scholarly journals On solutions of one multidimensional complex system with partial derivatives

2021 ◽  
Author(s):  
Махсуда Рахимова
Keyword(s):  
Complex System ◽  
Partial Derivatives ◽  
Multidimensional Complex

scholarly journals From the Difference of Structures to the Structure of the Difference

Complexity ◽  
2018 ◽  
Vol 2018 ◽  
pp. 1-12 ◽  
Author(s):  
Massimiliano Zanin ◽  
Ernestina Menasalvas ◽  
Xiaoqian Sun ◽  
Sebastian Wandelt
Keyword(s):  
Complex System ◽  
Network Theory ◽  
General Framework ◽  
Random Noise ◽  
Time Varying ◽  
Evolving Systems ◽  
Multiple Networks ◽  
Stochastic Fluctuations ◽  
Multidimensional Complex ◽  
The Difference

When dealing with evolving or multidimensional complex systems, network theory provides us with elegant ways of describing their constituting components, through, respectively, time-varying and multilayer complex networks. Nevertheless, the analysis of how these components are related is still an open problem. We here propose a general framework for analysing the evolution of a (complex) system, by describing the structure created by the difference between multiple networks by means of the Information Content metric. Differently from other approaches, which focus on assessing the magnitude of the change, the proposed one allows understanding if the observed changes are due to random noise or to structural (targeted) modifications; in other words, it allows describing the nature of the force driving the changes and discriminating between stochastic fluctuations and intentional modifications. We validate the framework by means of sets of synthetic networks, as well as networks representing real technological, social, and biological evolving systems. We further propose a way of reconstructing network correlograms, which allow converting the system’s evolution to the frequency domain.

scholarly journals Innate talent in sport: from theoretical concept to complex reality – comment on Baker & Wattie

2019 ◽  
Author(s):  
Nikki Rommers ◽  
Roland Rössler
Keyword(s):  
Complex System ◽  
Theoretical Concept ◽  
Motivational Factors ◽  
Dynamic Nature ◽  
Talent Identification ◽  
Training History ◽  
Multidimensional Complex ◽  
And Training ◽  
Maturational Timing

Over the last 20 years, the concept of innate talent has been discussed in the literature, and different factors have been associated with talent in different sports. However, it should be noted that talent identification is sport-, or even position-specific, and no ‘one size fits all’ consensus can be established. Specific talent profiles should be developed, acknowledging the multidimensionality of talent by taking physical, physiological, cognitive, psychological, and motivational factors into account. These profiles should also be age-specific and adjusted for covariates such as maturational timing and training history. To make a step forward in talent identification, we should not only move ahead in identifying innate talent, but also acknowledge the multifaceted and dynamic nature of talent. Therefore, we recommend researchers and practitioners to start approaching talent as a multidimensional, complex system.

On the motion of comet P/d’Arrest

1974 ◽  
Vol 22 ◽  
pp. 145-148
Author(s):  
W. J. Klepczynski
Keyword(s):  
Equations Of Motion ◽  
Variational Equations ◽  
Partial Derivatives

AbstractThe differences between numerically approximated partial derivatives and partial derivatives obtained by integrating the variational equations are computed for Comet P/d’Arrest. The effect of errors in the IAU adopted system of masses, normally used in the integration of the equations of motion of comets of this type, is investigated. It is concluded that the resulting effects are negligible when compared with the observed discrepancies in the motion of this comet.

A Reproducible Selective Stain for Cardiac Sarcoplasmic Reticulum

1974 ◽  
Vol 32 ◽  
pp. 214-215
Author(s):  
R. A. Waugh ◽  
J. R. Sommer
Keyword(s):  
Complex System ◽  
Electron Microscope ◽  
Sarcoplasmic Reticulum ◽  
Transmission Electron Microscope ◽  
Electron Microscopic ◽  
Cardiac Sarcoplasmic Reticulum ◽  
Transmission Electron

Cardiac sarcoplasmic reticulum (SR) is a complex system of intracellular tubules that, due to their small size and juxtaposition to such electron-dense structures as mitochondria and myofibrils, are often inconspicuous in conventionally prepared electron microscopic material. This study reports a method with which the SR is selectively “stained” which facilitates visualizationwith the transmission electron microscope.

Art as a Self-Organizing Complex System

1998 ◽  
Author(s):  
Svetlana Apenova ◽  
Igor Yevin
Keyword(s):  
Complex System ◽  
Self Organizing

Implementation of Fuzzy Logic Control on Battery Charging System

2019 ◽  
Vol 3 (1) ◽  
pp. 118-126 ◽  
Author(s):  
Prihangkasa Yudhiyantoro
Keyword(s):  
Complex System ◽  
Fuzzy Logic ◽  
Fuzzy Logic Control ◽  
Expert Knowledge ◽  
Experimental Result ◽  
Rule Base ◽  
Battery Charging ◽  
Charging System ◽  
Logic Control ◽  
Charging Control

This paper presents the implementation fuzzy logic control on the battery charging system. To control the charging process is a complex system due to the exponential relationship between the charging voltage, charging current and the charging time. The effective of charging process controller is needed to maintain the charging process. Because if the charging process cannot under control, it can reduce the cycle life of the battery and it can damage the battery as well. In order to get charging control effectively, the Fuzzy Logic Control (FLC) for a Valve Regulated Lead-Acid Battery (VRLA) Charger is being embedded in the charging system unit. One of the advantages of using FLC beside the PID controller is the fact that, we don’t need a mathematical model and several parameters of coefficient charge and discharge to software implementation in this complex system. The research is started by the hardware development where the charging method and the combination of the battery charging system itself to prepare, then the study of the fuzzy logic controller in the relation of the charging control, and the determination of the parameter for the charging unit will be carefully investigated. Through the experimental result and from the expert knowledge, that is very helpful for tuning of the  embership function and the rule base of the fuzzy controller.

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