Search results for "Semi"
showing 10 items of 3894 documents
Conclusione
2010
Forme di costruzione dell’identità dei luoghi: il caso di Erice nelle guide turistiche
2006
Verso una guida transmediale: Turisti per caso
2010
Viaggiare: istruzioni per l'uso. Semiotica delle guide turistiche
2010
Guided Wave Techniques for Damage Detection in Composite Aerospace Structures
2018
Composite materials make up an increasing portion of today’s aerospace structures (see, e.g. Boeing 787 and Airbus 380). These aircrafts’ fuselage, for example, is composed of a laminated composite skin connected to composite stringers and C-frames. Of primary importance is the detection of damage in these built-up structures, whether caused by the manufacturing process or in service (e.g. impacts). A related issue is the characterization of the composite (visco)elastic mechanical properties, that can also be related to the quantification of potential damage. Guided elastic waves propagating in the ~100s kHz regime lend themselves to provide the necessary sensitivity to these two conditions…
Contemporary spatial and environmental factors determine vascular plant species richness on highly fragmented meadows in Central Finland
2018
Context Habitat loss is a major threat to biodiversity. It can create temporal lags in decline of species in relation to destruction of habitat coverage. Plant species specialized in semi-natural grasslands, especially meadows, often express such extinction debt. Objectives We studied habitat loss and fragmentation of meadows and examined whether the changes in meadow coverage had caused an extinction debt on vascular plants. We also studied whether historical or present landscape patterns or contemporary environmental factors were more important determinants of species occurrence. Methods We surveyed the plant species assemblages of 12 grazed and 12 mown meadows in Central Finland and dete…
First measurement of the Sivers asymmetry for gluons using SIDIS data
2017
The Sivers function describes the correlation between the transverse spin of a nucleon and the transverse motion of its partons. It was extracted from measurements of the azimuthal asymmetry of hadrons produced in semi-inclusive deep inelastic scattering of leptons off transversely polarised nucleon targets, and it turned out to be non-zero for quarks. In this letter the evaluation of the Sivers asymmetry for gluons in the same process is presented. The analysis method is based on a Monte Carlo simulation that includes three hard processes: photon-gluon fusion, QCD Compton scattering and leading-order virtual-photon absorption process. The Sivers asymmetries of the three processes are simul…
Event-related brain potential markers of visual and auditory perception: A useful tool for brain computer interface systems.
2022
ObjectiveA majority of BCI systems, enabling communication with patients with locked-in syndrome, are based on electroencephalogram (EEG) frequency analysis (e.g., linked to motor imagery) or P300 detection. Only recently, the use of event-related brain potentials (ERPs) has received much attention, especially for face or music recognition, but neuro-engineering research into this new approach has not been carried out yet. The aim of this study was to provide a variety of reliable ERP markers of visual and auditory perception for the development of new and more complex mind-reading systems for reconstructing the mental content from brain activity.MethodsA total of 30 participants were shown…
"Millasen päivityksen tästä sais?" : elämäjulkaisijuuden kulttuurinen omaksuminen
2015
Yhä useammat meistä napsivat kuvia lapsistaan, lomistaan ja lemmikeistään sosiaaliseen mediaan. Facebook tai oma blogi on avoinna pitkin päivää, ja huomaamme ajattelevamme keskellä elämän tohinaa: ”Millasen päivityksen tästä sais?” Ajatus ei ole edes kovin tietoinen, kun jo alamme sommitella elämän tapahtumia verkossa jaettaviksi mediateksteiksi. Elämäjulkaiseminen on yleistynyt Suomessa 1990-luvun puolivälistä lähtien. Se on kulkenut käsi kädessä internetin laajenemisen ja yhtä helppokäyttöisemmäksi käyvän teknologian kanssa. Samalla olemme omaksuneet elämäjulkaisemisen kulttuurisesti. Sari Östmanin tutkimus tarkastelee tätä kehitystä Mikael Hårdin ja Andrew Jamisonin teknologian kulttuuri…
Oxidation-Induced Changes in the ALD-Al2O3/InAs(100) Interface and Control of the Changes for Device Processing
2018
InAs crystals are emerging materials for various devices like radio frequency transistors and infrared sensors. Control of oxidation-induced changes is essential for decreasing amounts of the harmful InAs surface (or interface) defects because it is hard to avoid the energetically favored oxidation of InAs surface parts in device processing. We have characterized atomic-layer-deposition (ALD) grown Al2O3/InAs interfaces, preoxidized differently, with synchrotron hard X-ray photoelectron spectroscopy (HAXPES), low-energy electron diffraction, scanning tunneling microscopy, and time-of-flight elastic recoil detection analysis. The chemical environment and core-level shifts are clarified for w…