In this study, the effect of fire flame on punching shear strength steel fiber reinforced concrete flat plates was experimentally investigated using nine half-scale specimens with dimensions 1500×1500 mm and a total thickness 100 mm. The main variables comprised volume fraction 0, 1, 1.5% burning steady state temperature 500 600 °C. were divided into three groups, each group consists specimens....

The revision of a code is long-term project that shall fulfil several aims, comprising the enhancement ease-of-use and incorporating updated state-of-the-art. With respect to Eurocode 2 concerning punching shear provisions, this task allowed also for opportunity enhance understanding physical phenomenon by designers. original EN1992-1-1:2004 provisions were adapted from an empirical equation de...

Adiabatic shear localization is studied in two ferrous metals, Remco Iron, a high purity alpha iron, and 4340 steel, quenched and tempered at 650°C. Punching-shear experiments are performed in a compressive split-Hopkinson bar producing shear strain rates of 45,000 s-'. Optical and scanning electron microscopy was performed on the deformed shear specimens to determine the extent of shear locali...

Does distraction or rumination work better to diffuse anger? Catharsis theory predicts that rumination works best, but empirical evidence is lacking. In this study, angered participants hit a punching bag and thought about the person who had angered them (rumination group) or thought about becoming physically fit (distraction group). After hitting the punching bag, they reported how angry they ...

This paper discusses the problem of minimizing the cost of sheet metal punching when nesting (batching) orders. Although the problem is NP-complete, the solution to a linear programming relaxation yields an efficient heuristic. This paper analyzes the heuristic’s worst-case performance and discusses experimental results that demonstrate its ability to find good solutions across a range of cost ...

This paper describes models that estimate the cost and time of sheet metal punching when nesting (batching) orders. These models help decision{makers plan production and evaluate the impact of changing the nesting policy. In addition, we use them to formulate a nesting optimization problem. Finally, we use the models to evaluate the sensitivity of the nesting policy to manufacturing parameters....

Segmenting human motion into distinct actions is a highly challenging problem. From the motion analysis perspective, segmentation is difficult due to large stylistic variations, temporal scaling, changes in physical appearance, irregularity in the periodicity of human motions and the huge number of actions and their combinations. From a semantic viewpoint, segmentation is inherently elusive and...

Does media endorsement for catharsis produce a self-fulfilling or a self-defeating prophecy? In Study 1, participants who read a procatharsis message (claiming that aggressive action is a good way to relax and reduce anger) subsequently expressed a greater desire to hit a punching bag than did participants who read an anticatharsis message. In Study 2, participants read the same messages and th...