1,736 research outputs found
Neuro-fuzzy chip to handle complex tasks with analog performance
This paper presents a mixed-signal neuro-fuzzy controller chip which, in terms of power consumption, input–output delay, and precision, performs as a fully analog implementation.
However, it has much larger complexity than its purely analog counterparts. This combination of performance and complexity is achieved through the use of a mixed-signal architecture consisting
of a programmable analog core of reduced complexity, and a strategy, and the associated mixed-signal circuitry, to cover the whole input space through the dynamic programming of this core.
Since errors and delays are proportional to the reduced number of fuzzy rules included in the analog core, they are much smaller than in the case where the whole rule set is implemented by analog circuitry. Also, the area and the power consumption of the new architecture
are smaller than those of its purely analog counterparts simply because most rules are implemented through programming.
The Paper presents a set of building blocks associated to this architecture, and gives results for an exemplary prototype.
This prototype, called multiplexing fuzzy controller (MFCON), has been realized in a CMOS 0.7 um standard technology. It has
two inputs, implements 64 rules, and features 500 ns of input to output delay with 16-mW of power consumption. Results from the chip in a control application with a dc motor are also provided
Single-atom control of the optoelectronic response in sub-nanometric cavities
By means of ab-initio time dependent density functional theory calculations
carried out on an prototypical hybrid plasmonic device (two metallic
nanoparticles bridged by a one-atom junction), we demonstrate the strong
interplay between photoinduced excitation of localized surface plasmons and
electron transport through the single atom. Such an interplay is remarkably
sensitive to the atomic orbitals of the junction. Therefore, we show the
possibility of a twofold tuning (plasmonic response and photoinduced current
across the juntion) just by changing a single atom in the device.Comment: 5 pages, 5 figure
A Modular Programmable CMOS Analog Fuzzy Controller Chip
We present a highly modular fuzzy inference analog CMOS chip architecture with on-chip digital programmability. This chip consists of the interconnection of parameterized instances of two different kind of blocks, namely label blocks and rule blocks. The architecture realizes a lattice partition of the universe of discourse, which at the hardware level means that the fuzzy labels associated to every input (realized by the label blocks) are shared among the rule blocks. This reduces the area and power consumption and is the key point for chip modularity. The proposed architecture is demonstrated through a 16-rule two input CMOS 1-μm prototype which features an operation speed of 2.5 Mflips (2.5×10^6 fuzzy inferences per second) with 8.6 mW power consumption. Core area occupation of this prototype is of only 1.6 mm 2 including the digital control and memory circuitry used for programmability. Because of the architecture modularity the number of inputs and rules can be increased with any hardly design effort.This work was
supported in part by the Spanish C.I.C.Y.T under Contract TIC96-1392-C02-
02 (SIVA)
Anderson localization in carbon nanotubes: defect density and temperature effects
The role of irradiation induced defects and temperature in the conducting
properties of single-walled (10,10) carbon nanotubes has been analyzed by means
of a first-principles approach. We find that di-vacancies modify strongly the
energy dependence of the differential conductance, reducing also the number of
contributing channels from two (ideal) to one. A small number of di-vacancies
(5-9) brings up strong Anderson localization effects and a seemly universal
curve for the resistance as a function of the number of defects. It is also
shown that low temperatures, around 15-65 K, are enough to smooth out the
fluctuations of the conductance without destroying the exponential dependence
of the resistivity as a function of the tube length.Comment: 4 pages, 4 figure
Real Decreto 682/2014, de 1 de agosto, por el que se modifica el Real Decreto 191/2011, de 18 de febrero, sobre registro general sanitario de empresas alimentarias y alimentos
Real Decreto 682/2014, de 1 de agosto, por el que se modifica el Real Decreto 191/2011, de 18 de febrero, sobre registro general sanitario de empresas alimentarias y alimentos, y otros cuatro reglamentos sobre esta materia. «BOE» núm. 208, de 27 de agosto de 2014, páginas 68459 a 68465
Los nuevos reglamentos de la Unión Europea sobre productos sanitarios
Comentario a la Resolución de 16 de marzo de 2017 de la Sección Tercera del Jurado de AUTOCONTROL sobre la prohibición de incluir en la publicidad de los productos alimenticios “la referencia a su uso en centros sanitarios o a su distribución a través de oficinas de farmacia”.
Requisitos específicos de composición e información aplicables a los preparados para lactantes y preparados de continuación, así como a los requisitos de información sobre los alimentos destinados a los lactantes y niños de corta edad
Este trabajo analiza el Reglamento Delegado (UE) 2016/127 de la Comisión, de 25 de septiembre de 2015, que complementa el Reglamento (UE) nº 609/2013 del Parlamento Europeo y del Consejo en lo que respecta a los requisitos específicos de composición e información aplicables a los preparados para lactantes y preparados de continuación, así como a los requisitos de información sobre los alimentos destinados a los lactantes y niños de corta edad
Logotipo común para identificar a las personas que ofrecen al público medicamentos por venta a distancia
Reglamento de Ejecución (UE) nº 699/2014 de la Comisión, de 24 de junio de 2014, sobre el diseño del logotipo común para identificar a las personas que ofrecen al público medicamentos por venta a distancia y los criterios técnicos, electrónicos y criptográficos a efectos de la verificación de la autenticidad de dicho logotipo
Las prácticas comerciales desleales en la Ley 3/2014, por la que se modifica el Texto Refundido de la Ley General para la Defensa de los Consumidores y Usuarios
El presente trabajo analiza las reformas introducidas por la Ley 3/2014 en la regulación de las prácticas comerciales desleales
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