Sketches of Dynamic Complexity

2020 ◽  
Vol 49 (2) ◽  
pp. 18-29
Author(s):  
Thomas Schwentick ◽  
Nils Vortmeier ◽  
Thomas Zeume
Keyword(s):  
Dynamic Complexity

The Hundred Days of Sara Mata: Explaining Unnatural Death in Vanuatu

1984 ◽  
Vol 14 (2) ◽  
pp. 135-144
Author(s):  
Margaret Rodman ◽  
William Rodman
Keyword(s):  
Dynamic Complexity ◽  
Process Of Change ◽  
Unnatural Death ◽  
Structural Principles

Who or what killed Sara Mata? During the hundred days of mourning that followed the young woman's “unnatural” death, residents of Aoba, an island in Vanuatu, sought to discover the cause of Sara's death. Alternative local explanations of the death highlight the ambiguity that characterizes Aoban beliefs about people's ability to cause death by supernatural means. We show the conventional anthropological categories of poison, sorcery, and witchcraft may misrepresent the dynamic complexity of such indigenous beliefs. Finally, we discuss a process of change in Aoban ideas concerning unnatural death, a shift from a belief in sorcery to a belief in self-destruction by supernatural means. The possibility that a society can “rewrite” a transitive process of sorcery into a reflexive mode raises new questions about the theoretical relations between witchcraft, sorcery, and structural principles of society.

Dynamic Complexity Measures for Use in Complexity-Based System Design

2017 ◽  
Vol 11 (4) ◽  
pp. 2018-2027 ◽  
Author(s):  
Jonathan Fischi ◽  
Roshanak Nilchiani ◽  
Jon Wade
Keyword(s):  
System Design ◽  
Dynamic Complexity ◽  
Complexity Measures

scholarly journals The dynamic complexity of the TRPC1 channelosome

Channels ◽  
2011 ◽  
Vol 5 (5) ◽  
pp. 424-431 ◽  
Author(s):  
Hwei Ling Ong ◽  
Indu S. Ambudkar
Keyword(s):  
Dynamic Complexity

scholarly journals Beyond genetics – The emerging role of epigenetics and its clinical aspects

2012 ◽  
Vol 153 (6) ◽  
pp. 214-221 ◽  
Author(s):  
Veronika Urbán S. ◽  
Elizabeta Benevolenskaya ◽  
Judit Kiss ◽  
Bernadett Sági ◽  
Beáta Hegyi ◽  
...  
Keyword(s):  
Decisive Role ◽  
Clinical Aspects ◽  
Dynamic Complexity ◽  
Spatial Changes ◽  
Future Drug ◽  
A Cell ◽  
Multiple Cell ◽  
Induced Changes ◽  
Cell Phenotypes ◽  
Diversity Of Life

Analysis of genomic sequences has clearly shown that the genomic differences among species do not explain the diversity of life. The genetic code itself serves as only a part of the dynamic complexity that results in the temporal and spatial changes in cell phenotypes during development. It has been concluded that the phenotype of a cell and of the organism as a whole is more influenced by environmentally-induced changes in gene activity than had been previously thought. The emerging field of epigenetics focuses on molecular marks on chromatin; called the epigenome, which serve as transmitters between the genome and the environment. These changes not only persist through multiple cell division cycles, but may also endure for multiple generations. Irregular alterations of the epigenome; called epimutations, may have a decisive role in the etiology of human pathologies such as malignancies and other complex human diseases. Epigenetics can provide the missing link between genetics, disease and the environment. Therefore, this field may have an increasing impact on future drug design and serve as a basis for new therapeutic/preventative approaches. Orv. Hetil., 2012, 153, 214–221.

scholarly journals The Dynamic Complexity of a Holling Type-IV Predator-Prey System with Stage Structure and Double Delays

2011 ◽  
Vol 2011 ◽  
pp. 1-19 ◽  
Author(s):  
Yakui Xue ◽  
Xiafeng Duan
Keyword(s):  
Time Delay ◽  
Equilibrium Point ◽  
Dynamical Behavior ◽  
Stage Structure ◽  
Point Of View ◽  
Maturation Time ◽  
Dynamic Complexity ◽  
Predator Prey ◽  
Predator Prey Model ◽  
Type Iv

We invest a predator-prey model of Holling type-IV functional response with stage structure and double delays due to maturation time for both prey and predator. The dynamical behavior of the system is investigated from the point of view of stability switches aspects. We assume that the immature and mature individuals of each species are divided by a fixed age, and the mature predator only attacks the mature prey. Based on some comparison arguments, sharp threshold conditions which are both necessary and sufficient for the global stability of the equilibrium point of predator extinction are obtained. The most important outcome of this paper is that the variation of predator stage structure can affect the existence of the interior equilibrium point and drive the predator into extinction by changing the maturation (through-stage) time delay. Our linear stability work and numerical results show that if the resource is dynamic, as in nature, there is a window in maturation time delay parameters that generate sustainable oscillatory dynamics.

