Looking back on experienced teachers’ reflections: how did pre-service school practice support the development of self-efficacy?

This research focuses on experienced Estonian teachers’ pre-service school practice. Each one of the 19 teachers interviewed in this study had over 25?years of professional experience. We were interested in their recollections of their pre-service school practice and the impact that their experience had on them professionally. The results indicate the importance of support systems and a cooperative atmosphere in the school, both of which enable a beginning teacher’s self-efficacy. Despite the lack of explicit support structures from the 1960s to the 1980s, implicit support existed and played an important role in facilitating the development of student teachers’ self-efficacy.     

Age of Bilingual Exposure Is Related to the Contribution of Phonological and Semantic Knowledge to Successful Reading Development

Bilingual children's reading as a function of age of first bilingual language exposure (AoE) was examined. Bilingual (varied AoE) and monolingual children (N = 421) were compared in their English language and reading abilities (6–10 years) using phonological awareness, semantic knowledge, and reading tasks. Structural equation modeling was applied to determine how bilingual AoE predicts reading outcomes. Early exposed bilinguals outperformed monolinguals on phonological awareness and word reading. Phonology and semantic (vocabulary) knowledge differentially predicted reading depending on the bilingual experience and AoE. Understanding how bilingual experiences impact phonological awareness and semantic knowledge, and in turn, impact reading outcomes is relevant for our understanding of what language and reading skills are best to focus on, and when, to promote optimal reading success.     

Cochannel interference effect on BEP performance of SSC receiver in correlated Rician fading

We study the performance of dual branch switch and stay combining (SSC) diversity receivers operating over correlated Rician fading channels, in the presence of correlated Rayleigh distributed cochannel interference (CCI). Fast convergent infinite series representations for both the joint probability density function (PDF) of the SSC input signal-to-interference ratios (SIRs) and the PDF of the SSC output SIR are derived. The last one is applied to semi-analytically study the average bit error probability (ABEP) of differential binary phase shift keying (DBPSK). Furthermore, the optimum switching threshold in the sense of minimum ABEP is obtained numerically and the effects of fading severity and branch correlation on both ABEP and optimum switching threshold are investigated. Numerical and simulation results are presented to support the mathematical analysis.     

STIMULATORS AND INHIBITORS OF SCIENTIFIC ACTIVITY IN JUNIOR AND SENIOR RESEARCH WORKERS

Subjects evaluated the frequency of their participation in activities typical of the scientist's work, the emotional value of these activities (pleasant‐unpleasant) and their stimulating value (motivating‐demotivating). The main stimulator of effective or potentially effective scientists was cognitive problem exploration, which clearly discriminated between professors and associate professors. Moreover, a high sensitivity for collative variables (especially novelty) characterized the potentially effective group. The motivation of the effective group was mainly intrinsic. The main inhibitors found in each group were depression, ineffectiveness of work, excessive organizational duties and time pressure. Effective scientists could work productively despite the negative influences of external circumstances. Both ineffective and potentially effective scientists were more dependent on aspects of the practical setting, especially other people's opinions.     

Maintenance and non-maintenance of community language in immigrant families: the case of Polish parents in the UK

ABSTRACT

This paper examines Polish immigrant parents’ perceptions of their community language value, the factors that shape their approaches to children’s language education, and the different outcomes on the spectrum of language maintenance/non-maintenance they achieve. It focuses on the empirical findings and interprets them with reference to Bourdieu’s theory of practice. It argues that a better understanding of migrants’ diverse experiences can be aided by an analysis of capital interactions and transformations in response to the socio-cultural environment. At the same time, it suggests that the negative impact of anti-migration socio-political structures and discourses on language practices should not be assumed.     

Where and how early career researchers find scholarly information

This article presents findings from the first year of the Harbingers research project started in 2015. The project is a 3‐year longitudinal study of early career researchers (ECRs) to ascertain their current and changing habits with regard to information searching, use, sharing, and publication. The study recruited 116 researchers from seven countries (UK, USA, China, France, Malaysia, Poland, and Spain) and performed in‐depth interviews by telephone, Skype, or face‐to‐face to discover behaviours and opinions. This paper reports on findings regarding discovery and access to scholarly information. Findings confirm the universal popularity of Google/Google Scholar. Library platforms and web‐scale discovery services are largely unmentioned and unnoticed by this user community, although many ECRs pass through them unknowingly on the way to authenticated use of their other preferred sources, such as Web of Science. ECRs are conscious of the benefits of open access in delivering free access to papers. Social media are widely used as a source of discovering scholarly information. ResearchGate is popular and on the rise in all countries surveyed. Smartphones have become a regularly used platform on which to perform quick and occasional searches for scholarly information but are only rarely used for reading full text.     

Early career researchers and their publishing and authorship practices

This study presents findings from the first year of the Harbingers research project, a 3‐year longitudinal study of early career researchers (ECRs), which sought to ascertain current and changing habits in scholarly communication. The study recruited 116 science and social science ECRs from seven countries who were subject to in‐depth interviews, and this paper reports on findings regarding publishing and authorship practices and attitudes. A major objective was to determine whether ECRs are taking the myriad opportunities proffered by new digital innovations, developing within the context of open science, open access, and social media, to publish their research. The main finding is that these opportunities are generally not taken because ECRs are constrained by convention and the precarious employment environment they inhabit and know what is best for them, which is to publish (in high impact factor journals) or perish.     

Approach for electrodynamic force for compensation in low voltage circuit breaker WP 630-1.2 type

Undesirable repulsive force between contact members due to both a current path shrink near a real contact area and/or so-called pinch effect is particularly onerous for power switch applications, and results in either contact floating or bouncing which are associated with an electric arc following contact welding. This problem is of great importance for any circuit breaker especially for compact low voltage vacuum circuit breakers. To avoid contact floating at closure and during any inrush current under short circuit conditions, the electrodynamic repulsive force can be employed successfully if we use a special compensation system flexibly combined with the contact itself. However to select and design the compensation system properly, its efficiency has to be known. This paper presents an approach to obtain the electrodynamic force value depending on different shaped (rectangular, square, circle and arch) copper plates used in the compensator by using ANSYS for current values 40 kA RMS. Curve-fitting was done according to the calculating results, the optimization designing of compensation unit is based on them.