1,720,962 research outputs found
Don Ignacio Bermudez de Castro, Caballero del Orden de Santiago, del Consejo de su Magestad, Intendente General del Exercito, y Reynos de Castilla, y Leon, &c
No full textLloc i data del text "Zamora 10 de Mayo de 1779"ReclamsSignat per "D. Ignacio Bermudez" , "Thomas Anzano" i "D. Juan Ignacio Moreno""Orden de S.M. por la qual los graves perjucios, que resultan á los Cuerpos de Caballeria en comun, á sus Individuos en particular, á los Pueblos" --Catàleg manual de la Biblioteca Econòmica Carandell.Ordre de S.M. per la qual els greus perjudicis, que resulten als Cossos de Caballeria en comú, als seus Individus en particular, als Pobles (…).
A Distributed Architecture for the Monitoring of Clouds and CDNs: Applications to Amazon AWS
Full text linkClouds and CDNs are systems that tend to separate the content being requested by users from the physical servers capable of serving it. From the network point of view, monitoring and optimizing performance for the traffic they generate are challenging tasks, given that the same resource can be located in multiple places, which can, in turn, change at any time. The first step in understanding cloud and CDN systems is thus the engineering of a monitoring platform. In this paper, we propose a novel solution that combines passive and active measurements and whose workflow has been tailored to specifically characterize the traffic generated by cloud and CDN infrastructures. We validate our platform by performing a longitudinal characterization of the very well known cloud and CDN infrastructure provider Amazon Web Services (AWS). By observing the traffic generated by more than 50 000 Internet users of an Italian Internet Service Provider, we explore the EC2, S3, and CloudFront AWS services, unveiling their infrastructure, the pervasiveness of web services they host, and their traffic allocation policies as seen from our vantage points. Most importantly, we observe their evolution over a two-year-long period. The solution provided in this paper can be of interest for the following: 1) developers aiming at building measurement tools for cloud infrastructure providers; 2) developers interested in failure and anomaly detection systems; and 3) third-party service-level agreement certificators who can design systems to independently monitor performance. Finally, we believe that the results about AWS presented in this paper are interes
Exploring the cloud from passive measurements: The Amazon AWS case
Full text linkThis paper presents a characterization of Amazon's Web Services (AWS), the most prominent cloud provider that offers computing, storage, and content delivery platforms. Leveraging passive measurements, we explore the EC2, S3 and CloudFront AWS services to unveil their infrastructure, the pervasiveness of content they host, and their traffic allocation policies. Measurements reveal that most of the content residing on EC2 and S3 is served by one Amazon datacenter, located in Virginia, which appears to be the worst performing one for Italian users. This causes traffic to take long and expensive paths in the network. Since no automatic migration and load-balancing policies are offered by AWS among different locations, content is exposed to the risks of outages. The CloudFront CDN, on the contrary, shows much better performance thanks to the effective cache selection policy that serves 98% of the traffic from the nearest available cache. CloudFront exhibits also dynamic load-balancing policies, in contrast to the static allocation of instances on EC2 and S3. Information presented in this paper will be useful for developers aiming at entrusting AWS to deploy their contents, and for researchers willing to improve cloud desig
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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