1,721,065 research outputs found
Energy-efficient sleeping modes for next-generation core networks
No full textThe increased number of devices and links in today's backbones networks of Telecom, in order to maintain quality of service during busy or rush hour loads, has become in a critical factor for the power consumption in communication networks. Unfortunately, current network devices do not have power management primitives, and the energy consumption is largely independent of the load through the devices. Considering these points, we propose a viable approach to introduce and to support standby primitives in backbone network elements, which can be effectively used to almost halve the energy requirements of the whole Telecom core network. Periodic reconfiguration of nodes and links to meet incoming traffic volumes and operational constraints of real-world networks, such as reliability, stability, quality of service, and re-convergence times, is the main idea of the approach that we propose, exploring the main features of backbone device architectures, as well as the network protocol stack. © 2011 IIMC
Introducing standby capabilities into next-generation network devices
Full text linkIn this contribution, our main objective is to introduce and to support standby modes in next-generation devices for backbone networks. Our main idea consists of periodically reconfiguring nodes and links to meet incoming traffic volumes and operational constraints of real-world networks, such as reliability, stability, quality of service, and re-convergence times. To this purpose, the approach is mainly founded on two features already and largely present in today's networks and devices: the network resource virtualization and the modular architecture of nodes. By means of a Linux SW router prototype, we demonstrated that the proposed approach allows dynamically sleeping pieces of hardware in several network nodes, while maintaining good network performance levels, and without causing undesired network instabilities. © 2010 ACM
An Exploratory Analysis of the Novelty of a News Web Site
No full textThe growing amount of information published on the
Web, combined with its dynamic nature, opens many
challenging issues dealing with management and retrieval
of the information and provisioning of the underlying infrastructures.
Search engines have to meet two conflicting
requirements: minimize the number of downloads and provide
up-to-date information. In this paper, we present the
results of an exploratory analysis aimed at investigating
the novelty of the content of a news Web site. We analyzed
the Web site from an horizontal perspective by focusing on
the content of the individual articles and from a vertical
perspective by focusing on the entire collection of articles
published on the site. These two perspectives allowed us
to study how fast and to what extent articles were modified
and to model the evolution of the Web site
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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