scholarly journals ASAS-NANP SYMPOSIUM: Review of systems thinking concepts and their potential value in animal science research

2021 ◽  
Vol 99 (2) ◽  
Author(s):  
Emma C Stephens
Keyword(s):  
Problem Behaviors ◽  
Systems Thinking ◽  
Science Research ◽  
Animal Production ◽  
Grand Challenge ◽  
Animal Science ◽  
Dynamic Complexity ◽  
Production Decisions ◽  
Persistent Problem ◽  
Research Frameworks

Abstract Worldwide, our collective research and policy institutions, including the American Society of Animal Science (ASAS), are calling for more systems-based research and analysis of society’s most pressing and complex problems. However, the use of systems analysis within animal science remains limited and researchers may not have the tools to answer this call. This review thus introduces important concepts in systems thinking methodology, such as policy resistance, feedback processes, and dynamic complexity. An overall rationale for systems thinking and analysis is presented, along with examples of the application of these concepts in current animal science research. In order to contrast systems approaches to more frequently employed event-oriented research frameworks, both frameworks are then applied to the ASAS’ identified “Grand Challenge” problem of antimicrobial resistance (AMR) in order to compare these two kinds of analyses. Systems thinking stresses the importance of underlying system structures that lead to persistent problem behaviors vs a focus on unidirectional cause-and-effect relationships. A potential systems framework for animal production decisions to use antimicrobials is shown that more explicitly accounts for AMR in a way that can lead to different animal production decisions than the event-oriented framework. Acknowledging and accounting for fundamental system structures that can explain persistent AMR will lead to different potential solutions to this problem than would be suggested from more linear approaches. The challenges and benefits of incorporating systems methods into animal science research are then discussed.

scholarly journals Stakeholder Analysis as a Tool for Systems Approach Research in HRD

2018 ◽  
Author(s):  
Robert Yawson ◽  
Bradley Greiman
Keyword(s):  
Human Resource Development ◽  
Agricultural Education ◽  
Systems Approach ◽  
Stakeholder Analysis ◽  
Collective Actions ◽  
It Use ◽  
Dynamic Complexity ◽  
Analysis Methodology ◽  
Hrd Professionals ◽  
Induced Changes

<p>The world is experiencing significant, largely economic and sociotechnical, induced change. These induced changes are meaningful with a function of people taking collective actions around common beliefs. These changes are more than jargon, cliché and hyperbole, and they are effecting major transformations. These transformations will impact on how human resources are developed and we need to be able to forecast its effects. In order to produce such forecasts, HRD needs to become more predictive - to develop the ability to understand how human capital systems and organizations will behave in future. Further development of systems models is required to allow such predictions to be made. Critical to the development of such models will be to understand that linear epistemology cannot be the dominant epistemology of practice and that dynamic complexity of challenges confronted by HRD professionals in their daily research and practice requires a nonlinear epistemology of practice, rather than reductive or linear thinking or processes of normal science. Although the adoption of a systems approach to research in HRD is not novel, methodologies and conceptual approaches underlying it use are not very well developed. In this paper, a stakeholder analysis methodology that was developed as a novel method in conducting systems approach research in human resource development, public policy and agricultural education is described. </p>

scholarly journals Chapter 7. Mechanisms of antinoceptive response of a sensory neuron

2019 ◽  
pp. 132-175
Author(s):  
Olga E. Dik ◽  
◽  
Alexander D. Nozdrachev ◽  
Keyword(s):  
Molecular Mechanism ◽  
Impulse Activity ◽  
Opioid Analgesic ◽  
Temporal Organization ◽  
Stationary States ◽  
Dynamic Complexity ◽  
Nociceptive Neurons ◽  
Pharmacological Targets ◽  
Activation Gating

The seventh chapter is devoted to the determination of the mechanisms of changes in the dynamic complexity of the patterns of impulse activity of nociceptors. As a result of the study of the mechanisms of changes in the dynamic complexity of the patterns of impulse activity of nociceptive neurons when the antinociceptive response occurs, it was found that the change in this complexity is based on rearrangements in the temporal organization of patterns due to bifurcations of stationary states and limit cycles, leading to the appearance of two types of burst activity. The mechanism of correction of the damaging pain effect is based on the molecular mechanism of suppression of this activity associated with the modification of the activation gating structure of slow sodium NaV1.8 channels under the action of comenic acid, a drug substance of the non-opioid analgesic “Anoceptin”. The methodology for analyzing the considered molecular mechanism can be used in the search for new pharmacological targets for further research related to the development of innovative pharmacological strategies in the correction of pathological conditions.

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