This document reviews the existing mechanisms for site renumbering for both IPv4 and IPv6, and it identifies operational issues with those mechanisms. It also summarises current technical proposals for additional mechanisms. Finally, there is a gap analysis identifying possible areas for future work.

Environmental change is an acknowledged factor influencing human migration. Analytical research regarding the relationship between the environment and human migration has increased in recent years yet still faces numerous hurdles, partly due to limited availability of suitable data. We review available data and methodologies for investigating the environment-migration nexus, identifying data in...

In this paper we reconsider the connectedness effect discussed by Kayne (1983), and illustrated in the examples (1)-(3). Kayne observed that in VO languages, left branch constituents are strong islands for extraction; however, an illegitimate gap inside a left branch island can be rescued by another gap embedded in a lower right branch constituent. The examples in (1)-(2) illustrate preverbal s...

In this paper we investigate model-independent bounds for exotic options written on a risky asset using infinite-dimensional linear programming methods. Based on arguments from the theory of MongeKantorovich mass-transport we establish a dual version of the problem that has a natural financial interpretation in terms of semi-static hedging. In particular we prove that there is no duality gap.