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- Moreno Herrera, Lázaro, 1964-
(författare)
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Transitions and Diversity in Didactics : An Exploration Searching for Implications for Vocational Education and Training
- 2015
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Ingår i: International Journal for Research in Vocational Education and Training. - 2197-8638 .- 2197-8646. ; 2:3, s. 161-169
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Tidskriftsartikel (refereegranskat)abstract
- Depending on the perspective and even language, the concept of didactics is defined in different ways. The debate about conceptualization, particularly concerning the equivalence in English of what in other languages, specifically Germanic and Latin languages, is termed ‘didactics’, is well documented in the research literature. There is a claim in this article concerning the need to transcend the language discussion; it is indeed necessary, especially for Vocational Education & training (VET), to develop a close linkage between what some authors consider “an empirically based” side of didactics associated with empirical findings and the “non-empirical” side that is associated with theoretical constructs for understanding the teaching-learning process.The main aim of this article is to revisit research in didactics in German, Nordic and French contexts looking for diversity in the various approaches. This is intended to contribute to the discussion about prospects and shortcomings in the development of a didactics for the intricate subject of vocational education and training. Rather than alternative didactical paths, the article intends to suggest lines of development, encourage discussions and the further research needed concerning relationship didactics and vocational education and training.
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Jerusalem – en väv av berättelser : Tio resenärers möten med en konfliktfylld plats
- 2023
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Samlingsverk (redaktörskap) (övrigt vetenskapligt/konstnärligt)abstract
- Under en vecka i augusti 2022 reste vi en grupp lärare och lärarstudenter från Högskolan Dalarna till Jerusalem, den stad som är en helig plats för tre av världens stora religioner: kristendom, judendom och islam och utgjort centrum för återkommande politiska konflikter. Det här är en bok om berättelsers kraft att forma och omforma människors liv.Vi visste från våra tidigare studier att berättelser har en unik potential att skapa identiteter, världsbilder, moraliska övertygelser och människors syn på varandra. När vi nu samlades i Jerusalem bar var och en av oss med sin egen berättelse om och relation till staden. Dessa bilder var något som vi alla var beredda att sätta på spel. Genom att gå på besök i andras berättelser tillät vi oss att erfara hur livet i staden framträder ur skiftande perspektiv. Vi utvecklade en alltmer mångfasetterad, motstridig men också nyanserad bild av platsen och dess människor.I denna essäsamling framträder tio olika bilder av den resa som vi företog tillsammans. Vi rör oss mellan bilder från gatulivet i Jerusalem, möten med armenisk-kristna palestinier, unga israeler som tagit avstånd från att tjänstgöra i armén och berättelser om de judiska kvarteren. Här finns reflektioner från besök vid stadens heliga platser och om att stå framför den mur som reser sig som en grå betongvägg vid infarten från Jerusalem till Betlehem. Genom dessa berättelser vill vi dela med oss av våra skiftande erfarenheter som vi menar kan bidra till en mångfasetterad undervisning i religion och historia.
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- Neubauer, T. A., et al.
(författare)
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Current extinction rate in European freshwater gastropods greatly exceeds that of the late Cretaceous mass extinction
- 2021
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Ingår i: Communications Earth & Environment. - : Springer Science and Business Media LLC. - 2662-4435. ; 2
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Tidskriftsartikel (refereegranskat)abstract
- The Cretaceous-Paleogene mass extinction event 66 million years ago eradicated three quarters of marine and terrestrial species globally. However, previous studies based on vertebrates suggest that freshwater biota were much less affected. Here we assemble a time series of European freshwater gastropod species occurrences and inferred extinction rates covering the past 200 million years. We find that extinction rates increased by more than one order of magnitude during the Cretaceous-Paleogene mass extinction, which resulted in the extinction of 92.5% of all species. The extinction phase lasted 5.4 million years and was followed by a recovery period of 6.9 million years. However, present extinction rates in European freshwater gastropods are three orders of magnitude higher than even these revised estimates for the Cretaceous-Paleogene mass extinction. Our results indicate that, unless substantial conservation effort is directed to freshwater ecosystems, the present extinction crisis will have a severe impact to freshwater biota for millions of years to come.
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- Velasquez, Juan, 1963, et al.
