We perform experiments on the sloshing dynamics of liquids in a rectangular container submitted to an impulse. We show that when foam is placed on top of the liquid the oscillations of the free interface are significantly damped. The ability to reduce sloshing and associated splashing could find applications in numerous industrial processes involving liquid transport. When a container is set in...

A Room Impulse Response (RIR) shows a complex time-frequency structure, due to the presence of sound re ections and room resonances at low frequencies. Many acoustic signal enhancement applications, such as acoustic feedback cancellation, dereverberation and room equalization, require simple yet accurate models to represent a RIR. Parametric modeling of room acoustics attempts at approximating ...

In this article, a novel design method for rectangular waveguide filters intended fabrication using direct metal additive manufacturing (AM) is proposed. The synthesized will feature smooth profile that allows us to fabricate them orienting the filter propagation axis in vertical building direction, achieving an optimum configuration AM fabrication. valid any all-pole transfer function, which i...

Warren, Young, and Lee (1986) found that treadmill runners control step length by regulating vertical impulse, which could be modulated by the optical time-to-contact variable tau. In contrast, Patla, Robinson, Samways, and Armstrong (1989) report a 40% contribution of horizontal impulse in overground running and a control strategy that depends on the timing of target cuing, undermining the tau...

1. Turbine Classification 1.1. Blade Profiles 1.2. Impulse and Reaction 2. Velocity Diagrams 2.1. General Relationships 2.2. Momentum Principle 2.2.1. Impulse Blading 2.2.2. Reaction Blading 2.3. Blade Efficiency 2.4. Energy Principle 2.4.1. Impulse Blading 2.4.2. Reaction Blading 2.5. Impulse Blading 2.6. Reaction Blading 2.7. Whirl Velocity 3. Stage Design 3.1 Number of Stages 3.1.1 Impulse B...

OBJECTIVE To use an electronic model of human circulation to compare the hemodynamic effects of different durations of chest compression during external CPR, both with and without interposed abdominal compression (IAC). METHODS An electrical analog model of human circulation was studied on digital computer workstations using SPICE, a general-purpose circuit simulation program. In the model th...

A generalized real-space renormalization scheme is developed for geometrical critical phenomena The renormalization group is parametrized by the standard length-scaling factor and a new redangular area-fraction factor. This rectangular renormalization scheme utilizes relatively small r e m g u l a r sublanices to effeaively renormalize large square lattices. With the area-fraction factor, one c...

A Lagrangian numerical method based on impulse variables is analyzed. The relation between impulse vectors and vortex dipoles with a prescribed dipole moment is presented and used to adapt the high-accuracy cutoo functions of vortex methods for use in impulse-based methods. The long-time implementation of the impulse method is shown to contain a source of error whose growth in time renders impu...

Research has found an upward trend in impulse buying in general, and impulse buying is frequently foreseen among mall shoppers. Impulse purchases account for over $4 billion in annual sales in the U.S. (Mogelonsky, 1998). Retailers have found that over 50 percent of mall shoppers purchase on impulse (Nichols et al., 2001). More than one third of all department store purchases were bought on imp...