Identifying the factors driving the uncertainty in transport infrastructure project by application of structural dynamic analysis to a backcast scenario

Futures ◽  
2019 ◽  
Vol 111 ◽  
pp. 26-41 ◽  
Author(s):  
Pete Sykes ◽  
Margaret Bell ◽  
Dilum Dissanayake
2021 ◽  
Vol 11 (5) ◽  
pp. 2081
Author(s):  
Francisco-Javier Moreno-Muro ◽  
Miquel Garrich ◽  
Ignacio Iglesias-Castreño ◽  
Safaa Zahir ◽  
Pablo Pavón-Mariño

Telecom operators’ infrastructure is undergoing high pressure to keep the pace with the traffic demand generated by the societal need of remote communications, bandwidth-hungry applications, and the fulfilment of 5G requirements. Software-defined networking (SDN) entered in scene decoupling the data-plane forwarding actions from the control-plane decisions, hence boosting network programmability and innovation. Optical networks are also capitalizing on SDN benefits jointly with a disaggregation trend that holds the promise of overcoming traditional vendor-locked island limitations. In this work, we present our framework for disaggregated optical networks that leverages on SDN and container-based management for a realistic emulation of deployment scenarios. Our proposal relies on Kubernetes for the containers’ control and management, while employing the NETCONF protocol for the interaction with the light-weight software entities, i.e., agents, which govern the emulated optical devices. Remarkably, our agents’ structure relies on components that offer high versatility for accommodating the wide variety of components and systems in the optical domain. We showcase our proposal with the emulation of an 18-node European topology employing Cassini-compliant optical models, i.e., a state-of-the-art optical transponder proposed in the Telecom Infrastructure Project. The combination of our versatile framework based on containerized entities, the automatic creation of agents and the optical-layer characteristics represents a novel approach suitable for operationally complex carrier-grade transport infrastructure with SDN-based disaggregated optical systems.


2016 ◽  
Vol 31 (1) ◽  
Author(s):  
Soo Chen Kwan ◽  
Marko Tainio ◽  
James Woodcock ◽  
Jamal Hisham Hashim

AbstractThe mass rapid transit (MRT) is the largest transport infrastructure project under the national key economic area (NKEA) in Malaysia. As urban rail is anticipated to be the future spine of public transport network in the Greater Kuala Lumpur city, it is important to mainstream climate change mitigation and public health benefits in the local transport development. This study quantifies the health co-benefits in terms of mortality among the urbanites when the first line of the 150 km MRT system in Kuala Lumpur commences by 2017.Using comparative health risk assessment, we estimated the potential health co-benefits from the establishment of the MRT system. We estimated the reduced COA total of 363,130 tonnes of COThe implementation of the MRT system in Greater Kuala Lumpur could bring substantial health co-benefits to both the general population and the MRT users mainly from the avoidance of mortality from traffic injuries.


2012 ◽  
Author(s):  
Seok-Cheol Hwang ◽  
Kwon-Hee Lee

Author(s):  
ANZHELA YA. KUZNYETSOVA ◽  
LIUDMYLA S. ZAKHARKINA ◽  
VOLODYMYR M. NOVIKOV ◽  
RUSLANA YU. CHUKHNO

The guarantee for stable development of the local community's well-being creates conditions to ensure the financial self-sufficiency for local budgets. Today it is urgent to improve the theoretical and practical approaches to forming the local budget revenue to ensure the necessary financial self-sufficiency level for local budgets. Thus, the purpose of this research is to investigate the level of financial self-sufficiency for local budgets in Ukraine in 1998−2019 by analyzing the revenue side of these budgets. The research used methods of economic, systemic, and structural dynamic analysis. The paper compares different approaches to defining the concept of “financial self-sufficiency for local budgets”. It is determined that the community's success depends on the level of its financial self-sufficiency, which is possible only when the community has financial resources fully to implement local budgets in terms of expenditures. Structural and dynamic analysis of the local budget revenue in Ukraine for 1998-2019 is carried out to assess the level of financial self-sufficiency for local budgets in Ukraine as a whole. The study results indicate the state measures correctness in the reforming of the local taxation system in 2010 and budget decentralization in 2015. However, these measures must be fully implemented and systemic. Conclusions: the composition and structure of the revenues of the local budgets are continually changing, due to the constant changes in the tax system of Ukraine and the state’s efforts to solve the problem of generating local budget revenues, not due to the development of local taxation, but via official transfers. In such conditions, the self-sufficiency of local budgets does not receive the appropriate level. Local budgets are formed on the principle of minimum execution. However, the local taxation system development and the significant increase in tax revenues from local taxes since 2015 allow us to make optimistic forecasts for the growth of the financial self-sufficiency level for local budgets in the future. Keywords: self-sufficiency, community, budget, taxes.


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