1,721,374 research outputs found
Augmenting Best-Effort Traffic Transmission Performance by Optimizing Resource Allocation Policies
No full text
Evidence on the Link between Respiratory Syncytial Virus Infection in Early Life and Chronic Obstructive Lung Diseases
No full textThere is growing evidence in medical literature to support an association between early-life respiratory syncytial virus lower respiratory tract-lower respiratory tract infection (RSV-LRTI) and recurrent wheezing/asthma-like symptoms. It has been estimated that children with a history of RSV-LRTI have a 2- to 12-fold higher risk of developing asthma. The connection between RSV infection and a developmental trajectory of reduced lung function remains throughout adolescence and early adulthood, suggesting a possible role for RSV even in the inception of chronic obstructive pulmonary disease. That is why the postnatal period appears to offer a specific window of opportunity for early intervention to prevent chronic obstructive lung diseases. The mechanisms by which RSV contributes to the onset of wheezing/asthma and lung function impairment are not fully understood but appear to relate to injury caused directly by the virus and/or to pre-existing predisposing factors. While awaiting a deeper understanding of the association between RSV and chronic lung diseases, the crucial role of pediatricians and physicians is to develop strategies to prevent RSV infections to try and protect children's lifelong respiratory health. Key Points Several evidence suggest a link between RSV infection in early life and wheezing/asthma development. RSV infection appears to have long term respiratory effects. The prevention of RSV infections could reduce the incidence of chronic obstructive respiratory diseases
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
Un servizio di elaborazione di vettorcardiogrammi ed elettrocardiogrammi dedicato alla ricerca clinica
No full text
Workload Models of VBR Video Traffic and their Use in Resource Allocation Policies
Full text linkThe load generated by new types of communications services related to
multimedia and video transmission is becoming one of the major sources of traffic in WAN
networks. Modeling this type of load is a prerequisite for any performance study. In this
paper, we approach the load-characterization problem from a global point of view by
analyzing a set of 20 video streams. We developed resource-, subject-, and scene-oriented
characterizations of coded video streams
Editorial: Smart Objects and Technologies
No full textThe journal Mobile Networks and Applications reflects the emerging symbiosis of portable computers and wireless networks, addressing the convergence of mobility, computing and information organization, access and management. In its special issues, the journal places an equal emphasis on various areas of nomadic computing, data management, related software and hardware technologies, and mobile user services, alongside more ‘classical’ topics in wireless and mobile networking. The journal documents practical and theoretical results which make a fundamental contribution
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
- …
