Results 91 to 100 of about 339,262 (287)

A tutorial introduction to nonlinear dynamics in economics

Nova Economia, 2013
The last few years have witnessed a great interest in nonlinear dynamies. This fascinating subject has enabled both theoreticians and practitioners in many fields to handle and analyse "c1assical" problems in a new and promising way. Although some of the
Luiz A. Aguirre, Antônio Aguirre
doaj  

Multidimensional Scaling Visualization Using Parametric Similarity Indices

Entropy, 2015
In this paper, we apply multidimensional scaling (MDS) and parametric similarity indices (PSI) in the analysis of complex systems (CS). Each CS is viewed as a dynamical system, exhibiting an output time-series to be interpreted as a manifestation of its ...
J. A. Tenreiro Machado, António M. Lopes, Alexandra M. Galhano   +2 more
doaj   +1 more source

Random Walks and Non-Linear Paths in Macroeconomic Time Series: Some Evidence and Implications [PDF]

This paper investigates whether the inherent non-stationarity of macroeconomic time series is entirely due to a random walk or also to non-linear components. Applying the numerical tools of the analysis of dynamical systems to long time series for the US,
Adriaan van Zon, Franco Bevilacqua
core  

A Deterministic Approach to Approximation Modelling [PDF]

, 1989
In this paper we will describe a deterministic approach to time series analysis. The central problem consists of approximate modelling of an observed time series by means of a deterministic dynamical system.
Heij, C., Willems, J.C.
core  

Engineered extracellular vesicles enriched with the miR‐214/199a cluster enhance the efficacy of chemotherapy in ovarian cancer

Molecular Oncology, EarlyView.
Loss of the miR‐214/199a cluster is associated with recurrence in ovarian cancer. Engineered small extracellular vesicles (m214‐sEVs) elevate miR‐214‐3p/miR‐199a‐5p in tumor cells, suppress β‐catenin, TLR4, and YKT6 signaling, reprogram tumor‐derived sEV cargo, reduce chemoresistance and migration, and enhance carboplatin efficacy and survival in ...
Weida Wang, Ayesha Alvero, Yi Qin, Mingjin Wang, Alexandra Fox, Yanfeng Li, Michael Millman, Amy Kemper, Gil Mor, Xian Shuang Liu, Michael Chopp, Zheng Gang Zhang, Yi Zhang   +12 more
wiley   +1 more source

Detection of chaotic patterns in dripping faucets through nonlinear dynamic system analysis based on observations using 2700 high-frequency frames

MethodsX
The objective of this study is the detection of chaotic patterns in the dripping of a faucet by means of nonlinear dynamical systems analysis. A controlled experiment was designed by setting up a physical system with a dripping faucet under varying ...
Edgar Orlando Ladino-Moreno
doaj   +1 more source

Entropic nonextensivity as a measure of time series complexity

, 2004
Information entropy is applied to the analysis of time series generated by dynamical systems. Complexity of a temporal or spatio-temporal signal is defined as the difference between the sum of entropies of the local linear regions of the trajectory ...
Cao, Frazer, Kostopoulos, Milan Rajković, Packard, Rajković, Rajković, Stark, Torcini, Tsallis   +9 more
core   +2 more sources

Navigating new norms: a systematic review of factors for the development of effective digital tools in higher education

FEBS Open Bio, EarlyView.
What factors make for an effective digital learning tool in Higher Education? This systematic review identifies elements of a digital tool that published examples reveal to be features of an engaging and impactful digital tool. A systematic literature search yielded 25 research papers for analysis.
Akmal Arzeman, Jessica Haines, Connie Pritchard, Stephen Rutherford, Nigel Francis   +4 more
wiley   +1 more source

irreversibility: A Python Package for Assessing and Manipulating the Time Irreversibility of Real-World Time Series

Entropy
Time irreversibility refers to the property of some dynamical systems and time series of being statistically different when observed backward in time.
Massimiliano Zanin
doaj   +1 more source

Recurrence Plots 25 years later -- gaining confidence in dynamical transitions

, 2013
Recurrence plot based time series analysis is widely used to study changes and transitions in the dynamics of a system or temporal deviations from its overall dynamical regime.
Kurths, Jürgen, Marwan, Norbert, Schinkel, Stefan   +2 more
core   +1 more source