Search results for "Semi"
showing 10 items of 3894 documents
Material Change : The Case of Co-located Schools
2022
AbstractIn this chapter, our context is a co-located Swedish and Finnish medium high school campus. From a posthumanist viewpoint, we study the roles and functions of language(s) in the semiotic assemblages of learning environments and ask how language(s) feature as an integral and material part of the change in the spatial repertoire of learning environments. We investigate how the principle of separation of schools by medium of instruction, typical for Finnish education, becomes undermined through a new multilingual soundscape in the co-located schools, where the school community hears and uses many languages every day. In doing this, the co-located schools not only challenge Finnish lang…
Sedentary Patterns and Sit-to-Stand Transitions in Open Learning Spaces and Conventional Classrooms among Primary School Students
2022
Educational reforms worldwide have resulted in schools increasingly incorporating open and flexible classroom designs that may provide possibilities to reduce sedentary behavior among students during lessons. Cross-sectional associations of classroom type on accelerometry assessed sedentary bout durations and sit-to-stand transitions were investigated in 191 third and fifth grade students recruited from one school with open learning spaces and two schools with conventional classrooms. A three-way ANOVA for classroom type, gender and grade level indicated that students in open learning spaces had more 1-to-4-min sedentary bouts (mean difference 1.8 bouts/h, p 10-min sedentary bouts (median 0…
Elinikäisen ohjauksen kaksi vuosikymmentä ja ohjauksen tulevaisuus
2022
Jyväskylän yliopiston Koulutuksen tutkimuslaitoksella juhlistettiin KT Raimo Vuorisen uraa ja eläköitymistä ”Elinikäisen ohjauksen kaksi vuosikymmentä ja ohjauksen tulevaisuus” -seminaarilla 9. kesäkuuta 2022. Vuorisen uran keskeisiä teemoja mukaillen seminaarissa keskusteltiin elinikäisen ohjauksen ja siihen liittyvien politiikkatoimien kehityksestä Suomessa ja maailmalla. Tapahtumaan osallistui paikan päällä reilut 70 henkilöä ja suorassa verkkolähetyksessä keskusteluja seurasi yli 200 katsojaa ympäri maailman. nonPeerReviewed
Maailmanlaajuinen ohjauksen ja urasuunnittelun kuukausi - Global Careers month
2022
Kansainvälisten organisaatiot (Euroopan komission, EU:n ammatillisen koulutuksen kehittämiskeskus Cedefop, Euroopan koulutussäätiö ETF, ILO, OECD, UNESCO ja Maailmanpankki World Bank) järjestävät yhdessä maailmanlaajuisen ohjauksen ja urasuunnittelun kuukauden 8.10. - 12.12.2022. Tänä aikana järjestetään useita ohjausalan tapahtumia yhteistyössä kansainvälisten ja kansallisten toimijoiden kanssa. nonPeerReviewed
Encoding specificity instead of online integration of real-world spatial regularities for objects in working memory
2022
Most objects show high degrees of spatial regularity (e.g. beach umbrellas appear above, not under, beach chairs). The spatial regularities of real-world objects benefit visual working memory (VWM), but the mechanisms behind this spatial regularity effect remain unclear. The "encoding specificity" hypothesis suggests that spatial regularity will enhance the visual encoding process but will not facilitate the integration of information online during VWM maintenance. The "perception-alike" hypothesis suggests that spatial regularity will function in both visual encoding and online integration during VWM maintenance. We investigated whether VWM integrates sequentially presented real-world obje…
Rewilding Language Education: Emergent Assemblages and Entangled Actions
2021
Integrating concepts and techniques from ethnomethodology and sociomaterialism, this article investigates the observable material processes involving human action and place‐based contexts of language use enabled by locative media. The focal pedagogical intervention utilized mobile augmented reality (AR) activities, the development of which was inspired by research on learning ‘in the wild.’ Applying the principle of reverse engineering, we introduce a pedagogical approach termed ‘rewilding’ for its emphasis on designing supportive conditions for goal‐directed interaction outside of classrooms. Three instances of AR materials use are presented from an out‐of‐class activity associated with un…
Signal processing in photonic crystals and nanostructures
2006
International audience; Optical devices employing photonic crystals and novel nanostructure materials may exhibit useful properties for applications to all-optical signal processing. In this work we analyze as a first example four-wave mixing of polarized beams in photonic crystal fibers. We show that by properly tuning the pump wavelength and the linear dispersion properties of the fiber one may obtain broadband parametric amplification and frequency conversion. Next we consider the in-line periodic amplification of short optical pulses by means of quantum-dot semiconductor optical amplifiers. We show by numerical simulations that pattern-free amplification of a 40 Gbit/s soliton signal at…
Atomic layer deposition of AlN from AlCl3 using NH3 and Ar/NH3 plasma
2018
The atomic layer deposition (ALD) of AlN from AlCl3 was investigated using a thermal process with NH3 and a plasma-enhanced (PE)ALD process with Ar/NH3 plasma. The growth was limited in the thermal process by the low reactivity of NH3, and impractically long pulses were required to reach saturation. Despite the plasma activation, the growth per cycle in the PEALD process was lower than that in the thermal process (0.4A ° vs 0.7A ° ). However, the plasma process resulted in a lower concentration of impurities in the films compared to the thermal process. Both the thermal and plasma processes yielded crystalline films; however, the degree of crystallinity was higher in the plasma process. The…
The Recovery of the Optimal Damping Constant by the MRF Damper
2009
In this paper was studied a method to analyze the recovering of optimal damping constant because of temperature increasing in a shock absorber. The increasing on temperature leads to decreasing that constant by mean dynamic viscosity such to modify the dynamic behavior of a 2DOF system built-up by sprung and unsprung mass. A MagnetoRheological damper was designed according with the desired optimal damping constant once fixed temperature design. It was seen that the increasing of temperature this constant is lost. As MagnetoRheological-Fluids allows us to increase the viscosity, we use a control signal by a state feedback of reduced order to create a such magnetic induction field to recover …
Unravelling the Intertwined Atomic and Bulk Nature of Localised Excitons by Attosecond Spectroscopy
2021
The electro-optical properties of most semiconductors and insulators of technological interest are dominated by the presence of electron-hole quasi-particles, called excitons. The manipulation of excitons in dielectrics has recently received great attention, with possible applications in different fields including optoelectronics and photonics. Here, we apply attosecond transient reflection spectroscopy in a sequential two-foci geometry and observe sub-femtosecond dynamics of a core-level exciton in bulk MgF2 single crystals. Furthermore, we access absolute phase delays, which allow for an unambiguous comparison with theoretical calculations. Our results show that excitons surprisingly exhi…