100 research outputs found

    MĂ ster universitari en estadĂ­stica i investigaciĂł operativa

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    LIPIcs, Volume 277, GIScience 2023, Complete Volume

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    LIPIcs, Volume 277, GIScience 2023, Complete Volum

    12th International Conference on Geographic Information Science: GIScience 2023, September 12–15, 2023, Leeds, UK

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    SIS 2017. Statistics and Data Science: new challenges, new generations

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    The 2017 SIS Conference aims to highlight the crucial role of the Statistics in Data Science. In this new domain of ‘meaning’ extracted from the data, the increasing amount of produced and available data in databases, nowadays, has brought new challenges. That involves different fields of statistics, machine learning, information and computer science, optimization, pattern recognition. These afford together a considerable contribute in the analysis of ‘Big data’, open data, relational and complex data, structured and no-structured. The interest is to collect the contributes which provide from the different domains of Statistics, in the high dimensional data quality validation, sampling extraction, dimensional reduction, pattern selection, data modelling, testing hypotheses and confirming conclusions drawn from the data

    Proceedings of the 19th Sound and Music Computing Conference

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    Proceedings of the 19th Sound and Music Computing Conference - June 5-12, 2022 - Saint-Étienne (France). https://smc22.grame.f

    Hominin Behaviour and Palaeoenvironments of Pleistocene West Africa

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    Die palĂ€oanthropologischen und archĂ€ologischen Aufzeichnungen Afrikas stellen die Ă€lteste und reichhaltigste Sammlung von Fossilien, Artefakten und Umweltmaterialien ĂŒber den Ursprung und die Entwicklung unserer Spezies dar. WĂ€hrend Gebiete wie das östliche, sĂŒdliche und nördliche Afrika seit Jahrhunderten intensiv erforscht und erforscht werden, ist dies bei anderen, weniger stark vertretenen Regionen wie Westafrika nicht der Fall. Bis heute bieten die derzeit bekannten archĂ€ologischen Aufzeichnungen in Westafrika nur einen begrenzten Einblick in die frĂŒhere menschliche PrĂ€senz und AktivitĂ€t in der Region. Westafrika macht mehr als 20% der GesamtflĂ€che des afrikanischen Kontinents aus und verdient grĂ¶ĂŸere Beachtung, wenn man die Verhaltensdynamik und die Umweltmuster der afrikanischen Homininen vollstĂ€ndig verstehen will. Zu diesem Zweck sollen diese Dissertation und die darin enthaltenen Studien ein umfassenderes VerstĂ€ndnis des wahren Ausmaßes des Verhaltens der Homininen in der Vergangenheit und der PalĂ€oumwelt im pleistozĂ€nen Westafrika vermitteln. Angesichts der weit gefassten Zielsetzung dieser Dissertation wurden die folgenden explizit definierten Studien durchgefĂŒhrt: (1) Durchsicht der gesamten veröffentlichten Literatur ĂŒber pleistozĂ€ne westafrikanische archĂ€ologische Ablagerungen und StĂ€tten, (2) archĂ€ologische Untersuchung spezifischer Kontexte in tropischen und subtropischen Umgebungen und (3) die palĂ€oökologische Rekonstruktion der alten Landschaften des pleistozĂ€nen Westafrika. Die angewandte Methodik kombinierte archĂ€ologische, palĂ€oökologische und digitale Methoden und wurde auf eine Vielzahl von Kontexten angewandt, darunter veröffentlichte Literatur, archĂ€ologische Untersuchungen und Ausgrabungen, lithische Assemblagen, Wirbeltierfaunen, palĂ€obotanische Überreste sowie georĂ€umliche und palĂ€oklimatische DatensĂ€tze. Die Ergebnisse dieser Dissertation zeigen, dass die Geschichte der Menschen und der Umwelt komplexer ist als bisher angenommen. Die erneute Untersuchung der veröffentlichten Literatur zeigt eine sporadische anfĂ€ngliche PrĂ€senz von Homininen in der gesamten Region mit wiederkehrenden Besiedlungen vor 300.000 Jahren wĂ€hrend der frĂŒhen Steinzeit. Mit der Etablierung mittelsteinzeitlicher Traditionen in Westafrika wĂ€hrend des mittleren und spĂ€ten PleistozĂ€ns wurden die menschlichen Populationen miteinander verbunden und bewiesen umfangreiche FĂ€higkeiten zum Überleben in tropischen Umgebungen. Die Anwendung detaillierter und moderner Vermessungs-, Ausgrabungs- und Labortechniken im Rahmen dieser Dissertation verdeutlicht auch das Ă€ußerst komplexe Kultur- und Umweltverhalten der Homininen in dieser Region. Diese Dissertation dient als Rahmen, um das Ausmaß der menschlichen Kulturen des PleistozĂ€ns in Westafrika zu verstehen.The African palaeoanthropological and archaeological record represents the earliest and richest collection of fossils, artefacts and environmental materials concerning the origin and development of our species. Whilst areas such as Eastern, Southern, and Northern Africa have been intensively explored and researched for centuries, other lesser-represented regions, such as West Africa, have not. To date, the currently known archaeological record in West Africa offers only a restricted view of past human presence and activity in the region. West Africa represents over 20% of the total area of the African continent and deserves greater consideration if behavioural dynamics and environmental patterns of African hominins are to be fully understood. To this end, this dissertation and its constituent studies set to provide a more complete understanding of the true extent of past hominin behaviour and palaeoenvironments within Pleistocene West Africa. Given the broad objective of this dissertation, the following explicitly defined studies were carried out: (1) review of the full extent of published literature on Pleistocene West African archaeological deposits and sites, (2) archaeological investigation of specific contexts within tropical and sub-tropical environments, and (3) the paleoenvironmental reconstruction of the ancient landscapes of Pleistocene West Africa. The employed methodology merged archaeological, palaeoenvironmental and digital methods, and was applied to a variety of contexts including published literature, archaeological surveys and excavations, lithic assemblages, vertebrate faunal assemblages, paleobotanical remains, and geospatial and paleoclimatic datasets. The results of this dissertation present evidence of a more complex human and environmental history than was previously thought. The re-investigation of published literature demonstrates a sporadic initial presence of hominins throughout the region with recurring occupations before 300,000 years ago during the Early Stone Age. With the establishment of Middle Stone Age traditions in West Africa during the Middle and Late Pleistocene, human populations became interconnected and demonstrated extensive capabilities to survive in tropical environments. The application of detailed and modern survey, excavation and laboratory-based techniques included in this dissertation also highlights the extremely complex cultural and environmental behaviour of hominins in the region. This dissertation serves as an initial framework to understand the true extent of Pleistocene human cultures and their relationship with the landscape in West Africa

