660 research outputs found

    After Sulla: study in the settlement and material culture of the Piraeus peninsula in the Roman and Late Roman period

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    Modem text-based and ancient historical accounts take the sack of Piraeus, the port of Athens in Greece, by the Romans under Sulla in 86 ВС as the terminal point of the history of the area in antiquity. Archaeological work on the town has tended so far to regard the post-Classical phases of the settlement as less interesting than those marking the 'heyday' of the port in the Classical period. This thesis explores the nature and scale of settlement in the area in the centuries spanning the town's destruction by the Romans in 86 ВС and the Late Roman period. The study is based on a re-assessment of archaeological data from old and recent rescue excavations in the modem town up to 1997. It also presents and discusses in detail the results of post-excavation work by the author on unpublished material from an extensive site excavated in the early 1980s, These results are compared to and synthesized with epigraphic and other testimonies to answer questions about the nature of settlement and the degree of social and cultural change in the area during the period in focus. The discussion focuses in particular on; 1) exploring continuity and change in the settlement patterns, demography and topography of the town, 2) the changing nature of domestic space and its organization, and 3) investigating patterns of pottery consumption and trade. These issues are examined in the context of the social, economic and cultural changes documented for the Roman imperial and Late Roman period by previous archaeological fieldwork and excavations in the region of southern Greece and the Aegean

    Identity spaces music space as a medium for sound

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    The work completed for this thesis starts with my initial interest in spatial music and concludes by placing space at the forefront of compositional thought. A shift in focus is attempted – from the traditional composer to the aural architect, a composer creating musical spaces within which sound is used to explore, reveal and illuminate those spaces. At the same time an unusual approach to what musical space is or could be is also outlined, along with a strong interest in unveiling virtual spaces, selected for their interesting aural identities. The portfolio contains a number of compositions created as a result of this research, as well as a preliminary set of tools based on the graphical programming language for music Max

    Greek early childhood educators’ knowledge of attention-deficit/hyperactivity disorder

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    As more children enter preschool programs, there is an increasing need for early education professionals to recognize and understand Attention-Deficit/Hyperactivity Disorder (ADHD). This study examined 120 Greek early childhood educators’ knowledge of ADHD using a Greek self-report ADHD Knowledge Questionnaire (ADHD-KQ). All participants worked in infant/child centers operated by municipalities in Greece. Results point out early childhood educators’ lack of fundamental knowledge about the causes, symptoms/diagnosis, cognitive deficits, and interventions regarding ADHD. Among the personal and professional variables (years of teaching experience, age, and educational level) studied as predictors of overall knowledge about ADHD age was found as the only significant. Older participants seemed to have better knowledge regarding the basic aspects of ADHD. Results suggest greater efforts must be made to provide training specifically in the management of children with ADHD

    Four Groups of Roman Pottery from the Sanctuary of Apollo at Halasarna on the Island of Kos

