Results 101 to 110 of about 275,635 (230)
Applied SciencesPartial discharge (PD) is a primary factor leading to the deterioration of insulation in electrical equipment. However, it is hard for traditional methods to precisely extract PD signals in increasingly complex engineering environments.
Jun Zhong, Zhenyu Liu, Xiaowen Bi
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Moments and Semi-Moments for fuzzy portfolios selection [PDF]
The aim of this paper is to consider the moments and the semi-moments (i.e semi-kurtosis) for portfolio selection with fuzzy risk factors (i.e. trapezoidal risk factors).
Christian Tassak +2 more
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British Educational Research Journal, EarlyView.Abstract The current study aimed to investigate whether negative student–teacher relationships and within‐class perceptions of the class climate at the individual level, and positive class climates at the classroom level in fifth grade, were associated with traditional bullying and cyberbullying perpetration 1 year later, in sixth grade, in a sample of
Robert Thornberg +3 more
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Exploring personality traits and mental toughness in early career teachers in England
British Educational Research Journal, EarlyView.Abstract While some teachers thrive, in similar circumstances other teachers encounter considerable difficulties. This is particularly concerning in England, where high numbers of teachers with five or fewer years' experience leave the profession to take another job outside of teaching, and pupil numbers are outpacing teacher numbers (Bryan & Price ...
Joanne E. Taberner, Sarah MacQuarrie
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SPECTRAL MOMENTS OF FRICATIVE CONSONANTS IN SERBIAN (AN ACCOUNT OF FEMALE SPEAKERS’ PRODUCTION)
Filolog, 2020 This paper deals with the measurement of spectral moments of Serbian fricatives. The four spectral moments: centre of gravity, spectral variance, skewness, and kurtosis were measured at the onset of the fricative, on the stable-state part and at the ...
Borivoje Petrović
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Journal of the Royal Statistical Society Series B: Statistical Methodology, 1964 Summary This note “rediscovers” the original interpretation of kurtosis as an indicator of “a prominent peak and a prominent tail” on the density curve. A formal proof that such curves have indeed relatively high fourth moments is given. A comment is made concerning the recent decline of this correct classical interpretation.
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Business Strategy and the Environment, EarlyView.ABSTRACT This study examines the impact of firm‐level climate risk on stock price informativeness (SPI) through the integrated lens of stakeholder–shareholder theory. Using a global unbalanced panel of 73,770 firm‐year observations across 38 countries (2000–2020), we find that higher carbon emissions significantly reduce SPI, reflecting increased ...
Rawinder Kaur +4 more
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Kurtosis transformation and kurtosis ordering [PDF]
Leptokurtic distributions can be generated by applying certain non-linear transformations to a standard normal random variable. Within this work we derive general conditions for these transformations which guarantee that the generated distributions are ...
Fischer, Matthias J., Klein, Ingo
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A Novel FastICA Method for the Reference-based Contrast Functions [PDF]
, 2014 This paper deals with the efficient optimization problem of Cumulant-based contrast criteria in the Blind Source Separation (BSS) framework, in which sources are retrieved by maximizing the Kurtosis contrast function.
Jian, W. +5 more
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The Annals of Mathematical Statistics, 1948 It is well known that, if the fourth moment about the mean of a frequency distribution equals the square of the variance, then the frequencies are piled up at exactly two points, namely, the two points that are one standard deviation away from the mean.
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