Results 81 to 90 of about 2,435 (236)

Detecting period-doubling bifurcation: an approximate monodromy matrix approach

Automatica, 2001
A quasi-analytical approach is developed for detecting period-doubling bifurcation emerging near a Hopf bifurcation point. The new algorithm employs higher-order Harmonic Balance Approximations (HBAs) to compute the monodromy matrix, useful for the study of limit cycle bifurcations.
Daniel W. Berns, Jorge L. Moiola, Guanrong Chen   +2 more
openaire   +2 more sources

System as a Unifying Process: An Onto‐Epistemic Notion of System

Systems Research and Behavioral Science, EarlyView.
ABSTRACT This article proposes an onto‐epistemic notion of system as a relational process of unifying a multiplicity of actuals and abstractions into an actual unity, thereby encompassing concreteness and abstraction onto the same plane. This notion rejects the opposition between constructivism and realism within systems studies, the excessive focus on
Felipe Rodrigues Oliveira e Silva, Sandro Luis Schlindwein   +1 more
wiley   +1 more source

Asymptotic stability and bifurcations of a perturbed McMillan map

Journal of Inequalities and Applications
This paper presents various bifurcations of the McMillan map under perturbations of its coefficients, such as period-doubling, pitchfork, and hysteresis bifurcation. The associated existence regions are located.
Lili Qian, Qiuying Lu, Guifeng Deng
doaj   +1 more source

Trace Element Contamination in Top Predatory Elasmobranchs From the Southern Black Sea: Implications for Ecosystem Health and Risk Assessment

Environmental Toxicology, EarlyView.
ABSTRACT Environmental pollution resulting from the rapid increase in human population, urbanization, intensive use of chemicals in agriculture, and industrial development has reached a level that threatens natural life today. Trace elements are one of the most important factors causing significant levels of pollution in the environment and are added ...
Levent Bat, Süleyman Özdemir, Zekiye Birinci Özdemir, Ayşah Öztekin   +3 more
wiley   +1 more source

‘Humans Are Omnipotent and Beyond Their Destiny!’ Late Soviet Perspective on Girls’ Upbringing and the Female Self

Gender &History, EarlyView.
ABSTRACT The article examines post‐Stalinist Soviet expertise on girls’ education and upbringing, analysing texts for and about female adolescents created by specialists in pedagogical sciences, psychology, sociology, medicine as well as children's writers and journalists from different parts of the Union, including national republics. The text focuses
Ella Rossman
wiley   +1 more source

Complex dynamics of a three species food-chain model with Holling type IV functional response

Nonlinear Analysis, 2011
In this paper, dynamical complexities of a three species food chain model with Holling type IV predator response is investigated analytically as well as numerically. The local and global stability analysis is carried out. The persistence criterion of the
Ranjit Kumar Upadhyay, Sharada Nandan Raw   +1 more
doaj  

A New Feigenbaum-Like Chaotic 3D System

Discrete Dynamics in Nature and Society, 2014
Based on Sprott N system, a new three-dimensional autonomous system is reported. It is demonstrated to be chaotic in the sense of having positive largest Lyapunov exponent and fractional dimension. To further understand the complex dynamics of the system,
Huitao Zhao, Yiping Lin, Yunxian Dai
doaj   +1 more source

‘Let's Turn the Grass Into Meat’: Animal Husbandry as Women's Work in Cold War North Korea

Gender &History, EarlyView.
ABSTRACT In postcolonial North Korea, the future of the nation was said to be a function of the feedlot. Unobtainable on the battlefields of the recently ended Korean War, liberation and unification of the peninsula became a question of competitive developmentalism.
Sunho Ko, Derek J. Kramer
wiley   +1 more source

Dynamical Regimes in a Delayed Predator–Prey Model with Predator Hunting Cooperation: Bifurcations, Stability, and Complex Dynamics

Modelling
In this paper, a predator–prey model with hunting cooperation and maturation delay is studied. Through theoretical analysis, we investigate the existence of multiple stability switches of the positive equilibrium. By applying Hopf bifurcation theory, the
Chao Peng, Jiao Jiang
doaj   +1 more source

Inferring alternative ecosystem states with field survey data

Methods in Ecology and Evolution, EarlyView.
Abstract Many ecosystems potentially exhibit alternative stable states, where distinct states can coexist under identical environmental conditions. While simulation models have generated key hypotheses in alternative stable states theory, they often rely on scale‐free parameters disconnected from real ecosystems.
Ning Chen, Xiaoxue Dong, Xinwei Li, Lei Huang, Heng Huang, Changjia Li, Yanchuang Zhao, Chi Xu, Miaojun Ma, Zak Ratajczak, Changming Zhao   +10 more
wiley   +1 more source