131,847 research outputs found
From project to process: school gardens as vehicle for territorial sustainability. A case study from the Milan metropolitan area.
No full textThe study will examine at first the great importance of food education by framing it in the wider context of some globally present critical phenomena. Accelerated urban population growth, dramatic shrinking of rural areas and food systems as well as progressive unsustainability are today profoundly altering our territories and ways of living. A key occasion for a worldwide reflection upon the latter is represented by the Milan 2015 EXPO, that however should be imagined not as limited temporal event but instead should be a stimulus for creating a higher awareness. Accordingly to this vision, in its core a part of the paper will analyze a bottom-up design and social experience, located in the Milan metropolitan area, that chooses the schools' network as a strategic mean for both future generations education and adult public sensitizing. In particular, the study will illustrate how a micro-architectural project (vertical garden prototype), if intended as a process (discussion and action catalyst involving simultaneously designers, public and private actors, and children), has the potential to address in effective way the poor conditions of current food education. The vertical garden, realized by the same students, is in fact conceived as a starting point for exploring broader themes like: food systems, water in urban environment, food packaging and recycling. Thus, the process goes beyond the school garden boundaries and aims at real positive impact for the overall territorial development. Within the conclusive section the paper will discuss the main difficulties to tackle with, and the potentialities to be valorized and experimented in other contexts
MeSH term explosion and author rank improve expert recommendations
No full textInformation overload is an often-cited phenomenon that reduces the productivity, efficiency and efficacy of scientists. One challenge for scientists is to find appropriate collaborators in their research. The literature describes various solutions to the problem of expertise location, but most current approaches do not appear to be very suitable for expert recommendations in biomedical research. In this study, we present the development and initial evaluation of a vector space model-based algorithm to calculate researcher similarity using four inputs: 1) MeSH terms of publications; 2) MeSH terms and author rank; 3) exploded MeSH terms; and 4) exploded MeSH terms and author rank. We developed and evaluated the algorithm using a data set of 17,525 authors and their 22,542 papers. On average, our algorithms correctly predicted 2.5 of the top 5/10 coauthors of individual scientists. Exploded MeSH and author rank outperformed all other algorithms in accuracy, followed closely by MeSH and author rank. Our results show that the accuracy of MeSH term-based matching can be enhanced with other metadata such as author rank
Taxas de decaimento para a energia associada a um sistema semilinear de ondas elásticas em Rn com potencial do tipo dissipativo
No full textDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas. Programa de Pós-Graduação em Matemática Pura e Aplicada, Florianópolis, 2013Neste trabalho estuda-se a existência e a unicidade de soluções globais do problema de valor inicial, associado ao sistema semilinear de ondas elásticas em um meio isotrópico, com uma não linearidade do tipo não absorvente. O coeficiente do termo dissipativo é um potencial não constante em Rn e estudam-se os casos quando esse potencial dissipativo é do tipo considerado crítico e não crítico. Taxas de decaimento da energia total também são estudadas para os casos linear e semilinear. A existência e o decaimento para o problema semilinear são obtidos mediante a hipótese de dados iniciais pequenos. Neste trabalho seguimos ideias de Charão-Ikehata [6] e de Ikehata-Todorova-Yordanov [10].Abstract : We study the existence and uniqueness of global solutions of the initial value problem associated to the semi-linear system of elastic waves in an isotropic medium with a nonlinearity of type nonabsorption. The coefficient of the dissipative term is non constant potential in Rn and we study the case where the potential type of damping is considered critical and noncritical. Decay rates of the total energy are also studied for linear and semi-linear system. The global existence and the asymptotic behavior of the semi-linear problem are obtained on the hypothesis of small initial data. In this work we fallow ideas of Charão-Ikehata [6] and Ikehata- Todorova-Yordanov [10]
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
Spazi di lettura. Rassegna bibliografica di testi e documenti per la ricerca e la didattica giuridica del Seminario di Storia del diritto medievale e moderno
No full textCatalogo illustrato delle riproduzioni di materiali bibliografici e archivistici antichi conservati nella Biblioteca del Seminario di Storia del diritto dell'Università di Padov
Construing the COVID-19 Pandemic in the UK: A Qualitative Study
No full textThe COVID-19 pandemic and measures used to contain it have had a significant psychosocial impact. This paper reports a study of its psychological effects in 108 UK residents who completed an online survey between the first and second waves of the pandemic asking them to describe the main difficulties that they experienced and how they coped with these, what they had learnt from the pandemic, and their anticipations of a post-pandemic future. Deductive thematic content analysis of the results in terms of diagnostic constructs of personal construct psychology identified overarching themes of transitions, with themes of anxiety, threat, loss of role, sadness, contempt, and stress; strategies, with themes of constriction, hostility, and individual coping strategies; reconstruction, including revision of superordinate constructs, revision of subordinate constructs, and no reconstruction; and anticipations, with themes of recovery of certainty and structure, constriction, dilation, aggression, and no anticipation. Two contrasting patterns were observed, one characterized by failure to reconstrue, hostility, and/or constriction, and the other by revision of superordinate constructs, dilation, and/or aggression
"Closing the R&D Gap, Evaluating the Sources of R&D Spending"
No full textBoth spending and tax policies have been implemented in the United States with the goal of stimulating private sector research and development (R&D). Karier questions whether current R&D policy, especially the research and experimentation tax credit, can contribute to closing the gap between nondefense expenditures on R&D in the United States and such expenditures in other countries, such as Japan and Germany. He also explores possible changes to our current R&D policy to make it more effective.
Dispelling the Myths Behind First-author Citation Counts
No full textWe 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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