103,054 research outputs found
Movement in the Philosophy of Mind: traces of the motor model of mind in the history of science
No full textLetter, [Author unclear] to Paulina T. Merritt
No full textHandwritten letter to Paulina Merritt from an unknown author, October 1, 1876.
An Effective Deterministic Procedure for the Synthesis of Shaped Beams by means of Uniform-Amplitude Linear Sparse Arrays
No full textA rigorous deterministic approach is proposed for the mask-constrained power pattern synthesis of shaped beams through one-dimensional sparse arrays having uniform-amplitude excitations (and variable phases). The approach includes the well known density taper procedure as a special case. The corresponding technique, which exploits an analytical formulation of the problem and convex programming routines, results in fast computation and is able to achieve optimal solutions without recurring to any global optimization. Numerical results assessing the capabilities of the proposed design method are provided, opening the way to the development of an effective approach for the synthesis of circularly symmetric shaped beams via uniformly-excited circular ring arrays
Leggendo impariamo le emozioni.
No full textLe nuove filosofie della mente e le attuali neuroscienze cognitive pongono il corpo al centro dello sviluppo cognitivo, e col corpo le emozioni.
Lo strutturarsi dell'identità passa per le esperienze dell'individuo, esperienze reali ma anche virtuali. Leggendo esperiamo mondi possibili e affiniamo i nostri strumenti necessari a capire noi stessi e gli altri. In questo contesto teorico, un'educazione emotiva appare di vitale importanza per la crescita individuale e della società
Un flâneur telecomandato. Verde di Ruben A. nel dialogo dei modernismi europei
No full textAll’interno del panorama letterario portoghese del ventesimo secolo, tra gli autori «engaged with a persistent investigation of the process of signification» (Drucker 1994), Ruben Alfred Andresen Leitão assume sicuramente una posizione di rilievo. Attraverso una studiata manipolazione linguistica e formale, Ruben A. descrive le preoccupazioni di una generazione in continua ricerca di risposte, ergendosi a testimone di una realtà corrotta e costruita su false verità.
Cores (1960), dedicata agli amici poeti Noémia de Souza e Alexandre O’Neill, riflette a pieno lo spirito modernista portoghese. La raccolta – che non a caso si apre con un’epigrafe tratta da The Music of Poetry (1942) di T. S. Eliot – è costituita da otto racconti, in cui i toni surreali, e a tratti nonsense, si intrecciano agli innumerevoli riferimenti storici, letterari e culturali portoghesi.
Il presente contributo prende in esame l’ultimo racconto della raccolta, Verde, tributo esplicito al poeta Cesário Verde, in cui il protagonista si ritrova a deambulare “telecomandato” dal potere della Torre Teleguiadora per le strade di una Lisbona reale e allo stesso tempo fantascientifica, in compagnia di individui e animali stravaganti, alla ricerca disperata di un “verde” che ormai non esiste più. L’obiettivo sarà quello di osservare come “l’effetto psichico” del colore sul protagonista (Kandinskij 1912), la realtà distopica dell’uomo telecomandato, e i riferimenti espliciti agli scrittori modernisti portoghesi convergano nella raffigurazione dell’immagine allegorica della società portoghese sotto la dittatura
Saddle towers and minimal <i>k</i>-noids in ℍ<sup>2</sup> × ℝ
No full textAbstractGiven k ≥ 2, we construct a (2k − 2)-parameter family of properly embedded minimal surfaces in ℍ2 × ℝ invariant by a vertical translation T, called saddle towers, which have total intrinsic curvature 4π(1 − k), genus zero and 2k vertical Scherk-type ends in the quotient by T. Each of those examples is obtained from the conjugate graph of a Jenkins–Serrin graph over a convex polygonal domain with 2k edges of the same (finite) length. As limits of saddle towers, we obtain properly embedded minimal surfaces, called minimal k-noids, which are symmetric with respect to a horizontal slice (in fact they are vertical bi-graphs) and have total intrinsic curvature 4π(1 − k), genus zero and k vertical planar ends.</jats:p
Optimal Synthesis of Directivity Constrained Pencil Beams by Means of Circularly Symmetric Aperture Fields
No full textOptimal Synthesis of Circularly Symmetric Aperture Sources with Shaped patterns
No full textThe problem of the optimal power pattern synthesis of shaped beams by means of circularly symmetric continuous aperture sources is addressed and solved. In particular, a necessary and sufficient existence criterion is provided to test a priori (i.e., without solving the overall synthesis problem) if a non-superdirective continuous aperture source of given size can radiate or not a circularly symmetric power pattern lying in a given arbitrary mask. In the affirmative case, the proposed approach guarantees the achievement of the global optimum by using local optimization techniques, and a number of equivalent aperture distributions are determined in a straightforward fashion. Numerical examples concerning applications of actual interest support the given theory and confirm the effectiveness of the developed approach
Handwritten biographical information on Paulina T. McClung Merritt
No full textA handwritten biography of Paulina T. McClung Merritt by an unknown author, 1892.
Heterogeneous and tissue-specific regulation of effector T cell responses by IFN-gamma during Plasmodium berghei ANKA infection.
No full textIFN-γ and T cells are both required for the development of experimental cerebral malaria during Plasmodium berghei ANKA infection. Surprisingly, however, the role of IFN-γ in shaping the effector CD4(+) and CD8(+) T cell response during this infection has not been examined in detail. To address this, we have compared the effector T cell responses in wild-type and IFN-γ(-/-) mice during P. berghei ANKA infection. The expansion of splenic CD4(+) and CD8(+) T cells during P. berghei ANKA infection was unaffected by the absence of IFN-γ, but the contraction phase of the T cell response was significantly attenuated. Splenic T cell activation and effector function were essentially normal in IFN-γ(-/-) mice; however, the migration to, and accumulation of, effector CD4(+) and CD8(+) T cells in the lung, liver, and brain was altered in IFN-γ(-/-) mice. Interestingly, activation and accumulation of T cells in various nonlymphoid organs was differently affected by lack of IFN-γ, suggesting that IFN-γ influences T cell effector function to varying levels in different anatomical locations. Importantly, control of splenic T cell numbers during P. berghei ANKA infection depended on active IFN-γ-dependent environmental signals--leading to T cell apoptosis--rather than upon intrinsic alterations in T cell programming. To our knowledge, this is the first study to fully investigate the role of IFN-γ in modulating T cell function during P. berghei ANKA infection and reveals that IFN-γ is required for efficient contraction of the pool of activated T cells
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