The paper provides extensive and systematic investigations of k-potent complex matrices, with a particular attention paid to tripotent matrices. Several new properties of k-potent matrices are identified. Furthermore, some results known in the literature are reestablished with simpler proofs than in the original sources and often in a generalized form.

In this study, the structure of trailing edge vertical axis offshore wind turbine blade is modified. First, according to method parameterization, model established, and a series characteristics are obtained. Second, we add flaps with different lengths NACA0021 airfoil obtain dynamic characteristics. The angle additional Finally, simulation for modified reestablished, variable performance studie...

The ecosystems within the area that burned in the Hayman Fire have a long history of fire (see part 1 of this chapter). It follows, therefore, that all of the native species and populations in this area probably have one or more mechanisms for enduring fire or becoming reestablished after fire and that no native species is likely to become extinct as a result of the direct effects of the Hayman...

Pine wilt disease (PWD) has caused significant Masson pine mortality in the Three Gorges reservoir region in central China. In this study, five uniform Masson pine stand types infected by PWD were selected and surveyed on slopes and aspects with similar environmental conditions. In sites that had been infected, soil bulk density was reduced, and the difference among the groups was statistically...

Since the 1700 CE Cascadia Subduction Zone earthquake and associated coseismic subsidence tsunami, vegetated intertidal habitats have reestablished across Pacific Northwest estuaries, yet timescales mechanisms of recovery are uncertain. We investigated timescale salt marsh reestablishment in Netarts Bay, Oregon following using a combination excess 210Pb, 14C, stratigraphic constraints, Bayesian...

The functional trait-based approach is increasingly used to predict responses of ecological communities to disturbances, but most studies target a single taxonomic group. Here, we assessed the resilience of a forest ecosystem to an overabundant herbivore population by assessing changes in 19 functional traits for plant, 13 traits for ground beetle and 16 traits for songbird communities after si...

For 16 years, Costa Rica was the only country in the world that banned IVF, after it had been successfully conducted from 1995 to 2000. It also has been the only country that banned IVF based on the argument that it protects the embryo. After years of conflict, the prohibition has finally been lifted and the first baby girl was born in March 2017. This paper recounts the judicial and legal stru...