    Software Takes Command

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    This book is available as open access through the Bloomsbury Open Access programme and is available on www.bloomsburycollections.com. Software has replaced a diverse array of physical, mechanical, and electronic technologies used before 21st century to create, store, distribute and interact with cultural artifacts. It has become our interface to the world, to others, to our memory and our imagination - a universal language through which the world speaks, and a universal engine on which the world runs. What electricity and combustion engine were to the early 20th century, software is to the early 21st century. Offering the the first theoretical and historical account of software for media authoring and its effects on the practice and the very concept of 'media,' the author of The Language of New Media (2001) develops his own theory for this rapidly-growing, always-changing field. What was the thinking and motivations of people who in the 1960 and 1970s created concepts and practical techniques that underlie contemporary media software such as Photoshop, Illustrator, Maya, Final Cut and After Effects? How do their interfaces and tools shape the visual aesthetics of contemporary media and design? What happens to the idea of a 'medium' after previously media-specific tools have been simulated and extended in software? Is it still meaningful to talk about different mediums at all? Lev Manovich answers these questions and supports his theoretical arguments by detailed analysis of key media applications such as Photoshop and After Effects, popular web services such as Google Earth, and the projects in motion graphics, interactive environments, graphic design and architecture. Software Takes Command is a must for all practicing designers and media artists and scholars concerned with contemporary media

    TimeBender: Interactive Authoring of 3D Space-Time Narratives

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    Communication of scientific results and discoveries to, for example, fellow domain experts, business partners, students, or the general public, is an important part of research. Communication through visualization has been proven to be effective when the representations are memorable and engaging, and research has shown that these communicative visualizations can be further enhanced with narratives for certain audiences. A challenge faced by scientists is to create memorable and engaging visualizations for communication which traditionally has been done by trained illustrators and designers. Therefore, we created TimeBender, a framework and prototype implementation to bridge this gap specifically for authoring narrative posters in a 3D environment with a space-time dimension. The posters feature multiple scenes forming the narrative, which are connected by an elongated object encoding the narrative flow. We demonstrate that our approach is capable of aiding the authoring of these posters through a 3-step pipeline where, first, the scenes are set up individually, then, the global layout of scenes in the poster space is determined, before details, such as textual elements, are added. TimeBender supports animation as each scene is rendered dynamically within the poster. The framework and example results were evaluated in an expert interview with a professional illustrator.Masteroppgave i informatikkINF399MAMN-PROGMAMN-IN

    Exploiting Spatio-Temporal Coherence for Video Object Detection in Robotics

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    This paper proposes a method to enhance video object detection for indoor environments in robotics. Concretely, it exploits knowledge about the camera motion between frames to propagate previously detected objects to successive frames. The proposal is rooted in the concepts of planar homography to propose regions of interest where to find objects, and recursive Bayesian filtering to integrate observations over time. The proposal is evaluated on six virtual, indoor environments, accounting for the detection of nine object classes over a total of ∌ 7k frames. Results show that our proposal improves the recall and the F1-score by a factor of 1.41 and 1.27, respectively, as well as it achieves a significant reduction of the object categorization entropy (58.8%) when compared to a two-stage video object detection method used as baseline, at the cost of small time overheads (120 ms) and precision loss (0.92).</p
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