Software engineering must cope with a more and more increasing need for evolutivity of software systems in order to make their maintenance and more generally their administration easier. However, evolution and especially dynamic evolution in a system must not be done at the expense of its reliability, that is to say its ability to deliver the expected functionalities. Actually modi cations in a...

This paper deals with the concept of a semi-public good. These semi-public goods are characterized by the fact that their use is being supplemented by specific private goods. The consumption of this complementary private good is constrained by an individual quantity constraint for each individual agent. The quantity constraints depend on the level of the semi-public good. For instance, car driv...

This paper describes a new algorithm for generation of scheduling constraints in networks of communicating processes. Our model of communication intertwines the schedules of the machines in the network: timing constraints of a machine may aaect the schedules of machines communicating with it. This model of communication facilitates the modular speciication of timing constraints 1]. A feasible s...

Morphology and syntax have both received attention in statistical machine translation research, but they are usually treated independently and the historical emphasis on translation into English has meant that many morphosyntactic issues remain underresearched. Languages with richer morphologies pose additional problems and conventional approaches tend to perform poorly when either source or ta...

We discuss the problem of sequencing precedence-constrained jobs on a single machine to minimize the average weighted completion time. This problem has attracted much attention in the mathematical programming community since Sidney’s pioneering work in 1975 (Sidney, J. B. 1975. Decomposition algorithms for single machine scheduling with precedence relations and deferral costs. Operations Resear...