Abstract: Extreme natural hazards pose huge challenges to public administration. In the era of social media, governmental response takes the form of complex adaptive systems, applying information technology to support public ...

Abstract: In this paper, the influence of lime-anhydrite (L/A) ratio on the strength development, cement hydration, and setting time of calcium sulfoaluminate cement (CSA) is systemically investigated. Based on Raman spectroscopy ...

Abstract: The presence of both heavy metals and bacteria is frequently reported in urban storm water runoff. Adsorption and complexation of metals onto bacteria and soil takes place as storm water runoff infiltrates into the subsurface, ...

Abstract: In order to enhance the overall performance and operational efficiency of the integrated coaxial compound helicopter and turboshaft engine system, a preliminary study on the optimal rotational speeds was implemented based ...

Abstract: To ensure the accuracy of parameter correction under broad flight envelopes and extensive operating states, a parameter correction method based on modified exponents is proposed for common parameters, along with a correction ...

Abstract: The prediction of the remaining useful life (RUL) of aeroengines is crucial for ensuring their safe operation and reducing maintenance costs. However, aeroengines are complex nonlinear systems that exhibit multiple degradation ...

Abstract: The occurrence of rainfall events has been significantly linked to waterborne-disease outbreaks in the United States and other parts of the world, indicating that wet-weather events may have significant impacts on microbial ...

Abstract: A composite ultrafine sulfoaluminate cement–based grouting material (U-SAC) at a high water–cement (W/C) ratio was developed to reinforce broken coal rock for the safety of coal mines. The effects of the W/C ratio on the ...