We report that vertical vibration with small amplitude and high frequency can tame convective heat transport in Rayleigh–Bénard convection a turbulent regime. When is applied, dynamically averaged ‘anti-gravity’ results stabilizes the thermal boundary layer inhibits eruption of plumes. This eventually leads to attenuation intensity large-scale mean flow significant suppression transport. Accoun...

This paper provides an overview of recent development in the area of optimal synthesis of process water networks in which a major goal is to reduce the freshwater consumption by the reuse and recycle of process and treatment streams. The recent models can globally optimize these networks through mixed-integer nonlinear programming techniques. We discuss the application and impact of these techn...

We argue that citizens distinguish the tone of a campaign from the quality of information that it provides and that evaluations on each dimension respond differently to positive and negative political advertising. We test these claims using survey and advertising data from the 2000 presidential campaign and two 1998 gubernatorial races. In each race, citizens separate judgments about the tone o...

This paper analyzes the interaction between intergenerational wealth transmission, human capital investments under uninsurable labor income risk, and economic growth in a small open overlapping-generations economy with heterogeneous agents. It demonstrates how the role of the personal income distribution for an economy’s process of development through risky human capital accumulation depends on...

We present measurements of the Nusselt number N as a function of the Rayleigh number R in cylindrical cells with aspect ratios 0. 5</=gamma identical withD/d</=12.8 ( D is the diameter and d is the height). We used acetone with a Prandtl number sigma = 4.0 for 10(5) less, similarR less, similar4x10(10). A fit of a power law N = N(0)R(gamma(eff)) over limited ranges of R yielded values of gamma(...