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    Τέσσερα σύνολα ρωμαϊκής κεραμικής από το ιερό του Απόλλωνα στην Αλάσαρνα της ΚωΣτην παρούσα μελέτη παρουσιάζονται τα ευρήματα κεραμικής από τέσσερα στρωματογραφημένα σύνολα των αυτοκρατορικών χρόνων που προέρχονται από την ανασκαφή του Τομέα Αρχαιολογίας και Ιστορίας της Τέχνης του Πανεπιστημίου Αθηνών στο ιερό του Απόλλωνα στην Αλάσαρνα (σημ. Καρδάμαινα) της Κω. Πρόκειται για υλικό που ήρθε στο φως κατά την ανασκαφική έρευνα του λεγόμενου Κτηρίου Δ, ενός μικρού δίστυλου εν παραστάσι ναού, στα ΒΑ του αρχαιολογικού χώρου. Τα ευρήματα παρουσιάζονται και αναλύονται σύμφωνα με τα ανασκαφικά τους συμφραζόμενα, καθώς επίσης σε συνάρτηση με τυποχρονολογικές και ποσοτικές παραμέτρους για κάθε σύνολο ξεχωριστά. Καλύπτοντας μια περίοδο 150 ετών από τα τέλη του 1ου/αρχές του 2ου αι. μ.Χ. μέχρι τα μέσα περίπου του 3ου αι. μ.Χ., τα σύνολα αυτά προσφέρουν μια ευρεία και αντιπροσωπευτική εικόνα της ποικιλίας των κεραμικών ειδών και της κυκλοφορίας τους στο ιερό σε διαχρονική κλίμακα. Τα δεδομένα αυτά  δίνουν τα δυνατότητα να εξεταστεί υπό διαφορετικό πρίσμα ο αντίκτυπος στην οικονομία, το εμπόριο και το παραγωγικό δυναμικό της Αλάσαρνας που είχε ο σεισμός του 139 ή 141/142 μ.Χ., ο οποίος σύμφωνα με φιλολογικές μαρτυρίες έπληξε με σφοδρότητα το νησί και άλλες περιοχές του ΝΑ Αιγαίου και της Μ. Ασίας.This study presents and discusses the pottery from four recently investigated stratified assemblages of Roman Imperial date from the University of Athens excavations at the sanctuary of Apollo in Halasarna (modern Kardamena) on the island of Kos. The deposits come from the area of the so-called Building Δ, a distyle in antis temple of the Roman Imperial period, which is located in the northeastern part of the site. They span a period of ca. one and a half centuries, from the later first/ early second to ca. the mid-third century CE. The pottery is presented and analyzed contextually, followed by a catalogue of selected diagnostic finds. Detailed quantified data for each assemblage are presented in an appendix, allowing an understanding of the relative volume of pottery wares circulating in the sanctuary, the sources from which they came and the changes in their relative proportions over time. In addition to providing the first detailed publication of Roman pottery from the island of Kos, the paper offers an opportunity to glimpse into the economy and trade links of Halasarna in imperial times, especially for the period after the earthquake of 139 or 141/142 CE that reportedly devastated the island

    Crystallization in Nano-Confinement Seeded by a Nanocrystal -- A Molecular Dynamics Study

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    Seeded crystallization and solidification in nanoscale confinement volumes have become an important and complex topic. Due to the complexity and limitations in observing nanoscale crystallization, computer simulation can provide valuable details for supporting and interpreting experimental observations. In this article, seeded crystallization from nano-confined liquid, as represented by the crystallization of a suspended gold nano-droplet seeded by a pre-existing gold nanocrystal seed, was investigated using molecular dynamics simulations in canonical (NVT) ensemble. We found that the crystallization temperature depends on nano-confinement volume, crystal orientation, and seed size as explained by classical two-sphere model and Gibbs-Thomson effect

    Directing cell migration and organization via nanocrater-patterned cell-repellent interfaces.

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    Although adhesive interactions between cells and nanostructured interfaces have been studied extensively, there is a paucity of data on how nanostructured interfaces repel cells by directing cell migration and cell-colony organization. Here, by using multiphoton ablation lithography to pattern surfaces with nanoscale craters of various aspect ratios and pitches, we show that the surfaces altered the cells focal-adhesion size and distribution, thus affecting cell morphology, migration and ultimately localization. We also show that nanocrater pitch can disrupt the formation of mature focal adhesions to favour the migration of cells towards higher-pitched regions, which present increased planar area for the formation of stable focal adhesions. Moreover, by designing surfaces with variable pitch but constant nanocrater dimensions, we were able to create circular and striped cellular patterns. Our surface-patterning approach, which does not involve chemical treatments and can be applied to various materials, represents a simple method to control cell behaviour on surfaces

    Substrate-Integrated Folded Waveguide Slot Antenna

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    In recent years a number of researchers have proposed novel techniques for fabricating rectangular waveguide using microwave integrated circuit techniques. These so-called substrate integrated guides have been fabricated using multilayer LTCC, multi- and single-layer microwave laminates and photoimageable thick films. All of these structures result in dielectric filled rectangular waveguide and as such have a width reduction of 1/square root of the relative permittivity over conventional waveguide. Furthermore, by their very nature they are easily integrated with planar transmission lines and circuits, allowing hybrid waveguide/microstrip systems to be fabricated on a single substrate. Several researchers have investigated slot antennas and arrays in substrate-integrated guide. In this paper we show a slot antenna in a folded substrate-integrated waveguide. These waveguides have half the width of the other types of substrate-integrated waveguide. As such the present structure allows arrays of slot antennas to be more highly integrated

    NIRT: gated transport through carbon nanotube membranes

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    Issued as final reportUniversity of California, Berkele
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