Search results for "MATERIA"
showing 10 items of 33501 documents
Visuaaliset resurssit suomi toisena kielenä -oppitunneilla : multimodaalinen näkökulma
2013
Oppimateriaaleilla ja muilla luokassa käytetyillä resursseilla on suuri vaikutus siihen, millaiseksi oppimisympäristö muotoutuu ja millaista toimintaa se mahdollistaa. Useat kansainväliset tutkimukset ovat osoittaneet, että visuaalisten ja multimodaalisten resurssien hyödyntäminen kielen opetuksessa auttaa rakentamaan oppimisympäristöä, joka on pedagogisesti rikas, motivoiva sekä monipuolisia oppimisprosesseja tukeva. Visuaalisuuden roolia suomalaisessa kielen oppimisen kontekstissa ei kuitenkaan ole tutkittu juuri lainkaan. Tutkielman kiinnostuksen kohteena on visuaalisuus hyvin laajasti ymmärrettynä, jolloin perinteisten kuvien lisäksi siihen kuuluvat myös esimerkiksi eleet, esineet, liik…
Development and characterisation of polymer composite materials with bio-inspired functions
2018
Promocijas darbs ir izstrādāts disertācijas veidā fizikas nozarē materiālu fizikas apakšnozarē. Pētījums tika veikts LU Materiālu mehānikas institūtā. Darbs saistīts ar aktuālu un jaunu pētījumu virzienu: bioinspirēto funkciju tālāku attīstīšanu slodzi nesošos kompozītos. Tās ir mehānisku triecienu vizuālās indikācijas un polimēru matricas vaskulārās pašdziedināšanas funkcijas. Šīs funkcijas tika nodrošinātas, izveidojot viedus slāņus un iebūvējot tos kompozītā. Pētījumā tika noskaidrotas piemērotās pārbaužu secības, attīstītas kvantitatīvas metodes un mehānisks modelis, lai novērtētu jauno funkciju efektivitāti kompozītos. Ir pierādīta funkciju augstā efektivitāte un spēja uzlabot slodzi n…
Performative Archives: The Visual Poetry of bpNichol and Derek Beaulieu
2019
International audience; La performance de l’archive dans la poésie visuelle de bpNichol et Derek Beaulieu”En s’adonnant à la dimension matérielle de l’écriture, la poésie visuelle s’engage dans une voie exploratrice qui pense ensemble matériau, écriture et mémoire. La figure de l’archive se decline au sens métaphorique pour dire cette relation. Elle traverse la tradition poétique en suivant la trace des formes adoptées par les divers supports de l’écrit. Si la poésie visuelle peut se dire archive de l’expérience scripturale, ses inscriptions sont le reflet du flux qui caractérise une esthétique et un environnement conditionnés de maniére croissante par des supports technologiques. Cet artic…
Lukiolaisten oppiminen infograafien avulla
2017
Tässä tutkimuksessa selvitettiin, onko infograafien käyttäminen oppimateriaalina yhteydessä parempiin oppimistuloksiin. Infograafi on multimodaalinen tekstilaji, joka toimii itsenäisenä tekstinä. Tutkimuksessa keskityttiin staattisena eli liikkumattomana infograafina toteutetun oppimateriaalin käyttöön. Vertailukohteena käytettiin kirjoitettua tekstiä. Tutkimuksen kohdejoukkona olivat lukiolaiset (n=45), jotka jaettiin satunnaisesti infograafiryhmään (n=22) ja vertailuryhmään (n=23). Oppimateriaaliin tutustuttuaan opiskelijat tekivät oppimista mittaavan ja taustatietoja kartoittavan kyselyn. Viikon päästä ensimmäisestä mittauksesta tehtiin toistomittaus, jossa kysyttiin samat oppimista mitt…
Procedures for study of teaching practices. Literature Review
2012
Interest in studying teaching practices has increased, because of the need to evaluate teachers and dissatisfaction with the usual ways of doing it. Recent approaches with Value-Added Models, based on students’ results on achievement tests do not seem satisfactory. The article is based on a review of literature and classifies the approaches to practices in three groups: instruments based on information given by teachers; observation protocols; and approaches based on the analysis of products of the practices. Specific tools are described and advantages and disadvantages of the three approaches are discussed. El interés por las prácticas docentes ha aumentado, en parte por la necesidad de ev…
Lidar detection of carbon dioxide in volcanic plumes
2015
Volcanic gases give information on magmatic processes. In particular, anomalous releases of carbon dioxide precede volcanic eruptions. Up to now, this gas has been measured in volcanic plumes with conventional measurements that imply the severe risks of local sampling and can last many hours. For these reasons and for the great advantages of laser sensing, the thorough development of volcanic lidar has been undertaken at the Diagnostics and Metrology Laboratory (UTAPRAD-DIM) of the Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA). In fact, lidar profiling allows one to scan remotely volcanic plumes in a fast and continuous way, and with high s…
Electrical conductivity of glass fiber-reinforced plastic with nanomodified matrix for damage diagnostic
2021
The electrical conductivity of glass fiber-reinforced plastic (GFRP) with epoxy matrix modified by multiwall carbon nanotubes (MWCNT) was studied. The electrical conductivity of nanomodified lamina and multi-layered GFRP was investigated on several levels using a structural approach. Components of the electrical conductivity tensor for unidirectional-reinforced monolayer were calculated similarly as in micromechanics using the conductivity of the nanomodified matrix. The electrical conductivity of multilayer composite was calculated using laminate theory and compared with values measured experimentally for various fiber orientation angles. Calculated and experimental data were in good agree…
Dating archaeological copper/bronze artifacts by using the voltammetry of microparticles.
2014
A method for dating copper/bronze archaeological objects aged in atmospheric environments is proposed based on the specific signals for cuprite and tenorite corrosion products measured through the voltammtry of microparticles method. The tenorite/cuprite ratio increased with the corrosion time and fitted to a potential law that yielded a calibration curve usable for dating purposes.
Voltammetric determination of platinum in perfusate and blood: Preliminary data on pharmacokinetic study of arterial infusion with oxaliplatin
2012
Abstract Because Platinum Group Elements have found widespread use in catalytic converters in cars and as chemotherapeutic agent, interest in the development of reliable analytical methods is carried out in order to monitor these analita in humans to protect the citizen's health. Considering that information on the levels of many trace elements in biological matrices is scarce and for many non-essential elements, baseline levels in the population, and especially in those particularly exposed to the risk are lacking, in this paper we optimize an analytical method for biological matrices, using a voltammetric technique to measure the concentration of Pt in blood and perfusate. The amount of P…
Volumes of aqueous block copolymers based on poly(propylene oxides) and poly(ethylene oxides) in a large temperature range: A quantitative description
2006
The focus of this paper was on a quantitative comprehension of temperature effect on the volumes of aqueous di-block and triblock copolymers, based on propylene oxide (PO) and ethylene oxide (EO) units. To this purpose, literature data dealing with (EO316PO94 + water) and (EO13PO30EO13 + water) mixtures were analyzed. The volume vs. temperature trends were rationalized on the basis of the (unimers + aggregate) equilibrium by taking into account the temperature effect on both the partial molar volumes of the unimeric and the aggregated copolymer as well as the equilibrium constant of micellization. The analysis extended to the expansibility allowed to quantify the contribution for the shift …