Diálogos metaficcionales e intermediales (II) entre Agustín Fernández Mallo y Enrique Vila-Matas

The essay, dedicated to Darío Villanueva, one of the most important Spanish specialists in literary theory and comparative literature of the 20th century, explores in the first part his contribution to the research on metaliterature and metafiction in the Spanish contemporary novel of the decades of 1980-1990. His works establish the relationships of these concepts with postmodernity theories and with umberto Eco’s thesis in Il nome della rosa, Postille and other relevant essays of the Italian author. In the second part of the text, the aim is to apply these concepts of literary self-consciousness and reflexivity in the novel as a story-telling device in the work of one of the most relevant Spanish young writers of the 21st Century, Agustín Fernandez Mallo’s Nocilla Lab. In this sense, we will focus the ending sequence, written (and designed) in form of a comic book or graphic novel, in which the young author puts himself beside the more recognized Enrique Vila-Matas, as an allegoric and fictional reflection of Pierre Bourdieu’s theories about the literary field.The essay, dedicated to Darío Villanueva, one of the most important Spanish specialists in literary theory and comparative literature of the 20th century, explores in the first part his contribution to the research on metaliterature and metafiction in the Spanish contemporary novel of the decades of 1980-1990. His works establish the relationships of these concepts with postmodernity theories and with umberto Eco’s thesis in Il nome della rosa, Postille and other relevant essays of the Italian author. In the second part of the text, the aim is to apply these concepts of literary self-consciousness and reflexivity in the novel as a story-telling device in the work of one of the most relevant Spanish young writers of the 21st Century, Agustín Fernandez Mallo’s Nocilla Lab. In this sense, we will focus the ending sequence, written (and designed) in form of a comic book or graphic novel, in which the young author puts himself beside the more recognized Enrique Vila-Matas, as an allegoric and fictional reflection of Pierre Bourdieu’s theories about the literary field

Efficient photovoltaic and electroluminescent perovskite devices

Planar diode structures employing hybrid organic-inorganic methylammonium lead iodide perovskites lead to multifunctional devices exhibiting both a high photovoltaic efficiency and good electroluminescence. The electroluminescence strongly improves at higher current density applied using a pulsed driving method

Nestling diet and fledgling production of eurasian kestrels (Falco tinnunculus) in eastern Spain.

We studied 81 Eurasian kestrel (Falco tinnunculus) nests in the Alto Palancia region (Castel16n, eastern Spain) from 1982-87. Fledgling production was recorded in routine visits to the nests, and the diet was determined by pellet analysis. The mean date of laying was 8 May (N -- 24, SD -- 11.5), similar to that of populations breeding further north in Europe. On average, each successful pair produced four fledglings per year (N = 47, SD = 0.7, range = 2-5), and no significant differences in fledging success were found among years. Grasshoppers formed the bulk of the diet during the nestling period. Mammals and birds were scarcely represented. The number of fledglings per successful pair was similar to or higher than that reported from Finland, Germany, and England where voles are the main prey brought to the nestlings. We suggest that a relative abundance of insects, and reduced energy requirements for thermoregulation in Mediterranean areas allow kestrels to successfully feed their young mainly on insects, without reducing fledgling production in relation to populations where voles form the bulk of the nestling diet. Se estudiaron 81 nidos de cernícalo vulgar (Falco tinnunculus) en la comarca del Alto Palancia (Castel16n, Este de España) entre 1982-87. La producci6n de pollos se estudió mediante visitas periódicas a los nidos, y la dieta analizando las egagrópilas recolectadas durante el periodo de permanencia de los pollos en el nido. La fecha media de inicio de la puesta fue el 8 de Mayo (N -- 24, SD -- 11.5), similar a las observadas en otros países de Europa. Cada pareja con éxito produce una media de cuatro pollos por año (N -- 47, SD = 0.7, rango -- 2-5), no habiendo diferencias significativas entre años. Los saltamontes forman la base de la dieta durante el periodo estudiado, estando los mamíferos y las aves escasamente representados. La producción de pollos por pareja con éxito es similar o mayor a las obtenidas en Finlandia, Alemania e Inglaterra, donde los topillos forman la base de la dieta de los pollos. Se sugiere que una mayor disponibilidad de insectos, y una reducción de los requerimientos energéticos de los pollos en las áreas mediterráneas, permiten a los cernícalos alimentar a los pollos con una dieta basada en insectos sin reducir su productividad con respecto a poblaciones donde los mamíferos son la base de la dieta

