1,720,983 research outputs found
CORCHIA, L., MÜLLER-DOOHM, S. und OUTHWAITE, W. (Hg.). Habermas global. Wirkungsgeschichte eines Werks. Berlin: Suhrkamp, 2019, 894 pp.
Full text linkReseña de:
CORCHIA, L., MÜLLER-DOOHM, S. und OUTHWAITE, W. (Hg.). Habermas global. Wirkungsgeschichte eines Werks. Berlin: Suhrkamp, 2019
CORCHIA, L., MÜLLER-DOOHM, S. und OUTHWAITE, W. (Hg.). Habermas global. Wirkungsgeschichte eines Werks. Berlin: Suhrkamp, 2019, 894 pp.
Full text linkReview: L. Corchia, S. Müller-Doohm und W. Outhwaite (eds.), Habermas global. Wirkungsgeschichte eines Werks, Berlin: Suhrkamp, 2019, 894pp. Reseña de:
CORCHIA, L., MÜLLER-DOOHM, S. und OUTHWAITE, W. (Hg.). Habermas global. Wirkungsgeschichte eines Werks. Berlin: Suhrkamp, 2019
Textile Chipless Tag based on Frequency Shift Coding Technique
No full textIn this paper a fully-textile RFID chipless tag based on the frequency shift coding technique is presented. The proposed tag consists of a 50 Ω microstrip line loaded by a hairpin resonator. To achieve a compact size, the resonator is slotted on the ground plane of the microstrip line. By using a single hairpin resonator, a 3-bit tag is obtained. In particular, by selectively cutting the fingers of the hairpin resonator, a frequency shift of its resonance is achieved. In order to facilitate the integration of the proposed device in clothes, textile materials have been used for both the substrate and the conductive parts. Numerical and experimental data demonstrate that the proposed device can be exploited as a simple tag or as a touch sensor
Pacemaker Recharge Through Inductive Resonant Wireless Power Transfer
No full textThis paper presents an inductive resonant wireless power transfer link (WPT) which has been optimized for recharging a pulse generator implanted in the chest. The proposed link consists of two capacitively loaded circular loops and appropriate matching networks. The proposed design approach exhibits improved performance with respect to possible misalignments between the transmitting and the receiving loops. From numerical data, the proposed link has an efficiency of about 67 % when the two resonators are aligned and it remains almost stable for a lateral misalignment lower than 4 mm
Wearable Antennas: Nontextile Versus Fully Textile Solutions
No full textThis article provides a few practical guidelines for designing wearable antennas. A crucial requirement for this kind of antenna is to be noninvasive and “invisible” to the final user. To this end, an application-centered approach is required for both the design and the fabrication process, which leads to high cost, thereby limiting the large-scale production of wearable antennas. Accordingly, this article pays particular attention to low-cost and time-saving fabrication techniques that distinguish between nontextile and fully textile antennas.
Recent works that propose new fabrication techniques for realizing wearable antennas are also included in this article.
Additionally, for each of the analyzed fabrication and design techniques, the suitable operational frequencies are also discussed
Dry Textile Electrodes for Wearable Bio-Impedance Analyzers
No full textIn this paper the results of the study performed on dry textile electrodes for bio-impedance measurements are reported. The use of two different conductive fabrics is investigated: a silver-plated bi-elastic knitted fabric and a bi-layer structure comprising a layer of a silver-plated knitted fabric and a layer of conductive silicone. In this latter, the presence of the silicone layer guarantees a good contact with the skin, which is a fundamental condition for accurate bio-impedance measurements, and preserves the silver by oxidation due to sweat. The fabricated textile electrodes have been sewn on elastic cuffs and two different relative positions of the current and voltage electrodes have been investigated. The proposed cuffs are suitable to be embedded into a t-shirt for continuous and real-time bio-impedance measurements. The reliability of the developed prototypes is validated by comparison with data obtained from Ag/AgCl commercial electrodes. Promising results have been obtained for both the investigated conductive fabrics
Mémifier la politique. Genre, stéréotypes et détournement
No full textDans Mémifier la politique. Genre, stéréotypes et détournement, l’ouvrage explore un phénomène émergent de la communication publique : les mèmes. Ces artefacts numériques, conçus pour la viralité et la visibilité dans les espaces numériques, ne peuvent plus être réduits à de simples expressions frivoles en marge des discussions politiques. Ils doivent être compris comme des pratiques quotidiennes par lesquelles les citoyens s’engagent politiquement et redéfinissent les cadres de l’idéologie dominante.
En tant qu’artefacts politico-culturels divertissants, les mèmes génèrent des significations collectives et partagées, se propageant « de cerveau en cerveau ». Ils participent ainsi à un processus de "mémification" de la sphère publique, caractérisé par deux dynamiques principales : d’un côté, l’offre de nouvelles opportunités de participation et de mobilisation ; de l’autre, une imprégnation de l’idéologie dominante.
Cette contribution analyse deux dimensions critiques : (1) les problèmes liés aux mécanismes de stéréotypage de genre face aux opportunités de polyvocalité et d’élargissement de la participation ; (2) les processus de recadrage et de détournement visant à subvertir les cadres stéréotypés à travers le langage fluide de l’anti-idéologie. Ces deux aspects sont explorés et illustrés par une étude de cas récente en Italie
Low-cost chipless sensor tags for wearable user interfaces
No full textThis paper addresses the design, the fabrication, and the experimental characterization of two fully-textile chipless tags used, for the first time, as wearable touch sensors. The first device is a multi-resonator chipless tag, wherein the information encoding relies on the presence/absence of resonance peaks. The second device consists of a hairpin resonator slotted on the ground plane and acting as a loading impedance of a microstrip line; in this case, the encoding mechanism is based on the variation of the resonance frequency. Prototypes for both devices were fabricated and characterized. Experimental tests performed on the prototypes exploiting two different measurement setups demonstrate that, when used as touch sensors, both the devices are able to encode four configurations corresponding to distinct relative positions between the sensor and the hand. The proposed devices are fully-textile solutions suitable for wearable applications in which low cost and a seamless integration with garments take priority over accuracy
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