76 research outputs found

    Social Behaviour and Settlement Structure: Preliminary Results of a Distribution Analysis on Sites of the Maglemose Culture

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    Social Behaviour and Settlement Structure. Preliminary Results of a Distribution Analysis on Sites of the Maglemose Culture

    Mammoth-hunter Camps in the Scandinavian North Sea Sector during the Late Weichselian?

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    Until recently, the general view of archaeologists was that southern Scandinavia was uninhabited during the last ice age, the Weichselian glaciation. It was thought that humans arriving from south would have met a wall of ice if they tried to penetrate into the area. Recent climate reconstructions and glaciological data, combined with recent faunal finds from the adjacent North Sea sector, promote the idea of a much more moderate and prosperous landscape with large, now submerged, plains accessible. Then this paper argues that large parts of the South Scandinavian North Sea sector were actually inhabitable during most of this glacial period, with extensive ice-free coastal zones even during the Last Glacial Maximum. It is difficult to believe that humans, already well-documented in the adjacent land areas, should not have known to inhabit and exploit such a rich resource zone. In addition to the paleoenvironmental data, ethnoarchaeological evidence is used to document that it was no problem for humans to kill large animals such as mammoths as some researchers have maintained. Furthermore, findings from excavations of mammoth-hunter sites, are used to argue that the large quantities of megafaunal remains fished up from the North Sea in recent years should be seriously considered as representing settlement material associated with mammoth-hunter camps dating from the second half of the Weichsel Glacial Stage. The central question is whether these North Sea faunal remains represent sites similar to the mammoth-hunter camps known from other parts of Europe and from Siberia? If that is the case, the Cultural Heritage management is confronted with a hitherto unrecognised problem

    Chirping for large-scale maritime archaeological survey:a strategy developed from a practical experience-based approach

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    Archaeological wrecks exposed on the sea floor are mapped using side-scan and multibeam techniques, whereas the detection of submerged archaeological sites, such as Stone Age settlements, and wrecks, partially or wholly embedded in sea-floor sediments, requires the application of high-resolution subbottom profilers. This paper presents a strategy for cost-effective, large-scale mapping of previously undetected sediment-embedded sites and wrecks based on subbottom profiling with chirp systems. The mapping strategy described includes (a) definition of line spacing depending on the target; (b) interactive surveying, for example, immediate detailed investigation of potential archaeological anomalies on detection with a denser pattern of subbottom survey lines; (c) onboard interpretation during data acquisition; (d) recognition of nongeological anomalies. Consequently, this strategy differs from those employed in several detailed studies of known wreck sites and from the way in which geologists map the sea floor and the geological column beneath it. The strategy has been developed on the basis of extensive practical experience gained during the use of an off-the-shelf 2D chirp system and, given the present state of this technology, it appears well suited to large-scale maritime archaeological mapping

    Aggemose: An Inland Site from the Early Kongemose Culture on Langeland

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    Aggemose: An Inland Site from the Early Kongemose Culture on Langelan

    Aggemose - part II.: Refitting and wall effect

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    Aggemose - part II. Refitting and wall effec

    Vision-based weed identification with farm robots

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    Robots in agriculture offer new opportunities for real time weed identification and quick removal operations. Weed identification and control remains one of the most challenging task in agriculture, particularly in organic agriculture practices. Considering environmental impacts and food quality, the excess use of chemicals in agriculture for controlling weeds and diseases is decreasing. The cost of herbercides and their field applications must be optimized. As an alternative, a smart weed identification technique followed by the mechanical and thermal weed control can fulfill the organic farmers’ expectations. The smart identification technique works on the concept of ‘shape matching’ and ‘active shape modeling’ of plant and weed leafs. The automated weed detection and control system consists of three major tools. Such as: i) eXcite multispectral camera, ii) LTI image processing library and iii) Hortibot robotic vehicle. The components are combined in Linux interface environment in the eXcite camera associate PC. The laboratory experiments for active shape matching have shown interesting results which will be further enhanced to develop the automated weed detection system. The Hortibot robot will be mounted with the camera unit in the front-end and the mechanical weed remover in the rear-end. The system will be upgraded for intense commercial applications in maize and other row crops

    Skyggerne på væggen: Et forsøg på delvis rekonstruktion af efterretningstjenesten i og fra Sønderjylland fra 1920 til ca. 1950

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    Artiklen søger at rekonstruere historien om dansk efterretningsvirksomhed i mellemkrigstiden igennem Besættelsestiden og ved starten af Den Kolde Krig.  Dette vanskeliggøres af ødelæggelsen af alle Hærens planlægningsarkivalier rettet mod Tyskland den 9. april 1940. Derfor er forfatterne henvist til dels at forudsætte, at den efterretningsvirksomhed fortsatte, som blev skabt før 1. Verdenskrig, dels udnytte Ole Grøns igangværende rekonstruktion af hans farfars og fars rolle i efterretningstjeneste i og fra Sønderjylland i perioden. Artiklen sandsynliggør den socialdemokratiske ledelses afgørende, men diskrete, rolle i hele perioden

    How to map submerged Stone Age sites using acoustics (some experimental results)

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    A central problem for maritime archaeology has been to find survey methods that facilitate efficient and precise mapping of Stone Age sites on the seabed down to the lowest sea level (approximately 140 m) during glacial periods, as well as sites embedded in sea-floor sediments. As predictive landscape modelling has proved to be inadequate for this task, a different approach based on direct detection is required. The observation of an acoustic phenomenon associated with man-made flint debitage but not naturally cracked pieces of flint has opened a window for development of an alternative and efficient direct mapping method. This paper discusses the development of the idea, as well as experimental documentation of the principle on which it is based. It includes a preliminary analysis of how far away on each side of the transducer flint debitage emits an acoustic response, and consequently the required distance between sailing lines for a comprehensive survey to be undertaken at a specific depth
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