Jusin Park

A hollow reinforced concrete (RC) column has been used to obtain a more economical design by reduction of the material or the self weight of the column. Although a hollow RC column offers a high effectiveness of section properties, it may show poor ductility owing to brittle failure at its inner face. In order to develop a more economical and safer model for a RC column, an internally confined hollow (ICH) RC column and its non-linear concrete model were proposed with the considerations of confi

A laboratory investigation was conducted to characterise and quantify fatigue life of continuously reinforced concrete pavement (CRCP) in Korea highway systems. Eight scale-sized specimens were made, based upon results of finite-element analyses and stress–strain curve comparisons. Rubber plates were used to simulate the cement-treated sub-base and the sub-grade below the concrete pavements. Initially static tests were performed to obtain magnitudes of static failure loads and to predict crack p

Asymmetric broadcast encryption (ABE) allows a sender, given the public keys or identities of recipients, to encrypt a message such that only an authorized subset of users can decrypt it. In fully asymmetric settings, where any user may act as a sender, ciphertext generation time and ciphertext size become critical performance metrics. However, most existing ABE schemes impose substantial sender-side computational costs and scale poorly with system size. This paper presents new ABE constructions