Fault Modeling of Graphene Nanoribbon FET Logic Circuits

[EN] Due to the increasing defect rates in highly scaled complementary metal-oxide-semiconductor (CMOS) devices, and the emergence of alternative nanotechnology devices, reliability challenges are of growing importance. Understanding and controlling the fault mechanisms associated with new materials and structures for both transistors and interconnection is a key issue in novel nanodevices. The graphene nanoribbon field-effect transistor (GNR FET) has revealed itself as a promising technology to design emerging research logic circuits, because of its outstanding potential speed and power properties. This work presents a study of fault causes, mechanisms, and models at the device level, as well as their impact on logic circuits based on GNR FETs. From a literature review of fault causes and mechanisms, fault propagation was analyzed, and fault models were derived for device and logic circuit levels. This study may be helpful for the prevention of faults in the design process of graphene nanodevices. In addition, it can help in the design and evaluation of defect- and fault-tolerant nanoarchitectures based on graphene circuits. Results are compared with other emerging devices, such as carbon nanotube (CNT) FET and nanowire (NW) FET.This work was supported in part by the Spanish Government under the research project TIN2016-81075-R and by Primeros Proyectos de Investigacion (PAID-06-18), Vicerrectorado de Investigacion, Innovacion y Transferencia de la Universitat Politecnica de Valencia (UPV), under the project 200190032.Gil Tomás, DA.; Gracia-Morán, J.; Saiz-Adalid, L.; Gil, P. (2019). Fault Modeling of Graphene Nanoribbon FET Logic Circuits. Electronics. 8(8):1-18. https://doi.org/10.3390/electronics8080851S11888International Technology Roadmap for Semiconductors (ITRS) 2013http://www.itrs2.net/2013-itrs.htmlSchuegraf, K., Abraham, M. C., Brand, A., Naik, M., & Thakur, R. (2013). Semiconductor Logic Technology Innovation to Achieve Sub-10 nm Manufacturing. IEEE Journal of the Electron Devices Society, 1(3), 66-75. doi:10.1109/jeds.2013.2271582International Technology Roadmap for Semiconductors (ITRS) 2015https://bit.ly/2xiiT8PNovoselov, K. S. (2004). Electric Field Effect in Atomically Thin Carbon Films. Science, 306(5696), 666-669. doi:10.1126/science.1102896Geim, A. K., & Novoselov, K. S. (2007). The rise of graphene. Nature Materials, 6(3), 183-191. doi:10.1038/nmat1849Wu, Y., Farmer, D. B., Xia, F., & Avouris, P. (2013). Graphene Electronics: Materials, Devices, and Circuits. Proceedings of the IEEE, 101(7), 1620-1637. doi:10.1109/jproc.2013.2260311Choudhury, M. R., Youngki Yoon, Jing Guo, & Mohanram, K. (2011). Graphene Nanoribbon FETs: Technology Exploration for Performance and Reliability. IEEE Transactions on Nanotechnology, 10(4), 727-736. doi:10.1109/tnano.2010.2073718Avouris, P. (2010). Graphene: Electronic and Photonic Properties and Devices. Nano Letters, 10(11), 4285-4294. doi:10.1021/nl102824hBanadaki, Y. M., & Srivastava, A. (2015). Scaling Effects on Static Metrics and Switching Attributes of Graphene Nanoribbon FET for Emerging Technology. IEEE Transactions on Emerging Topics in Computing, 3(4), 458-469. doi:10.1109/tetc.2015.2445104Avouris, P., Chen, Z., & Perebeinos, V. (2007). Carbon-based electronics. Nature Nanotechnology, 2(10), 605-615. doi:10.1038/nnano.2007.300Banerjee, S. K., Register, L. F., Tutuc, E., Basu, D., Kim, S., Reddy, D., & MacDonald, A. H. (2010). Graphene for CMOS and Beyond CMOS Applications. Proceedings of the IEEE, 98(12), 2032-2046. doi:10.1109/jproc.2010.2064151Schwierz, F. (2013). Graphene Transistors: Status, Prospects, and Problems. Proceedings of the IEEE, 101(7), 1567-1584. doi:10.1109/jproc.2013.2257633Fregonese, S., Magallo, M., Maneux, C., Happy, H., & Zimmer, T. (2013). Scalable Electrical Compact Modeling for Graphene FET Transistors. IEEE Transactions on Nanotechnology, 12(4), 539-546. doi:10.1109/tnano.2013.2257832Chen, Y.