13 research outputs found

    Statistics of multipath component clustering in an office environment

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    In this paper, directional MIMO measurements in an indoor office environment are presented. A 5-D ESPRIT estimation algorithm is used to extract parameters associated with discrete propagation paths, such as their azimuth of arrival, azimuth of departure, delay, and power. The estimated path parameters are grouped into clusters using the statistical K-power-means algorithm. Statistical distributions are determined for the path parameters within individual clusters and for their change between clusters. To validate the distributional choices, the goodness-of-fit to the proposed distributions is verified using statistical hypothesis tests with sufficient power

    Ready for EURONEAR NEA surveys using the NEARBY moving source detection platform

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    In 2015 we started a PhD thesis aiming to write a moving objects processing system (MOPS) aimed to detect near Earth asteroids (NEAs) in astronomical surveys planned within the EURONEAR project. Based on this MOPS experience, in 2017 we proposed the NEARBY project to the Romanian Space Agency, which awarded funding to the Technical University of Cluj-Napoca (UTCN) and the University of Craiovafor building a cloud-based online platform to reduce survey images, detect, validate and report in near real time asteroid detections and NEA candidates. The NEARBY platform was built and is available at UTCN since Feb 2018, being tested during 5 pilot surveys observed in 2017-2018 with the Isaac Newton Telescope in La Palma. Two NEAs were discovered in Nov 2018 (2018 VQ1 and 2018 VN3), being recovered and reported to MPC within 2 hours. Other 4 discovered NEAs were found from a few dozen possible NEA candidates promptly being followed, allowing us to discover 22 Hungarias and 7 Mars crossing asteroids using the NEARBY platform. Compared with other few available software, NEARBY could detect more asteroids (by 8-41%), but scores less than human detection (by about 10%). Using resulted data, the astrometric accurancy, photometric limits and an INT NEA survey case study are presented as guidelines for planning future surveys

    New national and regional bryophyte records, 42

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    none46New record of Plagiothecium denticulatum var. obtusifolium from the Parco dell’Aveto (Liguria, Province of Genova).Ellis, L. T.; Aleffi, M.; Bakalin, V. A.; Bednarek-Ochyra, H.; Bergamini, A.; Beveridge, P.; Choi, S. S.; Fedosov, V. E.; Gabriel, R.; Gallego, M. T.; Grdović, S.; Gupta, R.; Nath, V.; Asthana, A. K.; Jennings, L.; Kürschner, H.; Lebouvier, M.; Nair, M. C.; Manjula, K. M.; Rajesh, K. P.; Nobis, M.; Nowak, A.; Park, S. J.; Sun, B-Y.; Plášek, V.; Číhal, L.; Poponessi, S.; Mariotti, M.; Sabovljević, A.; Sabovljević, M. S.; Sawicki, J.; Schnyder, N.; Schumacker, R.; Sim-Sim, M.; Singh, D. K.; Singh, D.; Majumdar, S.; Singh Deo, S.; Ştefănuţ, S.; Suleiman, M.; Seng, C. M.; Chua, M. S.; Váňa, J.; Venanzoni, R.; Bricchi, E.; Wigginton, M. J.Ellis, L. T.; Aleffi, M.; Bakalin, V. A.; Bednarek Ochyra, H.; Bergamini, A.; Beveridge, P.; Choi, S. S.; Fedosov, V. E.; Gabriel, R.; Gallego, M. T.; Grdović, S.; Gupta, R.; Nath, V.; Asthana, A. K.; Jennings, L.; Kürschner, H.; Lebouvier, M.; Nair, M. C.; Manjula, K. M.; Rajesh, K. P.; Nobis, M.; Nowak, A.; Park, S. J.; Sun, B. Y.; Plášek, V.; Číhal, L.; Poponessi, S.; Mariotti, Mauro; Sabovljević, A.; Sabovljević, M. S.; Sawicki, J.; Schnyder, N.; Schumacker, R.; Sim Sim, M.; Singh, D. K.; Singh, D.; Majumdar, S.; Singh Deo, S.; Ştefănuţ, S.; Suleiman, M.; Seng, C. M.; Chua, M. S.; Váňa, J.; Venanzoni, R.; Bricchi, E.; Wigginton, M. J
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