Nonlinear Dynamics, Psychology, and Life Sciences
SSCI-ISI SCOPUS (LifeSciences)
1573-6652
1090-0578
Cơ quản chủ quản: Society for Chaos Theory in Psychology & Life Sciences , SOC CHAOS THEORY PSYCHOLOGY & LIFE SCIENCES
Lĩnh vực:
Applied Mathematics
Phân tích ảnh hưởng
Các bài báo tiêu biểu
On Multiobjective Oligopoly
Tập 7 - Trang 205-219 - 2003
Multiobjective oligopoly models are constructed. The objectives of the first two models are to maximize profits and to maximize sales. In the third model the objectives are to maximize profits and to minimize risk. Giving more weight to risk minimization decreased the profits. In all three models, we found that the weight of profit maximization has to be higher than a given threshold. Again they r......
Self-Organization and Resource Exchange in EVS Modeling
- 2002
Two versions of a model, named Resource, were developed within the Ensembles with Variable Structure (EVS) approach. The EVS-approach represents interacting groups (populations) with a flexible structure of connections and a diversity of elements (agents), where agents possess an abstract set of characteristics, and seek to form connections with other agents according to the degree of compatibilit......
Memory Across Eye-Movements: 1/f Dynamic in Visual Search
Tập 6 - Trang 1-25 - 2002
The ubiquity of apparently random behavior in visual search (e.g., Horowitz & Wolfe, 1998) has led to our proposal that the human oculomotor system has subtle deterministic properties that underlie its complex behavior. We report the results of one subject's performance in a challenging search task in which 10,215 fixations were accumulated. A number of statistical and spectral tests revealed both......
Responses to Constrained Stimulus Sequences in Nonlinear Psychophysics
Tập 5 - Trang 205-222 - 2001
Generic models used in nonlinear psychophysical dynamics (NPD) have been extensively explored for their capacity to simulate both local singular phenomena and non-monotonic response functions. Internal parameters representing a form of system sensitivity and secondary recursive activity can interact when very low stimulation operates on the gain controlling the evolution of response trajectories, ......
Heterochromatin and Complexity: A Theoretical Approach
Tập 7 - Trang 329-361 - 2003
Heterochromatin represents 30% of eukaryotic genome in Drosophila and 15% in humans. Despite extensive research spanning many decades, its evolutionary significance, as well as the forces that guarantee its maintenance, are still elusive. Many theoretical and experimental approaches have led researchers to propose several conceptual frameworks to elucidate the nature of this huge mysterious geneti......
Dynamics in the Development of Large Information Exchange Groups and Virtual Communities
Tập 1 - Trang 123-149 - 1997
This study explored the dynamics associated with the development of a large scale internet discussion group that grew in size to over 800 subscribers. The unit of data analysis was the subscription level over time. The situation allowed the comparative evaluation of several models and metrics: the fractal dimension extracted from the inverse power law, the Lyapunov dimension extra......
Nonlinear Dynamics of Motivational Flow
Tập 3 - Trang 259-273 - 1999
Motivational flow is the experience of intrinsic motivation, which is in turn the result of the levels of challenge and skill involvement for a particular task. The level of flow is predictive of the amount of time a person will spend in that task, and it is thought to form a basis for an individual's time allocation between occupational and leisure activities. In this study, 28 u......
Community Dynamics in a University Environment
Tập 7 - Trang 181-203 - 2003
Scholars have characterized academic communities of faculty, administration, and students in U.S. universities as “organized anarchies.” In contrast, we offer evidence that the community structures of two representative public university systems are notably systematic by applying empirical phase-diagram techniques from the nonlinear dynamics literature to reconstruct low-dimensional deterministic ......
Urban Segregation as a Nonlinear Phenomenon
Tập 6 - Trang 269-283 - 2002
A new mathematical model that describes segregation dynamics of two distinct populations in a city is presented. The model associates segregation with an instability of a spatially uniform mixed population state. Segregated states correspond to alternating domains of overrepresentation and underrepresentation of a given population. A second instability designates a transition to a stronger form of......
Temporal Dynamics of Brain Activity in Human Memory Processes
Tập 6 - Trang 323-334 - 2002
We propose a line of study by which Functional Magnetic Resonance Imaging (FMRI) can be used together with nonlinear dynamics concepts as a medium for the study of brain organization. The concentration is on (a) the complex behavior of elementary neural circuits, and how they interact over brief spans of time to produce cognition and memory; and (b) the change in circuit patterns associated with a......