Pseudoclassical model for Weyl particle in 10 dimensions

A pseudoclassical model to describe Weyl particle in 10 dimensions is proposed. In course of quantization both the massless Dirac equation and the Weyl condition are reproduced automatically. The construction can be relevant to Ramond-Neveu-Schwarz strings where the Weyl reduction in the Ramond sector has to be made by hand.Comment: 5 page

Hermite polynomials, linear flows on the torus, and an uncertainty principle for roots

We study a recent result of Bourgain, Clozel and Kahane, a version of which states that a sufficiently nice function $f:\mathbb{R} \rightarrow \mathbb{R}$ that coincides with its Fourier transform and vanishes at the origin has a root in the interval $(c, \infty)$, where the optimal $c$ satisfies $0.41 \leq c \leq 0.64$. A similar result holds in higher dimensions. We improve the one-dimensional result to $0.45 \leq c \leq 0.594$, and the lower bound in higher dimensions. We also prove that extremizers exist, and have infinitely many double roots. With this purpose in mind, we establish a new structure statement about Hermite polynomials which relates their pointwise evaluation to linear flows on the torus, and applies to other families of orthogonal polynomials as well.Comment: 26 pages, 4 figure

Psychometric properties of Basic Empathy Scale among female juvenile delinquents and school youths

Research on empathy often distinguishes between affective and cognitive empathy, but there is limited knowledge regarding the application or measurement of these two dimensions of empathy among female youth, especially forensic samples of female youth. The main aim of the present study was to examine the psychometric properties of the Basic Empathy Scale (BES) among a Portuguese sample of female youths (N = 377), composed of incarcerated female juvenile offenders (n = 103) and school youths (n = 274). The two-factor structure of the BES obtained a good fit among the school sample, but the fit among the forensic sample was poor. Both samples demonstrated adequate psychometric properties in terms of Cronbach's alpha, omega coefficient, mean inter item correlations, corrected item-total correlation range, and criterion validity. However, some caution is advised when using the BES with female youth involved in the juvenile justice system, particularly with incarcerated female youth. (C) 2017 Elsevier Ltd. All rights reserved.European Social Fund (POPH/FSE)info:eu-repo/semantics/publishedVersio

Tetraquark Production in Double Parton Scattering

We develop a model to study tetraquark production in hadronic collisions. We focus on double parton scattering and formulate a version of the color evaporation model for the production of the $X(3872)$ and of the $T_{4c}$ tetraquark, a state composed by the $c \bar{c} c \bar{c}$ quarks. We find that the production cross section grows rapidly with the collision energy $\sqrt{s}$ and make predictions for the forthcoming higher energy data of the LHC.Comment: 13 pages, 3 figures. Corrections in the text and reference

The EU data protection reform and the challenges of big data: Tensions in the relations between technology and the law

In this article, we examine key features of the new EU General Data Protection Regulation (GDPR) in the light of implications of big data technologies. We will focus specifically on the original regulatory approaches introduced by the GDPR relying on risk assessment and management and on self-defense by Internet users, seeking to interpret them in view of a law-technology lag versus a law-technology driving perspective, meaning a legislative policy guided essentially by the intent to foster technological innovation and competitiveness in the Digital Single Market. Indeed, the current EU data protection reform seemingly fails to provide the appropriate caution that should be expected from a law designed to protect a fundamental human right. Notwithstanding the declared aspirations of the GDPR, the decision-making power on what and how to collect, store, and process personal data is leaning to the operators and data controllers to the disadvantage of data subjects and supervisory authorities. While technological conditions, namely the automatisation inherent to data mining and data analytics, render the effectiveness of key data protection principles harder to pursue, it is also true that the increasing suppleness of the regime is furthered by the Regulation’s own regulatory choices.info:eu-repo/semantics/publishedVersio

Between uncertainty and controversy: has the European Union actually responded to the challenges of GMO regulation?

DINÂMIA, Junho de 2008.The legal regime applicable to Genetically Modified Organisms (GMOs) in the European Union is an important witness to the central position assumed by risk in European regulatory and institutional reform over the last years. At the European level, the GMO regime provides an archetypical response by the regulator to the challenges raised by scientific uncertainty, social controversy and the weakening of national frontiers. The need to act in situations where knowledge about relevant facts is insufficient or uncertain presents a test to the regulator and more generally to a legal system in which the verification or proof of the truth has traditionally been the requirement for both activating the law and for determining their possible violation. The precautionary principle provides the primary EU response to this challenge. Its inclusion in EU legislation on GMOs entails the recognition of the actual lack of conclusive evidence of harm which may be caused by the experimental use, the cultivation or industrial application of GMOs. At the same time, the extent of the public controversy surrounding this biotechnology led the EU to reconsider and possibly reinforce mechanisms for involving the civil society in the regulatory process. Yet, at the end of the day, the GMO regime structures the whole system for the assessment and management of the risk on the use of science and scientific opinions. This article seeks to examine this apparent paradox and the way in which the GMO regime attempts to resolve it. This analysis will lead us in the end to questioning whether by meeting the risk raised by the development and use of GMOs in the way it does, the EU is not generating a sort of regulatory failure.FC