111,896 research outputs found
La representación de la comunidad italiana en argentina a través del diario Il Mattino d’Italia de Buenos Aires
No full textLa stampa fascista argentina in italiano e la rappresentazione delle italo-argentine e degli italo-argentini
No full textAnalysis-preserving protection of user privacy against information leakage of social-network Likes
No full textRecent scientific results have shown that social network Likes, such as the "Like Button" records of Facebook, can be used to automatically and accurately predict even highly sensitive personal attributes. Although this could be the goal of a number of non-malicious activities, to improve products, services, and targeting, it represents a dangerous invasion of privacy with possible intolerable consequences. However, completely defusing the information power of Likes appears improper. In this paper, we propose a protocol able to keep Likes unlinkable to the identity of their authors, in such a way that the user may choose every time she expresses a Like, those non-identifying (even sensitive) attributes she wants to reveal. This way, analysis anonymously relating Likes to various characteristics of people is preserved, with no risk for users' privacy. The protocol is shown to be secure and also ready to the possible future evolution of social networks towards P2P fully distributed models
Living shell-like structures
No full textA decade ago, the so-called Kr\"{o}ner-Lee decomposition---primarily introduced to discern between elastic and (visco-)plastic strains---was given a broader scope and a deeper interpretation than the original ones, as describing the interplay between the actual and the relaxed configuration of each body element. The main intended application was to growth mechanics of soft living tissues. In 2002, a novel (tensorial) balance law governing the time evolution of the relaxed configuration was devised, and endowed with a proper constitutive theory, thus establishing the foundations of a dynamical theory of material remodelling. Material remodelling does not describe explicitly the chemistry or whatever else is acting behind the changes in material structure. However, it does account explicitly for the power expended by the biochemical control system, which is of the essence for modelling the mechanics of living tissue. Material remodelling discriminates active from passive remodelling, while treating both on the same footing. Thus it provides mechanistic models of living materials without conceiving of them as inert materials engineered with magic constitutive recipes. The present study develops a toy model of saccular aneurysms, focussing on the two-way coupling between growth and stress
author-bios-SRD-19-0063.R1 – Supplemental material for The Network Structure of Police Misconduct
No full textSupplemental material, author-bios-SRD-19-0063.R1 for The Network Structure of Police Misconduct by George Wood, Daria Roithmayr and Andrew V. Papachristos in Socius</p
V-ATPase as an effective therapeutic target for sarcomas.
No full textMalignant tumors show intense glycolysis and, as a consequence, high lactate production and proton efflux activity. We investigated proton dynamics in osteosarcoma, rhabdomyosarcoma, and chondrosarcoma, and evaluated the effects of esomeprazole as a therapeutic agent interfering with tumor acidic microenvironment. All sarcomas were able to survive in an acidic microenvironment (up to 5.9–6.0 pH) and abundant acidic lysosomes were found in all sarcoma subtypes. V-ATPase, a proton pump that acidifies intracellular compartments and transports protons across the plasma membrane, was detected in all cell types with a histotype-specific expression pattern. Esomeprazole administration interfered with proton compartmentalization in acidic organelles and induced a significant dose-dependent toxicity. Among the different histotypes, rhabdomyosarcoma, expressing the highest levels of V-ATPase and whose lysosomes are most acidic, was mostly susceptible to ESOM treatment
On the use of an approximate constraint preconditioner in a potential reduction algorithm for quadratic programming
No full textWe focus on the reuse of Constraint Preconditioners in the iterative solution of the augmented systems arising in Interior Point methods. We analyze different strategies for choosing the outer iterations in which the preconditioner is recomputed, in the context of a Potential Reduction algorithm for convex Quadratic Programming. The performance of these strategies is illustrated through a set of numerical experiments
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Le politiche della paura: la figura del nemico in Argentina e Brasile (1937-1945)
No full textNel corso del Novecento il continente americano è stato ripetutamente segnato dall’insorgere e dal diffondersi di politiche dell’odio. Odio razziale, odio politico, odio di classe. Già a partire dall’incontro fra europei e nativi, alla fine del XV secolo, il rapporto con l’“altro” è stato attraversato, tanto nel Nord quanto nel Sud America, da un alternarsi di contrapposizioni spietate, violenze e forme di subordinazione. Il Sud segregato, l’anticomunismo e l’antianarchismo negli Stati Uniti, la strategia della “sicurezza nazionale” in molti paesi dell’America latina sono altrettanti esempi di pratiche repressive basate sull’individuazione di volta in volta di un “nemico” da combattere ed eliminare. Il volume ripercorre in chiave storica alcuni episodi di odio politico in varie realtà del continente – Argentina, Brasile, Colombia, El Salvador, Messico, Stati Uniti – a partire dai quali è possibile sviluppare una riflessione sull’importanza del riconoscimento reciproco come meccanismo di base di ogni comunità politica. Contributi di C. Bernardi, R. Carocci, F. Casafina, A. Ciulla, L. Fotia, F.D. Ragno, V. Ruggiero, G. Santangeli Valenzani, F. Zega
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