(författare)
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La ciudadania insurgente de las mujeres de barrios populares en Venezuela: Reflexiones sobre los Consejos Comunales y las Salas de Batalla Social. : Barrio women's insurgent citizenship in Venezuela - Reflexions on Communal Councils and Social Battle Rooms
- 2015
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Ingår i: Espacio Abierto. - 1315-0006. ; 24:3, s. 45-68
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Tidskriftsartikel (refereegranskat)abstract
- This article aims to analyze certain characteristics of the Venezuelan democratic transformation during the Presidency of Hugo Rafael Chávez Frías, particularly from 2002 onwards and with a specific focus on the emergence of barrio women in the new participatory structures. There will be particular attention to the mechanisms enhancing local political participation and social inclusion through the Community Councils (Consejos Comunales) and the Social Battle Rooms (Salas de Batalla Social). Within these instances barrio women had increasingly discovered their own space for individual and collective empowerment. barrio women’s participation in such instances frames a process of gender equality based in scale complementarity in which the structures of macro-politics more dominated by men, while those of micro-politics are generally dominated by barrio women. In this study barrio women’s instances of micro-politics will be conceptualized in terms of insurgent citizenship. The article connects thus to theoretical debates on radical participatory democracy, State-society relations, and the empowerment of barrio women that previously were excluded from the public sphere.
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- Aas, W., et al.
(författare)
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Lessons learnt from the first EMEP intensive measurement periods
- 2012
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Ingår i: Atmospheric Chemistry and Physics. - : Copernicus GmbH. - 1680-7316 .- 1680-7324. ; 12:17, s. 8073-8094
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Tidskriftsartikel (refereegranskat)abstract
- The first EMEP intensive measurement periods were held in June 2006 and January 2007. The measurements aimed to characterize the aerosol chemical compositions, including the gas/aerosol partitioning of inorganic compounds. The measurement program during these periods included daily or hourly measurements of the secondary inorganic components, with additional measurements of elemental- and organic carbon (EC and OC) and mineral dust in PM1, PM2.5 and PM10. These measurements have provided extended knowledge regarding the composition of particulate matter and the temporal and spatial variability of PM, as well as an extended database for the assessment of chemical transport models. This paper summarise the first experiences of making use of measurements from the first EMEP intensive measurement periods along with EMEP model results from the updated model version to characterise aerosol composition. We investigated how the PM chemical composition varies between the summer and the winter month and geographically. The observation and model data are in general agreement regarding the main features of PM10 and PM2.5 composition and the relative contribution of different components, though the EMEP model tends to give slightly lower estimates of PM10 and PM2.5 compared to measurements. The intensive measurement data has identified areas where improvements are needed. Hourly concurrent measurements of gaseous and particulate components for the first time facilitated testing of modelled diurnal variability of the gas/aerosol partitioning of nitrogen species. In general, the modelled diurnal cycles of nitrate and ammonium aerosols are in fair agreement with the measurements, but the diurnal variability of ammonia is not well captured. The largest differences between model and observations of aerosol mass are seen in Italy during winter, which to a large extent may be explained by an underestimation of residential wood burning sources. It should be noted that both primary and secondary OC has been included in the calculations for the first time, showing promising results. Mineral dust is important, especially in southern Europe, and the model seems to capture the dust episodes well. The lack of measurements of mineral dust hampers the possibility for model evaluation for this highly uncertain PM component. There are also lessons learnt regarding improved measurements for future intensive periods. There is a need for increased comparability between the measurements at different sites. For the nitrogen compounds it is clear that more measurements using artefact free methods based on continuous measurement methods and/or denuders are needed. For EC/OC, a reference methodology (both in field and laboratory) was lacking during these periods giving problems with comparability, though measurement protocols have recently been established and these should be followed by the Parties to the EMEP Protocol. For measurements with no defined protocols, it might be a good solution to use centralised laboratories to ensure comparability across the network. To cope with the introduction of these new measurements, new reporting guidelines have been developed to ensure that all proper information about the methodologies and data quality is given.
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- Borälv, E., et al.
(författare)
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The dawn and dusk electrojet response to substorm onset
- 2000
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Ingår i: Annales Geophysicae. - 0992-7689 .- 1432-0576. ; 18:9, s. 1097-1107
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Tidskriftsartikel (refereegranskat)abstract
- We have investigated the time delay between substorm onset and related reactions in the dawn and dusk ionospheric electrojets, clearly separated from the nightside located substorm current wedge by several hours in MLT. We looked for substorm onsets occurring over Greenland, where the onset was identified by a LANL satellite and DMI magnetometers located on Greenland. With this setup the MARIA magnetometer network was located at dusk, monitoring the eastward electrojet, and the IMAGE chain at dawn, for the westward jet. In the first few minutes following substorm onset, sudden enhancements of the electrojets were identified by looking for rapid changes in magnetograms. These results show that the speed of information transfer between the region of onset and the dawn and dusk ionosphere is very high. A number of events where the reaction seemed to preceed the onset were explained by either unfavorable instrument locations, preventing proper onset timing, or by the inner magnetosphere's reaction to the Earthward fast flows from the near-Earth neutral line model. Case studies with ionospheric coherent (SuperDARN) and incoherent (EISCAT) radars have been performed to see whether a convection-induced electric field or enhanced conductivity is the main agent for the reactions in the electrojets. The results indicate an imposed electric field enhancement.
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