coronary atherosclerosis: Results from the Swedish SCAPIS study

Author

Edlund, Karl Kilbo, primary, Andersson, Eva M., additional, Asker, Christian, additional, Barregard, Lars, additional, Bergström, Göran, additional, Eneroth, Kristina, additional, Jernberg, Tomas, additional, Ljunggren, Stefan, additional, Molnár, Peter, additional, Sommar, Johan Nilsson, additional, Oudin, Anna, additional, Pershagen, Göran, additional, Persson, Åsa, additional, Pyko, Andrei, additional, Spanne, Mårten, additional, Tondel, Martin, additional, Ögren, Mikael, additional, Ljungman, Petter, additional, and Stockfelt, Leo, additional

Published
2024
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29. Evaluation of a self-monitoring protocol for assessing soot and polycyclic aromatic hydrocarbon exposure among chimney sweeps.

Author

Klang, Therese, Molnár, Peter, Lindh, Christian, Storsjö, Tobias, and Tinnerberg, Håkan

Subjects
*POLYCYCLIC aromatic hydrocarbons, *OCCUPATIONAL exposure, *CARBON-black, *WORKWEEK, *CHIMNEYS
Abstract

Traditional methods for measuring chemical exposure have challenges in terms of obtaining sufficient data; therefore, improved methods for better assessing occupational exposure are needed. One possible approach to mitigate these challenges is to use self-monitoring methods such as sensors, diaries, or biomarkers. In the present study, a self-monitored method for measuring soot exposure, which included real-time air monitoring, a work diary, and the collection of urine samples, was evaluated. To validate the method, exposure measurements during the workday and diary entries were compared with velocities calculated from GPS tracking and the expected polycyclic aromatic hydrocarbon (PAH) metabolite patterns in urine. The method was applied with chimney sweeps, an occupational group at a high risk of many severe health outcomes and for whom effective control measures for reducing exposure are needed. In the study, 20 chimney sweeps followed a self-monitoring protocol for 8 consecutive workdays. Personal exposure to soot was measured as black carbon (BC) using micro-aethalometers. A diary was used to record the work tasks performed, and urine samples were collected and analysed for PAH metabolites. From the expected 160 full day measurements, 146 (91%) BC measurements and 149 (93%) diaries were collected. From the expected 320 urine samples, 304 (95%) were collected. The tasks noted in the diaries overlapped with information obtained from the GPS tracking of the chimney sweeps, which covered 96% of the measurement time. The PAH metabolites in urine increased during the work week. Factors believed to have positively influenced the sample collection and task documentation were the highly motivated participants and the continuous presence of trained occupational hygiene professionals during the planning of the study and throughout the measurement stage, during which they were available to inform, instruct, and address questions. In conclusion, the self-monitored protocol used in this study with chimney sweeps is a valuable and valid method that can be used to collect larger numbers of samples. This is especially valuable for occupations in which the employees are working independently and the exposure is difficult to monitor with traditional occupational hygiene methods. [ABSTRACT FROM AUTHOR]

Published
2024
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40. A figure of merit for describing the performance of scaling of parallelization

Author

Végh, János, Molnár, Péter, and Vásárhelyi, József

Subjects
Computer Science - Performance, Computer Science - Distributed, Parallel, and Cluster Computing
Abstract

With the spread of multi- and many-core processors more and more typical task is to re-implement some source code written originally for a single processor to run on more than one cores. Since it is a serious investment, it is important to decide how much efforts pays off, and whether the resulting implementation has as good performability as it could be. The Amdahl's law provides some theoretical upper limits for the performance gain reachable through parallelizing the code, but it needs the detailed architectural knowledge of the program code, does not consider the housekeeping activity needed for parallelization and cannot tell how the actual stage of parallelization implementation performs. The present paper suggests a quantitative measure for that goal. This figure of merit is derived experimentally, from measured running time, and number of threads/cores. It can be used to quantify the used parallelization technology, the connection between the computing units, the acceleration technology under the given conditions, communication method within SoC, or the performance of the software team/compiler., Comment: 14 pages, 6 figures. Contains qualifying merits for scaling in case of compiling methods, HW architectures and algorithms

Published
2016

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