Recent measurements demonstrate that the "background" stratospheric aerosol layer is persistently variable rather than constant, even in the absence of major volcanic eruptions.
This excitation is achieved without requiring the input to be persistently exciting; rather, the probing objective is based on an exact formulation of the expected value of the output error at the first time stage.
This excitation is achieved without requiring the input to be persistently exciting; rather, the excitation objective is formulated such that excitation takes place only in the absence of sufficiently informative data, while a trade-off between excitation and output regulation is maintained.
The New England Patriots are not in action until 4.25pm ET, but I nevertheless wanted to raise a question that has cropped up rather persistently on sports networks over the last seven days.
Though the slow movement of Schubert's final piano sonata does haunt two of the songs rather persistently, many of the other quotations are much less intrusive, and combined with the restraint of Nyman's instrumental writing, for a typical band of strings, saxophones, brass and piano, the whole work has a quiet seriousness that is very effective.
Therefore, occupational mismatch concurring with unskilled employment may prove to be rather persistently detrimental with regards to the future labour market positioning of young adults (see e.g. Baert et al. 2013; Pollmann-Schult and Büchel 2002; Scherer 2004) and thereby severely hamper their social positioning (see e.g. Blossfeld 1985; Bukodi and Dex 2010).
A galvanizing conversation starter since its Cannes premiere, Blue Is the Warmest Color has rather persistently been positioned as a "lesbian" film, particularly in the popular press.
The three year periods were chosen to identify persistently active authors rather than those who by some chance event had several articles published all in the same year but were not productive outside that single year.
When corrupt politicians persistently embezzle public funds rather than produce proper policies, the result is a stagnant economy and its attendant human misery — high unemployment and massive poverty.
She is associated with the camp of so-called inflation doves at the Fed, who tend to emphasize the persistently high unemployment rate rather than the risks of setting off inflation.
