7,894 research outputs found

    Placing your Coins on a Shelf

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    We consider the problem of packing a family of disks \u27on a shelf,\u27 that is, such that each disk touches the x-axis from above and such that no two disks overlap. We prove that the problem of minimizing the distance between the leftmost point and the rightmost point of any disk is NP-hard. On the positive side, we show how to approximate this problem within a factor of 4/3 in O(n log n) time, and provide an O(n log n)-time exact algorithm for a special case, in particular when the ratio between the largest and smallest radius is at most four

    Where do we go from here? Recording and analysing Roman coins from archaeological excavations

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    The publication of English Heritage's guidelines for the analysis and publication of coins from excavations has not met with acceptance by the relevant specialists. This paper takes the opportunity to look back over what we have been doing, consider what the guidelines suggest, and makes recommendations as to where we could be going. In particular it argues that we should be making more of existing database technologies and the internet, and that the analysis of coins should be integrated with other aspects of the archaeological record. The paper is not a new set of guidelines, but is intended to stimulate debate

    Mansi Sacred Covers

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    The topic of the Mansi sacred covers is an interesting aspect of Mansi religious and mythic culture. The sacred covers occupy a special place in Mansi art. They represent a highly important element of religious ritual practice and embody a fundamental idea that underlies many social structures, such as household cohesiveness, family welfare, and the fortune of successive generations. Most of the material is described from the Northern groups of Mansi

    Dynamic Composite Data Physicalization Using Wheeled Micro-Robots

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    This paper introduces dynamic composite physicalizations, a new class of physical visualizations that use collections of self-propelled objects to represent data. Dynamic composite physicalizations can be used both to give physical form to well-known interactive visualization techniques, and to explore new visualizations and interaction paradigms. We first propose a design space characterizing composite physicalizations based on previous work in the fields of Information Visualization and Human Computer Interaction. We illustrate dynamic composite physicalizations in two scenarios demonstrating potential benefits for collaboration and decision making, as well as new opportunities for physical interaction. We then describe our implementation using wheeled micro-robots capable of locating themselves and sensing user input, before discussing limitations and opportunities for future work

    When We Found Us

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    A collection of pieces which represent a use of magic or mythic themes as applied to real-world experiences through both poetry and fiction work. An examination of the progress of the author through these themes and subjects curated in more-or-less chronological order by time of conception. The brutal mundanity of the rural Midwestern experience mingled alongside the magic-realism and mythic archetypes which span throughout history

    Spring 1981

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    Ritualizing the Use of Coins in Ancient Greek Sanctuaries

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