Search results for "9"
showing 10 items of 40453 documents
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…
Decoupled control scheme of grid-connected split-source inverters
2017
Grid-connected power conversion systems for renewable energy sources must fulfill several requirements, e.g., the high efficiency, the reduced cost and complexity, and, quite often, the boost capabilities that is usually achieved using a front-end dc–dc boost converter before the inversion stage, leading to a two-stage architecture. Meanwhile, single-stage power conversion systems, which perform the boosting operation within the inversion one, offer some potential advantages, in terms of reducing the complexity and the volume of the whole system. Among several proposed options, the split-source inverter (SSI) has been recently proposed by Abdelhakim et al. as an alternative option with some…
Quantification of Platinum in Edible Mushrooms Using Voltammetric Techniques
2021
Edible mushrooms are a food source with interesting nutritional values. The chief objective of this research was to develop a consistent method for the quantitative ultra-trace analysis of Pt in mushrooms, which is complex because it cannot be readily quantified by common analytical procedures. This research is one of the first analytical methods to establish Pt amount in these vegetables. In this research, 28 different edible mushroom samples from Italy were investigated. Determination of Pt in mushrooms was completed using Differential Pulse Voltammetry (DPV). In this study, we applied the standard addition method because there are no certified reference mushrooms containing platinum grou…
Palermo
2021
Il capitolo analizza la distribuzione del disagio sociale nelle aree suburbane della città e si concentra sulla relazione fra disagio sociale e comportamento elettorale.
Cybersecurity Attacks on Software Logic and Error Handling Within ADS-B Implementations: Systematic Testing of Resilience and Countermeasures
2022
Automatic Dependent Surveillance-Broadcast (ADS-B) is a cornerstone of the next-generation digital sky and is now mandated in several countries. However, there have been many reports of serious security vulnerabilities in the ADS-B architecture. In this paper, we demonstrate and evaluate the impact of multiple cyberattacks on ADS-B via remote radio frequency links that affected various network, processing, and display subsystems used within the ADS-B ecosystem. Overall we implemented and tested 12 cyberattacks on ADS-B in a controlled environment, out of which 5 attacks were presented or implemented for the first time. For all these attacks, we developed a unique testbed that consisted of 1…
“The Evils Which Have Arisen in My Country” : Mary Power Lalor and Active Female Landlordism during the Land Agitation
2021
The British journalist and author, Frederic Whyte, reminisced fondly about his childhood trips to County Tipperary, presenting an idealistic image of Mary Frances Power Lalor, one of the most active of Irish landowners during the later Victorian period. peerReviewed
Dialogioppiminen ryhmä- ja yksilötasoilla hoitotyön kontekstissa
2000
Artikkelissa dialogioppimista on tulkittu hoitotyön oppimisen ja opettamisen erilaisissa käytänteissä. Käsitys dialogista perustuu Bahtinin puheen teoriaan, jossa näkökulmien vastakkaisuutta pidetään dialogin syntymisen ehtona. Käsitys oppimisesta perustuu kontekstuaaliseen näkemykseen, jossa oppimisen kohteeksi rajataan arkitodellisuus ja sieltä nousevat ongelmat. Koska arjen ristiriitaiset käytänteet kiinnittyvät erilaisiin ajattelu- ja toimintamalleihin, puheesta on etsitty historiallisia ääniä, vakiintuneiksi muodostuneita hoitamisen ja oppimisen muotoja. Tarkoituksena on ollut selvittää, millaisten dialogien avulla näistä erilaisista äänistä rakennetaan jaettua ja yksilöllistä tietämys…
Koronan kohtaamat
2020
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Interaction between students and class teachers in vocational education and training: ‘Safety distance is needed’
2020
Interaction between students and teachers is fundamental and has therefore been widely studied in education. However, there have been few studies on intensive spe-cial support being provided to vocational education and training (VET) students. Firstly, the focus of this article is on students’ perceptions of interactions with their class teachers. Students (aged 17–34 years) from four Finnish vocational institutions providing intensive special support were interviewed. According to the findings, the demands students placed on their class teachers and for interactions with them were modest and their perceptions of both were favourable. Interactions seemed to be study-orientated and class tea…
Developing Future Physical Education Teachers' Intercultural Competence: The Potential of Intertwinement of Transformative, Embodied, and Critical Ap…
2021
Purpose: This article is based on a study that explored learning processes related to intercultural competence of PE teacher trainees. The context of the study was the Faculty of Sport and Health Sciences at the University of Jyväskylä, Finland. The study was conducted in connection to two courses that focused on equality in physical education and sport in 2020–2021.Methods: Adopting an interpretive, as well as a critical approach, the authors focused on how the students described their conceptions and learning experiences. Based on their analysis they have then aimed to shed light on how interculturality, equality, equity, and diversity may be addressed in higher education in a more profou…