Results 41 to 50 of about 35,359 (261)

A Graph-Based Ant Colony Optimization Approach for Process Planning

open access: yesThe Scientific World Journal, 2014
The complex process planning problem is modeled as a combinatorial optimization problem with constraints in this paper. An ant colony optimization (ACO) approach has been developed to deal with process planning problem by simultaneously considering ...
JinFeng Wang, XiaoLiang Fan, Shuting Wan
doaj   +1 more source

A Local Optima Network View of Real Function Fitness Landscapes

open access: yesEntropy, 2022
The local optima network model has proved useful in the past in connection with combinatorial optimization problems. Here we examine its extension to the real continuous function domain.
Marco Tomassini
doaj   +1 more source

Analysis of Regular Patterns in Un-Weighted Directed Graphs

open access: yesInternational Journal of Information Retrieval Research, 2021
Time evolving networks tend to have an element of regularity. This regularity is characterized by existence of repetitive patterns in the data sequences of the graph metrics. As per our research, the relevance of such regular patterns to the network has not been adequately explored.
Anand Gupta   +3 more
openaire   +2 more sources

On the Graph Isomorphism Completeness of Directed and Multidirected Graphs

open access: yesMathematics
The category of directed graphs is isomorphic to a particular category whose objects are labeled undirected bipartite graphs and whose morphisms are undirected graph morphisms that respect the labeling. Based on this isomorphism, we begin by showing that
Sebastian Pardo-Guerra   +2 more
doaj   +1 more source

Polynomial Time Algorithm for Determining Max-Min Paths in Networks and Solving Zero Value Cyclic Games [PDF]

open access: yesComputer Science Journal of Moldova, 2005
We study the max-min paths problem, which represents a game version of the shortest and the longest paths problem in a weighted directed graph. In this problem the vertex set V of the weighted directed graph G=(V,E) is divided into two disjoint subsets ...
Dmitrii D. Lozovanu
doaj  

Eigenvalue Based Approach for Global Consensus in Multiagent Systems with Nonlinear Dynamics

open access: yesAbstract and Applied Analysis, 2014
This paper addresses the global consensus of nonlinear multiagent systems with asymmetrically coupled identical agents. By employing a Lyapunov function and graph theory, a sufficient condition is presented for the global exponential consensus of the ...
Wei Qian, Lei Wang
doaj   +1 more source

Analysis of Students Performance in Mathematics before and during Covid-19 Pandemic using PageRank: A Preliminary Study

open access: yesAsian Journal of Assessment in Teaching and Learning, 2022
In a normal situation, a university is constantly utilizing standard statistical analysis tools to provide a student's ranking through their academic achievement.
Sumarni Abu Bakar   +3 more
doaj   +1 more source

Cheeger Inequalities for General Edge-Weighted Directed Graphs [PDF]

open access: yes, 2015
We consider Cheeger Inequalities for general edge-weighted directed graphs. Previously the directed case was considered by Chung for a probability transition matrix corresponding to a strongly connected graph with weights induced by a stationary distribution.
Tang, Z, Zhang, C, Chan, HTH
openaire   +2 more sources

Organ‐specific redox imbalances in spinal muscular atrophy mice are partially rescued by SMN antisense oligonucleotides

open access: yesFEBS Letters, EarlyView.
We identified a systemic, progressive loss of protein S‐glutathionylation—detected by nonreducing western blotting—alongside dysregulation of glutathione‐cycle enzymes in both neuronal and peripheral tissues of Taiwanese SMA mice. These alterations were partially rescued by SMN antisense oligonucleotide therapy, revealing persistent redox imbalance as ...
Sofia Vrettou, Brunhilde Wirth
wiley   +1 more source

Transferrin receptor 1‐mediated iron uptake supports thermogenic activation in human cervical‐derived adipocytes

open access: yesFEBS Letters, EarlyView.
In this study, we found that human cervical‐derived adipocytes maintain intracellular iron level by regulating the expression of iron transport‐related proteins during adrenergic stimulation. Melanotransferrin is predicted to interact with transferrin receptor 1 based on in silico analysis.
Rahaf Alrifai   +9 more
wiley   +1 more source

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