Dynamic programming: An interactive approach

AbstractAn interactive approach to the formulation, modeling, analysis, and solution of discrete deterministic dynamic programming problems is presented. The approach utilizes APL both as the mathematical and the programming language. The interactive capabilities of APL and the simple one-to-one correspondence between the programming and the mathematical language provide an extremely convenient environment for dynamic programming investigations in general and for teaching/learning purposes in particular. The approach is illustrated by a simple model and a numerical example

Is the Mobile Phone a Disruptive Technology? A Partial Review of Evidence from Developing Countries

The authors of this chapter provide an inter-disciplinary review of studies on economic impacts of mobile telephony in developing countries, giving particular attention to the disruptive potential of the technology and its associated social practices. Four major areas of impact are identified: the emergence of a mobile phone economy around retail and service provision, including mobile banking; a significant reduction in search costs with profound impacts on market efficiency and, possibly, welfare distribution; changes in the formation and maintenance of trusting relationships between market actors as face-to-face contact is replaced with remote communication; and facilitated organisation and cooperation within and among firms, as well as changing credit procurement practices. While the mobile phone has been hailed for its transformative power, the authors tentatively conclude that its impact in most areas is not primarily disrupting, but rather amplifying existing structures