1,720,961 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
Semiclassical solutions of generalized Wheeler-DeWitt cosmology
Full text linkWe consider an extension of Wheeler-DeWitt minisuperpace cosmology with additional interaction terms that preserve the linear structure of the theory. General perturbative methods are developed and applied to known semiclassical solutions for a closed Universe filled with a massless scalar. The exact Feynman propagator of the free theory is derived by means of a conformal transformation in minisuperspace. As an example, a stochastic interaction term is considered, and first order perturbative corrections are computed. It is argued that such an interaction can be used to describe the interaction of the cosmological background with the microscopic d.o.f. of the gravitational field. A Helmoltz-like equation is considered for the case of interactions that do not depend on the internal time, and the corresponding Green's kernel is obtained exactly. The possibility of linking this approach to fundamental theories of quantum gravity is investigated
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
"Trust in authorities and experts as shaping factor of risk perception", Abstract presented at the 42nd National Conference of the GNGTS (Gruppo Nazionale di Geofisica della Terra Solida), Ferrara 13-16 February 2024.
No full textAbstract presented at the 42th National Conference of the GNGTS (Gruppo Nazionale di Geofisica della Terra Solida), Ferrara 13-16 February 2024
Public Administration Capacity Building through Exploring Downward Counterfactuals
No full textOf all natural disasters, those especially liable to exhaust capacity are those that occur without a precedent, and cause surprise to public administration officials. This paper addresses this issue. Surprise can be mitigated by considering downward counterfactuals, which can be viewed as contributing to surprise management. These are alternative realizations of historical events, where things turned for the worse. Disaster risk may be mitigated by focusing on downward counterfactuals. Particular focus is given to the earthquake and volcanic risk at Campi Flegrei, in the Naples region of Italy, where the bradyseism crisis of 1982–1983 is considered from a downward counterfactual perspective
Standardising risk perception assessment: The CORE APP training and competition evaluation protocol
No full textMobile applications are increasingly recognized as vital tools for disaster risk reduction (DRR) and management, particularly in the context of climate change, which exacerbates the frequency and severity of hazards. These apps leverage the widespread adoption of smartphones to enhance community preparedness and response by providing real-time information, interactive simulations, and personalized guidance. They offer advantages over traditional methods, such as timely, location-specific updates and engaging content that resonates with younger audiences. However, many existing applications are limited in scope, often focusing on specific stages of disaster risk management or particular hazard types, which hinders their effectiveness. To address these limitations, the CORE (sCience and human FactOr for a Resilient sociEty)project, funded by the European Union's Horizon 2020 program, aims to enhance disaster resilience through innovative approaches that engage various societal sectors, including education. A key initiative within this framework is the CORE APP Competition, which targets high school students across Europe, encouraging them to develop mobile applications that promote community resilience. This initiative not only educates students on disaster preparedness but also empowers them to take an active role in risk management. The competition incorporates evidence-based risk communication assessments to evaluate its impact on students' risk perception. By employing validated measures of risk perception, the CORE project seeks to determine how participation in APP development influences students' understanding of disaster risks. This approach fosters a culture of preparedness and resilience among youth, ensuring that they are equipped with the knowledge and skills necessary to navigate future challenges. Ultimately, the integration of mobile technology in DRR education represents a significant step toward building resilient communities capable of effectively responding to disasters
Turkish earthquake death tolls: lessons from downward counterfactual analysis and informal construction
No full textEarthquake death tolls are a basic statistical measure of the capability of a country to manage seismic risk. The extremely high Turkish death toll of 50,000 from the Kahramanmara & scedil; earthquake doublet of 6 February 2023 is the product of a cascade of detrimental factors. These need to be explained if lessons from this disaster are to be learned. This is the purpose and objective of this paper, which is a contribution to the interdisciplinary Frontiers research topic on integrated perspectives on the 2023 Turkey and Syria earthquakes: advancing understanding and preparedness across earth sciences, engineering and public health. This paper covers these three disciplines by focusing on casualties, and identifying crucial aspects of earth sciences and engineering which contributed to the high death toll. First, there was a surprising combination of multiple fault segment ruptures, and a high level of ground motion relative to the risk-based Turkish code, indicative of the under-representation of the M7.5+ earthquake doublet event in the national probabilistic seismic hazard model. This combination of fault segment ruptures was missing from all seismic source models. Furthermore, the capability of buildings to cope with strong ground motion was much reduced by informal construction methods, which eroded the margin of safety needed to avoid building collapse. The extent of building code non-compliance was widely underestimated in seismic risk models. Non-compliance is often hard to identify, but construction amnesties make non-compliance more transparent and trackable. The disastrous outcome of the Kahramanmara & scedil; earthquake doublet of 6 February 2023 has drawn global attention to systemic building code non-compliance, and the open official acceptance of informal housing. To demonstrate that this key systemic risk is far from being just a Turkish problem, notably in Istanbul, the challenge of Italian informal housing is highlighted within the context of international building code non-compliance
- …
