Search results for "Base"
showing 10 items of 8362 documents
Des données ouvertes sur la décomposition des litières végétales dans les sols selon divers contextes agronomiques et pédoclimatiques
2021
International audience
Co-evolution between streaming and live music leads a way to the sustainable growth of music industry : Lessons from the US experiences
2017
While digitization of music, particularly streaming services, has gained increasing popularity, it has also led to a steady decline in the revenues of recorded music industry. This is causing strong concern regarding a potential collapse of the music industry comparable to other print media industries such as newspaper and book publishing. However, recent changes in the music industry initiated by a resurgence of the live music industry are giving rise to some expectations for the survival and growth of the music industry. The parallel paths of increasing popularity of streaming services and a resurgence of live music suggest that these two dynamics are working together in a co-evolutionary…
Tatouage des bases de données
2010
Database watermarking techniques allow for hiding information in a database, like a copyright mark. While watermarking methods are numerous in the multimedia setting, databases present various specificities. This work addresses some of them: how to watermark a numerical database while preserving the result of interesting aggregate queries, how to watermark a structured stream like a typed XML stream or a symbolic music score, how to watermark geographical data sets.
The psychology of streaming : exploring music listeners’ motivations to favour access over ownership
2016
Digital streaming represents the most radical development in the way we experience music since the invention of automatic playback technologies two centuries ago. From zero ownership and on-demand access to a virtually limitless library of music via a disconnected financial transaction, streaming services challenge previous conceptions of how music is defined, experienced and consumed. This paper explores streaming from a psychological perspective, and highlights a range of factors that motivate users to favour access over ownership. From removal of responsibilities of ownership to enhanced discovery, nostalgia-fulfilment to augmented emotional engagement, adoption of access-based consumpti…
What makes segmentation good? A case study in boreal forest habitat mapping
2013
Segmentation goodness evaluation is a set of approaches meant for deciding which segmentation is good. In this study, we tested different supervised segmentation evaluation measures and visual interpretation in the case of boreal forest habitat mapping in Southern Finland. The data used were WorldView-2 satellite imagery, a lidar digital elevation model (DEM), and a canopy height model (CHM) in 2 m resolution. The segmentation methods tested were the fractal net evolution approach (FNEA) and IDRISI watershed segmentation. Overall, 252 different segmentation methods, layers, and parameter combinations were tested. We also used eight different habitat delineations as reference polygons agains…
Pre-service and in-service teachers' experiences of inquiry-based primary science teaching : A collaborative team teaching model
2019
This research clarifies how a collaborative team teaching model (CTTM) can support both pre-service and in-service teachers’ professional development in using inquiry-based science teaching in primary schools. The data were collected via a questionnaire-based survey approach after inquiry projects implementation at public schools in four Finnish cities. In total, 98 pre-service teachers and 51 inservice class teachers were involved in the research. According to their experiences collaborative team teaching was seen as an adequate teaching approach in primary school science lessons. Both in-service and pre-service teachers experienced inquirybased science teaching enthusiastically and receiv…
Pre-service teachers and guided inquiry-based science teaching with simulations
2017
The aim of this dissertation was explore the beliefs and practices of pre-service primary teachers on using simulations as a part of guided inquiry-based lessons. Even though research has shown that using simulations to learn science offers certain learning benefits compared to other forms of instruction, their use in Finnish schools is still rare compared to the international average. Teacher training has the potential to promote the use of simulations in primary classrooms. Internationally, research has been called for the role of teachers in learning and teaching with simulations. As a part of this dissertation, an intervention was designed to accustom a group of pre-service teachers to …
Tutkiva oppiminen evoluution opetuksessa lukiossa
2017
Uusi opetussuunnitelma velvoittaa opettajia kokeellisuuden ja tutkimuksellisuuden hyödyntämiseen opetuksessa, ja eräs keino tähän on tutkiva oppiminen. Tutkivassa oppimisessa tietoa ei omaksuta suoraan oppikirjasta tai opettajalta, vaan sitä hankitaan tieteelle tuttujen toimintamallien, kuten kysymysten, hypoteesien, selitysten ja kokeiden avulla. Tutkivan oppimisen vaiheet muodostavat yhdessä tutkivan oppimisen polun, jossa tieto tarkentuu vaihe vaiheelta. Opiskelijoita voidaan haastaa tutkivassa oppimisessa eri tavalla riippuen ovatko tutkimuskysymykset, menetelmät tai ratkaisut annettu heille etukäteen. Tutkivaa oppimista voidaan hyödyntää erilaisten aihepiirien opetuksessa kaikenikäiste…
The relationship between credit ratings and asset liquidity: Evidence from Western European banks
2020
This study examines the role of asset liquidity in Western European banks’ credit rating downgrades and upgrades over the 2005–2017 period. The results suggest that changes in bank credit ratings have been more favorable for banks that have a liquid asset portfolio. Furthermore, asset liquidity has a stronger effect on the credit rating of banks that already have an illiquid asset portfolio. In contrast, the effect is significantly smaller or nonexistent for the most liquid banks. These results imply that the new liquidity regulation introduced by the Basel III requirements will improve the stability and hence decrease the fragility of the European banking sector. Furthermore, the benefits …
Thermalization of hot electrons via interfacial electron-magnon interaction
2019
Recent work on layered structures of superconductors (S) or normal metals (N) in contact with ferromagnetic insulators (FI) has shown how the properties of the previous can be strongly affected by the magnetic proximity effect due to the static FI magnetization. Here we show that such structures can also exhibit a new electron thermalization mechanism due to the coupling of electrons with the dynamic magnetization, i.e., magnons in FI. We here study the heat flow between the two systems and find that in thin films the heat conductance due to the interfacial electron-magnon collisions can dominate over the well-known electron-phonon coupling below a certain characteristic temperature that ca…