1,575 research outputs found

    Protective encapsulation of implantable biotelemetry units

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    Development of materials for encapsulating electronic devices used in biotelemetry is discussed. Chemical resistance of materials to effects of animal fluids is described. Silicone rubber is recommended as basic material with polymers applied to outer surface for protective coating

    Implementación de un controlador borroso usando técnicas de PWM analógico

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    Hoy día la mayoría de los sistemas de control borroso se implementan en software usando procesadores y micro controladores digitales. Los diseños digitales programables son capaces de resolver muchos problemas de control, pero en sistemas de tiempo real, donde las señales de control tienen que cambiar en solo unos ciclos del reloj, la implementación hardware es la única solución posible. En este artículo se presenta un diseño de VLSI hardware, basado en técnicas de diseño analógicas usando trenes de pulsos. El diseño implementa todas las partes de un controlador borroso de alta velocidad. Se ha construido un chip de prueba en 1.5um CMOS

    Home as a Site of State-Corporate Violence: Grenfell Tower, Aetiologies and Aftermaths

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    Focusing on the aftermaths and consequences of the Grenfell Tower fire, this article reveals the factors which combined to produce a fire that could have such devastating effects. Further, it delineates the discrete ways in which distinct types of harms – physical, emotional and psychological, cultural and relational, and financial and economic – continue to be produced by a combination of State and corporate acts and omissions. Some of these harms are readily apparent, others are opaque and obscured. It concludes by showing how failures to mitigate these factors constitute one manifestation of the more general phenomenon of ‘social murder’

    Improving the design process of VLSI circuits by means of a hardware debugging system: UNSHADES-1 framework

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    Due to the increase in size and complexity of VLSI integrated circuits, new design tools are becoming needed. Telecommunications and Electronic Industry demand designs that integrate intensive digital signal processing blocks and complex control tasks. Rapid Prototyping techniques introduce a new stage into the design flow that overcome the drawbacks of simulation stage and shorten design times. Advanced FPGAs can host the design for its emulation and can run inserted into the final system. The benefits of their use go beyond the simple rapid prototyping approach, and are able to provide additional information and other useful tasks that will be presented in this paper

    HADES-1: A rapid prototyping environment based on advanced FPGA’s

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    Rapid prototyping of large digital systems is becoming supported with the use of new advanced FPGA's. These FPGA's can give more Information than functional simulation and emulation tasks, due to their inner inspection features. This paper presents HADES-l, a new environment for rapid prototyping and hardware debugging. HADES-l is based on one FPGA of the VIRTEX family, exploiting the advanced features of the SelectMap port and a fast link with the host PC

    The social servicescape: A conceptual model

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    Theory of ac electrokinetic behavior of spheroidal cell suspensions with an intrinsic dispersion

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    The dielectric dispersion, dielectrophoretic (DEP) and electrorotational (ER) spectra of spheroidal biological cell suspensions with an intrinsic dispersion in the constituent dielectric constants are investigated. By means of the spectral representation method, we express analytically the characteristic frequencies and dispersion strengths both for the effective dielectric constant and the Clausius-Mossotti factor (CMF). We identify four and six characteristic frequencies for the effective dielectric spectra and CMF respectively, all of them being dependent on the depolarization factor (or the cell shape). The analytical results allow us to examine the effects of the cell shape, the dispersion strength and the intrinsic frequency on the dielectric dispersion, DEP and ER spectra. Furthermore, we include the local-field effects due to the mutual interactions between cells in a dense suspension, and study the dependence of co-field or anti-field dispersion peaks on the volume fractions.Comment: accepted by Phys. Rev.
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