Search results for "init"

Efficient Time Integration of Maxwell's Equations with Generalized Finite Differences

2015

We consider the computationally efficient time integration of Maxwell’s equations using discrete exterior calculus (DEC) as the computational framework. With the theory of DEC, we associate the degrees of freedom of the electric and magnetic fields with primal and dual mesh structures, respectively. We concentrate on mesh constructions that imitate the geometry of the close packing in crystal lattices that is typical of elemental metals and intermetallic compounds. This class of computational grids has not been used previously in electromagnetics. For the simulation of wave propagation driven by time-harmonic source terms, we provide an optimized Hodge operator and a novel time discretizati…

Total Structure and Electronic Structure Analysis of Doped Thiolated Silver [MAg24(SR)18]2– (M = Pd, Pt) Clusters

2015

With the incorporation of Pd or Pt atoms, thiolated Ag-rich 25-metal-atom nanoclusters were successfully prepared and structurally characterized for the first time. With a composition of [PdAg24(SR)18](2-) or [PtAg24(SR)18](2-), the obtained 25-metal-atom nanoclusters have a metal framework structure similar to that of widely investigated Au25(SR)18. In both clusters, a M@Ag12 (M = Pd, Pt) core is capped by six distorted dimeric -RS-Ag-SR-Ag-SR- units. However, the silver-thiolate overlayer gives rise to a geometric chirality at variance to Au25(SR)18. The effect of doping on the electronic structure was studied through measured optical absorption spectra and ab initio analysis. This work d…

Global, National, or Market? Emerging REDD+ Governance Practices in Mozambique and Tanzania

2016

This article examines emerging governance practices in the REDD (Reducing Emissions from Deforestation and Forest Degradation) initiative. We examine three different general governance practices (neoliberal, post-national, and government-led practices) that have been applied in the interaction between international organizations and two REDD target countries: Mozambique and Tanzania. In these countries, we find that emerging REDD+ governance practices are a mixture of international organizations’ procedural practices and the target country’s established governance practices, whereas neoliberal practices are weakly expressed. These findings call into question the simplified assumption of re…

The Janus face of social innovation in local welfare initiatives

2017

Growth Into Citizenship: Framework for Conceptualizing Learning in NGO Interventions in Sub-Saharan Africa

2018

This article develops a theoretical framework for analyzing adult learning in projects aiming to strengthen citizenship implemented by nongovernmental organizations, especially in the contexts of sub-Saharan Africa. On the basis of a review of international development research, we suggest that a new framework should address the need for a conceptualization of learning as a gradual process and for capturing the gap between ideal models and everyday experiences of citizenship. We argue, building on John Dewey’s philosophy, for a framework of growth into citizenship, and introduce the notions of learning as reorganization of habits and the method of democracy as an avenue for learning as nove…

Negotiating female judoka identities in Greece : A Foucauldian discourse analysis

2015

Abstract Objectives The objectives of this paper are to trace the discourses through which female Greek judokas articulate their sporting experiences and to explore how they construct their identities through the negotiation of sociocultural beliefs and gender stereotypes. Design This article is based on interview data from a larger ethnographic research with women judo athletes, grounded in a cultural praxis framework. Method Ten semi-structured interviews were conducted during fieldwork in Greece. Interview data were analyzed drawing on a Foucauldian approach to discourse analysis. Results We identified four concepts—biology, gender, femininity, and judo/sport—that were central to unearth…

Characterization of lignin enforced tannin/furanic foams

2020

Worldwide, tons of lignin is produced annually in pulping plants and it is mainly considered as a waste material. Usually lignin is burned to produce energy for the pulping reactors. The production of value-added materials from renewable materials like lignin, has proved to be challenging. In this study, the effects of addition of three different types of lignin in the production of tannin/furanic foams is investigated. The foams were matured, first at 373 K and finally carbonized at 1073 K and the properties of them including mechanical strength, specific surface area and pore development are investigated before and after thermal treatment. According to the results, higher mechanical stren…

Awareness and knowledge of cyberethics: A comparative study of preservice teachers in Malta, Norway, and Spain

2021

This paper explores the awareness and knowledge of cyberethics held by pre-service teachers across three European countries. The study was conducted via an online survey and yielded 1,131 responses from pre-service teachers in Malta, Norway, and Spain. The facets of cyberethics included in this study focused on behaving responsibly online, safeguarding privacy, respecting copyright, seeking consent of friends before posting images or videos on social media platforms, and considering their professional identity as future teachers when posting online. The findings indicate that pre-service teachers reported relatively similar levels of competence in applying copyright and respecting privacy r…

Scaffolding through dialogic teaching in early school classrooms

2016

The present study examines what types of dialogic teaching patterns can be identified in the early school years, and how teachers scaffold children's participation and shared understanding through dialogic teaching. Thirty recorded lessons from preschool to Grade 2 in Finnish classrooms were analysed using qualitative content analysis. Two teacher-initiated and two child-initiated dialogic teaching patterns were identified. Teacher's scaffolding in teacher-initiated dialogues was characterised by high responsibility in maintaining the interactional flow and utilisation of diverse strategies. In the child-initiated dialogues, the teachers' scaffolding consisted of listening and inquiry, and …

Quality of educational dialogue and association with students’ academic performance

2018

The study used a mixed-methods approach to examine the associations between the quality of educational dialogue and students' academic performance and to analyse what kinds of dialogic teaching patterns of different levels of quality can be identified in classroom lessons. A total of 158 Grade 6 lessons were video-recorded, and the quality of the educational dialogue was assessed using the Classroom Assessment Scoring System-Secondary (CLASS-S) observational instrument. Multilevel modelling indicated that the quality of educational dialogue was positively associated with students’ academic performance (grades) in language arts and physics/chemistry. Qualitative analysis was subsequently use…