Effect of speculative prefetching on network load in distributed systems

Previous studies in speculative prefetching focus on building and evaluating access models for the purpose of access prediction. This paper on the other hand investigates the performance of speculative prefetching. When prefetching is performed speculatively, there is bound to be an increase in the network load. Furthermore, the prefetched items must compete for space with existing cache occupants. These two factors-increased load and eviction of potentially useful cache entries-are considered in the analysis. We obtain the following conclusion: to maximise the improvement in access time, prefetch exclusively all items with access probabilities exceeding a certain threshold.

Homeland, territory, property: contesting land, state, and nation in urban Timor-Leste

This article considers contestations over land, state and nation in Aitarak Laran, an urban settlement in post-independence Timor-Leste. Since 2010 the settlement has been resisting eviction by the East Timorese state, which wishes to use the land it occupies to build a National Library and Cultural Centre. In exploring the contestation, the purpose of this article is two-fold. Firstly, it explores the nature of social connection to land within postcolonial state- and nation-building. Here, the contestation at Aitarak Laran reveals counter-posed imaginings of land as homeland, territory and property. Secondly, the article draws out the implications of these counter-posed imaginings for thinking about the 'right to the city', a notion first theorised by Lefebvre (1996 [1968]) and subsequently developed to encompass a range of modes of urban protest. In the settlement, the promises of independence-unity, equivalence, and inclusion within the sovereign nation-state-are at odds with residents' experiences of what independence has in fact brought. Land, in its multiple imaginings, becomes a crucible upon which this painful disjuncture plays out. Reading Aitarak Laran as an instance of 'right to the city' struggle, these tensions emerge as well not only in practice but also in theory, reflected particularly in the limitations and ambiguities of rights discourse.