positive feedback loopsmultiple interacting feedback loopsdifferential equationsmultiple steady states/ A0210 Algebra, set theory, and graph theory A0230 Function theory, analysis A8710 General, theoretical, and mathematical biophysicsThis paper aims to draw the attention of mathematicians to a class of...
This reaction enabled the construction of negative feedback loops that, when combined with autocatalysis (Fig. 1b), can induce sustained oscillations. Results Designing negative feedback To construct a tunable negative feedback loop for thiol chemistry, we must design a reaction network in which ...
Measurement-based care (MBC) is an effective tool in the delivery of evidence-based practices (EBPs). MBC utilizes feedback loops to share information and drive changes throughout a learning healthcare system. Few studies have demonstrated this practice
We explore the hypothesis that the relative abundance of feedback loops in many empirical complex networks is severely reduced owing to the presence of an inherent global directionality. Aimed at quantifying this idea, we propose a simple probabilistic model in which a free parameter γ controls the...
Graphs and Digraphs We consider undirected and directed graphs that may contain self-loops and multiple edges and mostly use standard notation that can be found, for instance, in the textbook by Diestel [16]. For an undirected or directed graph D we denote by V(D) its vertex set and by ...
A minimum feedback arc set is, for a directed graph, a minimum set of arcs which if removed leaves the resultant graph free of directed loops. This paper e... Younger,D. - 《IEEE Transactions on Circuit Theory》 被引量: 131发表: 1963年 Cycle killer... qu'est-ce que c'est? On ...
After reviewing the graph representation of system structure, the article presents the rationale and algorithms for model partitions based on data availability and structural characteristics. Special attention is given to the decomposition of cycle partitions that contain all the model's feedback loops, ...
Linking feedback loops and system behavior is part of the foundation of system dynamics, yet the lack of formal tools has so far prevented a systematic application of the concept, except for very simple systems. Having such tools at their disposal would be a great help to analysts in ...
(observed variables in the dataset are sufficient to capture the causal relationships among them), causal Markov condition (causal relationships among variables form a directed acyclic graph (DAG) and that there are no direct causal loops), presence of no contemporaneous causal links (no zero lag ...
Adopting techniques from graph theory, we find that the strength of the trade network feedback is a crucial determinant of the echo effect in industry returns. Returns of the echo strategy implemented within high-feedback strength industries reach 1% monthly. Consistent with limited-information ...