We report a scanning tunnelling microscopy investigation of the emission of dislocations around nanoindentations in the form of dislocation arrangements previously called hillocks , consisting of two pairs of Shockley partial dislocations, each encompassing a stacking fault. The spatial arrangement and size distribution of hillocks around the nanoindentation traces are studied. We show that standard dislocation theory for an isotropic continuum can be used to describe the stability of the hillocks, their size and spatial distribution and the broadening of the (...) corresponding extended dislocations near the surface. A model is proposed in which hillocks originate from the split into dislocations partials of primary perfect dislocation loops punched into the crystal by the scanning tunnelling microscope tip. This model implies the operation of a novel dislocation mechanism involving long-range transport of matter across the surface. (shrink)

El presente trabajo analiza la teoría de la imitación desarrollada por Walter Benjamin en el célebre ensayo sobre la obra de arte. Se pretende abordar el ensayo como una nueva muestra de la “investigación sobre el origen” ya empleada en sus obras anteriores, lo cual nos permitirá esclarecer el papel privilegiado que Benjamin asigna a la “mimesis” como el “origen” que revela la ley unitaria de toda la época. El ensayo, por tanto, supera el reducido ámbito de la estética en (...) el que ha sido tradicionalmente enmarcado y apunta a una reflexión más amplia sobre las contradicciones internas de la modernidad, respecto de la cual la mimesis señala a la vez el problema y una posible vía de salida. (shrink)

The objective of this paper is to make a rhetorical analysis of the op-ed entitled «Finding Design in Nature» by Cardinal Christoph Schönborn, Archbishop of Vienna, published by The New York Times in 2005, three months after the death of John Paul II. In this essay, the Cardinal states that it is an error to affirm that Catholic doctrine is compatible with the «neo-Darwinist» theory of evolution and that the Roman Catholic Church accepts that theory. For the Archbishop, the origin (...) of this error lies in the abuses committed in the interpretation of John Paul’s 1996 speech in which the Pope affirmed that evolution was more than a hypothesis and showed himself more favourable towards evolutionary theory than his predecessors. In his article the Cardinal described that papal message as «vague and unimportant». In this paper, the rhetorical techniques used by Schönborn in his article are analysed: the lexical choices to make a negative assessment of «neo Darwinist» evolutionary theory; the argumentative definition to make a polemical description of that theory; and the polyphonic proceedures designed to decontextualise the papal discourse and present Catholic beliefs as the truth. We interpret Cardinal Schönborn’s position as a rhetorical change with respect to John Paul II’s 1996 speech. From our point of view, the Archbishop directed his criticism against evolutionary theory not only because of its scientific theories (not rejected by Church teaching) but also for being potentially dangerous in its use by certain authors as a scientific argument in defence of their atheism. (shrink)

This paper focuses on the problematic relationship between method and object in Walter Benjamin’s research. In order to do this, first we will try to clarify the dialectical structure of the notion of “critique”, which plays a key role in his method of historical knowledge. Benjamin’s peculiar appropriation of Goethean “dialectics” will allow us then to show the structural affinity that exists between the medium of representation and the historical object represented, paying special attention to the particular case of the (...) object called “Baroque”. (shrink)

Parnas y Sass han ofrecido una tesis acerca de la Esquizofrenia en la que indican que su núcleo básico y originario es un trastorno del self. Ese trastorno consiste en: i) una reducción o aplacamiento del self o de la ipseidad, y ii) la hiper-reflexividad, que refiere a un tipo de conciencia del self exagerada, tendiente a focalizar y objetivar los fenómenos y los procesos de la conciencia que normalmente se experimentan de modo implícito como siendo del self. La ipseidad, (...) en cuanto conciencia pre-reflexiva del self, se configura en la síntesis pasiva; lo que sugiere que el núcleo central de los delirios o de la esquizofrenia radica en un nivel pre-reflexivo de la consciencia. El objetivo de este ensayo es ofrecer un marco base, a partir de lo que Husserl ha llamado “la síntesis pasiva”, pertinente para la comprensión de ese núcleo de la esquizofrenia y el trastorno de ipseidad como un problema en un nivel pre-reflexivo de la consciencia; útil, además, para indicar que los delirios o la esquizofrenia tienen que ver más con los aspectos empíricos de la experiencia que con problemas en la racionalidad del paciente. (shrink)

The trade and technological war initiated in 2018 between China and the United States has increased interest in the possible hegemonic succession. In this paper, starting from the concept of interstate hegemony, a comparative analysis of the material capabilities of each power in five areas: productive, technological, commercial, monetary-financial and military. This analysis makes it possible to quantify whether China can surpass the United States. As a result, it is concluded that China is far from surpassing the United States in (...) the military and monetary-financial areas, but it can compete in the productive, commercial, and certain critical technological sectors. (shrink)