The cold metal rolling industry needs reliable and accurate models to improve predictions of surface finish and friction and thus increase productivity and improve quality. These models are used in setup programs for schedule optimisation, for on-line control algorithms and to help determine process improvements. In most cold rolling operations, lubricant is used to reduce frictional forces, to...

In this paper, we present a novel technique for modeling, checking, and enforcing temporal constraints in workkow processes containing conditionally executed activities. Existing workkow time model-ing proposals either do not discriminate between time constraints that apply to disparate execution paths, or they treat every execution path independently. Consequently, superruous time constraint v...

In this paper a mixed-model assembly-line sequencing problem with the goal of minimizing work overload is addressed. We consider time windows in work stations of the assembly line (closed stations). Different versions of a product to be assembled in the line (e.g. automotive industry), which require different processing time according to the work required in each work station are considered. In...

An arrangement of curves in the real plane divides it into a collection of faces. Already in the case of line arrangements, this collection can be given a structure of a left regular band and one can ask whether the same is possible for other arrangements. In this paper, we try to answer this question for the simplest generalization of line arrangements, that is, conic–line arrangements. Invest...

Paddling in a data lake is strenuous for a data scientist. Being a loosely-structured collection of raw data with little or no meta-information available, the difficulties of extracting insights from a data lake start from the initial phases of data analysis. Indeed, data preparation, which involves many complex operations (such as source and feature selection, exploratory analysis, data profil...

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