Basic experiments were conducted on a large-size broad-crested weir with an upstream rounded corner. Detailed velocity and pressure measurements were performed for a range of flow conditions. The results showed the rapid flow re-distribution at the upstream end of the weir, as well as next to the weir brink at large flow rates. Assuming non-uniform velocity and nonhydrostatic pressure distribut...

This paper focuses on Piano Key Weirs (PKWs) as an effective solution for improving the discharge capacity of spillway systems. The flow behavior in inlet and outlet keys is experimentally studied to analyze PKWs with different plan shapes (i.e., rectangular, trapezoidal, triangular). results show that keys, aeration regimes extend higher values headwater ratios (Ho/P) by increasing length magn...

An overlooked, yet essential problem in piano practice involves body posture. Bending the back, leaning towards the keys, lifting the wrist and other improper positions are usually noticed by piano teachers when instructing their students. If they sit too low, fingers will feel the burden of static arm weight; if they sit too high, the playing might become rigid with tension in wrist and should...

In this paper the framework for a multimedia platform called ADRI is described which aids in playing the piano. A 3Dpiano with visualisation of notes was built in a virtual environment and connected with a real synthesizer using Midi to interact with a user. Multiple users can play together on the virtual piano in this 3D environment from different locations. Multiple agents were made, each wit...

This paper proposes novel computer-based interfaces for piano practicing. They are designed to display in real time certain well-defined sub-aspects of piano playing. They are intelligent and unobtrusive in that they adjust automatically to the needs of the practitioner so that no other interaction is needed than moving the piano keys. They include 1) a pattern display, finding recurring pitch ...

This study investigated the temporal behavior of grand piano actions from different manufacturers under different touch conditions and dynamic levels. An experimental setup consisting of accelerometers and a calibrated microphone was used to capture key and hammer movements, as well as the sound signal. Five selected keys were played by pianists with two types of touch ("pressed touch" versus "...