1,721,012 research outputs found
Guidelines for teaching and learning science in creative ways
No full textThe Guidelines for teaching and learning science in a creative way are the final outcome of the EU STENCIL Project (http://www.stencil-science.eu/index.php). The Guidelines wants to offer to educational authorities and policy makers from all over Europe an opportunity for thinking about innovation on science education, taking into account the everyday teachers experiences and the inputs from science education research in Europe.
The Guidelines include the 3 parts:
1. Science education in the European context that outlines a picture of science education issues at EU level and from an historical point of view;
2. Analysis of the STENCIL catalogue and stakeholders questionnaires, which presents a discussion of the data collected and analyzed within STENCIL, and identifies critical problems and gaps.
3. Conclusion and Recommendations that presents the results of the reflection on the data analyzed and gives recommendations to policy makers for future actions and future projects
The Manifesto for teaching and learning science in a creative way
No full textManifesto for teaching and learning science in a creative way is one of the final outcomes of the STENCIL project (http://www.stencil-science.eu/). The Manifesto presents the five recommendations derived from the analysis of the outcomes of the STENCIL project and results in a short and visual way. A more extended version of the outcomes are reported in the STENCIL Guidelines.
The Manifesto is translated in 9 languages
ROSSLOPE: Past and present sedimentary dynamic in the ROSS Sea: a multidisciplinary approach to study the continental SLOPE
No full textThe ROSSLOPE is an Italian Antarctic project approved in the framework of the
PNRA. The investigation of the interactions among marine currents, sea floor
morphology, sediment texture and benthic communities is crucial to understand the
dynamics of depositional and erosive processes on present-day seafloor, and
represents an important key to study the paleo-environmental variation of the
southern antarctic and subantarctic areas.
This project aims to investigate the relation between present and past water mass
circulation from modern and late-Cenozoic sedimentary sequences of the Ross Sea
outer shelf and continental slope of the area of Adare and Central Basins, and the
area to the east of Pennell-Iselin Banks. The study will be performed through the
comparison and integration of data concerning the circulation of the present dense,
cold water masses produced in the Ross Sea (HSSW e ISW), with 1) measurements
of physical-chemical-biotic characteristics of surface sediments (water-sediment
interface) and within the top 5 meters beneath the seafloor, 2) the geo-morphological
features of these areas, 3) benthic acoustic facies typically related both to bottomcurrent
activity (i.e. sediment drifts) and to down-slope mass processes within the
stratigraphic section.
In these areas few and scattered geological, geophysical, oceanographic and
morpho-bathymetric data exist. We propose to study these existing data. The data
base is constituted of previous data of: 1) multibeam surveys collected during PNRA
and USA geophysical cruises 2) single-channel and multichannel Italian and foreign
seismic data available by the Seismic Data Library System 3) PNRA sediment box
cores and cores of which most already studied for other purposes and others yet to
be studied.
Moreover new morpho-bathymetric and sub-bottom acoustic data together with cores
and box cores will be collected. All results will be compared in a multidisciplinary way
with oceanographic knowledge to provide a depositional model of the modern
continental slope processes as a basis for paleoceanographic reconstructions
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
Timing of transverse ridge uplift along the Vema transform (Central Atlantic)
No full textTransverse ridges are large topographic anomalies running adjacent to slow-slip oceanic transforms. They form due to different processes, including thermal stresses, hydration-dehydration of peridotites, non-linear viscoelastic rheology of the oceanic crust and vertical tectonic motions of lithospheric slivers induced by changes in ridge/transform geometry, causing transpression and/or transtension along the transform boundary. A prominent transverse ridge on the southern side of the Vema transform (Central Atlantic) rose probably between 12 and 10 Ma along the entire length (≈ 320 km) of the transform, exposing a relatively undisturbed section of oceanic lithosphere. We used pelagic limestones encrusting serpentinized peridotites sampled from the lower slopes of the uplifted lithospheric section to date this uplift and define mechanisms of its emplacement. Ages were obtained both by micropaleontology (foraminifera and nannofossils) and by 87Sr/86Sr isotope ratios. No ages older than ≈ 12 Ma were obtained, even in samples recovered at sites with crustal ages (determined by magnetic anomalies) well over 12 Ma; on the other side, ages as young as 5.6–8.3 Ma were found in clusters of samples collected from the eastern part of the transverse ridge, probably due to mass-wasting episodes that rejuvenated the substratum. These results support the hypothesis that the Vema Transverse Ridge rose between 12 and 10 Ma due to flexural uplift related to transtension along the transform, in line with a general model whereby transverse ridges rise during discrete events as a consequence of changes in ridge-transform geometry
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
SperimEstate, uno stage per accompagnare gli studenti di scuola negli istituti di ricerca/ SperimEstate, a stage bringing school students to research institutes
No full text"SperimEstate" è un’iniziativa promossa dall'Area della Ricerca CNR-INAF di Bologna per lo svolgimento di stages estivi. Si tratta di una interessante possibilità offerta dal mondo della ricerca al mondo della scuola per favorire una migliore formazione scientifica e tecnologica di studentesse e studenti. Tale azione si inserisce nell’ambito di una collaborazione intrapresa da anni con il mondo dell'istruzione secondaria superiore all'interno della convenzione quadro dell’Ente con il Miur
Foraminiferal response to the deposition of insolation cycle 90 sapropel in different Mediterranean areas
No full textAbstract. Foraminifera were investigated across the sapropel unit corresponding to insolation cycle 90 deposited in three different oceanographic and depositional settings of the Mediterranean Sea (Alboran Sea, South Adriatic Sea and Ionian Sea). The constant presence of benthic foraminifera throughout the sapropels at <2000 m water depth and their absence within the sapropel at greater depth (>3000 m) indicate that the severity of oxygen depletion at the time of sapropel onset increases with increasing water depth.Planktonic and benthic foraminiferal patterns also document an interruption during sapropel deposition, which allows for the recognition of two sapropel phases. In all basins, the short interruption appears to be related to climatic deterioration, which led to the break in stratification and, hence, to the re-oxygenation of bottom waters. Since the interruption of the time-equivalent sapropel intervals has been documented previously in other Mediterranean areas, these data support the recent theory that this interruption must have been a trans-Mediterranean phenomenon and that the interruption records a short excursion out of the periods of wet climate associated with precessional minima.
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