In Japan, recent low birthrate and aging population have progressively led to a crisis for infrastructure. In particular, the quantity of drainage from homes and factories is remarkably decreasing, along with the decline of economic activity resulting from the overseas move of Japanese...

The post disaster needs assessment (PDNA) assesses the impact of the April 25, 2015 earthquake in Nepal and defines a recovery strategy. In the analysis, damage is defined as the cost to replace durable physical assets (buildings, equipment, facilities, and machinery) that were damaged or...

Earthquakes and tsunamis increase the risks of hydro-meteorological disasters. After the Great East Japan Earthquake (GEJE), disaster-prevention structures such as coastal and river dikes were quickly rehabilitated. A phased process of rehabilitation work made it possible to address urgent needs...

Natural disasters are on the rise worldwide. There are more and more intense natural disasters - which are defined to cause at least 100 deaths or to affect the basic survival needs of at least 1,000 people - resulting from floods and storms as well as droughts and heat waves. The Asia and the...

The present study aims to conduct a quantitative evaluation of evacuation route safety using the Ant Colony Optimization (ACO) algorithm for risk management in central Tokyo. Firstly, the similarity in safety was focused on while taking into consideration road blockage probability. Then, by...

This paper describes the methodology and findings for the extreme hazard exposure analysis of the Chinese wastewater sector to flooding and earthquakes hazards. This analysis is undertaken for changing flooding, under climate scenarios, and earthquake exposure of a spatially accurate wastewater...