Search Results - subject:"Complex Network"

Disease spreading on fitness-rewired complex networks

Yoo, Jaewan; Lee, J.S.; Kahng, B. - In: Physica A: Statistical Mechanics and its Applications 390 (2011) 23, pp. 4571-4576

As people travel, human contact networks may change topologically from time to time. In this paper, we study the problem of epidemic spreading on this kind of dynamic network, specifically the one in which the rewiring dynamics of edges are carried out to preserve the degree of each node (called...

Persistent link: https://www.econbiz.de/10011059129

Online social networks—Paradise of computer viruses

Fan, W.; Yeung, K.H. - In: Physica A: Statistical Mechanics and its Applications 390 (2011) 2, pp. 189-197

Online social network services have attracted more and more users in recent years. So the security of social networks becomes a critical problem. In this paper, we propose a virus propagation model based on the application network of Facebook, which is the most popular among these social network...

Persistent link: https://www.econbiz.de/10011059815

The role of syntax in complex networks: Local and global importance of verbs in a syntactic dependency network

Čech, Radek; Mačutek, Ján; Žabokrtský, Zdeněk - In: Physica A: Statistical Mechanics and its Applications 390 (2011) 20, pp. 3614-3623

Syntax of natural language has been the focus of linguistics for decades. The complex network theory, being one of new … impact of the syntactic function of a verb in the sentence on the complex network structure. Verbs play the decisive role in … the sentence structure (“local” importance). From this fact we hypothesize the importance of verbs in the complex network …

Persistent link: https://www.econbiz.de/10011062856

The effect of hub nodes on the community structure in scale-free networks

Wang, Yang; Hu, Yanqing; Di, Zengru; Fan, Ying - In: Physica A: Statistical Mechanics and its Applications 390 (2011) 21, pp. 4027-4033

Many networks have two important features in common (1) the scale-free degree distribution P(k)∝k−α and (2) the community structure. In this paper, we focus on the relationship between these two features in complex networks. We first investigate the effect of the power law exponent α on...

Persistent link: https://www.econbiz.de/10011062998

Changing motif distributions in complex networks by manipulating rich-club connections

Xu, Xiao-Ke; Zhang, Jie; Li, Ping; Small, Michael - In: Physica A: Statistical Mechanics and its Applications 390 (2011) 23, pp. 4621-4626

The role of rich-club connectivity is significant in the structural property and functional behavior of complex networks. In this study, we find whether or not a very small portion of rich nodes connected to each other can strongly affect the frequency of occurrence of basic building blocks...

Persistent link: https://www.econbiz.de/10010588463

Optimal routing strategy based on the minimum information path

Wang, Kai; Zhang, Yifeng; Zhou, Siyuan; Pei, Wenjiang; … - In: Physica A: Statistical Mechanics and its Applications 390 (2011) 13, pp. 2593-2600

In this paper, we propose a new routing strategy based on the minimum information path, named the optimal routing (OR) strategy, to improve the transportation capacity of scale-free networks. We define the average routing centrality degree of the node to analyze the traffic load on nodes of...

Persistent link: https://www.econbiz.de/10010588921

A modified SIS model with an infective medium on complex networks and its global stability

Yang, Meng; Chen, Guanrong; Fu, Xinchu - In: Physica A: Statistical Mechanics and its Applications 390 (2011) 12, pp. 2408-2413

In this paper, we propose a modified susceptible–infected–susceptible model with an infective medium, which describes epidemics transmitted through an infective medium on complex networks. We examine epidemic thresholds for disease spreading by using this new model and compare it with the...

Persistent link: https://www.econbiz.de/10010590378

Traffic dynamics on layered complex networks

Zhuo, Yue; Peng, Yunfeng; Liu, Chang; Liu, Yingkai; … - In: Physica A: Statistical Mechanics and its Applications 390 (2011) 12, pp. 2401-2407

To minimize traffic congestion, understanding how traffic dynamics depend on network structure is necessary. Many real-world complex systems can be described as multilayer structures. In this paper, we introduce the idea of layers to establish a traffic model of two-layer complex networks. By...

Persistent link: https://www.econbiz.de/10010590430

Enforcing social behavior in an Ising model with complex neighborhoods

Cajueiro, D.O. - In: Physica A: Statistical Mechanics and its Applications 390 (2011) 9, pp. 1695-1703

We consider the problem of enforcing desired behavior in a population of individuals modeled by an Ising model. Although there is a large literature dealing with social interaction models, the problem of controlling behavior in a system modeled by the Ising model seems to be an unexplored field....

Persistent link: https://www.econbiz.de/10010591275

INTERCONNECTEDNESS AND RESILIENCE OF THE U.S. ECONOMY

XU, MING; ALLENBY, BRAD R.; CRITTENDEN, JOHN C. - In: Advances in Complex Systems (ACS) 14 (2011) 05, pp. 649-672

An economy consists of interconnected sectors which are specialized in producing different products or providing particular services. We study the interconnectedness of the U.S. economy using a network approach, finding that sectors are highly clustered in this "economy network" and play...

Persistent link: https://www.econbiz.de/10009366047