-Y., Sangai, A., Rogachev, A., Gholipour, M., Iannaccone, G., Fiori, G., & Chen, D. (2015). A SPICE-Compatible Model of MOS-Type Graphene Nano-Ribbon Field-Effect Transistors Enabling Gate- and Circuit-Level Delay and Power Analysis Under Process Variation. IEEE Transactions on Nanotechnology, 14(6), 1068-1082. doi:10.1109/tnano.2015.2469647Ferrari, A. C., Bonaccorso, F., Fal’ko, V., Novoselov, K. S., Roche, S., Bøggild, P., … Pugno, N. (2015). Science and technology roadmap for graphene, related two-dimensional crystals, and hybrid systems. Nanoscale, 7(11), 4598-4810. doi:10.1039/c4nr01600aHong, A. J., Song, E. B., Yu, H. S., Allen, M. J., Kim, J., Fowler, J. D., … Wang, K. L. (2011). Graphene Flash Memory. ACS Nano, 5(10), 7812-7817. doi:10.1021/nn201809kJeng, S.-L., Lu, J.-C., & Wang, K. (2007). A Review of Reliability Research on Nanotechnology. IEEE Transactions on Reliability, 56(3), 401-410. doi:10.1109/tr.2007.903188Srinivasu, B., & Sridharan, K. (2017). A Transistor-Level Probabilistic Approach for Reliability Analysis of Arithmetic Circuits With Applications to Emerging Technologies. IEEE Transactions on Reliability, 66(2), 440-457. doi:10.1109/tr.2016.2642168Teixeira Franco, D., Naviner, J.-F., & Naviner, L. (2006). Yield and reliability issues in nanoelectronic technologies. annals of telecommunications - annales des télécommunications, 61(11-12), 1422-1457. doi:10.1007/bf03219903Lin, Y.-M., Jenkins, K. A., Valdes-Garcia, A., Small, J. P., Farmer, D. B., & Avouris, P. (2009). Operation of Graphene Transistors at Gigahertz Frequencies. Nano Letters, 9(1), 422-426. doi:10.1021/nl803316hLiao, L., Lin, Y.-C., Bao, M., Cheng, R., Bai, J., Liu, Y., … Duan, X. (2010). High-speed graphene transistors with a self-aligned nanowire gate. Nature, 467(7313), 305-308. doi:10.1038/nature09405Wang, X., Tabakman, S. M., & Dai, H. (2008). Atomic Layer Deposition of Metal Oxides on Pristine and Functionalized Graphene. Journal of the American Chemical Society, 130(26), 8152-8153. doi:10.1021/ja8023059Geim, A. K. (2009). Graphene: Status and Prospects. Science, 324(5934), 1530-1534. doi:10.1126/science.1158877Mistewicz, K., Nowak, M., Wrzalik, R., Śleziona, J., Wieczorek, J., & Guiseppi-Elie, A. (2016). Ultrasonic processing of SbSI nanowires for their application to gas sensors. Ultrasonics, 69, 67-73. doi:10.1016/j.ultras.2016.04.004Jesionek, M., Nowak, M., Mistewicz, K., Kępińska, M., Stróż, D., Bednarczyk, I., & Paszkiewicz, R. (2018). Sonochemical growth of nanomaterials in carbon nanotube. Ultrasonics, 83, 179-187. doi:10.1016/j.ultras.2017.03.014Chen, X., Seo, D. H., Seo, S., Chung, H., & Wong, H.-S. P. (2012). Graphene Interconnect Lifetime: A Reliability Analysis. IEEE Electron Device Letters, 33(11), 1604-1606. doi:10.1109/led.2012.2211564Wang, Z. F., Zheng, H., Shi, Q. W., & Chen, J. (2009). Emerging nanodevice paradigm. ACM Journal on Emerging Technologies in Computing Systems, 5(1), 1-19. doi:10.1145/1482613.1482616Dong, J., Xiang, G., Xiang-Yang, K., & Jia-Ming, L. (2007). Atomistic Failure Mechanism of Single Wall Carbon Nanotubes with Small Diameters. Chinese Physics Letters, 24(1), 165-168. doi:10.1088/0256-307x/24/1/045Bu, H., Chen, Y., Zou, M., Yi, H., Bi, K., & Ni, Z. (2009). Atomistic simulations of mechanical properties of graphene nanoribbons. Physics Letters A, 373(37), 3359-3362. doi:10.1016/j.physleta.2009.07.04

