JA-trie: Entropy-based packet classification

Any improvement in packet classification performance is crucial to ensure Internet functions continue to track the ever-increasing link capacities. Packet classification is the foundation of many Internet functions: from fundamental packet-forwarding to advanced features such as Quality of Service en-forcement, monitoring and security functions. This work proposes a novel trie-based classification algorithm, named Jump-Ahead Trie (JA-trie), utilizing an entropy-based pre-processing phase and a novel approach to wildcard matching. Through extensive experimental tests, we demonstrate that our proposed algorithm is able to outperform a range of state-of-the-art classification algorithms.This work was jointly supported by the EPSRC INTERNET Project EP/H040536/1, by the National Science Foundation under Grant No. CNS-0855268, and by the MIUR project GreenNet (FIRB 2010).This is the accepted manuscript. The final version is available at http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6900878

Daylight-Transfer Systems: Physiological And Energetic Advantages

Daylight-transfer systems are devices designed to operate according to the law of reflection: they collect and transfer it to rooms lacking in light. On the whole, possible applications can deal with rooms which do not communicate directly with the outside. For instance, it can be the case of both basements and large-sized buildings like those devoted to the service industry. In recent years, the considerable attention devoted to sustainable development has prompted planners to reconsider the use of daylighting in architecture. Current research, partly examined in this article, aims at producing a range of systematised products and techniques according to some specific characteristics in order to highlight the advantages of these systems in terms of energy conservation as for essential artificial lighting and, consequently, to contribute towards decreasing the use of non-renewable sources of energy and related problems about sustainability

Test of candidate light distributors for the muon (g−-2) laser calibration system

The new muon (g-2) experiment E989 at Fermilab will be equipped with a laser calibration system for all the 1296 channels of the calorimeters. An integrating sphere and an alternative system based on an engineered diffuser have been considered as possible light distributors for the experiment. We present here a detailed comparison of the two based on temporal response, spatial uniformity, transmittance and time stability.Comment: accepted to Nucl.Instrum.Meth.