The element of Fe can enhance the strength of TiB2/TiAl composite, but it is detrimental to the ductility of the composite due to the existence of large bulk TiB2 phase at grain boundary. The element of Mn is beneficial to the ductility of TiB2/TiAl composite, of which the fracture strain increases from 15.9 to 17.9 % with the addition of 2 at.% Mn. The element of Co can improve the strength an...

This paper studies the problem of centralized dynamic channel assignment (DCA) in wireless cellular systems under space and time-varying channel demand. The objective is to minimize the number of channels required to satisfy demand while also satisfying cochannel interference constraints. Cumulative co-channel interference constraints govern channel reuse, via a threshold decision criterion bas...

In recent years, environmental and energy issues relating to global warming have become more serious, there is a need shift from conventional power generation, which emits an abundance of carbon dioxide, renewable sources without emissions, such as solar wind. However, one the energies, changes dynamically, depending on real time weather conditions. Thus, supplied mainly by generation often uns...

Recent studies predict that Nankai-Trough earthquake to be a huge one. As mitigating measure, passive dampers are widely adopted control structural vibrations of buildings. These devices work effectively against the inter-story shear deformation building frame. In contract, they less effective when is mainly characterized as flexural or bending deformation. It is, therefore, important study dam...

Signal kanban production control systems are often used in manufacturing systems with signiicant setup times where more conventional kanban systems are inappropriate. This paper analyzes signal kanban systems under demands with bounded uctuation. It is shown that such systems are stable in the sense that cumulative demand at any time trails cumulative demand by no more than a constant. We deter...

the basic strategy of reduce the ductility demand and related concentrated tensions at moment resistance connections is reduce the section of the beam at connected region to column. by this method plastic hinge done at the reduced cross section and this local reduction decreases the demand of the components of connection. on this basis, in present study a new beam-to-column moment connection wi...

The seismic performance of prefabricated hollow circular piers with socket and slot connection was evaluated through model tests numerical simulations. quasi-static cyclic lateral load constant axial were conducted on three large pier specimens. these specimens cast by polyvinyl alcohol (PVA) fiber concrete, the connected to cover beams slotted connections bearing platform socketed connections....

Through the pseudo-static test on the steel truss coupling beams with buckling-restrained brace, the bearing capacity, deformation capacity, hysteresis curve, skeleton curve, ductility, Energy Dissipation and stiffness degradation of such coupling beam are understood. The test results show that the steel truss coupling beams with buckling-restrained brace is characterized by bigger bearing capa...

1 Associate Research Fellow,Center for Research on Earthquake Engineering (NCREE), Chinese Taiwan 2 Professor, Dept. of Civil Engineering, Taiwan University, Taipei, Chinese Taiwan 3 Assistant Professor, Dept. of Civil and Environmental Engineering, University of Kaohsiung, Kaohsiung, Chinese Taiwan Email: [email protected] ABSTRACT : Ductility is the main attribute of steel moment connections...