Beyond both estalished frameworks of derivative-based descent and stochastic search algorithms, the rise of expensive optimization problems creates the need for new specific approaches and procedures. The word ”expensive” —which refers to price and/or time issues— implies severely restricted budgets in terms of objective function evaluations. Such limitations contrast with the computational bur...

The future annotations of MultiLisp provide a simple method for taming the implicit par allelism of functional programs but require touch operations within all placeholder strict prim itives to ensure proper synchronization between threads These touch operations contribute substantially to program execution times We use an operational semantics of future devel oped in a previous paper to derive...

In this paper we study several existing notions of well-posedness for vector optimization problems. We distinguish them into two classes and we establish the hierarchical structure of their relationships. Moreover, we relate vector well-posedness and well-posedness of an appropriate scalarization. This approach allows us to show that, under some compactness assumption, quasiconvex problems are ...

This study resolves the controversy over the stability of constant time-gap policy for highway traffic flow. Previous studies left doubt as to the effectiveness of constant time-gap policies and whether they maintain stability in all traffic conditions. The results of this study prove that the constant time-gap policy is in fact stable to a limit. At this limit, depending on the boundary condit...

An experimental and numerical study of free convection heat transfer from a channel consisting of a vertical sinusoidal wavy surface and a vertical flat plate has been carried out. The vertical wavy surface was maintained at a constant temperature, while the flat plate is adiabatic. A Mach-Zehnder Interferometer was used to determine the local heat transfer coefficients of sinusoidal wavy surfa...