Search results for "Caliza"

Parametric self-trapping in the presence of randomized quasi phase matching

2010

We report on experimental evidence of parametric spatial solitons in a quadratic crystal with randomized periodic ferroelectric poling. Two-color self-focusing via quadratic cascading overcomes the diffractive nature of both fundamental and frequency-doubled beams.

RSS-eye: Human-assisted Indoor Localization without Radio Maps

2015

The pervasive diffusion of smartphones is boosting indoor positioning solutions and location-based services. We propose a novel methodology to perform indoor positioning of mobile users by the estimation of angles of arrival from access points whose locations are known. Angles of arrival are estimated by correlating WiFi RSSI measurements with data coming from a digital compass, which is provided by most current handsets. Our system has minimal requirements in terms of infrastructure and mobile hardware. The system neither needs calibration, nor radio maps but requires the user to perform a gesture when an estimation is needed. The resulting on-demand localization has advantages in terms of…

Il progetto “Oltre l’orizzonte: contro-narrazioni dai margini al centro”

2020

Il contributo descrive il progetto europeo OLTRE, acronimo di “Oltre l’orizzonte: Contro-narrazioni dai margini al centro”, è un progetto cofinanziato dalla Commissione europea, in particolare dal DG Affari Interni (Fondo per la Sicurezza Interna - Programma per l’Empowerment della Società Civile). OLTRE nasce con la finalità precipua di contribuire alla prevenzione dei fenomeni di radicalizzazione islamica sul territorio italiano, principalmente attraverso una campagna di comunicazione online. Per prevenire la radicalizzazione è necessario ridurre la vulnerabilità dei soggetti ritenuti “a rischio”, nel nostro caso specifico i giovani italiani con background migratorio di fede musulmana.

Mecanismo y teleología en la Lógica de Hegel

2016

<p class='p1'>¿Cómo hay que entender la tesis de Hegel en la Lógica de que “la teleología es la verdad del mecanismo”? La afirmó contra Kant, desde luego; a saber, contra la posibilidad de que lo que parece teleológico sea sólo mecánico; pero no en el sentido de un compromiso dogmático con la realidad de fines naturales y tampoco en el de una refutación del mecanicismo como la que Fichte busca con su radicalización de la filosofía trascendental. Aquí se examina qué posibilidades quedan abiertas cuando se cierran aquéllas.</p>

ESCR Review: Citizenship and Politics

2020

This chapter describes the analyses and results for the ESRC Domain of Citizenship and Politics, guided by two main questions: How digital technology impacts on our autonomy, agency, and privacy; Whether and how our understanding of citizenship is evolving in the digital age. It first provides an initial overview of the major insights from the literature review and analysis, the Delphi surveys, and workshop discussions about the relevant range of the concepts of citizenship and politics in a digital age. Over time the literature shows a shift from issues of public sphere and use of the Internet by government and candidates to more focus on political participation and engagement, especially …

Second-Generation Muslim Youth Between Perception and Change: A Case Study on the Prevention of Radicalization

2020

The following article presents the results of a research-action and an online communication campaign on the prevention of radicalization of second-generation young Italian Muslims as a part of a project called “Oltre” (the Italian acronym means “Beyond”) financed by European Union. After a short presentation of the four steps of the prevention communication model PKIC, a deepening on the radicalization factors, and a focus on the research-action methodology, the results of the research on some fundamental issues like the relationship with family and the relation with media and social media of the young interviewees, are shown. Finally, in the last part of the article, the interventions carr…

Les Temps modernes et le tournant transcendantal. Blumenberg, Kant et la question du monde

2012

International audience; Blumenberg’s phenomenology of the history of concepts couldn’t overlook Kantian inventions to escape the dead ends of metaphysics. Kant constitutes a decisive help in mapping the ruptures of Modern Age. On the one hand, the cosmogonical essays of the precritical period illustrate reason’s typically modern self-assertion. On the other hand, the transcendental turn stands for a radicalization of Modern Age towards the Enlightenment. But Blumenberg also pays attention to what, in Kant, disturbs the modern project of reason’s self-authorization. Transcendental philosophy always calls for a new beginning, because it anticipates its possible failure.

α1-Adrenoceptors in the rat cerebral cortex: New insights into the characterization of α1L- and α1D-adrenoceptors

2010

36 p., figuras y tablas, bibliografía

Exploiting physical layer flexibility for high-capacity and ultra-dense wireless networks

2020

Towards an Understanding of the Polar Diels–Alder Reactions of Nitrosoalkenes with Enamines: A Theoretical Study

2006

The polar Diels–Alder reactions of nitrosoalkenes with enamines have been studied using DFT methods at the B3LYP/6-31G* level of theory. These Diels–Alder reactions are characterized by a nucleophilic attack of the enamine at the conjugated position of the nitrosoalkene with concomitant ring-closure. The reactions present a total regioselectivity and a large endo selectivity. The analysis, based on the global electrophilicity of the reagents in the ground state, the natural bond orbital (NBO), and the topological analysis of the electron localization function (ELF) in the endo transition state (TS) and “halfway” along the IRC between the TS and cycloadduct, correctly explain the polar natur…