134,612 research outputs found
Marietta : polka pour piano / par Bardin-Royer ; [couv. ornée par] J. et D.
No full textTitre uniforme : Bardin-Royer, Eugénie (18..-1923). Compositeur. [Marietta. Piano]Polkas (piano) -- +* 1800......- 1899......+:19e siècle:Piano, Musique de -- +* 1800......- 1899......+:19e siècle
Del hombre a la materia: Simondon a la luz de Marx y Althusser
No full textUna tentativa de aproximación conjunta de Simondon, Marx y Althusser se ve enfrentada con tres pensadores cuya distancia es puesta en evidencia por los pesos respectivos de sus historiografías filosóficas: puede ser que un día, cuando podamos comprender el pensamiento de Simondon a partir de sus efectos, podamos hablar de él en plural, así como hoy debemos elegir entre varios Marx y varios Althusser. Entonces hablaremos del Marx al que Simondon se refiere de manera polémica, en particular a través de su crítica del paradigma del trabajo, al cual le opone su nuevo paradigma, anti-sustancialista y anti-determinista. Este paradigma, que estaba lejos de las visiones oficiales de los partidos comunistas, era en medida compartido por Marx y Althusser. A los fines de aclarar esto, nos referiremos brevemente a diferentes aspectos de la filosofía de Althusser que, aunque fueron elaborados en otras matrices teóricas y políticas, suenan familiares a los de Simondon. Luego discutiremos –desde un punto de vista marxiano– los límites de la aproximación política simondoniana, para finalmente indicar, dentro de su epistemología, la fuente de una posible filosofía política materialista. Una crítica de la antropología de la libertad y la determinación, con la que Althusser trata nivel histórico, parece abrir un camino común. Este no es un camino que Simondon habría aceptado calificar como “materialista”, pero nos permite comprender aquello que su filosofía nos autoriza a pensar: de hecho, el propósito de nuestra intervención es sugerir que la “epistemología política” de Simondon nos lleva a responder a los presupuestos teóricos sobre los que se ha desarrollado el patrón dominante de la ciencia política moderna."De l'homme à la matière. Simondon à la lumière de Marx et Althusser". Cahiers Simondon, no. 5, 2013, pp. 25-43.Facultad de Humanidades y Ciencias de la Educació
La société, «machine autant que vie»: régulation et invention politique entre Wiener, Canguilhem et Simondon
No full textEn reprenant, à la lumière des nouveaux acquis de la physique, la circulation conceptuelle entre la biologie, la technologie et les sciences sociales, qui s’était amorcée au début du XXe siècle, la philosophie de Simondon questionne l’image du monde que nous avons héritée de la première modernité. C’est à l’intérieur de ce cadre historico-philosophique qu’il réforme le paradigme bergsonien, qui oppose société close et société ouverte, et approfondit la critique formulée par Georges Canguilhem des mécanismes de régulation et d’autorégulation tant biologiques que politiques. En particulier, sa critique du concept d’« automate » donne forme à un modèle de système social qui peut contribuer à démystifier la conception moderne de la machine, qui hante encore nos représentations du système social, sans se replier sur le mythe ancien – tout à fait complémentaire – du corps politique. En fait, la philosophie de Simondon autorise l’esquisse d’un modèle de système social qui, répondant à la formule paradoxale de Canguilhem selon laquelle la société est «machine autant que vie», pourrait se définir comme étant une société à finalité émergente
La comunità possibile: dinamiche del sociale e identità collettiva in Bataille, Lacan e Simondon
No full textQuantum fluctuations in atomic Josephson junctions: the role of dimensionality
No full textWe investigate the role of quantum fluctuations in the dynamics of a bosonic
Josephson junction in spatial dimensions, by using beyond mean-field
Gaussian corrections. We derive some key dynamical properties in a systematic
way for . In particular, we compute the Josephson frequency in the
regime of low population imbalance. We also obtain the critical strength of the
macroscopic quantum self-trapping. Our results show that quantum corrections
increase the Josephson frequency in spatial dimensions and , but
they decrease it in the case. The critical strength of macroscopic
quantum self-trapping is instead reduced by quantum fluctuations in and
cases, while it is enhanced in the configuration. We show that the
difference between the cases of D = 2 and D = 3 on one side, and D = 1 on the
other, can be related to the qualitatively different dependence of the
interaction strength on the scattering length in the different dimensions.Comment: 25 pages, 9 figures, 2 table
MeSH term explosion and author rank improve expert recommendations
No full textInformation overload is an often-cited phenomenon that reduces the productivity, efficiency and efficacy of scientists. One challenge for scientists is to find appropriate collaborators in their research. The literature describes various solutions to the problem of expertise location, but most current approaches do not appear to be very suitable for expert recommendations in biomedical research. In this study, we present the development and initial evaluation of a vector space model-based algorithm to calculate researcher similarity using four inputs: 1) MeSH terms of publications; 2) MeSH terms and author rank; 3) exploded MeSH terms; and 4) exploded MeSH terms and author rank. We developed and evaluated the algorithm using a data set of 17,525 authors and their 22,542 papers. On average, our algorithms correctly predicted 2.5 of the top 5/10 coauthors of individual scientists. Exploded MeSH and author rank outperformed all other algorithms in accuracy, followed closely by MeSH and author rank. Our results show that the accuracy of MeSH term-based matching can be enhanced with other metadata such as author rank
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
On-shell approximation for the -wave scattering theory
No full textWe investigate the scattering theory of two particles in a generic D-dimensional space. For the s-wave problem, by adopting an on-shell approximation for the T-matrix equation, we derive analytical formulas which connect the Fourier transform V similar to(k) of the interaction potential to the s-wave phase shift. In this way we obtain explicit expressions of the low-momentum parameters g similar to 0 and g similar to 2 of V similar to(k) = g similar to 0 + g similar to 2k2 + center dot center dot center dot in terms of the s-wave scattering length as and the s-wave effective range rs for D = 3, D = 2, and D = 1. Our results, which are strongly dependent on the spatial dimension D, are a useful benchmark for few-body and many-body calculations. As a specific application, we derive the zero-temperature pressure of a two-dimensional uniform interacting Bose gas with a beyond-mean-field correction which includes both scattering length and effective range
"Closing the R&D Gap, Evaluating the Sources of R&D Spending"
No full textBoth spending and tax policies have been implemented in the United States with the goal of stimulating private sector research and development (R&D). Karier questions whether current R&D policy, especially the research and experimentation tax credit, can contribute to closing the gap between nondefense expenditures on R&D in the United States and such expenditures in other countries, such as Japan and Germany. He also explores possible changes to our current R&D policy to make it more effective.
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