Saying beyond phenomenology: Levinas's response to Derrida

This thesis presents a study of Emmanuel Levinas’s Otherwise than Being or Beyond Essence as a response to the main philosophical problems and criticism that Jacques Derrida presents to Emmanuel Levinas’s earlier philosophy in his essay “Violence and Metaphysics”. The main philosophical question is: How can Emmanuel Levinas criticize ontology while using ontological language if ontological language carries with it the ontological presuppositions that he wants to avoid? This same question is treated in a way that leads us to deal with other major philosophical topics, mainly: ethics, subjectivity and tradition. In the last chapter of this thesis I claim that Otherwise than Being or Beyond Essence makes it easier to present Emmanuel Levinas’s philosophy as a critique of “metaphysics of presence”, and thus much closer to Jacques Derrida than it may seem.https://www.ester.ee/record=b5239765*es

HPLC-CUPRAC Post-Column Derivatization Method for the Determination of Antioxidants: A Performance Comparison Between Porous Silica and Core-Shell Column Packing

Background: An HPLC method employing a post-column derivatization strategy using the cupric reducing antioxidant capacity reagent (CUPRAC reagent) for the determining antioxidants in plant-based materials leverages the separation capability of regular HPLC approaches while allowing for detection specificity for antioxidants. Methods: Three different column types, namely core-shell and porous silica including two chemically different core-shell materials (namely phenyl-hexyl and C18), were evaluated to assess potential improvements that could be attained by changing from a porous silica matrix to a core-shell matrix. Tea extracts were used as sample matrices for the evaluation specifically looking at catechin and epigallocatechin gallate (EGCG). Results: Both the C18 and phenyl-hexyl core-shell columns showed better performance compared to the C18 porous silica one in terms of separation, peak shape, and retention time. Among the two core-shell materials, the phenyl-hexyl column showed better resolving power compared to the C18 column. Conclusions: The CUPRAC post-column derivatization method can be improved using core-shell columns and suitable for quantifying antioxidants, exemplified by catechin and EGCG, in tea samples

Mecanismos de reconfiguración eco-eficiente de código en aplicaciones móviles Android

Los dispositivos móviles ofrecen cada vez mayores prestaciones a costa de un mayor consumo energético. La energía consumida por un móvil no sólo depende de las aplicaciones en sí, sino también de las interacciones del usuario con la aplicación. Si un recurso no está siendo utilizado por la aplicación, no debería estar consumiendo energía. En este artículo se presenta un modelo de adaptación de aplicaciones móviles al contexto del usuario con el objetivo de reducir el consumo energético de las aplicaciones. Se desarrollan y evalúan cuatro implementaciones diferentes de la propuesta en busca del mecanismo de reconfiguración más eficiente energéticamente

Understanding the impact of line-of-sight in the ergodic spectral efficiency of cellular networks

In this paper we investigate the impact of lineof-sight (LoS) condition in the ergodic spectral efficiency of cellular networks. To achieve this goal, we have considered the kappa-mu shadowed model, which is a general model that provides an excellent fit to a wide set of propagation conditions. To overcome the mathematical complexity of the analysis, we have split the analysis between large and small-scale effects. Building on the proposed framework, we study a number of scenarios that range from heavily-fluctuating LoS to deterministic-LoS. Finally, we shed light on the interplay between fading severity and spectral efficiency by means of the amount of fading.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

Minimalismo modular generativo

A partir de las propiedades transformacionales y generativas de la forma, planteadas desde la matemática y geometrías como los fractales (Mandelbrot, 1984) y los sistemas iterados (Lindenmeyer y Presemslaw, 2000) plantean posibilidades de trabajo y modelación digital, basado en las denominadas morfologías de lo amorfo (Cañete, 2016, 2017a; 2018), buscando asimilarla a los principios propios de la arquitectura y estética moderna y contemporánea, como el trazo libre, minimalista y esencial, atendiendo en especial, a la riqueza de su patrones y configuraciones, como a sus propiedades escalares y transformacionales. Es así como, en publicaciones anteriores, se ha trabajado, desde la docencia universitaria y diversos proyectos de artes visuales, el trabajo y desarrollo de modelos de fragmentación y crecimiento escalar, que deriven en la generación de módulos, tramas, landscape, etc, entendiendo minimalismo y complejidad, como pares que se conjugan en el proceso generativo (generatrices morfológicas) mostrando diversas posibilidades de asimilación creativa desde la arquitectura

Design and Synthesis of a New Class of Twin-Chain Amphiphiles for Self-Assembled Monolayer-based Electrochemical Biosensor Applications

