Leena Lehti, Janne Keränen, Saku Suuriniemi, Timo Tarhasaari and Lauri Kettunen
The authors aim to search for a practical and accurate way to get good loss estimates for coil filaments in electrical machines, for example transformers. At the moment including…
Abstract
Purpose
The authors aim to search for a practical and accurate way to get good loss estimates for coil filaments in electrical machines, for example transformers. At the moment including loss estimations into standard finite element computations is prohibitively expensive for large coils.
Design/methodology/approach
A low-dimensional function space for finite element method (FEM) is introduced on the filament-air interface and then extended into the filament to significantly reduce the number of unknowns per filament. Careful choice of these extensions enables good loss estimate accuracy. The result is a system matrix assembly block that can be used verbatim for all filaments, further reducing the cost. Both net current and voltage per length of the filament are readily available in the problem formulation.
Findings
The loss estimates from the developed model agree well with traditional FEM and the computation times are faster.
Originality/value
To produce accurate loss estimates in large coils, the low-dimensional function space is constricted on the filament boundaries. The proposed method enables electrical engineers to compute the ohmic losses of individual conductors.
Details
Keywords
Tiina A. Tuononen, Milka Kauhanen, Anna Liisa Suominen and Marja-Leena Hyvärinen
This study aims to explore what kind of perceptions dental students at graduation stage have on leadership and work communities, and themselves as leaders and work community…
Abstract
Purpose
This study aims to explore what kind of perceptions dental students at graduation stage have on leadership and work communities, and themselves as leaders and work community members after completing a leadership course tailored for them.
Design/methodology/approach
The research material comprised reflective essays written by fifth-year dental students who had participated in a leadership course. The essays were analyzed using qualitative content analysis.
Findings
Most students reported that they had not considered seeking a leadership position before the course, but their views of leadership had grown more positive as a result of completing the course. Students perceived interpersonal communication competence as the most important factor for leaders, the whole work community and for themselves. They assessed that their biggest strengths were found in this area. The biggest challenges in adapting to a work community concerned the students’ professional identities, which were still taking shape at the time of graduation.
Originality/value
The need for leaders in health-care professions is growing due to ongoing reforms, multidisciplinary teamwork, the development of new technologies and patient demands. Therefore, undergraduate leadership education is needed to ensure that students have knowledge of leadership. Graduating dental students’ perceptions concerning leadership and work communities have not been widely explored. Students’ perceptions of leadership were positive after the course and helped students to realize their own potential in this area.
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Keywords
Academia remains a male-dominated occupational realm, even though women have made great gains as actors in higher education. The interconnections of work-related and…
Abstract
Academia remains a male-dominated occupational realm, even though women have made great gains as actors in higher education. The interconnections of work-related and family-related discrimination experiences and work-related and family-related support are analyzed, drawing on over 100 semi-structured interviews with and written accounts of academic women in 11 Finnish universities from all major disciplinary fields. Finland provides an interesting research context, characterized by relatively high gender equality in both academia and society more generally. Exploring academic women in this setting reveals several paradoxes, namely those of: feminization of academia; family-friendly policies; academic motherhood; and academic endogamy.