1,720,974 research outputs found
Functional optimisation of porous pavements and porous fiction courses
No full textThe Polytechnic University of Bari is involved since some years in an
international research regarding the functional optimisation of porous friction
courses and porous pavements in general. After years of research, a design method
was developed concerning the water draining capacity of such pavements so to
decrease accident risks while driving in wet conditions. Currently, the research is
focused in the optimisation of the fuctional properties of such pavements as regard
the enviromental aspects. This is in collaboration with the University of Florida at
Gainesville , the ANAS Spa (Apulia Department) and Bari Municipality. A test site
was built on a ANAS road in th District of Foggia (I) and another one is being built
up in Bari. This research has also a branch regarding material that is carried in
collaboration with the Technical University of Warsaw
Evaluating skidding risk of a road layout for all types of vehicles
No full textThis paper represents an update to earlier research by the authors on a new method for analyzing the friction of road vehicles. With the third criterion of Lamm as a starting point, the new concept of "friction capital" was introduced in previous work as the performance limit of the road in terms of friction. This method was named the friction diagram method; its output is the friction diagram, which represents the percentage of friction capital that a vehicle uses traveling on a given road. During the design step, the friction diagram could be used to quantify the risk of skidding related to a given road layout. In this paper, the authors investigate the influence of vehicle type on the friction diagram, because it was observed that the type of vehicle used in analyzing a road segment affects the values of friction capital when the boundary conditions and the road geometry change. This finding led the authors to identify the vehicle to be used in detecting skidding risk. This vehicle has been named the "design critical vehicle." Use of the design critical vehicle enables faster detection of the road sections with high skidding risk by using a single friction diagram and avoiding the need to perform the same analysis for various vehicles. Determining the design critical vehicle could be useful in the application of the friction diagram method both in designing roads and in checking existing roads
Evaluating Skidding Risk of a Road Layout for All Types of Vehicles
No full textThis paper represents an updating of research previously begun by the authors concerning a new method to analyze the problem of friction of road vehicles. Starting from the 3rd criterion of Lamm, the new concept of “Friction Capital” was introduced in previous work, as the limit performance of the road in terms of friction. This method has been named Friction Diagram Method; its output is the Friction Diagram that represents the percentage of “Friction Capital” that a vehicle is using traveling on a given road. This percentage is defined as FUSED. During the design step, the Friction Diagram could be used in order to quantify the risk of skidding related to a given road layout. In this paper, the authors investigate the influence of the vehicle type on the Friction Diagram, since it was observed that the type of vehicle used in analyzing a road segment makes the values of FUSED change when the boundary conditions and the road geometry change. This aspect led the authors to identify the vehicle to be used in the skidding risk detection. This vehicle has been named as the “Design Critical Vehicle”(DCV). It allows faster detection of the road sections with high skidding risk using a single Friction Diagram and avoiding the need to perform the same analysis for various vehicle. The DCV identification could be useful in the application of the Friction Diagram Method both in road design and in checking of existing roads
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
- …
