Programmers often need to initialise circular structures of objects. Initialisation should be safe (so that programs can never suffer null pointer exceptions or otherwise observe uninitialised values) and modular (so that each part of the circular structure can be written and compiled separately). Unfortunately, existing languages do not support modular circular initialisation: programmers in p...

In high dimensional settings, sparse structures are crucial for efficiency, either in term of memory, computation or performance. In some contexts, it is natural to handle more refined structures than pure sparsity, such as for instance group sparsity. Sparse-Group Lasso has recently been introduced in the context of linear regression to enforce sparsity both at the feature level and at the gro...

Ports are the most important economic, political and military bottlenecks. This puts shoreline structures (port) in the class of important structures and they have a crucial role in the countries’ life. Pile and deck wharf and their access bridges and offshore deck (jetties), are one of the parts which are supplier of coupling between the land and the waterfront. Correct and exact estimation of...

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We extend the Faulty RAM model by Italiano and Finocchi (2008) by adding a safe memory of arbitrary size S, and we then derive tradeoffs between the performance of resilient algorithmic techniques and the size of the safe memory. In particular, we describe a resilient algorithm for sorting n entries in O (n logn+ α(δ/S + logS)) time using Θ (S) safe memory locations, where α ≤ δ denotes the act...