1,354,070 research outputs found
La filosofia dell'uomo di Jean-Luc Marion tra Cartesio e la fenomenologia
No full textJean-Luc Marion è oggi conosciuto soprattutto per la sua proposta filosofica nota come fenomenologia della donazione. E la critica filosofica si occupa oggi di studiare sempre più tale proposta.
Tuttavia la fenomenologia della donazione non può essere adeguatamente compresa se non come trasgressione e insieme radicalizzazione della filosofia cartesiana, alla luce della più recente prospettiva fenomenologica che ha trovato in Husserl, Heidegger e Levinas i più autorevoli interpreti. Cartesio, agli occhi di Marion, è colui che, portandone alla luce i limiti e le possibilità, conduce la metafisica ad esigere e far spazio alla fenomenologia, quasi come suo più rigoroso proseguimento ma, insieme, superamento. E se la metafisica deve essere trasgredita dalla fenomenologia, ciò non può che passare per la trasgressione dell’ego cartesiano e dunque per la rielaborazione della nozione stessa di fenomeno, che nella fenomenologia classica risulta ancora eccessivamente segnato dalle istanze cartesiane. La categoria che permette tale processo di trasgressione è, per il filosofo francese contemporaneo, quella di distanza, come evento ultimo della donazione.
Ripercorrendo i differenti momenti della riflessione di Marion sviluppatasi in più di 40 anni, il lavoro tenta così di mostrare come attraverso la categoria di distanza sia possibile la trasgressione dell’ego cartesiano in una prospettiva radicalmente fenomenologica, fino alla tematizzazione di una soggettività specificamente caratterizzata dal fenomeno erotico, ossia quel fenomeno che, istituendo l’essere umano nella sua intrinseca condizione filiale, gli consente di comprendersi radicalmente chiamato alla libertà inesauribile del dono di sé in quanto essere donato, all’interno della precarietà della storia.Today Jean-Luc Marion is mainly famous for his philosophical proposal known as phenomenology of givenness. And critics are involved today in studying more and more this proposal.
However the phenomenology of givenness can’t be suitably understood if not as transgression and radicalization of the Cartesian philosophy, in the light of the up-to-date phenomenological perspective, which has found in Husserl, Heidegger and Levinas the most powerful exponents. Descartes, according to Marion, is the person who, by bringing to light the limits and the possibilities, leads metaphysics to claim and to make room for phenomenology, almost as its most rigorous development but also its overcoming. And if metaphysics has to be transgressed by phenomenology, that can’t be achieved unless through the transgression of the Cartesian ego and therefore through the revision of the concept of phenomenon, which in the classical phenomenology is still too marked by the Cartesian connotations. The category which allows this process of transgression is, for the contemporary French philosopher, that of distance, as the last event of givenness.
Looking over the different moments of Marion’s reflection developed in more than 40 years, the work tries in this way to show that the distance category allows the transgression of the Cartesian ego in a thoroughly phenomenological perspective, up to the thematization of a subjectivity specifically characterized by the erotic phenomenon, that is the phenomenon which, by establishing the human being in his intrinsic filial condition, allows him to understand himself, radically appointed to the boundless liberty of the gift of himself, as he is given to himself and to others through himself, in the inner contingency of history
Functional imaging by 11C-metomidate PET: a really useless technique for Primary Aldosteronism subtyping?
No full textSoinio et al. recently compared the diagnostic accuracy of 11C-metomidate PET (11C-MTO-PET) and cosyntropin-stimulated adrenal venous sampling (AVS) for the subtyping of patients with primary aldosteronism (PA), who were diagnosed according to the 2008 Endocrine Society guidelines. They concluded that 11C-MTO-PET offered no diagnostic usefulness in subtyping of PA patients. In our view, this conclusion needs to be taken with great caution owing to a number of concerns that can be raised concerning their study
18F-choline PET/CT and PET/MRI in primary and recurrent hyperparathyroidism: a systematic review of the literature
No full textThe aims of the present systematic review were to: (1) assess the role of 18F-fluorocholine (FCH) positron emission tomography (PET) with computed tomography (CT) and PET with magnetic resonance imaging (MRI) in patients with biochemically known hyperparathyroidism; (2) compare the diagnostic performance of FCH PET/CT or PET/MRI with conventional morphological and functional imaging. A literature search until December 2019 was performed in the PubMed, Scopus and Web of Science databases, using the terms “choline” AND “PET” AND “hyperparathyroidism”. The search was conducted with and without the addition of filters (e.g., language: English only; type of article: original article; subjects: humans only) and selecting only articles published in the last 5 years. Twenty-three articles and 1112 patients were considered. Different FCH PET/CT acquisition protocols were adopted across the studies, using dynamic, early or delayed scans. FCH PET/CT proved more accurate than ultrasonography (US) or 99mTc-sestamibi single-photon emission tomography (SPET). PET/MRI also seemed to be more accurate than MRI alone in detecting benign parathyroid lesions. FCH PET/CT is more accurate than conventional morphological and functional imaging modalities (US or SPET) for the detection of benign parathyroid lesions. It could, therefore, be a reliable tool in both primary and recurrent hyperparathyroidism
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Brainstem glucose hypermetabolism in ALS/FTD and shorten survival: a 18F-FDG PET/MR study
No full textIntroduction: A few 18F-FDG (FDG) PET-CT studies revealed the presence of brain hypermetabolism in the brainstem and cervical spinal cord of patients within the Amyotrophic Lateral Sclerosis - Frontotemporal Dementia (ALS/FTD) spectrum. We aim to investigate this finding through a hybrid PET-MR system, allowing a more precise spatial pattern of metabolic changes in the brainstem and cervical spinal cord. Methods: Twenty-eight patients with a diagnosis of ALS or behavioural variant FTD plus motoneuron disease and 13 healthy subjects underwent 18F-FDG PET-MR study. Mean normalized FDG uptake values in the midbrain/pons, medulla oblongata, and cervical spinal cord defined on individual's MR scans were compared between groups. Furthermore, the associations between regional FDG uptake values and clinical and demographic characteristics, including gene mutation, type of onset (bulbar, spinal, dementia), and clinical characteristics were investigated. Results: A significant (P < 0.005) increment in glucose metabolism in the midbrain/pons and medulla oblongata was found in ALS/FTD patients in comparison to controls, independent from the type of disease onset. No relevant associations between clinical and metabolic features were reported, although medulla oblongata hypermetabolism was associated with shortened survival (P < 0.001). Conclusion: Increased glucose metabolism in the brainstem might be due to the local activation of astrocytes. FDG PET/MR could be a valuable tool to assess glial changes in the ALS/FTD spectrum and could serve as a prognostic biomarker. Large prospective initiatives would likely shed more light on the promising application of PET/MR in this setting
Variations on the Author
No full text“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Author, publisher and bookseller : a tripartite synergy in Nigerian book industry
No full textThis work is about the roles of Author, Publisher and Bookseller in Book development in
Nigeria. The paper started by delving into the history of Book Publishing in Nigeria after
which it proceeded by defining who an author, a publisher, and a bookseller is and
expatiated on the indispensable roles of these key actors in Nigerian Book Industry and in
the emerging Information Society. Furthermore, the various constraints to book
development were identified while the paper advised on how the Book Industry can be
further promoted in Nigeria. However, the paper concluded and made recommendations
on how the Book sector can help in enhancing scholarship in the country
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