Results 51 to 60 of about 8,335,626 (297)
Bifurcation routes to chaos in an extended van der Pol's equation applied to economic models
Electronic Journal of Differential Equations, 2009 In this paper a 3-dimensional system of autonomous differential equations is studied. It can be interpreted as an idealized macroeconomic model with foreign capital investment introduced in [9] or an idealized model of the firm profit introduced in [3]
Lenka Pribylova
doaj
Heliyon, 2022 The current manuscript studies a discrete-time phytoplankton-zooplankton model with Holling type-II response. The original model is modified by considering the condition that the phytoplankton population is getting infected with an external toxic ...
Muhammad Salman Khan +3 more
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Analytics of period doubling [PDF]
Communications in Mathematical Physics, 1987 For mappings \(F_ 0(x)=rx(1-x)\) of the interval [0,1] (0\(\leq r\leq 4)\) it is well known that there are parameter values \(r_ ...
openaire +2 more sources
Period doubling bifurcation and high-order resonances in RR Lyrae hydrodynamical models [PDF]
, 2011 We investigated period doubling, a well-known phenomenon in dynamical systems, for the first time in RR Lyrae models. These studies provide theoretical background for the recent discovery of period doubling in some Blazhko RR Lyrae stars with the Kepler ...
Z. Koll'ath, L. Moln'ar, R. Szab'o
semanticscholar +1 more source
Molecular Oncology, EarlyView.Keratin 19 (KRT19) is overexpressed in high‐grade serous ovarian cancer with high levels of Kallikrein‐related peptidases (KLK) 4–7 and is associated with poor survival. In vivo analyses demonstrate that elevated KRT19 increases peritoneal tumour burden.
Sophia Bielesch +13 more
wiley +1 more source
Mathematics, 2021 Simple mathematical tools are needed to quantify the threat posed by emerging and re-emerging infectious disease outbreaks using minimal data capturing the outbreak trajectory.
Alexandra Smirnova +2 more
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Discovery of period doubling in BL Herculis stars of the OGLE survey. Observations and theoretical models [PDF]
, 2011 We report the discovery of a period doubling behaviour in a 2.4-d BL Herculis type variable of the Galactic bulge. Another bulge BL Her type star (P = 2.25 d) is a strong period doubling candidate.
R. Smolec +11 more
semanticscholar +1 more source
Molecular Oncology, EarlyView.We analyze cisplatin–DNA adducts (CDAs) and double‐strand breaks (DSBs) in a cell‐cycle‐dependent manner. We find that CDAs form similarly across all cell cycle phases. DSBs arise only in S‐phase. CDAs might not directly impair DSB repair, but S‐phase DSB lesions evolve in the presence of CDAs and disrupt repair in G2, also causing radiosensitization ...
Ye Qiu +10 more
wiley +1 more source
A new chaotic attractor from 2D discrete mapping via border-collision period-doubling scenario
Discrete Dynamics in Nature and Society, 2005 The following map is studied: (x,y)→(1+a(|x|−y2)+y,bx). It is proved numerically that this model can display two different chaotic attractors, one is new and the other is a Lozi-type attractor.
Zeraoulia Elhadj
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Issues, challenges and strategies for doubling the farmers’ income in India – A review
The Indian Journal of Agricultural Sciences, 2019 The Government of India in its annual budget 2016-17 set a policy target of doubling farmers' income by 2022. Agriculture sustains livelihood for more than half of the India's total population.
BANKEY BIHARI +3 more
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