Le monde du travail et de l’emploi au Mexique

Le processus de mondialisation de l’économie a eu un impact très négatif sur le travail et sur l’emploi au Mexique. Le programme d’ajustement structurel mis de l’avant par la Banque mondiale, l’entrée du Mexique au sein du GATT (Accord général des tarifs douaniers et du commerce) en 1986, et de façon encore plus accélérée, l’entrée en vigueur du Traité de libre-échange nord-américain ont favorisé la mise en oeuvre d’un faux concept de compétitivité qui repose sur la dévalorisation du travail. Sans une démocratisation de l’économie et de la politique, sa revalorisation sera impossible

Notas sobre el comportamiento militar en la Guerra Social

This article aims to analyse the attitudes and the military behaviour that both Italic and Roman people showed throughout the Social War, an incident that is just the final straw of the complex situation of the “Italic Matter” in which Rome knew not how, or did not want to, share its benefits with the resourceful ally instrument. Thus, we get use of the military field and, more specifically, of the attitudes, positions and behaviours, to elicit the global structure of the society behind it

Nonlocal Lagrangian formalism

This thesis aims to study nonlocal Lagrangians with a finite and an infinite number of degrees of freedom. We obtain an extension of Noether's theorem and Noether's identities for such Lagrangians. We then set up a Hamiltonian formalism for them. Furthermore, we show that $r^{\rm th}$-order Lagrangians can be treated as a particular case, and the expected results are recovered. Finally, the method developed is applied to different examples: nonlocal harmonic oscillator, $p$-adic particle, $p$-adic open string field, and electrodynamics of dispersive media.Comment: Ph.D thesis. Further supplementary material can be found at www.carlosherediapimienta.co

Arqueología del postconflicto : la práctica edilicia de Pompeii tras el Bellum Sociale

El Bellum Sociale (91-87 a.C.) fue el primer episodio de la guerra civil que experimentó el sistema republicano tardío. Este artículo trata de analizar su impacto arqueológico, utilizando como objeto de estudio de las prácticas edilicias de Pompeii.The Social War (91-87 B.C.) was the first episode of civil war that the Late Roman republican system experienced. This article seeks to reflect on its archaeological impact, using as an object of study the practices of building of Pompeii

The Social War as civil war : an initial step in the analysis of its nature

The Social War (91-87 BCE) is the prelude to the civil wars process that defines the first century BCE. However, its nature remains controversial, an inheritance of the same Antiquity, and it is difficult to discern whether or not it is in fact a civil war, since the affected contingents are Italics and do not have Roman citizenship (ciuitas). This article seeks to shape the debate so as to permit more detailed studiesThe Social War (91-87 BCE) is the prelude to the civil wars process that defines the first century BCE. However, its nature remains controversial, an inheritance of the same Antiquity, and it is difficult to discern whether or not it is in fact a civil war, since the affected contingents are Italics and do not have Roman citizenship (ciuitas). This article seeks to shape the debate so as to permit more detailed studies El Bellum Sociale como guerra civil : un primer paso en el análisis de su naturalezaEl Bellum Sociale (91-87 a.C.) supone el preludio al proceso de guerras civiles que define el siglo I a.C. Sin embargo, su carácter permanece controvertido, una herencia que proviene de la misma Antigüedad, siendo difícil discernir si se trata o no de una guerra civil, ya que los contingentes sublevados eran itálicos y no poseían la ciudadanía romana (ciuitas). Este artículo busca reflexionar al respecto con la finalidad de permitir estudios más detallado

Nonlocal Lagrangian fields and the second Noether theorem. Non-commutative U(1)U(1) gauge theory

This article focuses on three main contributions. Firstly, we provide an in-depth overview of the nonlocal Lagrangian formalism. Secondly, we introduce an extended version of the second Noether's theorem tailored for nonlocal Lagrangians. Finally, we apply both the formalism and the extended theorem to the context of non-commutative U(1) gauge theory, including its Hamiltonian and quantization, showcasing their practical utility.Comment: 35 pages, JHEP Published versio

Nonlocal Lagrangian fields: Noether's theorem and Hamiltonian formalism

This article aims to study nonlocal Lagrangians with an infinite number of degrees of freedom. We obtain an extension of Noether's theorem and Noether's identities for such Lagrangians. We then set up a Hamiltonian formalism for them. In addition, we show that n-order local Lagrangians can be treated as a particular case, and the standard results can be recovered. Finally, this formalism is applied to the case of p-adic open string field

On the reduction of 4-oxo-4h-benzopyran-3-carbaldehydes : global and local electrophilicity patterns

The theoretical global and local electrophilicity patterns of substituted and chelated 4-oxo-4H-benzopyran-3-carbaldehydes (formylchromones) have been evaluated using the electrophilicity index proposed by Parr et al [J. Am. Chem. Soc. 1999, 121, 1922]. The complexation of formylchromones with aluminum predicts a strong electrophilic character of these compounds against nucleophiles. Local response at the active sites may also be assessed in terms of a global contribution described by the global electrophilicity, and a local contribution described by the variations in electrophilic Fukui function at those sites. The highest local electrophilicity is found at the formyl group of the chelated formylchromones, in spite of that, the highest positive charge is located on the pyrone carbonyl group. This result is consistent with the experimental observed reactivity displayed by 4-oxo-4H-benzopyran-3-carbaldehydes in the presence of 2-propanol and alumina

Energy-momentum tensor for the electromagnetic field in a dispersive medium

On the basis of a non-local Lagrangian for Maxwell equations in a dispersive medium, the energy-momentum tensor of the field is derived. We obtain the Field equations through variational methods and an extension of Noether theorem for a non-local Lagrangian is obtained as well. The electromagnetic energy-momentum tensor obtained in the general context is then specialized to the case of a field with slowly varying amplitude on a rapidly oscillating carrier