We introduce the Random Access Zipper (RAZ), a simple, purely-functional data structure for editable sequences. The RAZ combines the structure of a zipper with that of a tree: like a zipper, edits at the cursor require constant time; by leveraging tree structure, relocating the edit cursor in the sequence requires log time. While existing data structures provide these time bounds, none do so wi...

The present study sets out to integrate the performance-based seismic design approach with the connection topology optimization method. Performance-based connection topology optimization concept aims to simultaneously optimize the size of members and the type of connections with respect to the framework of performance-based seismic design. This new optimization concept is carried out for unbrac...

A new vibration control system, Damped braced tube is developed for adopting on super high-rise buildings in central Tokyo. This system consists of frame using elastic braces and damped slit where a portion are replaced by dampers. acting as link beam coupled shear wall can dissipate seismic energy very efficiently contribute to succeeding meet higher criteria. paper describes outline efficienc...

This paper proposes a new type of variable-cross-section replaceable link that can isolate the plastic deformation. The and frame beam connect with expanding section by bolt along flange web separately. It is easy to design an elastic bolt, reduce slippage, facilitate replacement after earthquake. Considering large deformation range high-strength steel superior link, eccentrically braced variab...

The theme of this paper is interaction between and within plate-based roof structures braced by branching columns and tensile members. Interaction of cross-laminated timber plate structures and branching column systems have been investigated in a previous paper [1] by utilising physical models and Genetic Algorithms. Based on this study the concept of interaction and the utilisation of compress...

Although concentrically braced frame (CBF) systems enjoy high elastic stiffness and lateral strength, they show a low seismic energy absorption capacity. This dilemma is due to the buckling of CBFs’ diagonal members under compressive loading. To overcome shortcoming, researchers have proposed use dampers improve behavior CBF systems. Among dampers, metallic shear damper most popular thanks its ...