1,721,159 research outputs found
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
Multisensory Technologies to Support Teaching: an Ongoing Project
No full textTechnology is increasingly widespread in schools, but it does not always find an application that fits the needs of teachers and students. A reason for that is that stakeholders are often not sufficiently involved in the design process. This paper focuses on multisensory technologies for education and on the initial stages of a design process that involved teachers and researchers with background including computer engineering, cognitive science, and digital humanities. We asked teachers to participate in brainstorming and iterative design sessions aimed at designing educational activities for kindergarten and primary school children. These include activities for a more active attitude of children during roll call, for understanding circularity of time as well as for learning mathematical topics. Questionnaires and structured interviews were used for an initial evaluation. Results are encouraging and the next step will consist in developing the mock-ups realized into applications for use and evaluation in the classroom
Photobiomodulation Affects Key Cellular Pathways of all Life-Forms: Considerations on Old and New Laser Light Targets and the Calcium Issue
No full textAfter 50 years of studies on photobiomodulation (PBM), there is still so much to investigate to understand the laser light-nonplant cells interactions. The current scientific knowledge allows to say that the phenomena induced by PBM are based on cellular pathways that are the key points of cell life. The mitochondria chromophores, also present on the bacterial membrane, the calcium channels, ion that regulates the life-and-death cellular processes, as well as the TRP family, whose genes have been found in protozoa and suggest that its basic mechanism evolved long before the appearance of animals, seem to be elective targets in photobiomodulatory events by wavelengths from 600 up to 980 nm. The ambiguous resulting cellular communication way, mediated by ATP, ROS and/or calcium, leads to cell manipulation, which modifies its metabolism and whose response connects all life-forms from bacteria to vertebrates. Because of the Giano-Bifronte features of ROS and calcium, as well as the fine balance of energetic mitochondrial processes, whose alteration is responsible for several diseases, the PBM can show unpredictable results and it requires scrupulous approach to avoid cellular damages. However, when carefully applied, PBM is able to improve nonhealthy cell's responses and represents a reliable support in human and veterinary medicine
von Humboldt Day – Genoa 1st October 2019: 250th anniversary of the birth of Alexander von Humboldt. (Editorial).
No full textThe proceedings of the von Humboldt Day (Genoa 1st October 2019) to celebrate the 250th anniversary of the birth of Alexander von Humboldt are introduced
Gradual and selective trace-element enrichment in slab-released fluids at sub-arc depths
No full textThe geochemical signature of magmas generated at convergent margins greatly depends on the nature of fluids and melts released during subduction. While major- and trace-elements transport capacity of ultrahigh pressure (UHP) hydrous-silicate melts has been investigated, little is known about solute enrichment and fractionation in UHP (>3.5–4 GPa) solute-rich aqueous fluids released along colder geothermal gradients. Here, we performed in situ LA-ICP-MS trace-element analyses on selected UHP prograde-to-peak fluid inclusions trapped in a kyanite-bearing quartzite from Sulu (China). The alkali-aluminosilicate-rich aqueous fluid released from the meta-sediments by dehydration reactions is enriched in LILE, U, Th, Sr, and REE. Inclusions trapped at increasing temperature (and pressure) preserve a gradual and selective trace-element enrichment resulting from the progressive dissolution of phengite and carbonate and the partial dissolution of allanite/monazite. We show that, at the investigated P-T conditions, aqueous fluids generated by dissolution of volatile-bearing minerals fractionate trace-element distinctly from hydrous-silicate melts, regardless of the source lithology. The orogenic/post-orogenic magmas generated in a mantle enriched by metasomatic processes involving either solute-rich aqueous fluids or hydrous-silicate melts released by the slab at UHP conditions can preserve evidence of the nature of these agents
A Somaesthetics Based Approach to the Design of Multisensory Interactive Systems
No full textThis paper aims to analyse the state-of-the-art of somaesthetics, describing the scientific and philosophic basis of the discipline, in order to devise how to implement a soma-based design. The goal is to apply the somaesthetics approach to the design of multisensory interactive systems for the purpose of creating novel technology designs for people with disabilities that can foster their participation and improve their daily life and overall well-being. Somatics can be intended as a set of instrumental values to increase bodily awareness. It allows us to get in touch with our own inner states, which can lead to a personal evaluative dimension for the designer, which can be used to integrate existing methods for evaluating experiences. Paying attention to one’s own bodily states is key as it can turn such states in desing material. This concept was further developed with Shusterman’s somaesthetics, a theoretical framework for aesthetic experiences. In the paper, we present examples of somaesthetics approaches to the design of interfaces (e.g. the SomaMat, that uses heat stimuli to guide the user attention to different parts of his/her body and can be a support for exercising or a tool to increase the body awareness). Moreover, we illustrate existing practices to design such as Embodied Sketching or Moving and Making Strange that are based on the body as the starting point of the design process, usually preceded by techniques such as defamiliarization or Feldenkrais exercises. Then, we move on to our forthcoming research, aimed at applying a somaesthetics approach to create a system for two possible groups of users: (1) children who are patients at the Giannina Gaslini Institute (a pediatric hospital) and (2) visually impaired and blind people members of Unione Italiana Ciechi (an Italian association of blind people). The system will help users move together, to increase interaction between them as well as involve them in educational and creative activities. The work will be carried out under the PNRR RAISE project (Robotics and AI for Socio-economic Empowerment; https://www.raiseliguria.it/)
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
- …
