Abstract Amazon Web Services (AWS) is a cloud computing services provider that has made significant investments in applying formal methods to proving correctness of its internal systems and providing assurance their end-users. In this paper, we focus on how built abstractions eliminated specifications scale verification engine for AWS access policies, Zelkova , be usable by all users. We presen...

Street trees are integral components of urban green infrastructure. The importance benefits provided by street has motivated the development various tools to quantify value ecosystem services. i-Tree Eco is a widely applied method for quantifying forest structure, services, and values. Since its first release in 2006, been successfully utilized over 100 countries around world. This study descri...