1,722,896 research outputs found
Le arti grafiche: protagoniste del nuovo stile
No full textIl testo è contenuto nel catalogo della mostra a cura di Luisa Martorelli e Fernando Mazzocca, (Napoli, Gallerie d’Italia – Palazzo Zevallos Stigliano 24 settembre 2020 – 24 gennaio 2021).
Nel testo si tratteggia il panorama delle arti grafiche a Napoli nel primo Novecento, relativamente allo stile Liberty. Si prendono in considerazione vari settori della grafica applicata, dalla cartellonistica pubblicitaria all'illustrazione editoriale, individuando i maggiori artisti operanti a Napoli in questi ambiti nei primi due decenni del Novecento
Generalizing Korchmáros-Mazzocca arcs
Get PDFIn this paper, we generalize the so called Korchmáros-Mazzocca arcs, that is, point sets of size intersecting each line in 0, 2 or t points in a finite projective plane of order q. When t is not 2 then this means that each point of the point set is incident with exactly one line meeting the point set in t points.
In PG(2,p^n), we change 2 in the definition above to any integer m and describe all examples when m or t is not divisible by p. We also study mod p variants of these objects, give examples and under some conditions we prove the existence of a nucleus
Blocking sets in
No full textLet S be a Desarguesian (n-1)-spread of a hyperplane ∑ of PG(rn, q). Let Ω and B̄ be, respectively, an (n-2)-dimensional subspace of an element of S and a minimal blocking set of an ((r-1)n+1)-dimensional subspace of PG(rn, q) skew to Ω. Denote by K the cone with vertex Ω and base B̄ , and consider the point set B defined by
B=( K\∑ ) ∪ {X ∈ S : X ∩ K ≠ Ø}
in the Barlotti-Cofman representation of PG(r,qn) in PG(rn, q) associated to the (n-1)-spread S. Generalizing the constructions of Mazzocca and Polverino (J Algebraic Combin, 24(1):61-81, 2006), under suitable assumptions on B̄ , we prove that B is a minimal blocking set in PG(r,qn). In this way, we achieve new classes of minimal blocking sets and we find new sizes of minimal blocking sets in finite projective spaces of non-prime order. In particular, for q a power of 3, we exhibit examples of r-dimensional minimal blocking sets of size qn+2+1 in PG(r,qn), 3 ≤ r ≤ 6 and n ≥ 3, and of size q4+1 in PG(r,q2), 4 ≤ r ≤ 6; actually, in the second case, these blocking sets turn out to be the union of q3 Baer sublines through a point. Moreover, for q an even power of 3, we construct examples of minimal blocking sets of PG(4, q) of size at least q2+2. From these constructions, we also get maximal partial ovoids of the hermitian variety H(4,q2) of size q4 + 1, for any q a power of 3
Generalizing Korchmáros-Mazzocca Arcs
No full textIn this paper, we generalize the so-called Korchmáros-Mazzocca arcs, that is, point sets of size q + t intersecting each line in 0, 2 or t points in a finite projective plane of order q. For t ≠ 2, this means that each point of the point set is incident with exactly one line meeting the point set in t points. In PG(2,p^n), we change 2 in the definition above to any integer m and describe all examples when m or t is not divisible by p. We also study mod p variants of these objects, give examples and under some conditions we prove the existence of a nucleus
Developing Secure Cloud Applications
Get PDFToday the main limit to Cloud adoption is related to the perception of a security loss the users have. Indeed, the existing solutions to provide security are mainly focused on Cloud service provider prospective in order to securely integrate frameworks and Infrastructures as a Services in a Cloud datacenter. Customer could not monitor and evaluate the security mechanisms enforced by service provider.
Service Level Agreements mainly focus on performance related terms and no guarantees are given for security mechanisms. Customers are interested in tools to verify and monitor the implemented security requirements. On the other hand, developers need tools to deploy Cloud applications offering measurable security grants to end users. In this paper, we propose an approach to implement security mechanisms as components in the application design process. We modeled security interactions according to the specific threat, the specific security requirements and user/application capabilities trying to improve security. It enables a Service Provider to offer security guarantees to customers.
The approach has been designed to fit with different Cloud platforms, but to demonstrate its applicability, we will present a case study on the mOSAIC Platform
The Laws of Magic and the Magic of Laws: A Study of the Unbreakable Vow from Harry Potter and the Half-Blood Prince from a Legal and Ontological Perspective
Get PDFThis work analyses the «Unbreakable Vow» as developed in the plot of the novel Harry Potter and the Half-Blood Prince from a legal and ontological perspective. In particular, the relationship between magic and law is investigated in light of social ontology and is compared to Roman law’s obligationes verbis contractae
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