A new class of twin-chain hydroxyalkylthiols (mercaptoalkanols) featuring a nearly constant cross-section and the potential for modification of one or both termini are available with complete regioselectivity through Pd-mediated couplings of benzene diiododitriflate, including an example of a previously unreported coupling to generate an ortho-substituted arene bis acetic acid. Selfassembled monolayers (SAMs) prepared from the new amphiphiles demonstrate improved stability in an electrochemical sensor system compared with monolayers prepared from analogous single chain thiols

Effect of Sphaerosporella brunnea mycorrhizas on mycorrhization of Quercus ilex × Tuber melanosporum

It is generally accepted that Sphaerosporella brunnea is a significant ectomycorrhizal contaminant in nurseries producing plants mycorrhized with various species of Tuber, and subsequently in truffières after outplanting. At the University of Alcalá, Spain, 397 small plants of Quercus ilex which were mycorrhized with Tuber melanosporum were inadvertently contaminated with S. brunnea, and this contamination was then monitored for 2 years. Sixty percent of the plants were contaminated and had S. brunnea ascomata on the surface of the container on one or several occasions. However, a Spearman test provided no evidence that S. brunnea mycorrhizas affected T. melanosporum mycorrhization whereas other contaminating ectomycorrhizal fungi significantly did. Therefore, it appears that S. brunnea is not detrimental to plants which are well mycorrhized with T. melanosporum

Necesidades formativas en competencia digital del profesorado de instituciones educativas de Paraguay

This article seeks to investigate the training needs regarding the digital competence of teachers from 66 educational institutions in a city in Paraguay. The methodology used is quantitative, with a non-experimental cross-sectional and descriptive design, with a sample made up of 592 teachers. According to the results obtained, most of the teachers affirm that they did not receive adequate training in the use of ICT, they perceive themselves to have a basic training in digital competence and demand more training in the area of "specific training in applications" with the inclusion of a new subject "ICT and educational innovation" in the teacher curriculum. Thus, it was also found that the greater the perception of digital competence, the greater the frequency of ICT training during the exercise of teacher training. However, for the variables (gender, age) there are no significant differences regarding ICT training and training needs. It is concluded that there is an urgent need to improve the training processes of teachers regarding ICT, both in initial and continuous training, with pertinent adjustments in curricular designs that allow not only instrumental, but also pedagogical preparation of teachers in order to respond to the new educational demands from the classroom.El presente artículo busca indagar sobre las necesidades formativas en competencia digital de los docentes de 66 instituciones educativas de una ciudad de Paraguay. La metodología empleada es de tipo cuantitativa, con un diseño no experimental transversal y descriptivo, con una muestra conformada por 592 docentes. De acuerdo con los resultados, la mayoría de los docentes afirma que no recibieron una formación adecuada en el uso de las TIC, se autopercibe con una formación básica en competencia digital y demanda más formación en el área de «formación específica en aplicaciones» con la inclusión de una nueva asignatura «TIC e innovación educativa» en el currículo del profesorado. Se concluye que existe una imperiosa necesidad de mejorar los procesos formativos del profesorado con respecto a las TIC, tanto en la formación inicial como continua, con ajustes pertinentes de los diseños curriculares que permitan la preparación no solo instrumental, sino también pedagógica de los docentes

Radionuclides in arctic marine macroalgae from Kongsfjorden (Svalbard)

Seaweeds are known to be useful environmental bioindicators since they bioaccumulate radioisotopes at very low environmental concentrations. Levels of natural radionuclides in six ecologically relevant brown and red seaweed species from Arctic coasts (Kongsfjorden, Spitsbergen, Svalbard Islands) were analysed in the present study, in order to characterise the levels of natural radioactivity in this ecosystem and to compare this with previously published data in coastal areas from other latitudes. Thalli were collected by SCUBA divers at different depths in Hansneset in September 2014 and transported immediately to the laboratory. Young thalli, free from macroscopic epibiota, were dried, powdered and confined in a standard geometry before gamma spectrometry measurements. Then, the radioactivity of 7Be, 40K, 208Tl, 210Pb, 212Pb, 226Ra and 228Ra was measured by high-resolution gamma spectrometry using high-purity germanium detectors for 172800 s. Detectors were calibrated using a traceable multi gamma standard source and results are on a dry weight and fresh weight basis and are decay corrected to the date of sampling. Our results revealed the influence of cosmogenic radionuclides in the intertidal zone, as shown by the unique presence of 7Be in the brown macroalga Fucus distichus, the only analysed species inhabiting the intertidal. High concentrations of 40K were observed in all species, as this is one of the essential elements in biota. Remarkably is the high content of 210Pb in the red seaweeds Phycodrys rubens and Ptilota gunneri, suggesting that these species might possess a higher capacity for heavy metals bioaccumulation than the analysed brown seaweeds

PREPARATION AND MANAGEMENT OF THE MSc PROGRAME IN ENVIRONMENTAL SECURITY

Authors proposed an MSc Program related to Environmental Security and Management. This program endeavors to prepare students for the regional and global postgraduate job market