Current Practices of Transportation Infrastructure Maintenance Investment Decision Making in the United States

2018 ◽  
Vol 144 (6) ◽  
pp. 04018021 ◽  
Author(s):  
Farrukh Arif ◽  
Mehmet Emre Bayraktar
10.29007/rqnf ◽  
2020 ◽  
Author(s):  
Shantanu Kumar ◽  
Mohammed Hashem Mehany

Limited financial resources and increased demand for transportation infrastructure maintenance and rehabilitation have complicated investment decision making in recent decades. Additionally, the cascading effects of disasters on critical infrastructure combined with insufficient funding for rehabilitation projects have intensified the situation. Meanwhile, infrastructure resiliency has emerged as a major solution to this problem and research efforts are currently implementing resilience concepts in current and future transportation infrastructure projects. Individual research studies have created models to assess investment decisions related to recovery and other facets of resilience (e.g., adaptability and robustness). However, most of these efforts have been fragmented and none have been applied on a standardized basis or been applicable to fit a standard system for infrastructure resiliency measures over different infrastructure projects (e.g. transportation) around the United States. This quantitative research builds on the Envision standardized rating system’s resilience section to explore the possibilities of investment decisions influenced by adopting different resilience strategies. The novel optimization model uses mathematical modeling to assess various combinations of resilience strategies under budget constraints to find an optimal solution. The model has been successful in providing results based on user-defined priorities for cost and resilience.


1993 ◽  
Vol 23 (1) ◽  
pp. 72-80 ◽  
Author(s):  
Dali Zhang ◽  
Joseph Buongiorno

A parsimonious model of capacity expansion is proposed for the United States paper and paperboard industries. The work grows out of Tobin's q theory, which suggested that the ratio between market value and replacement cost of capital is crucial in investment decision making. The model assumes that firms in the two industries are price takers, with a marginal cost of production equal to the average cost. The q values for the paper and paperboard industries were calculated as the ratios of the shadow price of existing capacity to the cost of new capacity. Annual data from 1958 to 1988 were used for estimation, with static and dynamic models of capacity changes. The results showed that a single dynamic equation using the q ratios alone explained most of the gross changes in capacity in both the paper and paperboard industries of the United States during the period considered.


2007 ◽  
Author(s):  
Enrico Rubaltelli ◽  
Giacomo Pasini ◽  
Rino Rumiati ◽  
Paul Slovic

Author(s):  
Steven Hurst

The United States, Iran and the Bomb provides the first comprehensive analysis of the US-Iranian nuclear relationship from its origins through to the signing of the Joint Comprehensive Plan of Action (JCPOA) in 2015. Starting with the Nixon administration in the 1970s, it analyses the policies of successive US administrations toward the Iranian nuclear programme. Emphasizing the centrality of domestic politics to decision-making on both sides, it offers both an explanation of the evolution of the relationship and a critique of successive US administrations' efforts to halt the Iranian nuclear programme, with neither coercive measures nor inducements effectively applied. The book further argues that factional politics inside Iran played a crucial role in Iranian nuclear decision-making and that American policy tended to reinforce the position of Iranian hardliners and undermine that of those who were prepared to compromise on the nuclear issue. In the final chapter it demonstrates how President Obama's alterations to American strategy, accompanied by shifts in Iranian domestic politics, finally brought about the signing of the JCPOA in 2015.


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