Search results for "SCOPE"
showing 10 items of 2420 documents
Experiencia docente iberoamericana sobre metodología de la investigación a través de videoconferencia
2013
Les noves tecnologies de la informació i la comunicació (TIC) són eines valuoses que utilitzades correctament afavoreixen el procés 'ensenyament- aprenentatge en tots els nivells del sistema educatiu . En els últims anys l'ús de la videoconferència com a eina de les TIC en el sector universitari ha vingut en augment a causa del potencial educatiu i social de connectar processos i experiències entre professors i estudiants situats en diferents parts del món. La videoconferència ha transformat la forma en què la pedagogia i l'aprenentatge es duen a terme a l'aula universitària . L'article descriu una experiència educativa entre dues països iberoamericans sobre la implementació de l´assignatur…
Astronomiskajam tornim - 150
2019
Latvijas Universitātes Muzeja virtuālā izstāde „Astronomiskajam tornim – 150” veltīta labi pamanāmai Latvijas Universitātes galvenās ēkas iezīmei – Astronomiskajam tornim uz tās jumta. 2019. gadā ēkai un arī tornim apritēja 150 gadi. Rīgas Politehnikuma laikos te strādājuši dažādi ārzemju profesori, kas veica astronomiskus novērojumus un mācīja studentus. Nodibinoties Latvijas Universitātei, tornis kļuva par Astronomiskās observatorijas sastāvdaļu. Kopš 1986. gada te notiek regulāri debess spīdekļu demonstrējumi, skatītas komētas, Saules aptumsumi un citas samērā retas astronomiskas parādības. Astronomiskais tornis ir kā logs uz debesīm vairāk nekā 150 gadu garumā. Mainījušies teleskopi, no…
Astronomiskajam tornim - 150
2019
Astronomiskais tornis uz Latvijas Universitātes galvenās ēkas jumta jau 150 gadus kalpo kā logs uz kosmosu. 19. gadsimtā te veikti zinātniski novērojumi, 20. gadsimtā tornī uzstādīto Heides teleskopu izmantoja studentu apmācībai un debess spīdekļu demonstrēšanai. No 1986. gada zvaigžņotās debess demonstrējumi notiek ļoti aktīvi, nomainījušies trīs teleskopi.
Atomic-scale magnetic domain walls in quasi-one-dimensional Fe nanostripes.
2001
Fe nanostripes on W(110) are investigated by Kerr magnetometry and spin-polarized scanning tunneling microscopy (SP-STM). An Arrhenius law is observed for the temperature dependent magnetic susceptibility indicating a one-dimensional magnetic behavior. The activation energy for creating antiparallel spin blocks indicates extremely narrow domain walls with a width on a length scale of the lattice constant. This is confirmed by imaging the domain wall by SP-STM. This information allows the quantification of the exchange stiffness and the anisotropy constant.
Maximum Likelihood Estimation and non-linear least squares fitting with Levenberg-Marquardt Algorithm implementation in FPGA devices for high resolut…
2012
This work compares two possible solutions to achieve a higher resolution in a hodoscope based on Plastic Scintillating Fibers (PSF) by obtaining the point of maximum incidence of the radioactive beam. The two fitting algorithms proposed have been tested and implemented in Field Programmable Gate Array (FPGA) devices. On one hand, a probabilistic model based on the Maximum Likelihood Estimation (MLE) and on the other hand, non-linear least-squares fit with the Levenberg-Marquardt Algorithm (LMA).
Investigation of the superstructure of native collagen by a combination of small angle X-ray scattering, electron microscopy and light diffraction
1978
It is shown that there exists a direct correlation between the light diffraction pattern of an electron-microscopical picture and the X-ray small angle scattering. By this means it can be proved for native collagen prepared by a special method that the density pattern of stained samples imaged in the electron microscopy is identical with the density pattern available from moist fibres. The reflex intensities of the small angle X-ray scattering are taken for calculating the density structure whereby the necessary phases are delivered by the electron microscopic examination combined with light diffraction.
Measurement of the group velocity of light in sea water at the ANTARES site
2012
The group velocity of light has been measured at eight different wavelengths between 385 nm and 532 nm in the Mediterranean Sea at a depth of about 2.2 km with the ANTARES optical beacon systems. A parametrisation of the dependence of the refractive index on wavelength based on the salinity, pressure and temperature of the sea water at the ANTARES site is in good agreement with these measurements.
Fluorescent metal-based complexes as cancer probes.
2020
Abstract The ability to track drugs inside of cells and tumours has been highly valuable in cancer research and diagnosis. Metal complexes add attractive features to fluorescent drugs, such as targeting and specificity, solubility and uptake or photophysical properties. This review focuses on the latest fluorescent metal-based complexes, their cellular targets, photophysical properties and possible anticancer effects.
Comparing the outcomes of two different approaches to CEFR-based rating of students’ writing performances across two European countries
2018
This study investigated to what extent two teams of experienced raters from different European countries (Finland and Austria), using their own CEFR-based rating scale (one holistic and one analytic), agreed on the CEFR level of students’ writing performances. Both teams rated one hundred performances written by Austrian secondary school students based on two tasks. The Finnish raters (N = 3) applied a holistic CEFR-linked rating scale consisting of verbatim CEFR descriptors developed in Finland, while the Austrian team (N = 6) used an analytic CEFR-linked rating scale consisting of four criteria developed in Austria. The ratings were analysed using the Rasch model. Although there were indi…
Student-initiated multi-unit questions in EMI classrooms
2021
This conversation analytic study investigates student-initiated multi-unit questions (MUQs) in whole class interaction. Based on a corpus of 30 hours of videotaped interactions from teacher education classrooms in an English-medium instruction university, we demonstrate that students use MUQs to introduce topics, either by recontextualizing some aspect of the prior topic, or alternatively, without these cohesive ties, which requires more interactional work to achieve intersubjectivity. Findings reveal that MUQs render student professional concerns more relevant and salient, foregrounding those inquiries as a space for launching topics. Students bring up issues such as ways of handling parti…