Search results for "Biton"
showing 4 items of 4 documents
Efficient Parallel Sort on AVX-512-Based Multi-Core and Many-Core Architectures
2019
Sorting kernels are a fundamental part of numerous applications. The performance of sorting implementations is usually limited by a variety of factors such as computing power, memory bandwidth, and branch mispredictions. In this paper we propose an efficient hybrid sorting method which takes advantage of wide vector registers and the high bandwidth memory of modern AVX-512-based multi-core and many-core processors. Our approach employs a combination of vectorized bitonic sorting and load-balanced multi-threaded merging. Thread-level and data-level parallelism are used to exploit both compute power and memory bandwidth. Our single-threaded implementation is ~30x faster than qsort in the C st…
On the Number of Closed Factors in a Word
2015
A closed word (a.k.a. periodic-like word or complete first return) is a word whose longest border does not have internal occurrences, or, equivalently, whose longest repeated prefix is not right special. We investigate the structure of closed factors of words. We show that a word of length $n$ contains at least $n+1$ distinct closed factors, and characterize those words having exactly $n+1$ closed factors. Furthermore, we show that a word of length $n$ can contain $\Theta(n^{2})$ many distinct closed factors.
Il Moderno e la Provincia : riflessioni grafiche su uno spazio mai nato: la Casa del Balilla di Luigi Moretti a Bitonto
2020
Luigi Moretti è stato indubbiamente uno dei più grandi architetti italiani del ‘900. La sua fortuna iniziò durante il ventennio fascista, quando progettò diversi edifici per l’Opera Nazionale Balilla, tra cui la sede di Bitonto, edificio non realizzato di dimensioni contenute, a cui la storiografia ha dedicato pochissimo spazio, derubricandolo forse ad un’esperienza di secondo piano nella carriera dell’architetto romano. Ma è davvero così? La località, centro minore (ricco di storia e tradizioni) nella provincia del Sud Italia, può avere influenzato le scelte progettuali? In che modo? Si può parlare di un progetto chiaro dello spazio? L’eventuale confronto con le altre Case del Balilla cost…
Rediscovery of the enigmatic solifuges (Arachnida: Solifugae) at Lampedusa Island (Italy)
2018
Solifuges were recorded in Italy for the first time in 1956, on the island of Lampedusa (Strait of Sicily), and classified as Biton ehrenbergi Karsch, 1880 and Biton velox Simon, 1885. More than 60 years later, we carried out the first targeted investigation of these little-known animals. A survey conducted during both spring and autumn 2017 confirmed the presence of solifuges on Lampedusa Island. We identified all specimens as B. velox and not B. ehrenbergi. We concluded that B. ehrenbergi is absent from the island, on the basis of both newly collected data and a re-evaluation of the past records. Morphology and taxonomic position of the examined specimens are discussed in light of the unr…