Recent investigations on the collapse and growth of macroscopic cavity regions in a granular material due to viscous flow have revealed the possible mechanism of the occurrence of natural disasters such as landslides, collapses of riverbanks and cliffs. We have already shown both theoretically and experimentally a significant effect of flow concentration into the macroscopic cavity regions in a...

Given the ubiquitous nature of infrastructure networks in today's society, there is a global need to understand, quantify, and plan for the resilience of these networks to disruptions. This work defines network resilience along dimensions of reliability, vulnerability, survivability, and recoverability, and quantifies network resilience as a function of component and network performance. The tr...

BACKGROUND Most published studies on seafarer health have focused on patterns of mortality, injury and communicable diseases. Little information is available regarding lifestyle-related cardio-metabolic disease in maritime populations. AIMS To describe health characteristics of a population of US inland waterway merchant marine captains and pilots. METHODS A cross-sectional study of the hea...

Based on the flow continuity formula, resistance sediment transport capacity formula and width-depth ratio relationship, hydraulic geometry relationship theory of equilibrium water depth for a branching river are established suitable arbitrary section shape. The cross-sectional area distributary channel main stream is power function its bifurcation with an exponent 6/7. This was applied to 12.5...

Waterway traffic monitoring is an important content in waterway management. Taking into account that the number of monitored water areas growing and management capabilities are insufficient current situation China, this paper investigates location optimization vessel service (VTS) radar station. During research process, attenuation environmental occlusion, as well variable coverage radius multi...

In Yangtze River traffic management, to manage ship sequencing and scheduling effectively efficiently in restricted waterways has long been a challenging issue. This paper proposes Sliding Window based Online Sequencing Scheduling algorithm (OSS-SW) tackle this problem. The OSS is capable of generating more efficient sequence by introducing the ‘position shift’ concept which takes advantages sh...

Sustainable approaches to water management require broad community acceptance of changes in policy, practice and technology, which in turn, requires an engaged community. A critical first step in building an engaged community is to identify community knowledge about water management, an issue rarely examined in research. To address this, we surveyed a representative sample of Australian adults ...

In this study, we proposed a Regional Probabilistic Risk Assessment (RPRA) to estimate the health risks of exposing residents to heavy metals in different environmental media and land uses. The mean and ranges of heavy metal concentrations were measured in water, sediments, soil profiles and surface soils under four land uses along the Shunde Waterway, a drinking water supply area in China. Haz...