Search results for "iron"
showing 10 items of 31116 documents
Tendon length estimates are influenced by tracking location
2022
Abstract Purpose Measurement of medial gastrocnemius (MG) tendon length using ultrasonography (US) requires the muscle–tendon junction (MTJ) to be located. Previously, the MG MTJ has been tracked from different proximo-distal locations near the MTJ, which could influence estimates of tendon length change due to the different characteristics of the aponeurosis and tendon. We used US to evaluate the effect of tracking point location on MG MTJ displacement during maximal and submaximal (10, 20 and 30% of the non-injured maximal) isometric plantar flexion contractions. Methods Displacement behaviour of MTJ was tracked from (1) the exact MTJ; and (2) from an insertion point of a muscle fascicle …
Kahden digitaalisen oppimisympäristön käytettävyystutkimus
2016
Tässä pro gradu -tutkielmassa tavoitteena oli tarkastella opiskelijoiden kokemuksia digitaalisen oppimisympäristön käytettävyydestä mahdollisten kehitettävien osa-alueiden löytämiseksi. Tavoitteeseen pyrittiin vastaamaan seuraavien tutkimuskysymyksten myötä: Millaiseksi kahden eri oppilaitoksen opiskelijat kokevat käyttämänsä digitaalisen oppimisympäristön käytettävyyden SUS-mittarilla ja avoimilla kysymyksillä arvioituna? Mitä seikkoja opiskelijat nostavat esiin käyttämänsä digitaalisen oppimisympäristön käytettävyyden kehittämiseksi? Työn alkuosassa esitellään verkko-oppimisen ja -pedagogiikan teoriaa. Päätuloksina tässä tutkimuksessa tulivat esiin Moodle -oppimisympäristön osalta hyvä kä…
L’habitat durable sans l’habiter ? Fabrique de la densité en Bourgogne
2017
In 2009 and 2010, in order to combat the urban sprawl, the Grenelle Environment sets out urban density as a public policy issue. This notion builds on a modus operandi of an urbanization regime that includes both the environmental and the participatory dimensions in its approach. This injunction of sustainability is there implemented through a range of standards, rules and procedures, while the stakeholders in urbanism strive to arrange the experience of inhabiting. But how does this apparatus take the test of reality into account? Based on a qualitative research carried out from 2012 to 2015 on urban planning projects intended to increase density in urban and suburban areas in Burgundy, th…
Alarmist by bad design: Strongly popularized unsubstantiated claims undermine credibility of conservation science
2019
“Unless we change our ways of producing food, insects as a whole will go down the path of extinction in a few decades.” or “Our work reveals dramatic rates of decline that may lead to the extinction of 40% of the world's insect species over the next few decades.” These are verbatim conclusions of the recent paper by Sánchez-Bayoa and Wyckhuys (2019) in Biological Conservation. Because of fundamental methodological flaws, their conclusions are unsubstantiated. Like noted by The Guardian, the conclusions of the paper were set out in unusually forceful terms for a peer-reviewed scientific paper. The current case…
Applicability of hybrid aspen (Populus tremula L. × P. tremuloides Michx.) bark extract as a precursor of rigid carbon foam and activated carbon
2023
Hybrid aspens have long attracted scientific interest, but the research on their use as feedstocks for chemical applications are still very limited. The bark biomass of the poplar species contains many valuable extractives that can be utilized as value-added products. This paper examines the applicability of hybrid aspen (Populus tremula L. × P. tremuloides Michx.) bark extract as a precursor of rigid carbon foam and activated carbon. To explore this, the study considers 1) the basic chemical composition of the bark in terms of added value potential, 2) the basic chemical composition of the bark extract and the effect of its pretreatment on the extract composition, 3) the production of rigi…
NES spēļu spēlēšana, izmantojot imitāciju mācīšanos
2019
Mākslīgā intelekta pielietojumi kļūst aizvien būtiskāki un izplatītāki. Pētījumā apskatīta imitāciju mācīšānās metode, kas var paātrināt mācīšanās procesu problēmu risināšanai, ja ir pieejamas eksperta demonstrācijas. Par pētījuma risināmo problēmu izvēlēta NES spēļu spēlēšana, izmantojot vispārīgu algoritmu, kas nav atkarīgs no katras spēles noteikumiem. Darbā realizēti divi imitāciju mācīšanās algoritmi, izmantojot pārraudzīto mācīšanos un stimulēto mācīšanos. Abi piegājieni beidzās neveiksmīgi.
Interaction between surface plasmon polaritons and molecules in strong coupling limit
2016
Miniaturization of optical elements and their integration to electronic circuits is limited by diffraction limit. It was realized that light being coupled to surface plasmons (SP) can overcome this limit. Employing also optically active molecules in combination with SPs can drive optical circuits to nm-scale and add functionalities. For efficient performance of plasmonic elements involving fluorescent dye molecules investigation of physics behind their interaction is of high priority. In this thesis interaction between surface plasmon polaritons (SPPs) and different dye molecules has been studied, especially within strong coupling limit, which brings in totally new physical properties in th…
L'interaction lieu - objet comme conceptualisation de l'expérience vécue : test d'un modèle intégrateur
2008
L'expérience vécue par le consommateur fait l'objet de conceptualisations réductrices et normatives en marketing. Cet article défend une conceptualisation plus étoffée de l'expérience vécue fondée sur une interaction lieu-objet et s'appuyant sur le concept de valeur. Une analyse empirique dans le domaine du spectacle vivant est menée en vue de comparer des modélisations concurrentes de l'expérience vécue. Les résultats mettent en avant l'importance du rôle joué par le lieu de consommation comme cadre de l'expérience vécue et confirment son influence indirecte sur la valeur globale perçue. Enfin, ils permettent une validation des différents outils destinés à opérationnaliser ce modèle.
A New Academic Quality at Work Tool (AQ@workT) to Assess the Quality of Life at Work in the Italian Academic Context
2022
Refereed/Peer-reviewed The present study provides evidence for a valid and reliable tool, the Academic Quality at Work Tool (AQ@workT), to investigate the quality of life at work in academics within the Italian university sector. The AQ@workT was developed by the QoL@Work research team, namely a group of expert academics in the field of work and organizational psychology affiliated with the Italian Association of Psychologists. The tool is grounded in the job demands-resources model and its psychometric properties were assessed in three studies comprising a wide sample of lecturers, researchers, and professors: a pilot study (N = 120), a calibration study (N = 1084), and a validation study …
SST Comparison of AVHRR and MODIS Time Series in the Western Mediterranean Sea
2020
La temperatura de la superficie del mar (SST) es un parámetro clave para comprender los procesos atmosféricos y oceánicos. Desde finales de la década de 1980, las imágenes de satélite infrarrojas se han utilizado para complementar los registros in situ para estudiar la variabilidad temporal y espacial de la SST. El radiómetro avanzado de muy alta resolución (AVHRR) del satélite de la Administración Nacional Oceánica y Atmosférica (NOAA) fue el primer sensor utilizado con éxito para calcular la SST después del desarrollo y validación del algoritmo de corrección atmosférica conocido como 'ventana dividida'. Más recientemente, el espectrorradiómetro de imágenes de resolución MODERADA (MODIS) a…