This paper reports on preliminary numerical experiments in optimizing coolant flows in continuous casting of steel with respect to multiple objectives. For this purpose, Differential Evolution for Multiobjective Optimization (DEMO) coupled with a reliable numerical simulator of the casting process was applied. The algorithm parameters were initially tuned to balance between the quality of the e...

What has been the effect of the shift in emerging market capital flows toward private sector borrowers? Are emerging markets capital flows more efficient? If not, can controls on capital flows improve welfare? This paper studies these questions in a world with two forms of default risk. When private loans are enforceable, but there is the risk of national default, constrained efficient capital ...

This paper presents a trajectory planning algorithm for multi-axis systems. It generates smooth trajectories of any order subject to general initial and final conditions, and constant state and control constraints. The algorithm is recursive, as it constructs a high order trajectory using lower order trajectories. Multi-axis trajectories are computed by synchronizing independent single-axis tra...

Selecting a set of alternatives based on the preferences of agents is an important problem in committee selection and beyond. Among the various criteria put forth for desirability of a committee, Pareto optimality is a minimal and important requirement. As asking agents to specify their preferences over exponentially many subsets of alternatives is practically infeasible, we assume that each ag...

The content of the publication is the sole responsibility of the authors and it in no way represents the views of the Commition or its services. Abstract Preferences of a set of n individuals over a set of alternatives can be represented by a preference proole being an n-tuple of preference relations over these alternatives. A social choice correspondence assigns to every preference proole a su...

We present a fast addition algorithm in the Jacobian of a genus 3 non-hyperelliptic curve over a field of any characteristic. When the curve has a rational flex and char(k) > 5, the computational cost for addition is 148M + 15SQ + 2I and 165M + 20SQ + 2I for doubling. An appendix focuses on the computation of flexes in all characteristics. For large odd q, we also show that the set of rational ...

What has been the effect of the shift in emerging market capital flows toward private sector borrowers? Are emerging market capital flows more efficient? If not, can controls on capital flows improve welfare? This paper shows that the answers depend on the form of default risk. When private loans are enforceable, but there is the risk that the government will default on behalf of all residents,...

We prove the following results for task allocation of indivisible resources: • The problem of finding a leximin-maximal resource allocation is in P if the agents have max-utility functions and atomic demands. • Deciding whether a resource allocation is Pareto-optimal is coNP-complete for agents with (1-)additive utility functions. • Deciding whether there exists a Pareto-optimal and envy-free r...

This paper presents a new efficient and fast approach to texture characterization for high-speed web inspection applications (mainly focused on textured material grading and fault detection). The texture description proposed makes use of semicover concept over binary planes derived from grey images. A measure of the local semicover tendency based on joint occurrences of elementary semicover pat...