This article investigates how managers in public-private partnership (PPP) projects respond to social or physical events during the implementation of their projects, and which of their responses produce satisfactory outcomes. Multi-value Qualitative Comparative Analysis (mvQCA) was used to...

Small scale farmers in Ethiopia are already operating on their land frontier and the scope for an increase in production and rural income should come, among others, through improvement in technical and allocative efficiency. Although the stake of efficiency improvement is substantial, the number...

The importance of increments to an existing highway system depends upon their contributions to the accessibility provided by the existing network. Nearly 40 years ago, Mohring [1965] suggested this logic for planning optimal highway investment programs. He argued it could be implemented by...

Public-private partnerships (PPPs) are being frequently used today to private sector investment in road projects. Most of the road PPP projects are either for new roads or for those that involve significant expansion of existing capacity. There are limited instances of PPPs for renovating and...