1,720,956 research outputs found
Road Safety at Intersections Controlled by Traffic Lights: IVC and Risk Indexes
No full textThe paper reports the results of safety analyses conceived to assess the effects and benefits which might be generated by the forthcoming use of the infrastructure-to-vehicle (I2V) or vehicle-to-infrastructure (V2I) communication systems at road intersections regulated by traffic lights. Road crossings are often considered as critical areas for the occurrence of accidents, because they increase the likelihood of the event given the confluence of traffic streams from and to different directions. The analyses are aimed at calculating a real-time estimate of some risk indexes of accident, which might be provided on-board when approaching road intersection regulated by traffic lights. This information can then be used by an ADAS for traffic signal approaching. Two typologies of use of the information on the risk indexes can be identified: if data can be detected in real time, the driver could be informed on-board of a potentially hazardous situation using algorithms to predict the trend of the vehicle on the basis of the data detected from the monitoring; another use would be detecting – in case the vehicle were already within the dilemma zone – the lowest risk manoeuvre and sending a message on board to inform the driver
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
A Proposal of Risk Indexes at Signalised Intersections for ADAS Aimed to Road Safety
No full textStatistical data show that road intersections are one of the critical areas for accidents. The analyses reported are aimed at estimate risk indexes, which might be provided on-board, when vehicles approach a road intersection regulated by traffic lights, by an ADAS based on the use of the infrastructure-to-vehicle (I2V) or vehicle-to-infrastructure (V2I) communication systems. Two possible uses of the risk indexes can be identified: if data can be detected in real time, the driver could be informed on-board of a potentially hazardous situation, using algorithms to predict the dynamics of the vehicle on the basis of the data detected from the monitoring; the other use would be detecting – in case the vehicle were already within the dilemma zone – the lowest risk manoeuvre and providing it the driver with a message on board. The paper also reports the effects which might be generated by this ADAS application
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
Ionizing radiation and stress: the analysis of the medical ray technician
No full textThe present study aims to analyzing the relation between the work-related distress with the exposition to ionizing radiations in the radiology technicians, in the hospital environment.
Materials and Methods
Our present study has been conducted on a group of 36 sanitary technicians (14 women and 22 man, with an average age of 48±10,1 years) working in the Hospital Radiology Pavilion; 28 of them were less-exposed to radio-active emissions (B Category) and 8 were more exposed to radio-active emissions (A Category). The HSE questionnaire has been administered to all the 36 sanitary technicians. The data analysis and statistical elaboration were conducted using the HSE Tools. After that, the non-parametric Mann-Whitney test was applied to the comparison of the medians of two independent samples.
Results
The HSE tools questionnaire’s analysis (made on the whole population) made evident some criticalities in the domains of the managerial support and of the professionals’ relationships: in the B Category group (less- exposed to radio-emissions) further criticalities emerged, in the domain of peer-support and in the change domain.
The HSE questionnaire analysis, made adopting the Mann-Whitney non-parametric statistical test, significant statistical differences emerged from 2 questions of the 35 sub-administered questions, regarding the mostly radio-exposed workers.
Conclusions
From the research analysis, the authors deducted the small relevance of the emerged criticalities for the two groups of workers; the researchers also believe that, given the (almost complete) homogeneity of the results emerging from the statistical analysis (done with the Mann Whitney test), the perception of the of the work-related distress risk is irrelevant to the dose of ionizing radio-expositio
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