A Programmable Processor with 4096 Processing Units for Media Applications

Over the past few years, technology drivers for processor designs have changed significantly. Media data delivery and processing -- such as telecommunications, networking, video processing, speech recognition and 3D graphics -- is increasing in importance and will soon dominate the processing cycles consumed in computer-based systems. This paper describes a processo, called Linedancer, that provides high media performance with low energy consumption by integrating associative SIMD parallel processing with embedded microprocessor technology. The major innovations in the Linedancer is the integration of thousands of processing units in a single chip that are capable to support software programmable high-performance mathematical functions as well as abstract data processing. In addition to 4096 processing units, Linedancer integrates on a single chip a RISC controller that is an implementation of the SPARC architecture, 128 Kbytes of Data Memory, and I/O interfaces. The SIMD processing in Linedancer implements the ASProCore architecture, which is a proprietary implementation of SIMD processing, operates at 266 MHz with program instructions issued by the RISC controller. The device also integrates a 64-bit synchronous main memory interface operating at 133 MHZ (double-data rate, DDR), and a 64-bit 66 MHz PCI interface

Room Temperature Hydrogen Production from Ethanol over CeNiXHZOY Nano-Oxyhydride Catalysts

ENERGIE:MATERIAUX+HJOCeNiXHZOY nano-oxyhydride catalysts were developed for the highly efficient sustainable hydrogen production from ethanol and water in the oxidative steam reforming reaction. After an insitu treatment in hydrogen in the temperature range of 200-300 degrees C, the cerium-nickel binary mixed oxides became hydrogen reservoirs, which were called oxyhydrides, in the presence of hydrogen species of the hydride nature in the anionic vacancies of mixed oxides. A novel technology was developed for the room temperature hydrogen production by using the chemical energy released from the reaction between CeNiXHZOY nano-oxyhydride catalysts and oxygen, which completely converted ethanol specifically at 60 degrees C (oven temperature) and simultaneously produced hydrogen, carbon dioxide, and carbon monoxide along with small amounts of methane and ethanal. CeNiXHZOY nano-oxyhydride catalysts demonstrated excellent catalytic stability, which was attributed to the graphitic filamentous carbon formed during the reaction. The unique activation phenomenon of the reaction (a huge variation in the temperature between the catalyst bed and the oven) was demonstrated in detail. Finally, the correlations among the catalyst properties, the catalytic performances, and the characterizations were thoroughly discussed

Advanced functionalized Mg2AlNixHzOy nano-oxyhydrides ex-hydrotalcites for hydrogen production from oxidative steam reforming of ethanol

SSCI-VIDE+ATARI:CDFA+WFA:HJOInternational audienceFor a sustainable society, it is highly desirable to produce H-2 from renewable sources and with low energy consumption. Functional, cheap and easy-prepared Mg2AlNixHzOy nano-oxyhydrides materials were successfully developed from Mg2AlNixOy nano-composites exhydrotalcites. After an in situ treatment in H-2 at low temperature (450 degrees C), the Mg2AlNixHzOy nano-composites (x > 1) become hydrogen reservoirs, called oxyhydrides, with the presence of hydrogen species of hydride nature that can be stored in the anionic vacancies of the solid. Advanced techniques in presence of H-2 including TPR, in situ XRD and INS were used to study the nano-composites with different Ni contents. The Mg2AlNixHzOy nano-oxyhydrides (x > 1) are shown to be able to simultaneously provide hydride species and to totally convert ethanol and produce H-2 from a water-ethanol mixture in presence of O-2, with very low energy input. In complement to the exothermic partial oxidation reaction, the chemical energy delivered from the strong exothermic reaction between hydride species and O-2 is used. The reaction is sustainable because hydride species are replaced and provided by ethanol. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved

La question de l'environnement : naissance d'un débat en Pologne

Photograph taken by Salt Lake Tribune staf

The small projects fund and social capital formation in the Polish-German border Region: an initial appraisal

This paper examines the small projects fund, a European Union-funded initiative to promote good citizen relations across borders. This paper presents this fund as an attempt to foster ‘social capital’ in the Polish–German border region. The fund is examined in light of seven conditions of social capital formation. In the Polish–German border region, the fund scores well on the first four conditions, related to the promotion of individual trust. It performs less well on the three conditions for scaling up individual trust to form social capital. However, it remains to be seen whether small project support can deliver improved citizen relations

Study of Catalytic Sites on Ruthenium For Hydrogenation of N-ethylcarbazole: Implications of Hydrogen Storage via Reversible Catalytic Hydrogenation

Hydrogen storage is a significant challenge for the development and viability of hydrogen-powered vehicles. Storage of molecular hydrogen in nitrogen-substituted polyunsaturated aromatic organic molecules through reversible catalytic hydrogenation and dehydrogenation is a promising approach. The success of developing a catalytic hydrogen storage concept is highly dependent on finding an efficient catalyst; however, understanding how molecules interact with metal catalytic sites is, at present, rather limited. In this work, a combined experimental and theoretical study is conducted to identify efficient catalytic sites on metallic surfaces and to understand the reaction mechanism for the forward hydrogenation reaction. It is clearly revealed from experimentation that hydrogenation of N-ethylcarbazole, a typical nitrogen-substituted polyunsaturated aromatic organic molecule, is taking place in a stepwise manner over metal catalysts. Because of steric constraints at terrace sites, the kinetically stable pyrrole intermediate, formed by partial hydrogenation of N-ethylcarbazole, cannot be readsorbed once desorbed into solution. Therefore further hydrogenation occurs at the low coordinated sites where no similar steric hindrance is encountered. Thus, the mechanism for hydrogenation involves an unusual shuttling of partially hydrogenated intermediates from terrace sites to higher indexed sites via solution. First-principles calculations confirm that the pyrrole intermediate can strongly adsorb to various low coordination sites, typically steps on the vicinal (109) surface, while the adsorption is extremely weak on flat (001) terraces. This work is the first example of catalytic site analysis to account for observed activity, selectivity and recyclability of a typical metal catalyst for catalytic hydrogen storage, which could lead to rational design of superior materials. © 2010 American Chemical Society