1,720,999 research outputs found
A high-performance multiported L2 memory IP for scalable three-dimensional integration2013 IEEE International 3D Systems Integration Conference (3DIC)
No full textL2 memory, serving multiple clusters of tightly coupled processors, is well-suited for 3D integration, given its large required size and tolerance to latency and variations in memory access time. In this paper, we focus on the design of a synthesizable L2 memory IP component, which can be attached to a cluster-based multi-core platform through its NoC ports, and offer high-bandwidth memory access with low average latency. We propose a scalable 3D nonuniform memory access (NUMA) architecture, based on low latency logarithmic interconnects, which allows stacking of multiple memory layers with identical dies, supports multiple outstanding transactions, and achieves high clock frequencies due to its highly pipelined nature. Benchmark simulation results demonstrate that addition of 3D-NUMA to a multi-core NoC can result in an average performance boost of 34%. Physical synthesis results show that 3D-NUMA memory system can operate at 500 MHz in STMicroelec-tronics CMOS-28nm Low Power Technology (bounded by memory cut access time, while its logic components can operate up to 1 GHz), up to 8 layers (4 MB) with a memory density loss of only 16%
A shared-FPU architecture for ultra-low power MPSoCs, Proceedings of the ACM International Conference on Computing Frontiers - CF '13
No full textIn this work we propose a shared floating point unit (FPU) architecture for ultra low power (ULP) system on chips operating at near threshold voltage (NTV). Since high-performance FP units (FPUs) are large and complex, but their utilization is relatively low, adding one FPU per each core in a ULP multicore is costly and power hungry. In our approach, we share a few FPUs among all the cores in the system. This increases the utilization of FPUs leading to an energy-efficient design. As a part of our approach, we propose two different FPU allocation techniques: optimal and random. Experimental results demonstrate that compared to a traditional private-FPU approach, our technique in a multicore system with 8 processors and 2 shared FPUs can increase the performance/(area*power) by 5× for applications with 10% FP operations and by 2.5× for applications with 25% FP operation
3D logarithmic interconnect: Stacking multiple L1 memory dies over multi-core clusters2013 Seventh IEEE/ACM International Symposium on Networks-on-Chip (NoCS)
No full textIn this paper we propose two synthesizable 3D network architectures: C-LIN and D-LIN, which allow modular stacking of multiple L1 memory dies over a multi-core cluster with a limited number of processing elements (PEs). Two Through Silicon Via (TSV) technologies are used: the state of the art Micro-bumps and the promising and dense Cu-Cu Direct Bonding, with consideration of the ESD protection circuits. Our results demonstrate that, in processor-to-L1-memory context, CLIN and D-LIN perform significantly better than traditional network on chips and simple time-division multiplexing buses, and they achieve comparable speed vs. their 2D counterparts, while enabling modularity: from 256KB to 2MB L1 memory configurations with a single mask set
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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