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Spectral characteristics of period doubled phonation
The Journal of the Acoustical Society of America, 2006Period doubling (also called subharmonic phonation, bifurcated phonation, F0 series) occurs frequently in both pathological and normal phonation. In this kind of phonation, the most obvious acoustic characteristic is that vocal pulses appear in pairs, with alternate pulses differing in period and often in amplitude. Attempts at modeling period doubling
Jody Kreiman, Bruce R. Gerratt
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GLOBAL CHANGES AND SHOOTING PERIOD CHARACTERISTICS
2023The article reflects the global changes observed on the planet Earth, and the features of the transition period.
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Filter characteristics of periodic chiral layers
Pure and Applied Optics: Journal of the European Optical Society Part A, 1994Filter characteristics of an infinite structure consisting of periodic layers of chiral media are investigated and it is shown that with a proper choice of the ratio of chirality admittances of the two layers in a unit cell, the location of the centre of the pass and stop bands and their bandwidths can be significantly altered and controlled.
D K Kalluri, T C K Rao
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PSYCHOLOGICAL CHARACTERISTICS OF ADOLESCENT PERIOD
This article talks about the psychology of adolescents of the period and the psychological changes that occur in adolescents and their impact on their development.M.M. Gadayeva +1 more
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Calculation of Characteristic Values for Periodic Potentials
Physical Review, 1933Section II reviews the general properties of the solutions of differential equations with periodic coefficients, the socalled Hill and Mathieu equations. In Section III asymptotic formulae for the eigenvalues of the Mathieu equation in the oscillatory region (Eq.
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Entropy, Periodicity, and Graphs with Zero Euler Characteristic
Acta Mathematica Sinica, English Series, 2004zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Lü, Jie, Xiong, Jin Cheng, Chen, Jian
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Alpaca semen characteristics previous to a mating period
Animal Reproduction Science, 2002Increasing the knowledge of the semen characteristics in the alpaca will contribute to understanding one of the many factors that affect the poor fertility rate in this species. Ten adult male alpacas, 2.6-10 years of age, average weight 64.7 +/- 4.7 kg were used.
Flores, Paloma +4 more
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Characteristic matrices of layered periodic structures
2015 Days on Diffraction (DD), 2015Method of symmetric polynomials (MSP) is developed to calculations of high powers of matrices. It is based on the new type of recurrence relations between symmetric polynomials of n-th order. New algorithm for computation j-th power of matrix of order n is compared with methods of ordinary multiplication and repeated squaring of matrix. Dependencies of
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On characteristic polynomials of periodic graphs
Discrete Mathematics and Applications, 2004This work considers periodic graphs of two types, chain and cyclic extensions of an arbitrary graph. Some formulas are obtained which express the characteristic polynomials of such constructions in terms of the polynomials of the initial graphs, their subgraphs and the polynomials of a chain and a cycle.
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Periodic Breathing in Preterm Infants: Incidence and Characteristics
Pediatrics, 1989The prevalence and characteristics of periodic breathing in preterm infants were measured by 24-hour impedance pneumograms in 66 preterm infants before discharge from the nursery. Four periodic breathing parameters (percentage of periodic breathing per quiet time, number of episodes of periodic breathing per 100 minutes of quiet time, mean duration of ...
S F, Glotzbach +4 more
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