Investigating Change in Field Sites Through Mentor and Candidate Dialogues

The work of teacher candidates matters in particular ways to the quality of children's experiences and environments when they teach in preschools. We conducted a mixed-method study with survey, interviews, focus groups, and photographic documentation of classroom spaces, and theorized findings through Bahktin's dialogism and the notion of figured worlds. Ranked survey items confirmed that the physical environments of preschools were shaped by projects stemming from university courses. Although the physical traces of candidates' work were short-lived, ending with student teaching, the classroom climate changes garnered positive social and emotional supports to children in situ that made lasting changes in children's places in the social community of preschool. Dialogues allowed mentors and candidates to reinterpret their images of children and in some cases renew instructional approaches and act against standardized forms of accountability, which limited curriculum and pedagogic choice.     

Internationale Konferenz über Schulbuchverbesserung

Ohne Zusammenfassung     

Critiquing Inequality in Society and on Campus: Peers and Faculty Facilitate Civic and Academic Outcomes of College Students

Research in Higher Education - Guided by Critical Consciousness Theory and the Multicontextual Model for Diverse Learning Environments, this research explored whether a critical reflection of...     

X-ray radiography and tomography for monitoring the penetration depth of consolidants in Opuka – the building stone of Prague monuments

Stone consolidation is one of the major restoration treatments used for historical monuments preservation. A natural stone is a complicated heterogeneous porous system making the process of consolidation dependent on many variables. In practical restoration aims, for a given stone type, the selection of a suitable consolidant and consolidation conditions therefore remains a complex issue. The impregnation depth is a key factor for the assessment of the treatment efficiency. The combination of state-of-the-art hybrid pixel semiconductor detectors with newly available micro-focus X-ray sources makes possible to apply X-ray radiography, an ideal non-destructive tool, for penetration depth monitoring. In this study, high-resolution X-ray radiography is used for monitoring the penetration depth of organosilicon consolidants in the Opuka stone. The penetration depth has been evaluated in relation to the time of consolidation, stone porosity and consolidation mixtures properties. The exact influence of the X-ray contrast agent on the consolidation depth has been investigated as well. The information obtained provides supplementary knowledge on the suitability of investigated products for the treatment of this type of stone. In our study, the capabilities of X-ray radiography have been demonstrated on X-ray radiography simple projections, high-resolution computed tomography (CT) as well as on the dynamic processes monitoring. The results thus can serve also as an instrumental and methodological example applicable for consolidation monitoring of other stone types.