Hossein Karami – författare

Power Transformer Online Monitoring using Electromagnetic Waves explores how to use electromagnetic wave technology and remote monitoring systems to predict and localize costly mechanical defects and partial discharge challenges in high voltage transformer windings. This innovative approach brings several potential benefits compared with conventional techniques such as frequency response analysis, including impermeability to ambient noise, and online implementation capability. This book reviews both fundamental and state-of-the-art information about all key aspects of condition monitoring using electromagnetic waves. It addresses the simulation of power transformers in CST environment while also explaining the theoretical background of boundary conditions used. Chapters review how to achieve practical online implementation, reliable diagnosis, asset management and remnant life estimation. Partial discharge detection is also discussed.??

Discusses the advantages and disadvantages of the electromagnetic wave method in comparison with classical monitoring methods Explores how to design and implement power transformer monitoring systems using electromagnetic waves Investigates partial discharge detection and localization in addition to the partial discharge emission effects on defect detection

Fairness and ethicality have been at the center of the debates on the appropriate use of educational tests since the 1960s. Particularly in high-stakes contexts, it is clear that fairness should be a major concern to both the test developers, and to those being tested, given that the fairness of a test is so intertwined with its validity. Fairness Issues in Educational Assessment aims to shed more light on the issue and bring to sight some of the ways in which test fairness can be addressed. The contributions, written by some of the most prominent figures in educational assessment, address both theoretical and practical aspects of test fairness. The wealth of ideas presented here will be valuable to novice researchers and help them appreciate both the joy and complexity of conducting fair educational measurement. This book was originally published as a special issue of Educational Research and Evaluation.