24 research outputs found

    The Džarylgač Survey Project

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    The Džarylgač Survey Project (DSP) is an archaeological research project that, using a variety of field survey methods, aims to study the interaction between Greek colonists and indigenous populations in northwestern Crimea (present-day Ukraine) during the late Classical and early Hellenistic period (late 5th - 3rd century BC). The project, named after the lake around which fieldwork was done, entails field surveys, test excavations, environmental studies and geophysical prospections and has furnished important new insights in the local settlement history, not only during the period of Greek presence but also for the Bronze Age and early modern period

    An optimization framework for solving capacitated multi-level lot-sizing problems with backlogging

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    This paper proposes two new mixed integer programming models for capacitated multi-level lot-sizing problems with backlogging, whose linear programming relaxations provide good lower bounds on the optimal solution value. We show that both of these strong formulations yield the same lower bounds. In addition to these theoretical results, we propose a new, effective optimization framework that achieves high quality solutions in reasonable computational time. Computational results show that the proposed optimization framework is superior to other well-known approaches on several important performance dimensions
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