1,721,033 research outputs found
Augmented reality technology selection based on integrated QFD-AHP model
Full text linkIn the last decade, Augmented Reality has become increasingly popular. As improved performances are gathered in terms of mature hardware and software tools, we are observing the stemming of a huge number of applications of this technology both in the entertainment and in the industrial domains. On the one hand, such applications are usually claimed to bring benefits in terms of productivity or enhancement of the human’s capability to perform tasks. On the other hand, researchers and developers seem not to adequately consider the different meanings that AR assumes when implemented through visualization devices that can differ significantly in nature and in their capability to provide a mixed real-virtual scenario. In this paper, we describe a user-centred method based on an integrated QFD-AHP approach to select the best visualization display technology with regard to a specific application context. The aim is to establish a repeatable and documented process for the identification of the technology that best suits and mitigates the acceptability risks of the transition from a legacy working environment to an AR based operational environment. The method has been developed in the framework of the RETINA (Resilient Synthetic Vision for Advanced Control Tower Air Navigation Service Provision) project involving the end users, in this case, air traffic controllers. Nevertheless, it can be generalised and applied to other contexts of use. Furthermore, in order to be resilient to the fast, technological development in AR, it can be used to update the results as improvements arise in the performance level of the display devices in a specific technology
Design for comfort: Aircraft interiors design assessment through a human centered response model approach
Full text linkIn a highly competitive global aviation environment, European regional aircraft requires continuous improvements in cabin comfort. This paper describes the design for comfort process proposed in an industrial research project, aimed at the definition of innovative design approaches to measure the affective impact on a potential user when living in and interacting with the cabin. The study is performed in the framework of CASTLE (CAbin Systems design Toward passenger welLbEing). CASTLE is a project granted under the Horizon 2020 EU's research programme in the framework of the Clean Sky 2 initiative. Requirements and recommendations for the comfort aspects to be taken into account to develop a regional aircraft's cabin were provided by Leonardo's Aircraft Division. The methodological approach is set up in a Virtual / Augmented Reality Environment for the definition of a Human Centered Response Model for the design for comfort of regional aircraft interiors. In this context, special attention has been paid to the improvements that can be brought to the cabin interiors, and specifically to the experience that passengers can live in the aircraft of the future. The main objective of the project is to conceive, develop, prototype and test cabin interiors solutions following a HCD (Human Centered Design) methodology. The paper analyzes the approach toward the definition of the design for comfort according to the considered cabin items and design requirements. The proper comfort metrics are selected and linked to an experimental protocol analysis for their assessment. A Virtual Reality environment has been set up to support the comfort assessment in aircraft cabin interiors, from their preliminary design
Evaluation of augmented reality tools for the provision of tower air traffic control using an ecological interface design
Full text linkOne of the major problems faced by the growth of air traffic in the last decade is the limited capacity of the runway especially during low visibility procedures (LVP) due to fog and bad weather. To solve this issue, the project “Resilient Synthetic Vision for Advanced Control Tower Air Navigation Service Provision” (RETINA) project, a two-years exploratory research project, under SESAR2020 program, proposes to use new Synthetic Vision (SV) and Augmented Reality (AR) technologies for the tower controllers to allow them to conduct safe operations under any Meteorological Conditions while maintaining a high runway throughput, equal to good visibility. In this paper we introduce the Ecological Interface Design (EID) as a methodology to investigate the potential and applicability of SV tools and Virtual/Augmented Reality (V/AR) display techniques for the Air Traffic Control (ATC) service provision by the airport control tower. We explain how the EID framework can be used in RETINA, we experiment the framework on a suitable airport and we provide the EID results comparing normal and LVP conditions with operations using RETINA technologies
EX CAVA SPES, DENTRO E FUORI LA VENA DEL GESSO
Full text linkNelle gallerie della ex cava SPES (Borgo Tossignano) sono visibili i primi due strati che non affiorano nella Vena del
Gesso romagnola. Il primo strato è costituito da cristalli giganti di selenite e il secondo da carbonato laminato contenente coni di nucleazione con grandi cristalli di gesso. Alla base del terzo strato è presente un grande mammellone di dimensioni appena inferiori a quello della Grotta di Onferno nei Gessi della Romagna orientale.In the tunnels of the former SPES quarry (Municipality of Borgo Tossignano, Bologna Province, Northern Italy), the first two
layers that do not crop out in the Messinian Gypsum outcrop of the Vena del Gesso are visible. The first layer consists of giant
selenite crystals and the second of laminated carbonate containing nucleation cones with large gypsum crystals. At the
base of the third layer a large “mammellone” occurs. Its size is slightly smaller than that of the Onferno Cave in the Gypsum outcrop of Eastern Romagna
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
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