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Singular spectrum analysis (SSA) is considered from a linear invariant systems perspective. In this terminology, the extracted components are considered as outputs of a linear invariant system which corresponds to finite impulse response (FIR) filters. The number of filters is determined by the embedding dimension.We propose to explicitly define the frequency response of each filter responsible for the selection of informative components. We also introduce a subspace distance measure for clustering subspace models. We illustrate the methodology by analyzing lectroencephalograms (EEG). FCT - PhD scholarship (SFRH/BD/28404/2006) FCT - PhD scholarship (SFRH/BD/48775/2008)

Given the rapid integration of 3D printing into schools and universities, educators must equip themselves with new skills, class structures, procedures, and thinking, many of which may be challenging for teachers with non-technical expertise. Training in 3D printing and computer-aided design traditionally requires extended instruction and experience, which is unlikely to be practical for school teachers. This chapter explores how effective up-skilling can occur through one-day professional development workshops, where educators from all areas of teaching work together during intensive hands-on sessions to understand the foundational principles of 3D printing, become aware of the opportunities and limitations, and develop strategies together for implementing it into their curriculums. Through examination of the literature around 3D printing adoption in Australian schools, and an analysis of peer-reviewed research into short-format professional development, this chapter will help inform researchers, teachers, and those developing higher-level curriculum directives around 3D printing in schools.