Notch Filtering Suitable for Real Time Removal of Power Line Interference

This paper presents a high performance notch filtering for real time suppression of power line interference in a general signal. The disturbing signal is suppressed using an optimal notch FIR filter with tunable notch frequency. The tuning of the filter preserves its selectivity, most importantly the specified attenuation at the notch frequency. One example and two Matlab functions demonstrate the performance, robustness and usefulness of the proposed procedure for the design and tuning of optimal notch FIR filters suitable in the real time notch filtering

Nonmonotonic band gap evolution in bent phosphorene nanosheets

Nonmonotonic bending-induced changes of fundamental band gaps and quasiparticle energies are observed for realistic nanoscale phosphorene nanosheets. Calculations using stochastic many-body perturbation theory (sGW) show that even slight curvature causes significant changes in the electronic properties. For small bending radii (< 4 nm) the band-gap changes from direct to indirect. The response of phosphorene to deformation is strongly anisotropic (different for zig-zag vs. armchair bending) due to an interplay of exchange and correlation effects. Overall, our results show that fundamental band gaps of phosphorene sheets can be manipulated by as much as 0.7 eV depending on the bending direction.Comment: 23 pages, 5 figures, 3 table

A critical analysis of the Physical Education curriculum in the Czech Republic

This monograph reviews the PE curriculum in the Czech Republic. It presents research into the quality of the Czech PE curriculum and makes recommendations regarding its redesign. It targets the scientific community and experts in the field and seeks to enrich international research on the PE curriculum and update the knowledge base of curriculum study. The text should be of general value and of particular relevance to any future change of the PE curriculum in the Czech Republic. The first section of the monograph focuses on curriculum theory; the term `curriculum' is defined and its structure described, some basic terminology regarding curriculum change is explained, some aspects of a quality curriculum are discussed, and the various concepts that can underpin a PE curriculum are identified. The history of PE in the Czech Republic sets the scene for the research section of the monograph, which describes predominantly the author's PE curriculum research over the last decade. In the following chapters the current PE curriculum in the Czech Republic is reviewed based on research findings and recommendations made regarding the revision of the PE curriculum in the Czech Republic. Finally, the dichotomies that characterize research in this area are discussed