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on Project, Program and Portfolio Management |
| By: | Cristina Giorgiantonio (Bank of Italy); Valentina Giovanniello (Bank of Italy) |
| Abstract: | There has been a significant increase in project financing in the public sector in Europe in the past decade, benefiting the implementation of infrastructure projects. In Italy, project financing is still much more limited than in such countries as Spain and the UK: the projects funded are smaller and the sectors involved are less appropriate. Based on the economic literature, European initiatives and international comparisons, the paper examines the aspects of the regulations that could encourage the appropriate use of project financing and considers the problems with the Italian regulations, proposing some corrective measures. The main limitations involve: i) uncertainties over the allocation of administrative and regulatory risks; ii) poor procedures for selecting the private contractors; iii) relative lack of attention to the contract terms; and iv) inadequate safeguards to ensure the bankability of the projects. |
| Keywords: | infrastructure financing, project financing, regulation, risk allocation |
| JEL: | K23 L51 L90 |
| Date: | 2009–11 |
| URL: | http://d.repec.org/n?u=RePEc:bdi:opques:qef_56_09&r=ppm |
| By: | Wolfram Wiesemann; Daniel Kuhn; Berc Rustem |
| Abstract: | Temporal networks describe workflows of time-consuming tasks whose processing order is constrained by precedence relations. In many cases, the durations of the network tasks can be influenced by the assignment of resources. This leads to the problem of selecting an ‘optimal’ resource allocation, where optimality is measured by network characteristics such as the makespan (i.e., the time required to complete all tasks). In this paper, we study a robust resource allocation problem where the functional relationship between task durations and resource assignments is uncertain, and the goal is to minimise the worst-case makespan. We show that this problem is generically NP-hard. We then develop convergent bounds for the optimal objective value, as well as feasible allocations whose objective values are bracketed by these bounds. Numerical results provide empirical support for the proposed method. |
| Keywords: | Robust Optimisation, Temporal Networks, Resource Allocation Problem |
| Date: | 2009–11–06 |
| URL: | http://d.repec.org/n?u=RePEc:com:wpaper:020&r=ppm |
| By: | Caminati, Mauro |
| Abstract: | This paper suggests a knowledge based approach to the formation of collaboration networks in basic research. Though mainly focused on foundations, it provides the example of a knowledge distribution supporting pairwise equilibrium outcomes which correspond to a star-like collaboration network. |
| Keywords: | ideas; knowledge endowment; modularity; collaboration game; pairwise equilibrium; star network. |
| JEL: | O30 D85 |
| Date: | 2009–11–25 |
| URL: | http://d.repec.org/n?u=RePEc:pra:mprapa:18864&r=ppm |