The present paper proposes the use of stepped cross section devices on steel frames aiming at reproducing a pre-established target push-over curve. To this aim Limited Resistance Plastic Device (LRPD) to be inserted along selected structural members is proposed. following two main specific features for LRPD are required: any elastic flexural stiffness variation original member must avoided; an ...

Controlled rocking of steel braced frames has been proposed for the seismic retrofit of structures. The controlled rocking approach allows a frame to uplift from its support at the base-of-column to foundation interface while displacement-based steel yielding devices are implemented at the base location to control the response. Past studies have focused on analytical investigations of the respo...

We have developed the new hybrid structure of CLT infill and steel frame for middle-rise high-rise buildings. This structural system can achieve high potential panel by holding around with frame. Steel support sustained load a building without panels build long-span beams reasonably. Compression stress seismic be transmitted to upper bottom through strength mortal layer, secure shear as boundar...

For each pair (n, k) with 1 </= k < n, we construct a tight frame (rholambda : lambda in Lambda) for L2 (Rn), which we call a frame of k-plane ridgelets. The intent is to efficiently represent functions that are smooth away from singularities along k-planes in Rn. We also develop tools to help decide whether k-plane ridgelets provide the desired efficient representation. We first construct a wa...

To investigate the seismic behavior of end-plate connection semi-rigid space steel frames, three 1/4-scale specimens were tested under cyclic load. Finite element analysis which took initial geometric imperfections into consideration was also conducted, and the results conform to experimental results. The failure modes, hysteretic behavior, deformation capacity and energy-dissipation capacity o...

The rendering process reduces the 3D geometry to a set of 2D triangles in the image plane. The projection from 3D is standard. The projected triangles are clipped and sorted so that the final collection of triangles in a pixel do not overlap each other. So at frame f , the image plane holds a collection of pixels Pk, k = 1, . . .M , each of which contains a set of 2D nonoverlapping triangles {T...

Architectures for focal plane image processing are discussed. On-chip image preprocessing for solid-state imagers using analog CCD circuits is described for low, medium, and high density detector arrays. A spatially parallel architecture for low density, high throughput applica­ tions is described. For sparse illumination or event detection, a content· addressable architecture is proposed. A ne...