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1	Poseidonia-Paestum revisited : Tracing aspects of place attachment in an ancient context Byström, Emelie January 2017 (has links) The city of Poseidonia-Paestum on the Italian peninsula has a long and manifold history throughout Antiquity. The city was founded by Greek settlers in the seventh century BC, put under Lucanian rule around 400 BC, and was finally colonized by the Romans in the year of 273 BC. This study aims to connect the tangible traces of history to the intangible feelings for a place and explore how these elements give rise to the psychological process of place attachment. The concept holds and interdisciplinary potential and thus is possible to apply to the ancient material from Poseidonia-Paestum. The Greek agora, the Roman forum and the extramural Sanctuary of Santa Venera is approached and analysed from this perspective. A close reading of previous research on place attachment in combination with the archaeological record from Poseidonia-Paestum has formed the basis for analysing the material. This study has shown that it is possible to contextualize the theoretical framework of place attachment in an ancient material by pointing out the semiotic potency of the material remains from Poseidonia-Paestum. Through this perspective new questions have been raised and interpreted. Ultimately, a deeper understanding of the attitudes and ideas that formed the basis of human actions and decisions in the ancient city of Poseidonia-Paestum has been reached. Poseidonia Paestum place place attachment environmental psychology Sanctuary of Santa Venera Greek agora Roman forum displacement continuity Archaic Classical Roman Lucania identity community History and Archaeology Historia och arkeologi
2	A comparison of multiple techniques for the reconstruction of entry, descent, and landing trajectories and atmospheres Wells, Grant 05 April 2011 (has links) The primary importance of trajectory reconstruction is to assess the accuracy of pre-flight predictions of the entry trajectory. While numerous entry systems have flown, often these systems are not adequately instrumented or the flight team not adequately funded to perform the statistical engineering reconstruction required to quantify performance and feed-forward lessons learned into future missions. As such, entry system performance and reliability levels remain unsubstantiated and improvement in aerothermodynamic and flight dynamics modeling remains data poor. The comparison is done in an effort to quantitatively and qualitatively compare Kalman filtering methods of reconstructing trajectories and atmospheric conditions from entry systems flight data. The first Kalman filter used is the extended Kalman filter. Extended Kalman filtering has been used extensively in trajectory reconstruction both for orbiting spacecraft and for planetary probes. The second Kalman filter is the unscented Kalman filter. Additionally, a technique for using collocation to reconstruct trajectories is formulated, and collocation's usefulness for trajectory simulation is demonstrated for entry, descent, and landing trajectories using a method developed here to deterministically find the state variables of the trajectory without nonlinear programming. Such an approach could allow one to utilize the same collocation trajectory design tools for the subsequent reconstruction. Implicit Explicit Integration Kalman Unscented Extended Huygens Galileo Phoenix MER Pathfinder Viking Mars 6 Vega Venus Earth Mars Jupiter Titan Pioneer Venus Venera Control Optimal Reconstruction Filter Collocation Trajectory Space trajectories

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Poseidonia-Paestum revisited : Tracing aspects of place attachment in an ancient context

A comparison of multiple techniques for the reconstruction of entry, descent, and landing trajectories and atmospheres