A Review and Prospect for the Complexity and Resilience of Urban Public Transit Network Based on Complex Network Theory

Zhang, Lin; Lü, Jian; Fu, Bai-Bai; Li, Shubin

doi:10.1155/2018/2156309

Cited by 30 publications

(26 citation statements)

References 100 publications

(156 reference statements)

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“…A network is a general way of visualizing and analyzing interactions between nodes. It is widely used in many fields [21][22][23][24][25]. e most notable networks are social networks, which have been used and studied for decades [26].…”

Section: Related Workmentioning

confidence: 99%

College Students’ Psychological Health Analysis Based on Multitask Gaussian Graphical Models

Tian

Wang

et al. 2021

Complexity

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Understanding and solving the psychological health problems of college students have become a focus of social attention. Complex networks have become important tools to study the factors affecting psychological health, and the Gaussian graphical model is often used to estimate psychological networks. However, previous studies leave some gaps to overcome, including the following aspects. (1) When studying networks of subpopulations, the estimation neglects the intrinsic relationships among subpopulations, leading to a large difference between the estimated network and the real network. (2) Because of the high cost, previous psychological surveys often have a small sample size, and the psychological description is insufficient. Here, the intrinsic connections among multiple tasks are used, and multitask machine learning is applied to develop a multitask Gaussian graphical model. The psychological networks of the population and subpopulations are estimated based on psychological questionnaire data. This study is the first to apply a psychological network to such a large-scale college student psychological analysis, and we obtain some interesting results. The model presented here is a dynamic model based on complex networks which predicts individual behavior and provides insight into the intrinsic links among various symptoms.

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Section: Related Workmentioning

confidence: 99%

College Students’ Psychological Health Analysis Based on Multitask Gaussian Graphical Models

Tian

Wang

et al. 2021

Complexity

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“…e mechanisms that influence such efficiency are complex and diverse [20]. A number of studies have shown that fiscal expenditure, urban population density [23], transportation infrastructure [9,24,25], and urban industrial composition, and layout [26] have an impact on urban construction land efficiency [27]. However, researchers are yet to reach a consensus in regard to the quantitative measurements and mechanisms of urban construction land use efficiency.…”

Section: Variable Selection and Processingmentioning

confidence: 99%

Utilisation Efficiency of Construction Land in China’s Coastal Cities Based on Debt Level

et al. 2020

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Optimising the allocation of population, land, and capital production resources is crucial for promoting an efficient urbanisation and solving the urban land financial problem. This study uses a panel threshold model to identify the response boundary of urban construction land use efficiency to government debt level for 51 postfinancial crisis Chinese coastal cities. The results indicate that the threshold of economic development level and provincial gross domestic product (per capita gross domestic product: pgdp) are 2.67 and 5.17, respectively. In cities with relatively backward economic development, an expansion of the government debt scale hinders the improvement of the utilisation efficiency of construction land. Also, the threshold value of the government’s accumulated debt level threshold (sd) is 15.83%. When cities fall below the government accumulated debt level threshold (sd < 15.83%), the new debt level has a positive effect on the utilisation efficiency of construction land. When sd > 15.83%, the new debt level impedes the improvement of the utilisation efficiency of construction land. Local governments should reduce their dependence on land finance in cities with high cumulative debt ratios, especially those with negative responses to both thresholds (pgdp and sd thresholds). This study’s findings can provide a reference for a sustainable promotion of new urbanisation in both China and in other countries to avoid the risk of land urbanisation.

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“…Many public transportation systems have developed incrementally over the last hundred years with growing metropolitan regions and increasing needs for public transportation, from early suburban railway or inner city tram networks to present day systems dominated by metro, commuter, light rail and tram networks, as well as large-capacity bus lines (Cervero 1998). Over time, this evolution has shifted the inherent character of such systems from bounded, complicated systems, running fairly deterministic with sufficient margins in capacity and headway, towards the complex, integrated systems-of-systems of today, where capacity is stressed, bottlenecks arise, and the effects of disturbances and failures propagate in new ways throughout the modes of transportation (Zhang et al 2018;Mattsson & Jenelius 2015). The large time scales of changing needs and relatively slow system evolution result in a situation where the increasing complexity of the overall system is not obvious to the organization.…”

Section: Problem Space Observed Mental Barriers In the Organization Dmentioning

confidence: 99%

Mechanisms for a Systems‐Oriented Mindset – Towards Organizational Systems Thinking

Karlsson¹,

Malvius²,

Lindberg³

2020

INCOSE International Symp

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The paper examines a set of related questions regarding the capability of organizations with decentralized, project‐focused life cycle processes and fragmented system perspectives to manage complex systems: how can communication‐focused mechanisms for envisaging, visualizing, and analyzing the system support a shift towards a systems‐oriented mindset in the organization, and; to what extent does a shift in mindset improve organizational capabilities when hierarchy, process framework, and governance model of the organization remain fixed and suboptimal? The central hypothesis explored is that a shift in mindset within the organization, by focusing on the means and ways of communication about the system, can bridge gaps and fragmentations of system perspectives and improve organizational systems thinking capabilities without a need for urgent and drastic organizational actions. A toolkit of 18 mechanisms was developed to support the transformation process from six identified and analyzed problem domains to corresponding solution domains. Results were promising, with several signs of a shift in mindset; however, the long‐term effects on the overall organizational capability remain uncertain.

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A Review and Prospect for the Complexity and Resilience of Urban Public Transit Network Based on Complex Network Theory

Cited by 30 publications

References 100 publications

College Students’ Psychological Health Analysis Based on Multitask Gaussian Graphical Models

College Students’ Psychological Health Analysis Based on Multitask Gaussian Graphical Models

Utilisation Efficiency of Construction Land in China’s Coastal Cities Based on Debt Level

Mechanisms for a Systems‐Oriented Mindset – Towards Organizational Systems Thinking

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