HAL-UNICE
Not a member yet
30584 research outputs found
Sort by
Status of the Advanced Virgo gravitational wave detector
No full textInternational audienceAdvanced Virgo is the French–Italian second generation laser gravitational wave detector, successor of the Initial Virgo. This new interferometer keeps only the infrastructure of its predecessor and aims to be ten times more sensitive, with its first science run planned for 2017. This article gives an overview of the Advanced Virgo design and the technical choices behind it. Finally, the up-to-date progresses and the planned upgrade for the following years are detailed
On the non-perturbative realization of QCD gauge-invariance
No full textInternational audienceA few years ago the use of standard functional manipulations was demonstrated to imply an unexpected property satisfied by the fermionic Green’s functions of QCD: effective locality. This feature of QCD is non-perturbative as it results from a full integration of the gluonic degrees of freedom. In this paper, previous derivations of effective locality are reviewed, corrected, and enhanced. Focusing on the way non-Abelian gauge-invariance is realized in the non-perturbative regime of QCD, the deeper meaning of effective locality is discussed
Miniature Antenna for IoT Devices Using LoRa Technology
No full textInternational audienceIn this paper, the way to design different shapes of miniature antenna for LoRa devices are presented. With dimension of 0.06 lambda x 0.1 lambda the proposed antennas are printed on 34x80x0.8 mm3 FR-4 board . The simulation and experiment results show a good agreement with expectations of the electrical small antennas that operate at 868 MHz frequency band. Moreover, the changeable geometry of the designs while keeping a good performance proves that miniature antennas can be created to be more appealing as logos or figures
Emotions and personality traits in argumentation: An empirical evaluation1
No full textInternational audienceArgumentation is a mechanism to support different forms of reasoning such as decision making and persuasion and always cast under the light of critical thinking. In the latest years, several computational approaches to argumentation have been proposed to detect conflicting information, take the best decision with respect to the available knowledge, and update our own beliefs when new information arrives. The common point of all these approaches is that they assume a purely rational behavior of the involved actors, be them humans or artificial agents. However, this is not the case as humans are proved to behave differently, mixing rational and emotional attitudes to guide their actions. Some works have claimed that there exists a strong connection between the argumentation process and the emotions felt by people involved in such process. We advocate a complementary, descriptive and experimental method, based on the collection of emotional data about the way human reasoners handle emotions during debate interactions. Across different debates, people’s argumentation in plain English is correlated with the emotions automatically detected from the participants, their engagement in the debate, and the mental workload required to debate. Results show several correlations among emotions, engagement and mental workload with respect to the argumentation elements. For instance, when two opposite opinions are conflicting, this is reflected in a negative way on the debaters’ emotions. Beside their theoretical value for validating and inspiring computational argumentation theory, these results have applied value for developing artificial agents meant to argue with human users or to assist users in the management of debates
Towards Artificial Argumentation
No full textInternational audienceThe field of computational models of argument is emerging as an important aspect of artificial intelligence research. The reason for this is based on the recognition that if we are to develop robust intelligent systems, then it is imperative that they can handle incomplete and inconsistent information in a way that somehow emulates the way humans tackle such a complex task. And one of the key ways that humans do this is to use argumentation either internally, by evaluating arguments and counterarguments‚ or externally, by for instance entering into a discussion or debate where arguments are exchanged. As we report in this review, recent developments in the field are leading to technology for artificial argumentation, in the legal, medical, and e-government domains, and interesting tools for argument mining, for debating technologies, and for argumentation solvers are emerging
How to determine if a random graph with a fixed degree sequence has a giant component
No full textInternational audienc
Microfoundations of dynamic capabilities building: The exploratory case of a Mexican community-based enterprise
No full textInternational audienceOur study follows Teece (2007) and Felin et al. (2012)‘s perspective and addresses dynamic capabilities through the lens of their microfoundations. It implies investigate them as embedded in firms at micro levels of analysis: individuals’ engagement in sensing, seizing and transforming and/or associated processes. Through an exploratory and abductive case study, we analyze the cognitive and motivational components of such an engagement, in relation with the environmental and organizational contexts in which it takes place
Stability of restrictions of cotangent bundles of hypersurfaces
No full textLet be a general smooth hypersurface of dimension . It is well-known that the cotangent bundle is stable. In this note, we prove that the restriction over a general smooth hypersurface of with is stable except for some well-known examples. We also address the cases where the Picard group increases by restriction
A note on some constants related to the zeta–function and their relationship with the Gregory coefficients
No full textInternational audienceIn this article, new series for the first and second Stieltjes constants (also known as generalized Eu-ler's constant), as well as for some closely related constants are obtained. These series contain rational terms only and involve the so–called Gregory coefficients, which are also known as (reciprocal) logarithmic numbers, Cauchy numbers of the first kind and Bernoulli numbers of the second kind. In addition, two interesting series with rational terms for Euler's constant γ and the constant ln 2π are given, and yet another generalization of Euler's constant is proposed and various formulas for the calculation of these constants are obtained. Finally, we mention in the paper that almost all the constants considered in this work admit simple representations via the Ramanujan summation