Phase change phenomena in clusters are often modeled by augmenting physical interaction potentials with an external constraining potential to handle evaporation processes in finite temperature simulations. These external constraining potentials exert a pressure on the cluster. The influence of this constraining pressure on phase change phenomena in 38-atom Lennard-Jones clusters is investigated...

Integrating ICT in teaching and learning is high on the educational reform agenda of developed and developing countries. For developing countries, ICT can be seen as a way to merge and even leapfrog into a globalizing, technological world. Yet in practice the use of ICT for teaching practice is limited at best. Much research is therefore done on factors influencing or constraining the use of IC...

I briefly discuss the derivation of dispersive sum rules constraining semileptonic form-factors. I outline the use of these constraints in the context of charmless semileptonic decays and suggest how, in combination with other theoretical and experimental information, they may reduce the uncertainties in the extraction of V ub .

This study was conducted in Abia state, Nigeria with specific objectives to: describe socio economic characteristics of ADP and non-ADP contact farmers; estimate profitability level of the two farmer groups; compare profitability of cassava production among the two farmer groups; determine factors that influence profitability of ADP and non-ADP contact cassava farmers and identify problems cons...

Various characteristics of complex gene regulatory networks (GRNs) have been discovered during the last decade, e.g., redundancy, exponential indegree distributions, scale-free outdegree distributions, mutational robustness, and evolvability. Although progress has been made in this field, it is not well understood whether these characteristics are the direct products of selection or those of ot...