Search results for "etica."
showing 10 items of 13546 documents
L'Estetica della Natura nel Trascendentalismo americano
La tesi ricostruisce la visione estetica dei padri del Trascendentalismo americano, Ralph Waldo Emerson ed Henry David Thoreau. L'analisi è incentrata sull'esperienza estetica della natura, intesa come via privilegiata di cui l'uomo dispone per la conoscenza di se stesso, attraverso "lo splendido labirinto delle percezioni" e delle forme naturali. La ricerca analizza i tre saggi principali sulla natura di Emerson, redatti in un periodo che va dal 1836 al 1844, e il capolavoro di Thoreau, Walden del 1854, che declina la ricerca del maestro Emerson in modo originale, concentrandosi sulla nozione di selvaggio.
Sparsity-aware multiple relay selection in large multi-hop decode-and-forward relay networks
2016
In this paper, we propose and investigate two novel techniques to perform multiple relay selection in large multi-hop decode-and-forward relay networks. The two proposed techniques exploit sparse signal recovery theory to select multiple relays using the orthogonal matching pursuit algorithm and outperform state-of-the-art techniques in terms of outage probability and computation complexity. To reduce the amount of collected channel state information (CSI), we propose a limited-feedback scheme where only a limited number of relays feedback their CSI. Furthermore, a detailed performance-complexity tradeoff investigation is conducted for the different studied techniques and verified by Monte …
Compression and load balancing for efficient sparse matrix-vector product on multicore processors and graphics processing units
2021
We contribute to the optimization of the sparse matrix-vector product by introducing a variant of the coordinate sparse matrix format that balances the workload distribution and compresses both the indexing arrays and the numerical information. Our approach is multi-platform, in the sense that the realizations for (general-purpose) multicore processors as well as graphics accelerators (GPUs) are built upon common principles, but differ in the implementation details, which are adapted to avoid thread divergence in the GPU case or maximize compression element-wise (i.e., for each matrix entry) for multicore architectures. Our evaluation on the two last generations of NVIDIA GPUs as well as In…
XPS structural data and correlation with Mossbauer spectra for Tin-organic compounds: adducts of RnSnCl4-n with 1,2-bis(diphenylphosphino)ethane
1982
Abstract Core level X-ray photoelectron spectra of 1:1 adducts of SnCl4 and RSnCl3 with DPE {[RnSnCl4−n} · DPE (n = 1, R = Me, Bun, Octn, Phn; n = 2, R = Ph; DPE = 1,2-bis(diphenylphosphino)ethane], have been measured in solid phase. The Sn3d 5 2 binding energies, corrected for the Madelung potential at the metal atom, are well correlated with both partial atomic charge on tin, accounting for relaxation upon ionization, and 119Sn Mossbauer isomer shifts. The results are discussed in terms of these molecular parameters.
Interplay between the Belousov-Zhabotinsky reaction-diffusion system and biomimetic matrices
2007
Abstract Interactions between reaction–diffusion systems and restricted host environments are a subject of widespread interest. In this work the behaviour of the Belousov–Zhabotinsky reaction was investigated in lamellar phases formed by phospholipid bilayers with relevance for biological systems. The influence of the reactive medium on the structure of the lipid matrix and, in turn, the influence of the matrix on the dynamical evolution of chemical patterns, were studied by small angle scattering.
“Status quaestionis” sulle «Egloghe» dantesche. A proposito di un recente volume
2022
Breve rassegna sullo stato delle edizioni delle «Egloghe» di Dante Alighieri e dei principali studi a esse dedicati, a proposito della pubblicazione del volume di A. Renker, Streit um Vergil. Eine poetologische Lektüre der “Eklogen” Giovanni del Virgilios und Dante Alighieris, Stuttgart 2021. Brief review on the state of the editions of Dante Alighieri’s «Eclogues» and the main studies dedicated to them, regarding the publication of the volume by A. Renker, Streit um Vergil. Eine poetologische Lektüre der “Eklogen” Giovanni del Virgilios und Dante Alighieris, Stuttgart 2021.
Ķermeņa fenomenoloģija starpdisciplināru pētījumu kontekstā: tēžu krājums
2023
Projekta "Nogaidošie ķermeņi: vilcināšanās vakcinēties ķermeniskās pieredzes fenomenoloģiska analīze" (lzp-2021/1-0360) ietvaros 2023. gada 29. martā tika organizēta Latvijas Universitātes 81. starptautiskās zinātniskās konferences sekcija "Ķermeņa fenomenoloģija starpdisciplināru pētījumu kontekstā". Tēžu krājumā ir apkopoti sekcijā nolasīto referātu kopsavilkumi.
The chemical composition of the aerial parts essential oil of Achillea cretica L. (Asteraceae) growing wild in Crete (Greece)
2022
Achillea cretica (L.) (Asteraceae) is a suffruticosa camefite plant, mainly distributed in Crete, Aegean Islands, and eastern Mediterranean area. In the present study, the chemical composition of the essential oil from aerial parts of a not previously investigated accession of Achillea cretica, collected in Crete, was analysed by GC-MS. The results showed the presence of large quantity of α-bisabolol (53.88%) followed by the related compound α-bisabolol-oxide (2.76%), and spathulenol (5.94%). Based on the composition of the essential oils of all the other Achillea taxa, several consideration have been carried out.
On the Amount of Nonconstructivity in Learning Recursive Functions
2011
Nonconstructive proofs are a powerful mechanism in mathematics. Furthermore, nonconstructive computations by various types of machines and automata have been considered by e.g., Karp and Lipton [17] and Freivalds [11]. They allow to regard more complicated algorithms from the viewpoint of much more primitive computational devices. The amount of nonconstructivity is a quantitative characterization of the distance between types of computational devices with respect to solving a specific problem. In the present paper, the amount of nonconstructivity in learning of recursive functions is studied. Different learning types are compared with respect to the amount of nonconstructivity needed to lea…
Теория алгоритмов и программ
1986
Сборник посвящен исследованию различных типов вычислительных устройств, таких как альтернирующие вероятностные машины, а также проблемам индуктивного синтеза программ.