scholarly journals Urban Metro Network Topology Evolution and Evaluation Modelling Based on Complex Network Theory: A Case Study of Guangzhou, China

2018 ◽  
Vol 232 ◽  
pp. 01034
Author(s):  
Shaopei Chen ◽  
Dachang Zhuang ◽  
Huixia Zhang
Keyword(s):  
Complex Network ◽  
Network Theory ◽  
Sequence Data ◽  
Urban Transport ◽  
Topology Structure ◽  
Complex Network Theory ◽  
Transport Services ◽  
Spatio Temporal ◽  
Metro Network

As urban metro network is generally referred as a significant component of the modem urban transport system, the spatiotemporal evolution of spatial layout and topology structure of the network should be investigated and evaluated in order to promote urban transport services and optimize urban spatial pattern. This paper takes a case study of the city of Guangzhou, China, and applies the complex network theory and integrates geography information system (GIS) to explore and discuss the growth and topological structure characteristics of the Guangzhou metro network. Importantly, this paper focuses on accessing the formation process of the topology structure of the Guangzhou metro network from 1997 to 2016 on the basis of spatio-temporal sequence data analysis. This aims to provide scientific references for the future development and planning of urban metro network in China.

scholarly journals Application of the Complex Network Theory in Urban Environments. A Case Study in Catania

2016 ◽  
Vol 101 ◽  
pp. 345-351 ◽  
Author(s):  
Alberto Fichera ◽  
Mattia Frasca ◽  
Valentina Palermo ◽  
Rosaria Volpe
Keyword(s):  
Complex Network ◽  
Network Theory ◽  
Urban Environments ◽  
Complex Network Theory

A framework for assessing project vulnerability to crises

2019 ◽  
Vol 12 (4) ◽  
pp. 1079-1096 ◽  
Author(s):  
Aimin Wang
Keyword(s):  
Complex Network ◽  
Network Topology ◽  
Network Theory ◽  
Critical Role ◽  
Diffusion Path ◽  
Content Type ◽  
Complex Network Theory ◽  
Systems Perspective ◽  
Project Network

Purpose The purpose of this paper is to propose a framework for assessing the vulnerability of projects to crises. The study seeks to clarify the cascade effects of disruptions leading to project crises and to improve project robustness against crises from a systems perspective. Design/methodology/approach A framework for assessing project vulnerability to crises is developed using complex network theory. The framework includes network representation of project systems, analyzing project network topology, simulating the cascade of unexpected disruptions and assessing project vulnerability. Use of the framework is then illustrated by applying it to a case study of a construction project. Findings Project network topology plays a critical role in resisting crises. By increasing the resilience of the critical tasks and adjusting the structure of a project, the complexity and vulnerability of the project can be reduced, which in turn decreases the occurrence of crises. Research limitations/implications The proposed framework is used in a case study. Further studies of its application to projects in diverse industries would be beneficial to enhance the robustness of the results. Practical implications Project crises can threaten the survival of a project and endanger the organization’s security. The proposed framework helps prevent and mitigate project crises by protecting critical tasks and blocking the diffusion path from a systems perspective. Originality/value This paper presents a novel framework based on complex network theory to assess project vulnerability, which provides a systemic understanding of the cascade of disruptions that lead to project crises.

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