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1 – 3 of 3Maximilian Wiesmüller, Beate Glaser, Franz Fuchs and Oliver Sterz
The purpose of this paper is to report on the simulation of an on-load tap-changer (OLTC) in a power transformer. During design and test of the electrical insulation the…
Abstract
Purpose
The purpose of this paper is to report on the simulation of an on-load tap-changer (OLTC) in a power transformer. During design and test of the electrical insulation the influence of the environment on the OLTC is normally neglected. The authors investigate how large these influences are.
Design/methodology/approach
The environment of the OLTC is taken into account by modeling tap leads in detail as well as transformer windings. The electric fields are computed and resulting breakdown voltages are estimated by using the streamer criterion. The results are compared to the ones of an OLTC without transformer and leads.
Findings
For the investigated typical example the influence of the transformer and the tap leads on the internal OLTC insulation is small enough to neglect them during design optimization and test procedures.
Originality/value
New is the execution of a finite element simulation and breakdown evaluation of such a complex geometric structure as the complete system consisting of OLTC combined with tap leads and windings. Furthermore, standard design and test procedures used by OLTC manufacturers are justified.
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Keywords
Emily J. Solari, Nancy S. McIntyre, Jaclyn M. Dynia and Alyssa Henry
Academic outcomes for individuals with autism spectrum disorder (ASD) remain poor, especially in the area of reading, in particular, reading comprehension. In recent…
Abstract
Academic outcomes for individuals with autism spectrum disorder (ASD) remain poor, especially in the area of reading, in particular, reading comprehension. In recent years, researchers have begun to investigate subcomponent skills of reading comprehension for children with ASD in order to better understand its development and potential interventions to enhance outcomes. This chapter highlights the current knowledge in the field in regards to the key cognitive and language skills associated with reading development for individuals with ASD. These include emergent-literacy skills, word-reading and decoding, reading fluency, oral language, and social cognition. Additionally, the chapter makes suggestions for future research in this area, in particular the need to conduct research to establish evidence-based practices to better support the syndrome-specific reading needs for this population.
Ali Mahjoub and Peter Mathieu Kruyen
This article presents an exploratory, narrative review on job ads research. It aims to explore the key features of job ads that have been investigated in previous…
Abstract
Purpose
This article presents an exploratory, narrative review on job ads research. It aims to explore the key features of job ads that have been investigated in previous researches; the way these features have been investigated; and to draw important lessons that those studies teach us about the impact of job ad features on the target population.
Design/methodology/approach
In this study, the scoping-review procedure is applied. Its systematic procedure enables scholars to provide a broad overview of a topic, map the key concepts underpinning a research area, clarify the conceptual boundaries of a topic, and also to incorporate a numerical summary and qualitative thematic analysis. The review was conducted based on a systematic study of 243 peer-reviewed articles and publications in the grey literature.
Findings
The findings show that seven job ad features seem to have important impacts on (potential) applicants, which we illustrate as a know-how framework. Eight main theories are used, and a wide array of research methods are applied. However, the study concludes that after more than four decades of research, there is still a limited understanding about the concrete effects of job ad features.
Originality/value
This paper synthesizes the existing knowledge, answers three exploratory questions regarding job ad features and draws theoretical and practical lessons from previous studies. In the interest of conducting future studies and providing a research agenda, a typology of theoretical perspectives for the study of job ads is also presented. The article also presents lessons for practitioners by providing a know-how framework on the usage of job ads.
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