Danish Plough-Marks from the Neolithic and Bronze Age

Danish Plough-Marks from the Neolithic and Bronze Ag

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Luminescence dates of the Iron Age cemetery at Møllegårdsmarken, Fyn, Denmark

The Iron Age cemetery at Møllegårdsmarken on the island of Funen is described briefly and the principle of luminescence dating is outlined. Dates for a number of cremation urns and for a potsherd found on a road running close to the site are presented. The dating was carried out with the OSL method SARA applied to quartz

Reviews

Reviews: Goran Burenhult (ed.): The Archaeology of Carrowmore (by Flemming Kaul).Jutta Meurers-Balke: Siggeneben-Siid. Ein Fundplatz der frühen Trichterbecherkultur an der holsteinischen Ostseekiiste (by Poul Otto Nielsen).Bozena Wyszomirska: Figurplastik och gravskick hos Nord- och Nordosteuropas neolitiska fangstkulturer (by Svend Nielsen).Axel Hartmann: Priihistorische Goldfunde aus Europa II. Spektralanalytische Untersuchungen und deren Auswertung (by Henrik Thrane).Sverre Marstrander (ed.): Foredrag ved det 1. nordiske bronsealdersymposium pa Isegran 1977. Henrik Thrane (ed.): Bronzealderbebyggelsen i Norden. Beretningfra det 2. nordiske symposium for bronzealdeiforskning 1980.Berta Stjernquist (ed.): Struktur och foriindring i bronsaldems samhiille. Rapport fran det 3. nordiske symposiet for bronsalderiforskning 1982.Ake Hyenstrand (ed.): Bronsalderiforskning- kring aktuella projekt (by Kristian Kristiansen).Hans Nortmann: Die vorromische Eisenzeit zwischen unterer Weser und Ems (by Jens-Henrik Bech).John Hines: The Scandinavian Character of Anglian England in the pre-Viking Period (by Mogens Ørsnes).Kolloquien zur allgemeinen und vergleichenden Archäologie and Materialien zur allgemeinen und vergleichenden Archäologie Ed. H. Miiller-Karpe (by Poul Otto Nielsen).E. Pleslova-Stikova (ed.): Geojjzika a ArkeologieGeophysics and Archaeology. 4th meeting of geophysicists and archaeologists in Liblice, Czechoslovakia 1-4 November 1982 (by G. Schoenharting

Experimental Evaluation of Empirical NB-IoT Propagation Modelling in a Deep-Indoor Scenario

Path-loss modelling in deep-indoor scenarios is a difficult task. On one hand, the theoretical formulae solely dependent on transmitter-receiver distance are too simple; on the other hand, discovering all significant factors affecting the loss of signal power in a given situation may often be infeasible. In this paper, we experimentally investigate the influence of deep-indoor features such as indoor depth, indoor distance and distance to the closest tunnel corridor and the effect on received power using NB-IoT. We describe a measurement campaign performed in a system of long underground tunnels, and we analyse linear regression models involving the engineered features. We show that the current empirical models for NB-IoT signal attenuation are inaccurate in a deep-indoor scenario. We observe that 1) indoor distance and penetration depth do not explain the signal attenuation well and increase the error of the prediction by 2-12 dB using existing models, and 2) a promising feature of average distance to the nearest corridor is identified.Comment: 6 pages, 6 figures, submitted to Globecom2020 conference, Selected Areas in Communications Symposium, Track on Internet of Things and Smart Connected Communitie