Results 11 to 20 of about 115,017 (313)
Evolution of periodicity in periodical cicadas [PDF]
Scientific Reports, 2015 AbstractPeriodical cicadas (Magicicada spp.) in the USA are famous for their unique prime-numbered life cycles of 13 and 17 years and their nearly perfectly synchronized mass emergences. Because almost all known species of cicada are non-periodical, periodicity is assumed to be a derived state.
Ito, Hiromu +7 more
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Energy Harvesting in a System with a Two-Stage Flexible Cantilever Beam
Sensors, 2022 The subject of the research contained in this paper is a new design solution for an energy harvesting system resulting from the combination of a quasi-zero-stiffness energy harvester and a two-stage flexible cantilever beam.
Jerzy Margielewicz +4 more
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Evidence for Solar Modulation on the Millennial-Scale Climate Change of Earth
Universe, 2020 In this study, we use available reconstructed data to investigate periodicities of solar activity (i.e., sunspot number) and the Earth’s climate change (temperatures of Lake Qinghai in China and Vostok in Antarctica, the GISP δ18O climate record of ...
Xinhua Zhao +2 more
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Temporal Analysis of Ground Movement at a Metal Mine in China
Remote Sensing, 2022 Mining-induced ground movement is a complicated nonlinear process and a regional geological hazard. Time series in Earth sciences are often characterized as self-affine, long-range persistent, where the power spectra exhibit a power-law dependence on ...
Guang Li, Xin Hui, Fengshan Ma, Jie Guo
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The chronobiology of migraine: a systematic review
The Journal of Headache and Pain, 2021 Background The paroxysmal nature of migraine is a hallmark of the disease. Some patients report increased attack frequency at certain seasons or towards the end of the week, while others experience diurnal variations of migraine attack onset.
Amanda Holmen Poulsen +3 more
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Distribution of histopathological types of thyroid tumors in 1999-2015 compared to 1966-1988 year period [PDF]
Archive of Oncology, 2020 Background: The most common thyroid tumors originate from the epithelial follicular cells. Etiology involved in the development of thyroid carcinoma is multifactorial, including external influences and genetic predisposition.
Makazlieva Tanja +3 more
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Influence of atmospheric pressure change on gas sampling in mine closed area
矿业科学学报, 2020 The variation of atmospheric pressure will cause the exchange of air volume between the closed area of the mine and the external environment, which will have an impact on the gas migration in the closed area of the mine.In order to study the influence of
Lei Baiwei +3 more
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Effect of Latitude on Seasonality of Tuberculosis, Australia, 2002–2011
Emerging Infectious Diseases, 2012 Seasonal variation in tuberculosis diagnoses recently has been reported in various populations. In Australia, seasonality of tuberculosis diagnoses was more pronounced in areas where UV exposure is reduced and vitamin D deficiency is more prevalent.
Jennifer H. MacLachlan +2 more
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Natural catastrophes and point-like processes Data handling and prevision
Annals of Geophysics, 1998 A frequent approach when attempting to manage a natural catastrophe is in terms of a numerical model, by which we try to forecast its occurrence in space and time. But, sometimes this is difficult or even unrealistic.
G. P. Gregori
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SIAM Journal on Control and Optimization, 2010 This paper studies behaviors that are defined on a torus, or equivalently, behaviors defined in spaces of periodic functions, and establishes their basic properties analogous to classical results of Malgrange, Palamodov, Oberst et al. for behaviors on R^n. These properties - in particular the Nullstellensatz describing the Willems closure - are closely
Diego Napp Avelli +2 more
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