Improved methodology for benefit estimation of highway pavement projects

2019 ◽  
Vol 77 ◽  
pp. 100739
Author(s):  
You Zhou ◽  
Eric Jessup ◽  
Xiaodong Lang
2021 ◽  
Vol 11 (10) ◽  
pp. 4553
Author(s):  
Ewelina Ziajka-Poznańska ◽  
Jakub Montewka

The development of autonomous ship technology is currently in focus worldwide and the literature on this topic is growing. However, an in-depth cost and benefit estimation of such endeavours is in its infancy. With this systematic literature review, we present the state-of-the-art system regarding costs and benefits of the operation of prospective autonomous merchant ships with an objective for identifying contemporary research activities concerning an estimation of operating, voyage, and capital costs in prospective, autonomous shipping and vessel platooning. Additionally, the paper outlines research gaps and the need for more detailed business models for operating autonomous ships. Results reveal that valid financial models of autonomous shipping are lacking and there is significant uncertainty affecting the cost estimates, rendering only a reliable evaluation of specific case studies. The findings of this paper may be found relevant not only by academia, but also organisations considering to undertake a challenge of implementing Maritime Autonomous Surface Ships in their operations.


2013 ◽  
Vol 321-324 ◽  
pp. 209-212
Author(s):  
Chun Yan Xia

nfluences on properties of the concrete highway pavement were analyzed in this paper, and the optimal formulation materials were gotten to use in the repair of used-broken cement blocks in the experiment. Polyurethane concrete material was prepared, combing the ordinary concrete technology with one-step method of the synthesis of polyurethane hard bubble, and then its mechanical properties of the relevant parameters were measured to determine the optimal preparation program. The results show that the polyurethane concrete also has sufficiently good mechanical properties while it has the characteristic of fast patching.


1972 ◽  
Vol 8 (4) ◽  
pp. 840-850 ◽  
Author(s):  
C. J. Cicchetti ◽  
V. K. Smith ◽  
J. L. Knetsch ◽  
R. A. Patton

2012 ◽  
Vol 182-183 ◽  
pp. 396-400
Author(s):  
Xiang Gang Hua ◽  
Shi Qing Wang ◽  
Jing Li

The paper analyzes the Region Partitioning Method of highway pavement distress image and gives a new region partitioning method and its specific operation steps.


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