Improving Error Correction Codes for Multiple-Cell Upsets in Space Applications

© 2018 IEEE. Personal use of this material is permitted. Permissíon from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertisíng or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.[EN] Currently, faults suffered by SRAM memory systems have increased due to the aggressive CMOS integration density. Thus, the probability of occurrence of single-cell upsets (SCUs) or multiple-cell upsets (MCUs) augments. One of the main causes of MCUs in space applications is cosmic radiation. A common solution is the use of error correction codes (ECCs). Nevertheless, when using ECCs in space applications, they must achieve a good balance between error coverage and redundancy, and their encoding/decoding circuits must be efficient in terms of area, power, and delay. Different codes have been proposed to tolerate MCUs. For instance, Matrix codes use Hamming codes and parity checks in a bi-dimensional layout to correct and detect some patterns of MCUs. Recently presented, column¿line¿code (CLC) has been designed to tolerate MCUs in space applications. CLC is a modified Matrix code, based on extended Hamming codes and parity checks. Nevertheless, a common property of these codes is the high redundancy introduced. In this paper, we present a series of new lowredundant ECCs able to correct MCUs with reduced area, power, and delay overheads. Also, these new codes maintain, or even improve, memory error coverage with respect to Matrix and CLC codes.This work was supported by the Spanish Government under the research Project TIN2016-81075-R.Gracia-Morán, J.; Saiz-Adalid, L.; Gil Tomás, DA.; Gil, P. (2018). Improving Error Correction Codes for Multiple-Cell Upsets in Space Applications. IEEE Transactions on Very Large Scale Integration (VLSI) Systems. 26(10):2132-2142. https://doi.org/10.1109/TVLSI.2018.2837220S21322142261

A direct SIF approach for anisotropic materials using the boundary element method.

Recently developments in numerical methods such as the Extended Finite Element Method (X-FEM) and the Extended Boundary Element Method (X-BEM) have significantly improved the accuracy in linear elastic fracture mechanics (LEFM) problems. Nevertheless, the postprocessing involved in the calculation of the Stress Intensity Factors still presents a computational burden. The most usual SIF evaluation techniques are the J-integral or the more general Interaction Integral (M-integral), which may require considerable computational resources of the order of those required to obtain the solution of the LEFMproblem. A direct approach, where the SIFs are revealed in the solution vector, has been developed by [1] for isotropic materials and is further extended to anisotropic materials in this work

Utilización de factores de crecimiento plaquetarios asociados a fosfato pentacálcico en el tratamiento de lesiones óseas paratumorales en la infancia

El tratamiento de las lesiones óseas paratumorales (como el quiste óseo aneurismático y el quiste óseo simple) continúa siendo controvertido. Aunque existen diferentes posibilidades de tratamiento, el porcentaje de fallo en la curación debido a recidivas de estas lesiones no es desdeñable. Los autores presentan su experiencia retrospectiva en 5 casos en diferentes localizaciones anatómicas, tratados mediante curetaje y relleno de la lesión mediante un sustituto óseo (fosfato pentacálcico, fibrina y factores de crecimiento autólogos derivados de plaquetas) con resultados satisfactorios.Treatment of tumorlike lesions of bone (as aneurysmal bone cyst and simple bone cyst) remains controversial. Although there are different possibilities of treatment, the rate of failure to cure due to recurrences of both types of lesions is not negligible. The authors present their retrospective experience in 5 cases in different locations, where such lesions were treated by means of curettage and grafting using a bone substitute (pentacalcium phosphate, fibrine and autologous platelet derived growth factors) with satisfactory results

A direct SIF approach for anisotropic materials using the boundary element method

Recently developments in numerical methods such as the Extended Finite Element Method (X-FEM) and the Extended Boundary Element Method (X-BEM) have significantly improved the accuracy in linear elastic fracture mechanics (LEFM) problems. Nevertheless, the postprocessing involved in the calculation of the Stress Intensity Factors still presents a computational burden. The most usual SIF evaluation techniques are the J-integral or the more general Interaction Integral (M-integral), which may require considerable computational resources of the order of those required to obtain the solution of the LEFMproblem. A direct approach, where the SIFs are revealed in the solution vector, has been developed by [1] for isotropic materials and is further extended to anisotropic materials in this work

An upwind vertex centred Finite Volume solver for Lagrangian solid dynamics

A vertex centred Jameson–Schmidt–Turkel (JST) finite volume algorithm was recently introduced by the authors (Aguirre et al., 2014 [1]) in the context of fast solid isothermal dynamics. The spatial discretisation scheme was constructed upon a Lagrangian two-field mixed (linear momentum and the deformation gradient) formulation presented as a system of conservation laws [2], [3] and [4]. In this paper, the formulation is further enhanced by introducing a novel upwind vertex centred finite volume algorithm with three key novelties. First, a conservation law for the volume map is incorporated into the existing two-field system to extend the range of applications towards the incompressibility limit (Gil et al., 2014 [5]). Second, the use of a linearised Riemann solver and reconstruction limiters is derived for the stabilisation of the scheme together with an efficient edge-based implementation. Third, the treatment of thermo-mechanical processes through a Mie–Grüneisen equation of state is incorporated in the proposed formulation. For completeness, the study of the eigenvalue structure of the resulting system of conservation laws is carried out to demonstrate hyperbolicity and obtain the correct time step bounds for non-isothermal processes. A series of numerical examples are presented in order to assess the robustness of the proposed methodology. The overall scheme shows excellent behaviour in shock and bending dominated nearly incompressible scenarios without spurious pressure oscillations, yielding second order of convergence for both velocities and stresses